Updated on 2025/04/25

Information

 

写真a

 
YOSHIOKA TAMAKI
 
Organization
Faculty of Arts and Science Division for Experimental Natural Science Professor
Research Center for Advanced Particle Physics （Concurrent）
Office for Promoting Cooperation with Society （Concurrent）
Graduate School of Sciences Department of Physics（Concurrent）
Title
Professor
Contact information
メールアドレス
Tel
0928026006
Profile
1, Experimental particle physics using muon: Search for muon-e conversion , and precise measurement of muon g-2/EDM. 2, Fundamental physics using low energy neutron: Search for T-violation via compound nuclei, search for unknown short range force using small angle neutron scattering and precise measurement of neutron lifetime.
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Research Areas

  • Natural Science / Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics

Degree

  • Ph.D.

Research History

  • 2005.4 東京大学素粒子物理国際研究センター 特任研究員　 2008.6 高エネルギー加速器研究機構 特任助教   

Research Interests・Research Keywords

  • Research theme： Experimental Particle Physics

    Keyword： Fundamental physics using low energy muon and neutron

    Research period： 2011.4

Papers

  • Muon g − 2: A review

    Alex Keshavarzi, Kim Siang Khaw, Tamaki Yoshioka

    Nuclear Physics B   975   2022.2   （ ISSN:0550-3213 eISSN:1873-1562 ）

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    Language：Others   Publishing type：Research paper (scientific journal)   Publisher：Nuclear Physics B  

    The muon magnetic anomaly, aμ=(gμ−2)/2, plays a special role in the history of the Standard Model (SM). Precise calculations and measurements of this fundamental quantity provide a stringent test of the SM and a window to the physics beyond. In light of the first result published by the Fermilab Muon g−2 experiment, this article reviews the current status of the experimental measurement and theoretical prediction of the muon anomalous magnetic moment. It also provides an overview on resulting constraints of associated physics beyond the SM (BSM), future muon g−2 experiments and on the progress of experiments that are closely connected to the physics of the muon g−2, such as measurements that could provide complementary information about BSM physics in the muon sector.

    DOI： 10.1016/j.nuclphysb.2022.115675

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  • Low awareness but high willingness to engage in science communication: a cross-disciplinary survey study in a Japanese University

    Kobayashi, Y; Kudo, K; Kobayashi, T; Kinoshita, H; Bang, H; Ito, H; Kishimura, A; Matsumoto, Y; Miwa, M; Unoki, M; Yoshioka, T

    SCIENTOMETRICS   2025.3   （ ISSN:0138-9130 eISSN:1588-2861 ）

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    Publisher：Scientometrics  

    Researchers play a pivotal role as key actors in science communication. Therefore, it is imperative for academic institutions to support their activities. However, there are many uncertainties regarding activities by researcher and institutional support. Notably, researchers’ awareness and experience of these activities need to be clarified. Therefore, we conducted a questionnaire survey on researchers at Kyushu University in Japan to assess their awareness of and willingness to participate in science communication activities. The survey was conducted between 2021 and 2022. We sent a questionnaire to 2,336 researchers and received responses from 577 (24.7%). The survey revealed that the awareness of science communication was not very high (43%). Remarkably, awareness among medical, dental, and pharmaceutical researchers was relatively low. However, all field researchers recognized the importance of the activities and had a strong willingness to participate if given the opportunity. Furthermore, the results show that researchers in the humanities and social sciences had a relatively high awareness of promoting science communication in Japanese Science, Technology, and Innovation policy. Researchers over 40 years of age had more experience than researchers aged 20–39 years. Barriers such as time constraints and lack of regulation of personnel evaluation were reaffirmed.

    DOI： 10.1007/s11192-025-05251-z

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  • 草の根サイエンスカフェの開設・継続に必要な要素：九州北部地域の三つのサイエンスカフェの質的研究から Reviewed

    小林良彦, 坂倉真衣, 吉岡瑞樹, 三島美佐子

    科学技術コミュニケーション   35   13 - 24   2024.10

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  • Development of Japanese-style cosmic-ray muon detector for outreach and education

    Ueno K., Shoji M., Higashide M., Iiyama H., Ishikawa T., Kin T., Matsumoto A., Nakamori T., Ohtsuka M., Takahashi S., Yoshioka T.

    Proceedings of Science   444   2024.9

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    Publisher：Proceedings of Science  

    For many citizens and students interested in particle physics and astrophysics, there are few opportunities to touch real research that needs expensive equipment such as an accelerator, a telescope, and a detector. However, recent technological developments have made it possible to build a low-cost detector, and some physicists have tried to develop simple detectors for outreach and education. We have also designed and developed a low-cost and compact detector, OSECHI (Outreach & Science Education Cosmic-ray Hunting Instrument), that can measure cosmic-ray muons. The detector consists of three 3D-printed plastic scintillator layers that can measure coincident events by one detector. Silicon photomultipliers (SiPMs) are mounted on the scintillators for light collection. Output signals from SiPMs are read by a custom-designed electronics board which records the charge and timing information of the signals. Three LEDs corresponding to three scintillators are implemented on the board, and we can check the signals by eye in real time. The board can be powered by a USB connector and has the DC-HV converter to provide the bias voltage to the SiPMs. Some interfaces are implemented in which commercial monitors such as thermometers and GPS can be added. The functionalities for all signal processing are controlled by a chip microcontroller. All the parts of the detector are contained in the Japanese-style tiered bento box, “Jubako”. In this paper, we introduce the details of the OSECHI and the performance of the prototype. Examples of its use of outreach will also be reported.

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  • Performance of the Fully Equipped Spin Flip Chopper for the Neutron Lifetime Experiment at J-PARC

    K Mishima, G Ichikawa, Y Fuwa, T Hasegawa, M Hino, R Hosokawa, T Ino, Y Iwashita, M Kitaguchi, S Matsuzaki, T Mogi, H Okabe, T Oku, T Okudaira, Y Seki, H E Shimizu, H M Shimizu, S Takahashi, M Tanida, S Yamashita, M Yokohashi, T Yoshioka

    Progress of Theoretical and Experimental Physics   2024 ( 9 )   2024.9   （ ISSN:2050-3911 eISSN:2050-3911 ）

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    Publishing type：Research paper (scientific journal)   Publisher：Oxford University Press (OUP)  

    Abstract

    To solve the “neutron lifetime puzzle,” where measured neutron lifetimes differ depending on the measurement methods, an experiment with a pulsed neutron beam at J-PARC is in progress. In this experiment, neutrons are bunched into 40-cm lengths using a spin flip chopper (SFC), where the statistical sensitivity was limited by the aperture size of the SFC. The SFC comprises three sets of magnetic supermirrors and two resonant spin flippers. In this paper, we discuss an upgrade to enlarge the apertures of the SFC. With this upgrade, the statistics per unit time of the neutron lifetime experiment increased by a factor of 2.8, while maintaining a signal-to-noise ratio of 250–400, which is comparable to the previous one. Consequently, the time required to reach a precision of 1 s in the neutron lifetime experiment was reduced from 590 to 170 days, which is a significant reduction in time. This improvement in the statistics will also contribute to the reduction of systematic uncertainties, such as background evaluation, fostering further advancements in the neutron lifetime experiments at J-PARC.

    DOI： 10.1093/ptep/ptae123

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    Other Link： https://academic.oup.com/ptep/article-pdf/2024/9/093G01/59179657/ptae123.pdf

  • Circular polarization measurement for individual gamma rays in capture reactions with intense pulsed neutrons

    Endo, S; Abe, R; Fujioka, H; Ino, T; Iwamoto, O; Iwamoto, N; Kawamura, S; Kimura, A; Kitaguchi, M; Kobayashi, R; Nakamura, S; Oku, T; Okudaira, T; Okuizumi, M; Omer, M; Rovira, G; Shima, T; Shimizu, HM; Shizuma, T; Taira, Y; Takada, S; Takahashi, S; Yoshikawa, H; Yoshioka, T; Zen, HS

    EUROPEAN PHYSICAL JOURNAL A   60 ( 8 )   2024.8   （ ISSN:1434-6001 eISSN:1434-601X ）

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    Publisher：European Physical Journal A  

    Measurements of circular polarization of γ-ray emitted from neutron capture reactions provide valuable information for nuclear physics studies. The spin and parity of excited states can be determined by measuring the circular polarization from polarized neutron capture reactions. Furthermore, the γ-ray circular polarization in a neutron capture resonance is crucial for studying the enhancement effect of parity nonconservation in compound nuclei. The γ-ray circular polarization can be measured using a polarimeter based on magnetic Compton scattering. A polarimeter was constructed, and its performance indicators were evaluated using a circularly polarized γ-ray beam. Finally, as a demonstration, the γ-ray circular polarization was measured in 32S(n,γ)33S reactions with polarized neutrons.

    DOI： 10.1140/epja/s10050-024-01392-6

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  • Silicon Strip Detector for Muon g-2/EDM Experiment at J-PARC

    Shinji Ogawa, Takahiro Ushizawa, Keisuke Umebayashi, Yuuta Okazaki, Tatsuya Kume, Shota Kurumida, Naohito Saito, Nobuhiko Sato, Yutaro Sato, Junichi Suzuki, Yoshiaki Seino, Toshikazu Takatomi, Junji Tojo, Tsutomu Mibe, Hiroshi Yamaoka, Takashi Yamanaka, Tamaki Yoshioka

    Proceedings of the 31st International Workshop on Vertex Detectors (VERTEX2022)   2024.6

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    Publishing type：Research paper (international conference proceedings)   Publisher：Journal of the Physical Society of Japan  

    DOI： 10.7566/jpscp.42.011008

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  • High sensitivity of a future search for effects of <i>P</i>-odd / <i>T</i>-odd interactions on the 0.75 eV <i>p</i>-wave resonance in (<i>n</i>)over-right-arrow+<SUP>139</SUP>(La)over-right-arrow forward transmission determined using a pulsed neutron beam

    Nakabe, R; Auton, CJ; Endo, S; Fujioka, H; Gudkov, V; Hirota, K; Ide, I; Ino, T; Ishikado, M; Kambara, W; Kawamura, S; Kimura, A; Kitaguchi, M; Kobayashi, R; Okamura, T; Oku, T; Okudaira, T; Okuizumi, M; Munoz, JGO; Parker, JD; Sakai, K; Shima, T; Shimizu, HM; Shinohara, T; Snow, WM; Takada, S; Takahashi, R; Takahashi, S; Tsuchikawa, Y; Yoshioka, T

    PHYSICAL REVIEW C   109 ( 4 )   2024.4   （ ISSN:2469-9985 eISSN:2469-9993 ）

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    Publisher：Physical Review C  

    Neutron transmission experiments can offer a new type of highly sensitive search for time-reversal invariance violating (TRIV) effects in nucleon-nucleon interactions via the same enhancement mechanism observed for large parity violating (PV) effects in neutron-induced compound nuclear processes. In these compound processes, the TRIV cross section is given as the product of the PV cross section, a spin factor κ, and a ratio of TRIV and PV matrix elements. We determined κ to be 0.59±0.05 for La139+n using both (n,γ) spectroscopy and (n→ +139La→) transmission. This result quantifies for the first time the high sensitivity of the La139 0.75-eV p-wave resonance in a future search for effects of P-odd/T-odd interactions in (n→ +139La→) forward transmission.

    DOI： 10.1103/PhysRevC.109.L041602

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  • Spin dependence in the p -wave resonance of la 139 - + n - +

    T. Okudaira, R. Nakabe, C. J. Auton, S. Endo, H. Fujioka, V. Gudkov, I. Ide, T. Ino, M. Ishikado, W. Kambara, S. Kawamura, R. Kobayashi, M. Kitaguchi, T. Okamura, T. Oku, J. G. Otero Munoz, J. D. Parker, K. Sakai, T. Shima, H. M. Shimizu, T. Shinohara, W. M. Snow, S. Takada, Y. Tsuchikawa, R. Takahashi, S. Takahashi, H. Yoshikawa, T. Yoshioka

    Physical Review C   109 ( 4 )   2024.4   （ ISSN:2469-9985 eISSN:2469-9993 ）

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    Language：Others   Publishing type：Research paper (scientific journal)   Publisher：Physical Review C  

    We measured the spin-dependent cross section at a neutron-induced p-wave resonance using a polarized epithermal neutron beam and a polarized nuclear target. Our study focuses on the 0.75 eV p-wave resonance of La139+n, where previous experiments have shown a large enhancement of parity violation. The spin dependence of the neutron absorption cross section of polarized La139 and polarized neutrons determines the partial neutron width of the p-wave resonance. This partial width is a key parameter needed to determine the sensitivity of this system to possible parity-odd and time reversal-odd interactions beyond the standard model. Our findings therefore serve as a foundation for a future search for time reversal violation in this compound nuclear system.

    DOI： 10.1103/PhysRevC.109.044606

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  • Software compensation for highly granular calorimeters using machine learning

    Lai, S; Utehs, J; Wilhahn, A; Bach, O; Brianne, E; Ebrahimi, A; Gadow, K; Göttlicher, P; Hartbrich, O; Heuchel, D; Irles, A; Krüger, K; Kvasnicka, J; Lu, S; Neubüser, C; Provenza, A; Reinecke, M; Sefkow, F; Schuwalow, S; De Silva, M; Sudo, Y; Tran, HL; Buhmann, E; Garutti, E; Huck, S; Kasieczka, G; Martens, S; Rolph, J; Wellhausen, J; Blazey, GC; Dyshkant, A; Francis, K; Zutshi, ; Bilki, B; Northacker, D; Onel, Y; Hummer, F; Simon, F; Kawagoe, K; Onoe, T; Suehara, T; Tsumura, S; Yoshioka, T; Fouz, MC; Emberger, L; Graf, C; Wagner, M; Pöschl, R; Richard, F; Zerwas, D; Boudry, ; Brient, JC; Nanni, J; Videau, H; Liu, L; Masuda, R; Murata, T; Ootani, W; Takatsu, T; Tsuji, N; Chadeeva, M; Danilov, M; Korpachev, S; Rusinov,

    JOURNAL OF INSTRUMENTATION   19 ( 4 )   2024.4   （ ISSN:1748-0221 ）

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    Publisher：Journal of Instrumentation  

    A neural network for software compensation was developed for the highly granular CALICE Analogue Hadronic Calorimeter (AHCAL). The neural network uses spatial and temporal event information from the AHCAL and energy information, which is expected to improve sensitivity to shower development and the neutron fraction of the hadron shower. The neural network method produced a depth-dependent energy weighting and a time-dependent threshold for enhancing energy deposits consistent with the timescale of evaporation neutrons. Additionally, it was observed to learn an energy-weighting indicative of longitudinal leakage correction. In addition, the method produced a linear detector response and outperformed a published control method regarding resolution for every particle energy studied.

    DOI： 10.1088/1748-0221/19/04/P04037

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  • Design, construction and commissioning of a technological prototype of a highly granular SiPM-on-tile scintillator-steel hadronic calorimeter

    White, A; Yu, J; Eigen, G; Zalieckas, J; Dannheim, D; Elsener, K; Grefe, C; Klempt, W; Linssen, L; Sailer, A; Sicking, E; Lai, S; Utehs, J; Wilhahn, A; Bach, O; Brianne, E; Ebrahimi, A; Gadow, K; Göttlicher, P; Hartbrich, O; Heuchel, D; Irles, A; Krüger, K; Laudrain, A; Lu, S; Neubüser, C; Provenza, A; Reinecke, M; Sefkow, F; Schuwalow, S; De Silva, M; Sudo, Y; Tran, HL; Buhmann, E; Buhmann, P; Garutti, E; Huck, S; Laurien, S; Lomidze, D; Martens, S; Matysek, M; Rolph, J; Briggl, K; Eckert, P; Munwes, Y; Schultz-Coulon, HC; Shen, W; Stamen, R; Kawagoe, K; Kuhara, M; Onoe, T; Suehara, T; Tsumura, S; Yoshioka, T; Wing, M; Grenier, G; Büscher, V; Chau, P; Krause, S; Liu, Y; Masetti, L; Schäfer, U; Tapprogge, S; Wanke, R; Weitzel, Q; Corriveau, F; Freund, B; Emberger, L; Gabriel, M; Graf, C; Hummer, F; Sasikumar, KS; Simon, F; Wagner, M; Windel, H; Bilokin, S; Bonis, J; Breton, D; Cornebise, P; Gallas, A; Jeglot, J; Maalmi, J; Pöschl, R; Thiebault, A; Richard, F; Zerwas, D; Callier, S; Dulucq, F; de la Taille, C; Martin-Chassard, G; Raux, L; Seguin-Moreau, N; Cvach, J; Janata, M; Kovalcuk, M; Kvasnicka, J; Polak, I; Smolik, J; Vrba, V; Zalesak, J; Zuklin, J; Fujita, Y; Itoh, H; Kanzaki, I; Kotera, K; Takeshita, T; Terada, R; Ootani, W; Liu, L; Masuda, R; Mori, T; Murata, T; Torimaru, T; Tsuji, N; Ueda, Y; Elkhalii, A; Götze, M; Zeitnitz, C; Chadeeva, M; Danilov, M; Popova, E; Rusinov, V; Tarkovsky, E

    JOURNAL OF INSTRUMENTATION   18 ( 11 )   2023.11   （ ISSN:1748-0221 ）

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    Publisher：Journal of Instrumentation  

    The CALICE collaboration is developing highly granular electromagnetic and hadronic calorimeters for detectors at future energy frontier electron-positron colliders. After successful tests of a physics prototype, a technological prototype of the Analog Hadron Calorimeter has been built, based on a design and construction techniques scalable to a collider detector. The prototype consists of a steel absorber structure and active layers of small scintillator tiles that are individually read out by directly coupled SiPMs. Each layer has an active area of 72 × 72 cm^2 and a tile size of 3 × 3 cm^2. With 38 active layers, the prototype has nearly 22,000 readout channels, and its total thickness amounts to 4.4 nuclear interaction lengths. The dedicated readout electronics provide time stamping of each hit with an expected resolution of about 1 ns. The prototype was constructed in 2017 and commissioned in beam tests at DESY. It recorded muons, hadron showers and electron showers at different energies in test beams at CERN in 2018. In this paper, the design of the prototype, its construction and commissioning are described. The methods used to calibrate the detector are detailed, and the performance achieved in terms of uniformity and stability is presented.

    DOI： 10.1088/1748-0221/18/11/P11018

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  • Angular distribution of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>γ</mml:mi></mml:math> rays from a neutron-induced <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>p</mml:mi></mml:math> -wave resonance of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Xe</mml:mi><mml:mprescripts /><mml:none /><mml:mn>132</mml:mn></mml:mmultiscripts></mml:math>

    T. Okudaira, Y. Tani, S. Endo, J. Doskow, H. Fujioka, K. Hirota, K. Kameda, A. Kimura, M. Kitaguchi, M. Luxnat, K. Sakai, D. C. Schaper, T. Shima, H. M. Shimizu, W. M. Snow, S. Takada, T. Yamamoto, H. Yoshikawa, T. Yoshioka

    Physical Review C   107 ( 5 )   2023.5   （ ISSN:2469-9985 eISSN:2469-9993 ）

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    Language：Others   Publishing type：Research paper (scientific journal)   Publisher：American Physical Society (APS)  

    A neutron-energy dependent angular distribution was measured for individual γ rays from the 3.2 eV p-wave resonance of Xe131+n, that shows enhanced parity violation owing to a mixing between s- and p-wave amplitudes. The γ-ray transitions from the p-wave resonance were identified, and the angular distribution with respect to the neutron momentum was evaluated as a function of the neutron energy for 7132 keV γ rays, which correspond to a transition to the 1807 keV excited state of Xe132. The angular distribution is considered to originate from the interference between s- and p-wave amplitudes, and will provide a basis for a quantitative understanding of the enhancement mechanism of the fundamental parity violation in compound nuclei.

    DOI： 10.1103/physrevc.107.054602

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    Other Link： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevC.107.054602/fulltext

  • Description and stability of a RPC-based calorimeter in electromagnetic and hadronic shower environments

    Apostolakis, J; Folger, G; Ribon, A; Sicking, E; Boumedine, D; Francais, V; Goto, K; Kawagoe, K; Kuhara, M; Suehara, T; Yoshioka, T; Pingault, A; Tytgat, M; Garillot, G; Grenier, G; Kurca, T; Laktineh, I; Liu, B; Li, B; Mirabito, L; Steen, A; Été, R; Krüger, K; Sefkow, F; Corriveau, F; Emberger, L; Graf, C; Simon, F; Pöschl, R; Kim, DW; Park, SW; Alamillo, EC; Carrillo, C; Fouz, MC; Cabrera, HG; Marin, J; Navarrete, J; Pelayo, JP; Verdugo, A

    JOURNAL OF INSTRUMENTATION   18 ( 3 )   2023.3   （ ISSN:1748-0221 ）

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    Publisher：Journal of Instrumentation  

    The CALICE Semi-Digital Hadron Calorimeter technological prototype completed in 2011 is a sampling calorimeter using Glass Resistive Plate Chamber (GRPC) detectors as the active medium. This technology is one of the two options proposed for the hadron calorimeter of the International Large Detector for the International Linear Collider. The prototype was exposed in 2015 to beams of muons, electrons, and pions of different energies at the CERN Super Proton Synchrotron. The use of this technology for future experiments requires a reliable simulation of its response that can predict its performance. GEANT4 combined with a digitization algorithm was used to simulate the prototype. It describes the full path of the signal: showering, gas avalanches, charge induction, and hit triggering. The simulation was tuned using muon tracks and electromagnetic showers for accounting for detector inhomogeneity and tested on hadronic showers collected in the test beam. This publication describes developments of the digitization algorithm. It is used to predict the stability of the detector performance against various changes in the data-taking conditions, including temperature, pressure, magnetic field, GRPC width variations, and gas mixture variations. These predictions are confronted with test beam data and provide an attempt to explain the detector properties. The data-taking conditions such as temperature and potential detector inhomogeneities affect energy density measurements but have small impact on detector efficiency.

    DOI： 10.1088/1748-0221/18/03/P03035

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  • Development of a vertex finding algorithm using Recurrent Neural Network

    Goto, K; Suehara, T; Yoshioka, T; Kurata, M; Nagahara, H; Nakashima, Y; Takemura, N; Iwasaki, M

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   1047   2023.2   （ ISSN:0168-9002 eISSN:1872-9576 ）

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    Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment  

    Deep learning is a rapidly-evolving technology with the possibility to significantly improve the physics reach of collider experiments. In this study we developed a novel vertex finding algorithm for future lepton colliders such as the International Linear Collider. We deploy two networks: one consists of simple fully-connected layers to look for vertex seeds from track pairs, and the other is a customized Recurrent Neural Network with an attention mechanism and an encoder–decoder structure to associate tracks to the vertex seeds. The performance of the vertex finder is compared with the standard ILC vertex reconstruction algorithm.

    DOI： 10.1016/j.nima.2022.167836

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  • The LiNA experiment: Development of multi-layered time projection chamber Reviewed

    Naoyuki Sumi, Go Ichikawa, Kenji Mishima, Yasuhiro Makida, Masaaki Kitaguchi, So Makise, Shun Matsuzaki, Tomoya Nagano, Masaki Tanida, Hideaki Uehara, Kodai Yano, Hidetoshi Otono, Tamaki Yoshioka

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   1045   2023.1   （ ISSN:01689002 ）

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    Language：Others   Publishing type：Research paper (scientific journal)   Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment  

    The neutron lifetime is an important parameter for particle physics and cosmology. There are two types of measurement methods carried out so far, but their results are in disagreement with 4.6σ. In the beam method carried out at J-PARC, a neutron bunch passes through a gaseous detector Time Projection Chamber (TPC). The TPC counts a beta decay electron and a neutron flux by 3He(n,p)3H reaction. However, the result of this experiment still has large uncertainty. The largest two contributions to the uncertainty are background contamination and signal cut inefficiency. A new experiment, the LiNA experiment, was proposed to overcome the problems. This system suppresses background events that come from the detector wall and improves signal cut efficiency by applying a uniform magnetic field in parallel to the beam axis. The detector system which has three drift layers was developed at Kyushu University. The detector and magnet integration tests were carried out at KEK. The β-ray source was installed in the center of the detector to imitate the neutron beta decay electron. The γ-ray source was installed on the side of the detector to evaluate background suppression with the field. It was confirmed that β-ray is confined while γ-ray background is suppressed to 3% in the signal region. This system can measure the neutron lifetime with an accuracy of 0.2% by 30 days measurement at J-PARC.

    DOI： 10.1016/j.nima.2022.167586

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  • Measurement of the transverse asymmetry of γ rays in the 117Sn(n,γ)118Sn reaction Reviewed

    S. Endo, T. Okudaira, R. Abe, H. Fujioka, K. Hirota, A. Kimura, M. Kitaguchi, T. Oku, K. Sakai, T. Shima, H. M. Shimizu, S. Takada, S. Takahashi, T. Yamamoto, H. Yoshikawa, T. Yoshioka

    Physical Review C   106 ( 6 )   2022.12   （ ISSN:2469-9985 eISSN:2469-9993 ）

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Physical Society (APS)  

    Largely enhanced parity-violating effects observed in compound resonances induced by epithermal neutrons are currently attributed to the mixing of parity-unfavored partial amplitudes in the entrance channel of the compound states. Furthermore, it is proposed that the same mechanism that enhances the parity violation also enhances the breaking of time-reversal invariance in the compound nucleus. The entrance-channel mixing induces energy-dependent spin-angular correlations of individual γ rays emitted from the compound nuclear state. For a detailed study of the mixing model, the γ-ray yield in the reaction of Sn117(n,γ)Sn118 was measured using a pulsed beam of polarized epithermal neutrons and Ge detectors. An angular dependence of asymmetric γ-ray yields for the orientation of the neutron polarization was observed.

    DOI： 10.1103/physrevc.106.064601

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    Other Link： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevC.106.064601/fulltext

  • Energy reconstruction of hadronic showers at the CERN PS and SPS using the Semi-Digital Hadronic Calorimeter

    D. Boumediene, A. Pingault, M. Tytgat, Y. W. Baek, D. W. Kim, S. C. Lee, B. G. Min, S. W. Park, Y. Deguchi, K. Kawagoe, Y. Miura, R. Mori, I. Sekiya, T. Suehara, T. Yoshioka, L. Caponetto, C. Combaret, G. Garillot, G. Grenier, J. C. Ianigro, T. Q. Kurca, I. Laktineh, B. Liu, B. Li, N. Lumb, H. Mathez, L. Mirabito, A. Steen, E. Calvo Alamillo, C. Carrillo, M. C. Fouz, H. Garcia Cabrera, J. Marin, J. Navarrete, J. Puerta Pelayo, A. Verdugo, F. Corriveau, L. Emberger, C. Graf, L. M.S. De Silva, F. Simon, C. Winter, J. Bonis, D. Breton, P. Cornebise, A. Gallas, J. Jeglot, A. Irles, J. Maalmi, R. Pöschl, A. Thiebault, F. Richard, D. Zerwas, J. Cvach, M. Janata, M. Kovalcuk, J. Kvasnicka, I. Polak, J. Smolik, V. Vrba, J. Zalesak, J. Zuklin, Y. Y. Duan, S. Li, J. Guo, J. F. Hu, F. Lagarde, Q. P. Shen, X. Wang, W. H. Wu, H. J. Yang, Y. F. Zhu

    Journal of Instrumentation   17 ( 7 )   2022.7   （ ISSN:1748-0221 eISSN:1748-0221 ）

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    The CALICE Semi-Digital Hadronic CALorimeter (SDHCAL) is the first technological prototype in a family of high-granularity calorimeters developed by the CALICE Collaboration to equip the experiments of future lepton colliders. The SDHCAL is a sampling calorimeter using stainless steel for absorber and Glass Resistive Plate Chambers (GRPC) as a sensitive medium. The GRPC are read out by 1 cm× 1 cm pickup pads combined to a multi-electronics. The prototype was exposed to hadron beams in both the CERN PS and the SPS beamlines in 2015 allowing the test of the SDHCAL in a large energy range from 3 GeV to 80 GeV. After introducing the method used to select the hadrons of our data and reject the muon and electron contamination, we present the energy reconstruction approach that we apply to the data collected from both beamlines and we discuss the response linearity and the energy resolution of the SDHCAL. The results obtained in the two beamlines confirm the excellent SDHCAL performance observed with the data collected with the same prototype in the SPS beamline in 2012. They also show the stability of the SDHCAL in different beam conditions and different time periods.

    DOI： 10.1088/1748-0221/17/07/P07017

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  • Improvement of systematic uncertainties for the neutron lifetime experiment at J-PARC

    Mogi T., Hasegawa T., Hirota K., Ichikawa G., Ieki S., Ino T., Iwashita Y., Kajiwara S., Kato Y., Kitaguchi M., Kitahara R., Koga J., Makise S., Matsuzaki S., Mishima K., Morikawa K., Nagakura N., Okabe H., Otono H., Seki Y., Sekiba D., Shima T., Shimizu H.E., Shimizu H.M., Sugisawa Y., Sumi N., Sumino H., Tanabe T., Tomita T., Uehara H., Yamada T., Yamashita S., Yano K., Yoshioka T.

    Proceedings of Science   380   2022.5

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    The neutron lifetime is one of the important parameters for particle physics and astrophysics. There is a 4.6σ (9.5 s) discrepancy between the results of the two typical methods. To solve this discrepancy, a new neutron lifetime experiment with a different method is in progress at J-PARC, and this experiment published the first result in 2020 of 898 ± 10(stat.) + 15/−18(syst.) s. We have performed improvements to reduce systematic uncertainties towards 1 s accuracy. The methods to measure the amount of 3He injected and in the working gas have been upgraded, and a new model for the space charge effect in the Monte Carlo simulation has been implemented.

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  • Neutron lifetime experiment with pulsed cold neutrons at J-PARC

    Ichikawa G., Fuwa Y., Hasegawa T., Hino M., Hirota K., Ino T., Iwashita Y., Kitaguchi M., Koga J., Matsuzaki S., Mishima K., Mogi T., Morikawa K., Okabe H., Otono H., Seki Y., Sekiba D., Shima T., Shimizu H., Shimizu H., Sumi N., Sumino H., Yamashita S., Yano K., Yoshioka T.

    Proceedings of Science   380   2022.5

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    A free neutron decays in a lifetime of about 880 s. Although the neutron lifetime is an important parameter in modern physics, there is a 4.6σ (9.5 s) discrepancy between the experimental results of two typical methods: the beam method and the storage method. We are carrying out a new experimental method to measure the neutron lifetime using a pulsed neutron beam at J-PARC MLF BL05 to determine the cause of the discrepancy, whether overlooked systematic uncertainties or new physics. A review of our experiment including the first physics result with acquired data during 2014 - 2016 and the status using new neutron optics are presented here.

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  • Angular distribution of γ rays from the p -wave resonance of Sn 118

    J. Koga, S. Takada, S. Endo, H. Fujioka, K. Hirota, K. Ishizaki, A. Kimura, M. Kitaguchi, Y. Niinomi, T. Okudaira, K. Sakai, T. Shima, H. M. Shimizu, Y. Tani, T. Yamamoto, H. Yoshikawa, T. Yoshioka

    Physical Review C   105 ( 5 )   2022.5   （ ISSN:2469-9985 eISSN:2469-9993 ）

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    The neutron energy-dependent angular distribution of γ rays from the Sn117(n,γ) reaction was measured with germanium detectors and a pulsed neutron beam. The angular distribution was clearly observed in γ-ray emissions with an energy of 9327 keV which corresponds to the transition from a neutron resonance of Sn117+n to the ground state of Sn118. The angular distribution causes an angular-dependent asymmetric resonance shape. An asymmetry ALH was defined as (NL-NH)/(NL+NH), where NL and NH are integrated values for lower- and higher-energy regions of a neutron resonance, respectively. We found that the ALH has the angular dependence of (Acosθγ+B), where θγ is the γ-ray emission angle with respect to the incident neutron momentum, with A=0.394±0.073 and B=0.118±0.029 in the 1.33 eV p-wave resonance.

    DOI： 10.1103/PhysRevC.105.054615

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  • Neutron lifetime experiment with pulsed cold neutrons at J-PARC

    Go Ichikawa, Yasuhiro Fuwa, Takuro Hasegawa, Masahiro Hino, Katsuya Hirota, Takashi Ino, Yoshihisa Iwashita, Masaaki Kitaguchi, Jun Koga, Shun Matsuzaki, Kenji Mishima, Takanori Mogi, Koki Morikawa, Hiroki Okabe, Hidetoshi Otono, Yoshichika Seki, Daiichiro Sekiba, Tatsushi Shima, Haruki Shimizu, Hirohiko M. Shimizu, Naoyuki Sumi, Hirochika Sumino, Satoru Yamashita, Kodai Yano, Tamaki Yoshioka

    Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021)   2022.3

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    Publishing type：Research paper (international conference proceedings)   Publisher：Sissa Medialab  

    DOI： 10.22323/1.380.0457

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  • Improvement of systematic uncertainties for the neutron lifetime experiment at J-PARC

    Takanori Mogi, Takuro Hasegawa, Katsuya Hirota, Go Ichikawa, Sei Ieki, Takashi Ino, Yoshihisa Iwashita, Shogo Kajiwara, Yu Kato, Masaaki Kitaguchi, Ryunosuke Kitahara, Jun Koga, So Makise, Shun Matsuzaki, Kenji Mishima, Koki Morikawa, Naoki NAGAKURA, Hiroki Okabe, Hidetoshi Otono, Yoshichika Seki, Daiichiro Sekiba, Tatsushi Shima, Haruki Shimizu, Hirohiko M. Shimizu, Yuki Sugisawa, Naoyuki Sumi, Hirochika Sumino, Tomohiko Tanabe, Tatsuhiko TOMITA, Hideaki Uehara, Takahito Yamada, Satoru Yamashita, Kodai Yano, Tamaki Yoshioka

    Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021)   2022.3

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    DOI： 10.22323/1.380.0458

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  • Erratum: Transverse asymmetry of γ rays from neutron-induced compound states of <sup>140</sup>La (Physical Review C (2020) 101 (064624) DOI: 10.1103/PhysRevC.101.064624)

    T. Yamamoto, T. Okudaira, S. Endo, H. Fujioka, K. Hirota, T. Ino, K. Ishizaki, A. Kimura, M. Kitaguchi, J. Koga, S. Makise, Y. Niinomi, T. Oku, K. Sakai, T. Shima, H. M. Shimizu, S. Takada, Y. Tani, H. Yoshikawa, T. Yoshioka

    Physical Review C   105 ( 3 )   2022.3   （ ISSN:2469-9985 eISSN:2469-9993 ）

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    We correct the sign of thetraverse asymmetry ALR in our previous paper The transverse asymmetry is derived from the correlation term snk? , where sn and k? are polarization of incident neutrons and momentum of emitted ? rays, respectively. The neutron polarization direction was determined using two measurements: (1) the measurement of the polarization direction of the circularly polarized laser which is used to polarize the 3He nuclei of the neutron polarizer, and (2) the measurement of the neutron polarization direction as it passes through the 3He neutron polarizer using a magnetic supermirror. However, in (1), the relation between the direction of the circular polarization and the spin of photons was misevaluated. Additionally, in (2), the relation between the neutron polarization direction reflected by the magnetic supermirror and the magnetic field applied to the magnetic supermirror was also misevaluated. Upon reevaluation we have deduced that the neutron polarization direction during the experiment was opposite to what was previously reported, and, hence, the sign of ALR should be reversed. As supporting evidence, the direction of the circular polarization of our laser system was obtained by measuring the electric paramagnetic resonance signal of Rb during laser pumping. The neutron polarization direction was also determined from the measurement of the parity violation at the 0.74-eV p-wave resonance of 139 La + n using our 3He neutron polarizer. These results also support that the neutron polarization direction was opposite to what was previously reported. Consequently, the transverse asymmetries for ? rays emitted in the transition from the 0.74-eV p-wave resonance to the ground state and inclusive ? rays are newly obtained as Agnd LR = - 0.60 ± 0.19 and Ainc LR = - 0.0045 ± 0.0080 , respectively. Similarly, Figs. 9, 11, 13, and 15 in the original paper should be replaced as Figs. 9, 11, 13, and 15 in this Erratum, respectively. The corrections do not affect results and conclusions of the original article. (Figure Presented).

    DOI： 10.1103/PhysRevC.105.039901

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  • Rabi-oscillation spectroscopy of the hyperfine structure of muonium atoms

    S. Nishimura, H. A. Torii, Y. Fukao, T. U. Ito, M. Iwasaki, S. Kanda, K. Kawagoe, D. Kawall, N. Kawamura, N. Kurosawa, Y. Matsuda, T. Mibe, Y. Miyake, N. Saito, K. Sasaki, Y. Sato, S. Seo, P. Strasser, T. Suehara, K. S. Tanaka, T. Tanaka, J. Tojo, A. Toyoda, Y. Ueno, T. Yamanaka, T. Yamazaki, H. Yasuda, T. Yoshioka, K. Shimomura

    Physical Review A   104 ( 2 )   2021.8

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    DOI： 10.1103/physreva.104.l020801

  • Measurement of Angular Distributions of (gamma )-rays from 139La+n to Excited States of 140La

    Takuya Okudaira, Shunsuke Endo, Hiroyuki Fujioka, Katsuya Hirota, Kohei Ishizaki, Atsushi Kimura, Masaaki Kitaguchi, Jun Koga, So Makise, Yudai Niinomi, Kenji Sakai, Tatsushi Shima, Hirohiko M. Shimizu, Shusuke Takada, Yuika Tani, Tomoki Yamamoto, Hiromoto Yoshikawa, Tamaki Yoshioka

    Proceedings of the 3rd J-PARC Symposium (J-PARC2019)   2021.3

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    DOI： 10.7566/jpscp.33.011121

  • Precise Neutron Lifetime Measurement Using Pulsed Neutron Beams at J-PARC

    N. Sumi, K. Hirota, G. Ichikawa, T. Ino, Y. Iwashita, S. Kajiwara, Y. Kato, M. Kitaguchi, K. Mishima, K. Morikawa, T. Mogi, H. Oide, H. Okabe, H. Otono, T. Shima, H. M. Shimizu, Y. Sugisawa, T. Tanabe, S. Yamashita, K. Yano, T. Yoshioka

    Proceedings of the 3rd J-PARC Symposium (J-PARC2019)   2021.3

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    DOI： 10.7566/jpscp.33.011056

  • Proof-of-principle Experiment for the Study of a New Intermediate-range Interaction Using Coherent Neutron Scattering

    Masayuki Hiromoto, Taichi Hori, Ryota Kondo, Shuhei Hara, Tatsushi Shima, Rintaro Nakabe, Noriko Oi, Hirohiko M. Shimizu, Katsuya Hirota, Masaaki Kitaguchi, Christopher C. Haddock, William M. Snow, Tamaki Yoshioka, Kenji Mishima, Takashi Ino

    Proceedings of the 3rd J-PARC Symposium (J-PARC2019)   2021.3

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    DOI： 10.7566/jpscp.33.011118

  • S-wave Resonance Analysis of 139La and 109Ag in the Compound Nuclear Process Towards T-violation Search

    Hiromoto Yoshikawa, Shunsuke Endo, Hiroyuki Fujioka, Katsuya Hirota, Kohei Ishizaki, Atsushi Kimura, Masaaki Kitaguchi, Jun Koga, So Makise, Yudai Niinomi, Takuya Okudaira, Kenji Sakai, Tatsushi Shima, Hirohiko M. Shimizu, Shusuke Takada, Yuika Tani, Tomoki Yamamoto, Tamaki Yoshioka

    Proceedings of the 3rd J-PARC Symposium (J-PARC2019)   2021.3

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    DOI： 10.7566/jpscp.33.011136

  • Study for the Experimental Sensitivity of T-violation Search in Compound Nuclear Reaction of 117Sn

    J. Koga, S. Endo, H. Fujioka, K. Hirota, K. Ishizaki, A. Kimura, M. Kitaguchi, S. Makise, Y. Niinomi, T. Okudaira, K. Sakai, T. Shima, H. M. Shimizu, S. Takada, Y. Tani, T. Yamamoto, H. Yoshikawa, T. Yoshioka

    Proceedings of the 3rd J-PARC Symposium (J-PARC2019)   2021.3

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    DOI： 10.7566/jpscp.33.011137

  • Study of (gamma )-ray from 4.53 eV p-wave Resonance of 111Cd Using Compound Nuclear Reaction

    S. Makise, S. Endo, H. Fujioka, K. Hirota, K. Ishizaki, A. Kimura, M. Kitaguchi, J. Koga, Y. Niinomi, T. Okudaira, K. Sakai, T. Shima, H. M. Shimizu, S. Takada, Y. Tani, T. Yamamoto, H. Yoshikawa, T. Yoshioka

    Proceedings of the 3rd J-PARC Symposium (J-PARC2019)   2021.3

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    DOI： 10.7566/jpscp.33.011138

  • Measurement of γ rays from 6LiF tile as an inner wall of a neutron-decay detector

    J. Koga, S. Ieki, A. Kimura, M. Kitaguchi, R. Kitahara, K. Mishima, N. Nagakura, T. Okudaira, H. Otono, H. M. Shimizu, N. Sumi, S. Takada, T. Tomita, T. Yamada, T. Yoshioka

    Journal of Instrumentation   16 ( 2 )   2021.2

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    A neutron lifetime measurement conducted at the Japan Proton Accelerator Research Complex (J-PARC) is counting the number of electrons from neutron decays with a time projection chamber (TPC). The γ rays produced in the TPC cause irreducible background events. To achieve the precise measurement, the inner walls of the TPC consist of 6Li-enriched lithium-fluoride (6LiF) tiles to suppress the amount of γ rays. In order to estimate the amount of γ rays from the 6LiF tile, prompt gamma ray analysis (PGA) measurements were performed using germanium detectors. We reconstructed the measured γ-ray energy spectrum using a Monte Carlo simulation with the stripping method. Comparing the measured spectrum with a simulated one, the number of γ rays emitted from the6LiF tile was (2.3+0.7-0.3) × 10-4 per incident neutron. This is 1.4+0.5-0.2 times the value assumed for a mole fraction of the 6LiF tile. We concluded that the amount of γ rays produced from the 6LiF tile is not more twice the originally assumed value.

    DOI： 10.1088/1748-0221/16/02/P02001

  • Development of a Vertex Finding Algorithm using Recurrent Neural Network.

    Kiichi Goto, Taikan Suehara, Tamaki Yoshioka, Masakazu Kurata, Hajime Nagahara, Yuta Nakashima, Noriko Takemura, Masako Iwasaki

    CoRR   abs/2101.11906   2021.1

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  • Polarized proton spin filter for epithermal neutrons based on dynamic nuclear polarization using photo-excited triplet electron spins

    Shusuke Takada, Kenichiro Tateishi, Yasuo Wakabayashi, Yoshimasa Ikeda, Tamaki Yoshioka, Yoshie Otake, Tomohiro Uesaka

    PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS   2020 ( 12 )   2020.12

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    To polarize neutrons with energy beyond 0.1 eV, we developed a novel polarized proton spin filter based on dynamic nuclear polarization using photo-excited triplet electron spins. The spin filter consists of a single crystal of naphthalene doped with deuterated pentacene and has a size of empty set15 x 4 mm(3), allowing it to cover a wide beam diameter. It was operated in 0.35 T and at 90 K. We succeeded in polarizing neutrons in the energy range 0.1-10 eV using a RIKEN acceleratordriven compact neutron source. The averaged values of the proton and neutron polarization were 0.250 +/- 0.050 and 0.076 +/- 0.015, respectively.

    DOI： 10.1093/ptep/ptaa111

  • Thick target neutron yields from LiF, C, Si, Ni, Mo, and Ta bombarded by 6.7 MeV/u deuterons

    Hayato Takeshita, Yukinobu Watanabe, Keita Nakano, Seiya Manabe, Katsumi Aoki, Naoto Araki, Kosuke Yoshinami, Tadahiro Kin, Nobuhiro Shigyo, Jun Koga, So Makise, Tamaki Yoshioka, Masaomi Tanaka, Takashi Teranishi

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   983   2020.12

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    Double-differential thick target neutron yields from the bombardment of LiF, C, Si, Ni, Mo, and Ta targets by 6.7 MeV/u deuterons were measured at forward angles using an EJ-301 liquid organic scintillator. The neutron energy spectra were derived via an unfolding method using the FORIST code with the detector response function calculated using the SCINFUL-QMD code. The neutron energy spectra and total neutron yields at 0 from the deuteron incidences were compared with the previous data of triton incidences on LiF, Si, Ni, Mo, and Ta targets measured at the same incident energy per nucleon. The comparison revealed that deuterons yield more neutrons for low-Z targets than tritons, and less neutrons for high-Z targets. The measured neutron energy spectra were compared with model calculations using the DEUteron-induced Reaction Analysis Code System (DEURACS). DEURACS successfully reproduced the neutron spectra from all the targets. For the triton incidence, some calculation codes were benchmarked, with JQMD/GEM and CCONE yielding good agreement with the measured neutron spectra at 0 . ∘ ∘

    DOI： 10.1016/j.nima.2020.164582

  • Neutron lifetime measurement with pulsed cold neutrons

    K. Hirota, G. Ichikawa, S. Ieki, T. Ino, Y. Iwashita, M. Kitaguchi, R. Kitahara, J. Koga, K. Mishima, T. Mogi, K. Morikawa, A. Morishita, N. Nagakura, H. Oide, H. Okabe, H. Otono, Y. Seki, D. Sekiba, T. Shima, H. M. Shimizu, N. Sumi, H. Sumino, T. Tomita, H. Uehara, T. Yamada, S. Yamashita, K. Yano, M. Yokohashi, T. Yoshioka

    Progress of Theoretical and Experimental Physics   2020 ( 12 )   2020.12

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    The neutron lifetime has been measured by comparing the decay rate with the reaction rate of 3He nuclei of a pulsed neutron beam from the spallation neutron source at the Japan Proton Accelerator Research Complex (J-PARC). The decay rate and the reaction rate were determined by simultaneously detecting electrons from the neutron decay and protons from the 3He(n,p)3H reaction using a gas chamber, the working gas of which contains diluted 3He. The measured neutron lifetime was 898 ± 10stat+15-18 sys s.

    DOI： 10.1093/ptep/ptaa169

  • Particle identification using Boosted Decision Trees in the Semi-Digital Hadronic Calorimeter prototype

    D. Boumediene, A. Pingault, M. Tytgat, B. Bilki, D. Northacker, Y. Onel, G. Cho, D. W. Kim, S. C. Lee, W. Park, S. Vallecorsa, Y. Deguchi, K. Kawagoe, Y. Miura, R. Mori, I. Sekiya, T. Suehara, T. Yoshioka, L. Caponetto, C. Combaret, R. Ete, G. Garillot, G. Grenier, J. C. Ianigro, T. Kurca, I. Laktineh, B. Liu, B. Li, N. Lumb, H. Mathez, L. Mirabito, A. Steen, E. Calvo Alamillo, M. C. Fouz, J. Marin, J. Navarrete, J. Puerta Pelayo, A. Verdugo, F. Corriveau, M. Chadeeva, M. Danilov, L. Emberger, C. Graf, L. M.S. De Silva, F. Simon, C. Winter, J. Bonis, D. Breton, P. Cornebise, A. Gallas, J. Jeglot, A. Irles, J. Maalmi, R. Pöschl, A. Thiebault, F. Richard, D. Zerwas, M. Anduze, V. Balagura, V. Boudry, J. C. Brient, E. Edy, F. Gastaldi, R. Guillaumat, F. Magniette, J. Nanni, H. Videau, S. Callier, F. Dulucq, Ch De La Taille, G. Martin-Chassard, L. Raux, N. Seguin-Moreau, J. Cvach, M. Janata, M. Kovalcuk, J. Kvasnicka, I. Polak, J. Smolik, V. Vrba, J. Zalesak, J. Zuklin, Y. Y. Duan, S. Li, J. Guo, J. F. Hu, F. Lagarde, Q. P. Shen, X. Wang, W. H. Wu, H. J. Yang, Y. F. Zhu, L. Emberger, C. Graf, F. Simon, C. Winter

    Journal of Instrumentation   15 ( 10 )   2020.10

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    The CALICE Semi-Digital Hadronic CALorimeter (SDHCAL) prototype using Glass Resistive Plate Chambers as a sensitive medium is the first technological prototype of a family of high-granularity calorimeters developed by the CALICE collaboration to equip the experiments of future leptonic colliders. It was exposed to beams of hadrons, electrons and muons several times in the CERN PS and SPS beamlines between 2012 and 2018. We present here a new method of particle identification within the SDHCAL using the Boosted Decision Trees (BDT) method applied to the data collected in 2015. The performance of the method is tested first with Geant4-based simulated events and then on the data collected by the SDHCAL in the energy range between 10 and 80 GeV with 10 GeV energy steps. The BDT method is then used to reject the electrons and muons that contaminate the SPS hadron beams. The rejection power of the new method is estimated to be as high as 99.0&#37; for the muons and 99.4&#37; for the electrons associated to a pion selection efficiency of about 95.0&#37;.

    DOI： 10.1088/1748-0221/15/10/P10009

  • SliT: A Strip-Sensor Readout Chip with Subnanosecond Time Walk for the J-PARC Muon g - 2/EDM Experiment

    Tetsuichi Kishishita, Yutaro Sato, Yoichi Fujita, Eitaro Hamada, Tsutomu Mibe, Tsubasa Nagasawa, Shohei Shirabe, Masayoshi Shoji, Taikan Suehara, Manobu M. Tanaka, Junji Tojo, Yuki Tsutumi, Takashi Yamanaka, Tamaki Yoshioka

    IEEE Transactions on Nuclear Science   67 ( 9 )   2089 - 2095   2020.9

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    A new silicon-strip readout chip named 'SliT' has been developed for the measurement of the muon anomalous magnetic moment and electric dipole moment (EDM) of the muon at Japan Proton Accelerator Research Complex (J-PARC). The SliT chip is designed in the Silterra 180-nm CMOS technology with mixed-signal integrated circuits. An analog circuit incorporates a conventional charge-sensitive amplifier, shaping amplifiers, and two distinct discriminators for each of the 128 identical channels. A digital part includes storage memories, an event building block, a serializer, and low voltage differential signaling (LVDS) drivers. A distinct feature of the SliT is utilization of the zero-crossing architecture, which consists of a CR- RC filter followed by a CR circuit as a voltage differentiator. This architecture allows generating hit signals with subnanosecond amplitude-independent time walk, which is the primary requirement for the experiment. The test results show a time walk of 0.38 ± 0.16 ns between 0.5 and 3 MIP signals. The equivalent noise charge is 1547± 75 e- (rms) at Cdet =33 pF as a strip-sensor capacitance. SliT128C satisfies all requirements of the J-PARC muon g-2 /EDM experiment.

    DOI： 10.1109/TNS.2020.3012924

  • Development of a front-end ASIC for silicon-strip detectors of the J-PARC muon g−2/EDM experiment

    Yutaro Sato, Yowichi Fujita, Eitaro Hamada, Tetsuichi Kishishita, Tsutomu Mibe, Osamu Sasaki, Masayoshi Shoji, Taikan Suehara, Manobu Tanaka, Junji Tojo, Tuki Tsutsumi, Takashi Yamanaka, Tamaki Yoshioka

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   969   2020.7

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    A front-end application specific integrated circuit (ASIC) with high rate capability and deep memory buffer is needed for the silicon-strip detector for the J-PARC muon g−2/EDM experiment. In this experiment, we reconstruct a positron track from muon decay by the silicon-strip detector and measure the muon anomalous magnetic moment and the electric dipole moment precisely to explore new physics beyond the Standard Model. The front-end ASIC is required to tolerate hit rates of 1.4 MHz per strip, to be stable to the change of hit rate by a factor of 150 from the beginning to the end of the measurement, and to have deep memory for the period of 40μs with 5 ns time resolution. To satisfy the experimental requirements, we designed a prototype ASIC “SliT128B” with the Silterra 180 nm CMOS technology. We report on the design and the performance of the SliT128B.

    DOI： 10.1016/j.nima.2020.164035

  • Transverse asymmetry of γ rays from neutron-induced compound states of La 140 Reviewed

    T. Yamamoto, T. Okudaira, S. Endo, H. Fujioka, K. Hirota, T. Ino, K. Ishizaki, A. Kimura, M. Kitaguchi, J. Koga, S. Makise, Y. Niinomi, T. Oku, K. Sakai, T. Shima, H. M. Shimizu, S. Takada, Y. Tani, H. Yoshikawa, T. Yoshioka

    Physical Review C   101 ( 6 )   2020.6

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    An sp-mixing model, which describes a compound nuclear reaction by mixing partial waves, predicts a correlation term in this reaction. A detailed study of the sp-mixing model is required to study the feasibility of a new type of time reversal symmetry violation search experiment. The correlation term σn·(kn×kγ) in the La139(n - ,γ) reaction has been studied by measuring γ-ray and neutron energies utilizing epithermal polarized neutrons and germanium detectors. The transverse asymmetry for single γ-ray transition was measured to be 0.60±0.19 in the p-wave resonance.

    DOI： 10.1103/PhysRevC.101.064624

  • Study of position sensitive silicon detector (PSD) for SiW-ECAL at ILC

    Y. Uesugi, R. Mori, H. Yamashiro, T. Suehara, T. Yoshioka, K. Kawagoe

    Journal of Instrumentation   15 ( 5 )   2020.5

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    For the past few years we have been developing position sensitive silicon detectors (PSDs) which have an electrode at each of four corners so that incident position of a charged particle can be obtained with signal from the electrodes. It is expected that the position resolution of the silicon-tungsten electromagnetic calorimeter (SiW-ECAL) of the International Large Detector (ILD) will be improved by introducing PSDs to detection layers. In the previous production we found that the charge separation is not optimal due to the readout impedance. To solve the issue, we produced new PSDs with higher surface resistance with an additional resistive layer on the surface. We also implemented several techniques to decrease position distortion and increase signal-to-noise ratio which are essential for optimal position resolution. We present first measurements of the performance of one new PSD using a strontium 90 source, and using the Skiroc2-CMS ASIC.

    DOI： 10.1088/1748-0221/15/05/C05033

  • Study of silicon sensors for precise timing measurement

    Y. Deguchi, K. Kawagoe, R. Mori, E. Mestre, T. Suehara, T. Yoshioka

    Journal of Instrumentation   15 ( 5 )   2020.5

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    Silicon sensors with high timing resolution can help particle identification in the International Linear Collider (ILC). We are studying Low Gain Avalanche Detectors (LGADs) as a sensor with high timing resolution. As a step to develop LGADs we are now characterizing Avalanche Photo Diodes (APDs), which have similar multiplication structure as LGADs. Particles from radioisotopes are used for studies in this paper.

    DOI： 10.1088/1748-0221/15/05/C05051

  • Performance evaluation of a silicon strip detector for positrons/electrons from a pulsed a muon beam

    T. Aoyagi, Y. Honda, H. Ikeda, M. Ikeno, K. Kawagoe, T. Kohriki, T. Kume, T. Mibe, K. Namba, S. Nishimura, N. Saito, O. Sasaki, N. Sato, Y. Sato, H. Sendai, K. Shimomura, S. Shirabe, M. Shoji, T. Suda, T. Suehara, T. Takatomi, M. Tanaka, J. Tojo, K. Tsukada, T. Uchida, T. Ushizawa, H. Wauke, T. Yamanaka, T. Yoshioka

    Journal of Instrumentation   15 ( 4 )   2020.4

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    A high-intensity pulsed muon beam is becoming available at the at the Japan Proton Accelerator Research Complex (J-PARC). Many experiments to study fundamental physics using this high-intensity muon beam are proposed. An experiment to measure the muon magnetic moment anomaly (g-2) and the muon electric dipole moment (EDM) is one of these experiments and it requires a tracking detector for positrons from muon decay. Fine segmentation is required in a detector to tolerate the high rate of positrons. The time resolution is required to be much better than the muon anomalous spin precession period while a buffer depth of a front-end electronics needs to be much longer than the accelerated muon lifetime. Requirements of this detector also meet requirements of a measurement of the muonium hyperfine structure interval at the J-PARC and another experiment to measure the proton charge radius at Tohoku University. We have developed a single-sided silicon strip sensor with a 190 μm pitch, a front-end electronics with a sampling rate of 200 MHz and a buffer memory depth of 8192, and a data acquisition system based on DAQ-Middleware for the J-PARC muon g-2/EDM experiment. We have fabricated detector modules consisting of this sensor and the front-end electronics. Performance of fabricated detector modules was evaluated at a laboratory and a beam test using the positron beam at Tohoku University. The detector is confirmed to satisfy all requirements of the experiments except for the time walk, which will be solved by the next version of a front-end electronics.

    DOI： 10.1088/1748-0221/15/04/P04027

  • Positron tracking detector for J-PARC muon g−2/EDM experiment Reviewed

    T. Yamanaka, T. Aoyagi, H. Ikeda, M. Ikeno, T. Ito, K. Ueno, T. Uchida, K. Kawagoe, T. Kishishita, T. Kume, T. Kohriki, N. Saito, O. Sasaki, T. Sata, N. Sato, Y. Sato, M. Shoji, S. Shirabe, T. Suehara, Y. Sue, T. Suda, H. Sendai, T. Takatomi, M. Tanaka, K. Tsukada, Y. Tsutsumi, J. Tojo, K. Namba, S. Nishimura, Y. Honda, M. Matama, T. Mibe, T. Murakami, H. Yasuda, T. Yoshioka

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   958   2020.4

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    The positron tracking detector is developed for the J-PARC muon g−2/EDM (E34) experiment. It uses silicon strip sensors for positron detection and signals from sensors are transferred to the front-end readout system via flexible printed circuits (FPCs) glued on the sensors. The front-end readout system consists of application specific integrated circuits (ASICs) on FPCs and the field-programmable gate array (FPGA)-based readout board. Mass production of silicon strip sensors is ongoing. Designs of the FPC on the sensor and the front-end ASIC were fixed and their mass production has been started. Development of other detector components are also ongoing. The status of these developments and fabrications are presented.

    DOI： 10.1016/j.nima.2019.162786

  • COMET Phase-I technical design report

    R. Abramishvili, G. Adamov, R. R. Akhmetshin, A. Allin, J. C. Angélique, V. Anishchik, M. Aoki, D. Aznabayev, I. Bagaturia, G. Ban, Y. Ban, D. Bauer, D. Baygarashev, A. E. Bondar, C. Cârloganu, B. Carniol, T. T. Chau, J. K. Chen, S. J. Chen, Y. E. Cheung, W. Da Silva, P. D. Dauncey, C. Densham, G. Devidze, P. Dornan, A. Drutskoy, V. Duginov, Y. Eguchi, L. B. Epshteyn, P. Evtoukhovitch, S. Fayer, G. V. Fedotovich, M. Finger, M. Finger, Y. Fujii, Y. Fukao, J. L. Gabriel, P. Gay, E. Gillies, D. N. Grigoriev, K. Gritsay, V. H. Hai, E. Hamada, I. H. Hashim, S. Hashimoto, O. Hayashi, T. Hayashi, T. Hiasa, Z. A. Ibrahim, Y. Igarashi, F. V. Ignatov, M. Iio, K. Ishibashi, A. Issadykov, T. Itahashi, A. Jansen, X. S. Jiang, P. Jonsson, T. Kachelhoffer, V. Kalinnikov, E. Kaneva, F. Kapusta, H. Katayama, K. Kawagoe, R. Kawashima, N. Kazak, V. F. Kazanin, O. Kemularia, A. Khvedelidze, M. Koike, T. Kormoll, G. A. Kozlov, A. N. Kozyrev, M. Kravchenko, B. Krikler, G. Kumsiashvili, Y. Kuno, Y. Kuriyama, Y. Kurochkin, A. Kurup, B. Lagrange, J. Lai, M. J. Lee, H. B. Li, R. P. Litchfield, W. G. Li, T. Loan, D. Lomidze, I. Lomidze, P. Loveridge, G. Macharashvili, Y. Makida, Y. J. Mao, O. Markin, Y. Matsuda, A. Melkadze, A. Melnik, T. Mibe, S. Mihara, N. Miyamoto

    Progress of Theoretical and Experimental Physics   2020 ( 3 )   2020.3

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    The Technical Design for the COMET Phase-I experiment is presented in this paper. COMET is an experiment at J-PARC, Japan, which will search for neutrinoless conversion of muons into electrons in the field of an aluminum nucleus (μ-e conversion, μ N → e N); a lepton flavor-violating process. The experimental sensitivity goal for this process in the Phase-I experiment is 3.1 × 10 , or 90&#37; upper limit of a branching ratio of 7 × 10 , which is a factor of 100 improvement over the existing limit. The expected number of background events is 0.032. To achieve the target sensitivity and background level, the 3.2 kW 8 GeV proton beam from J-PARC will be used. Two types of detectors, CyDet and StrECAL, will be used for detecting the μ-e conversion events, and for measuring the beam-related background events in view of the Phase-II experiment, respectively. Results from simulation on signal and background estimations are also described. - - -15 -15

    DOI： 10.1093/ptep/ptz125

  • Beam test performance of the highly granular SiW-ECAL technological prototype for the ILC Reviewed

    K. Kawagoe, Y. Miura, I. Sekiya, T. Suehara, T. Yoshioka, S. Bilokin, J. Bonis, P. Cornebise, A. Gallas, A. Irles, R. Pöschl, F. Richard, A. Thiebault, D. Zerwas, M. Anduze, V. Balagura, V. Boudry, J. C. Brient, E. Edy, G. Fayolle, M. Frotin, F. Gastaldi, R. Guillaumat, A. Lobanov, M. Louzir, F. Magniette, J. Nanni, M. Rubio-Roy, K. Shpak, H. Videau, D. Yu, S. Callier, F. Dulucq, Ch de la Taille, N. Seguin-Moreau, J. E. Augustin, R. Cornat, J. David, P. Ghislain, D. Lacour, L. Lavergne, J. M. Parraud, J. S. Chai, D. Jeans

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   950   2020.1

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    The technological prototype of the CALICE highly granular silicon–tungsten electromagnetic calorimeter (SiW-ECAL) was tested in a beam at DESY in 2017. The setup comprised seven layers of silicon sensors. Each layer comprised four sensors, with each sensor containing an array of 256 5.5×5.5 mm silicon PIN diodes. The four sensors covered a total area of 18 × 18 cm and comprised a total of 1024 channels. The readout was split into a trigger line and a charge signal line. Key performance results for signal over noise for the two output lines are presented, together with a study of the uniformity of the detector response. Measurements of the response to electrons for the tungsten loaded version of the detector are also presented. 2

    DOI： 10.1016/j.nima.2019.162969

  • Measurement of the angular distribution of γ-rays after neutron capture by 139La for a T-violation search Reviewed

    Takuya Okudaira, Hirohiko M. Shimizu, Masaaki Kitaguchi, Katsuya Hirota, Christopher C. Haddock, Ikuya Ito, Tomoki Yamamoto, Shunsuke Endo, Kohei Ishizaki, Takumi Sato, Shusuke Takada, Jun Koga, Tamaki Yoshioka, Takashi Ino, Kouichiro Asahi, Takamasa Momose, Takahiro Iwata, Takayuki Oku, Kenji Sakai, Atsushi Kimura, Taro Nakao, Masanori Hino, Tatsushi Shima, Yutaka Yamagata

    EPJ Web of Conferences   2019.12

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    DOI： 10.1051/epjconf/201921909001

  • Characterisation of different stages of hadronic showers using the CALICE Si-W ECAL physics prototype Reviewed

    G. Eigen, T. Price, N. K. Watson, A. Winter, Y. Do, A. Khan, D. Kim, G. C. Blazey, A. Dyshkant, K. Francis, V. Zutshi, K. Kawagoe, Y. Miura, R. Mori, I. Sekiya, T. Suehara, T. Yoshioka, J. Apostolakis, J. Giraud, D. Grondin, J. Y. Hostachy, O. Bach, V. Bocharnikov, E. Brianne, K. Gadow, P. Göttlicher, O. Hartbrich, D. Heuchel, F. Krivan, K. Krüger, J. Kvasnicka, S. Lu, O. Pinto, A. Provenza, M. Reinecke, F. Sefkow, S. Schuwalow, Y. Sudo, H. L. Tran, P. Buhmann, E. Garutti, S. Laurien, D. Lomidze, M. Matysek, G. W. Wilson, D. Belver, E. Calvo Alamillo, M. C. Fouz, H. García Cabrera, J. Marín, J. Navarrete, J. Puerta Pelayo, A. Verdugo, L. Masetti, M. Chadeeva, M. Danilov, M. Gabriel, L. Emberger, C. Graf, Y. Israeli, F. Simon, M. Szalay, H. Windel, M. S. Amjad, S. Bilokin, J. Bonis, D. Breton, P. Cornebise, P. Doublet, A. Gallas, J. Jeglot, A. Irles, H. Li, J. Maalmi, R. Pöschl, A. Thiebault, F. Richard, D. Zerwas, M. Anduze, V. Balagura, E. Becheva, V. Boudry, J. C. Brient, R. Cornat, E. Edy, G. Fayolle, F. Gastaldi, H. Videau, S. Callier, F. Dulucq, Ch de la Taille, G. Martin-Chassard, L. Raux, N. Seguin-Moreau, J. Cvach, M. Janata, M. Kovalcuk, I. Polak, J. Smolik, V. Vrba

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   937   41 - 52   2019.9

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    A detailed investigation of hadronic interactions is performed using π -mesons with energies in the range 2–10 GeV incident on a high granularity silicon–tungsten electromagnetic calorimeter. The data were recorded at FNAL in 2008. The region in which the π -mesons interact with the detector material and the produced secondary particles are characterised using a novel track-finding algorithm that reconstructs tracks within hadronic showers in a calorimeter in the absence of a magnetic field. The principle of carrying out detector monitoring and calibration using secondary tracks is also demonstrated. − −

    DOI： 10.1016/j.nima.2019.04.111

  • Improved accuracy in the determination of the thermal cross section of 14N(n, p) 14C for neutron lifetime measurement Reviewed

    R. Kitahara, K. Hirota, S. Ieki, T. Ino, Y. Iwashita, M. Kitaguchi, J. Koga, K. Mishima, A. Morishita, N. Nagakura, H. Oide, H. Otono, Y. Seki, D. Sekiba, T. Shima, H. M. Shimizu, N. Sumi, H. Sumino, K. Taketani, T. Tomita, T. Yamada, S. Yamashita, M. Yokohashi, T. Yoshioka

    Progress of Theoretical and Experimental Physics   2019 ( 9 )   2019.9

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    In a neutron lifetime measurement at the Japan Proton Accelerator Complex, the neutron lifetime is calculated from the neutron decay rate and the incident neutron flux. The flux is obtained by counting the protons emitted from the neutron absorption reaction of He gas, which is diluted in a mixture of working gas in a detector. Hence, it is crucial to determine the amount of He in the mixture. In order to improve the accuracy of the number density of the He nuclei, we have suggested using the N(n, p) C reaction as a reference because this reaction involves similar kinetic energy to the He(n,p) H reaction and a smaller reaction cross section to introduce reasonable large partial pressure. The uncertainty of the recommended value of the cross section, however, is not satisfied with our requirement. In this paper we report the most accurate experimental value of the cross section of the N(n,p) C reaction at a neutron velocity of 2200 m s , measured relative to the He(n,p) H reaction. The result was 1.868 pm 0.003 (stat.) ± 0.006 (sys.) b. Additionally, the cross section of the O(n,α) C reaction at the neutron velocity is also redetermined as 249 ± 6 mb. 3 3 3 14 14 3 3 14 14 -1 3 3 17 14

    DOI： 10.1093/ptep/ptz096

  • A new approach for measuring the muon anomalous magnetic moment and electric dipole moment Reviewed

    M. Abe, S. Bae, G. Beer, G. Bunce, H. Choi, S. Choi, M. Chung, W. Da Silva, S. Eidelman, M. Finger, Y. Fukao, T. Fukuyama, S. Haciomeroglu, K. Hasegawa, K. Hayasaka, N. Hayashizaki, H. Hisamatsu, T. Iijima, H. Iinuma, H. Ikeda, M. Ikeno, K. Inami, K. Ishida, T. Itahashi, M. Iwasaki, Y. Iwashita, Y. Iwata, R. Kadono, S. Kamal, T. Kamitani, S. Kanda, F. Kapusta, K. Kawagoe, N. Kawamura, B. Kim, Y. Kim, T. Kishishita, R. Kitamura, H. Ko, T. Kohriki, Y. Kondo, T. Kume, M. J. Lee, S. Lee, W. Lee, G. M. Marshall, Y. Matsuda, T. Mibe, Y. Miyake, T. Murakami, K. Nagamine, H. Nakayama, S. Nishimura, D. Nomura, T. Ogitsu, S. Ohsawa, K. Oide, Y. Oishi, S. Okada, A. Olin, Z. Omarov, M. Otani, G. Razuvaev, A. Rehman, N. Saito, N. F. Saito, K. Sasaki, O. Sasaki, N. Sato, Y. Sato, Y. K. Semertzidis, H. Sendai, Y. Shatunov, K. Shimomura, M. Shoji, B. Shwartz, P. Strasser, Y. Sue, T. Suehara, C. Sung, K. Suzuki, T. Takatomi, M. Tanaka, J. Tojo, Y. Tsutsumi, T. Uchida, K. Ueno, S. Wada, E. Won, H. Yamaguchi, T. Yamanaka, A. Yamamoto, T. Yamazaki, H. Yasuda, M. Yoshida, T. Yoshioka

    Progress of Theoretical and Experimental Physics   2019 ( 5 )   2019.5

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    This paper introduces a new approach to measure the muon magnetic moment anomaly aμ = (g - 2)/2 and the muon electric dipole moment (EDM) dμ at the J-PARC muon facility. The goal of our experiment is to measure aμ and dμ using an independent method with a factor of 10 lower muon momentum, and a factor of 20 smaller diameter storage-ring solenoid compared with previous and ongoing muon g - 2 experiments with unprecedented quality of the storage magnetic field. Additional significant differences from the present experimental method include a factor of 1000 smaller transverse emittance of the muon beam (reaccelerated thermal muon beam), its efficient vertical injection into the solenoid, and tracking each decay positron from muon decay to obtain its momentum vector. The precision goal for aμ is a statistical uncertainty of 450 parts per billion (ppb), similar to the present experimental uncertainty, and a systematic uncertainty less than 70 ppb. The goal for EDM is a sensitivity of 1.5 × 10 ecm. -21

    DOI： 10.1093/ptep/ptz030

  • Development of silicon strip detector for J-PARC muon g-2/EDM experiment

    Yutaro Sato, Masahiro Ikeno, Tetsuichi Kishishita, Takashi Kohriki, Tatsuya Kume, Tsutomu Mibe, Takeshi Murakami, Naohito Saito, Osamu Sasaki, Nobuhiko Sato, Hiroshi Sendai, Masayoshi Shoji, Toshikazu Takatomi, Manobu Tanaka, Tomohisa Uchida, Kazuki Ueno, Hirokazu Ikeda, Takumi Ito, Kiyotomo Kawagoe, Masato Matama, Shohei Shirabe, Taikan Suehara, Junji Tojo, Yuki Tsutsumi, Takashi Yamanaka, Tamaki Yoshioka, Shoichiro Nishimura, Hiromasa Yasuda

    Proceedings of Science   340   2019.1

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    The muon anomalous magnetic moment (g−2) and electric dipole moment (EDM) are sensitive to new physics beyond the Standard Model. We aim to measure (g−2) with a precision of 0.1 parts per million and search for EDM with a sensitivity of 10 e·cm at J-PARC. In this experiment, we use a silicon strip detector with high granularity and fast response to detect positrons from muon decay. We report on the development status of the silicon strip detector. µ µ − 21

  • Verification of the compound nuclear model for T-violation search

    T. Yamamoto, H. M. Shimizu, K. Ishizaki, Y. Niinomi, M. Kitaguchi, S. Takada, J. Koga, S. Makise, T. Yoshioka, A. Kimura, K. Sakai, T. Oku, T. Okudaira, S. Endo, Y. Tani, H. Fujioka, H. Yoshikawa, K. Hirota, T. Shima

    Proceedings of Science   356   2019.1

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    Large sources of parity violation have been observed in compound nuclear reactions. These enhancements are described by the compound nuclear model, which can be used to describe the angular correlation of γ-rays produced in (n; γ) reactions in medium-heavy nuclei. It has also been suggested that these same reactions could lead to a similar enhancement in time reversal violating processes. Therefore, we are interested in verifying the compound nuclear model by studying the (n; γ) reaction using polarized neutrons. In this paper, we discuss the installation and characterization of a neutron polarizer used in the (n; γ) measurement with transversely polarized neutrons.

    DOI： 10.22323/1.356.0042

  • Study of fermion pair events at the 250 GeV ILC Reviewed

    Yuto Deguchi, Hiroaki Yamashiro, Taikan Suehara, Tamaki Yoshioka, Keisuke Fujii, Kiyotomo Kawagoe

    2018 International Workshop on Future Linear Colliders, LCWS 2018   2019.1

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    Precise measurements of electroweak processes at the International Linear Collider (ILC) will provide unique opportunities to explore new physics beyond the Standard Model. Fermion pair production events are sensitive to new interactions involving a new heavy gauge boson or an electroweak interacting massive particle (EWIMP).We studied the mass reach of new particles at the ILC with s = 250 GeV by using e e → e e and e e → µ µ events. We show that a mass reach for BSM particles can be determined with 90% confidence level using a toy Monte Carlo technique. + − + − + − + −

  • Quark charge identification for e+e− to qq¯ study Reviewed

    Y. Uesugi, H. Yamashiro, T. Suehara, T. Yoshioka, K. Kawagoe

    2018 International Workshop on Future Linear Colliders, LCWS 2018   2019.1

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    The process e e → qq¯ plays an important role in electroweak precision measurements. We are studying this process with ILD full simulation. The key for the reconstruction of the quark pair final states is quark charge identification (ID). We report the progress of charge ID study in detail. In particular, we investigate the performance of the charge ID for each decay mode of the heavy hadrons to know the possibilities of improvements of the charge ID. + −

  • New precise measurements of muonium hyperfine structure at J-PARC MUSE Reviewed

    P. Strasser, M. Abe, M. Aoki, S. Choi, Y. Fukao, Y. Higashi, T. Higuchi, H. Iinuma, Y. Ikedo, K. Ishida, T. Ito, T. U. Ito, M. Iwasaki, R. Kadono, O. Kamigaito, S. Kanda, K. Kawagoe, D. Kawall, N. Kawamura, M. Kitaguchi, A. Koda, K. M. Kojima, K. Kubo, M. Matama, Y. Matsuda, Y. Matsudate, T. Mibe, Y. Miyake, T. Mizutani, K. Nagamine, S. Nishimura, T. Ogitsu, N. Saito, K. Sasaki, S. Seo, H. M. Shimizu, K. Shimomura, T. Suehara, M. Tajima, K. S. Tanaka, T. Tanaka, J. Tojo, D. Tomono, H. A. Torii, E. Torikai, A. Toyoda, Y. Tsutsumi, K. Ueno, Y. Ueno, D. Yagi, A. Yamamoto, T. Yamanaka, T. Yamazaki, H. Yasuda, M. Yoshida, T. Yoshioka

    EPJ Web of Conferences (in press)   2019.1

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    New precise measurements of muonium hyperfine structure at J-PARC MUSE

  • Hadronic energy resolution of a combined high granularity scintillator calorimeter system Reviewed

    J. Repond, L. Xia, J. Apostolakis, G. Folger, V. Ivantchenko, A. Ribon, V. Uzhinskiy, D. Boumediene, V. Francais, G. C. Blazey, A. Dyshkant, K. Francis, V. Zutshi, O. Bach, E. Brianne, A. Ebrahimi, K. Gadow, P. Göttlicher, O. Hartbrich, F. Krivan, K. Krüger, J. Kvasnicka, S. Lu, C. Neubüser, A. Provenza, M. Reinecke, F. Sefkow, S. Schuwalow, Y. Sudo, H. L. Tran, P. Buhmann, E. Garutti, S. Laurien, D. Lomidze, M. Matysek, A. Kaplan, H. Ch Schultz-Coulon, G. W. Wilson, D. Jeans, K. Kawagoe, I. Sekiya, T. Suehara, H. Yamashiro, T. Yoshioka, M. Wing, K. Kotera, M. Nishiyama, T. Sakuma, T. Takeshita, S. Tozuka, T. Tubokawa, S. Uozumi, E. Calvo Alamillo, M. C. Fouz, J. Marin, J. Navarrete, J. Puerta Pelayo, A. Verdugo, M. Chadeeva, M. Danilov, A. Drutskoy, E. Popova, V. Rusinov, E. Tarkovsky, L. Emberger, M. Gabriel, C. Graf, Y. Israeli, N. Van Der Kolk, F. Simon, M. Szalay, H. Windel, S. Bilokin, J. Bonis, R. Pöschl, A. Irles, A. Thiebault, F. Richard, D. Zerwas, M. Anduze, V. Balagura, E. Becheva, V. Boudry, J. C. Brient, R. Cornat, E. Edy, M. Frotin, F. Gastaldi, B. Li, F. Magniette, J. Nanni, M. Rubio-Roy, K. Shpak, T. H. Tran, H. Videau, D. Yu, J. Cvach, M. Janata, M. Kovalcuk

    Journal of Instrumentation   13 ( 12 )   2018.12

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    This paper presents results obtained with the combined CALICE Scintillator Electromagnetic Calorimeter, Analogue Hadronic Calorimeter and Tail Catcher & Muon Tracker, three high granularity scintillator-silicon photomultiplier calorimeter prototypes. The response of the system to pions with momenta between 4 GeV/c and 32 GeV/c is analysed, including the average energy response, resolution, and longitudinal shower profiles. Two techniques are applied to reconstruct the initial particle energy from the measured energy depositions; a standard energy reconstruction which is linear in the measured depositions and a software compensation technique based on reweighting individually measured depositions according to their hit energy. The results are compared to predictions of the GEANT 4 physics lists QGSP-BERT-HP and FTFP-BERT-HP.

    DOI： 10.1088/1748-0221/13/12/P12022

  • High precision measurement of muonium hyperfine structure Reviewed

    T. Tanaka, M. Abe, M. Aoki, M. Fukao, H. Iinuma, Y. Ikedo, K. Ishida, T. U. Ito, M. Iwasaki, R. Kadono, O. Kamigaito, S. Kanda, D. Kawall, N. Kawamura, A. Koda, K. M. Kojima, M. K. Kubo, Y. Matsuda, T. Mibe, Y. Miyake, K. Nagamine, S. Nishimura, T. Ogitsu, R. Okubo, N. Saito, K. Sasaki, Y. Sato, S. Seo, K. Shimomura, P. Strasser, M. Sugano, K. S. Tanaka, D. Tomono, H. A. Torii, E. Torikai, A. Toyoda, K. Ueno, Y. Ueno, D. Yagi, H. Yasuda, H. Yamaguchi, A. Yamamoto, T. Yamanaka, H. Yamazaki, M. Yoshida, T. Yoshioka

    Journal of Physics: Conference Series   1138 ( 1 )   2018.12

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    MuSEUM (Muonium Spectroscopy Experiment Using Microwave) collaboration aims to measure the muonium hyperfine structure (MuHFS,vhfs) with a few ppb (parts per billion). MuHFS spectroscopy is a stringent test of the bound-state QED. From this measurement, the muon-proton magnetic moment ratio (μ /μ ) and the muon-electron mass ratio (m /m ) can also be determined by applying a high magnetic field. In the previous MuHFS measurement carried out at Los Alamos Meson Physics Facility (LAMPF), the main uncertainty was caused by the lack of the statistics. MuSEUM collaboration uses the high intense pulsed muon beam at Japan Proton Accelerator Research Complex (J-PARC) to improve the statistical uncertainty. We are also developing our own experimental setups for the improvement of the systematic uncertainties. From June 2016, MuSEUM collaboration have carried out the MuHFS measurement in an extremely low magnetic field within 100 nT and now we are preparing for the measurement in a 1.7 T high magnetic field. μ P μ e

    DOI： 10.1088/1742-6596/1138/1/012008

  • A Search for Possible Deviations from Newtonian Gravity at the nm Length Scale Using Neutron-Noble Gas Scattering Reviewed

    Noriko Oi, Hirohiko M. Shimizu, Katsuya Hirota, Masaaki Kitaguchi, Christopher C. Haddock, William M. Snow, Tamaki Yoshioka, Kenji Mishima, Takashi Ino, Tatsushi Shima

    JPS Conference Proceedings   2018.11

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  • Performance of Front-end ASIC and its evaluation with Silicon Strip Sensor for J-PARC Muon g-2/EDM Experiment Reviewed

    Y. Sato, H. Ikeda, M. Ikeno, T. Ito, K. Kawagoe, T. Kishishita, T. Kohriki, T. Kume, M. Matama, T. Mibe, T. Murakami, T. Nagasawa, S. Nishimura, N. Saito, O. Sasaki, S. Shirabe, M. Shoji, T. Suehara, M. Tanaka, J. Tojo, T. Uchida, K. Ueno, H. Yasuda, T. Yoshioka

    2017 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2017 - Conference Proceedings   2018.11

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    The muon anomalous magnetic moment (g -2)-{mu} and electric dipole moment (EDM) are sensitive to new physics beyond the Standard Model. We aim to measure ( g -2 ) -{mu} with a precision of 0.1 parts per million and search for EDM with a sensitivity of 10 e. cm at J-PARC. In this experiment, we use a silicon strip detector with high granularity and fast response to detect positrons from muon decay. The readout ASIC is required to tolerate a high hit rate of 1.4 MHz per strip, to be stable to the change of hit rate by a factor of 1 /150, and to have deep memory for the period of sim 40 mu mathrm{s} with 5 ns resolution. The prototype readout ASIC SliT128A has been fabricated using the Silterra 0.18- mu mathrm{m} CMOS process. We also connected the SliT128A with a silicon strip sensor and tested it with a muon beam at J-PARC. In this paper, we report the performance of the prototype ASIC itself and the prototype detector module. -21

    DOI： 10.1109/NSSMIC.2017.8532754

  • Measurement of (n,gamma) Reaction of 117Sn for T-Violation Search by Using Compound Nucleus Reviewed

    J. Koga, S. Takada, T. Yoshioka, H.M. Shimizu, K. Hirota, T. Okudaira, N. Oi, I. Ito, T. Yamamoto, S. Endo, C.C. Haddock, M. Kitaguchi, A. Kimura, K. Sakai, T. Ino, K. Asahi, T. Momose, T. Iwata, M. Hino, T. Shima, Y. Yamagata

    JPS Conference Proceedings   2018.11

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  • Fundamental Physics Using High-Performance Optics Reviewed

    Masaaki Kitaguchi, Koichiro Asahi, Shunsuke Endo, Christopher C. Haddock, Masahiro Hino, Katsuya Hirota, Takashi Ino, Ikuya Ito, Takahiro Iwata, Jun Koga, Yoshiyuki Miyachi, Takamasa Momose, Noriko Oi, Takuya Okudaira, Kenji Sakai, Tatsushi Shima, Hirohiko M. Shimizu, Shusuke Takada, Yutaka Yamagata, Tomoki Yamamoto, Tamaki Yoshioka

    JPS Conference Proceedings   2018.11

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  • Search for deviations from the inverse square law of gravity at nm range using a pulsed neutron beam Reviewed

    Christopher C. Haddock, Noriko Oi, Katsuya Hirota, Takashi Ino, Masaaki Kitaguchi, Satoru Matsumoto, Kenji Mishima, Tatsushi Shima, Hirohiko M. Shimizu, W. Michael Snow, Tamaki Yoshioka

    Physical Review D   97 ( 6 )   2018.3

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    We describe an experimental search for deviations from the inverse-square law of gravity at the nanometer length scale using neutron scattering from noble gases on a pulsed slow neutron beam line. By measuring the neutron momentum transfer (q) dependence of the differential cross section for xenon and helium and comparing to their well-known analytical forms, we place an upper bound on the strength of a new interaction as a function of interaction length λ which improves upon previous results in the region λ<0.1 nm, and remains competitive in the larger-λ region. A pseudoexperimental simulation is developed for this experiment and its role in the data analysis is described. We conclude with plans for improving sensitivity in the larger-λ region.

    DOI： 10.1103/PhysRevD.97.062002

  • Measurement of Angular Distributions in 139La(n,????) Reaction for T Violation Search Reviewed

    T. Okudaira, H. M. Shimizu, M. Kitaguchi, K. Hirota, C. C. Haddock, N. Oi, I. Ito, T. Yamamoto, S. Endo, S. Takada, J. Koga, T. Yoshioka, T. Ino, K. Asahi, T. Momose, T. Iwata, K. Sakai, T. Oku, A. Kimura, M. Hino, T. Shima, Y. Yamagata

    JPS Conference Proceedings, Proceedings of the International Conference on Neutron Optics (NOP2017)   22 ( 10.7566 )   011041   2018.1

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    Measurement of Angular Distributions in 139La(n,????) Reaction for T Violation Search

  • Angular Distribution of $gamma$-rays from Neutron-Induced Compound States of $^{140}$La Reviewed

    T.Okudaira, T.Yoshioka

    Physical Review C   2017.1

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    Angular Distribution of $gamma$-rays from Neutron-Induced Compound States of $^{140}$La

  • J-PARC/BL05における中性子寿命測定実験：高統計測定に向けたビームラインアップグレード

    北原, 龍之介, 長倉, 直樹, 角野, 浩史, 吉岡, 瑞樹, 音野, 瑛俊, 富田, 龍彦, 角, 直幸, 森下, 彩, 古賀, 淳, 生出, 秀行, 嶋, 達志, 岩下, 芳久, 三島, 賢二, 猪野, 隆, 竹谷, 薫, 関, 義親, 関場, 大一郎, 清水, 裕彦, 広田, 克也, 横橋, 麻美, 北口, 雅暁, 山下, 了, 山田, 崇人, 家城, 斉

    日本物理学会講演概要集   72 ( 0 )   76 - 76   2017.1

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    Neutron lifetime measurement at J-PARC/BL05: Beamline upgrade for high statistical measurements

    DOI： 10.11316/jpsgaiyo.72.2.0_76

  • Search for the rare decay K+ →μ+ν ν ν SEARCH for the RARE DECAY ... A. V. ARTAMONOV et al. Reviewed

    A. V. Artamonov, B. Bassalleck, B. Bhuyan, E. W. Blackmore, D. A. Bryman, S. Chen, I. H. Chiang, I. A. Christidi, P. S. Cooper, M. V. Diwan, J. S. Frank, T. Fujiwara, J. Hu, J. Ives, A. O. Izmaylov, D. E. Jaffe, S. Kabe, S. H. Kettell, M. M. Khabibullin, A. N. Khotjantsev, P. Kitching, M. Kobayashi, T. K. Komatsubara, A. Konaka, Yu G. Kudenko, L. G. Landsberg, B. Lewis, K. K. Li, L. S. Littenberg, J. A. MacDonald, J. Mildenberger, O. V. Mineev, M. Miyajima, K. Mizouchi, N. Muramatsu, T. Nakano, M. Nomachi, T. Nomura, T. Numao, V. F. Obraztsov, K. Omata, D. I. Patalakha, R. Poutissou, G. Redlinger, T. Sato, T. Sekiguchi, A. T. Shaikhiev, T. Shinkawa, R. C. Strand, S. Sugimoto, Y. Tamagawa, R. Tschirhart, T. Tsunemi, D. V. Vavilov, B. Viren, Zhe Wang, Hanyu Wei, N. V. Yershov, Y. Yoshimura, T. Yoshioka

    Physical Review D   94 ( 3 )   2016.8

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    Evidence of the K+→μ+ννν decay was searched for using E949 (Brookhaven National Laboratory, USA) experimental data with an exposure of 1.70×1012 stopped kaons. The data sample is dominated by the background process K+→μ+νμγ. An upper limit on the decay rate Γ(K+→μ+ννν)<2.4×10-6Γ(K+→all) at 90&#37; confidence level was set assuming the standard model muon spectrum. The data are presented in such a way as to allow calculation of rates for any assumed μ+ spectrum.

    DOI： 10.1103/PhysRevD.94.032012

  • Hadron shower decomposition in the highly granular CALICE analogue hadron calorimeter Reviewed

    G. Eigen, T. Price, N. K. Watson, J. S. Marshall, M. A. Thomson, D. R. Ward, D. Benchekroun, A. Hoummada, Y. Khoulaki, J. Apostolakis, A. Dotti, G. Folger, V. Ivantchenko, A. Ribon, V. Uzhinskiy, J. Y. Hostachy, L. Morin, E. Brianne, A. Ebrahimi, K. Gadow, P. Göttlicher, C. Günter, O. Hartbrich, B. Hermberg, A. Irles, F. Krivan, K. Krüger, J. Kvasnicka, S. Lu, B. Lutz, V. Morgunov, C. Neubüser, A. Provenza, M. Reinecke, F. Sefkow, S. Schuwalow, H. L. Tran, E. Garutti, S. Laurien, M. Matysek, M. Ramilli, S. Schröder, K. Briggl, P. Eckert, Y. Munwes, H. Ch Schultz-Coulon, W. Shen, R. Stamen, B. Bilki, E. Norbeck, D. Northacker, Y. Onel, B. Van Doren, G. W. Wilson, K. Kawagoe, H. Hirai, Y. Sudo, T. Suehara, H. Sumida, S. Takada, T. Tomita, T. Yoshioka, M. Wing, A. Bonnevaux, C. Combaret, L. Caponetto, G. Grenier, R. Han, J. C. Ianigro, R. Kieffer, I. Laktineh, N. Lumb, H. Mathez, L. Mirabito, A. Steen, J. Berenguer Antequera, E. Calvo Alamillo, M. C. Fouz, J. Marin, J. Puerta-Pelayo, A. Verdugo, B. Bobchenko, O. Markin, E. Novikov, V. Rusinov, E. Tarkovsky, N. Kirikova, V. Kozlov, P. Smirnov, Y. Soloviev, D. Besson, P. Buzhan, M. Chadeeva, M. Danilov, A. Drutskoy, A. Ilyin, D. Mironov, R. Mizuk, E. Popova, M. Gabriel

    Journal of Instrumentation   11 ( 6 )   2016.6

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    The spatial development of hadronic showers in the CALICE scintillator-steel analogue hadron calorimeter is studied using test beam data collected at CERN and FNAL for single positive pions and protons with initial momenta in the range of 10-80 GeV/c. Both longitudinal and radial development of hadron showers are parametrised with two-component functions. The parametrisation is fit to test beam data and simulations using the QGSP-BERT and FTFP-BERT physics lists from GEANT4 version 9.6. The parameters extracted from data and simulated samples are compared for the two types of hadrons. The response to pions and the ratio of the non-electromagnetic to the electromagnetic calorimeter response, h/e, are estimated using the extrapolation and decomposition of the longitudinal profiles.

    DOI： 10.1088/1748-0221/11/06/P06013

  • Resistive Plate Chamber digitization in a hadronic shower environment Reviewed

    Z. Deng, Y. Li, Y. Wang, Q. Yue, Z. Yang, D. Boumediene, C. Carloganu, V. Français, G. Cho, D. W. Kim, S. C. Lee, W. Park, S. Vallecorsa, J. Apostolakis, G. Folger, C. Grefe, V. Ivantchenko, A. Ribon, V. Uzhinskiy, S. Cauwenbergh, M. Tytgat, A. Pingault, N. Zaganidis, E. Brianne, A. Ebrahimi, K. Gadow, P. Göttlicher, C. Günter, O. Hartbrich, B. Hermberg, A. Irles, F. Krivan, K. Krüger, J. Kvasnicka, S. Lu, B. Lutz, V. Morgunov, C. Neubüser, A. Provenza, M. Reinecke, F. Sefkow, S. Schuwalow, H. L. Tran, E. Garutti, S. Laurien, M. Matysek, M. Ramilli, S. Schroeder, B. Bilki, E. Norbeck, D. Northacker, Y. Onel, S. Chang, A. Khan, D. H. Kim, D. J. Kong, Y. D. Oh, K. Kawagoe, H. Hirai, Y. Sudo, T. Suehara, H. Sumida, T. Yoshioka, E. Cortina Gil, S. Mannai, V. Buridon, C. Combaret, L. Caponetto, R. Eté, G. Garillot, G. Grenier, R. Han, J. C. Ianigro, R. Kieffer, I. Laktineh, N. Lumb, H. Mathez, L. Mirabito, A. Petrukhin, A. Steen, J. Berenguer Antequera, E. Calvo Alamillo, M. C. Fouz, J. Marin, J. Puerta-Pelayo, A. Verdugo, M. Chadeeva, M. Danilov, F. Corriveau, M. Gabriel, P. Goecke, C. Kiesling, N. Van Der Kolk, F. Simon, M. Szalay, S. Bilokin, J. Bonis, P. Cornebise, F. Richard, R. Pöschl

    Journal of Instrumentation   11 ( 6 )   2016.6

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    The CALICE Semi-Digital Hadronic Calorimeter technological prototype is a sampling calorimeter using Glass Resistive Plate Chamber detectors with a three-threshold readout as the active medium. This technology is one of the two options proposed for the hadronic calorimeter of the International Large Detector for the International Linear Collider. The prototype was exposed to beams of muons, electrons and pions of different energies at the CERN Super Proton Synchrotron. To be able to study the performance of such a calorimeter in future experiments it is important to ensure reliable simulation of its response. This paper presents the SDHCAL prototype simulation performed with GEANT4 and the digitization procedure achieved with an algorithm called SimDigital. A detailed description of this algorithm is given and the methods to determinate its parameters using muon tracks and electromagnetic showers are explained. The comparison with hadronic shower data shows a good agreement up to 50 GeV. Discrepancies are observed at higher energies. The reasons for these differences are investigated.

    DOI： 10.1088/1748-0221/11/06/P06014

  • DHCAL with minimal absorber: Measurements with positrons Reviewed

    B. Freund, C. Neubüser, J. Repond, J. Schlereth, L. Xia, A. Dotti, C. Grefe, V. Ivantchenko, J. Berenguer Antequera, E. Calvo Alamillo, M. C. Fouz, J. Marin, J. Puerta-Pelayo, A. Verdugo, E. Brianne, A. Ebrahimi, K. Gadow, P. Göttlicher, C. Günter, O. Hartbrich, B. Hermberg, A. Irles, F. Krivan, K. Krüger, J. Kvasnicka, S. Lu, B. Lutz, V. Morgunov, A. Provenza, M. Reinecke, F. Sefkow, S. Schuwalow, H. L. Tran, E. Garutti, S. Laurien, M. Matysek, M. Ramilli, S. Schroeder, B. Bilki, E. Norbeck, D. Northacker, Y. Onel, J. Cvach, P. Gallus, M. Havranek, M. Janata, M. Kovalcuk, J. Kvasnicka, D. Lednicky, M. Marcisovsky, I. Polak, J. Popule, L. Tomasek, M. Tomasek, P. Sicho, J. Smolik, V. Vrba, J. Zalesak, B. Van Doren, G. W. Wilson, K. Kawagoe, H. Hirai, Y. Sudo, T. Suehara, H. Sumida, S. Takada, T. Tomita, T. Yoshioka, S. Bilokin, J. Bonis, P. Cornebise, R. Pöschl, F. Richard, A. Thiebault, D. Zerwas, J. Y. Hostachy, L. Morin, D. Besson, M. Chadeeva, M. Danilov, O. Markin, E. Popova, M. Gabriel, P. Goecke, C. Kiesling, N. Van Der Kolk, F. Simon, M. Szalay, F. Corriveau, G. C. Blazey, A. Dyshkant, K. Francis, V. Zutshi, K. Kotera, H. Ono, T. Takeshita, S. Ieki, Y. Kamiya, W. Ootani, N. Shibata

    Journal of Instrumentation   11 ( 5 )   2016.5

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    In special tests, the active layers of the CALICE Digital Hadron Calorimeter prototype, the DHCAL, were exposed to low energy particle beams, without being interleaved by absorber plates. The thickness of each layer corresponded approximately to 0.29 radiation lengths or 0.034 nuclear interaction lengths, defined mostly by the copper and steel skins of the detector cassettes. This paper reports on measurements performed with this device in the Fermilab test beam with positrons in the energy range of 1 to 10 GeV. The measurements are compared to simulations based on GEANT4 and a standalone program to emulate the detailed response of the active elements.

    DOI： 10.1088/1748-0221/11/05/P05008

  • Discrete symmetry tests in neutron-induced compound states

    H. M. Shimizu, W. M. Snow, V. P. Gudkov, J. D. Bowman, J. Curole, B. M. Goodson, H. Harada, P. Hautle, M. Hino, K. Hirota, G. Ichikawa, T. Ino, S. Ishimoto, T. Iwata, A. Kimura, M. Kitaguchi, Y. Kiyanagi, J. Koga, K. Mishima, Y. Miyachi, T. Momose, T. Morishima, K. Nagamoto, A. Okada, T. Okudaira, S. Penttila, B. Plaster, K. Sakai, D. Schaper, S. Takada, K. Taketani, X. Tong, A. S. Tremsin, Y. Yamagata, T. Yamamoto, N. Yamanaka, M. Yokohashi, T. Yoshioka

    Proceedings of Science   2016-September   2016.1

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    A possibility of new type experimental searches for new physics beyond the standard model is being introduced in the symmetry tests in neutron-induced compound states according to the successful operation of intense pulsed neutron sources. The basis of experiment design is discussed.

    DOI： 10.22323/1.281.0187

  • Search for the rare decay K+ →μ+ν ν ν SEARCH for the RARE DECAY ... A. V. ARTAMONOV et al. Reviewed

    A. V. Artamonov, B. Bassalleck, B. Bhuyan, E. W. Blackmore, D. A. Bryman, S. Chen, I. H. Chiang, I. A. Christidi, P. S. Cooper, M. V. Diwan, J. S. Frank, T. Fujiwara, J. Hu, J. Ives, A. O. Izmaylov, D. E. Jaffe, S. Kabe, S. H. Kettell, M. M. Khabibullin, A. N. Khotjantsev, P. Kitching, M. Kobayashi, T. K. Komatsubara, A. Konaka, Yu G. Kudenko, L. G. Landsberg, B. Lewis, K. K. Li, L. S. Littenberg, J. A. MacDonald, J. Mildenberger, O. V. Mineev, M. Miyajima, K. Mizouchi, N. Muramatsu, T. Nakano, M. Nomachi, T. Nomura, T. Numao, V. F. Obraztsov, K. Omata, D. I. Patalakha, R. Poutissou, G. Redlinger, T. Sato, T. Sekiguchi, A. T. Shaikhiev, T. Shinkawa, R. C. Strand, Tamaki Yoshioka

    Physical Review D   94 ( 3 )   2016.1

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    Search for the rare decay K+ →μ+ν ν ν SEARCH for the RARE DECAY ... A. V. ARTAMONOV et al.

    DOI： 10.1103/PhysRevD.94.032012

  • Search for the decay K+-->μ+ννν Reviewed

    A.V.Artamanov, T.Yoshioka

    Physical Review D   2016.1

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    Search for the decay K+-->μ+ννν

  • Precise neutron lifetime experiment using pulsed neutron beams at J-PARC Reviewed

    Naoki Nagakura, Katsuya Hirota, Sei Ieki, Takashi Ino, Yoshihisa Iwashita, Masaaki Kitaguchi, Ryunosuke Kitahara, Kenji Mishima, Aya Morishita, Hideyuki Oide, Hidetoshi Otono, Risa Sakakibara, Yoshichika Seki, Tatsushi Shima, Hirohiko M. Shimizu, Tomoaki Sugino, Naoyuki Sumi, Hirochika Sumino, Kaoru Taketani, Genki Tanaka, Tatsuhiko Tomita, Takahito Yamada, Satoru Yamashita, Mami Yokohashi, Tamaki Yoshioka

    Proceedings of Science   2016-September   2016.1

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    Precise neutron lifetime experiment using pulsed neutron beams at J-PARC

  • Performance study of SKIROC2 and SKIROC2A with BGA testboard Reviewed

    I. Sekiya, H. Hirai, Taikan Suehara, Tamaki Yoshioka, Kiyotomo Kawagoe

    2016.1

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    Performance study of SKIROC2 and SKIROC2A with BGA testboard

  • Performance evaluation of PSD for silicon ECAL

    Hiroaki Yamashiro, Kiyotomo Kawagoe, Taikan Suehara, Tamaki Yoshioka, Yuji Sudo, Hiroki Sumida

    2016 International Workshop on Future Linear Colliders, LCWS 2016 Proceedings of the International Workshop on Future Linear Colliders, LCWS 2016   2016.1

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    Performance evaluation of PSD for silicon ECAL

  • Shower development of particles with momenta from 15 GeV to 150 GeV in the CALICE scintillator-tungsten hadronic calorimeter Reviewed

    M. Chefdeville, Y. Karyotakis, J. Repond, J. Schlereth, L. Xia, G. Eigen, J. S. Marshall, M. A. Thomson, D. R. Ward, N. Alipour Tehrani, J. Apostolakis, D. Dannheim, K. Elsener, G. Folger, C. Grefe, V. Ivantchenko, M. Killenberg, W. Klempt, E. Van Der Kraaij, L. Linssen, A. I. Lucaci-Timoce, A. Münnich, S. Poss, A. Ribon, P. Roloff, A. Sailer, D. Schlatter, E. Sicking, J. Strube, V. Uzhinskiy, S. Chang, A. Khan, D. H. Kim, D. J. Kong, Y. D. Oh, G. C. Blazey, A. Dyshkant, K. Francis, V. Zutshi, J. Giraud, D. Grondin, J. Y. Hostachy, E. Brianne, U. Cornett, D. David, G. Falley, K. Gadow, P. Göttlicher, C. Günter, O. Hartbrich, B. Hermberg, A. Irles, S. Karstensen, F. Krivan, K. Krüger, J. Kvasnicka, S. Lu, B. Lutz, S. Morozov, V. Morgunov, C. Neubüser, A. Provenza, M. Reinecke, F. Sefkow, P. Smirnov, M. Terwort, H. L. Tran, A. Vargas-Trevino, E. Garutti, S. Laurien, M. Matysek, M. Ramilli, S. Schröder, K. Briggl, P. Eckert, T. Harion, Y. Munwes, H. Ch Schultz-Coulon, W. Shen, R. Stamen, B. Bilki, Y. Onel, K. Kawagoe, H. Hirai, Y. Sudo, T. Suehara, H. Sumida, S. Takada, T. Tomita, T. Yoshioka, M. Wing, E. Calvo Alamillo, M. C. Fouz, J. Marin, J. Puerta-Pelayo, A. Verdugo, B. Bobchenko, M. Chadeeva, M. Danilov, O. Markin

    Journal of Instrumentation   10 ( 12 )   2015.12

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    We present a study of showers initiated by electrons, pions, kaons, and protons with momenta from 15 GeV to 150 GeV in the highly granular CALICE scintillator-tungsten analogue hadronic calorimeter. The data were recorded at the CERN Super Proton Synchrotron in 2011. The analysis includes measurements of the calorimeter response to each particle type as well as measurements of the energy resolution and studies of the longitudinal and radial shower development for selected particles. The results are compared to Geant4 simulations (version 9.6.p02). In the study of the energy resolution we include previously published data with beam momenta from 1 GeV to 10 GeV recorded at the CERN Proton Synchrotron in 2010.

    DOI： 10.1088/1748-0221/10/12/P12006

  • Development of time projection chamber for precise neutron lifetime measurement using pulsed cold neutron beams Reviewed

    Y. Arimoto, N. Higashi, Y. Igarashi, Y. Iwashita, T. Ino, R. Katayama, M. Kitaguchi, R. Kitahara, H. Matsumura, K. Mishima, N. Nagakura, H. Oide, H. Otono, R. Sakakibara, T. Shima, H. M. Shimizu, T. Sugino, N. Sumi, H. Sumino, K. Taketani, G. Tanaka, M. Tanaka, K. Tauchi, A. Toyoda, T. Tomita, T. Yamada, S. Yamashita, H. Yokoyama, T. Yoshioka

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   799   187 - 196   2015.8

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    A new time projection chamber (TPC) was developed for neutron lifetime measurement using a pulsed cold neutron spallation source at the Japan Proton Accelerator Research Complex (J-PARC). Managing considerable background events from natural sources and the beam radioactivity is a challenging aspect of this measurement. To overcome this problem, the developed TPC has unprecedented features such as the use of polyether-ether-ketone plates in the support structure and internal surfaces covered with 6Li-enriched tiles to absorb outlier neutrons. In this paper, the design and performance of the new TPC are reported in detail.

    DOI： 10.1016/j.nima.2015.08.006

  • Testing hadronic interaction models using a highly granular silicon-tungsten calorimeter Reviewed

    B. Bilki, J. Repond, J. Schlereth, L. Xia, Z. Deng, Y. Li, Y. Wang, Q. Yue, Z. Yang, G. Eigen, Y. Mikami, T. Price, N. K. Watson, M. A. Thomson, D. R. Ward, D. Benchekroun, A. Hoummada, Y. Khoulaki, C. Cârloganu, S. Chang, A. Khan, D. H. Kim, D. J. Kong, Y. D. Oh, G. C. Blazey, A. Dyshkant, K. Francis, J. G.R. Lima, P. Salcido, V. Zutshi, V. Boisvert, B. Green, A. Misiejuk, F. Salvatore, K. Kawagoe, Y. Miyazaki, Y. Sudo, T. Suehara, T. Tomita, H. Ueno, T. Yoshioka, J. Apostolakis, G. Folger, V. Ivantchenko, A. Ribon, V. Uzhinskiy, S. Cauwenbergh, M. Tytgat, N. Zaganidis, J. Y. Hostachy, L. Morin, K. Gadow, P. Göttlicher, C. Günter, K. Krüger, B. Lutz, M. Reinecke, F. Sefkow, N. Feege, E. Garutti, S. Laurien, S. Lu, I. Marchesini, M. Matysek, M. Ramilli, A. Kaplan, E. Norbeck, D. Northacker, Y. Onel, E. J. Kim, B. Van Doren, G. W. Wilson, M. Wing, B. Bobchenko, M. Chadeeva, R. Chistov, M. Danilov, A. Drutskoy, A. Epifantsev, O. Markin, R. Mizuk, E. Novikov, V. Popov, V. Rusinov, E. Tarkovsky, D. Besson, E. Popova, M. Gabriel, C. Kiesling, F. Simon, C. Soldner, M. Szalay, M. Tesar, L. Weuste, M. S. Amjad, J. Bonis, S. Callier, S. Conforti Di Lorenzo, P. Cornebise, Ph Doublet

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   794   240 - 254   2015.7

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    Abstract A detailed study of hadronic interactions is presented using data recorded with the highly granular CALICE silicon-tungsten electromagnetic calorimeter. Approximately 350,000 selected events at energies between 2 and 10 GeV have been studied. The predictions of several physics models available within the GEANT4 simulation tool kit are compared to this data. A reasonable overall description of the data is observed; the Monte Carlo predictions are within 20&#37; of the data, and for many observables much closer. The largest quantitative discrepancies are found in the longitudinal and transverse distributions of reconstructed energy. π-

    DOI： 10.1016/j.nima.2015.05.009

  • Beam test performance of the SKIROC2 ASIC Reviewed

    M. S. Amjad, M. Anduze, J. -E. Augustin, J. Bonis, V. Boudry, C. Bourgeois, J. -C. Brient, S. Callier, M. Cerutti, S. Chen, R. Cornat, P. Cornebise, D. Cuisy, J. David, C. de la Taille, F. Dulucq, T. Frisson, M. Frotin, F. Gastaldi, P. Ghislain, J. Giraud, A. Gonnin, D. Grondin, E. Guliyev, J. -Y. Hostachy, D. Jeans, Y. Kamiya, K. Kawagoe, C. Kozakai, D. Lacour, L. Lavergne, S. H. Lee, F. Magniette, H. Ono, R. Poeschl, J. Rouene, N. Seguin-Moreau, H. S. Song, Y. Sudo, A. Thiebault, H. Tran, H. Ueno, N. van der Kolk, T. Yoshioka

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   778   78 - 84   2015.4

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    Beam tests of the first layers of CALICE silicon tungsten ECAL technological prototype were performed in April and July 2012 using 1-6 GeV electron beam at DESY. This paper presents an analysis of the SKIROC2 readout ASIC performance under test beam conditions. (C) 2014 Elsevier B.V. All rights reserved.

    DOI： 10.1016/j.nima.2014.12.011

  • Pion and proton showers in the CALICE scintillator-steel analogue hadron calorimeter Reviewed

    B. Bilki, J. Repond, L. Xia, G. Eigen, M. A. Thomson, D. R. Ward, D. Benchekroun, A. Hoummada, Y. Khoulaki, S. Chang, A. Khan, D. H. Kim, D. J. Kong, Y. D. Oh, G. C. Blazey, A. Dyshkant, K. Francis, J. G.R. Lima, R. Salcido, V. Zutshi, F. Salvatore, K. Kawagoe, Y. Miyazaki, Y. Sudo, T. Suehara, T. Tomita, H. Ueno, T. Yoshioka, J. Apostolakis, D. Dannheim, G. Folger, V. Ivantchenko, W. Klempt, A. I. Lucaci-Timoce, A. Ribon, D. Schlatter, E. Sicking, V. Uzhinskiy, J. Giraud, D. Grondin, J. Y. Hostachy, L. Morin, E. Brianne, U. Cornett, D. David, A. Ebrahimi, G. Falley, K. Gadow, P. Göttlicher, C. Günter, O. Hartbrich, B. Hermberg, S. Karstensen, F. Krivan, K. Krüger, S. Lu, B. Lutz, S. Morozov, V. Morgunov, C. Neubüser, M. Reinecke, F. Sefkow, P. Smirnov, H. L. Tran, P. Buhmann, E. Garutti, S. Laurien, M. Matysek, M. Ramilli, K. Briggl, P. Eckert, T. Harion, Y. Munwes, H. Ch Schultz-Coulon, W. Shen, R. Stamen, E. Norbeck, D. Northacker, Y. Onel, B. van Doren, G. W. Wilson, M. Wing, C. Combaret, L. Caponetto, R. Eté, G. Grenier, R. Han, J. C. Ianigro, R. Kieffer, I. Laktineh, N. Lumb, H. Mathez, L. Mirabito, A. Petrukhin, A. Steen, J. Berenguer Antequera, E. Calvo Alamillo, M. C. Fouz, J. Marin, J. Puerta-Pelayo

    Journal of Instrumentation   10 ( 4 )   2015.4

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    Showers produced by positive hadrons in the highly granular CALICE scintillator-steel analogue hadron calorimeter were studied. The experimental data were collected at CERN and FNAL for single particles with initial momenta from 10 to 80 GeV/c. The calorimeter response and resolution and spatial characteristics of shower development for proton- and pion-induced showers for test beam data and simulations using GEANT4 version 9.6 are compared.

    DOI： 10.1088/1748-0221/10/04/P04014

  • Performance test of a lead-glass counter for the J-PARC E36 experiment Reviewed

    Y. Miyazaki, S. Shimizu, S. Bianchin, C. Djalali, D. Gill, J. Jiang, M. Hasinoff, K. Horie, Y. Igarashi, J. Imazato, A. Ivashkin, M. Kohl, R. Narikawa, R. Pywell, S. Strauch, M. Tabata, A. Toyoda, H. Yamazaki, T. Yoshioka

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   779   13 - 17   2015.4

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    The J-PARC E36 experiment will search for a violation of lepton universality by a precise measurement of the ratio of the kaon decay widths R-K = Gamma(K+ -> e(+)nu)/Gamma(K+ -> mu(+)nu). Charged particles will be identified by the combination of three independent systems' a lead glass Cherenkov counter, an aerogel Cherenkov counter, and a time measurement. The performance of the load glass Cherenkov counter was investigated with e(+), mu(+), and pi(+) beams in the relevant momentum region from the K+ decays. By using a polyethylene degrader to slow down the beam momentum in front of the lead-glass block, we succeeded in reducing the muon mis-identification probability down to 5&#37; while maintaining a high e(+) detection efficiency of 98&#37;. (C) 2015 Elsevier By. All rights reserved.

    DOI： 10.1016/j.nima.2015.01.044

  • Beam test performance of the SKIROC2 ASIC Reviewed

    M. S. Amjad, M. Anduze, J. E. Augustin, J. Bonis, V. Boudry, C. Bourgeois, J. C. Brient, S. Callier, M. Cerutti, S. Chen, R. Cornat, P. Cornebise, D. Cuisy, J. David, C. De La Taille, F. Dulucq, T. Frisson, M. Frotin, F. Gastaldi, P. Ghislain, J. Giraud, A. Gonnin, D. Grondin, E. Guliyev, J. Y. Hostachy, D. Jeans, Y. Kamiya, K. Kawagoe, C. Kozakai, D. Lacour, L. Lavergne, S. H. Lee, F. Magniette, H. Ono, R. Poeschl, J. Rouëné, N. Seguin-Moreau, H. S. Song, Y. Sudo, A. Thiebault, H. Tran, H. Ueno, N. Van Der Kolk, T. Yoshioka

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   778   78 - 84   2015.4

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    Beam tests of the first layers of CALICE silicon tungsten ECAL technological prototype were performed in April and July 2012 using 1-6 GeV electron beam at DESY. This paper presents an analysis of the SKIROC2 readout ASIC performance under test beam conditions.

    DOI： 10.1016/j.nima.2014.12.011

  • Search for heavy neutrinos in K+ →μ+νH decays Reviewed

    A. V. Artamonov, B. Bassalleck, B. Bhuyan, E. W. Blackmore, D. A. Bryman, S. Chen, I. H. Chiang, I. A. Christidi, P. S. Cooper, M. V. Diwan, J. S. Frank, T. Fujiwara, J. Hu, J. Ives, A. O. Izmaylov, D. E. Jaffe, S. Kabe, S. H. Kettell, M. M. Khabibullin, A. N. Khotjantsev, P. Kitching, M. Kobayashi, T. K. Komatsubara, A. Konaka, Yu G. Kudenko, L. G. Landsberg, B. Lewis, K. K. Li, L. S. Littenberg, J. A. Macdonald, J. Mildenberger, O. V. Mineev, M. Miyajima, K. Mizouchi, N. Muramatsu, T. Nakano, M. Nomachi, T. Nomura, T. Numao, V. F. Obraztsov, K. Omata, D. I. Patalakha, R. Poutissou, G. Redlinger, T. Sato, T. Sekiguchi, A. T. Shaikhiev, T. Shinkawa, R. C. Strand, Tamaki Yoshioka

    Physical Review D - Particles, Fields, Gravitation and Cosmology   91 ( 5 )   2015.3

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    Search for heavy neutrinos in K+ →μ+νH decays
    Evidence of a heavy neutrino, νH, in the K+→μ+νH decays was sought using the E949 experimental data with an exposure of 1.70×1012 stopped kaons. With the major background from the radiative K+→μ+νμγ decay understood and suppressed, upper limits (90&#37; C.L.) on the neutrino mixing matrix element between the muon and heavy neutrinos, |UμH|2, were set at the level of 10-7 to 10-9 for the heavy neutrino mass region 175 to 300MeV/c2.

    DOI： 10.1103/PhysRevD.91.052001

  • Optimization of layer composition for ILD ECAL

    Hiroki Sumida, Masato Matama, Yuji Sudo, Taikan Suehara, Tamaki Yoshioka, Kiyotomo Kawagoe, Daniel Jeans, Tohru Takeshita, Katsushige Kotera

    2015 International Workshop on Future Linear Colliders, LCWS 2015 Proceedings of the International Workshop on Future Linear Colliders, LCWS 2015   2015.1

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    Optimization of layer composition for ILD ECAL

  • Performance of the first prototype of the CALICE scintillator strip electromagnetic calorimeter Reviewed

    K. Francis, J. Repond, J. Schlereth, J. Smith, L. Xia, E. Baldolemar, S. T. Park, M. Sosebee, A. P. White, J. Yu, G. Eigen, Y. Mikami, N. K. Watson, M. A. Thomson, D. R. Ward, D. Benchekroun, A. Hoummada, Y. Khoulaki, J. Apostolakis, A. Dotti, G. Folger, V. Ivantchenko, A. Ribon, V. Uzhinskiy, C. Cârloganu, P. Gay, S. Manen, L. Royer, M. Tytgat, N. Zaganidis, G. C. Blazey, A. Dyshkant, J. G.R. Lima, V. Zutshi, J. Y. Hostachy, L. Morin, U. Cornett, D. David, A. Ebrahimi, G. Falley, K. Gadow, P. Göttlicher, C. Günter, O. Hartbrich, B. Hermberg, S. Karstensen, F. Krivan, K. Krüger, B. Lutz, S. Morozov, V. Morgunov, C. Neubüser, M. Reinecke, F. Sefkow, P. Smirnov, M. Terwort, E. Garutti, S. Laurien, S. Lu, I. Marchesini, M. Matysek, M. Ramilli, K. Briggl, P. Eckert, T. Harion, H. Ch Schultz-Coulon, W. Shen, R. Stamen, B. Bilki, E. Norbeck, D. Northacker, Y. Onel, G. W. Wilson, K. Kawagoe, Y. Sudo, T. Yoshioka, P. D. Dauncey, M. Wing, F. Salvatore, E. Cortina Gil, S. Mannai, G. Baulieu, P. Calabria, L. Caponetto, C. Combaret, R. Della Negra, G. Grenier, R. Han, J. C. Ianigro, R. Kieffer, I. Laktineh, N. Lumb, H. Mathez, L. Mirabito, A. Petrukhin, A. Steen, W. Tromeur, M. Vander Donckt, Y. Zoccarato, E. Calvo Alamillo

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   763   278 - 289   2014.11

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    A first prototype of a scintillator strip-based electromagnetic calorimeter was built, consisting of 26 layers of tungsten absorber plates interleaved with planes of 45×10×3 mm plastic scintillator strips. Data were collected using a positron test beam at DESY with momenta between 1 and 6 GeV/c. The prototype's performance is presented in terms of the linearity and resolution of the energy measurement. These results represent an important milestone in the development of highly granular calorimeters using scintillator strip technology. A number of possible design improvements were identified, which should be implemented in a future detector of this type. This technology is being developed for a future linear collider experiment, aiming at the precise measurement of jet energies using particle flow techniques. © 2014 Elsevier B.V. 3

    DOI： 10.1016/j.nima.2014.06.039

  • The time structure of hadronic showers in highly granular calorimeters with tungsten and steel absorbers Reviewed

    C. Adloff, J. -J. Blaising, M. Chefdeville, C. Drancourt, R. Gaglione, N. Geffroy, Y. Karyotakis, I. Koletsou, J. Prast, G. Vouters, J. Repond, J. Schlereth, L. Xia, E. Baldolemar, J. Li, S. T. Park, M. Sosebee, A. P. White, J. Yu, G. Eigen, M. A. Thomson, D. R. Ward, D. Benchekroun, A. Hoummada, Y. Khoulaki, J. Apostolakis, S. Arfaoui, M. Benoit, D. Dannheim, K. Elsener, G. Folger, C. Grefe, V. Ivantchenko, M. Killenberg, W. Klempt, E. van der Kraaij, L. Linssen, A. -I. Lucaci-Timoce, A. Muennich, S. Poss, A. Ribon, P. Roloff, A. Sailer, D. Schlatter, E. Sicking, J. Strube, V. Uzhinskiy, C. Carloganu, P. Gay, S. Manen, L. Royer, U. Cornett, D. David, A. Ebrahimi, G. Falley, N. Feege, K. Gadow, P. Goettlicher, C. Guenter, O. Hartbrich, B. Hermberg, S. Karstensen, F. Krivan, K. Krueger, S. Lu, B. Lutz, S. Morozov, V. Morgunov, C. Neubueser, M. Reinecke, F. Sefkow, P. Smirnov, M. Terwort, A. Fagot, M. Tytgat, N. Zaganidis, J. -Y. Hostachy, L. Morin, E. Garutti, S. Laurien, I. Marchesini, M. Matysek, M. Ramilli, K. Briggl, P. Eckert, T. Harion, H. -Ch. Schultz-Coulon, W. Shen, R. Stamen, S. Chang, A. Khan, D. H. Kim, D. J. Kong, Y. D. Oh, B. Bilki, E. Norbeck, D. Northacker, Y. Onel, G. W. Wilson, K. Kawagoe, Y. Miyazaki, Y. Sudo, H. Ueno, T. Yoshioka, P. D. Dauncey, E. Cortina Gil, S. Mannai, G. Baulieu, P. Calabria, L. Caponetto, C. Combaret, R. Della Negra, R. Ete, G. Grenier, R. Han, J-C. Ianigro, R. Kieffer, I. Laktineh, N. Lumb, H. Mathez, L. Mirabito, A. Petrukhin, A. Steen, W. Tromeur, M. Vander Donckt, Y. Zoccarato, J. Berenguer Antequera, E. Calvo Alamillo, M. -C. Fouz, J. Puerta-Pelayo, F. Corriveau, B. Bobchenko, M. Chadeeva, M. Danilov, A. Epifantsev, O. Markin, R. Mizuk, E. Novikov, V. Rusinov, E. Tarkovsky, V. Kozlov, Y. Soloviev, D. Besson, P. Buzhan, A. Ilyin, V. Kantserov, V. Kaplin, E. Popova, V. Tikhomirov, M. Gabriel, C. Kiesling, K. Seidel, F. Simon, C. Soldner, M. Szalay, M. Tesar, L. Weuste, M. S. Amjad, J. Bonis, S. Conforti di Lorenzo, P. Cornebise, J. Fleury, T. Frisson, N. van der Kolk, F. Richard, R. Poeschl, J. Rouene, M. Anduze, V. Balagura, E. Becheva, V. Boudry, J-C. Brient, R. Cornat, M. Frotin, F. Gastaldi, E. Guliyev, Y. Haddad, F. Magniette, M. Ruan, T. H. Tran, H. Videau, S. Callier, F. Dulucq, G. Martin-Chassard, Ch. de la Taille, L. Raux, N. Seguin-Moreau, J. Zacek, J. Cvach, P. Gallus, M. Havranek, M. Janata, J. Kvasnicka, D. Lednicky, M. Marcisovsky, I. Polak, J. Popule, L. Tomasek, M. Tomasek, P. Ruzicka, P. Sicho, J. Smolik, V. Vrba, J. Zalesak, B. Belhorma, H. Ghazlane, K. Kotera, H. Ono, T. Takeshita, S. Uozumi, J. S. Chai, H. S. Song, S. H. Lee, M. Goetze, J. Sauer, S. Weber, C. Zeitnitz

    JOURNAL OF INSTRUMENTATION   9 ( 7 )   2014.7

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    The intrinsic time structure of hadronic showers influences the timing capability and the required integration time of hadronic calorimeters in particle physics experiments, and depends on the active medium and on the absorber of the calorimeter. With the CALICE T3B experiment, a setup of 15 small plastic scintillator tiles read out with Silicon Photomultipliers, the time structure of showers is measured on a statistical basis with high spatial and temporal resolution in sampling calorimeters with tungsten and steel absorbers. The results are compared to GEANT4 (version 9.4 patch 03) simulations with different hadronic physics models. These comparisons demonstrate the importance of using high precision treatment of low-energy neutrons for tungsten absorbers, while an overall good agreement between data and simulations for all considered models is observed for steel.

    DOI： 10.1088/1748-0221/9/07/P07022

  • Shower development of particles with momenta from 1 to 10 GeV in the CALICE Scintillator-Tungsten HCAL Reviewed

    C. Adloff, J. -J. Blaising, M. Chefdeville, C. Drancourt, R. Gaglione, N. Geffroy, Y. Karyotakis, I. Koletsou, J. Prast, G. Vouters, J. Repond, J. Schlereth, J. Smith, L. Xia, E. Baldolemar, J. Li, S. T. Park, M. Sosebee, A. P. White, J. Yu, G. Eigen, M. A. Thomson, D. R. Ward, D. Benchekroun, A. Hoummada, Y. Khoulaki, J. Apostolakis, D. Dannheim, A. Dotti, K. Elsener, G. Folger, C. Grefe, V. Ivantchenko, M. Killenberg, W. Klempt, E. van der Kraaij, C. B. Lam, L. Linssen, A. -I. Lucaci-Timoce, A. Muennich, S. Poss, A. Ribon, A. Sailer, D. Schlatter, J. Strube, V. Uzhinskiy, C. Carloganu, P. Gay, S. Manen, L. Royer, M. Tytgat, N. Zaganidis, G. C. Blazey, A. Dyshkant, J. G. R. Lima, V. Zutshi, J. -Y. Hostachy, L. Morin, U. Cornett, D. David, A. Ebrahimi, G. Falley, N. Feege, K. Gadow, P. Goettlicher, C. Guenter, O. Hartbrich, B. Hermberg, S. Karstensen, F. Krivan, K. Krueger, S. Lu, B. Lutz, S. Morozov, V. Morgunov, C. Neubueser, M. Reinecke, F. Sefkow, P. Smirnov, M. Terwort, E. Garutti, S. Laurien, I. Marchesini, M. Matysek, M. Ramilli, K. Briggl, P. Eckert, T. Harion, H. -Ch. Schultz-Coulon, W. Shen, R. Stamen, B. Bilki, E. Norbeck, D. Northacker, Y. Onel, G. W. Wilson, K. Kawagoe, Y. Sudo, T. Yoshioka, P. D. Dauncey, M. Wing, F. Salvatore, E. Cortina Gil, S. Mannai, G. Baulieu, P. Calabria, L. Caponetto, C. Combaret, R. Della Negra, G. Grenier, R. Han, J-C. Ianigro, R. Kieffer, I. Laktineh, N. Lumb, H. Mathez, L. Mirabito, A. Petrukhin, A. Steen, W. Tromeur, M. Vander Donckt, Y. Zoccarato, E. Calvo Alamillo, M. -C. Fouz, J. Puerta-Pelayo, F. Corriveau, B. Bobchenko, M. Chadeeva, M. Danilov, A. Epifantsev, O. Markin, R. Mizuk, E. Novikov, V. Popov, V. Rusinov, E. Tarkovsky, N. Kirikova, V. Kozlov, P. Smirnov, Y. Soloviev, D. Besson, P. Buzhan, A. Ilyin, V. Kantserov, V. Kaplin, A. Karakash, E. Popova, V. Tikhomirov, C. Kiesling, K. Seidel, F. Simon, C. Soldner, M. Szalay, M. Tesar, L. Weuste, M. S. Amjad, J. Bonis, S. Callier, S. Conforti di Lorenzo, P. Cornebise, Ph. Doublet, F. Dulucq, J. Fleury, T. Frisson, N. van der Kolk, H. Li, G. Martin-Chassard, F. Richard, Ch. de la Taille, R. Poeschl, L. Raux, J. Rouene, N. Seguin-Moreau, M. Anduze, V. Balagura, V. Boudry, J-C. Brient, R. Cornat, M. Frotin, F. Gastaldi, E. Guliyev, Y. Haddad, F. Magniette, G. Musat, M. Ruan, T. H. Tran, H. Videau, B. Bulanek, J. Zacek, J. Cvach, P. Gallus, M. Havranek, M. Janata, J. Kvasnicka, D. Lednicky, M. Marcisovsky, I. Polak, J. Popule, L. Tomasek, M. Tomasek, P. Ruzicka, P. Sicho, J. Smolik, V. Vrba, J. Zalesak, B. Belhorma, H. Ghazlane, K. Kotera, T. Takeshita, S. Uozumi, S. Chang, A. Khan, D. H. Kim, D. J. Kong, Y. D. Oh, M. Goetze, J. Sauer, S. Weber, C. Zeitnitz

    JOURNAL OF INSTRUMENTATION   9 ( 1 )   2014.1

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    Lepton colliders are considered as options to complement and to extend the physics programme at the Large Hadron Collider. The Compact Linear Collider (CLIC) is an e(+)e(-) collider under development aiming at centre-of-mass energies of up to 3 TeV. For experiments at CLIC, a hadron sampling calorimeter with tungsten absorber is proposed. Such a calorimeter provides sufficient depth to contain high-energy showers, while allowing a compact size for the surrounding solenoid.
    A fine-grained calorimeter prototype with tungsten absorber plates and scintillator tiles read out by silicon photomultipliers was built and exposed to particle beams at CERN. Results obtained with electrons, pions and protons of momenta up to 10 GeV are presented in terms of energy resolution and shower shape studies. The results are compared with several GEANT4 simulation models in order to assess the reliability of the Monte Carlo predictions relevant for a future experiment at CLIC.

    DOI： 10.1088/1748-0221/9/01/P01004

  • The development of a low energy neutron accelerator for rebunching pulsed neutrons

    S. Imajo, Y. Iwashita, H. M. Shimizu, M. Kitaguchi, S. Yamashita, Y. Arimoto, Tamaki Yoshioka, Y. Seki

    5th International Particle Accelerator Conference, IPAC 2014 IPAC 2014 Proceedings of the 5th International Particle Accelerator Conference   751 - 753   2014.1

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    The development of a low energy neutron accelerator for rebunching pulsed neutrons

  • Production of Ultra Cold Neutrons by a Doppler Shifter with Pulsed Neutrons at J-PARC Reviewed

    K. Mishima, S. Imajo, M. Hino, T. Ino, Y. Iwashita, R. Katayama, M. Kitaguchi, T. Oda, H. M. Shimizu, M. Utsuro, S. Yamashita, T. Yoshioka

    INTERNATIONAL WORKSHOP ON NEUTRON OPTICS AND DETECTORS (NOP&D 2013)   528 ( 1 )   2014.1

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    Ultracold neutrons (UCNs) are neutrons whose kinetic energy is around a few hundred nanoelectronvolts. Neutrons with such small kinetic energy can be trapped in a material vessel or magnetic fields. Because of these unique characteristics, UCNs are used for some important experiments of fundamental physics. The Doppler shifter is a device to produce UCN by slowing them down by the reflection on a mirror moving with half of the velocity of incoming neutrons. A Doppler shifter using a quadruple-stack of monochromatic supermin-ors that reflects neutrons with a velocity around 68m/s [1, Hino et al. (2010)] was fabricated, and operated with a pulsed neutron source of J-PARC. An important feature of the Doppler shifter is the use of a pulsed neutron beam Unlike in continuous neutron beams, the neutron velocity can be selected by choosing a time slice in a pulsed neutron bunch. Thus the UCN production improves by similar to 80 times in the case of J-PARC. We successfully produced the UCNs by the Doppler shifter: the measured UCN production rate is consistent with the simulations.

    DOI： 10.1088/1742-6596/528/1/012030

  • Hybrid ECAL Optimization and related developments Reviewed

    Taikan Suehara, H. Hirai, H. Sumida, H. Ueno, Y. Sudo, Tamaki Yoshioka, Kiyotomo Kawagoe

    2014.1

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    Hybrid ECAL Optimization and related developments

  • Development of a simulation for measuring neutron electric dipole moment Reviewed

    Ryo Katayama, Kenji Mishima, Satoru Yamashita, Dai Sakurai, Masaaki Kitaguchi, Tamaki Yoshioka, Yoshichika Seki

    Journal of Physics: Conference Series   528 ( 1 )   2014.1

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    The neutron electric dipole moment (nEDM) is sensitive to new physics beyond the standard model and could prove to be a new source of CP violation. Several experiments are being planned worldwide for its high-precision measurement. The nEDM is measured as the ultracold neutron (UCN) spin precession in a storage bottle under homogeneous electric and magnetic fields. In nEDM measurement, the systematic uncertainties are due to the motion of the UCNs, the geometry of the measurement system, and inhomogeneous electric and magnetic fields. Therefore, it is essential to quantitatively understand these effects in order to reduce them. Geant4UCN is an ideal simulation framework because it can compute the UCN trajectory, evaluate the time evolution of the spin precession due to arbitrary electric and magnetic fields, and define the storage geometry flexibly. We checked how accurately Geant4UCN can calculate the spin precession. We found that because of rounding errors, it cannot simulate it accurately enough for nEDM experiments, assuming homogeneous electric and magnetic fields with strengths of 10 kV/cm and 1 μT, respectively, and 100 s of storage. In this paper, we report on its discrepancies and describe a solution. © Published under licence by IOP Publishing Ltd.

    DOI： 10.1088/1742-6596/528/1/012031

  • Development of a new neutron mirror made of deuterated Diamond-like carbon Reviewed

    Dai Sakurai, Junsei Chiba, Takashi Ino, Nobunori Kakusho, Naokatsu Kaneko, Ryo Katayama, Masaaki Kitaguchi, Kenji Mishima, Suguru Muto, Kazuhide Ozeki, Yoshichika Seki, Hirohiko M. Shimizu, Satoru Yamashita, Tamaki Yoshioka, Daiki Nishimura

    Journal of Physics: Conference Series   528 ( 1 )   2014.1

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    We developed a new neutron mirror made of Diamond-like carbon (DLC). DLC is a film of amorphous carbon that has characteristics of both diamond and graphite. We produced DLC mirrors by ionization deposition method which is one of the chemical vapor deposition (CVD). Generally, DLC made by CVD contents a few tens of percentages of hydrogen. It decreases the Fermi potential of the DLC coating because hydrogen has negative Fermi potential. In order to increase the Fermi potential of the coating, we deuterated the DLC by using deuterated benzene for the source gas. The characteristics of the deuterated DLC(DDLC) coating was evaluated by RBS, ERDA, x-ray reflectivity, AFM. As a result, DDLC coating has 243neV due to deuteration, which is the same level as Ni. The RMS of height of the DDLC was 0.6nm so that the DDLC coating can be applied for a focusing mirror or specular transportation of pulsed neutron. Besides, we also develop Hydrogen/Deuterium DLC multiple layer mirror. So far, 4 layers mirror has been succeeded. © Published under licence by IOP Publishing Ltd.

    DOI： 10.1088/1742-6596/528/1/012010

  • Development of a new neutron mirror made of deuterated Diamond-like carbon Reviewed

    Sakurai, Dai, Chiba, Junsei, Ino, Takashi, Kakusho, Nobunori, Kaneko, Naokatsu, Katayama, Ryo, Kitaguchi, Masaaki, Mishima, Kenji, Muto, Suguru, Ozeki, Kazuhide, Seki, Yoshichika, Shimizu, Hirohiko M., Yamashita, Satoru, Yoshioka, Tamaki, Nishimura, Daiki

    INTERNATIONAL WORKSHOP ON NEUTRON OPTICS AND DETECTORS (NOP&D 2013)   528 ( 1 )   2014.1

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    We developed a new neutron mirror made of Diamond-like carbon (DLC). DLC is a film of amorphous carbon that has characteristics of both diamond and graphite. We produced DLC mirrors by ionization deposition method which is one of the chemical vapor deposition (CVD). Generally, DLC made by CVD contents a few tens of percentages of hydrogen. It decreases the Fermi potential of the DLC coating because hydrogen has negative Fermi potential. In order to increase the Fermi potential of the coating, we deuterated the DLC by using deuterated benzene for the source gas. The characteristics of the deuterated DLC(DDLC) coating was evaluated by RBS, ERDA, x-ray reflectivity, AFM. As a result, DDLC coating has 243neV due to deuteration, which is the same level as Ni. The RMS of height of the DDLC was 0.6nm so that the DDLC coating can be applied for a focusing mirror or specular transportation of pulsed neutron. Besides, we also develop Hydrogen/Deuterium DLC multiple layer mirror. So far, 4 layers mirror has been succeeded.

    DOI： 10.1088/1742-6596/528/1/012010

  • Characteristic study of silicon sensor for ILD ECAL Reviewed

    Shusuke Takada, Hiroto Hirai, Kiyotomo Kawagoe, Yohei Miyazaki, Yuji Sudo, Taikan Suehara, Hiroki Sumida, Tatsuhiko Tomita, Hiraku Ueno, Tamaki Yoshioka

    2014.1

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    Characteristic study of silicon sensor for ILD ECAL

  • A silicon sensor study for the ILD ECAL Reviewed

    Tatsuhiko Tomita, Hiroto Hirai, Kiyotomo Kawagoe, Yohei Miyazaki, Yuji Sudo, Taikan Suehara, Hiroki Sumida, Shusuke Takada, Hiraku Ueno, Tamaki Yoshioka

    Proceedings of Science   2014.1

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    A silicon sensor study for the ILD ECAL

  • Track segments in hadronic showers in a highly granular scintillator-steel hadron calorimeter Reviewed

    C. Adloff, J. -J. Blaising, M. Chefdeville, C. Drancourt, R. Gaglione, N. Geffroy, Y. Karyotakis, I. Koletsou, J. Prast, G. Vouters, K. Francis, J. Repond, J. Schlereth, J. Smith, L. Xia, E. Baldolemar, J. Li, S. T. Park, M. Sosebee, A. P. White, J. Yu, G. Eigen, Y. Mikami, N. K. Watson, G. Mavromanolakis, M. A. Thomson, D. R. Ward, W. Yan, D. Benchekroun, A. Hoummada, Y. Khoulaki, J. Apostolakis, D. Dannheim, A. Dotti, G. Folger, V. Ivantchenko, W. Klempt, E. van der Kraaij, A. -I. Lucaci-Timoce, A. Ribon, D. Schlatter, V. Uzhinskiy, C. Carloganu, P. Gay, S. Manen, L. Royer, M. Tytgat, N. Zaganidis, G. C. Blazey, A. Dyshkant, J. G. R. Lima, V. Zutshi, J. -Y. Hostachy, L. Morin, U. Cornett, D. David, G. Falley, K. Gadow, P. Goettlicher, C. Guenter, O. Hartbrich, B. Hermberg, S. Karstensen, F. Krivan, K. Krueger, S. Lu, S. Morozov, V. Morgunov, M. Reinecke, F. Sefkow, P. Smirnov, M. Terwort, N. Feege, E. Garutti, S. Laurien, I. Marchesini, M. Matysek, M. Ramilli, K. Briggl, P. Eckert, T. Harion, H. -Ch. Schultz-Coulon, W. Shen, R. Stamen, B. Bilki, E. Norbeck, Y. Onel, G. W. Wilson, K. Kawagoe, Y. Sudo, T. Yoshioka, P. D. Dauncey, A. -M. Magnan, V. Bartsch, M. Wing, F. Salvatore, E. Cortina Gil, S. Mannai, G. Baulieu, P. Calabria, L. Caponetto, C. Combaret, R. Della Negra, G. Grenier, R. Han, J-C. Ianigro, R. Kieffer, I. Laktineh, N. Lumb, H. Mathez, L. Mirabito, A. Petrukhin, A. Steen, W. Tromeur, M. Vander Donckt, Y. Zoccarato, E. Calvo Alamillo, M. -C. Fouz, J. Puerta-Pelayo, F. Corriveau, B. Bobchenko, M. Chadeeva, M. Danilov, A. Epifantsev, O. Markin, R. Mizuk, E. Novikov, V. Popov, V. Rusinov, E. Tarkovsky, N. Kirikova, V. Kozlov, P. Smirnov, Y. Soloviev, P. Buzhan, A. Ilyin, V. Kantserov, V. Kaplin, A. Karakash, E. Popova, V. Tikhomirov, C. Kiesling, K. Seidel, F. Simon, C. Soldner, M. Szalay, M. Tesar, L. Weuste, M. S. Amjad, J. Bonis, S. Callier, S. Conforti di Lorenzo, P. Cornebise, Ph. Doublet, F. Dulucq, J. Fleury, T. Frisson, N. van der Kolk, H. Li, G. Martin-Chassard, F. Richard, Ch. de la Taille, R. Poeschl, L. Raux, J. Rouene, N. Seguin-Moreau, M. Anduze, V. Balagura, V. Boudry, J-C. Brient, R. Cornat, M. Frotin, F. Gastaldi, E. Guliyev, Y. Haddad, F. Magniette, G. Musat, M. Ruan, T. H. Tran, H. Videau, B. Bulanek, J. Zacek, J. Cvach, P. Gallus, M. Havranek, M. Janata, J. Kvasnicka, D. Lednicky, M. Marcisovsky, I. Polak, J. Popule, L. Tomasek, M. Tomasek, P. Ruzicka, P. Sicho, J. Smolik, V. Vrba, J. Zalesak, B. Belhorma, H. Ghazlane, K. Kotera, T. Takeshita, S. Uozumi, D. Jeans, M. Goetze, J. Sauer, S. Weber, C. Zeitnitz

    JOURNAL OF INSTRUMENTATION   8 ( 9 )   2013.9

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    We investigate the three dimensional substructure of hadronic showers in the CAL-ICE scintillator-steel hadronic calorimeter. The high granularity of the detector is used to find track segments of minimum ionising particles within hadronic showers, providing sensitivity to the spatial structure and the details of secondary particle production in hadronic cascades. The multiplicity, length and angular distribution of identified track segments are compared to GEANT4 simulations with several different shower models. Track segments also provide the possibility for in-situ calibration of highly granular calorimeters.

    DOI： 10.1088/1748-0221/8/09/P09001

  • Validation of GEANT4 Monte Carlo models with a highly granular scintillator-steel hadron calorimeter Reviewed

    C. Adloff, J. Blaha, J. J. Blaising, C. Drancourt, A. Espargilière, R. Gaglione, N. Geffroy, Y. Karyotakis, J. Prast, G. Vouters, K. Francis, J. Repond, J. Schlereth, J. Smith, L. Xia, E. Baldolemar, J. Li, S. T. Park, M. Sosebee, A. P. White, J. Yu, T. Buanes, G. Eigen, Y. Mikami, N. K. Watson, G. Mavromanolakis, M. A. Thomson, D. R. Ward, W. Yan, D. Benchekroun, A. Hoummada, Y. Khoulaki, J. Apostolakis, A. Dotti, G. Folger, V. Ivantchenko, V. Uzhinskiy, M. Benyamna, C. Cârloganu, F. Fehr, P. Gay, S. Manen, L. Royer, G. C. Blazey, A. Dyshkant, J. G.R. Lima, V. Zutshi, J. Y. Hostachy, L. Morin, U. Cornett, D. David, G. Falley, K. Gadow, P. Göttlicher, C. Günter, B. Hermberg, S. Karstensen, F. Krivan, A. I. Lucaci-Timoce, S. Lu, B. Lutz, S. Morozov, V. Morgunov, M. Reinecke, F. Sefkow, P. Smirnov, M. Terwort, A. Vargas-Trevino, N. Feege, E. Garutti, I. Marchesini, M. Ramilli, P. Eckert, T. Harion, A. Kaplan, H. Ch Schultz-Coulon, W. Shen, R. Stamen, B. Bilki, E. Norbeck, Y. Onel, G. W. Wilson, K. Kawagoe, P. D. Dauncey, A. M. Magnan, V. Bartsch, M. Wing, F. Salvatore, E. Calvo Alamillo, M. C. Fouz, J. Puerta-Pelayo, B. Bobchenko, M. Chadeeva, M. Danilov, A. Epifantsev, O. Markin, R. Mizuk, E. Novikov, V. Popov, V. Rusinov, E. Tarkovsky, N. Kirikova, V. Kozlov, P. Smirnov, Y. Soloviev, P. Buzhan, A. Ilyin, V. Kantserov, V. Kaplin, A. Karakash, E. Popova, V. Tikhomirov, C. Kiesling, K. Seidel, F. Simon, C. Soldner, M. Szalay, M. Tesar, L. Weuste, M. S. Amjad, J. Bonis, S. Callier, S. Conforti Di Lorenzo, P. Cornebise, Ph Doublet, F. Dulucq, J. Fleury, T. Frisson, N. Van Der Kolk, H. Li, G. Martin-Chassard, F. Richard, Ch De La Taille, R. Pöschl, L. Raux, J. Rouëné, N. Seguin-Moreau, M. Anduze, V. Boudry, J. C. Brient, D. Jeans, P. Mora De Freitas, G. Musat, M. Reinhard, M. Ruan, H. Videau, B. Bulanek, J. Zacek, J. Cvach, P. Gallus, M. Havranek, M. Janata, J. Kvasnicka, D. Lednicky, M. Marcisovsky, I. Polak, J. Popule, L. Tomasek, M. Tomasek, P. Ruzicka, P. Sicho, J. Smolik, V. Vrba, J. Zalesak, B. Belhorma, H. Ghazlane, T. Takeshita, S. Uozumi, M. Götze, O. Hartbrich, J. Sauer, S. Weber, C. Zeitnitz

    Journal of Instrumentation   8 ( 7 )   2013.7

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    Calorimeters with a high granularity are a fundamental requirement of the Particle Flow paradigm. This paper focuses on the prototype of a hadron calorimeter with analog readout, consisting of thirty-eight scintillator layers alternating with steel absorber planes. The scintillator plates are finely segmented into tiles individually read out via Silicon Photomultipliers. The presented results are based on data collected with pion beams in the energy range from 8 GeV to 100 GeV. The fine segmentation of the sensitive layers and the high sampling frequency allow for an excellent reconstruction of the spatial development of hadronic showers. A comparison between data and Monte Carlo simulations is presented, concerning both the longitudinal and lateral development of hadronic showers and the global response of the calorimeter. The performance of several GEANT4 physics lists with respect to these observables is evaluated. © CERN 2013.

    DOI： 10.1088/1748-0221/8/07/P07005

  • Rebunching ultracold neutrons by magnetic deceleration for the neutron edm experimental at J-parc Reviewed

    S. Imajo, Y. Iwashita, P. Geltenbort, Y. Arimoto, H. M. Shimizu, M. Kitaguchi, Tamaki Yoshioka, Y. Seki

    4th International Particle Accelerator Conference, IPAC 2013 IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference   1187 - 1189   2013.1

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    Rebunching ultracold neutrons by magnetic deceleration for the neutron edm experimental at J-parc

  • Demonstration of focusing by a neutron accelerator Reviewed

    Yasushi Arimoto, Peter Gertenbort, Sohei Imajo, Yoshihisa Iwashita, Masaaki Kitaguchi, Yoshichika Seki, Hirohiko M. Shimizu, Tamaki Yoshioka

    Physical Review A - Atomic, Molecular, and Optical Physics   86 ( 2 )   2012.8

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    Space-time focusing was demonstrated by a neutron accelerator. Test experiments were performed by using very slow neutrons at High-Flux Reactor at Institut Laue-Langevin. Focusing of neutrons at the detector position through the accelerator was observed. Focusing neutrons enables us to transport the neutrons while maintaining density from source to experimental position. This will be a powerful technique for measurement of the permanent electric dipole moment of neutrons, which require a high density of neutrons. © 2012 American Physical Society.

    DOI： 10.1103/PhysRevA.86.023843

  • Development of longitudinal-gradient magnet for time focusing of ultra-cold neutron with anisotropic inter-pole Reviewed

    Yasushi Arimoto, Yoshihisa Iwashita, Tamaki Yoshioka, Masaaki Kitaguchi, Sohei Imajo, Hirohiko M. Shimizu, Koichiro Asahi, Takashi Ino, Yoshio Kamiya, Kenji Mishima, Suguru Muto, Kenji Sakai, Tatsushi Shima, Kaoru Taketani, Satoru Yamashita, Akihiro Yoshimi

    IEEE Transactions on Applied Superconductivity   22 ( 3 )   2012.1

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    Ultra-cold neutron (UCN) is attractive for a search of the neutron electric dipole moment (nEDM). It is crucial to store UCNs with high density in a bottle for nEDM measurement apparatus. To increase the density, time focusing technique can be useful, where slow neutrons are accelerated and fast neutrons are decelerated by using magnetic potential. This device is called rebuncher. The rebuncher consists of a gradient magnet, RF coil, and neutron guide. The magnet generates a field gradient of 3.5 T/m (from 1 T to 0.2 T within 24 cm) in the longitudinal direction. By using anisotropic inter-poles, the magnet is compact and keeps the gradient uniform. The fabricated magnet showed good performance as designed. © 2012 IEEE.

    DOI： 10.1109/TASC.2012.2183569

  • Rebunching low energy neutrons by magnetic acceleration and deceleration Reviewed

    Y. Iwashita, S. Imajo, M. Kitaguchi, Y. Arimoto, H. M. Shimizu, Tamaki Yoshioka, Y. Seki, P. Geltenbort

    3rd International Particle Accelerator Conference 2012, IPAC 2012 IPAC 2012 - International Particle Accelerator Conference 2012   2766 - 2768   2012.1

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    Rebunching low energy neutrons by magnetic acceleration and deceleration

  • Present status of neutron fundamental physics at J-PARC Reviewed

    Yasushi Arimoto, Haruhiko Funahashi, Nao Higashi, Masahiro Hino, Katsuya Hirota, Shohei Imajo, Takashi Ino, Yoshihisa Iwashita, Ryo Katayama, Masaaki Kitaguchi, Kenji Mishima, Suguru Muto, Hideyuki Oide, Hidetoshi Otono, Yoshichika Seki, Tatsushi Shima, Hirohiko M. Shimizu, Kaoru Taketani, Takahiro Yamada, Satoru Yamashita, Tamaki Yoshioka

    PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS   ( 1 )   2012.1

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    A neutron beamline for the study of fundamental physics has been constructed at the spallation neutron source of the Japan Proton Accelerator Research Complex (J-PARC). In-flight measurement of the neutron lifetime and the development of the transport optics of ultracold neutrons are in progress. The present status of the beamline and these experiments is reported.

    DOI： 10.1093/ptep/pts075

  • Present status of neutron fundamental physics at J-PARC Reviewed

    Yasushi Arimoto, Haruhiko Funahashi, Nao Higashi, Masahiro Hino, Katsuya Hirota, Shohei Imajo, Takashi Ino, Yoshihisa Iwashita, Ryo Katayama, Masaaki Kitaguchi, Kenji Mishima, Suguru Muto, Hideyuki Oide, Hidetoshi Otono, Yoshichika Seki, Tatsushi Shima, Hirohiko M. Shimizu, Kaoru Taketani, Takahiro Yamada, Satoru Yamashita, Tamaki Yoshioka

    Progress of Theoretical and Experimental Physics   2012 ( 1 )   2012.1

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    A neutron beamline for the study of fundamental physics has been constructed at the spallation neutron source of the Japan Proton Accelerator Research Complex (J-PARC). In-flight measurement of the neutron lifetime and the development of the transport optics of ultracold neutrons are in progress. The present status of the beamline and these experiments is reported.

    DOI： 10.1093/ptep/pts075

  • Measurement of the neutron beam polarization of BL05/NOP beamline at J-PARC Reviewed

    T. Ino, Y. Arimoto, T. Yoshioka, K. Mishima, K. Taketani, S. Muto, H. M. Shimizu, H. Kira, Y. Sakaguchi, T. Oku, K. Sakai, T. Shinohara, J. Suzuki, H. Otono, H. Oide, S. Yamashita, S. Imajo, H. Funahashi, M. Yamada, Y. Iwashita, M. Kitaguchi, M. Hino, Z. Suzuki, T. Sanuki, T. Seki, K. Hirota, K. Ikeda, H. Sato, Y. Otake, H. Ohmori, T. Morishima, T. Shima

    PHYSICA B-CONDENSED MATTER   406 ( 12 )   2424 - 2428   2011.6

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    We measured the neutron beam polarization of the BL05/NOP (Neutron Optics and Physics) beamline at J-PARC with an accuracy of less than 10(-3) using polarized He-3 gas as a neutron spin analyzer. Precise polarimetry of the neutron beam is necessary to understand the beamline optics as well as for the asymmetry measurements of the neutron beta decay, which are planned in this beamline. (C) 2011 Elsevier B.V. All rights reserved.

    DOI： 10.1016/j.physb.2011.01.009

  • A high S/N ratio spin flip chopper system for a pulsed neutron source Reviewed

    K. Taketani, T. Ebisawa, M. Hino, K. Hirota, T. Ino, M. Kitaguchi, K. Mishima, S. Muto, H. Oide, T. Oku, H. Otono, K. Sakai, T. Shima, H. M. Shimizu, S. Yamashita, T. Yoshioka

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   634 ( 1 SUPPL. )   2011.4

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    We report a successful demonstration of a high S/N ratio spin flip chopper (SFC) system for pulsed neutron sources. The system consists of two SFCs and each SFC consists of a radio frequency (RF) flipper and Soller magnetic supermirrors. The aperture of the Soller mirror was 18 mm in width and 20 mm in height. The S/N ratio of the system was 306:1. This system is going to be installed to measure neutron lifetime precisely using the cold-neutron beam line, BL05 polarized-beam branch, at the Materials and Life Science Experimental Facility (MLF) in Japan Proton Accelerator Research Complex (J-PARC). © 2010 Elsevier B.V. All rights reserved.

    DOI： 10.1016/j.nima.2010.06.357

  • Polarization of very cold neutron using a permanent magnet quadrupole Reviewed

    Tamaki Yoshioka, Kenji Mishima, Takashi Ino, Kaoru Taketani, Suguru Muto, Takahiro Morishima, Hirohiko M. Shimizu, Takayuki Oku, Junichi Suzuki, Takenao Shinohara, Kenji Sakai, Hiromi Sato, Katsuya Hirota, Yoshie Otake, Masaaki Kitaguchi, Masahiro Hino, Yoshichika Seki, Yoshihisa Iwashita, Masako Yamada, Masahiro Ichikawa, Takanori Sugimoto, Shinsuke Kawasaki, Sachio Komamiya, Hidetoshi Otono, Yoshio Kamiya, Satoru Yamashita, Peter Geltenbort

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   634 ( 1 SUPPL. )   2011.4

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    For the future fundamental physics experiments by using cold neutrons, we are developing a device which can measure the neutron polarization degree by accuracy significantly below 10 . A quadrupole magnet is one of the promising candidate to measure the neutron polarization degree by such extremely high precision. We have performed a polarization experiment by using the quadrupole magnets at the Very Cold Neutron (VCN) port of the PF-2 in the Institute Laue-Langevin (ILL). As a result, we obtained the polarization degree P with very high accuracy P=0.9994±0.0001(stat.)±0.0003(syst.), which meet our requirement significantly. © 2010 Elsevier B.V. All rights reserved. -3

    DOI： 10.1016/j.nima.2010.05.029

  • Development of thin film neutron focusing lenses Reviewed

    Takashi Ino, Takenao Shinohara, Tomohiro Adachi, Katsuya Hirota, Masahiro Hino, Takayuki Oku, Kaoru Taketani, Kenji Mishima, Tamaki Yoshioka, Yasushi Arimoto, Suguru Muto, Jun Ichi Suzuki, Hirohiko M. Shimizu

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   634 ( 1 SUPPL. )   2011.4

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    We have developed thin film Fresnel lenses made of a hydrogen-free amorphous polymer for neutron focusing purposes. A neutron beam test showed the strong focusing of a cold neutron beam, and an increase of the neutron intensity was observed to be more than 50 times. © 2010 Elsevier B.V. All rights reserved.

    DOI： 10.1016/j.nima.2010.05.046

  • A transport optics for pulsed ultracold neutron sources Reviewed

    H. M. Shimizu, Y. Iwashita, M. Kitaguchi, K. Mishima, T. Yoshioka

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   634 ( 1 SUPPL. )   2011.4

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    High-density ultracold neutron (UCN) is commonly desired for the improvement of the experimental sensitivity to measure the electric dipole moment of neutrons. We discuss a method to suppress the decrease of the UCN density in transporting UCNs to the spatially separated storage volume by changing the UCN velocity synchronizing to the UCN time-of-flight. © 2010 Elsevier B.V. All rights reserved.

    DOI： 10.1016/j.nima.2010.06.210

  • Longitudinal-gradient magnet for time focusing of ultra-cold neutrons Reviewed

    Y. Arimoto, T. Yoshioka, H. M. Shimizu, K. Mishima, T. Ino, K. Taketani, S. Muto, M. Kitaguchi, S. Imajo, Y. Iwashita, S. Yamashita, Y. Kamiya, A. Yoshimi, K. Asahi, T. Shima, K. Sakai

    Physics Procedia   17   20 - 29   2011.1

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    A gradient DC magnet is designed using 3D magnetic field analysis code. This magnet, referred to as a B magnet, is one of the key elements of a time-focusing device for ultra-cold neutrons (UCNs) based on a radio frequency gradient flipper - a so-called rebuncher. The magnet generates a guide and a potential field that interacts with the magnetic moment of UCNs and its main body comprises a C-shaped yoke made from iron. A field gradient is generated by a pole arrangement that includes an anisotropic inter-pole, which causes the fringe field to be uniform in the longitudinal direction even when the pole gap distance changes. The designed magnet has the following properties: (1) a maximum B-field of 10 kGauss, decreasing to 2 kGauss at a longitudinal distance of 25 cm, with a gradient of less than 400 Gauss/cm, (2) variations in the fringe field along the y direction is less than 4% over a range of -3 cm≤ y ≤ 3 cm at any z position in the spin-flipping region. Tracking simulations show that the B magnet is capable of accepting UCNs in the velocity range 2.3∼3.3 m/s. © 2011 Published by Elsevier B.V. 0 0

    DOI： 10.1016/j.phpro.2011.06.013

  • On the basic mechanism of Pixelized Photon Detectors Reviewed

    H. Otono, H. Oide, S. Yamashita, T. Yoshioka

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   610 ( 1 )   397 - 399   2009.10

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    A Pixelized Photon Detector (PPD) is a generic name for the semiconductor devices operated in the Geiger-mode, such as Silicon PhotoMultiplier and Multi-Pixel Photon Counter, which has high photon counting capability. While the internal mechanisms of the PPD have been intensively studied in recent years, the existing models do not include the avalanche process. We have simulated the multiplication and quenching of the avalanche process and have succeeded in reproducing the output waveform of the PPD. Furthermore our model predicts the existence of dead-time in the PPD which has never been numerically predicted. For searching the dead-time, we also have developed waveform analysis method using deconvolution which has the potential to distinguish neighboring pulses precisely. In this paper, we discuss our improved model and waveform analysis method. © 2009 Elsevier B.V. All rights reserved.

    DOI： 10.1016/j.nima.2009.05.139

  • Development of modulating permanent magnet sextupole lens for focusing of pulsed cold neutrons Reviewed

    Masako Yamada, Yoshihisa Iwashita, Masahiro Ichikawa, Takanori Sugimoto, Hiromu Tongu, Hiroshi Fujisawa, Hirohiko M. Shimizu, Takashi Ino, Kenji Mishima, Kaoru Taketani, Tamaki Yoshioka, Suguru Muto, Takahiro Morishima, Takayuki Oku, Jun ichi Suzuki, Takenao Shinohara, Kenji Sakai, Hiromi Sato, Katsuya Hirota, Yoshie Otake, Yoshichika Seki, Shinsuke Kawasaki, Sachio Komamiya, Yoshio Kamiya, Hidetoshi Otono, Satoru Yamashita, Peter Geltenbort

    Physica B: Condensed Matter   404 ( 17 )   2646 - 2651   2009.9

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    Modulating permanent magnet sextupole lens (PMSx) for focusing pulsed cold neutrons is under development. The synchronized modulation of its field gradient suppresses the chromatic aberration which arises from the Time Of Flight method. The strength of the magnetic field, the torque, and the rise of temperature during its operation are studied on a fabricated prototype. Experiments on focusing pulsed very cold neutrons (VCN) at ILL (Institute of Laue Langevin, France) were carried out and VCN with around λ=40 Å were focused by the PMSx at a focal length of about 0.5 m. The experimental results are presented in conjunction with the principle of the neutron focusing and the modulating method of the focal strength of permanent magnet lens with the double ring structure. © 2009 Elsevier B.V. All rights reserved.

    DOI： 10.1016/j.physb.2009.06.132

  • Highly polarized very cold neutrons through a permanent magnet quadrupole Reviewed

    Kaoru Taketani, Kenji Mishima, Takashi Ino, Tamaki Yoshioka, Suguru Muto, Takahiro Morishima, Hirohiko M. Shimizu, Takayuki Oku, Junichi Suzuki, Takenao Shinohara, Kenji Sakai, Hiromi Sato, Katsuya Hirota, Yoshie Otake, Masaaki Kitaguchi, Masahiro Hino, Yoshichika Seki, Yoshihisa Iwashita, Masako Yamada, Masahiro Ichikawa, Takanori Sugimoto, Shinsuke Kawasaki, Sachio Komamiya, Yoshio Kamiya, Hidetoshi Otono, Satoru Yamashita, Peter Geltenbort

    Physica B: Condensed Matter   404 ( 17 )   2643 - 2645   2009.9

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    We obtained highly polarized very cold neutrons through a quadrupole magnet with a large aperture. When neutrons go through a quadrupole magnet, parallel-spin neutrons are attracted to the magnet axis and anti-parallel-spin neutrons are repelled off the axis. Therefore, the neutrons through a sufficiently long quadrupole magnet have completely parallel-spin. At the downstream of the quadrupole magnet, we placed another quadrupole magnet to divide neutrons into two regions depending on their spin directions. We obtained the neutron polarization from the integrated count of the two regions and found it was 99.88±0.09 (stat.)±0.05 (syst.)&#37;. © 2009 Elsevier B.V. All rights reserved.

    DOI： 10.1016/j.physb.2009.06.045

  • Study of the decay K+→π+νν? in the momentum region 140<Pπ<199MeV/c Reviewed

    A. V. Artamonov, B. Bassalleck, B. Bhuyan, E. W. Blackmore, D. A. Bryman, S. Chen, I. H. Chiang, I. A. Christidi, P. S. Cooper, M. V. Diwan, J. S. Frank, T. Fujiwara, J. Hu, J. Ives, D. E. Jaffe, S. Kabe, S. H. Kettell, M. M. Khabibullin, A. N. Khotjantsev, P. Kitching, M. Kobayashi, T. K. Komatsubara, A. Konaka, A. P. Kozhevnikov, Yu G. Kudenko, A. Kushnirenko, L. G. Landsberg, B. Lewis, K. K. Li, L. S. Littenberg, J. A. MacDonald, J. Mildenberger, O. V. Mineev, M. Miyajima, K. Mizouchi, V. A. Mukhin, N. Muramatsu, T. Nakano, M. Nomachi, T. Nomura, T. Numao, V. F. Obraztsov, K. Omata, D. I. Patalakha, S. V. Petrenko, R. Poutissou, E. J. Ramberg, G. Redlinger, T. Sato, Tamaki Yoshioka

    Physical Review D - Particles, Fields, Gravitation and Cosmology   79 ( 9 )   2009.5

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    Study of the decay K+→π+νν̄ in the momentum region 140<Pπ<199MeV/c
    Experiment E949 at Brookhaven National Laboratory has observed three new events consistent with the decay K+→π+νν̄ in the pion momentum region 140<Pπ<199MeV/c in an exposure of 1.71×1012 stopped kaons with an estimated total background of 0.93±0.17(stat)-0. 24+0.32(syst) events. This brings the total number of observed K+→π+νν̄ events to seven. Combining this observation with previous results, assuming the pion spectrum predicted by the standard model, results in a branching ratio of B(K+→π+νν̄)=(1.73-1.05+1.15) ×10-10. An interpretation of the results for alternative models of the decay K+→π++nothing is also presented. © 2009 The American Physical Society.

    DOI： 10.1103/PhysRevD.79.092004

  • Study of the decay K+ -> pi(+) nu(nu)over-bar in the momentum region 140 < P-pi < 199 MeV/c Reviewed

    A. V. Artamonov, B. Bassalleck, B. Bhuyan, E. W. Blackmore, D. A. Bryman, S. Chen, I. -H. Chiang, I. -A. Christidi, P. S. Cooper, M. V. Diwan, J. S. Frank, T. Fujiwara, J. Hu, J. Ives, D. E. Jaffe, S. Kabe, S. H. Kettell, M. M. Khabibullin, A. N. Khotjantsev, P. Kitching, M. Kobayashi, T. K. Komatsubara, A. Konaka, A. P. Kozhevnikov, Yu. G. Kudenko, A. Kushnirenko, L. G. Landsberg, B. Lewis, K. K. Li, L. S. Littenberg, J. A. Macdonald, J. Mildenberger, O. V. Mineev, M. Miyajima, K. Mizouchi, V. A. Mukhin, N. Muramatsu, T. Nakano, M. Nomachi, T. Nomura, T. Numao, V. F. Obraztsov, K. Omata, D. I. Patalakha, S. V. Petrenko, R. Poutissou, E. J. Ramberg, G. Redlinger, T. Sato, T. Sekiguchi, T. Shinkawa, R. C. Strand, S. Sugimoto, Y. Tamagawa, R. Tschirhart, T. Tsunemi, D. V. Vavilov, B. Viren, Zhe Wang, N. V. Yershov, Y. Yoshimura, T. Yoshioka

    PHYSICAL REVIEW D   79 ( 9 )   2009.5

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    Experiment E949 at Brookhaven National Laboratory has observed three new events consistent with the decay K+ -> pi(+) nu(nu) over bar in the pion momentum region 140 < P-pi < 199 MeV/c in an exposure of 1.71 x 10(12) stopped kaons with an estimated total background of 0.93 +/- 0.17(stat)(-0.24)(+0.32) (syst) events. This brings the total number of observed K+ -> pi(+)nu(nu) over bar events to seven. Combining this observation with previous results, assuming the pion spectrum predicted by the standard model, results in a branching ratio of B(K+ -> pi(+)nu(nu) over bar) = 1.73(+1.15)(-1.05) x 10(-10). An interpretation of the results for alternative models of the decay K+ -> pi(+) + nothing is also presented.

    DOI： 10.1103/PhysRevD.79.092004

  • Hidden particle production at the ILC Reviewed

    Hideo Itoh, Katsumasa Ikematsu, Keisuke Fujii, Hitoshi Hano, Nobuchika Okada, Tamaki Yoshioka

    8th General Meeting of the ILC Physics Working Group Proceedings of the ILC Physics Working Group Meetings at KEK in the Period from May 2007 to June 2009   98 - 112   2009.1

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    Hidden particle production at the ILC

  • New measurement of the K+→π+νν? branching ratio Reviewed

    A. V. Artamonov, B. Bassalleck, B. Bhuyan, E. W. Blackmore, D. A. Bryman, S. Chen, I. H. Chiang, I. A. Christidi, P. S. Cooper, M. V. Diwan, J. S. Frank, T. Fujiwara, J. Hu, J. Ives, D. E. Jaffe, S. Kabe, S. H. Kettell, M. M. Khabibullin, A. N. Khotjantsev, P. Kitching, M. Kobayashi, T. K. Komatsubara, A. Konaka, A. P. Kozhevnikov, Yu G. Kudenko, A. Kushnirenko, L. G. Landsberg, B. Lewis, K. K. Li, L. S. Littenberg, J. A. MacDonald, J. Mildenberger, O. V. Mineev, M. Miyajima, K. Mizouchi, V. A. Mukhin, N. Muramatsu, T. Nakano, M. Nomachi, T. Nomura, T. Numao, V. F. Obraztsov, K. Omata, D. I. Patalakha, S. V. Petrenko, R. Poutissou, E. J. Ramberg, G. Redlinger, T. Sato, Tamaki Yoshioka

    Physical Review Letters   101 ( 19 )   2008.11

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    New measurement of the K+→π+νν̄ branching ratio
    Three events for the decay K+→π+νν̄ have been observed in the pion momentum region below the K+→π+π0 peak, 140<Pπ<199MeV/c, with an estimated background of 0.93±0.17(stat. )-0.24+0.32(syst.) events. Combining this observation with previously reported results yields a branching ratio of B(K+→π+νν̄)=(1.73-1.05+1. 15)×10-10 consistent with the standard model prediction. © 2008 The American Physical Society.

    DOI： 10.1103/PhysRevLett.101.191802

  • Hidden particle production at the ILC Reviewed

    Keisuke Fujii, Hitoshi Hano, Hideo Itoh, Nobuchika Okada, Tamaki Yoshioka

    Physical Review D - Particles, Fields, Gravitation and Cosmology   78 ( 1 )   2008.7

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    In a class of new physics models, the new physics sector is completely or partly hidden, namely, a singlet under the standard model (SM) gauge group. Hidden fields included in such new physics models communicate with the standard model sector through higher-dimensional operators. If a cutoff lies in the TeV range, such hidden fields can be produced at future colliders. We consider a scalar field as an example of the hidden fields. Collider phenomenology on this hidden scalar is similar to that of the SM Higgs boson, but there are several features quite different from those of the Higgs boson. We investigate productions of the hidden scalar at the International Linear Collider (ILC) and study the feasibility of its measurements, in particular, how well the ILC distinguishes the scalar from the Higgs boson, through realistic Monte Carlo simulations. © 2008 The American Physical Society.

    DOI： 10.1103/PhysRevD.78.015008

  • Measurement of the K+→π+νν? branching ratio Reviewed

    S. Adler, V. V. Anisimovsky, M. Aoki, M. Ardebili, A. V. Artamonov, M. Atiya, B. Bassalleck, A. O. Bazarko, B. Bhuyan, E. W. Blackmore, D. A. Bryman, S. Chen, I. H. Chiang, I. A. Christidi, M. R. Convery, P. S. Cooper, M. V. Diwan, J. S. Frank, T. Fujiwara, J. Haggerty, J. Hu, T. Inagaki, M. M. Ito, A. P. Ivashkin, D. E. Jaffe, S. Kabe, M. Kazumori, Y. Kuno, M. Kuriki, S. H. Kettell, M. M. Khabibullin, A. N. Khotjantsev, P. Kitching, M. Kobayashi, T. K. Komatsubara, A. Konaka, A. P. Kozhevnikov, Yu G. Kudenko, A. Kushnirenko, L. G. Landsberg, B. Lewis, K. K. Li, L. S. Littenberg, J. A. Macdonald, D. R. Marlow, R. A. McPherson, P. D. Meyers, J. Mildenberger, O. V. Mineev, Tamaki Yoshioka

    Physical Review D - Particles, Fields, Gravitation and Cosmology   77 ( 5 )   2008.3

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    Measurement of the K+->pi(+)nu(nu)over-bar branching ratio
    Experiment E949 at Brookhaven National Laboratory studied the rare decay K+ -> pi(+)nu(nu) over bar and other processes with an exposure of 1.77 x 10(12) K+'s. The data were analyzed using a blind analysis technique yielding one candidate event with an estimated background of 0.30 +/- 0.03 events. Combining this result with the observation of two candidate events by the predecessor experiment E787 gave the branching ratio B(K+ -> pi(+)nu (nu) = 1.47(-0.89)(+1.30) x 10(-10), consistent with the standard model prediction of (0.74 +/- 0.20) x 10(-10). This is a more detailed report of results previously published [V. V. Anisimovsky et al., Phys. Rev. Lett. 93, 031801 (2004)].

    DOI： 10.1103/PhysRevD.77.052003

  • Performance of GLD detector Reviewed

    T. Yoshioka

    Pramana - Journal of Physics   69 ( 6 )   1115 - 1118   2007.12

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    Most of the important physics processes to be studied in the international linear collider (ILC) experiment have multi-jets in the final state. In order to achieve better jet energy resolution, the so-called particle flow algorithm (PFA) will be employed and there is a general consensus that PFA derives overall ILC detector design. Four detector concepts for the ILC experiment have been proposed so far in the world; the GLD detector that has a large inner calorimeter radius, which is considered to have an advantage for a PFA, is one of them. In this paper, general scheme and performance of the GLD-PFA will be presented. © Indian Academy of Sciences.

    DOI： 10.1007/s12043-007-0238-7

  • Development and study of the multi pixel photon counter Reviewed

    S. Gomi, H. Hano, T. Iijima, S. Itoh, K. Kawagoe, S. H. Kim, T. Kubota, T. Maeda, T. Matsumura, Y. Mazuka, K. Miyabayashi, H. Miyata, T. Murakami, T. Nakadaira, T. Nakaya, H. Otono, E. Sano, T. Shinkawa, Y. Sudo, T. Takeshita, M. Taguchi, T. Tsubokawa, S. Uozumi, M. Yamaoka, H. Yamazaki, M. Yokoyama, K. Yoshimura, T. Yoshioka

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   581 ( 1-2 SPEC. ISS. )   427 - 432   2007.10

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    The Multi Pixel Photon Counter is a novel semiconductor photon sensor which consists of 100-1600 micro APD pixels. Each pixel works in limited Geiger mode with an inverse bias voltage around 80 V. The MPPC has many remarkable features such as high gain, large photon detection efficiency, low cost and tolerance for magnetic field. Fundamental properties, such as the gain, dark noise rate and inter-pixel cross-talk, have been measured with three different samples which have 100, 400, and 1600 pixels. Variation of the gain over 750 samples, and uniformity of the gain and photon sensitivity within one pixel are also evaluated. As the result of the tests, it is confirmed that the MPPC has satisfactory performance for many applications, not only for high energy physics experiments but also for medical engineering systems. © 2007 Elsevier B.V. All rights reserved.

    DOI： 10.1016/j.nima.2007.08.020

  • Study of MPPC at liquid nitrogen temperature Reviewed

    Hidetoshi Otono, S. Yamashita, Tamaki Yoshioka, H. Oide, T. Suehiro, H. Hano

    Proceedings of Science   2007.1

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    Study of MPPC at liquid nitrogen temperature

  • Study of afterpulsing of MPPC with waveform analysis Reviewed

    H. Oide, Hidetoshi Otono, S. Yamashita, Tamaki Yoshioka, H. Hano, T. Suehiro

    Proceedings of Science   2007.1

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    Study of afterpulsing of MPPC with waveform analysis

  • Performance of connected GSO bars Reviewed

    Y. Tamagawa, H. Shirasaka, M. Kobayashi, T. K. Komatsubara, K. Mimori, K. Omata, T. Sekiguchi, S. Sugimoto, T. Tsunemi, T. Yoshioka, Y. Yoshimura, T. Fujiwara

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   562 ( 1 )   120 - 126   2006.6

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    The performance of connected GSO (Gd SiO :Ce) bars was investigated using a proton beam of 0.6-1.0 GeV/c. Single crystals of 20 cm-long GSO with different Ce concentrations (1.5, 0.5 mol&#37;) and cross-sections (1×1 cm , 2×2 cm ) were prepared. Long GSO bars were constructed by connecting two crystals of the same type with or without a 10 cm-long plastic scintillator between the crystals. The position dependences of the pulse height, energy resolution and time resolution were investigated. At a typical proton momentum, 1.0 GeV/c, the best energy resolution was 4.8&#37; for 2×2×20 cm GSO crystals doped with 0.5 mol&#37; Ce due to the larger light yield, and the best position resolution was 0.55 cm for 1.5 mol&#37; Ce due to the shorter attenuation length. © 2006 Elsevier B.V. All rights reserved. 2 5 2 2 3

    DOI： 10.1016/j.nima.2006.02.189

  • Development of multi-pixel photon counters Reviewed

    S. Gomi, M. Taguchi, H. Hano, S. Itoh, T. Kubota, X. Maeda, Y. Mazuka, H. Otono, E. Sano, Y. Sudo, T. Tsubokawa, M. Yamaoka, H. Yamazaki, S. Uozumi, T. Yoshioka, T. Lijima, K. Kawagoe, S. H. Kim, T. Matsumura, K. Miyabayashi, T. Murakami, T. Nakadaira, T. Nakaya, T. Shinkawa, T. Takeshita, M. Yokoyama, K. Yoshimura

    IEEE Nuclear Science Symposium Conference Record   2   1105 - 1111   2006.1

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    The multi-pixel photon counter (MPPC) is a newly developed photodetector with an excellent photon counting capability. It also has many attractive features such as small size, high gain, low operation voltage and power consumption, and capability of operating in magnetic fields and in room temperature. The basic performance of samples has been measured. A gain of ∼10 is achieved with a noise rate less than 500 kHz with 1 p.e. threshold, and cross-talk probability of less than 40% at room temperature. The photon detection efficiency for green light is twice or more that of the photomultiplier tubes. It is found that the basic performance of the MPPC is satisfactory for use in real experiments. © 2006 IEEE. 6

    DOI： 10.1109/NSSMIC.2006.356040

  • New cutting scheme of magnetic alloy cores for J-PARC synchrotrons Reviewed

    Masahito Yoshii, Shozo Anami, Yoshisato Funahashi, Eizi Ezura, Keigo Hara, Chihiro Ohmori, Akira Takagi, Makoto Toda, Kenji Ueno, Masahiro Nomura, Fumihiko Tamura, Masanobu Yamamoto, Alexander Schnase, Katsushi Hasegawa, Tamaki Yoshioka, Yuichi Morita

    10th European Particle Accelerator Conference, EPAC 2006 EPAC 2006 - Contributions to the Proceedings   1313 - 1315   2006.1

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    New cutting scheme of magnetic alloy cores for J-PARC synchrotrons

  • Upper limit on the branching ratio for the decay π0→νν? Reviewed

    A. V. Artamonov, B. Bassalleck, B. Bhuyan, E. W. Blackmore, D. A. Bryman, S. Chen, I. H. Chiang, I. A. Christidi, P. S. Cooper, M. V. Diwan, J. S. Frank, T. Fujiwara, J. Hu, D. E. Jaffe, S. Kabe, S. H. Kettell, M. M. Khabibullin, A. N. Khotjantsev, P. Kitching, M. Kobayashi, T. K. Komatsubara, A. Konaka, A. P. Kozhevnikov, Yu G. Kudenko, A. Kushnirenko, L. G. Landsberg, B. Lewis, K. K. Li, L. S. Littenberg, J. A. MacDonald, J. Mildenberger, O. V. Mineev, M. Miyajima, K. Mizouchi, V. A. Mukhin, N. Muramatsu, T. Nakano, M. Nomachi, T. Nomura, T. Numao, V. F. Obraztsov, K. Omata, D. I. Patalakha, S. V. Petrenko, R. Poutissou, E. J. Ramberg, G. Redlinger, T. Sato, T. Sekiguchi, Tamaki Yoshioka

    Physical Review D - Particles, Fields, Gravitation and Cosmology   72 ( 9 )   2005.11

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    Upper limit on the branching ratio for the decay π0→νν̄
    A sample of kinematically identified K+→π+π0 decays obtained with the E949 detector was used to search for the helicity-suppressed decay π0→νν̄ resulting in an upper limit of 2.7×10-7 at 90&#37; confidence level. The upper limit is also applicable to π0 decays into unknown weakly-interacting particles. © 2005 The American Physical Society.

    DOI： 10.1103/PhysRevD.72.091102

  • Upper limit on the branching ratio for the decay pi 0 -> vv(-) Reviewed

    AV Artamonov, B Bassalleck, B Bhuyan, EW Blackmore, DA Bryman, S Chen, IH Chiang, I-A Christidi, PS Cooper, MV Diwan, JS Frank, T Fujiwara, J Hu, DE Jaffe, S Kabe, SH Kettell, MM Khabibullin, AN Khotjantsev, P Kitching, M Kobayashi, TK Komatsubara, A Konaka, AP Kozhevnikov, YG Kudenko, A Kushnirenko, LG Landsberg, B Lewis, KK Li, LS Littenberg, JA Macdonald, J Mildenberger, OV Mineev, M Miyajima, K Mizouchi, VA Mukhin, N Muramatsu, T Nakano, M Nomachi, T Nomura, T Numao, VF Obraztsov, K Omata, DI Patalakha, SV Petrenko, R Poutissou, EJ Ramberg, G Redlinger, T Sato, T Sekiguchi, T Shinkawa, RC Strand, S Sugimoto, Y Tamagawa, R Tschirhart, T Tsunemi, DV Vavilov, B Viren, NV Yershov, Y Yoshimura, T Yoshioka

    PHYSICAL REVIEW D   72 ( 9 )   2005.11

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    A sample of kinematically identified K+->pi(+)pi(0) decays obtained with the E949 detector was used to search for the helicity-suppressed decay pi(0)->nu(v) over bar(v) over bar resulting in an upper limit of 2.7x10(-7) at 90&#37; confidence level. The upper limit is also applicable to pi(0) decays into unknown weakly-interacting particles.

    DOI： 10.1103/PhysRevD.72.091102

  • Search for the decay K+ → π+γγ in the π+ momentum region P > 213 MeV/c Reviewed

    A. V. Artamonov, B. Bassalleck, B. Bhuyan, E. W. Blackmore, D. A. Bryman, S. Chen, I. H. Chiang, I. A. Christidi, P. S. Cooper, M. V. Diwan, J. S. Frank, T. Fujiwara, J. Hu, D. E. Jaffe, S. Kabe, S. H. Kettell, M. M. Khabibullin, A. N. Khotjantsev, P. Kitching, M. Kobayashi, T. K. Komatsubara, A. Konaka, A. P. Kozhevnikov, Yu G. Kudenko, A. Kushnirenko, L. G. Landsberg, B. Lewis, K. K. Li, L. S. Littenberg, J. A. Macdonald, J. Mildenberger, O. V. Mineev, M. Miyajima, K. Mizouchi, V. A. Mukhin, N. Muramatsu, T. Nakano, M. Nomachi, T. Nomura, T. Numao, V. F. Obraztsov, K. Omata, D. I. Patalakha, S. V. Petrenko, R. Poutissou, E. J. Ramberg, G. Redlinger, T. Sato, T. Sekiguchi, Tamaki Yoshioka

    Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics   623 ( 3-4 )   192 - 199   2005.9

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    Search for the decay K+ → π+γγ in the π+ momentum region P > 213 MeV/c
    We have searched for the K →π γγ decay in the kinematic region with π momentum close to the end point. No events were observed, and the 90&#37; confidence-level upper limit on the partial branching ratio was obtained, B(K →π γγ,P>213 MeV/c)<8.3×10 under the assumption of chiral perturbation theory including next-to-leading order "unitarity" corrections. The same data were used to determine an upper limit on the K →π γ branching ratio of 2.3×10 at the 90&#37; confidence level. © 2005 Elsevier B.V. All rights reserved. + + + + + -9 + + -9

    DOI： 10.1016/j.physletb.2005.07.057

  • Detector concepts Reviewed

    Gerald Aarons, Toshinori Abe, Jason Abernathy, Medina Ablikim, Halina Abramowicz, David Adey, Catherine Adloff, Chris Adolphsen, Konstantin Afanaciev, Ilya Agapov, Jung Keun Ahn, Hiroaki Aihara, Mitsuo Akemoto, Maria Del CarmenAlabau, Justin Albert, Hartwig Albrecht, Michael Albrecht, David Alesini, Gideon Alexander, Jim Alexander, Wade Allison, John Amann, Ramila Amirikas, Qi An, Shozo Anami, B. Ananthanarayan, Terry Anderson, Ladislav Andricek, Marc Anduze, Michael Anerella, Nikolai Anfimov, Deepa Angal-Kalinin, Sergei Antipov, Claire Antoine, Mayumi Aoki, Atsushi Aoza, Steve Aplin, Rob Appleby, Yasuo Arai, Sakae Araki, Tug Arkan, Ned Arnold, Ray Arnold, Richard Arnowitt, Xavier Artru, Kunal Arya, Alexander Aryshev, Eri Asakawa, Fred Asiri, David Asner, Muzaffer Atac, Grigor Atoian, David Attié, Jean Eudes Augustin, David B. Augustine, Bradley Ayres, Tariq Aziz, Derek Baars, Frederique Badaud, Nigel Baddams, Jonathan Bagger, Sha Bai, David Bailey, Ian R. Bailey, David Baker, Nikolai I. Balalykin, Juan Pablo Balbuena, Jean Luc Baldy, Markus Ball, Maurice Ball, Alessandro Ballestrero, Jamie Ballin, Charles Baltay, Philip Bambade, Syuichi Ban, Henry Band, Karl Bane, Bakul Banerjee, Serena Barbanotti, Daniele Barbareschi, Angela Barbaro-Galtieri, Desmond P. Barber, Mauricio Barbi, Dmitri Y. Bardin, Barry Barish, Timothy L. Barklow, Roger Barlow, Virgil E. Barnes, Maura Barone, Christoph Bartels, Valeria Bartsch, Rahul Basu, Marco Battaglia, Yuri Batygin, Jerome Baudot, Ulrich Baur, D. Elwyn Baynham, Carl Beard, Chris Bebek, Philip Bechtle

    LCWS 2005 - 2005 International Linear Collider Workshop   2005.1

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  • Improved measurement of the K+ → π+ νν? branching ratio Reviewed

    V. V. Anisimovsky, A. V. Artamonov, B. Bassalleck, B. Bhuyan, E. W. Blackmore, D. A. Bryman, S. Chen, I. H. Chiang, I. A. Christidi, P. S. Cooper, M. V. Diwan, J. S. Frank, T. Fujiwara, J. Hu, A. P. Ivashkin, D. E. Jaffe, S. Kabe, S. H. Kettell, M. M. Khabibullin, A. N. Khotjantsev, P. Kitching, M. Kobayashi, T. K. Komatsubara, A. Konaka, A. P. Kozhevnikov, Yu G. Kudenko, A. Kushnirenko, L. G. Landsberg, B. Lewis, K. K. Li, L. S. Littenberg, J. A. Macdonald, J. Mildenberger, O. V. Mineev, M. Miyajima, K. Mizouchi, V. A. Mukhin, N. Muramatsu, T. Nakano, M. Nomachi, T. Nomura, T. Numao, V. F. Obraztsov, K. Omata, D. I. Patalakha, S. V. Petrenko, R. Poutissou, E. J. Ramberg, G. Redlinger, Tamaki Yoshioka

    Physical Review Letters   93 ( 3 )   31801   2004.7

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    Language：English   Publishing type：Research paper (scientific journal)  

    Improved measurement of the K+->pi+nu(nu)over-bar branching ratio
    An additional event near the upper kinematic limit for K+-->pi(+)nu(nu) over bar has been observed by experiment E949 at Brookhaven National Laboratory. Combining previously reported and new data, the branching ratio is B(K+-->pi(+)nu(nu) over bar)=(1.47(-0.89)(+1.30))x10(-10) based on three events observed in the pion momentum region 211<P<229 MeV/c. At the measured central value of the branching ratio, the additional event had a signal-to-background ratio of 0.9.

    DOI： 10.1103/PhysRevLett.93.031801

  • Upgrade of the level-0 trigger system for BNL-E949 Reviewed

    T. Yoshioka, M. Nomachi, A. Artamanov, B. Bhuyan, J. S. Frank, T. Fujiwara, K. Higa, S. H. Kettell, T. K. Komatsubara, A. Konaka, A. Kozjevnikov, A. Kushnirenko, N. Muramatsu, T. Nakano, T. Nomura, S. Petrenko, R. Poutissou, G. Redlinger, T. Sekiguchi, T. Shinkawa, S. Sugimoto, T. Tsunemi

    IEEE Transactions on Nuclear Science   51 ( 3 I )   334 - 339   2004.6

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    Language：Others   Publishing type：Research paper (other academic)  

    A new programmable trigger board and digital mean-timer modules using complex programmable logic device have been introduced to the trigger system of the BNL-E949 experiment. The online dead time was reduced from 4.0&#37; to 1.7&#37; by introducing an on-chip prescaler to the programmable trigger board. The acceptance loss of the online photon veto was reduced from 4.9&#37; to 1.8&#37; by introducing the mean-timer modules.

    DOI： 10.1109/TNS.2004.828867

  • A beam test of PbWO<inf>4</inf> Cherenkov radiators Reviewed

    M. Kobayashi, S. Sugimoto, Y. Yoshimura, T. K. Komatsubara, K. Mimori, K. Omata, T. Sekiguchi, T. Tsunemi, T. Yoshioka, Y. Tamagawa, H. Shirasaka, T. Fujiwara, Y. Usuki, M. Ishii

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   484 ( 1-3 )   140 - 148   2002.5

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    Language：Others   Publishing type：Research paper (scientific journal)  

    PbWO heavily doped with trivalent rare-earth ions like La , Gd , Y , etc. has recently been proposed as an excellent new, heavy and radiation-hard Cherenkov radiator, and the upper limit of the remaining scintillation light yield (LY) was obtained from measurement of radioisotope γ-rays. Since then, we have made a quantitative study of the remaining scintillation LY using a 0.5-1 GeV/c π /p/d beam. Compared with a standard PbWO :Gd(80atppm) scintillator, the scintillation LY is quenched to 4.8&#37;, 6.0&#37;, and 11.6&#37; for La concentration of 8 at&#37;, La of 5 at&#37; and Gd of 3 at&#37;, respectively. The scintillation LY remaining in PbWO :La(8at&#37;) was as weak as 15&#37; of the Cherenkov LY for relativistic charged particles. © 2001 Elsevier Science B.V. All rights reserved. 4 4 4 3+ 3+ 3+ + 3+ 3+ 3+

    DOI： 10.1016/S0168-9002(01)02010-1

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Books

  • マーティン/ショー 素粒子物理学 原著第4版

    駒宮幸男,@川越清以,@吉岡瑞樹,神谷好郎,@織田勧,@末原大幹

    2020.3 

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    Language：Japanese  

Presentations

  • J-PARC Muon g-2/EDM Invited International conference

    @吉岡 瑞樹

    Workshop on Muon Physics at the Intensity and Precision Frontiers  2024.4 

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    Event date： 2024.4

    Language：English   Presentation type：Oral presentation (general)  

    Venue：北京   Country：China  

  • Muon g-2/EDM experiment at J-PARC Invited

    @吉岡瑞樹

    Higgs as a probe of new physics 2023  2023.6 

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    Event date： 2023.6

    Language：English   Presentation type：Oral presentation (general)  

    Venue：大阪大学   Country：Japan  

    ミュー粒子の異常磁気能率は、先行研究の測定値と素粒子標準模型の計算値の間にに4標準偏差の差が見られており、当該分野において大きな問題となっている。本講演ではミュー粒子の異常磁気能率を先行研究とは異なる手法で高精度測定を試みる新規実験について紹介する。

  • 次世代中性子技術を用いた高精度中性子寿命測定実験 Invited

    @吉岡瑞樹

    日本物理学会第76回年次大会  2021.3 

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    Event date： 2021.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：オンライン   Country：Japan  

    中性子の崩壊寿命は測定手法間に間に4標準偏差の差が見られており、当該分野において大きな問題となっている。本講演では中性子の崩壊寿命を従来とは異なる手法で高精度測定を試みる新規実験について紹介する。

  • Fundamental physics using neutron at J-PARC and accelerator-driven neutron source Invited

    吉岡瑞樹

    2019 Symposium on Nuclear Data  2019.11 

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    Event date： 2020.1

    Language：Japanese   Presentation type：Oral presentation (general)  

    Country：Japan  

  • Positron Tracking Detector for Muon g-2/EDM Experiment at J-PARC Invited International conference

    吉岡瑞樹

    The 3rd J-PARC Symposium  2019.9 

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    Event date： 2020.1

    Language：English   Presentation type：Oral presentation (general)  

    Venue：つくば国際会議場   Country：Japan  

  • J-PARCにおける新しい手法によるミュー粒子双極子能率精密測定実験 Invited

    吉岡瑞樹

    日本物理学会第74年次大会  2019.3 

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    Event date： 2019.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：福岡   Country：Japan  

    ミュー粒子の異常磁気能率の測定値と理論値の間に4標準偏差の差が見られており、当該分野において大きな問題となっている。本講演ではミュー粒子の異常磁気能率を従来とは全く異なる手法で高精度測定を試みる新規実験について紹介する。

  • Performance of the CALICE analogure calorimeters and tests of GEANT4 International conference

    Tamaki Yoshioka

    ICHEP2012  2012.7 

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    Presentation type：Oral presentation (general)  

    Venue：Melbourne   Country：Australia  

  • ILCの物理

    吉岡 瑞樹

    日本物理学会2013年秋季大会  2013.9 

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    Presentation type：Symposium, workshop panel (public)  

    Venue：高知大学  

  • Measurement of muon g-2/EDM at J-PARC Invited International conference

    Tamaki Yoshioka

    Fundamental Physics using Atoms 9  2017.1 

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    Presentation type：Oral presentation (general)  

    Venue：京都大学  

    ミューオンの異常磁気能率を従来とは全く異なる方法で精密に測定する実験計画が茨城県東海村の大強度要旨加速器施設にて進行中である。本講演では実験計画の現状について報告した。

  • Gravitational effects in muon/neutron experiments Invited

    吉岡 瑞樹

    加速器を用いた重力研究2017  2017.11 

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    Presentation type：Oral presentation (general)  

    Venue：KEK  

    低エネルギー中性子やミューオンは重力の効果を検証できる魅力的な試験粒子である。本講演ではこれまでの基本粒子による重力研究を概観した。研究会では将来の重力実験についても議論を行った。

  • A search for deviations from the inverse square law of gravity at nm range using a pulsed neutron beam Invited International conference

    Tamaki Yoshioka

    RCNP Workshop on Fundamental Physics using Neutrons and Atoms  2018.8 

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    Event date： 2018.8

    Language：English   Presentation type：Oral presentation (general)  

    Venue：大阪   Country：Japan  

  • 散乱による未知短距離力探索 Invited

    吉岡 瑞樹

    中性子物理研究会  2015.4 

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    Event date： 2015.4

    Presentation type：Oral presentation (general)  

    Venue：名古屋大学   Country：Japan  

  • J-PARCにおける中性子電気双極子能率測定実験計画III

    吉岡 瑞樹

    日本物理学会2011年秋季大会  2011.9 

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    Presentation type：Oral presentation (general)  

    Venue：弘前大学  

  • 重水素Diamond-Like Carbonの中性子反射率測定

    吉岡 瑞樹

    中性子制御デバイスとその応用IV  2012.2 

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    Presentation type：Oral presentation (general)  

    Venue：京都大学  

  • 中性子小角散乱を用いた未知中間力の探索

    吉岡 瑞樹

    中性子を用いた素粒子実験研究会  2012.3 

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    Presentation type：Oral presentation (general)  

    Venue：名古屋大学  

  • Summary - Calorimeter/Muon/DAQ International conference

    Tamaki Yoshioka

    ACFA12  2012.4 

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    Presentation type：Oral presentation (general)  

    Venue：Deagu   Country：Korea, Republic of  

  • The CALICE Si-W ECAL - physics prototype International conference

    Tamaki Yoshioka

    ACFA12  2012.4 

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    Presentation type：Oral presentation (general)  

    Venue：Deagu   Country：Korea, Republic of  

  • NOP UnPolブランチのまとめと今後

    吉岡 瑞樹

    中性子物理研究会  2012.11 

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    Presentation type：Oral presentation (general)  

    Venue：名古屋大学  

  • リニアコライダーにおけるヒッグス研究 Invited

    吉岡 瑞樹

    新学術領域「先端加速器LHCが切り拓くテラスケールの素粒子物理学」  2013.5 

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    Presentation type：Oral presentation (general)  

    Venue：名古屋大学  

  • 低エネルギー中性子で探る宇宙の謎 Invited

    吉岡 瑞樹

    第1回九大Tech Forum  2014.2 

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    Presentation type：Oral presentation (general)  

    Venue：ホテル日航東京  

  • ILCの物理

    吉岡 瑞樹

    ILC大学連携支援タスクフォースセミナー  2014.5 

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    Presentation type：Public lecture, seminar, tutorial, course, or other speech  

    Venue：新潟大学  

  • 低エネルギー中性子散乱を用いたナノメートルスケールでの重力逆２乗則検証実験 Invited

    吉岡 瑞樹

    第3回KMI分野横断セミナー「精密測定で迫る重力」  2015.3 

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    Presentation type：Public lecture, seminar, tutorial, course, or other speech  

    Venue：名古屋大学  

  • Measurement of muon g-2/EDM at J-PARC

    吉岡 瑞樹

    中性子と原子で探る基礎物理  2017.7 

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    Presentation type：Oral presentation (general)  

    Venue：大阪大学  

  • J-PARC muon and neutron experiments Invited

    吉岡 瑞樹

    ILC夏の合宿  2017.7 

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    Presentation type：Oral presentation (invited, special)  

    Venue：信州  

  • A Search for deviations from the inverse square law of gravity at nm range using a pulsed neutron beam International conference

    Tamaki Yoshioka

    Fundamental Physics using Atoms 10  2018.1 

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    Presentation type：Oral presentation (general)  

    Venue：名古屋大学  

  • Detector Overview Invited

    吉岡 瑞樹

    ILC夏の合宿  2020.9 

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    Language：English   Presentation type：Oral presentation (invited, special)  

    Venue：信州   Country：Japan  

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MISC

  • Analysis of Science Café Event Records in Fukuoka Prefecture : Focusing the continuity of Science Café

    MISHIMA Misako, KOBAYASHI Yoshihiko, YOSHIOKA Tamaki

    科学技術コミュニケーション   30   31 - 43   2022.1   （ ISSN:1881-8390 ）

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    Language：Japanese   Publisher：北海道大学 高等教育推進機構 オープンエデュケーションセンター 科学技術コミュニケーション教育研究部門（CoSTEP）  

    DOI： 10.14943/100748

    CiNii Books

    CiNii Research

    researchmap

  • J-PARC muon g-2/EDM experiment: Test of cooling system for silicon strip detector

    佐藤太希, 池野正弘, 池野正弘, 上野一樹, 上野一樹, 梅林恵祐, 岡崎佑太, 岡崎佑太, 岡村麗矢, 小川真治, 小川真治, 川越清以, 岸下徹一, 岸下徹一, 久米達哉, 高力孝, 高力孝, 齊藤直人, 佐々木修, 佐々木修, 佐藤伸彦, 佐藤優太郎, 佐藤優太郎, 庄子正剛, 庄子正剛, 調翔平, 末原大幹, 末原大幹, 鈴木純一, 須田利美, 清野義敬, 千代浩司, 千代浩司, 高富俊和, 田中真伸, 田中真伸, 東城順治, 東城順治, 西村昇一郎, 西村昇一郎, 福村省三, 藤田陽一, 藤田陽一, 本多佑記, 本多良太郎, 本多良太郎, 水取雅登, 三部勉, 三部勉, 山岡広, 山中隆志, 山中隆志, 矢村昂暉, 吉岡瑞樹, 吉岡瑞樹

    日本物理学会講演概要集(CD-ROM)   79 ( 1 )   2024   （ ISSN:2189-079X ）

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  • J-PARC muon g-2/EDM Experiment: Noise evaluation in experimental environment using positron tracker prototype modules

    梅林恵祐, 小川真治, 小川真治, 池野正弘, 池野正弘, 上野一樹, 上野一樹, 岡崎佑太, 岡崎佑太, 岡村麗矢, 川越清以, 岸下徹一, 岸下徹一, 久米達哉, 高力孝, 高力孝, 齊藤直人, 佐々木修, 佐々木修, 佐藤太希, 佐藤伸彦, 佐藤優太郎, 佐藤優太郎, 庄子正剛, 庄子正剛, 調翔平, 末原大幹, 末原大幹, 鈴木純一, 須田利美, 清野義敬, 千代浩司, 千代浩司, 高富俊和, 田中真伸, 田中真伸, 東城順治, 東城順治, 西村昇一郎, 西村昇一郎, 福村省三, 藤田陽一, 藤田陽一, 本多佑記, 本多良太郎, 本多良太郎, 水取雅登, 三部勉, 三部勉, 山岡広, 吉岡瑞樹, 吉岡瑞樹, 山中隆志, 山中隆志, 矢村昂暉

    日本物理学会講演概要集(CD-ROM)   79 ( 1 )   2024   （ ISSN:2189-079X ）

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  • Sensor alignment utilizing decay positron tracks for muon EDM search in J-PARC muon g-2/EDM experiment

    小川真治, 小川真治, 池野正弘, 池野正弘, 上野一樹, 上野一樹, 梅林恵祐, 岡崎佑太, 岡崎佑太, 岡村麗矢, 川越清以, 岸下徹一, 岸下徹一, 久米達哉, 高力孝, 高力孝, 齊藤直人, 佐々木修, 佐々木修, 佐藤太希, 佐藤伸彦, 佐藤優太郎, 佐藤優太郎, 庄子正剛, 庄子正剛, 調翔平, 末原大幹, 末原大幹, 鈴木純一, 須田利美, 清野義敬, 千代浩司, 千代浩司, 高富俊和, 田中真伸, 田中真伸, 東城順治, 東城順治, 西村昇一郎, 西村昇一郎, 福村省三, 藤田陽一, 藤田陽一, 本多佑記, 本多良太郎, 本多良太郎, 水取雅登, 三部勉, 三部勉, 山岡広, 山中隆志, 山中隆志, 矢村昂暉, 吉岡瑞樹, 吉岡瑞樹

    日本物理学会講演概要集(CD-ROM)   79 ( 1 )   2024   （ ISSN:2189-079X ）

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  • J-PARC muon g-2/EDM experiment: Construction and testing of gluing system for assembly of silicon strip detector modules

    水取雅登, 池野正弘, 池野正弘, 上野一樹, 上野一樹, 梅林恵祐, 岡崎佑太, 岡崎佑太, 小川真治, 小川真治, 岡村麗矢, 川越清以, 岸下徹一, 岸下徹一, 久米達哉, 高力孝, 高力孝, 齊藤直人, 佐々木修, 佐々木修, 佐藤太希, 佐藤伸彦, 佐藤優太郎, 佐藤優太郎, 庄子正剛, 庄子正剛, 調翔平, 末原大幹, 末原大幹, 鈴木純一, 須田利美, 清野義敬, 千代浩司, 千代浩司, 高富俊和, 田中真伸, 田中真伸, 東城順治, 東城順治, 西村昇一郎, 西村昇一郎, 福村省三, 藤田陽一, 藤田陽一, 本多佑記, 本多良太郎, 本多良太郎, 三部勉, 山岡広, 山中隆志, 山中隆志, 矢村昂暉, 吉岡瑞樹, 吉岡瑞樹

    日本物理学会講演概要集(CD-ROM)   79 ( 1 )   2024   （ ISSN:2189-079X ）

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  • Angular correlation between neutron spin and γ-ray mementum in <sup>139</sup>La(n,γ)<sup>140</sup>La<sup>*</sup> reactions

    奥泉舞桜, 奥平琢也, 奥平琢也, 伊東佑起, 遠藤駿典, 遠藤駿典, 奥隆之, 亀田健斗, 北口雅暁, 木村敦, 酒井健二, 嶋達志, 清水裕彦, 高田秀佐, 藤家拓大, 藤家拓大, 藤岡宏之, 吉岡瑞樹, 吉川大幹

    日本物理学会講演概要集(CD-ROM)   78 ( 1 )   2023   （ ISSN:2189-079X ）

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  • Fundamental study of compound nuclei and T-violation search experiment

    奥平琢也, 奥平琢也, 伊東佑起, 井出郁央, 遠藤駿典, 遠藤駿典, 奥隆之, 奥泉舞桜, 後藤優, 亀田健斗, 河村しほり, 北口雅暁, 木村敦, 中部倫太郎, 酒井健二, 嶋達志, 清水裕彦, 南部太郎, 西村岳太郎, 藤家拓大, 藤家拓大, 藤岡宏之, 吉岡瑞樹, 吉川大幹

    日本物理学会講演概要集(CD-ROM)   78 ( 1 )   2023   （ ISSN:2189-079X ）

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  • J-PARC muon g - 2/EDM experiment: Result of quality inspection of readout ASICs of the silicon strip detector

    山中隆志, 山中隆志, 池野正弘, 池野正弘, 上野一樹, 上野一樹, 梅林恵祐, 岡崎佑太, 岡崎佑太, 岡村麗矢, 小川真治, 小川真治, 川越清以, 岸下徹一, 岸下徹一, 久米達哉, 高力孝, 高力孝, 齊藤直人, 佐々木修, 佐々木修, 佐藤太希, 佐藤伸彦, 佐藤優太郎, 佐藤優太郎, 庄子正剛, 庄子正剛, 末原大幹, 末原大幹, 鈴木純一, 須田利美, 清野義敬, 千代浩司, 千代浩司, 高富俊和, 田中真伸, 田中真伸, 東城順治, 東城順治, 西村昇一郎, 西村昇一郎, 藤田陽一, 藤田陽一, 本多佑記, 本多良太郎, 本多良太郎, 水取雅登, 三部勉, 三部勉, 山岡広, 矢村昂暉, 吉岡瑞樹, 吉岡瑞樹

    日本物理学会講演概要集(CD-ROM)   78 ( 2 )   2023   （ ISSN:2189-079X ）

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  • J-PARC muon g-2/EDM experiment: Testing of FPGA readout board cooling system of silicon strip detector

    佐藤太希, 池野正弘, 池野正弘, 上野一樹, 上野一樹, 梅林恵祐, 岡崎佑太, 岡崎佑太, 岡村麗矢, 小川真治, 小川真治, 川越清以, 岸下徹一, 岸下徹一, 久米達哉, 高力孝, 高力孝, 齊藤直人, 佐々木修, 佐々木修, 佐藤伸彦, 佐藤優太郎, 佐藤優太郎, 庄子正剛, 庄子正剛, 末原大幹, 末原大幹, 鈴木純一, 須田利美, 清野義敬, 千代浩司, 千代浩司, 高富俊和, 田中真伸, 田中真伸, 東城順治, 東城順治, 西村昇一郎, 西村昇一郎, 藤田陽一, 藤田陽一, 本多佑記, 本多良太郎, 本多良太郎, 水取雅登, 三部勉, 三部勉, 山岡広, 山中隆志, 山中隆志, 矢村昂暉, 吉岡瑞樹, 吉岡瑞樹

    日本物理学会講演概要集(CD-ROM)   78 ( 2 )   2023   （ ISSN:2189-079X ）

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  • Development of a board to distribute clock and trigger signals in J-PARC muon g-2/EDM experiment

    岡崎佑太, 岡崎佑太, 青柳泰平, 池野正弘, 池野正弘, 上野一樹, 上野一樹, 梅林恵祐, 岡村麗矢, 小川真治, 小川真治, 川越清以, 岸下徹一, 岸下徹一, 久米達哉, 高力孝, 高力孝, 齊藤直人, 佐々木修, 佐々木修, 佐藤伸彦, 佐藤優太郎, 佐藤優太郎, 庄子正剛, 庄子正剛, 末原大幹, 末原大幹, 鈴木純一, 須田利美, 清野義敬, 千代浩司, 千代浩司, 高富俊和, 田中真伸, 田中真伸, 塚田暁, 東城順治, 東城順治, 西村昇一郎, 西村昇一郎, 藤田陽一, 藤田陽一, 本多佑記, 本多良太郎, 本多良太郎, 三部勉, 三部勉, 山岡広, 山中隆志, 山中隆志, 吉岡瑞樹, 吉岡瑞樹

    日本物理学会講演概要集(CD-ROM)   78 ( 1 )   2023   （ ISSN:2189-079X ）

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  • J-PARC muon g-2/EDM experiment: Optimization of data readout of front-end board with 2 FPGAs

    岡村麗矢, 池野正弘, 池野正弘, 上野一樹, 上野一樹, 梅林恵祐, 岡崎佑太, 岡崎佑太, 小川真治, 小川真治, 川越清以, 岸下徹一, 岸下徹一, 久米達哉, 高力孝, 高力孝, 齊藤直人, 佐々木修, 佐々木修, 佐藤太希, 佐藤伸彦, 佐藤優太郎, 佐藤優太郎, 庄子正剛, 庄子正剛, 末原大幹, 末原大幹, 鈴木純一, 須田利美, 清野義敬, 千代浩司, 千代浩司, 高富俊和, 田中真伸, 田中真伸, 東城順治, 東城順治, 西村昇一郎, 西村昇一郎, 藤田陽一, 藤田陽一, 本多佑記, 本多良太郎, 本多良太郎, 水取雅登, 三部勉, 三部勉, 山岡広, 山中隆志, 山中隆志, 矢村昂暉, 吉岡瑞樹, 吉岡瑞樹

    日本物理学会講演概要集(CD-ROM)   78 ( 2 )   2023   （ ISSN:2189-079X ）

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  • Determination of the partial neutron width of 0.88 eV p-wave resonance of <sup>81</sup>Br for study of the systematics in parity-mixing nuclear matrix elements

    吉川大幹, 遠藤駿典, 遠藤駿典, 奥平琢也, 奥平琢也, 河村しほり, 北口雅暁, 木村敦, 酒井健二, 嶋達志, 清水裕彦, 高田秀佐, 西村岳太郎, 藤岡宏之, 吉岡瑞樹

    日本物理学会講演概要集(CD-ROM)   78 ( 1 )   2023   （ ISSN:2189-079X ）

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  • Derivation of neutron partial width of 3.91 eV p-wave resonance in <sup>105</sup>Pd(n,γ) <sup>106</sup>Pd reaction

    吉川大幹, 遠藤駿典, 遠藤駿典, 奥平琢也, 奥平琢也, 河村しほり, 北口雅暁, 木村敦, 酒井健二, 嶋達志, 清水裕彦, 高田秀佐, 藤岡宏之, 吉岡瑞樹

    日本物理学会講演概要集(CD-ROM)   77 ( 2 )   2022   （ ISSN:2189-079X ）

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  • Measurement of the circular polarization of γ-rays from the <sup>139</sup>La(n,γ) <sup>140</sup>La reaction

    遠藤駿典, 遠藤駿典, 奥平琢也, 亀田健斗, 河村しほり, 北口雅暁, 木村敦, 酒井健二, 嶋達志, 清水裕彦, 高田秀佐, 藤岡宏之, 吉岡瑞樹, 吉川大幹

    日本物理学会講演概要集(CD-ROM)   77 ( 2 )   2022   （ ISSN:2189-079X ）

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  • T-violation search using compound nuclei-measurement of the spin-dependent neutron absorption cross section with polarized nuclei-

    奥平琢也, 奥平琢也, 石角元志, 伊東佑起, 井出郁央, 遠藤駿典, 遠藤駿典, 奥隆之, 奥隆之, 河村しほり, 神原理, 亀田健斗, 北口雅暁, 木村敦, 後藤優, 小林龍珠, 酒井健二, 篠原武尚, 嶋達志, 清水裕彦, 高田秀佐, 高田秀佐, 高橋慎吾, 高橋慎吾, 高橋竜太, 中部倫太郎, 広田克也, 藤家拓大, 藤家拓大, 土川雄介, 藤岡宏之, 吉岡瑞樹, 吉川大幹

    日本物理学会講演概要集(CD-ROM)   77 ( 2 )   2022   （ ISSN:2189-079X ）

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  • Plan for the T-violation search using compound nuclei and measurement of the spin-dependent neutron absorption cross section with polarized nuclei

    奥平琢也, 奥平琢也, 安部亮太, 石崎貢平, 伊東佑起, 遠藤駿典, 遠藤駿典, 奥隆之, 亀田健斗, 北口雅暁, 木村敦, 酒井健二, 嶋達志, 清水裕彦, 高田秀佐, 広田克也, 藤家拓大, 藤家拓大, 藤岡宏之, 吉岡瑞樹, 吉川大幹

    日本物理学会講演概要集(CD-ROM)   77 ( 1 )   2022   （ ISSN:2189-079X ）

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  • Measurement of σ<sub>n</sub>・k<sub>γ</sub> angular dependent term of <sup>139</sup>La(n,γ)<sup>140</sup> La reaction for polarized neutrons

    安部亮太, 石崎貢平, 伊東佑起, 遠藤駿典, 遠藤駿典, 奥隆之, 奥平琢也, 亀田健斗, 北口雅暁, 木村敦, 酒井健二, 嶋達志, 清水裕彦, 高田秀佐, 長谷川拓郎, 広田克也, 藤家拓大, 藤家拓大, 藤岡宏之, 吉岡瑞樹, 吉川大幹

    日本物理学会講演概要集(CD-ROM)   77 ( 1 )   2022   （ ISSN:2189-079X ）

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  • Development of the polarimeter for circular polarization measurement of gamma-rays emitted from neutron capture reactions.

    遠藤駿典, 遠藤駿典, 安部亮太, 石崎貢平, 伊東佑起, 奥隆之, 奥平琢也, OMER Mohamed, 亀田健斗, 河村しほり, 北口雅暁, 木村敦, 酒井健二, 静間俊行, 嶋達志, 清水裕彦, 杉田健人, 全炳俊, 平義隆, 高田秀佐, 広田克也, 藤家拓大, 藤家拓大, 藤岡宏之, 吉岡瑞樹, 吉川大幹

    日本物理学会講演概要集(CD-ROM)   77 ( 1 )   2022   （ ISSN:2189-079X ）

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  • The angular dependence of the cross section of <sup>115</sup>In(n, γ) reaction toward a search for time-reversal violation using an indium target.

    高田秀佐, 安部亮太, 石崎貢平, 伊東佑起, 遠藤駿典, 遠藤駿典, 奥隆之, 奥平琢也, 奥平琢也, 亀田健斗, 北口雅暁, 木村敦, 酒井健二, 嶋達志, 清水裕彦, 広田克也, 藤家拓大, 藤家拓大, 藤岡宏之, 吉岡瑞樹, 吉川大幹

    日本物理学会講演概要集(CD-ROM)   77 ( 1 )   2022   （ ISSN:2189-079X ）

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  • Prompt γ-ray measurement from the neutron capture reaction of Pd isotopes in the eV energy range

    吉川大幹, 安部亮太, 石崎貢平, 伊東佑起, 遠藤駿典, 遠藤駿典, 奥平琢也, 奥平琢也, 亀田健斗, 北口雅暁, 木村敦, 酒井健二, 嶋達志, 清水裕彦, 高田秀佐, 中井飛翔, 広田克也, 藤家拓大, 藤家拓大, 藤岡宏之, 吉岡瑞樹

    日本物理学会講演概要集(CD-ROM)   77 ( 1 )   2022   （ ISSN:2189-079X ）

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  • J-PARC muon g-2/EDM experiment: Quality inspection status of readout ASICs of the silicon strip detector

    山中隆志, 山中隆志, 青柳泰平, 池野正弘, 池野正弘, 上野一樹, 上野一樹, 梅林恵祐, 岡崎佑太, 岡崎佑太, 小川真治, 小川真治, 川越清以, 岸下徹一, 岸下徹一, 久米達哉, 高力孝, 高力孝, 齊藤直人, 佐々木修, 佐々木修, 佐藤伸彦, 佐藤優太郎, 佐藤優太郎, 庄子正剛, 庄子正剛, 末原大幹, 末原大幹, 須田利美, 清野義敬, 千代浩司, 千代浩司, 高富俊和, 田中真伸, 田中真伸, 塚田暁, 東城順治, 東城順治, 西村昇一郎, 西村昇一郎, 藤田陽一, 藤田陽一, 本多佑記, 本多良太郎, 本多良太郎, 三部勉, 三部勉, 吉岡瑞樹, 吉岡瑞樹

    日本物理学会講演概要集(CD-ROM)   77 ( 2 )   2022   （ ISSN:2189-079X ）

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  • J-PARC muon g-2/EDM experiment: Quality inspection system for readout ASICs of the silicon strip detector

    山中隆志, 山中隆志, 青柳泰平, 池野正弘, 池野正弘, 上野一樹, 上野一樹, 牛澤昂大, 岡崎佑太, 岡崎佑太, 小川真治, 小川真治, 川越清以, 岸下徹一, 岸下徹一, 久米達哉, 高力孝, 高力孝, 齊藤直人, 佐々木修, 佐々木修, 佐藤伸彦, 佐藤優太郎, 佐藤優太郎, 庄子正剛, 庄子正剛, 末原大幹, 末原大幹, 須田利美, 清野義敬, 千代浩司, 千代浩司, 高富俊和, 田中真伸, 田中真伸, 塚田暁, 東城順治, 東城順治, 西村昇一郎, 西村昇一郎, 藤田陽一, 藤田陽一, 本多佑記, 本多良太郎, 本多良太郎, 三部勉, 三部勉, 吉岡瑞樹, 吉岡瑞樹, LEE W.

    日本物理学会講演概要集(CD-ROM)   77 ( 1 )   2022   （ ISSN:2189-079X ）

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Professional Memberships

  • 日本サイエンスコミュニケーション協会

  • 日本中性子科学会

  • 高エネルギー物理学研究者会議

  • 日本物理学会

Committee Memberships

  • 日本物理学会   九州支部委員   Domestic

    2019.4 - 2020.3   

  • 高エネルギー物理学研究者会議   将来計画検討委員   Domestic

    2016.1 - 2019.9   

  • 日本物理学会   素粒子実験領域運営委員   Domestic

    2013.10 - 2014.9   

  • 日本物理学会   九州支部委員   Domestic

    2013.4 - 2014.3   

Academic Activities

  • 組織委員

    研究用原子炉を用いた原子核素粒子物理学III  （ Japan ） 2024.1

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    Type：Competition, symposium, etc. 

  • Scientific Organizing Committee International contribution

    Symposium of the US-JAPAN Science and Technology Cooperation Program  （ Hawaii UnitedStatesofAmerica ） 2023.5

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    Type：Competition, symposium, etc. 

    Number of participants：60

  • 組織委員

    研究用原子炉を用いた原子核素粒子物理学II  （ Japan ） 2023.3

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    Type：Competition, symposium, etc. 

  • 組織委員

    中性子と原子で探る基礎物理  （ Japan ） 2022.8

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    Type：Competition, symposium, etc. 

  • 組織委員

    研究用原子炉を用いた原子核素粒子物理学  （ Japan ） 2022.5

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    Type：Competition, symposium, etc. 

    Number of participants：120

  • Screening of academic papers

    Role(s)： Peer review

    2022

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    Type：Peer review 

    Number of peer-reviewed articles in foreign language journals：1

  • 組織委員

    ILC夏の合宿2021  （ Japan ） 2021.9

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    Type：Competition, symposium, etc. 

  • 座長

    日本物理学会  （ Japan ） 2021.3

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    Type：Competition, symposium, etc. 

  • Screening of academic papers

    Role(s)： Peer review

    2021

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    Type：Peer review 

    Proceedings of domestic conference Number of peer-reviewed papers：1

  • 座長

    日本物理学会  （ Japan ） 2020.9

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    Type：Competition, symposium, etc. 

  • 座長

    日本物理学会  （ Japan ） 2020.3

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    Type：Competition, symposium, etc. 

  • Screening of academic papers

    Role(s)： Peer review

    2020

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    Type：Peer review 

    Number of peer-reviewed articles in foreign language journals：1

    Number of peer-reviewed articles in Japanese journals：1

  • 現地組織委員 International contribution

    Calorimeter for the High Energy Frontier 2019 (CHEF2019)  （ Japan ） 2019.11

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    Type：Competition, symposium, etc. 

  • 議長・座長 International contribution

    The 3rd J-PARC symposium  （ Japan ） 2019.9

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    Type：Competition, symposium, etc. 

  • 現地組織委員 International contribution

    The 3rd International Conference on Charged Lepton Flavor Violation  （ Japan ） 2019.6

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    Type：Competition, symposium, etc. 

  • 実行委員

    日本物理学会第74回年次大会  （ Japan ） 2019.3

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    Type：Competition, symposium, etc. 

  • Screening of academic papers

    Role(s)： Peer review

    2019

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    Type：Peer review 

    Number of peer-reviewed articles in foreign language journals：2

  • 座長

    日本物理学会  （ Japan ） 2018.9

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    Type：Competition, symposium, etc. 

  • 現地組織委員 International contribution

    Asian Linear Collider Workshop 2018 (ALCW2018)  （ Japan ） 2018.5 - 2019.6

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    Type：Competition, symposium, etc. 

  • 座長

    日本物理学会  （ Japan ） 2018.3

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    Type：Competition, symposium, etc. 

  • Screening of academic papers

    Role(s)： Peer review

    2018

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    Type：Peer review 

    Number of peer-reviewed articles in foreign language journals：1

  • 座長

    日本物理学会  （ Japan ） 2017.9

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    Type：Competition, symposium, etc. 

  • 座長

    日本物理学会  （ Japan ） 2017.3

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    Type：Competition, symposium, etc. 

  • 座長

    日本物理学会  （ Japan ） 2016.3

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    Type：Competition, symposium, etc. 

  • 世話人

    第5回ILC夏の合宿  （ Japan ） 2015.7

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    Type：Competition, symposium, etc. 

  • Calorimetry/Muon systems session convener International contribution

    The 2014 International Workshop on Future Linear Colliders (LCWS2014)  （ Belgrade ） 2014.10

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    Type：Competition, symposium, etc. 

  • Chair of Calorimeter session convener International contribution

    The 2013 International Workshop on Future Linear Colliders (LCWS2013)  （ Japan ） 2013.11

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    Type：Competition, symposium, etc. 

  • 座長（Chairmanship） International contribution

    The 2013 International Workshop on Future Linear Colliders (LCWS2013)  （ Japan ） 2013.11

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    Type：Competition, symposium, etc. 

  • 座長（Chairmanship）

    日本物理学会  （ Japan ） 2013.9

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    Type：Competition, symposium, etc. 

  • 座長（Chairmanship） International contribution

    CALICE meeting  （ Annecy France ） 2013.9

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    Type：Competition, symposium, etc. 

  • 世話人

    第４回ILC夏の合宿  （ Japan ） 2013.7

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    Type：Competition, symposium, etc. 

  • Top/QCD session convener International contribution

    The 2012 International Workshop on Future Linear Colliders (LCWS2012)  （ Arlington UnitedStatesofAmerica ） 2012.10 - 2013.10

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    Type：Competition, symposium, etc. 

  • 座長（Chairmanship） International contribution

    The 2012 International Workshop on Future Linear Colliders (LCWS2012)  （ UnitedStatesofAmerica ） 2012.10

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    Type：Competition, symposium, etc. 

  • 不明 International contribution

    The First Asia-Europe-pacific School of High-energy Physics  （ Japan ） 2012.10

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    Type：Competition, symposium, etc. 

  • 世話人

    第３回ILC夏の合宿  （ Japan ） 2012.7

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    Type：Competition, symposium, etc. 

  • Local Organizing Committee International contribution

    ILD Workshop 2012  （ Japan ） 2012.5

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    Type：Competition, symposium, etc. 

  • 座長（Chairmanship） International contribution

    CALICE meeting  （ Japan ） 2012.3

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    Type：Competition, symposium, etc. 

  • Top/QCD session convener International contribution

    The International Workshop for Future Linear Collider (LCWS2011)  （ Granada Spain ） 2011.9

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    Type：Competition, symposium, etc. 

  • 座長（Chairmanship） International contribution

    The 2011 International Workshop on Future Linear Colliders (LCWS2011)  （ Granada Spain ） 2011.9

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    Type：Competition, symposium, etc. 

  • 座長（Chairmanship） International contribution

    5th ILD meeting  （ Paris France ） 2011.5

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    Type：Competition, symposium, etc. 

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Research Projects

  • Search for new interaction in the sub-micron range via neutron scattering off hydrogen-absorbed nano-particles

    Grant number：23K22502  2022.4 - 2026.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    嶋 達志, 三島 賢二, 吉岡 瑞樹, 北口 雅暁

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    Grant type：Scientific research funding

    重力は、弱い重力場の近似では逆二乗則にしたがうと考えられているが、数ミクロン以下の距離ではコンパクト化された余剰次元の効果により、逆二乗則からのずれが生じ、重力様の未知相互作用として現れ得る。そのような未知相互作用は、約100nm以上の領域では ねじり秤等を用いて精密な探索が行われているが、100nm以下では分子間力が深刻なバックグラウンドとなる。
    本研究は、分子間力の影響を受けない中性子小角散乱を用い、さらに標的物質の核散乱長を測定中にリアルタイムで精密に制御することで、核力の影響をも極限まで低減する。これによって100nm以下での感度を3～5桁改善し、未踏の領域での未知相互作用探索を行う。

    CiNii Research

  • Solving the Neutron Lifetime Puzzle -Advanced Event Selection Using Polarized Neutron Decay Asymmetry-

    Grant number：22H00140  2022.4 - 2025.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    三島 賢二, 岩下 芳久, 不破 康裕, 猪野 隆, 吉岡 瑞樹, 北口 雅暁

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    Grant type：Scientific research funding

    中性子は880.2+/-1.0秒で陽子、電子、反ニュートリノの3体にβ崩壊する。その寿命は素粒子、原子核、天文分野における重要な値であるが、現在報告されている中性子寿命はその測定手法により8.5秒(4.0σ)の大きな乖離があり、“中性子寿命問題”と呼ばれている。この乖離が単なる実験の間違いなのか、あるいは未知の現象によるものなのか、大きな議論を呼んでいる。本申請はJ-PARC大強度パルス中性子を用い、中性子崩壊からの電子を測定するという新しい手法により、この問題の解決を目指す。中性子崩壊からの電子の放出方向は中性子の偏極方向に偏りを持つため、中性子偏極を制御することで実験の高度化を行う。

    CiNii Research

  • 中性子寿命問題の解決-偏極中性子崩壊非対称を用いた事象選別の高度化-

    2022 - 2024

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • 水素吸蔵ナノ粒子・中性子散乱によるサブミクロン領域での未知相互作用の探索

    2022 - 2024

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • ソレノイド磁場で実現する新しい手法による中性子寿命問題の解明

    Grant number：21H04475  2021 - 2024

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    吉岡 瑞樹, 三島 賢二, 槇田 康博, 北口 雅暁

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    Authorship：Principal investigator  Grant type：Scientific research funding

    中性子は最も単純な原子核の一つであり、およそ900秒で電子、陽子、反ニュートリノに崩壊する。その崩壊寿命は素粒子標準理論の精密検証において不可欠なパラメータであるが、測定手法間に3.8標準偏差の有意な乖離が見られている。この乖離は「中性子寿命問題」と呼ばれており、未知の現象に起因する可能性が議論されている。我々は茨城県東海村の陽子加速器施設J-PARCの大強度中性子ビームを用いて、既存の手法とは異なる測定方法により中性子寿命を高精度で決定する実験を提案している。本研究は、研究期間内に0.1%の精度で中性子寿命を測定し、中性子寿命問題が未知の現象に起因するか否かに決着をつけることを目的とする。

    CiNii Research

  • Super high precision measurements of anomalous magnetic moment and electric dipole moment of muon

    Grant number：20H05625  2020 - 2025

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Specially Promoted Research

    三部 勉, 吉岡 瑞樹, 近藤 恭弘, 早坂 圭司, 飯沼 裕美, 佐々木 憲一, 飯嶋 徹, 大谷 将士

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

    多くの実験事実と、数学的な整合性を基盤に築き上げられた素粒子標準理論は、様々な素粒子現象を定量的に説明する極めて堅牢な理論である。しかしながら、近年の研究により必然的に素粒子標準理論を超える新しい物理法則（新物理）の存在が要請される。ミュオン異常磁気能率(g－2)は素粒子標準理論よりも大きな値を持つことが示唆されており、新しい測定が求められている。本研究ではJ-PARCの大強度陽子ビームの特徴を最大限に生かし、新しい実験技術と組み合わせることにより、従来とは異なる研究手法によりミュオンg－2および電気双極子能率(EDM)の超精密測定を行い、素粒子標準理論と比較することで新物理の存在に迫る。

    CiNii Research

  • J-PARCパルス中性子ビームを用いた中性子寿命測定：中性子寿命問題の解明

    Grant number：19H00690  2019 - 2021

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    三島 賢二, 関場 大一郎, 吉岡 瑞樹, 山下 了, 角野 浩史, 北口 雅暁

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

    中性子は最も単純な原子核の一つであり、880.2+/-1.0秒で陽子、電子、反ニュートリノの3体にβ崩壊する。その寿命は素粒子、原子核、天文分野における重要なパラメーターのうちの一つであるが、現在報告されている中性子寿命はその測定手法により8.6秒(4.0σ)と大きく乖離しており、“中性子寿命問題 (Neutron Lifetime Puzzle)”と呼ばれている。この乖離が単なる実験の間違いなのか、あるいは未知の現象によるものなのか議論を呼んでいる。
    本申請はJ-PARC大強度パルス中性子を用いた中性子寿命測定実験を遂行し、この問題の解決を目指す。

    CiNii Research

  • 中性子・ナノ粒子散乱による未知相互作用の探索

    2019 - 2020

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • ソレノイド磁場と新型ガス検出器を組み合わせた高精度中性子寿命測定実験

    Grant number：18H01231  2018 - 2020

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship：Principal investigator  Grant type：Scientific research funding

  • 時間反転対称性の破れの探索のための、偏極中性子による原子核反応の精密測定

    2017 - 2019

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • 中性子寿命高精度測定実験のための新型ガス検出器の開発

    2017

    QRプログラム(わかばチャレンジ)

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    Authorship：Principal investigator  Grant type：On-campus funds, funds, etc.

  • J-PARC大強度パルス中性子を用いた中性子寿命の精密測定

    2016 - 2018

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • 世界最高精度での中性子寿命測定実験のための新型ガス検出器の開発

    2016 - 2017

    住友財団基礎科学助成金

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    Authorship：Principal investigator  Grant type：On-campus funds, funds, etc.

  • ミュオン異常磁気能率の精密測定による新物理法則の探索

    2015 - 2019

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (S)

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • 低エネルギー中性子散乱を用いたナノメートルスケールでの重力逆2乗則検証実験

    Grant number：25800152  2013 - 2014

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (B)

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    Authorship：Principal investigator  Grant type：Scientific research funding

  • 次世代中性子電気双極子能率探索実験のための新型中性子反射鏡の開発研究

    Grant number：23840030  2011 - 2012

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Research Activity start-up

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    Authorship：Principal investigator  Grant type：Scientific research funding

  • 中性子・ナノ粒子散乱による未知相互作用の探索

    Grant number：19H01927 

    嶋 達志, 三島 賢二, 吉岡 瑞樹, 北口 雅暁

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    Grant type：Scientific research funding

    重力相互作用は、古典論の枠内では一般相対性理論によって記述されるが、重力場の量子論は研究の途上である。現時点では超弦理論やループ量子重力理論などが理論の候補と考えられているが、いずれも微小なスケールでの時空構造に修正を加える点が共通である。修正された時空構造のもとでは、微小距離での重力の法則が逆二乗則からずれる可能性がある。本研究は、ナノ粒子標的と中性子との干渉性散乱を利用して、物体間距離が100nm以下の領域で従来の実験的制限を飛躍的に超える感度での未知相互作用の探索を行い、重力の逆二乗則の検証を実現する。これによって重力を含む統一理論に対する実験的情報を取得する。

    CiNii Research

▼display all

Educational Activities

  • 研究室学生のゼミ及び研究指導

Class subject

  • 基礎物理実験学・同実験B

    2024.12 - 2025.2   Winter quarter

  • 原子核・高エネルギー実験学B

    2024.12 - 2025.2   Winter quarter

  • 基礎物理実験学・同実験A

    2024.10 - 2024.12   Fall quarter

  • 原子核・高エネルギー実験学A

    2024.10 - 2024.12   Fall quarter

  • 身の回りの物理学Ｂ

    2024.6 - 2024.8   Summer quarter

  • 基礎物理実験学・同実験B

    2023.12 - 2024.2   Winter quarter

  • 原子核・高エネルギー実験学

    2023.10 - 2024.3   Second semester

  • 基礎物理実験学・同実験A

    2023.10 - 2023.12   Fall quarter

  • 身の回りの物理学Ｂ

    2023.6 - 2023.8   Summer quarter

  • 原子核・高エネルギー実験学

    2022.10 - 2023.3   Second semester

  • 数値計算法

    2022.10 - 2023.3   Second semester

  • 原子核・高エネルギー実験学

    2021.10 - 2022.3   Second semester

  • 数値計算法

    2021.10 - 2022.3   Second semester

  • 原子核・高エネルギー実験学

    2020.10 - 2021.3   Second semester

  • 数値計算法

    2020.10 - 2021.3   Second semester

  • 原子核・高エネルギー実験学

    2019.10 - 2020.3   Second semester

  • 数値計算法

    2019.10 - 2020.3   Second semester

  • 原子核・高エネルギー実験学

    2018.10 - 2019.3   Second semester

  • 数値計算法

    2018.10 - 2019.3   Second semester

  • 原子核・高エネルギー実験学

    2017.10 - 2018.3   Second semester

  • 数値計算法

    2017.10 - 2018.3   Second semester

  • 原子核・高エネルギー実験学

    2016.10 - 2017.3   Second semester

  • 数値計算法

    2016.10 - 2017.3   Second semester

  • 原子核・高エネルギー実験学

    2015.10 - 2016.3   Second semester

  • 数値計算法

    2015.10 - 2016.3   Second semester

  • 原子核・高エネルギー実験学

    2014.10 - 2015.3   Second semester

  • 数値計算法

    2014.10 - 2015.3   Second semester

  • 原子核・高エネルギー実験学

    2013.10 - 2014.3   Second semester

  • 自然科学総合実験

    2013.4 - 2013.9   First semester

  • 基礎物理実験学

    2012.10 - 2013.3   Second semester

  • 自然科学総合実験

    2012.4 - 2012.9   First semester

  • 基礎物理実験学

    2011.10 - 2012.3   Second semester

  • 自然科学総合実験

    2011.4 - 2011.9   First semester

▼display all

FD Participation

  • 2021.3   Role：Participation   Title：【物理学FD】ハイブリッド講義の実践例と講義活性化

    Organizer：[Undergraduate school/graduate school/graduate faculty]

  • 2011.10   Role：Participation   Title：物理学部門FD

    Organizer：Undergraduate school department

  • 2011.4   Role：Participation   Title：第１回全学ＦＤ（新任教員の研修）

    Organizer：University-wide

Visiting, concurrent, or part-time lecturers at other universities, institutions, etc.

  • 2022  山形大学  Classification:Part-time lecturer 

  • 2019  茨城大学  Classification:Intensive course  Domestic/International Classification:Japan 

    Semester, Day Time or Duration：後期：2019年12月6日

Social Activities

  • 第100回サイエンスカフェ＠ふくおか「目の大切さ」～視力が低下する病気とその治療～

    九州大学  ハイブリッド  2024.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍以降は、定期的にオンライン開催もしている。第１００回記念には石橋総長にご登壇いただいた。

  • 第99回サイエンスカフェ＠ふくおか「デザインって何？」～これがデザイン！、こうやってデザイン！、これもデザイン！～

    九州大学  オンライン  2024.1

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第98回サイエンスカフェ＠ふくおか「二酸化炭素の循環の謎に迫る！」～二酸化炭素は燃料になり得るのか～

    九州大学  オンライン  2023.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第97回サイエンスカフェ＠ふくおか「超元気な分子の謎に迫る！」～光エネルギーを手にした分子の底力～

    九州大学  BIZCOLI  2023.10

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第96回サイエンスカフェ＠ふくおか「砂漠の謎に迫る！」～乾燥地の自然と人々～

    九州大学  BIZCOLI  2023.9

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第95回サイエンスカフェ＠ふくおか「肺の謎に迫る！」～シミュレーションから形作りを解き明かす～

    九州大学  BIZCOLI  2023.8

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第94回サイエンスカフェ＠ふくおか「ナノ医薬とは何か！」～工学部で医薬品開発～

    九州大学  BIZCOLI  2023.6

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第93回サイエンスカフェ＠ふくおか「昆虫のはねの謎に迫る！」～3億年前から使われている折りたたみ～

    九州大学  BIZCOLI  2023.5

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第92回サイエンスカフェ＠ふくおか「未来の公共空間の謎に迫る！」～みんなでつくるオープンスペース～

    九州大学  オンライン  2023.4

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • ワークショップコレクション in 福岡／小学生を対象とした講演

    2023.3

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    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 第91回サイエンスカフェ＠ふくおか「アート×農の魅力に迫る！」～農村社会にアプローチする芸術活動～

    九州大学  オンライン  2022.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第90回サイエンスカフェ＠ふくおか「メタノールエネルギーキャリアの謎に迫る！」～2050 年カーボンニュートラルは達成出来るのか！？～

    九州大学  オンライン  2022.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 令和4年度 京築未来の地域リーダー育成プログラム／中学生を対象とした講演

    2022.12

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    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 第89回サイエンスカフェ＠ふくおか「世界遺産、どこまで知っていますか？」～「水」を通してみる世界遺産の価値～

    九州大学  フジイギャラリー  2022.10

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第88回サイエンスカフェ＠ふくおか「バイオ・フードラボ」から考える「海」と「食」

    九州大学  大橋キャンパス  2022.7

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第87回サイエンスカフェ＠ふくおか「海に潜む寄生虫の謎に迫る！」～魚とヒトとアニサキス～

    九州大学  馬出キャンパス  2022.7

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第86回サイエンスカフェ＠ふくおか「未来の魚の謎に迫る！〜新しい養殖のテクノロジー〜」

    九州大学  フジイギャラリー  2022.6

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第85回サイエンスカフェ＠ふくおか「環境の謎に迫る！〜持続不可能な地球〜」

    九州経済調査会  オンライン  2022.4

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • サイエンスカフェ「日常の中の相対性理論」

    福岡市科学館  福岡市科学館  2022.4

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第84回サイエンスカフェ＠ふくおか「骨の形の謎に迫る！〜数学がつなぐ異分野融合研究〜」

    九州経済調査会  オンライン  2022.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第83回サイエンスカフェ＠ふくおか「「空飛ぶクルマ」と未来社会！〜福岡・九州における可能性と課題〜」

    九州経済調査会  オンライン  2022.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第82回サイエンスカフェ＠ふくおか「太陽光発電の謎に迫る！〜脱炭素技術の最前線〜」

    九州経済調査会  オンライン  2022.1

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 新しい時代の博士を目指す「ジュニア科学者養成講座」-ニュートンコース（天文・物理・化学・情報）-

    福岡市科学館  2022.1

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    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 第16回KEKサマーチャレンジ ：宇宙線ミューオンを捕まえて素粒子の対称性を調べよう

    2022

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    第16回KEKサマーチャレンジ ：宇宙線ミューオンを捕まえて素粒子の対称性を調べよう

  • 第81回サイエンスカフェ＠ふくおか「新たなウイルスの謎に迫る！〜ウイルスハンター、虫を追う〜」

    九州経済調査会  オンライン  2021.11

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第80回サイエンスカフェ＠ふくおか「PM2.5の謎に迫る！〜気候変動と大気汚染の深い関係〜」

    九州経済調査会  オンライン  2021.8

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第79回サイエンスカフェ＠ふくおか「雰囲気の謎に迫る！〜姿を現さないもののための環境心理学〜」

    九州経済調査会  オンライン  2021.5

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第78回サイエンスカフェ＠ふくおか「万能薬にもなるメッセンジャーRNAの謎に迫る！〜コロナウイルスに対する救世主〜」

    九州経済調査会  オンライン  2021.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第77回サイエンスカフェ＠ふくおか「ふたごの個性の謎に迫る！〜遺伝子にはスイッチがついている？〜」

    九州経済調査会  オンライン  2020.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第3回まちづくりスクール

    公益財団法人九州大学学術研究都市推進機構  九州大学 日本ジョナサン・KS・チョイ文化館  2020.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Lecture

  • SOKENDAI セミナー「探Q宇宙線で探る宇宙の神秘」

    国立大学法人　総合研究大学院大学  日本科学未来館  2020.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Lecture

  • 第76回サイエンスカフェ＠ふくおか「ブラックホールの謎に迫る！〜見えるの？見えないの？〜」

    九州経済調査会  オンライン  2020.9

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。

  • 第75回サイエンスカフェ＠ふくおか「熱を電気に変換する分子ロボットの謎に迫る！〜熱応答分子科学を導入した熱化学電池の開発〜」

    九州経済調査会  オンライン  2020.6

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。コロナ禍においては、２、３ヶ月に1回の頻度でオンライン開催している。

  • 第73回サイエンスカフェ＠ふくおか「ニラマタンの謎に迫る！〜南太平洋バヌアツ共和国タンナ島の伝統建築を科学で分析する〜」

    九州経済調査会  2020.1

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。

  • 第72回サイエンスカフェ＠ふくおか「宇宙の謎にみんなで迫る！〜市民と研究者の架け橋〜」

    九州経済調査会  2019.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。

  • 第71回サイエンスカフェ＠ふくおか「つぶつぶの物理に迫る！〜混ぜても混ぜても分離する？？〜」

    九州経済調査会  2019.11

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。

  • サイエンスカフェ＠うきは27「免疫とは？免疫のふしぎな性質に迫る！〜自分の身体を守るシステムの不思議な世界〜」

    サイエンス友和会  2019.11

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 伊都キャンパス見学等模擬講義

    福岡県立明善高等学校　理数科１年生（４２名）（ＳＳＨの生徒）  2019.11

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    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 第70回サイエンスカフェ＠ふくおか「プラズマプロセス技術に迫る！〜スマートフォンからエネルギー問題・食糧問題まで〜」

    九州経済調査会  2019.10

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。

  • サイエンスカフェ＠うきは26「深海底に眠る地球史の解読に迫る！〜海底の堆積物が教えてくれるものとは？〜」

    サイエンス友和会  2019.10

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第69回サイエンスカフェ＠ふくおか「光の可能性に迫る！〜色と光とエネルギー〜」

    九州経済調査会  2019.9

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。

  • 第68回サイエンスカフェ＠ふくおか「透視はもはや超能力ではない！？〜地球上のどこでも・なんでも透視する技術：ミュオグラフィ〜」

    九州経済調査会  2019.8

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。

  • サイエンスカフェ＠うきは25「なぜ、消費者は"それ"を選ぶのか？心理学から消費者の意思決定を解き明かす。」

    サイエンス友和会  2019.8

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第67回サイエンスカフェ＠ふくおか「再生可能エネルギー量を引きあげろ！〜蓄エネルギーはどうするのがいいか考えよう〜」

    九州経済調査会  2019.6

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。

  • サイエンスカフェ＠うきは24「私たちの身近に潜む寄生虫〜あなどれない、されど愛しい虫たちの紹介〜」

    サイエンス友和会  2019.6

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第66回サイエンスカフェ＠ふくおか「線香花火の不思議に迫る！〜江戸時代からの謎がいま明らかに！〜」

    九州経済調査会  2019.5

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。

  • 第65回サイエンスカフェ＠ふくおか「数学的に美しい！？〜バラ曲線とフィボナッチ〜」

    九州経済調査会  2019.4

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。

  • 第5回サイエンスカフェ@唐津「ベクションとは何だ！？」

    eduラボ  2019.4

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第64回サイエンスカフェ＠ふくおか「身体も心！〜心理学のこれからについて考える〜」

    九州経済調査会  2019.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。

  • サイエンスカフェ＠うきは23「日本酒の香りを科学する！〜ナノテクノロジーを使った香りの制御〜」

    サイエンス友和会  2019.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • シチズンサイエンスを通じた地方課題解決〜市民と科学者が"つながる場"について考える〜「地域におけるサイエンスカフェ活動から見える市民巻き込み型学術の可能性」

    日本学術会議若手アカデミー  2019.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Lecture

  • サイエンスカフェ＠うきは22「あまり知られていないかもしれないCGの話し」

    サイエンス友和会  2019.2

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第63回サイエンスカフェ＠ふくおか「身体の中にお医者さんを送り込む！〜ナノテクノロジーで診る、治す〜」

    九州経済調査会  2019.1

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは21「材料の欠損が切り開く水素社会」

    サイエンス友和会  2019.1

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第13回KEKサマーチャレンジ ：宇宙線ミューオンを捕まえて素粒子の対称性を調べよう

    2019

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    第13回KEKサマーチャレンジ ：宇宙線ミューオンを捕まえて素粒子の対称性を調べよう

  • 第62回サイエンスカフェ＠ふくおか「次元の謎に迫る！〜空間は本当に3次元か〜」

    九州経済調査会  2018.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第4回サイエンスカフェ@唐津「原子の核心から元素の誕生に迫る」

    eduラボ  2018.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは20「帰ってきた！素粒子で探る宇宙の謎」

    サイエンス友和会  2018.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第61回サイエンスカフェ＠ふくおか「日本酒の香りを科学する！〜ナノテクノロジーを使った香りの制御〜」

    九州経済調査会  2018.11

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第3回サイエンスカフェ@唐津「低気圧はなぜ発達するの？」

    eduラボ  2018.11

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは19「においの科学〜嗅覚　それは最も原始的で解っていない感覚〜」

    サイエンス友和会  2018.11

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第108回サイエンスカフェにいがた「素粒子で探る宇宙の謎」

    サイエンスカフェにいがた  2018.11

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第103回パナソニック（福岡）侃諤会「素粒子から解明する！宇宙、そして我々の起源」

    パナソニック福岡  2018.11

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Lecture

  • 第60回サイエンスカフェ＠ふくおか「ロボットの身体・知能に迫る！〜人のように振る舞うロボットは作れるか〜」

    九州経済調査会  2018.10

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは18「原子って何？原子で読み解く元素周期表〜私たちは何から出来ているのか〜」

    サイエンス友和会  2018.10

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第59回サイエンスカフェ＠ふくおか「水素細菌の謎に迫る！〜水素酵素の探索と燃料電池への応用〜」

    九州経済調査会  2018.9

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは17「生き物が見る世界」

    サイエンス友和会  2018.9

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第58回サイエンスカフェ＠ふくおか「同期現象の謎に数学で迫る！〜メトロノームはなぜ揃う〜」

    九州経済調査会  2018.8

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 九州大学理学部先端自然科学講演会「素粒子物理学の最先端とニュートリノの小さい質量」

    九州大学  2018.8

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Lecture

  • 第41回サイエンスカフェ in SAGA「素粒子で探る宇宙の謎」

    佐賀県  2018.7

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第2回サイエンスカフェ@唐津「素粒子で探る宇宙の謎」

    eduラボ  2018.7

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第57回サイエンスカフェ＠ふくおか「CGの謎に迫る！〜ちょっと変わったCGのこと〜」

    九州経済調査会  2018.6

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第1回サイエンスカフェ@唐津「資本主義と科学」

    eduラボ  2018.6

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第56回サイエンスカフェ＠ふくおか「磁性ゴムの謎に迫る！〜やわらかい動きと4次元プリンタ〜」

    九州経済調査会  2018.5

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 特別版サイエンスカフェ＠ふくおか「宇宙の謎に迫る！〜姿を変えるニュートリノとニュートリノの小さい質量〜」

    九州経済調査会  2018.4

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第55回サイエンスカフェ＠ふくおか「「動き」と「計算」の関係に迫る！〜モバイルロボット群の分散協調〜」

    九州経済調査会  2018.4

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは16「体内時計って何だろう？〜それは何処にあるのか？どんなものか？どうしたら制御できるのか？〜」

    サイエンス友和会  2018.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第54回サイエンスカフェ＠ふくおか「二酸化炭素の貯留の謎に迫る！〜二酸化炭素地中貯留を炭素循環の視点で考える〜」

    九州経済調査会  2018.2

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。

  • サイエンスカフェ＠うきは15「往復5000km！うなぎの産卵と回遊のなぞ」

    サイエンス友和会  2018.2

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第53回サイエンスカフェ＠ふくおか「粘着・剥離の謎に迫る！〜くっつくとはがれるを科学する〜」

    九州経済調査会  2018.1

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第12回KEKサマーチャレンジ ：宇宙線ミューオンを捕まえて素粒子の対称性を調べよう

    2018

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    第12回KEKサマーチャレンジ ：宇宙線ミューオンを捕まえて素粒子の対称性を調べよう

  • 第52回サイエンスカフェ＠ふくおか「眠りを科学する！」～睡眠負債、たまっていませんか～

    九州経済調査会  2017.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 伊都キャンパス見学等模擬講義

    福岡県立八幡南高等学校2年生  2017.12

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    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 第51回サイエンスカフェ＠ふくおか「最先端生命科学に迫る！」～細胞工学から脳科学まで～

    九州経済調査会  2017.11

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第50回サイエンスカフェ＠ふくおか「極微の世界に迫る！」～私たちは原子でできている？～

    九州経済調査会  2017.10

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは14「磁石のなぜ？を考える！〜引きつけあったり、離れてみたり〜」

    サイエンス友和会  2017.10

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第49回サイエンスカフェ＠ふくおか「南極の空を飛行する！」～無人航空機による南極エアロゾル観測～

    九州経済調査会  2017.9

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 伊都キャンパス見学等模擬講義

    佐賀県立香楠中学校3年生  2017.9

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    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 第48回サイエンスカフェ＠ふくおか「海洋への進出を目指す！」～海中ビークル・ロボットによる海洋の調査～

    九州経済調査会  2017.7

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第47回サイエンスカフェ＠ふくおか「原子炉の謎に迫る！」～原子核の連鎖反応を達成する仕組み～

    九州経済調査会  2017.6

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは13「自然の言い伝えを科学する」

    サイエンス友和会  2017.6

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 伊都キャンパス見学等模擬講義

    福岡県立宗像中学校2年生  2017.6

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    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 第46回サイエンスカフェ＠ふくおか「ウナギの産卵の謎に迫る！」～大回遊の立役者は小さな頭の幼生～

    九州経済調査会  2017.5

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第45回サイエンスカフェ＠ふくおか「燃料電池で地球を救えるか！？」～アイディアとその実践～

    九州経済調査会  2017.4

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第44回サイエンスカフェ＠ふくおか「色覚進化の謎に迫る！」～霊長類の色覚の進化と多様性～

    九州経済調査会  2017.2

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。

  • 第43回サイエンスカフェ＠ふくおか「新しい花の作り方の謎に迫る！」～バイオテクノロジーを利用した新しい花の創出～

    九州経済調査会  2017.1

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは12「動物たちの生き抜く知恵〜ヘビに睨まれたカエルのはなし第2弾〜」

    サイエンス友和会  2017.1

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第1回eduカフェ「素粒子で迫る宇宙の謎」

    eduラボ  2017.1

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第11回KEKサマーチャレンジ ：宇宙線ミューオンを捕まえて素粒子の対称性を調べよう

    2017

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    第11回KEKサマーチャレンジ ：宇宙線ミューオンを捕まえて素粒子の対称性を調べよう

  • 第42回サイエンスカフェ＠ふくおか「材料の表面に迫る！」～次世代材料の開発の鍵をにぎる精密合成・解析法～

    九州経済調査会  2016.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは11「なぜ、人は、脳に騙されるのか？」

    サイエンス友和会  2016.11

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第41回サイエンスカフェ＠ふくおか「アナログとデジタルの関係に迫る！」～人の思考、コンピュータ、人工知能～

    九州経済調査会  2016.10

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは10「植物が奏でる豊作のリズム」

    サイエンス友和会  2016.10

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは9「素粒子で探る宇宙の謎」

    サイエンス友和会  2016.9

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第40回サイエンスカフェ＠ふくおか「ナノパーティクルの化学に迫る！～持続可能な社会と触媒化学～」

    九州経済調査会  2016.8

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第39回サイエンスカフェ＠ふくおか「野生動物との共存に迫る！～狩猟を通して考える、人と野生動物の関係～」

    九州経済調査会  2016.7

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは8「脳の不思議、脳の可能性、いま、脳はどこまで解明されているか」

    サイエンス友和会  2016.7

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 2016夏休み「親子deサイエンス」

    eduラボ  2016.7

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Lecture

  • 第38回サイエンスカフェ＠ふくおか「磁石の謎に迫る！～ナノテクで切り拓く磁石の世界～」

    九州経済調査会  2016.5

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは7「宇宙太陽光発電のお話、無限のクリーンエネルギーは可能か？」

    サイエンス友和会  2016.5

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第37回サイエンスカフェ＠ふくおか「宇宙のささやきを"聞く"！～天文学の新時代を切り開く重力波～」

    九州経済調査会  2016.4

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第36回サイエンスカフェ＠ふくおか「アロマテラピーは科学だ！～香りのパワーと抽出技術に迫る～」

    九州経済調査会  2016.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは6「ブラックホールの調べ方〜重力波から「ひとみ」衛星へ〜」

    サイエンス友和会  2016.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 九州大学理学部物理学科第19回体験物理学〜物理の世界を体験しよう〜

    2016.3

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    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 第35回サイエンスカフェ＠ふくおか「人間の設計図を紐解く！～物理学が切り開く生命の仕組み～」

    九州経済調査会  2016.2

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • ISITセミナー「BIZCOLIサイエンスカフェ」の活動紹介

    九州先端科学技術研究所  2016.2

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Seminar, workshop

  • サイエンスカフェ＠うきは5「系外惑星のお話〜第2の地球は、存在するのか？〜」

    サイエンス友和会  2016.1

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第10回KEKサマーチャレンジ ：宇宙線ミューオンを捕まえて素粒子の対称性を調べよう

    2016

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    第10回KEKサマーチャレンジ ：宇宙線ミューオンを捕まえて素粒子の対称性を調べよう

  • 第34回サイエンスカフェ＠ふくおか「錯視の謎に迫る！」 ～目で見たものは真実なのか～」

    九州経済調査会  2015.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは4「心理学者になってみましたが、何か？...ダメ人間の...生き方」

    サイエンス友和会  2015.11

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第33回サイエンスカフェ＠ふくおか「現代の錬金術を考える！～周期表を利用した新素材づくり～」

    九州経済調査会  2015.10

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第32回サイエンスカフェ＠ふくおか「無意識の力に迫る！～知らぬ間に働くあなたの小人～」

    九州経済調査会  2015.9

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは3「滅びゆく地味な虫を探せ！〜ムシをムシするな〜！！〜」

    サイエンス友和会  2015.9

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第31回サイエンスカフェ＠ふくおか「九州の西の海の恵みと危機～九州西部の海の環境や資源の管理を考える～」

    九州経済調査会  2015.8

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第29回サイエンスカフェ＠ふくおか「究極のエネルギー！？水素エネルギーに迫る?水素エネルギーと燃料電池のミライ?」

    九州経済調査会  2015.7

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは2「カメムシ再考（最高）　魅力的なカメムシの世界へようこそ！」

    サイエンス友和会  2015.7

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第30回サイエンスカフェ＠ふくおか「地球の謎を解き明かす～地球の中を見る、地球の変動を捉える、地球と上手く付き合う～」

    九州経済調査会  2015.5

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • サイエンスカフェ＠うきは1「ヘビに食べられないツチガエルの謎に迫る！〜カエルとヘビのおもしろい世界〜」

    サイエンス友和会  2015.5

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第28回サイエンスカフェ＠ふくおか「超伝導技術で拓くグリーンイノベーション！〜体験してみよう超伝導の世界〜」

    九州経済調査会  2015.4

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

    通常の講演会とは異なり、参加者と話者の双方向性を重視したサイエンスカフェをおよそ月1回の頻度で開催している。

  • 第27回サイエンスカフェ＠ふくおか「コンピュータにとって計算とはなにか？?パソコン、スマホはなぜ動く?」

    九州経済調査会  2015.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第2回サイエンスカフェ糸島「生物の謎に迫る！水の妖精あめんぼ」

    サイエンスカフェ糸島　実行委員会  2015.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • JASC地域連携委員会・西日本地区事業「具体的事例から考える地域におけるサイエンスコミュニケーションの現状とこれから」

    日本サイエンスコミュニケーション協会  2015.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Lecture

  • 九州大学理学部物理学科第18回体験物理学〜物理の世界を体験しよう〜

    2015.3

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    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 第26回サイエンスカフェ＠ふくおか「スプーン一杯10億トン！極限物質"原子核"とは?巨大加速器で迫る量子力学の世界?」

    九州経済調査会  2015.1

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第9回KEKサマーチャレンジ ：宇宙線ミューオンを捕まえて素粒子の対称性を調べよう

    2015

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    第9回KEKサマーチャレンジ ：宇宙線ミューオンを捕まえて素粒子の対称性を調べよう

  • 第25回サイエンスカフェ＠ふくおか「生物の謎に迫る！おもしろい昆虫たち?標本と生態からわかること?」

    九州経済調査会  2014.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第24回サイエンスカフェ＠ふくおか「ミクロな世界で水を見る！?コンピュータシミュレーションで見る水の動き?」

    九州経済調査会  2014.10

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第1回サイエンスカフェ糸島「生物の謎に迫る！〜カエルとヘビの特殊能力〜」

    サイエンスカフェ糸島　実行委員会  2014.10

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第23回サイエンスカフェ＠ふくおか「二酸化炭素を考える?循環する物質、二酸化炭素を深く考える?」

    九州経済調査会  2014.9

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第22回サイエンスカフェ＠ふくおか「究極のエコカー！？水素燃料電池自動車に迫る?水素の力で環境・エネルギー問題に立ち向かう?」

    九州経済調査会  2014.8

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第21回サイエンスカフェ＠ふくおか「人体の謎に迫る！?心の中へ探検、心の謎に迫る！?」

    九州経済調査会  2014.7

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 出張授業

    松山西中等教育学校  2014.7

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    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 第20回サイエンスカフェ＠ふくおか「人体の謎に迫る！?人体の奇跡、体内時計の仕組みを解き明かす！?」

    九州経済調査会  2014.6

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第19回サイエンスカフェ＠ふくおか「生物の謎に迫る！?永遠の好敵手、カエルとヘビの特殊能力に迫る！?」

    九州経済調査会  2014.5

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第18回サイエンスカフェ＠ふくおか「天然素材の都市伝説を科学する！?きのこ、アロマ・・・自然の知られざる力?」

    九州経済調査会  2014.4

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第17回サイエンスカフェ＠ふくおか「ロボットを創る！?ロボットと環境モデリング?」

    九州経済調査会  2014.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 九州大学理学部物理学科第17回体験物理学〜物理の世界を体験しよう〜

    2014.3

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    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 第1回九大Tech Forum「低エネルギー中性子で探る宇宙の謎」

    九州大学  2014.2

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Lecture

  • 第16回サイエンスカフェ＠ふくおか「人体の謎に迫る！?脳の神秘に迫る?」

    九州経済調査会  2014.1

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第15回サイエンスカフェ＠ふくおか「生物の謎に迫る！?水上の妖精アメンボ?」

    九州経済調査会  2013.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第1回サイエンスカフェ＠津屋崎「科学、食べました」

    Linus & Co. Veggy  2013.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第14回サイエンスカフェ＠ふくおか「地震のメカニズムと最新の地震予測」

    福岡県庁  2013.11

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第13回サイエンスカフェ＠ふくおか「ILCに迫る！」

    福岡県庁  2013.8

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第12回サイエンスカフェ＠ふくおか「宇宙を語る！」

    福岡県庁  2013.7

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第11回サイエンスカフェ＠ふくおか「宇宙に行く！」

    福岡県庁  2013.6

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第10回サイエンスカフェ＠ふくおか「素粒子をとらえる！」

    福岡県庁  2013.5

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第9回サイエンスカフェ＠ふくおか「相対性理論に迫る」

    福岡県庁  2013.4

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 低温工学・超電導学会・西日本支部総会「ILC(国際リニアコライダー)計画について」

    低温工学・超電導学会  2013.4

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Seminar, workshop

  • 第7回サイエンスカフェ＠ふくおか「星の一生、宇宙の一生」

    福岡県庁  2013.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • いとしまサイエンスキャラバン「宇宙のはじまりと今」

    糸島市  2013.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Lecture

  • 第8回サイエンスカフェ＠ふくおか「九州で宇宙を創る」

    福岡県庁  2013.3

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第6回サイエンスカフェ＠ふくおか「宇宙観のうつろい?天動説からビッグバンまで?」

    福岡県庁  2013.1

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第5回サイエンスカフェ＠ふくおか「ミクロの不思議な世界?量子力学の奇妙な冒険?」

    福岡県庁  2012.12

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第4回サイエンスカフェ＠ふくおか「素粒子、ヒッグス粒子、ILCとかけまして・・・」

    福岡県庁  2012.11

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第3回サイエンスカフェ＠ふくおか「ビッグバンを再現する巨大加速器を解き明かす」

    福岡県庁  2012.10

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第2回サイエンスカフェ＠ふくおか「ヒッグスとCERN」

    福岡県庁  2012.9

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 第1回サイエンスカフェ＠ふくおか「宇宙の謎に迫る！」

    福岡県庁  2012.8

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    Audience：General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 日本科学技術振興団ウィンターサイエンスキャンプ　加速器による、素粒子から身近な物質までを探る研究を体験：「中性子コース」

    2010.12

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    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 第4回KEKサマーチャレンジ ：時間反転対称性の破れの探索〜フェルミオンの電気双極子能率〜

    2010

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    第4回KEKサマーチャレンジ ：時間反転対称性の破れの探索〜フェルミオンの電気双極子能率〜

  • 第3回KEKサマーチャレンジ ：時間反転対称性の破れの探索〜フェルミオンの電気双極子能率〜

    2009

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    第3回KEKサマーチャレンジ ：時間反転対称性の破れの探索〜フェルミオンの電気双極子能率〜

  • Cosmic Ray e-Lab Workshop

    2008.3

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    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 出張授業

    埼玉県立川越高等学校  2008.1

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    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 第2回KEKサマーチャレンジ ：中性子減速

    2008

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    第2回KEKサマーチャレンジ ：中性子減速

  • 出張授業

    埼玉県立川越高等学校  2007.1

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    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

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Media Coverage

  • 福岡市科学館で行った小学生向けのサイエンスカフェの様子が記事として掲載された。 Newspaper, magazine

    読売新聞  2022.4

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    福岡市科学館で行った小学生向けのサイエンスカフェの様子が記事として掲載された。

  • 福岡市科学館で開催された「アインシュタイン展」の展示パネルの監修を行った。

    福岡市科学館  2022.3

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    福岡市科学館で開催された「アインシュタイン展」の展示パネルの監修を行った。

  • 米国立標準技術研究所で行われた中性子干渉計を用いた未知短距離力探索実験の結果について、コメントを求められた。 https://physicsworld.com/a/neutron-experiment-tightens-the-net-around-possible-fifth-force/ Newspaper, magazine

    Physics World  2021.9

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    米国立標準技術研究所で行われた中性子干渉計を用いた未知短距離力探索実験の結果について、コメントを求められた。
    https://physicsworld.com/a/neutron-experiment-tightens-the-net-around-possible-fifth-force/

  • フェルミ国立加速器研究所で行われたミュー粒子異常磁気能率精密測定実験の結果について、コメントを求められた。 https://physicsworld.com/a/the-muons-theory-defying-magnetism-is-confirmed-by-new-experiment/ Newspaper, magazine

    Physics World  2021.4

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    フェルミ国立加速器研究所で行われたミュー粒子異常磁気能率精密測定実験の結果について、コメントを求められた。
    https://physicsworld.com/a/the-muons-theory-defying-magnetism-is-confirmed-by-new-experiment/

  • サイエンスカフェ＠ふくおかの運営者として取り上げていただいた。

    ふくおか人物図鑑  2020.1

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    サイエンスカフェ＠ふくおかの運営者として取り上げていただいた。

  • 主導した実験の結果についての解説記事。 https://physicsworld.com/a/neutrons-probe-gravitys-inverse-square-law/ Newspaper, magazine

    Physics World  2018.1

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    主導した実験の結果についての解説記事。
    https://physicsworld.com/a/neutrons-probe-gravitys-inverse-square-law/

  • 福岡を担う40歳以下の若者の一人として取り上げていただいた。 Newspaper, magazine

    フォーラム福岡第60号　福岡を担うU40群像  2015.3

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    福岡を担う40歳以下の若者の一人として取り上げていただいた。

  • 物理学全般に関するインタビュー。 TV or radio program

    TNCももち浜ストア・プラス  2014.7

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    物理学全般に関するインタビュー。

  • サイエンスカフェ＠ふくおかの紹介。 TV or radio program

    エフエム福岡　スーパー・レディオ・モンスター　ラジゴン　いキタクなる部  2014.5

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    サイエンスカフェ＠ふくおかの紹介。

  • 主に国際リニアコライダー計画に関するインタビュー記事。 Newspaper, magazine

    I・B（アイ・ビー）  2013.6

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    主に国際リニアコライダー計画に関するインタビュー記事。

  • 国際リニアコライダー計画に関するインタビュー。 TV or radio program

    TNC ふくおかにリンク「ILC"国際リニアコライダーにリンク"」  2013.5

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    国際リニアコライダー計画に関するインタビュー。

  • 国際リニアコライダー計画のインタビュー記事。 Newspaper, magazine

    糸島新聞　宇宙誕生の謎を解明。  2013.5

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    国際リニアコライダー計画のインタビュー記事。

  • 国際リニアコアライダー計画についての記事を執筆した。

    NYAISASメールマガジン  2013.4

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    国際リニアコアライダー計画についての記事を執筆した。

  • サイエンスカフェ＠ふくおかの活動を紹介していただいた。 Newspaper, magazine

    讀賣新聞　宇宙の謎　市民目線で迫る  2012.8

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    サイエンスカフェ＠ふくおかの活動を紹介していただいた。

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Travel Abroad

  • 2023.5

    Staying countory name 1：United States   Staying institution name 1：ハワイ大学

  • 2019.6

    Staying countory name 1：Korea, Republic of   Staying institution name 1：ソウル大学

  • 2018.10

    Staying countory name 1：United States   Staying institution name 1：Hawaii

  • 2016.2

    Staying countory name 1：United States   Staying institution name 1：MHI

  • 2013.9 - 2013.10

    Staying countory name 1：Russian Federation   Staying institution name 1：JINR

  • 2013.9

    Staying countory name 1：France   Staying institution name 1：Annecy

  • 2013.6 - 2013.7

    Staying countory name 1：Germany   Staying institution name 1：DESY

  • 2013.5 - 2013.6

    Staying countory name 1：Germany   Staying institution name 1：DESY

    Staying countory name 2：France   Staying institution name 2：Ecole Polytechnique

  • 2013.2

    Staying countory name 1：Germany   Staying institution name 1：DESY

  • 2012.10

    Staying countory name 1：United States   Staying institution name 1：University of Texas at Arlington

  • 2012.9

    Staying countory name 1：United Kingdom   Staying institution name 1：Cambridge University

    Staying countory name 2：France   Staying institution name 2：Ecole Polytechnique

  • 2012.7 - 2012.8

    Staying countory name 1：Germany   Staying institution name 1：DESY

  • 2012.7

    Staying countory name 1：Australia   Staying institution name 1：Melbourne

  • 2012.4

    Staying countory name 1：Korea, Republic of   Staying institution name 1：Daegue

  • 2012.2

    Staying countory name 1：France   Staying institution name 1：Ecole Polytechnique

  • 2011.11

    Staying countory name 1：Korea, Republic of   Staying institution name 1：Kyungpook National University

  • 2011.10

    Staying countory name 1：France   Staying institution name 1：Institute Laue Langevin

  • 2011.9 - 2011.10

    Staying countory name 1：France   Staying institution name 1：Institute Laue Langevin

    Staying countory name 2：Spain   Staying institution name 2：the Universidad de Granada

  • 2011.8 - 2011.9

    Staying countory name 1：France   Staying institution name 1：Institute Laue Langevin

  • 2011.5

    Staying countory name 1：Switzerland   Staying institution name 1：CERN

    Staying countory name 2：France   Staying institution name 2：LAL/Orsay

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