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List of Papers
Yoshioka Tamaki Last modified date：2024.04.23

Associate Professor / Research Center for Advanced Particle Physics


Papers
1. 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, Measurement of the transverse asymmetry of γ rays in the 117Sn(n,γ)118Sn reaction, Physical Review C, 10.1103/physrevc.106.064601, 106, 6, 2022.12, 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..
2. Shusuke Takada, Kenichiro Tateishi, Yasuo Wakabayashi, Yoshimasa Ikeda, Tamaki Yoshioka, Yoshie Otake, Tomohiro Uesaka, Polarized proton spin filter for epithermal neutrons based on dynamic nuclear polarization using photo-excited triplet electron spins, PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, 10.1093/ptep/ptaa111, 2020, 12, 2020.12, 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..
3. 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, Measurement of the angular distribution of γ-rays after neutron capture by 139La for a T-violation search, EPJ Web of Conferences, 10.1051/epjconf/201921909001, 2019.12.
4. 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, New precise measurements of muonium hyperfine structure at J-PARC MUSE, EPJ Web of Conferences (in press), 2019.01.
5. Noriko Oi, Hirohiko M. Shimizu, Katsuya Hirota, Masaaki Kitaguchi, Christopher C. Haddock, William M. Snow, Tamaki Yoshioka, Kenji Mishima, Takashi Ino, Tatsushi Shima, A Search for Possible Deviations from Newtonian Gravity at the nm Length Scale Using Neutron-Noble Gas Scattering, JPS Conference Proceedings, 2018.11.
6. 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, Fundamental Physics Using High-Performance Optics, JPS Conference Proceedings, 2018.11.
7. 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, Measurement of (n,gamma) Reaction of 117Sn for T-Violation Search by Using Compound Nucleus, JPS Conference Proceedings, 2018.11.
8. Measurement of Angular Distributions in 139La(n,????) Reaction for T Violation Search.
9. Angular Distribution of $gamma$-rays from Neutron-Induced Compound States of $^{140}$La.
10. Neutron lifetime measurement at J-PARC/BL05: Beamline upgrade for high statistical measurements.
11. 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, Search for the rare decay K+ →μ+ν ν ν SEARCH for the RARE DECAY ... A. V. ARTAMONOV et al., Physical Review D, 10.1103/PhysRevD.94.032012, 94, 3, 2016.08, 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)
12. Performance evaluation of PSD for silicon ECAL.
13. Performance study of SKIROC2 and SKIROC2A with BGA testboard.
14. Precise neutron lifetime experiment using pulsed neutron beams at J-PARC.
15. Search for the decay K+-->μ+ννν.
16. Search for the rare decay K+ →μ+ν ν ν SEARCH for the RARE DECAY ... A. V. ARTAMONOV et al..
17. 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, Beam test performance of the SKIROC2 ASIC, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 10.1016/j.nima.2014.12.011, 778, 78-84, 2015.04, 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..
18. 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, Performance test of a lead-glass counter for the J-PARC E36 experiment, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 10.1016/j.nima.2015.01.044, 779, 13-17, 2015.04, 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% while maintaining a high e(+) detection efficiency of 98%. (C) 2015 Elsevier By. All rights reserved..
19. 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% 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..
20. Optimization of layer composition for ILD ECAL.
21. 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, The time structure of hadronic showers in highly granular calorimeters with tungsten and steel absorbers, JOURNAL OF INSTRUMENTATION, 10.1088/1748-0221/9/07/P07022, 9, 7, 2014.07, 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..
22. 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, Shower development of particles with momenta from 1 to 10 GeV in the CALICE Scintillator-Tungsten HCAL, JOURNAL OF INSTRUMENTATION, 10.1088/1748-0221/9/01/P01004, 9, 1, 2014.01, 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..
23. A silicon sensor study for the ILD ECAL.
24. Characteristic study of silicon sensor for ILD ECAL.
25. 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, Development of a new neutron mirror made of deuterated Diamond-like carbon, INTERNATIONAL WORKSHOP ON NEUTRON OPTICS AND DETECTORS (NOP&D 2013), 10.1088/1742-6596/528/1/012010, 528, 1, 2014.01, 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..
26. Hybrid ECAL Optimization and related developments.
27. 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, Production of Ultra Cold Neutrons by a Doppler Shifter with Pulsed Neutrons at J-PARC, INTERNATIONAL WORKSHOP ON NEUTRON OPTICS AND DETECTORS (NOP&D 2013), 10.1088/1742-6596/528/1/012030, 528, 1, 2014.01, 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..
28. The development of a low energy neutron accelerator for rebunching pulsed neutrons.
29. 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, Track segments in hadronic showers in a highly granular scintillator-steel hadron calorimeter, JOURNAL OF INSTRUMENTATION, 10.1088/1748-0221/8/09/P09001, 8, 9, 2013.09, 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..
30. 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, Validation of GEANT4 Monte Carlo models with a highly granular scintillator-steel hadron calorimeter, Journal of Instrumentation, 10.1088/1748-0221/8/07/P07005, 8, 7, 2013.07, 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..
31. Rebunching ultracold neutrons by magnetic deceleration for the neutron edm experimental at J-parc.
32. 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, Present status of neutron fundamental physics at J-PARC, PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, 10.1093/ptep/pts075, 1, 2012.01, 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..
33. Rebunching low energy neutrons by magnetic acceleration and deceleration.
34. 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, Measurement of the neutron beam polarization of BL05/NOP beamline at J-PARC, PHYSICA B-CONDENSED MATTER, 10.1016/j.physb.2011.01.009, 406, 12, 2424-2428, 2011.06, 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..
35. Study of the decay K+→π+νν̄ in the momentum region 140

Experiment E949 at Brookhaven National Laboratory has observed three new events consistent with the decay K+→π+νν̄ in the pion momentum region 140
36. 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, Study of the decay K+ -> pi(+) nu(nu)over-bar in the momentum region 140 PHYSICAL REVIEW D, 10.1103/PhysRevD.79.092004, 79, 9, 2009.05, 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 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..
37. Hidden particle production at the ILC.
38. 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
39. 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, Measurement of the K+→π+νν? branching ratio, Physical Review D - Particles, Fields, Gravitation and Cosmology, 10.1103/PhysRevD.77.052003, 77, 5, 2008.03.
40. Study of MPPC at liquid nitrogen temperature.
41. Study of afterpulsing of MPPC with waveform analysis.
42. New cutting scheme of magnetic alloy cores for J-PARC synchrotrons.
43. 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% confidence level. The upper limit is also applicable to π0 decays into unknown weakly-interacting particles. © 2005 The American Physical Society..
44. 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, Upper limit on the branching ratio for the decay pi 0 -> vv(-), PHYSICAL REVIEW D, 10.1103/PhysRevD.72.091102, 72, 9, 2005.11, 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% confidence level. The upper limit is also applicable to pi(0) decays into unknown weakly-interacting particles..
45. 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% confidence-level upper limit on the partial branching ratio was obtained, B(K →π γγ,P>213 MeV/c)
46. 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, Improved measurement of the K+ → π+ νν? branching ratio, Physical Review Letters, 10.1103/PhysRevLett.93.031801, 93, 3, 31801, 2004.07.


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