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List of Papers
Takashi Yamanaka Last modified date：2023.12.12

Assistant Professor / Division for Experimental Natural Science / Faculty of Arts and Science


Papers
1. 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, Rabi-oscillation spectroscopy of the hyperfine structure of muonium atoms, Physical Review A, 10.1103/physreva.104.l020801, 104, 2, 2021.08.
2. 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, SliT: A strip-sensor readout chip with subnanosecond time walk for the J-PARC muon g-2/EDM experiment, IEEE Transactions on Nuclear Science, 10.1109/TNS.2020.3012924, 67, 19, 2089-2095, 2020.07, [URL], A new silicon-strip readout chip named “SliT” has been developed for the measurement of the muon anomalous magnetic moment and electric dipole moment at 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 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. The SliT128C satisfies all requirements of the J-PARC muon g-2/EDM experiment..
3. 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, Development of a front-end ASIC for silicon -strip detectors of the J-PARC muon g-2 /EDM experiment, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 10.1016/j.nima.2020.164035, 969, 2020.07.
4. 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 and T. Yoshioka, Performance evaluation of a silicon strip detector for positrons/electrons from a pulsed a muon beam, Journal of Instrumentation, 10.1088/1748-0221/15/04/P04027, 15, P04027, 2020.04, [URL], 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 um 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 DAQMiddleware 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..
5. 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, Positron tracking detector for J-PARC muon g−2/EDM experiment, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 10.1016/j.nima.2019.162786, 958, 162786-162786, 2020.04.
6. 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. Strasser1, 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, and T.Yoshioka, A new approach for measuring the muon anomalous magnetic moment and electric dipole moment, Progress of Theoretical and Experimental Physics, 10.1093/ptep/ptz030, 2019, 5, 053C02, 2019.05, 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^−21 e · cm..
7. ATLAS Collaboration, Search for squarks and gluinos in final states with jets and missing transverse momentum using 36 fb^-1 of √s = 13 TeV pp collision data with the ATLAS detector, PHYSICAL REVIEW D, 10.1103/PhysRevD.97.112001, 97, 112001, 2018.06, A search for the supersymmetric partners of quarks and gluons (squarks and gluinos) in final states containing hadronic jets and missing transverse momentum, but no electrons or muons, is presented. The data used in this search were recorded in 2015 and 2016 by the ATLAS experiment in √s=13 TeV proton-proton collisions at the Large Hadron Collider, corresponding to an integrated luminosity of 36.1 fb^−1. The results are interpreted in the context of various models where squarks and gluinos are pair
produced and the neutralino is the lightest supersymmetric particle. An exclusion limit at the 95% confidence level on the mass of the gluino is set at 2.03 TeV for a simplified model incorporating only a gluino and the lightest neutralino, assuming the lightest neutralino is massless. For a simplified model involving the strong production of mass-degenerate first- and second-generation squarks, squark masses below 1.55 TeV are excluded if the lightest neutralino is massless. These limits substantially extend the region of supersymmetric parameter space previously excluded by searches with the ATLAS detector..
8. ATLAS Collaboration, Search for squarks and gluinos in final states with jets and missing transverse momentum at √s=13 TeV with the ATLAS detector, The European Physical Journal C, 10.1140/epjc/s10052-016-4184-8, 76, 392, 2016.06, [URL], A search for squarks and gluinos in final states containing hadronic jets, missing transverse momentum but no electrons or muons is presented. The data were recorded in 2015 by the ATLAS experiment in √s= 13 TeV proton--proton collisions at the Large Hadron Collider. No excess above the Standard Model background expectation was observed in 3.2 fb^−1 of analyzed data. Results are interpreted within simplified models that assume R-parity is conserved and the neutralino is the lightest supersymmetric particle. An exclusion limit at the 95% confidence level on the mass of the gluino is set at 1.51 TeV for a simplified model incorporating only a gluino octet and the lightest neutralino, assuming the lightest neutralino is massless. For a simplified model involving the strong production of mass-degenerate first- and second-generation squarks, squark masses below 1.03 TeV are excluded for a massless lightest neutralino. These limits substantially extend the region of supersymmetric parameter space excluded by previous measurements with the ATLAS detector..
9. ATLAS Collaboration (G. Aad, T. Yamanaka et al.), ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider, The European Physical Journal C, 10.1140/epjc/s10052-015-3726-9, 75, 10, 510, 2015.10.
10. ATLAS Collaboration (G. Aad, T. Yamanaka et al.), Search for direct top squark pair production in events with a Z boson, b-jets and missing transverse momentum in $sqrt{s}$=8 TeV pp collisions with the ATLAS detector, The European Physical Journal C, 10.1140/epjc/s10052-014-2883-6, 74, 6, 2883, 2014.06.
11. Taikan Suehara, Masahiro Oroku, Takashi Yamanaka, Hakutaro Yoda, Tomoya Nakamura, Yoshio Kamiya, Yosuke Honda, Tatsuya Kume, Toshiaki Tauchi, Tomoyuki Sanuki, Sachio Komamiya, A nanometer beam size monitor for ATF2, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 10.1016/j.nima.2010.02.065, 616, 1, 1-8, 2010.04.


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