Details of the Researcher

PHOTO

Atsushi Tokiyasu
Section
Research Center for Accelerator and Radioisotope Science
Job title
Assistant Professor
Degree

  • 博士（理学）（京都大学）

  • 修士（理学）（京都大学）

e-Rad No.
40739471

Research History 5

  • 2024/04 - Present
    東北大学 先端量子ビーム科学研究センター　助教

  • 2015/04 - 2024/03
    Tohoku Univeristy　Research Center for Electron Photon Science　assistant professor

  • 2014/06 - 2015/03
    Osaka University　Research Center for Nuclear Physics　appointed assistant professor

  • 2014/04 - 2014/06
    Osaka University　Research Center for Nuclear Physics　specially appointed researcher

  • 2013/04 - 2014/03
    Osaka University　Research Center for Nuclear Physics　assistant teaching staff

Professional Memberships 1

  • THE PHYSICAL SOCIETY OF JAPAN

Research Areas 1

  • Natural sciences / Particle, nuclear, cosmic-ray, and astrophysics - experiment /

Awards 1

  1. 第21回 原子核談話会 新人賞

    2014

Papers 36

  1. Strangeness physics programs by S-2S at J-PARC

    Toshiyuki Gogami, Patrick Achenbach, Jung Keun Ahn, Darko Androić, Kanae Aoki, Arshak Asaturyan, Elena Botta, Masroor. H. Bukhari, Alexandre Camsonne, Silviu. C. Covrig, Kengo Ebata, Hiroyuki Ekawa, Petr Evtoukhovitch, Alessandro Feliciello, Hiroyuki Fujioka, Manami Fujita, Franco Garibaldi, Takeshi. K. Harada, Shoichi Hasegawa, Tomoyuki Hasegawa, Shuhei. H. Hayakawa, Erina Hirose, Ryotaro Honda, Kenji Hosomi, Yudai Ichikawa, Kenichi Imai, Tatsuhiro Ishige, Wooseung Jung, Kento Kamada, Shunsuke Kanatsuki, Seigo Kato, Shinhyung. H. Kim, Takumi Kobori, Simonetta Marcello, Pete Markowitz, Koji Miwa, Arthur Mkrtchyan, Hamlet Mkrtchyan, Manabu Moritsu, Tomofumi Nagae, Sho Nagao, Manami Nakagawa, Satoshi. N. Nakamura, Takuya Nanamura, Megumi Naruki, Ryosuke Negishi, Kazuki Okuyama, Fumiya Oura, Bishnu Pandey, Josef Pochodzalla, Atsushi Sakaguchi, Tamao Sakao, Hiroyuki Sako, Chhanda Samanta, Susumu Sato, Mitra. H. Shabestari, Albert Shahinyan, Kotaro Shirotori, Simon Širca, C. Son, Hitoshi Sugimura, Hitoshi Takahashi, Shuji Takahashi, Tomonori Takahashi, Toshiyuki Takahashi, Hirokazu Tamura, Kiyoshi Tanida, Atsushi Tokiyasu, Zviadi Tsamalaidze, Makoto Uchida, Mifuyu Ukai, Chiaki Une, Guido. M. Urciuoli, Takeshi. O. Yamamoto

    EPJ Web of Conferences　271　11002-11002　2022

    Publisher: EDP Sciences

    DOI： 10.1051/epjconf/202227111002 　

    eISSN： 2100-014X

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    In the K1.8 beam-line at Hadron Experimental Facility of J-PARC, a new magnetic spectrometer S-2S is being installed. S-2S was designed to achieve a high momentum resolution of Δp/p = 6 × 10−4 in FWHM. Several strangeness-physics programs which require the high resolution will be realized by S-2S. The present article introduces J-PARC E70 (missing-mass spectroscopy of Ξ12Be) and E94 (missing-mass spectroscopy of Λ7Li, Λ10B, and Λ12C) experiments.

  2. Development of a real-time beam profile monitor for GeV photons and its application in accelerator facilities

    R. Kino, S. Nagao, T. Akiyama, H. Fujioka, T. Fujiwara, T. Ishige, K. Itabashi, S. Kajikawa, M. Kaneta, M. Mizuno, S.N. Nakamura, K. Nishi, K. Nishida, K. Okuyama, F. Oura, K. Tachibana, Y. Toyama, D. Watanabe

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment　1070　169992-169992　2025/01

    Publisher: Elsevier BV

    DOI： 10.1016/j.nima.2024.169992 　

    ISSN： 0168-9002

  3. Optimization of laser-driven quantum beam generation and the applications with artificial intelligence

    Y. Kuramitsu, T. Taguchi, F. Nikaido, T. Minami, T. Hihara, S. Suzuki, K. Oda, K. Kuramoto, T. Yasui, Y. Abe, K. Ibano, H. Takabe, C. M. Chu, K. T. Wu, W. Y. Woon, S. H. Chen, C. S. Jao, Y. C. Chen, Y. L. Liu, A. Morace, A. Yogo, Y. Arikawa, H. Kohri, A. Tokiyasu, S. Kodaira, T. Kusumoto, M. Kanasaki, T. Asai, Y. Fukuda, K. Kondo, H. Kiriyama, T. Hayakawa, S. J. Tanaka, S. Isayama, N. Watamura, H. Suzuki, H. S. Kumar, N. Ohnishi, T. Pikuz, E. Filippov, K. Sakai, R. Yasuhara, M. Nakata, R. Ishikawa, T. Hoshi, A. Mizuta, N. Bolouki, N. Saura, S. Benkadda, M. Koenig, S. Hamaguchi

    Physics of Plasmas　31　(5)　2024/05/01

    Publisher: AIP Publishing

    DOI： 10.1063/5.0190062 　

    ISSN： 1070-664X

    eISSN： 1089-7674

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    We have investigated space and astrophysical phenomena in nonrelativistic laboratory plasmas with long high-power lasers, such as collisionless shocks and magnetic reconnections, and have been exploring relativistic regimes with intense short pulse lasers, such as energetic ion acceleration using large-area suspended graphene. Increasing the intensity and repetition rate of the intense lasers, we have to handle large amounts of data from the experiments as well as the control parameters of laser beamlines. Artificial intelligence (AI) such as machine learning and neural networks may play essential roles in optimizing the laser and target conditions for efficient laser ion acceleration. Implementing AI into the laser system in mind, as the first step, we are introducing machine learning in ion etch pit analyses detected on plastic nuclear track detectors. Convolutional neural networks allow us to analyze big ion etch pit data with high precision and recall. We introduce one of the applications of laser-driven ion beams using AI to reconstruct vector electric and magnetic fields in laser-produced turbulent plasmas in three dimensions.

  4. Automation of etch pit analyses on solid-state nuclear track detectors with machine learning for laser-driven ion acceleration Peer-reviewed

    T. Taguchi, T. Minami, T. Hihara, F. Nikaido, T. Asai, K. Sakai, Y. Abe, A. Yogo, Y. Arikawa, H. Kohri, A. O. Tokiyasu, C. M. Chu, W. Y. Woon, S. Kodaira, M. Kanasaki, Y. Fukuda, Y. Kuramitsu

    Review of Scientific Instruments　95　(3)　2024/03/01

    Publisher: AIP Publishing

    DOI： 10.1063/5.0172202 　

    ISSN： 0034-6748

    eISSN： 1089-7623

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    Solid-state nuclear track detectors (SSNTDs) are often used as ion detectors in laser-driven ion acceleration experiments and are considered to be the most reliable ion diagnostics since they are sensitive only to ions and measure ions one by one. However, ion pit analyses require tremendous time and effort in chemical etching, microscope scanning, and ion pit identification by eyes. From a laser-driven ion acceleration experiment, there are typically millions of microscopic images, and it is practically impossible to analyze all of them by hand. This research aims to improve the efficiency and automation of SSNTD analyses for laser-driven ion acceleration. We use two sets of data obtained from calibration experiments with a conventional accelerator where ions with known nuclides and energies are generated and from actual laser experiments using SSNTDs. After chemical etching and scanning the SSNTDs with an optical microscope, we use machine learning to distinguish the ion etch pits from noises. From the results of the calibration experiment, we confirm highly accurate etch-pit detection with machine learning. We are also able to detect etch pits with machine learning from the laser-driven ion acceleration experiment, which is much noisier than calibration experiments. By using machine learning, we successfully identify ion etch pits ∼105 from more than 10 000 microscopic images with a precision of ≳95%. A million microscopic images can be examined with a recent entry-level computer within a day with high precision. Machine learning tremendously reduces the time consumption on ion etch pit analyses detected on SSNTDs.

  5. Measurement of KN scattering below the KN mass threshold

    Hiroyuki Noumi, Kentaro Inoue, Shingo Kawasaki, Shuu Aikawa, Shuhei Ajimura, Takaya Akaishi, Hidemitsu Asano, George Beer, Carolina Berucci, Mario Bragadireau, Paul Alois Buehler, Luigi Busso, Michael Cargnelli, Seonho Choi, Catalina Curceanu, Shun Enomoto, Hiroyuki Fujioka, Yuya Fujiwara, Tomokazu Fukuda, Carlo Guaraldo, Tadashi Hashimoto, Ryugo S. Hayano, Toshihiko Hiraiwa, Masami Iio, Mihai Iliescu, Yusuke Ishiguro, Shigeru Ishimoto, Takashi Ishikawa, Kenta Ithashi, Massaki Iwai, Masahiko Iwasaki, Koki Kanno, Kazuma Kato, Yuko kato, Paul Kienle, Yusuke Komatsu, Hiroshi Kou, Yue Ma, Johann Marton, Yasuyuki Matsuda, Yutaka MIzoi, Ombretta Morra, Rie Murayama, To-mofumi Nagae, Hiroaki Ohnishi, Shinji Okada, Zhadyra Omar, Haruhiko Outa, Kristian Piscicchia, Yuta Sada, Atsushi Sakaguchi, Fuminori Sakuma, Masaharu Sato, Alessadro Scordo, Michiko Sekimoto, Hexi Shi, Kotaro Shirotori, Diana Sirghi, Florin Sirghi, Ken Suzuki, Shoji Suzuki, Takatoshi Suzuki, Kiyoshi Tanida, Hideyuki Tatsuno, Atsushi O. Tokiyasu, Makoto Tokuda, Dai Tomono, Akihisa Toyoda, Kyo Tsukada, Oton Vazquez-Doce, Eberhard Widmann, Takumi Yamaga, Toshimitsu Yamazaki, Heejoong Yim, Qi Zhang, Johannes Zmeskal

    EPJ Web of Conferences　291　05011-05011　2024/02/16

    Publisher: EDP Sciences

    DOI： 10.1051/epjconf/202429105011 　

    eISSN： 2100-014X

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    Abstract. We measured πE invariant mass spectra below and above the K¯N mass threshold in the K−d → NπE reaction in order to study the K¯N interaction and the Λ(1405) resonance. This reaction can be described by the two-step process: (i) K¯N1 → K¯N followed by (ii) K¯N2 → πΣ, where N1 and N2 are nucleons bound in the deuteron. We deduced the S -wave scattering amplitude of K¯N →K¯N in the framework of the K¯N πΣ coupled channel so as to reproduce the observed πΣ spectra in the I = 0 channel. We found a resonance pole at 1417.7-7.4+6.0 (fitting error)-1.0+1.1 (systematic error) - i[26.9-7.9+6.0 (fitting error)-2.0+1.7 (systematic error)]MeV/c2.

  6. Mass-resolved ion measurement by particle counting analysis for characterizing relativistic ion beams driven by lasers Peer-reviewed

    T. Minami, A. O. Tokiyasu, H. Kohri, Y. Abe, K. Iwasaki, T. Taguchi, K. Oda, S. Suzuki, T. Asai, S. J. Tanaka, S. Isayama, M. Kanasaki, S. Kodaira, Y. Fukuda, Y. Kuramitsu

    Review of Scientific Instruments　93　(11)　113530-113530　2022/11/01

    Publisher: AIP Publishing

    DOI： 10.1063/5.0101872 　

    ISSN： 0034-6748

    eISSN： 1089-7623

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    Particle counting analysis is a possible way to characterize GeV-scale, multi-species ions produced in laser-driven experiments. We present a multi-layered scintillation detector to differentiate multi-species ions of different masses and energies. The proposed detector concept offers potential advantages over conventional diagnostics in terms of (1) high sensitivity to GeV ions, (2) realtime analysis, and (3) the ability to differentiate ions with the same charge-to-mass ratio. A novel choice of multiple scintillators with different ion stopping powers results in a significant difference in energy deposition between the scintillators, allowing accurate particle identification in the GeV range. Here, we report a successful demonstration of particle identification for heavy ions, performed at the Heavy Ion Medical Accelerator in Chiba. In the experiment, the proposed detector setup showed the ability to differentiate particles with similar atomic numbers, such as C6+ and O8+ ions, and provided an excellent energy resolution of 0.41%–1.2% (including relativistic effect, 0.51%--1.6%).

  7. Time resolution of a 1.8-m long BC-420 plastic scintillator bar with metal-packaged H11934 photomultiplier tubes

    Takatsugu Ishikawa, Manabu Miyabe, Hiroyuki Noumi, Hiroaki Ohnishi, Yuta Sada, Kotaro Shirotori, Atsushi O. Tokiyasu, Chihiro Yoshida

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment　1039　167164-167164　2022/09

    Publisher: Elsevier BV

    DOI： 10.1016/j.nima.2022.167164 　

    ISSN： 0168-9002

  8. A multi-stage scintillation counter for GeV-scale multi-species ion spectroscopy in laser-driven particle acceleration experiments

    Y. Abe, H. Kohri, A. Tokiyasu, T. Minami, K. Iwasaki, T. Taguchi, T. Asai, M. Kanasaki, S. Kodaira, S. Fujioka, Y. Kuramitsu, Y. Fukuda

    Review of Scientific Instruments　93　(6)　063502-063502　2022/06/01

    Publisher: AIP Publishing

    DOI： 10.1063/5.0078817 　

    ISSN： 0034-6748

    eISSN： 1089-7623

  9. Preparation status of missing-mass spectroscopy for 𝚵 hypernuclei with S-2S magnetic spectrometer

    Kengo Ebata, H. Fujioka, M. Fujita, T. Gogami, T. K. Harada, S. H. Hayakawa, R. Honda, Y. Ichikawa, K. Kamada, T. Kobori, K. Miwa, T. Nagae, T. Nanamura, R. Negishi, F. Oura, T. Sakao, C. Son, T. Takahashi, H. Takahashi, H. Tamura, A. O. Tokiyasu, M. Ukai, T. O. Yamamoto

    EPJ Web of Conferences　271　03008-03008　2022

    Publisher: EDP Sciences

    DOI： 10.1051/epjconf/202227103008 　

    eISSN： 2100-014X

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    J-PARC E70 experiment measures the missing-mass of Ξ hypernuclei (12ΞBe) in Hadron Experimental Facility at J-PARC. We aim to reach the best missing-mass resolution of 2 MeV/c2 in FWHM with a new magnetic spectrometer S-2S. The high-resolution spectroscopy of Ξ hypernuclei will play an important role to understand the unknown ΞN interaction. The experiment will start at the beginning of 2023. This article presents the preparation status.

  10. Search for the Lightest Double-$$\Lambda $$ Hypernucleus, $${ _{\varvec{\Lambda }\varvec{\Lambda } }^{\varvec{5 } } }$$H, at J-PARC

    Hiroyuki Fujioka, Shuhei Ajimura, Tomokazu Fukuda, Toshiyuki Gogami, Emiko Hiyama, Yuhei Morino, Toshio Motoba, Tomofumi Nagae, Sho Nagao, Akane Sakaue, Toshiyuki Takahashi, Yosuke Taki, Atsushi O. Tokiyasu, Makoto Uchida, Masaru Yosoi

    Few-Body Systems　62　(3)　2021/09

    DOI： 10.1007/s00601-021-01635-y 　

    ISSN： 0177-7963

    eISSN： 1432-5411

  11. MPV-Parallel Readout Architecture for the VME Data Acquisition System

    H. Baba, T. Ichihara, T. Isobe, T. Ohnishi, K. Yoshida, Y. Watanabe, S. Ota, H. Shimizu, S. Shimoura, S. Takeuchi, D. Nishimura, J. Zenihiro, A. O. Tokiyasu, R. Yokoyama

    IEEE TRANSACTIONS ON NUCLEAR SCIENCE　68　(8)　1841-1848　2021/08

    DOI： 10.1109/TNS.2021.3083832 　

    ISSN： 0018-9499

    eISSN： 1558-1578

  12. Differential cross sections, photon beam asymmetries, and spin density matrix elements of ω photoproduction off the proton at Eγ=1.3-2.4 GeV

    N. Muramatsu, J. K. Ahn, W. C. Chang, J. Y. Chen, M. L. Chu, S. Daté, T. Gogami, H. Goto, H. Hamano, T. Hashimoto, Q. H. He, K. Hicks, T. Hiraiwa, Y. Honda, T. Hotta, H. Ikuno, Y. Inoue, T. Ishikawa, I. Jaegle, J. M. Jo, Y. Kasamatsu, H. Katsuragawa, S. Kido, Y. Kon, S. Masumoto, Y. Matsumura, M. Miyabe, K. Mizutani, T. Nakamura, T. Nakano, T. Nam, T. N.T. Ngan, M. Niiyama, Y. Nozawa, Y. Ohashi, H. Ohnishi, T. Ohta, K. Ozawa, C. Rangacharyulu, S. Y. Ryu, Y. Sada, T. Shibukawa, H. Shimizu, R. Shirai, K. Shiraishi, E. A. Strokovsky, Y. Sugaya, M. Sumihama, S. Suzuki, S. Tanaka, Y. Taniguchi, A. Tokiyasu, N. Tomida, Y. Tsuchikawa, T. Ueda, H. Yamazaki, R. Yamazaki, Y. Yanai, T. Yorita, C. Yoshida, M. Yosoi

    Physical Review C　102　(2)　2020/08

    DOI： 10.1103/PhysRevC.102.025201 　

    ISSN： 2469-9985

    eISSN： 2469-9993

  13. Search for η′ Bound Nuclei in the C 12 (γ,p) Reaction with Simultaneous Detection of Decay Products International-journal

    M. Yosoi, N. Tomida, N. Muramatsu, M. Niiyama, J. K. Ahn, W. C. Chang, J. Y. Chen, M. L. Chu, S. Daté, T. Gogami, H. Goto, H. Hamano, T. Hashimoto, Q. H. He, K. Hicks, T. Hiraiwa, Y. Honda, T. Hotta, H. Ikuno, Y. Inoue, T. Ishikawa, I. Jaegle, J. M. Jo, Y. Kasamatsu, H. Katsuragawa, S. Kido, Y. Kon, T. Maruyama, S. Masumoto, Y. Matsumura, M. Miyabe, K. Mizutani, H. Nagahiro, T. Nakamura, T. Nakano, T. Nam, T. N.T. Ngan, Y. Nozawa, Y. Ohashi, H. Ohnishi, T. Ohta, K. Ozawa, C. Rangacharyulu, S. Y. Ryu, Y. Sada, M. Sasagawa, T. Shibukawa, H. Shimizu, R. Shirai, K. Shiraishi, E. A. Strokovsky, Y. Sugaya, M. Sumihama, S. Suzuki, S. Tanaka, A. Tokiyasu, Y. Tsuchikawa, T. Ueda, H. Yamazaki, R. Yamazaki, Y. Yanai, T. Yorita, C. Yoshida

    Physical Review Letters　124　(20)　202501-202501　2020/05/22

    DOI： 10.1103/PhysRevLett.124.202501 　

    ISSN： 0031-9007

    eISSN： 1079-7114

  14. Ηn scattering parameters and possible η0d bound state from η photoproduction on the deuteron

    T. Ishikawa, K. Aoki, H. Fujimura, H. Fukasawa, H. Fujioka, R. Hashimoto, Q. He, Y. Honda, T. Hotta, Y. Inoue, K. Itahashi, T. Iwata, S. Kaida, H. Kanda, J. Kasagi, A. Kawano, S. Kusawaki, H. Kawai, K. Maeda, S. Masumoto, Y. Matsumura, M. Miyabe, F. Miyahara, K. Mochizuki, S. Miyata, N. Muramatsu, A. Nakamura, K. Nawa, T. Nishi, S. Ohgushi, Y. Okada, H. Ohnishi, Y. Onodera, K. Ozawa, Y. Sakamoto, M. Sato, H. Shimizu, H. Sugai, K. Suzuki, R. Shirai, M. Tabata, Y. Tajima, S. Takahashi, Y. Taniguchi, A. O. Tokiyasu, Y. Tsuchikawa, H. Yamazaki, R. Yamazaki, C. Yoshida, H. Y. Yoshida

    Acta Physica Polonica B　51　(1)　27-32　2020

    DOI： 10.5506/APhysPolB.51.27 　

    ISSN： 0587-4254

    eISSN： 1509-5770

  15. Performance of the FOREST/BLC Spectrometer for Study of the (formula presented)-nucleon Interaction via the (formula presented) Reaction

    S. Miyata, K. Aoki, H. Fujioka, Y. Honda, T. Hotta, T. Ishikawa, K. Itahashi, H. Kanda, H. Kawai, K. Maeda, M. Miyabe, Y. Matsumura, N. Muramatsu, H. Ohnishi, K. Ozawa, H. Shimizu, M. Tabata, A. O. Tokiyasu, Y. Tsuchikawa, T. Ueda, C. Yoshida

    Springer Proceedings in Physics　238　705-708　2020

    DOI： 10.1007/978-3-030-32357-8_113 　

    ISSN： 0930-8989

    eISSN： 1867-4941

  16. Measurement of neutral pion photoproduction off the proton with the large acceptance electromagnetic calorimeter BGOegg

    N. Muramatsu, J. K. Ahn, W. C. Chang, J. Y. Chen, M. L. Chu, S. Daté, T. Gogami, H. Goto, H. Hamano, T. Hashimoto, Q. H. He, K. Hicks, T. Hiraiwa, Y. Honda, T. Hotta, H. Ikuno, Y. Inoue, T. Ishikawa, I. Jaegle, J. M. Jo, Y. Kasamatsu, H. Katsuragawa, S. Kido, Y. Kon, S. Masumoto, Y. Matsumura, M. Miyabe, K. Mizutani, T. Nakamura, T. Nakano, T. Nam, T. N.T. Ngan, M. Niiyama, Y. Nozawa, Y. Ohashi, H. Ohnishi, T. Ohta, K. Ozawa, C. Rangacharyulu, S. Y. Ryu, Y. Sada, M. Sasagawa, T. Shibukawa, H. Shimizu, R. Shirai, K. Shiraishi, E. A. Strokovsky, Y. Sugaya, M. Sumihama, S. Suzuki, S. Tanaka, A. Tokiyasu, N. Tomida, Y. Tsuchikawa, T. Ueda, H. Yamazaki, R. Yamazaki, Y. Yanai, T. Yorita, C. Yoshida, M. Yosoi

    Physical Review C　100　(5)　2019/11/08

    DOI： 10.1103/PhysRevC.100.055202 　

    ISSN： 2469-9985

    eISSN： 2469-9993

  17. Spectroscopic study of the Λ(1405) resonance via the d (K-, n) reaction at J-PARC

    H. Asano, S. Aikawa, S. Ajimura, T. Akaishi, G. Beer, C. Berucci, M. Bragadireanu, P. Buehler, L. Busso, M. Cargnelli, S. Choi, C. Curceanu, S. Enomoto, H. Fujioka, Y. Fujiwara, T. Fukuda, C. Guaraldo, T. Hashimoto, R. S. Hayano, T. Hiraiwa, M. Iio, M. Iliescu, K. Inoue, Y. Ishiguro, T. Ishikawa, S. Ishimoto, K. Itahashi, M. Iwai, M. Iwasaki, K. Kanno, K. Kato, Y. Kato, S. Kawasaki, P. Kienle, Y. Komatsu, H. Kou, Y. Ma, J. Marton, Y. Matsuda, Y. Mizoi, O. Morra, T. Nagae, H. Noumi, H. Ohnishi, S. Okada, Z. Omar, H. Outa, K. Piscicchia, Y. Sada, A. Sakaguchi, F. Sakuma, M. Sato, A. Scordo, M. Sekimoto, H. Shi, K. Shirotori, D. Sirghi, F. Sirghi, K. Suzuki, S. Suzuki, T. Suzuki, K. Tanida, H. Tatsuno, A. O. Tokiyasu, M. Tokuda, D. Tomono, A. Toyoda, K. Tsukada, O. Vazquez Doce, E. Widmann, T. Yamaga, T. Yamazaki, H. Yim, Q. Zhang, J. Zmeskal

    AIP Conference Proceedings　2130　2019/07/25

    DOI： 10.1063/1.5118415 　

    ISSN： 0094-243X

    eISSN： 1551-7616

  18. Profile measurement of circulating electrons in a synchrotron by inserting a carbon wire

    Y. Obara, T. Ishikawa, H. Hama, F. Hinode, H. Kanda, S. Kashiwagi, M. Miyabe, T. Muto, K. Ozawa, H. Shimizu, A. O. Tokiyasu

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment　922　108-113　2019/04

    DOI： 10.1016/j.nima.2019.01.007 　

    ISSN： 0168-9002

    eISSN： 1872-9576

  19. Development of a new photon tagging system for GeV-γ beam line

    M. Sasaki, T. Ishikawa, M. Iwasa, M. Miyabe, N. Muramatsu, H. Shimizu, Y. Tajima, A. O. Tokiyasu, H. Yamazaki, H. Y. Yoshida

    2017 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2017 - Conference Proceedings　72　200-200　2018/11/12

    DOI： 10.1109/NSSMIC.2017.8532685 　

    ISSN： 1095-7863

  20. 21aAB-1 Performance evaluation of Sampling Calorimeter to be used in the SPring-8 LEPS2 experiment

    Yanai Y., Yosoi M., Goto H., Tokiyasu A., Inoue Y., Sasagawa M.

    Meeting Abstracts of the Physical Society of Japan　71　339-339　2016

    Publisher: The Physical Society of Japan (JPS)

    DOI： 10.11316/jpsgaiyo.71.1.0_339 　

    ISSN： 2189-079X

  21. Precise determination of the proton charge radius by elastic electron scattering at ultra-low momentum transfer.

    Suda Toshimi

    Meeting Abstracts of the Physical Society of Japan　71　262-262　2016

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.71.2.0_262 　

  22. Application of an X-Ray Flat Panel Sensor to a GeV Region Gamma-Ray Beam Profile Monitor Peer-reviewed

    Hiroki Kanda, Kazuhisa Honda, Takatsugu Ishikawa, Masashi Kaneta, Kazushige Maeda, Manabu Miyabe, Yuta Muroi, Wataru Nakai, Satoshi N. Nakamura, Aki Ninomiya, Yuki Obara Kyoichiro Ozawa, Keiichi Ozeki, Takayuki Sasaki, Hajime Shimizu, Atsushi O. Tokiyasu

    2016 IEEE NUCLEAR SCIENCE SYMPOSIUM, MEDICAL IMAGING CONFERENCE AND ROOM-TEMPERATURE SEMICONDUCTOR DETECTOR WORKSHOP (NSS/MIC/RTSD)　2016

    ISSN： 1095-7863

  23. Development of a high-intensity photon-beam profile monitor Peer-reviewed

    Takatsugu Ishikawa, Hisako Fujimura, Ryo Hashimoto, Yuki Honda, Takashi Ishida, Hiroki Kanda, Satoshi Kido, Yuji Matsumura, Manabu Miyabe, Ikuro Nagasawa, Ken'ichi Nanbu, Hajime Shimizu, Koutaku Suzuki, Ken Takahashi, Atsushi O. Tokiyasu, Yusuke Tsuchikawa, Hirohito Yamazaki

    2016 IEEE NUCLEAR SCIENCE SYMPOSIUM, MEDICAL IMAGING CONFERENCE AND ROOM-TEMPERATURE SEMICONDUCTOR DETECTOR WORKSHOP (NSS/MIC/RTSD)　2016

    ISSN： 1095-7863

  24. J-PARC E19 Experiment: Pentaquark Θ+ Search in Hadronic Reaction at J-PARC Peer-reviewed

    Tomonori N. Takahashi, Tokyo U, Nishina Ctr, RIKEN, Osaka U, Res. Ctr. Nucl. Phys, Satoshi Adachi, Kyoto, Michelangelo Agnello, Turin Polytechnic, INFN, Turin, Shuhei Ajimura, Osaka U, Res. Ctr. Nucl. Phys, Kanae Aoki (KEK, Tsukuba, Hyoung Chan Bhang, Seoul Natl, Be, Bassalleck (New, Mexico U, Elena Botta, INFN, Turin, Turin U, Stefania Bufalino, INFN, Turin, Nobuyuki Chiga, Tohoku U, Hiroyuki Ekawa, yo, Petr Evtoukhovitch, Dubna, JINR, Alessandro Feliciello, INFN, Turin, Hiroyuki Fujioka, Kyoto, Shuhei Hayakawa, Osaka U, Inst. Phys, Fumiki Hiruma, Ryotaro Honda, Tohoku U, Kenji Hosomi, Tohoku U, JAEA, Ibaraki, Yudai Ichikawa, Kyoto, Masaharu Ieiri, Youichi Igarashi, KEK, Tsukuba, Ken'ichi Imai, JAEA, Ibaraki, Naoya Ishibashi, Osaka U, Inst. Phys, Shigeru Ishimoto (KEK, Tsukuba, Kenta Itahashi, Nishina Ctr, RIKEN, Ruri Iwasaki, KEK, Tsukuba, Chang Woo Joo, eoul, Natl, Shunsuke Kanatsuki, Kyoto U, Mi Jung Kim, Sun Ji Kim, Ryuta Kiuchi, Seoul Natl. U, Takeshi Koike, Tohoku U, Yusuke Komatsu, Tokyo, Vyacheslav Vasil'evich Kulikov, Moscow, ITEP, Simonetta Marcello, INFN, Turin, Turin U, Shinichi Masumoto, Tokyo U, Yuki Matsumoto, Tohoku U, Kenji Matsuoka, Osaka U, Inst. Phys, Koji Miwa, Tohoku U, Manabu Moritsu, Osaka U, Res. Ctr, Nucl. Phys, Kyoto U, Tomofumi Nagae, Kyoto, Megumi Naruki, Kyoto U, KEK, Tsukuba, Masayuki Niiyama, Kyoto, Hiroyuki Noumi, Osaka U, Res. Ctr. Nucl. Phys, Yuki Nozawa, yoto, Ryosuke Ota, Osaka U, Inst. Phys, Kyoichiro Ozawa, Naohito Saito, KEK, Tsukuba, Atsushi Sakaguchi, Osaka U, Inst. Phys, Hiroyuki Sako (JAEA, Ibaraki, Valentin Samoilov, Dubna, JINR, Misako Sato, Tohoku, Susumu Sato, JAEA, Ibaraki, Yoshinori Sato, Shin'ya Sawada, Michiko Sekimoto, KEK, Tsukuba, Kotaro Shirotori, Osaka U, Res. Ctr, Nucl. Phys, Tohoku U, JAEA, Ibaraki, Hitoshi Sugimura, Kyoto U, JAEA, Ibaraki, Shoji Suzuki, Hitoshi Takahashi, Toshiyuki Takahashi, KEK, Tsukuba, Hirokazu Tamura, Tohoku U, Toshiyuki Tanaka, Osaka U, Inst. Phys, Kiyoshi Tanida, Seoul Natl. U, Atsushi O. Tokiyasu, Osaka U, Res. Ctr, Nucl. Phys, Kyoto U, Natsuki Tomida, Kyoto U, Zviadi Tsamalaidze, Dubna, JINR, Mifuyu Ukai, Kazuya Yagi, Takeshi O. Yamamoto, Tohoku U, Seong Bae Yang, Seoul Natl, U, Yoshio Yonemoto, Tohoku U, Choong Jae Yoo, Seoul, Natl, Kotaro Yoshida, Osaka U, Inst. Phys

    JPS Conf.Proc　8　022011　2015/09

    DOI： 10.7566/JPSCP.8.022011 　

  25. J-PARC E27 Experiment to Search for a K$^-$pp Bound State Peer-reviewed

    Yudai Ichikawa, Tomofumi Nagae, Hyoungchan Bhang, Stefania Bufalino, Hiroyuki Ekawa, Petr Evtoukhovitch, Alessandro Feliciello, Hiroyuki Fujioka, Shoichi Hasegawa, Shuhei Hayakawa, Ryotaro Honda, Kenji Hosomi, Ken'ichi Imai, Shigeru Ishimoto, Changwoo Joo, Shunsuke Kanatsuki, Ryuta Kiuchi, Takeshi Koike, Harphool Kumawat, Yuki Matsumoto, Koji Miwa, Manabu Moritsu, Megumi Naruki, Masayuki Niiyama, Yuki Nozawa, Ryosuke Ota, Atsushi Sakaguchi, Hiroyuki Sako, Valentin Samoilov, Susumu Sato, Kotaro Shirotori, Hitoshi Sugimura, Shoji Suzuki, Toshiyuki Takahashi, Tomonori N. Takahashi, Hirokazu Tamura, Toshiyuki Tanaka, Kiyoshi Tanida, Atsushi O. Tokiyasu, Zviadi Tsamalaidze, Bidyut Roy, Mifuyu Ukai, Takeshi O. Yamamoto, Seongbae Yang

    JPS Conference Proceedings　8　021020 1-7　2015/09

    DOI： 10.7566/JPSCP.8.021020 　

  26. High-resolution search for the Θ+ pentaquark via a pion-induced reaction at J-PARC

    M. Moritsu, S. Adachi, M. Agnello, S. Ajimura, K. Aoki, H. C. Bhang, B. Bassalleck, E. Botta, S. Bufalino, N. Chiga, H. Ekawa, P. Evtoukhovitch, A. Feliciello, H. Fujioka, S. Hayakawa, F. Hiruma, R. Honda, K. Hosomi, Y. Ichikawa, M. Ieiri, Y. Igarashi, K. Imai, N. Ishibashi, S. Ishimoto, K. Itahashi, R. Iwasaki, C. W. Joo, S. Kanatsuki, M. J. Kim, S. J. Kim, R. Kiuchi, T. Koike, Y. Komatsu, V. V. Kulikov, S. Marcello, S. Masumoto, Y. Matsumoto, K. Matsuoka, K. Miwa, T. Nagae, M. Naruki, M. Niiyama, H. Noumi, Y. Nozawa, R. Ota, K. Ozawa, N. Saito, A. Sakaguchi, H. Sako, V. Samoilov, M. Sato, S. Sato, Y. Sato, S. Sawada, M. Sekimoto, K. Shirotori, H. Sugimura, S. Suzuki, H. Takahashi, T. Takahashi, T. N. Takahashi, H. Tamura, T. Tanaka, K. Tanida, A. O. Tokiyasu, N. Tomida, Z. Tsamalaidze, M. Ukai, K. Yagi, T. O. Yamamoto, S. B. Yang, Y. Yonemoto, C. J. Yoon, K. Yoshida

    Physical Review C - Nuclear Physics　90　(3)　2014/09/22

    DOI： 10.1103/PhysRevC.90.035205 　

    ISSN： 0556-2813

    eISSN： 1089-490X

  27. Search for <inf>Λ</inf>6H hypernucleus by the 6Li(π-,K+) reaction at p<inf>π</inf>-=1.2 GeV/c

    H. Sugimura, M. Agnello, J. K. Ahn, S. Ajimura, Y. Akazawa, N. Amano, K. Aoki, H. C. Bhang, N. Chiga, M. Endo, P. Evtoukhovitch, A. Feliciello, H. Fujioka, T. Fukuda, S. Hasegawa, S. Hayakawa, R. Honda, K. Hosomi, S. H. Hwang, Y. Ichikawa, Y. Igarashi, K. Imai, N. Ishibashi, R. Iwasaki, C. W. Joo, R. Kiuchi, J. K. Lee, J. Y. Lee, K. Matsuda, Y. Matsumoto, K. Matsuoka, K. Miwa, Y. Mizoi, M. Moritsu, T. Nagae, S. Nagamiya, M. Nakagawa, M. Naruki, H. Noumi, R. Ota, B. J. Roy, P. K. Saha, A. Sakaguchi, H. Sako, C. Samanta, V. Samoilov, Y. Sasaki, S. Sato, M. Sekimoto, Y. Shimizu, T. Shiozaki, K. Shirotori, T. Soyama, T. Takahashi, T. N. Takahashi, H. Tamura, K. Tanabe, T. Tanaka, K. Tanida, A. O. Tokiyasu, Z. Tsamalaidze, M. Ukai, T. O. Yamamoto, Y. Yamamoto, S. B. Yang, K. Yoshida

    Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics　729　39-44　2014/02/05

    DOI： 10.1016/j.physletb.2013.12.062 　

    ISSN： 0370-2693

    eISSN： 1873-2445

  28. Study on H-6(Lambda) hypernucleus by the (pi(-), K+) reaction at J-PARC

    H. Sugimura, M. Agnello, J. K. Ahn, S. Ajimura, Y. Akazawa, N. Amano, K. Aoki, H. C. Bhang, M. Endo, P. Evtoukhovitch, A. Feliciello, H. Fujioka, T. Fukuda, S. Hasegawa, S. Hayakawa, R. Honda, K. Hosomi, S. H. Hwang, Y. Ichikawa, Y. Igarashi, K. Imai, N. Ishibashi, R. Iwasaki, C. W. Joo, R. Kiuchi, J. K. Lee, J. Y. Lee, K. Matsuda, Y. Matsumoto, K. Matsuoka, K. Miwa, Y. Mizoi, M. Moritsu, T. Nagae, S. Nagamiya, M. Nakagawa, M. Naruki, H. Noumi, R. Ota, B. J. Roy, P. K. Saha, A. Sakaguchi, H. Sako, C. Samanta, V. Samoilov, Y. Sasaki, S. Sato, M. Sekimoto, Y. Shimizu, T. Shiozaki, K. Shirotori, T. Soyama, T. Takahashi, T. N. Takahashi, H. Tamura, K. Tanabe, T. Tanaka, K. Tanida, A. O. Tokiyasu, Z. Tsamalaidze, M. Ukai, T. O. Yamamoto, Y. Yamamoto, S. B. Yang, K. Yoshida

    INPC 2013 - INTERNATIONAL NUCLEAR PHYSICS CONFERENCE, VOL. 2　66　2014

    DOI： 10.1051/epjconf/20146609017 　

    ISSN： 2100-014X

  29. Study on <inf>Λ</inf>6H hypernucleus by the (π -, K +) reaction at J-PARC

    H. Sugimura, M. Agnello, J. K. Ahn, S. Ajimura, Y. Akazawa, N. Amano, K. Aoki, H. C. Bhang, M. Endo, P. Evtoukhovitch, A. Feliciello, H. Fujioka, T. Fukuda, S. Hasegawa, S. Hayakawa, R. Honda, K. Hosomi, S. H. Hwang, Y. Ichikawa, Y. Igarashi, K. Imai, N. Ishibashi, R. Iwasaki, C. W. Joo, R. Kiuchi, J. K. Lee, J. Y. Lee, K. Matsuda, Y. Matsumoto, K. Matsuoka, K. Miwa, Y. Mizoi, M. Moritsu, T. Nagae, S. Nagamiya, M. Nakagawa, M. Naruki, H. Noumi, R. Ota, B. J. Roy, P. K. Saha, A. Sakaguchi, H. Sako, C. Samanta, V. Samoilov, Y. Sasaki, S. Sato, M. Sekimoto, Y. Shimizu, T. Shiozaki, K. Shirotori, T. Soyama, T. Takahashi, T. N. Takahashi, H. Tamura, K. Tanabe, T. Tanaka, K. Tanida, A. O. Tokiyasu, Z. Tsamalaidze, M. Ukai, T. O. Yamamoto, Y. Yamamoto, S. B. Yang, K. Yoshida

    EPJ Web of Conferences　66　2014

    DOI： 10.1051/epjconf/20146609017 　

    ISSN： 2101-6275

    eISSN： 2100-014X

  30. Search for the K-pp bound state via γd→K+π-X reaction at E<inf>γ</inf>=1.5-2.4GeV

    A. O. Tokiyasu, M. Niiyama, J. D. Parker, D. S. Ahn, J. K. Ahn, S. Ajimura, H. Akimune, Y. Asano, W. C. Chang, J. Y. Chen, S. Daté, H. Ejiri, H. Fujimura, M. Fujiwara, S. Fukui, S. Hasegawa, K. Hicks, K. Horie, T. Hotta, S. H. Hwang, K. Imai, T. Ishikawa, T. Iwata, Y. Kato, H. Kawai, K. Kino, H. Kohri, Y. Kon, N. Kumagai, D. L. Lin, Y. Maeda, S. Makino, T. Matsuda, T. Matsumura, N. Matsuoka, T. Mibe, M. Miyabe, M. Miyachi, N. Muramatsu, R. Murayama, T. Nakano, Y. Nakatsugawa, M. Nomachi, Y. Ohashi, H. Ohkuma, T. Ohta, T. Ooba, D. S. Oshuev, C. Rangacharyulu, S. Y. Ryu, A. Sakaguchi, T. Sawada, P. M. Shagin, Y. Shiino, H. Shimizu, E. A. Strokovsky, Y. Sugaya, M. Sumihama, J. L. Tang, Y. Toi, H. Toyokawa, T. Tsunemi, M. Uchida, M. Ungaro, A. Wakai, C. W. Wang, S. C. Wang, K. Yonehara, T. Yorita, M. Yoshimura, M. Yosoi, R. G.T. Zegers

    Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics　728　616-621　2014

    DOI： 10.1016/j.physletb.2013.12.039 　

    ISSN： 0370-2693

    eISSN： 1873-2445

  31. Search for the Θ + pentaquark at J-PARC

    M. Moritsu, S. Adachi, M. Agnello, S. Ajimura, K. Aoki, H. C. Bhang, B. Bassalleck, E. Botta, S. Bufalino, N. Chiga, H. Ekawa, P. Evtoukhovitch, A. Feliciello, H. Fujioka, S. Hayakawa, F. Hiruma, R. Honda, K. Hosomi, Y. Ichikawa, M. Ieiri, Y. Igarashi, K. Imai, N. Ishibashi, S. Ishimoto, K. Itahashi, R. Iwasaki, C. W. Joo, S. Kanatsuki, M. J. Kim, S. J. Kim, R. Kiuchi, T. Koike, Y. Komatsu, V. V. Kulikov, S. Marcello, S. Masumoto, Y. Matsumoto, K. Matsuoka, K. Miwa, T. Nagae, M. Naruki, M. Niiyama, H. Noumi, Y. Nozawa, R. Ota, K. Ozawa, N. Saito, A. Sakaguchi, H. Sako, V. Samoilov, M. Sato, S. Sato, Y. Sato, S. Sawada, M. Sekimoto, K. Shirotori, H. Sugimura, S. Suzuki, H. Takahashi, T. Takahashi, T. N. Takahashi, H. Tamura, T. Tanaka, K. Tanida, A. O. Tokiyasu, N. Tomida, Z. Tsamalaidze, M. Ukai, K. Yagi, T. O. Yamamoto, S. B. Yang, Y. Yonemoto, C. J. Yoon, K. Yoshida

    Nuclear Physics A　914　91-96　2013/09

    DOI： 10.1016/j.nuclphysa.2013.01.010 　

    ISSN： 0375-9474

    eISSN： 1873-1554

  32. Search for Pentaquark Θ+ in Hadronic Reaction at J-PARC

    M. Naruki, S. Adachi, M. Agnello, S. Ajimura, K. Aoki, H. Bang, B. Bassalleck, E. Botta, S. Bufalino, H. Ekawa, P. Evtoukhovitch, A. Feliciello, H. Fujioka, S. Hayakawa, F. Hiruma, R. Honda, K. Hosomi, Y. Ichikawa, M. Ieiri, Y. Igarashi, K. Imai, N. Ishibashi, S. Ishimoto, K. Itahashi, R. Iwasaki, G. G. Joo, S. Kanatsuki, M. J. Kim, S. J. Kim, R. Kiuchi, T. Koike, Y. Komatsu, V. V. Kulikov, S. Marcello, S. Masumoto, Y. Matsumoto, K. Matsuoka, K. Miwa, M. Moritsu, T. Nagae, M. Niiyama, H. Noumi, Y. Nozawa, R. Ota, K. Ozawa, N. Saito, A. Sakaguchi, H. Sako, V. Samoilov, M. Sato, S. Sato, Y. Sato, S. Sawada, M. Sekimoto, K. Shirotori, H. Sugimura, S. Suzuki, T. N. Takahashi, H. Takahashi, T. Takahashi, H. Tamura, T. Tanaka, K. Tanida, A. O. Tokiyasu, N. Tomida, Z. Tsamalaidze, M. Ukai, K. Yagi, T. O. Yamamoto, S. B. Yang, Y. Yonemoto, C. J. Yoon, K. Yoshida

    Few-Body Systems　54　(7-10)　955-960　2013/08

    DOI： 10.1007/s00601-013-0685-2 　

    ISSN： 0177-7963

    eISSN： 1432-5411

  33. J-PARC E27 Experiment to Search for a Nuclear Kaon Bound State K-pp Peer-reviewed

    Y. Ichikawa, H. C. Bhang, S. Bufalino, H. Ekawa, P. Evtoukhovitch, A. Feliciello, H. Fujioka, S. Hasegawa, S. Hayakawa, R. Honda, K. Hosomi, K. Imai, S. Ishimoto, C. W. Joo, S. Kanatsuki, R. Kiuchi, T. Koike, H. Kumawat, Y. Matsumoto, K. Miwa, M. Moritsu, T. Nagae, M. Naruki, M. Niiyama, Y. Nozawa, R. Ota, A. Sakaguchi, H. Sako, V. Samoilov, S. Sato, K. Shirotori, H. Sugimura, S. Suzuki, T. Takahashi, T. N. Takahashi, H. Tamura, T. Tanaka, K. Tanida, A. O. Tokiyasu, Z. Tsamalaidze, B. J. Roy, M. Ukai, T. O. Yamamoto, S. B. Yang

    Few-Body Systems　54　(7-10)　1191-1194　2013/08

    DOI： 10.1007/s00601-013-0668-3 　

    ISSN： 0177-7963

    eISSN： 1432-5411

  34. Search for the K̄NN bound state at LEPS/SPring-8

    Atsushi Tokiyasu

    Proceedings of Science　2013

    eISSN： 1824-8039

  35. Search for the θ+ pentaquark via the π-p→K-X reaction at 1.92GeV/c International-journal Peer-reviewed

    K. Shirotori, T. N. Takahashi, S. Adachi, M. Agnello, S. Ajimura, K. Aoki, H. C. Bhang, B. Bassalleck, E. Botta, S. Bufalino, N. Chiga, P. Evtoukhovitch, A. Feliciello, H. Fujioka, F. Hiruma, R. Honda, K. Hosomi, Y. Ichikawa, M. Ieiri, Y. Igarashi, K. Imai, N. Ishibashi, S. Ishimoto, K. Itahashi, R. Iwasaki, C. W. Joo, M. J. Kim, S. J. Kim, R. Kiuchi, T. Koike, Y. Komatsu, V. V. Kulikov, S. Marcello, S. Masumoto, K. Matsuoka, K. Miwa, M. Moritsu, T. Nagae, M. Naruki, M. Niiyama, H. Noumi, K. Ozawa, N. Saito, A. Sakaguchi, H. Sako, V. Samoilov, M. Sato, S. Sato, Y. Sato, S. Sawada, M. Sekimoto, H. Sugimura, S. Suzuki, H. Takahashi, T. Takahashi, H. Tamura, T. Tanaka, K. Tanida, A. O. Tokiyasu, N. Tomida, Z. Tsamalaidze, M. Ukai, K. Yagi, T. O. Yamamoto, S. B. Yang, Y. Yonemoto, C. J. Yoon, K. Yoshida

    Physical Review Letters　109　(13)　132002-132002　2012/09/26

    DOI： 10.1103/PhysRevLett.109.132002 　

    ISSN： 0031-9007

    eISSN： 1079-7114

  36. Beam and SKS spectrometers at the K1.8 beam line Toshiyuki Takahashi1 Peer-reviewed

    Satoshi Adachi, Michelangelo Agnello, Kanae Aoki, Osamu Araoka, Bernd Bassalleck, Elena Botta, Stefania Bufalino, Nobuyuki Chiga, Petr Evtoukhovitch, Alessandro Feliciello, Juergen Franz, Hiroyuki Fujioka, Shuhei Hayakawa, Erina Hirose, Ryotaro Honda, Kenji Hosomi, Yudai Ichikawa, Youichi Igarashi, Masahisa Iida, Masahiro Ikeno, Kenta Itahashi, Naoya Ishibashi, Shigeru Ishimoto, Ruri Iwasaki, Yutaka Kakiguchi, Katsuyu Kasami, Sunji Kim, Ryuta Kiuchi, Takeshi Koike, Yusuke Komatsu, Alexandr Kustov, David Mjavia, Yasuhiro Makida, Simonetta Marcello, Tomofumi Maruta, Shinichi Masumoto, Kenji Matsuoka, Koji Miwa, Anatolii Moiseenko, Manabu Moritsu, Tomofumi Nagae, Megumi Naruki, Hiroyuki Noumi, Hirokazu Ohhata, Takahiro Okamura, Ryosuke Ota, Masatoshi Saito, Atsushi Sakaguchi, Valentin Samoilov, Misako Sato, Yoshinori Sato, Michiko Sekimoto, Yoshihisa Shirakabe, Kotaro Shirotori, Hitoshi Sugimura, Shoji Suzuki, Yoshihiro Suzuki, Hitoshi Takahashi, Tomonori N. Takahashi, Hirokazu Tamura, Manobu Tanaka, Kazuya Tauchi, Toshiyuki Tanaka, Kiyoshi Tanida, Atsushi O. Tokiyasu, Kotaro Yoshida, Akihisa Toyoda, Zviadi Tsamalaidze, Tomohisa Uchida, Mifuyu Ukai, Hiroaki Watanabe, Takeshi O. Yamamoto, Yoshio Yonemoto, Choong Jae Yoon

    Progress of Theoretical and Experimental Physics　2012　(1)　2012/01/01

    DOI： 10.1093/ptep/pts023 　

    ISSN： 2050-3911

    eISSN： 2050-3911

Show all ︎Show first 5

Misc. 89

  1. Prospects for Pentaquark Baryon Search with the Upgraded LEPS2 Facility

    T. Nakano, S. Ajimura, Y. Asano, S. Dat'e, T. Hashimoto, A. Higashi, T. Hotta, T. Ishikawa, H. Katsuragawa, R. Kobayakawa, H. Kohri, K. Mizutani, Y. Ohashi, H. Ohkuma, S. Y. Ryu, S. Suzuki, S. Tanaka, K. Watanabe, B. Yan, T. Yorita, M. Yosoi, G. Kojima, M. Miyabe, N. Muramatsu, H. Ohnishi, Y. Sada, H. Shimizu, A. O. Tokiyasu, M. Niiyama, K. Nishi, J. K. Ahn, Y. Ma, T. H. Nam, C. Rangacharyulu, M. Sumihama, C. Yoshida

    2025/03/04

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    We present prospects for the $\Theta^+$ pentaquark baryon search using the newly constructed LEPS2 facility at SPring-8. The LEPS2 detector system features significant improvements in acceptance for multi-particle final states compared to previous experiments. Our search employs two complementary strategies: direct production in the $\gamma n \to K^-\Theta^+$ reaction using a liquid deuterium target with a photon beam up to 2.4 GeV, and $\bar{K}^{*0}$-associated $\Theta^+$ production using a liquid hydrogen target with a photon beam up to 2.9 GeV. The extended acceptance covers both forward and large angle regions, effectively spanning the kinematic regions explored by previous LEPS and CLAS experiments. The large acceptance and improved resolution of LEPS2, combined with these complementary approaches, provide unprecedented sensitivity for establishing the existence of the $\Theta^+$ or placing definitive upper limits on its production.

  2. Performance Evaluation of Electron Multiplier Tubes as a High-Intensity Muon Beam Monitor of Accelerator Neutrino Experiments

    Takashi Honjo, Yosuke Ashida, Oderich F Auersperg-Castell, Megan Friend, Ian Heitkamp, Atsuko K Ichikawa, Masaki Ishitsuka, Nao Izumi, Sohei Kasama, Shigeru Kashiwagi, Yuma Kawamura, Tatsuya Kikawa, Takuya Kobata, Tsunayuki Matsubara, Manabu Miyabe, Kiseki D Nakamura, Hina Nakamura, Yukine Sato, Ken Sakashita, Yoshihiro Seiya, Kouichi Takifuji, Atsushi Tokiyasu, Tatsuya Yamamoto, Kazuhiro Yamamoto, Kenji Yasutome

    Progress of Theoretical and Experimental Physics　2024　(12)　2024/11/14

    Publisher: Oxford University Press (OUP)

    DOI： 10.1093/ptep/ptae172 　

    eISSN： 2050-3911

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    Abstract Upgrade work towards increasing the beam intensity of the neutrino beamline at the Japan Proton Accelerator Research Complex (J-PARC) is underway. Monitoring tertiary muon beams is essential for stable operation of the beamline. Accordingly, we plan to replace the present muon monitor sensors with electron multiplier tubes (EMTs). We investigated the radiation tolerance and linearity response of EMTs using a 90 MeV electron beam. EMTs were irradiated with electrons up to 470 nC. EMTs show higher radiation tolerance than the Si sensors which are presently used as one of the muon monitor detectors for the Tokai-to-Kamioka (T2K) long-baseline neutrino experiment at J-PARC. The integrated charge yield decrease is found to be less than 8% after a beam irradiation equivalent to 132 days of operation at the future J-PARC beam power of 1.3 MW. The EMTs show linearity better than $\pm$5% up to the future beam intensity. The observed yield decrease is likely due to dynode deterioration, based on detailed investigation. The studies described here confirm that EMTs can be used as a high-intensity muon beam monitor. Owing to the reported results, we are proceeding with the installation in the J-PARC neutrino beamline.

  3. Study of in-medium effect on the mass of η′ mesons at the BGOegg experiment

    松村裕二, 清水肇, 村松憲仁, 岡部雅大, 時安敦史, 橋本敏和, 宮部学

    日本物理学会講演概要集(CD-ROM)　78　(1)　2023

    ISSN： 2189-079X

  4. Pole position of $Λ(1405)$ measured in $d(K^-,n)πΣ$ reactions

    J-PARC E31 Collaboration, :, S. Aikawa, S. Ajimura, T. Akaishi, H. Asano, G. Beer, C. Berucci, M. Bragadireanu, P. Buehler, L. Busso, M. Cargnelli, S. Choi, C. Curceanu, S. Enomoto, H. Fujioka, Y. Fujiwara, T. Fukuda, C. Guaraldo, T. Hashimoto, R. S. Hayano, T. Hiraiwa, M. Iio, M. Iliescu, K. Inoue, Y. Ishiguro, S. Ishimoto, T. Ishikawa, K. Itahashi, M. Iwai, M. Iwasaki, K. Kanno, K. Kato, Y. Kato, S. Kawasaki, P. Kienle, Y. Komatsu, H. Kou, Y. Ma, J. Marton, Y. Matsuda, Y. Mizoi, O. Morra, R. Murayama, T. Nagae, H. Noumi, H. Ohnishi, S. Okada, Z. Omar, H. Outa, K. Piscicchia, Y. Sada, A. Sakaguchi, F. Sakuma, M. Sato, A. Scordo, M. Sekimoto, H. Shi, K. Shirotori, D. Sirghi, F. Sirghi, K. Suzuki, S. Suzuki, T. Suzuki, K. Tanida, H. Tatsuno, A. O. Tokiyasu, M. Tokuda, D. Tomono, A. Toyoda, K. Tsukada, O. Vazquez-Doce, E. Widmann, T. Yamaga, T. Yamazaki, H. Yim, Q. Zhang, J. Zmeskal

    2022/09/17

    DOI： 10.1016/j.physletb.2022.137637 　

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    We measured a set of $\pi^\pm\Sigma^\mp$, $\pi^0\Sigma^0$, and $\pi^-\Sigma^0$ invariant mass spectra below and above the $\bar{K}N$ mass threshold in $K^-$-induced reactions on deuteron. We deduced the $S$-wave $\bar{K}N\rightarrow\pi\Sigma$ and $\bar{K}N\rightarrow\bar{K}N$ scattering amplitudes in the isospin 0 channel in the framework of a $\bar{K}N$ and $\pi\Sigma$ coupled channel. We find that a resonance pole corresponding to $\Lambda(1405)$ is located at 1417.7$^{+6.0}_{-7.4}$(fitting errors)$^{+1.1}_{-1.0}$(systematic errors) + $[-26.1^{+6.0}_{-7.9}$(fitting errors)$^{+1.7}_{-2.0}$(systematic errors)]$i$ MeV/$c^2$, closer to the $\bar{K}N$ mass threshold than the value determined by the Particle Data Group.

  5. The International Linear Collider: Report to Snowmass 2021

    Alexander Aryshev, Ties Behnke, Mikael Berggren, James Brau, Nathaniel Craig, Ayres Freitas, Frank Gaede, Spencer Gessner, Stefania Gori, Christophe Grojean, Sven Heinemeyer, Daniel Jeans, Katja Kruger, Benno List, Jenny List, Zhen Liu, Shinichiro Michizono, David W. Miller, Ian Moult, Hitoshi Murayama, Tatsuya Nakada, Emilio Nanni, Mihoko Nojiri, Hasan Padamsee, Maxim Perelstein, Michael E. Peskin, Roman Poeschl, Sam Posen, Aidan Robson, Jan Strube, Taikan Suehara, Junping Tian, Maxim Titov, Marcel Vos, Andrew White, Graham Wilson, Kaoru Yokoya, Aleksander Filip Zarnecki, Ichiro Adachi, Kaustubh Agashe, Tatjana Agatonovic Jovin, Hiroaki Aihara, Wolfgang Altmannshofer, Daniele Alves, Justin Anguiano, Ken-Ichi Aoki, Masato Aoki, Toshihiro Aoki, Yumi Aoki, Yasuo Arai, Hayato Araki, Haruka Asada, Kento Asai, Shoji Asai, David Attie, Howard Baer, Jonathan Bagger, Yang Bai, Ian Bailey, Ricardo Barrue, Rainer Bartoldus, Emanuela Barzi, Matthew Basso, Lothar Bauerdick, Sebastian Baum, Alain Bellerive, Sergey Belomestnykh, Jorge Berenguer Antequera, Jakob Beyer, Pushpalatha Bhat, Burak Bilki, Kevin Black, Kenneth Bloom, Geoffrey Bodwin, Veronique Boisvert, Fatma Boran, Vincent Boudry, Radja Boughezal, Antonio Boveia, Ivanka Bozovic-Jelisavcic, Jean-Claude Brient, Stanley Brodsky, Laurent Brunetti, Karsten Buesser, Eugene Bulyak, Philip N. Burrows, Graeme C. Burt, Yunhai Cai, Valentina Cairo, Anadi Canepa, Francesco Giovanni Celiberto, Enrico Cenni, Zackaria Chacko, Iryna Chaikovska, Mattia Checchin, Lisong Chen, Thomas Y. Chen, Hsin Chia Cheng, Gi-Chol Cho, Brajesh Choudhary, Jim Clarke, James Cline, Raymond Co, Timothy Cohen, Paul Colas, Chris Damerell, Arindam Das, Sridhara Dasu, Sally Dawson, Jorge de Blas, Carlos Henrique de Lima, Aldo Deandrea, Klaus Dehmelt, Jean Delayen, Carlos Henrique de Lima, Marcel Demarteau, Dmitri Denisov, Radovan Dermisek, Angel Dieguez, Takeshi Dohmae, Jens Dopke, Katharina Dort, Yong Du, Bohdan Dudar, Bhaskar Dutta, Juhi Dutta, Ulrich Einhaus, Eckhard Elsen, Motoi Endo, Grigory Eremeev, Engin Eren, Jens Erler, Eric Esarey, Lisa Everett, Angeles Faus Golfe, Marcos Fernandez Garcia, Brian Foster, Nicolas Fourches, Mary-Cruz Fouz, Keisuke Fujii, Junpei Fujimoto, Esteban Fullan Torregrosa, Kazuro Furukawa, Takahiro Fusayasu, Juan Fuster, Serguei Ganjour, Yuanning Gao, Naveen Gaur, Rongli Geng, Howard Georgi, Tony Gherghetta, Joel Goldstein, Dorival Goncalves, Julia Gonski, Tomas Gonzalo, Takeyoshi Goto, Toru Goto, Norman Graf, Joseph Grames, Paul Grannis, Lindsey Gray, Alexander Grohsjean, Jiayin Gu, Yalcin Guler, Phillip Gutierrez, Junji Haba, Howard Haber, John Hallford, Koichi Hamaguchi, Tao Han, Kazuhiko Hara, Daisuke Harada, Koji Hashimoto, Katsuya Hashino, Masahito Hayashi, Gudrun Heinrich, Keisho Hidaka, Takeo Higuchi, Fujio Hinode, Zenro Hioki, Minoru Hirose, Nagisa Hiroshima, Junji Hisano, Wolfgang Hollik, Samuel Homiller, Sungwoo Hong, Anson Hook, Yasuyuki Horii, Hiroki Hoshina, Ivana Hristova, Katri Huitu, Yoshifumi Hyakutake, Toru Iijima, Katsumasa Ikematsu, Anton Ilderton, Kenji Inami, Adrian Irles, Akimasa Ishikawa, Koji Ishiwata, Hayato Ito, Igor Ivanov, Sho Iwamoto, Toshiyuki Iwamoto, Masako Iwasaki, Yoshihisa Iwashita, Haoyi Jia, Fabricio Jimenez Morales, Prakash Joshi, Sunghoon Jung, Goran Kacarevic, Michael Kagan, Mitsuru Kakizaki, Jan Kalinowski, Jochen Kaminski, Kazuyuki Kanaya, Shinya Kanemura, Hayato Kanno, Yuya Kano, Shigeru Kashiwagi, Yukihiro Kato, Nanami Kawada, Shin-ichi Kawada, Kiyotomo Kawagoe, Valery Khoze, Hiromichi Kichimi, Doojin Kim, Teppei Kitahara, Ryuichiro Kitano, Jan Klamka, Sachio Komamiya, K. C. Kong, Taro Konomi, Katsushige Kotera, Emi Kou, Ilya Kravchenko, Kiyoshi Kubo, Takayuki Kubo, Takuya Kumaoka, Ashish Kumar, Nilanjana Kumar, Jonas Kunath, Saumyen Kundu, Hiroshi Kunitomo, Masakazu Kurata, Masao Kuriki, Alexander Kusenko, Theodota Lagouri, Andrew J. Lankford, Gordana Lastovicka-Medin, Francois Le Diberder, Claire Lee, Matthias Liepe, Jacob Linacre, Zachary Liptak, Shivani Lomte, Ian Low, Yang Ma, Hani Maalouf, David MacFarlane, Brendon Madison, Thomas Madlener, Tomohito Maeda, Paul Malek, Sanjoy Mandal, Thomas Markiewicz, John Marshall, Aurelien Martens, Victoria Martin, Martina Martinello, Celso Martinez Rivero, Nobuhito Maru, John Matheson, Shigeki Matsumoto, Hiroyuki Matsunaga, Yutaka Matsuo, Kentarou Mawatari, Johnpaul Mbagwu, Peter McIntosh, Peter McKeown, Patrick Meade, Krzysztof Mekala, Petra Merkel, Satoshi Mihara, Víctor Miralles, Marcos Miralles Lopez, Go Mishima, Satoshi Mishima, Bernhard Mistlberger, Alexander Mitov, Kenkichi Miyabayashi, Akiya Miyamoto, Gagan Mohanty, Laura Monaco, Myriam Mondragon, Hugh E. Montgomery, Gudrid Moortgat-Pick, Nicolas Morange, María Moreno Llacer, Stefano Moretti, Toshinori Mori, Toshiyuki Morii, Takeo Moroi, David Morrissey, Benjamin Nachman, Kunihiro Nagano, Jurina Nakajima, Eiji Nakamura, Shinya Narita, Pran Nath, Timothy Nelson, David Newbold, Atsuya Niki, Yasuhiro Nishimura, Eisaku Nishiyama, Yasunori Nomura, Kacper Nowak, Mitsuaki Nozaki, María Teresa Nunez Pardo de Vera, Ines Ochoa, Masahito Ogata, Satoru Ohashi, Hikaru Ohta, Shigemi Ohta, Norihito Ohuchi, Hideyuki Oide, Nobuchika Okada, Yasuhiro Okada, Shohei Okawa, Yuichi Okayasu, Yuichi Okugawa, Toshiyuki Okugi, Takemichi Okui, Yoshitaka Okuyama, Mathieu Omet, Tsunehiko Omori, Hiroaki Ono, Tomoki Onoe, Wataru Ootani, Hidetoshi Otono, Shuhei Ozawa, Simone Pagan Griso, Alessandro Papa, Rocco Paparella, Eun-Kyung Park, Gilad Perez, Abdel Perez-Lorenzana, Yvonne Peters, Frank Petriello, Jonatan Piedra, Werner Porod, Christopher Potter, Alan Price, Yasser Radkhorrami, Laura Reina, Juergen Reuter, Francois Richard, Sabine Riemann, Robert Rimmer, Thomas Rizzo, Tania Robens, Roger Ruber, Alberto Ruiz Jimeno, Takayuki Saeki, Ipsita Saha, Tomoyuki Saito, Makoto Sakaguchi, Tadakatsu Sakai, Yasuhito Sakaki, Kodai Sakurai, Riccardo Salvatico, Fabrizio Salvatore, Yik Chuen San, Pearl Sandick, Tomoyuki Sanuki, Kollassery Swathi Sasikumar, Oliver Schaefer, Ruth Schaefer, Uwe Schneekloth, Thomas Schoerner-Sadenius, Carl Schroeder, Philip Schuster, Ariel Schwartzman, Reinhard Schwienhorst, Felix Sefkow, Yoshihiro Seiya, Motoo Sekiguchi, Kazuyuki Sekizawa, Katsumi Senyo, Hale Sert, Danielev Sertore, Ronald Settles, Qaisar Shafi, Tetsuo Shahdara, Barmak Shams Es Haghi, Ashish Sharma, Jessie Shelton, Claire Shepherd-Themistocleous, Hiroto Shibuya, Tetsuo Shidara, Takashi Shimomura, Tetsuo Shindou, Yutaro Shoji, Jing Shu, Ian Sievers, Frank Simon, Rajeev Singh, Yotam Soreq, Marcel Stanitzki, Steinar Stapnes, Amanda Steinhebel, John Stupak, Shufang Su, Fumihiko Suekane, Akio Sugamoto, Yuji Sugawara, Satoru Sugimoto, Yasuhiro Sugimoto, Hiroaki Sugiyama, Yukinari Sumino, Raman Sundrum, Atsuto Suzuki, Shin Suzuki, Maximilian Swiatlowski, Tim M. P. Tait, Shota Takahashi, Tohru Takahashi, Tohru Takeshita, Michihisa Takeuchi, Yosuke Takubo, Tomohiko Tanabe, Philip Tanedo, Morimitsu Tanimoto, Shuichiro Tao, Xerxes Tata, Toshiaki Tauchi, Geoffrey Taylor, Takahiro Terada, Nobuhiro Terunuma, Jesse Thaler, Alessandro Thea, Finn Tillinger, Jan Timmermans, Kohsaku Tobioka, Kouichi Toda, Atsushi Tokiyasu, Takashi Toma, Julie Torndal, Mehmet Tosun, Yu-Dai Tsai, Shih-Yen Tseng, Koji Tsumura, Douglas Tuckler, Yoshiki Uchida, Yusuke Uchiyama, Daiki Ueda, Fumihiko Ukegawa, Kensei Umemori, Junji Urakawa, Claude Vallee, Roberto Vega, Liliana Velasco, Silvia Verdu-Andres, Caterina Vernieri, Anna Vila, Ivan Vila Alvarez, Joost Vossebeld, Raghava Vsrms, Natasa Vukasinovic, Doreen Wackeroth, Moe Wakida, Liantao Wang, Masakazu Washio, Takashi Watanabe, Nigel Watson, Gordon Watts, Georg Weiglein, James D. Wells, Marc Wenskat, Susanne Westhoff, Glen White, Ciaran Williams, Stephane Willocq, Matthew Wing, Alasdair Winter, Marc Winter, Yongcheng Wu, Keping Xie, Tao Xu, Vyacheslav Yakovlev, Shuei Yamada, Akira Yamamoto, Hitoshi Yamamoto, Kei Yamamoto, Yasuchika Yamamoto, Masato Yamanaka, Satoru Yamashita, Masahiro Yamatani, Naoki Yamatsu, Shigehiro Yasui, Takuya Yoda, Ryo Yonamine, Keisuke Yoshihara, Masakazu Yoshioka, Tamaki Yoshioka, Fukuko Yuasa, Keita Yumino, Dirk Zerwas, Ya-Juan Zheng, Jia Zhou, Hua Xing Zhu, Mikhail Zobov, Fabian Zomer

    2022/03/15

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    The International Linear Collider (ILC) is on the table now as a new global energy-frontier accelerator laboratory taking data in the 2030s. The ILC addresses key questions for our current understanding of particle physics. It is based on a proven accelerator technology. Its experiments will challenge the Standard Model of particle physics and will provide a new window to look beyond it. This document brings the story of the ILC up to date, emphasizing its strong physics motivation, its readiness for construction, and the opportunity it presents to the US and the global particle physics community.

  6. LEPS2/BGOegg upgrade experiment for the precise measurement of the nuclear medium effect

    時安敦史, 村松憲仁, 宮部学, 清水肇, 松村裕二, 堀田智明

    日本物理学会講演概要集(CD-ROM)　77　(1)　2022

    ISSN： 2189-079X

  7. Development and performance evaluation of Beam Profile Monitor at SPring-8/LEPS2 experiment.

    柴田泰地, 住浜水季, 住浜水季, 中村和希, 時安敦史, 佐田優太, 與曽井優, 小早川亮, 渡邊憲

    日本物理学会講演概要集(CD-ROM)　77　(1)　2022

    ISSN： 2189-079X

  8. SPring-8 LEPS2 beamline: A facility to produce a multi-GeV photon beam via laser Compton scattering

    N. Muramatsu, M. Yosoi, T. Yorita, Y. Ohashi, J. K. Ahn, S. Ajimura, Y. Asano, W. C. Chang, J. Y. Chen, S. Date, T. Gogami, H. Hamano, T. Hashimoto, T. Hiraiwa, T. Hotta, T. Ishikawa, Y. Kasamatsu, H. Katsuragawa, R. Kobayakawa, H. Kohri, S. Masumoto, Y. Matsumura, M. Miyabe, K. Mizutani, Y. Morino, T. Nakano, T. Nam, M. Niiyama, Y. Nozawa, H. Ohkuma, H. Ohnishi, T. Ohta, M. Oishi, K. Ozawa, S. Y. Ryu, Y. Sada, H. Saito, T. Shibukawa, H. Shimizu, R. Shirai, M. Shoji, M. Sumihama, S. Suzuki, S. Tanaka, Y. Taniuchi, A. O. Tokiyasu, N. Tomida, Y. Tsuchikawa, K. Watanabe, C. J. Yoon, C. Yoshida

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment　1033　166677-166677　2021/12/15

    Publisher: Elsevier BV

    DOI： 10.1016/j.nima.2022.166677 　

    ISSN： 0168-9002

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    We have constructed a new laser-Compton-scattering facility, called the LEPS2 beamline, at the 8-GeV electron storage ring, SPring-8. This facility provides a linearly polarized photon beam in a tagged energy range of 1.3--2.4 GeV. Thanks to a small divergence of the low-emittance storage-ring electrons, the tagged photon beam has a size (sigma) suppressed to about 4 mm even after it travels about 130 m to the experimental building that is independent of the storage ring building and contains large detector systems. This beamline is designed to achieve a photon beam intensity higher than that of the first laser-Compton-scattering beamline at SPring-8 by adopting the simultaneous injection of up to four high-power laser beams and increasing a transmittance for the long photon-beam path up to about 77%. The new beamline is under operation for hadron photoproduction experiments.

  9. Search for the Lightest Double-Lambda Hypernucleus, H-5(Lambda Lambda), at J-PARC (vol 62, 47, 2021)

    Hiroyuki Fujioka, Shuhei Ajimura, Tomokazu Fukuda, Toshiyuki Gogami, Emiko Hiyama, Yuhei Morino, Toshio Motoba, Tomofumi Nagae, Sho Nagao, Akane Sakaue, Toshiyuki Takahashi, Yosuke Taki, Atsushi O. Tokiyasu, Makoto Uchida, Masaru Yosoi

    FEW-BODY SYSTEMS　62　(3)　2021/09

    DOI： 10.1007/s00601-021-01654-9 　

    ISSN： 0177-7963

    eISSN： 1432-5411

  10. Towards the proton radius measurement by low-energy electron scattering

    郷家大雅, 青柳泰平, HANG Z., 本多佑記, 石倉悠真, 石崎一志, 菊永英寿, LEGRIS C., 前田幸重, MICHAEL K., 三浦禎雄, 宮部学, 武藤俊哉, 南部健一, 佐々木勝一, 須田利美, 高橋健, 瀧大祐, 玉江忠明, 時安敦史, 塚田暁, 和宇慶ひかり

    日本物理学会講演概要集(CD-ROM)　76　(2)　2021

    ISSN： 2189-079X

  11. Time resolution of a plastic scintillator for the forward hodoscope in the J-PARC E50 spectrometer

    石川貴嗣, 宮部学, 野海博之, 野海博之, 大西宏明, 佐田優太, 白鳥昂太郎, 時安敦史, 吉田千尋

    日本物理学会講演概要集(CD-ROM)　76　(2)　2021

    ISSN： 2189-079X

  12. Evaluation of the effect of magnetic field on the sampling calorimeter at SPring-8/LEPS2 experiment.

    水田亮, 住浜水季, 住浜水季, 柴田泰地, 中村和希, 時安敦史, 吉田千尋, 斎藤肇, 與曽井優, 桂川仁志, 小早川亮, 渡邉憲

    日本物理学会講演概要集(CD-ROM)　76　(1)　2021

    ISSN： 2189-079X

  13. Performance evaluation of LEPS2 solenoid spectrometer: I

    小早川亮, 與曽井優, RYU Sun-Young, NAM Tran Hai, 渡邉憲, 新山雅之, 住浜水季, 時安敦史, 吉田千尋

    日本物理学会講演概要集(CD-ROM)　76　(2)　2021

    ISSN： 2189-079X

  14. Performance study of electron spectrometer for Proton Radius Measurement by Low-energy Electron Scattering

    瀧大祐, 青柳泰平, LEGRIS Clement, 郷家大雅, 本多佑記, 石崎一志, 菊永英寿, 前田幸重, KOHL Michael, 三浦禎雄, 宮部学, 武藤俊哉, 南部健一, 佐々木勝一, 須田利美, 高橋健, 玉江忠明, 時安敦史, 塚田暁, 和宇慶ひかり, HANG Zhao

    日本物理学会講演概要集(CD-ROM)　76　(1)　2021

    ISSN： 2189-079X

  15. Proton radius measurement with low-energy electron scattering at ELPH, Tohoku University.

    本多佑記, 青柳泰平, LEGRIS Clement, 郷家大雅, 石崎一志, 菊永英寿, 前田幸重, KOHL Michael, 三浦禎雄, 宮部学, 武藤俊哉, 南部健一, 佐々木勝一, 須田利美, 高橋健, 瀧大祐, 玉江忠明, 時安敦史, 塚田暁, 和宇慶ひかり, HANG Zhao

    日本物理学会講演概要集(CD-ROM)　76　(1)　2021

    ISSN： 2189-079X

  16. DAQ speeding-up by parallerized VME Bus

    Baba Hidetada, Takeuchi Satoshi, Nishimura Daiki, Zenihiro Juzo, Tokiyasu Atsushi, Yokoyama Rin, Isobe Tadaaki, Ichihara Takashi, Onishi Tetsuya, Yoshida Koichi, Watanabe Yasushi, Ota Shinsuke, Shimizu Hideki, Shimoura Susumu

    Meeting Abstracts of the Physical Society of Japan　75　418-418　2020

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.75.1.0_418 　

  17. Performance Evaluation of Time Projection Chamber for Double-Λ Hypernuclear Experiment at J-PARC

    Taki Y., Fukuda T., Fujioka H., Morino Y., Yosoi M., Ajimura S., Uchida M., Gogami T., Sakaue A., Takahashi T., Tokiyasu A. O., Nagae T., Nagao S.

    Meeting Abstracts of the Physical Society of Japan　75　404-404　2020

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.75.1.0_404 　

  18. Study on the variation of time resolution and cross talks depending on the electrode material of Resistive Plate Chamber

    Takahashi J., Ohnishi H., Miyabe M., Tokiyasu A. O., Yoshida C., Saito H., Tsuruta M., Nishikawa R., Tabata K.

    Meeting Abstracts of the Physical Society of Japan　75　408-408　2020

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.75.1.0_408 　

  19. Experimental studies to produce a high energy photon beam by inverse Compton scattering of soft X-rays

    MURAMATSU Norihito, OKABE Masahiro, SUZUKI Shinsuke, DATE Schin, SHIMIZU Hajime, OHKUMA Haruo, KANDA Kazuhiro, MIYAMOTO Shuji, HARADA Tetsuo, WATANABE Takeo, MIYABE Manabu, TOKIYASU Atsushi

    LASTI Annual Report (Web)　21　2020

    ISSN： 2435-7499

  20. Development of a high energy photon beam generated by inverse Compton scattering of soft X-rays

    岡部雅大, 村松憲仁, 鈴木伸介, 伊達伸, 伊達伸, 清水肇, 大熊春夫, 神田一浩, 宮本修治, 原田哲男, 渡邊健夫, 宮部学, 時安敦史

    日本物理学会講演概要集(CD-ROM)　75　(1)　423-423　2020

    Publisher: The Physical Society of Japan

    DOI： 10.1103/PhysRevC.96.014005 　

    ISSN： 2189-079X

    eISSN： 2469-9993

  21. Measurement of the transmission at the LEPS2 beamline

    齊藤肇, 時安敦史, 佐田優太, 村松憲仁, 與曽井優, 堀田智明

    日本物理学会講演概要集(CD-ROM)　75　(1)　413-413　2020

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.75.1.0_413 　

    ISSN： 2189-079X

  22. Measurement of the transmission at the LEPS2 beamline (2)

    齊藤肇, 時安敦史, 佐田優太, 村松憲仁, 與曽井優, 堀田智明

    日本物理学会講演概要集(CD-ROM)　75　(2)　2020

    ISSN： 2189-079X

  23. Probing new physics beyond the Standard Model (BSM) with atoms, nuclei and nucleons

    Tokiyasu Atsushi

    Meeting Abstracts of the Physical Society of Japan　74　142-142　2019

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.74.1.0_142 　

  24. Development and performance evaluation of the trigger detector in SPring-8/LEPS2 solenoid spectrometer

    Yamamoto Rinna, Ueda Tadayuki, Yoshida Chihiro, Okabe Masahiro, Nakamura Daiki, Miki Katsuma, Yosoi Masaru, Sumihama Mizuki, Niiyama Masayuki, Tokiyasu Atushi, Miyabe Manabu, Sada Yuta, Mizutani Keigo, Tanaka Shintaro

    Meeting Abstracts of the Physical Society of Japan　74　261-261　2019

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.74.1.0_261 　

  25. Performance of drift chambers in the LEPS2 solenoid experiment

    Sada Y., Mizutani K., Ryu S., Yosoi M, Niyama M., Tokiyasu A.

    Meeting Abstracts of the Physical Society of Japan　74　414-414　2019

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.74.1.0_414 　

  26. Development of an aerogel Cherenkov counter for the LEPS2 solenoid experiment at SPring-8

    Yoshida C., Yang H., Ohnishi H., Tokiyasu A. O., Yosoi M., Niiyama M., Katsuragawa H., Gogami T., Sumihama M., Ahn J. K.

    Meeting Abstracts of the Physical Society of Japan　74　123-123　2019

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.74.2.0_123 　

  27. Spectroscopy of 7ΞH and 5ΛΛH

    Fujioka Hiroyuki, Tokiyasu Atsushi O., Motoba Toshio, Fukuda Tomokazu, Hiyama Emiko, Taki Yosuke, Gogami Toshiyuki, Nagae Tomofumi, Takahashi Toshiyuki, Morino Yuhei, Nagao Sho

    Meeting Abstracts of the Physical Society of Japan　74　315-315　2019

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.74.2.0_315 　

  28. Production of a high energy γ beam via inverse Compton scattering of soft x-rays from a short undulator

    MURAMATSU Norihito, OKABE Masahiro, SUZUKI Shinsuke, DATE Schin, SHIMIZU Hajime, OHKUMA Haruo, KANDA Kazuhiro, MIYAMOTO Shuji, HARADA Tetsuo, WATANABE Takeo, MIYABE Manabu, TOKIYASU Atsushi

    ELPH Annual Report　2018　2019

    ISSN： 2186-7968

  29. Production of a high energy γ beam via backward Compton scattering of soft X-rays from a short undulator

    MURAMATSU Norihito, OKABE Masahiro, SUZUKI Shinsuke, DATE Schin, SHIMIZU Hajime, OHKUMA Haruo, KANDA Kazuhiro, MIYAMOTO Shuji, HARADA Tetsuo, WATANABE Takeo, MIYABE Manabu, TOKIYASU Atsushi

    LASTI Annual Report (Web)　20　2019

    ISSN： 2435-7499

  30. Development of a High Energy Gamma-ray Beam via Inverse Compton Scattering of Soft X-rays

    Muramatsu Norihito, Watanabe Takeo, Miyabe Manabu, Tokiyasu Atsushi, Okabe Masahiro, Suzuki Shinsuke, Daté Schin, Shimizu Hajime, Ohkuma Haruo, Kanda Kazuhiro, Miyamoto Shuji, Harada Tetsuo

    Journal of the Particle Accelerator Society of Japan　16　(3)　154-160　2019

    Publisher: Particle Accelerator Society of Japan

    DOI： 10.50868/pasj.16.3_154 　

    ISSN： 1349-3833

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    <p>We aim to develop a novel technique to produce a high energy γ-ray beam of several GeV by adopting inverse Compton scattering of soft X-rays at an electron storage ring. Now an experimental project to demonstrate such a beam is being advanced at NewSUBARU by using X-rays from a short undulator and reflecting it backwardly with a Mo/Si multi-layer mirror. It will open up a way to construct new γ-ray sources at the next generation rings and to carry out new photoproduction experiments for the studies of heavy hadrons.</p>

  31. First measurement of coherent φ -meson photoproduction from He 4 near threshold

    T. Hiraiwa, M. Yosoi, M. Niiyama, Y. Morino, Y. Nakatsugawa, M. Sumihama, D. S. Ahn, J. K. Ahn, W. C. Chang, J. Y. Chen, S. Daté, H. Fujimura, S. Fukui, K. Hicks, T. Hotta, S. H. Hwang, T. Ishikawa, Y. Kato, H. Kawai, H. Kohri, Y. Kon, P. J. Lin, Y. Maeda, M. Miyabe, K. Mizutani, N. Muramatsu, T. Nakano, Y. Nozawa, Y. Ohashi, T. Ohta, M. Oka, C. Rangacharyulu, S. Y. Ryu, T. Saito, T. Sawada, H. Shimizu, E. A. Strokovsky, Y. Sugaya, K. Suzuki, A. O. Tokiyasu, T. Tomioka, T. Tsunemi, M. Uchida, T. Yorita

    Physical Review C　97　(3)　2018/03/27

    DOI： 10.1103/PhysRevC.97.035208 　

    ISSN： 2469-9985

    eISSN： 2469-9993

  32. A design of an electron spectrometer for proton radius measurements at ELPH

    Aoyagi T., Sasaki S., Suda T., Takahashi K., Tamae T., Tokiyasu A., Tsukada K., Tsukamoto N., Honda Y., Kasama K., Kikunaga H., Maeda Y., Miyabe M., Muto T., Namba K., Nanbu K.

    Meeting Abstracts of the Physical Society of Japan　73　258-258　2018

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.73.1.0_258 　

  33. Dark-matter axion-search experiment CARRACK-Development of laser for bunched atomic beam-

    Haizuka Atsushi, Ogawa Izumi, Matsuki Seishi, Tokiyasu Atsushi

    Meeting Abstracts of the Physical Society of Japan　73　359-359　2018

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.73.1.0_359 　

  34. Precise measurement of the proton charge radius at ELPH 2

    Honda Y., Sasaki S., Suda T., Takahashi K., Takayama S., Tamae T., Tokiyasu A. O., Tsukada K., Tsukamoto N., Aoyagi T., Kasama K., Kikunaga H., Maeda Y., Miyabe M., Muto T., Namba K., Nanbu K.

    Meeting Abstracts of the Physical Society of Japan　73　82-82　2018

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.73.1.0_82 　

  35. Development of a forward charged-particle detector for the BGOegg experiment.

    Ueda T., Yoshida C., Miyabe M., Ishikawa T., Ohnishi H., Shimizu H., Shirai R., Tokiyasu A., Matsumura Y., Muramatsu N.

    Meeting Abstracts of the Physical Society of Japan　73　(0)　382-382　2018

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.73.1.0_382 　

  36. Development of the gamma beam profile monitor for the BGOegg experiment.

    Shirai R., Niiyama M., Ohnishi H., Ozawa K., Shimizu H., Tomita N., Ueda T., Yoshida C., Yosoi M., BGO egg collaboration, Tokiyasu A. O., Hashimoto T., Ishikawa T., Matsumura Y., Miyabe M., Mizutani K., Muramatsu N., Tran Nam

    Meeting Abstracts of the Physical Society of Japan　73　(0)　256-256　2018

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.73.1.0_256 　

  37. The development and the performance evaluation of the trigger detector for the solenoid spectrometer in SPring-8/LEPS2.

    Yamamoto Rinna

    Meeting Abstracts of the Physical Society of Japan　73　(0)　383-383　2018

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.73.1.0_383 　

  38. φ photoproduction on the proton at Eγ=1.5-2.9 GeV

    K. Mizutani, M. Niiyama, T. Nakano, M. Yosoi, Y. Nozawa, D. S. Ahn, J. K. Ahn, W. C. Chang, J. Y. Chen, S. Daté, W. Gohn, H. Hamano, T. Hashimoto, K. Hicks, T. Hiraiwa, T. Hotta, S. H. Hwang, T. Ishikawa, K. Joo, W. S. Jung, Y. Kato, H. Katsuragawa, M. H. Kim, S. H. Kim, H. Kohri, Y. Kon, H. S. Lee, Y. Maeda, Y. Matsumura, T. Mibe, M. Miyabe, Y. Morino, N. Muramatsu, Y. Nakatsugawa, H. Noumi, Y. Ohashi, T. Ohta, M. Oka, J. B. Park, J. D. Parker, C. Rangacharyulu, S. Y. Ryu, Y. Sada, T. Sawada, T. Shibukawa, S. H. Shiu, Y. Sugaya, M. Sumihama, S. Tanaka, A. O. Tokiyasu, N. Tomida, H. N. Tran, T. Tsunemi, M. Uchida, M. Ungaro, Y. Yanai

    Physical Review C　96　(6)　2017/12/29

    DOI： 10.1103/PhysRevC.96.062201 　

    ISSN： 2469-9985

    eISSN： 2469-9993

  39. Charge-to-time converting leading-edge discriminator for plastic-scintillator signals

    T. Ishikawa, Y. Takeda, Y. Honda, Y. Inoue, H. Kanda, S. Kido, Y. Matsumura, M. Miyabe, I. Nagasawa, H. Shimizu, T. Takeda, A. O. Tokiyasu, Y. Tsuchikawa, H. Yamazaki

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment　875　193-200　2017/12/11

    DOI： 10.1016/j.nima.2017.09.040 　

    ISSN： 0168-9002

    eISSN： 1872-9576

  40. Development of a high-intensity photon-beam profile monitor

    Takatsugu Ishikawa, Hisako Fujimura, Ryo Hashimoto, Yuki Honda, Takasln Ishida, Hiroki Kanda, Satoshi Kido, Yuji Matsumura, Manabu Mryabe, Ikuro Nagasawa, Ken'ichi Nanbu, Hajime Shimizu, Koutaku Suzuki, Ken Takahashi, Atsushi O. Tokiyasu, Yusuke Tsuchikawa, Hirohito Yamazaki

    2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016　2017-January　2017/10/16

    Publisher: Institute of Electrical and Electronics Engineers Inc.

    DOI： 10.1109/NSSMIC.2016.8069383 　

  41. Low-energy scattering parameters between the eta meson and nucleon from eta photoproduction on the deuteron

    T. Ishikawa, K. Aoki, H. Fujioka, Y. Honda, T. Hotta, Y. Inoue, K. Itahashi, H. Kanda, H. Kawai, K. Maeda, Y. Matsumura, M. Miyabe, S. Miyata, N. Muramatsu, T. Nishi, H. Ohnishi, K. Ozawa, H. Shimizu, R. Shirai, M. Tabata, A. O. Tokiyasu, Y. Tsuchikawa, H. Yamazaki

    Acta Physica Polonica B　48　(10)　1801-1806　2017/10

    DOI： 10.5506/APhysPolB.48.1801 　

    ISSN： 0587-4254

    eISSN： 1509-5770

  42. FORESTアップグレード実験のための前方荷電粒子検出器の性能評価 II

    宮田聖也, 青木和也, 藤岡宏之, 本多佑記, 堀田智明, 石川貴嗣, 板橋健太, 神田浩樹, 河合秀幸, 前田和茂, 宮部学, 松村裕二, 村松憲仁, 大西宏明, 小沢恭一郎, 清水肇, 白井凜太郎, 田端誠, 時安敦史, 井上陽介, 土川雄介

    日本物理学会講演概要集(CD-ROM)　72　(2)　ROMBUNNO.12aT12‐3-201　2017/09/25

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.72.2.0_201 　

    ISSN： 2189-079X

  43. Missing-mass spectroscopy with the Li 6 (π-,K+)X reaction to search for H Λ6

    R. Honda, M. Agnello, J. K. Ahn, S. Ajimura, Y. Akazawa, N. Amano, K. Aoki, H. C. Bhang, N. Chiga, M. Endo, P. Evtoukhovitch, A. Feliciello, H. Fujioka, T. Fukuda, S. Hasegawa, S. H. Hayakawa, K. Hosomi, S. H. Hwang, Y. Ichikawa, Y. Igarashi, K. Imai, N. Ishibashi, R. Iwasaki, C. W. Joo, R. Kiuchi, J. K. Lee, J. Y. Lee, K. Matsuda, Y. Matsumoto, K. Matsuoka, K. Miwa, Y. Mizoi, M. Moritsu, T. Nagae, S. Nagamiya, M. Nakagawa, M. Naruki, H. Noumi, R. Ota, B. J. Roy, P. K. Saha, A. Sakaguchi, H. Sako, C. Samanta, V. Samoilov, Y. Sasaki, S. Sato, M. Sekimoto, Y. Shimizu, T. Shiozaki, K. Shirotori, T. Soyama, H. Sugimura, T. Takahashi, T. N. Takahashi, H. Tamura, K. Tanabe, T. Tanaka, K. Tanida, A. O. Tokiyasu, Z. Tsamalaidze, M. Ukai, T. O. Yamamoto, Y. Yamamoto, S. B. Yang, K. Yoshida

    Physical Review C　96　(1)　2017/07/31

    DOI： 10.1103/PhysRevC.96.014005 　

    ISSN： 2469-9985

    eISSN： 2469-9993

  44. 陽子電荷半径パズル解明にむけて-極低運動量移行領域での電子・陽子弾性散乱-

    須田利美, 菊永英寿, 塚田暁, 本多佑記, 玉江忠明, 武藤俊哉, 高橋健, 宮部学, 時安敦史, 佐々木勝一, 塚本夏基

    日本物理学会講演概要集(CD-ROM)　72　(2)　2017

    ISSN： 2189-079X

  45. Precise measurement of the proton charge radius at ELPH

    Honda Y., Tsukada K., Kigunaga H., Manbu K., Miyabe M., Muto T., Suda T., Takahashi K, Tamae T., Tokiyasu A. O.

    Meeting Abstracts of the Physical Society of Japan　72　327-327　2017

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.72.2.0_327 　

  46. Planned experiment of d*(2380) photo-production with FOREST

    Inoue Y., Honda Y., Ishikawa T., Kanda H., Matsumura Y., Miyabe M., Muramatsu N., Shimizu H., Tokiyasu A.O.

    Meeting Abstracts of the Physical Society of Japan　72　(0)　374-374　2017

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.72.1.0_374 　

  47. Development of a new photon tagging sysetem for GeV-!LaTeX$\gamma$ beam line IX ~ Development of a high rate hodoscope with MPPC and plastic scintillator ~

    Tajima Y., Yoshida H. Y., Ishikawa T., Miyabe M., Tokiyasu A., Shimizu H., Sasagawa M., Inoue Y., Shirai R., Iwasa M., Sasaki M., Seki Y., Endo T., Ono T., Kashiwagura J., Sugihara Y., Wauke H.

    Meeting Abstracts of the Physical Society of Japan　72　(0)　273-273　2017

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.72.1.0_273 　

  48. Study for hadron photo-production with BGOegg and forward PWO calorimeters

    Miyabe M, Muramatsu N, Matsumura Y, Ishikawa T, Inoue Y, Sasagawa M, Shirai K, Tsuchikawa Y, Tokiyasu A, Shimizu H, Honda Y

    Meeting Abstracts of the Physical Society of Japan　72　(0)　261-261　2017

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.72.1.0_261 　

  49. Development of detector and monitoring device for trigger of LEPS2 experiment - ( 2 )

    Miki Katsumasa, Nakamura Taiki, Sumihama Mizuki, Tokiyasu Atsushi

    Meeting Abstracts of the Physical Society of Japan　72　(0)　251-251　2017

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.72.1.0_251 　

    More details Close

    &lt;p&gt;現在建設中のSPring-8/LEPS2実験ではレーザー電子光を用いたハドロン光生成実験を行う予定である。本格的な実験開始前の基礎情報としてビーム形状の情報が必要である。我々は浜松フォトニクス社製MPPC-arrayとNIM-EASIROCモジュールを用いたモニター装置を開発した。本公演ではSr90を用いた装置の性能評価、及びLEPS2実験棟においビームプロファイルを測定した結果について報告する。&lt;/p&gt;

  50. Trigger study for LEPS2 experiment and design of the detecter to vetoing e+e- criation event

    Watanabe Ken, Niiyama Masayuki, Yosoi Masaru, Gogami Toshiyuki, Tokiyasu Atsushi, Sumihama Mizuki, Miki Katsumasa, Nakamura Taiki, Horita Koji

    Meeting Abstracts of the Physical Society of Japan　72　(0)　252-252　2017

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.72.1.0_252 　

    More details Close

    &lt;p&gt;LEPS2実験では、ソレノイド電磁石をスペクトロメータとして、高エネルギーの光生成反応を用いた様々なハドロン生成事象の測定を計画している。SPring-8で加速した電子にレーザー光を当て、逆コンプトン散乱で出てきた高エネルギーのγ線を用いる。測定では背景事象となるe^+e^-対生成の事象を除去するエアロゲルチェレンコフカウンター（AC）を導入する予定である。本講演ではACの性能評価と2016年11--12月に行ったACを用いたトリガースタディーの結果について報告する。&lt;/p&gt;

  51. Developement of detector and monitoring device for trigger of LEPS2 experiment -(1)

    Nakamura Taiki, Miki Katsumasa, Sumihama Mizuki, Tokiyasu Atsushi, Horita Kouji, Jo Jahmin

    Meeting Abstracts of the Physical Society of Japan　72　(0)　250-250　2017

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.72.1.0_250 　

    More details Close

    &lt;p&gt;大立体角検出器群を用いるLEPS2実験においてトリガー信号を生成するための検出器スタートカウンターを開発し，その性能評価を行った。スタートカウンターは，プラスチックシンチレータに浜松ホトニクス社のMPPCを接着したシンチレーション検出器である。宇宙線や陽電子ビームを用いた実験を行い，条件の最適化を行った。最適化時には，時間分解能は300ピコ秒程度だった。これはSpring-8のSR蓄積リングのRF信号の1バンチを分解するのに十分である。&lt;/p&gt;

  52. Interference Effect between φ and Λ (1520) Production Channels in the γp →k+K-p Reaction near Threshold International-journal

    S. Y. Ryu, J. K. Ahn, T. Nakano, D. S. Ahn, S. Ajimura, H. Akimune, Y. Asano, W. C. Chang, J. Y. Chen, S. Daté, H. Ejiri, H. Fujimura, M. Fujiwara, S. Fukui, S. Hasegawa, K. Hicks, K. Horie, T. Hotta, S. H. Hwang, K. Imai, T. Ishikawa, T. Iwata, Y. Kato, H. Kawai, K. Kino, H. Kohri, Y. Kon, N. Kumagai, P. J. Lin, Y. Maeda, S. Makino, T. Matsuda, N. Matsuoka, T. Mibe, M. Miyabe, M. Miyachi, Y. Morino, N. Muramatsu, R. Murayama, Y. Nakatsugawa, S. I. Nam, M. Niiyama, M. Nomachi, Y. Ohashi, H. Ohkuma, T. Ohta, T. Ooba, D. S. Oshuev, J. D. Parker, C. Rangacharyulu, A. Sakaguchi, T. Sawada, P. M. Shagin, Y. Shiino, H. Shimizu, E. A. Strokovsky, Y. Sugaya, M. Sumihama, A. O. Tokiyasu, Y. Toi, H. Toyokawa, T. Tsunemi, M. Uchida, M. Ungaro, A. Wakai, C. W. Wang, S. C. Wang, K. Yonehara, T. Yorita, M. Yoshimura, M. Yosoi, R. G.T. Zegers

    Physical Review Letters　116　(23)　232001-232001　2016/06/07

    DOI： 10.1103/PhysRevLett.116.232001 　

    ISSN： 0031-9007

    eISSN： 1079-7114

  53. A fast profile monitor with scintillating fiber hodoscopes for high-intensity photon beams

    T. Ishikawa, H. Fujimura, H. Hamano, R. Hashimoto, Y. Honda, T. Ishida, S. Kaida, H. Kanda, S. Kido, Y. Matsumura, M. Miyabe, K. Mizutani, I. Nagasawa, A. Nakamura, K. Nanbu, K. Nawa, S. Ogushi, Y. Shibasaki, H. Shimizu, H. Sugai, K. Suzuki, K. Takahashi, S. Takahashi, Y. Taniguchi, A. O. Tokiyasu, Y. Tsuchikawa, H. Yamazaki

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment　811　124-132　2016/03/01

    DOI： 10.1016/j.nima.2015.12.027 　

    ISSN： 0168-9002

    eISSN： 1872-9576

  54. Photon beam asymmetry measurement for the η photoproduction at SPring-8 BGOegg experiments

    Muramatsu Norihito, Hashimoto Toshikazu, Ahn Jung Keun, Chang Wen-Chen, Chen Jia-Ye, Date Schin, Gogami Toshiyuki, Goto Hiroya, Hamano Hirotomo, He Qing Hua, Hicks Kenneth, Hiraiwa Toshihiko, Honda Yuki, Hotta Tomoaki, Ikuno Hiroyuki, Inoue Yosuke, Ishikawa Takatsugu, Jaegle Igal, Jo Ja Min, Kasamatsu Yuuto, Katsuragawa Hitoshi, Kido Satoshi, Kon Yukiyoshi, Masumoto Shinichi, Matsumura Yuji, Miki Katsumasa, Miyabe Manabu, Mizutani Keigo, Nakamura Taiki, Nakano Takashi, Niiyama Masayuki, Nozawa Yuki, Ohashi Yuji, Ohkuma Haruo, Ohnishi Hiroaki, Ohta Takeshi, Oka Masaya, Ozawa Kyoichiro, Sasagawa Mizuki, Shibukawa Takuya, Shimizu Hajime, Shirai Rintaro, Shiraishi Ken'ichiro, Sugaya Yorihito, Sumihama Mizuki, Suzuki Shinsuke, Tanaka Shintaro, Tokiyasu Atsushi, Tomida Natsuki, Tran Nam, Tsuchikawa Yusuke, Yamazaki Hirohito, Yamazak Ryuji, Yanai Yuka, Yorita Tetsuhiko, Yosoi Masaru

    ELPH annual report　62-65　2016

    Publisher: 東北大学電子光理学研究センター

    ISSN： 2186-7968

  55. 20pAB-9 Measurement of a beam profile in the electron synchrotron at ELPH

    OBARA Yuki, SHIMIZU Hajime, TOKIYASU Atsushi, HAMA Hiroyuki, HINODE Fujio, ISHIKAWA Takatsugu, KANDA Hiroki, KASHIWAGI Shigeru, MIYABE Manabu, MUTO Toshiya, OZAWA Kyoichiro

    Meeting Abstracts of the Physical Society of Japan　71　(0)　323-323　2016

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.71.1.0_323 　

  56. 20pAB-12 Profiling of GeV γ Beams with an X-ray pixel sensor 2

    Kanda H., Nakamura S. N., Ninomiya A., Obara Y., Ozawa K., Ozeki K., Sasaki T., Shimizu H., Tokiyasu A. O., Honda K., Ishikawa T., Kaneta M., Kido S., Maeda K., Matsumura Y., Miyabe M., Muroi Y.

    Meeting Abstracts of the Physical Society of Japan　71　(0)　326-326　2016

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.71.1.0_326 　

  57. 21pPSB-22 Response of the gamma beam monitor using XFPS to the positrons

    Muroi Y., Nakamura S. N., Ninomiya A., Obara Y., Ozawa K., Ozeki K., Sasaki T., Shimizu H., Tokiyasu A. O., Honda K., Ishikawa T., Kanda H., Kaneta M., Kido S., Maeda K., Matsumura Y., Miyabe M.

    Meeting Abstracts of the Physical Society of Japan　71　(0)　414-414　2016

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.71.1.0_414 　

  58. Development of a plastic scintillator hodoscope for identifying charged particles through an electromagnetic calorimeter

    Inoue Y., Tokiyasu A.O., Honda Y., Ishikawa T., Kanda H., Matsumura Y., Miyabe M., Sasagawa M., Shimizu H., Shiraishi K.

    Meeting Abstracts of the Physical Society of Japan　71　(0)　189-189　2016

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.71.2.0_189 　

  59. 21aAB-2 The performance study of an electro-magnetic calorimeter for the LEPS2/BGOegg experiment

    Matsumura Y., Ozawa K., Shibukawa T., Shimizu H., Shiraishi K., Tokiyasu A. O., Tomida N., Tran Nam, Tsuchikawa Y., Yamazaki H., Yamazaki R., Hamano H., Yosoi M., Hashimoto T., Ishikawa T., Kido S., Masumoto S., Miyabe M., Mizutani K., Muramatsu N.

    Meeting Abstracts of the Physical Society of Japan　71　(0)　340-340　2016

    DOI： 10.11316/jpsgaiyo.71.1.0_340 　

  60. Observation of the "k-pp " -like structure in the d (π+, K+) reaction at 1.69 GeV/ c

    Yudai Ichikawa, Tomofumi Nagae, Hiroyuki Fujioka, Hyoungchan Bhang, Stefania Bufalino, Hiroyuki Ekawa, Petr Evtoukhovitch, Alessandro Feliciello, Shoichi Hasegawa, Shuhei Hayakawa, Ryotaro Honda, Kenji Hosomi, Ken'Ichi Imai, Shigeru Ishimoto, Changwoo Joo, Shunsuke Kanatsuki, Ryuta Kiuchi, Takeshi Koike, Harphool Kumawat, Yuki Matsumoto, Koji Miwa, Manabu Moritsu, Megumi Naruki, Masayuki Niiyama, Yuki Nozawa, Ryosuke Ota, Atsushi Sakaguchi, Hiroyuki Sako, Valentin Samoilov, Susumu Sato, Kotaro Shirotori, Hitoshi Sugimura, Shoji Suzuki, Toshiyuki Takahashi, Tomonori N. Takahashi, Hirokazu Tamura, Toshiyuki Tanaka, Kiyoshi Tanida, Atsushi O. Tokiyasu, Zviadi Tsamalaidze, Bidyut Roy, Mifuyu Ukai, Takeshi O. Yamamoto, Seongbae Yang

    Progress of Theoretical and Experimental Physics　2015　(2)　2015/01/29

    DOI： 10.1093/ptep/ptv002 　

    ISSN： 2050-3911

    eISSN： 2050-3911

  61. Measurement of the electron beam size at the BM5 radiator in the BST ring

    ELPH annual report　52-57　2015

    Publisher: 東北大学電子光理学研究センター

    ISSN： 2186-7968

  62. Development of the photon tagger for the NKS2 experiment

    ELPH annual report　37-44　2015

    Publisher: 東北大学電子光理学研究センター

    ISSN： 2186-7968

  63. Development of a fast profile monitor with scintillating fiber hodoscopes for high-intensity photon beams

    ELPH annual report　1-6　2015

    Publisher: 東北大学電子光理学研究センター

    ISSN： 2186-7968

  64. Abeam test of a charge-to-time converting leading-edge discriminator for plastic-scintillator signals

    ELPH annual report　13-30　2015

    Publisher: 東北大学電子光理学研究センター

    ISSN： 2186-7968

  65. Upgrade plan of the FOREST experiments at ELPH

    ELPH annual report　7-12　2015

    Publisher: 東北大学電子光理学研究センター

    ISSN： 2186-7968

  66. Test of an X-ray flat panel sensor as a beam profile monitor

    ELPH annual report　66-72　2015

    Publisher: 東北大学電子光理学研究センター

    ISSN： 2186-7968

  67. Performance Test of a Sampling Calorimeter for the SPring-8/LEPS2 experiment

    ELPH annual report　73-80　2015

    Publisher: 東北大学電子光理学研究センター

    ISSN： 2186-7968

  68. 28aSJ-12 Dark-matter axion-search experiment CARRACK : Development of bunched Rydberg atomic beam (2)

    Noshiro S., Takahashi N., Washino M., Ogawa I., Tokiyasu A., Matsubara A., Imai K., Sawada A., Matsuki S.

    Meeting Abstracts of the Physical Society of Japan　70　333-333　2015

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.70.2.0_333 　

  69. 26aSB-5 Search for the K^- pp bond state via the photo-induced reaction

    Tokiyasu A. O.

    Meeting Abstracts of the Physical Society of Japan　70　249-249　2015

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.70.2.0_249 　

  70. Development of the liquid hydrogen target system for the electromagnetic calorimeter BGOegg

    MURAMATSU Norihito, OHTA Takesi, YOSOI Masaru, OHASHI Yuji, CHANG Wen-Chen, CHEN Jia-Ye, DATE Schin, GOTO Hiroya, HAMANO Hirotomo, HASHIMOTO Toshikazu, HE Qing Hua, HICKS Kenneth, HIRAIWA Toshihiko, HONDA Yuki, HOTTA Tomoaki, IKUNO Hiroyuki, ISHIKAWA Takatsugu, JAEGLE Igal, KASAMATSU Yuuto, KIDO Satoshi, KON Yukitoshi, MASUMOTO Shinichi, MATSUMURA Yuji, MIYABE Manabu, MIZUTANI Keigo, NAKANO Takashi, NIIYAMA Masayuki, NOZAWA Yuki, OHKUMA Haruo, OHNISHI Hiroaki, OHNISHI Hiroaki, OKA Masaya, OZAWA Kyoichiro, SHIBUKAWA Takuya, SHIMIZU Hajime, SHIRAISHI Ken’ichiro, SUGAYA Yorihito, SUZUKI Shinsuke, TANAKA Shintaro, TOKIYASU Atsushi

    ELPH Annual Report　2014　2015

    ISSN： 2186-7968

  71. 25pSN-8 Profiling of GeV γ Beams with an X-ray pixel sensor

    Kanda H., Sasaki T., Tokiyasu A. O., Honda K., Ishikawa T., Kaneta M., Maeda K., Miyabe M., Nakamura S. N., Ninomiya A., Ozeki K.

    Meeting Abstracts of the Physical Society of Japan　70　(0)　72-72　2015

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.70.2.0_72 　

  72. 25pSN-9 Measurement of the charge integration of analog signals with a QTC discriminator

    Ishikawa T., Tsuchikawa Y., Yamazaki H., Tokiyasu A. O., Honda Y., Kanda H., Kido S., Matsumura Y., Miyabe M., Muramatsu N., Shimizu H.

    Meeting Abstracts of the Physical Society of Japan　70　(0)　73-73　2015

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.70.2.0_73 　

  73. 26pSH-10 Calibration of photon beam energy for FOREST upgrade experiment I

    Miyabe M., Honda Y., Maeda K., Matsumura Y., Muto T., Muramatsu N., Ishikawa T., Kanda H., Kido S., Shimizu H., Tsuchikawa Y., Tokoku C., Tokiyasu A. O., Nagasawa I.

    Meeting Abstracts of the Physical Society of Japan　70　(0)　288-288　2015

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.70.2.0_288 　

  74. 26pSH-11 Calibration of photon beam energy for FOREST upgrade experiment II

    Tokiyasu A. O., Maeda K., Matsumura Y., Miyabe M., Muto T., Muramatsu N., Ishikawa T., Kanda H., Kido S., Shimizu H., Tsuchikawa Y., Tokoku C., Nagasawa I., Honda Y.

    Meeting Abstracts of the Physical Society of Japan　70　(0)　289-289　2015

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.70.2.0_289 　

  75. 26pSF-11 FOREST upgrade plan to search for η-mesic nuclei

    Ishikawa T., Ozawa K., Shimizu H., Tokiyasu A. O., Tsuchikawa Y., Yamazaki H., Honda Y., Kanda H., Kido S., Maeda K., Matsumura Y., Miyabe M., Muramatsu N., Ohnishi H.

    Meeting Abstracts of the Physical Society of Japan　70　(0)　276-276　2015

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.70.2.0_276 　

  76. 新光子標準化装置STB TaggerⅡsで使用するMWDCの性能評価

    佐々木 未来, 本多 佑記, 井上 陽介, 石川 貴嗣, 岩佐 美和, 叶内 萌香, 木戸 聡, 松村 裕二, 三浦 大輔, 宮部 学, 村松 憲仁, 櫻井 輝昴, 笹川 瑞樹, 盛道 太郎, 関 悠登, 清水 肇, 田島 靖久, 高橋 季己, 時安 敦史, 土川 雄介, 吉田 浩司

    ELPH annual report　45-51　2015

    Publisher: 東北大学電子光理学研究センター

    ISSN： 2186-7968

  77. Backward-angle photoproduction of ω and ν ′ mesons from protons in the photon energy range from 1.5 to 3.0 GeV

    Y. Morino, Y. Nakatsugawa, M. Yosoi, M. Niiyama, M. Sumihama, T. Nakano, D. S. Ahn, J. K. Ahn, S. Ajimura, W. C. Chang, J. Y. Chen, S. Daté, H. Fujimura, S. Fukui, K. Hicks, T. Hiraiwa, T. Hotta, S. H. Hwang, K. Imai, T. Ishikawa, Y. Kato, H. Kawai, M. J. Kim, H. Kohri, Y. Kon, P. J. Lin, K. Mase, Y. Maeda, M. Miyabe, N. Muramatsu, H. Noumi, Y. Ohashi, T. Ohta, M. Oka, J. D. Parker, C. Rangacharyulus, S. Y. Ryu, T. Saito, T. Sawada, H. Shimizu, E. A. Strokovsky, Y. Sugaya, K. Suzuki, K. Tanida, A. Tokiyasu, T. Tomioka, T. Tsunemi, M. Uchida, R. Yamamura, T. Yorita

    Progress of Theoretical and Experimental Physics　2015　(1)　2014/10/10

    DOI： 10.1093/ptep/ptu167 　

    ISSN： 2050-3911

    eISSN： 2050-3911

  78. Inclusive spectrum of the d(π+, K+) reaction at 1.69∈GeV/c

    Yudai Ichikawa, Tomofumi Nagae, Hyoungchan Bhang, Stefania Bufalino, Hiroyuki Ekawa, Petr Evtoukhovitch, Alessandro Feliciello, Hiroyuki Fujioka, Shoichi Hasegawa, Shuhei Hayakawa, Ryotaro Honda, Kenji Hosomi, Ken'Ichi Imai, Shigeru Ishimoto, Changwoo Joo, Shunsuke Kanatsuki, Ryuta Kiuchi, Takeshi Koike, Harphool Kumawat, Yuki Matsumoto, Koji Miwa, Manabu Moritsu, Megumi Naruki, Masayuki Niiyama, Yuki Nozawa, Ryosuke Ota, Atsushi Sakaguchi, Hiroyuki Sako, Valentin Samoilov, Susumu Sato, Kotaro Shirotori, Hitoshi Sugimura, Shoji Suzuki, Toshiyuki Takahashi, Tomonori N. Takahashi, Hirokazu Tamura, Toshiyuki Tanaka, Kiyoshi Tanida, Atsushi O. Tokiyasu, Zviadi Tsamalaidze, Bidyut Roy, Mifuyu Ukai, Takeshi O. Yamamoto, Seongbae Yang

    Progress of Theoretical and Experimental Physics　2014　(10)　2014/07/02

    DOI： 10.1093/ptep/ptu128 　

    ISSN： 2050-3911

    eISSN： 2050-3911

  79. 28pTF-1 The design and performance of Silica Aerogel Cherenkov Counter for SPring-8/LEPS2

    Shibuya S., Sumihama M., Ohta T., Tokiyasu A., Niiyama M., Yosoi M., LEPS collaboration

    Meeting abstracts of the Physical Society of Japan　69　(1)　93-93　2014/03/05

    Publisher: The Physical Society of Japan (JPS)

    DOI： 10.11316/jpsgaiyo.69.1.1.0_93_4 　

    ISSN： 1342-8349

  80. Study of kaonic nuclei by the d(φ+;K+) reaction at J-PARC

    Yudai Ichikawa, H. C. Bhang, S. Bufalino, H. Ekawa, P. Evtoukhovitch, A. Feliciello, H. Fujioka, S. Hasegawa, S. Hayakawa, R. Honda, K. Hosomi, K. Imai, S. Ishimoto, W. C. Joo, S. Kanatsuki, R. Kiuchi, T. Koike, H. Kumawat, Y. Matsumoto, K. Miwa, T. Nagae, M. Naruki, M. Niiyama, Y. Nozawa, R. Ota, A. Sakaguchi, H. Sako, V. Samoilov, S. Sato, K. Shirotori, H. Sugimura, S. Suzuki, T. Takahashi, T. N. Takahashi, H. Tamura, T. Tanaka, K. Tanida, A. O. Tokiyasu, Z. Tsamalaidze, B. J. Roy, M. Ukai, T. O. Yamamoto, S. B. Yang

    Proceedings of Science　2013

    eISSN： 1824-8039

  81. 11pSH-7 Performance of range counters for antikaon nuclear state search experiment at J-PARC

    Ekawa H., Sada Y., Shirotori K., Sugimura H., Takahashi T., Tamura H., Tokiyasu A., Toyoda A., Naruki M., Fujioka H., Hosomi K., Nagae T., Miwa K., Moritsu M., Adachi S., Asano H., Ishimoto S., Ichikawa Y., Imai K., Kanatsuki S., Koike T.

    Meeting Abstracts of the Physical Society of Japan　67　15-15　2012

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.67.2.1.0_15_1 　

  82. 14aSC-5 Search for K^-_<pp> bound state via the d(π^+,K^+) reation

    Ichikawa Y., Shirotori K., Sugimura H., Takahashi T., Tamura H., Tokiyasu A. O., Toyoda A., Nagae T., Naruki M., Fujioka H., Hosomi K., Adachi S., Miwa K., Moritsu M., Asano H., Ishimoto S., Imai K., Ekawa H., Kanatsuki S., Koike T., Sada Y.

    Meeting Abstracts of the Physical Society of Japan　67　(0)　91-91　2012

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.67.2.1.0_91_3 　

  83. 26pGH-4 J-PARCにおけるK^-pp束縛状態探索実験(E27実験)に用いるレンジカウンターの開発(2)(26pGH 理論核物理領域,実験核物理領域合同 ハイパー核・ストレンジネスII(合同),理論核物理領域)

    市川 裕大, 高橋 俊行, 田村 裕和, 豊田 晃久, 時安 敦史, 永江 知史, 成木 恵, 藤岡 宏之, 細見 健二, 三輪 浩司, 森津 学, 足立 智, 浅野 光秀, 石元 茂, 今井 憲一, 小池 武志, 佐田 優太, 白鳥 昂太郎, 杉村 仁志

    日本物理学会講演概要集　66　(0)　51-51　2011

    Publisher: 一般社団法人 日本物理学会

    DOI： 10.11316/jpsgaiyo.66.1.1.0_51_3 　

  84. 25aGK-1 Performance evaluation of the SKS and K1.8 beamline spectrometer

    Iwasaki R., Hosomi K., Miwa K., Yonemoto Y., Moritsu M., the K. collaboration, Adatchi S., Sawada S., Shirotori K., Takahashi T., Takahashi T. N., Tanaka K., Tokiyasu A., Naruki M.

    Meeting Abstracts of the Physical Society of Japan　66　(0)　70-70　2011

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.66.1.1.0_70_1 　

  85. High-rate position detectors at K1.8 beam line in J-PARC Hadron Hall

    TAKAHASHI T., TAKAHASHI T. N., TOKIYASU A. O.

    Ionizing radiation.　36　(3)　107-116　2010/09/01

    Publisher: 応用物理学会放射線分科会

    ISSN： 0285-3604

  86. Beam Test of J-PARC K1.8 Beam Line Chambers

    42　47-52　2010

    Publisher: 東北大学電子光理学研究センター

    ISSN： 0385-2105

  87. 23aBC-7 核内ω中間子質量分布測定のための検出器開発の現状(23aBC 実験核物理領域,理論核物理領域合同 ハドロン構造・相互作用・中間子生成(合同),実験核物理領域)

    桝本 新一, 四日市 悟, 渡辺 陽介, 青木 和也, 宇都宮 和樹, 小沢 恭一郎, 小松 雄哉, 高橋 俊行, 辻 智也, 時安 敦史, 成木 恵

    日本物理学会講演概要集　65　95-95　2010

    Publisher: 一般社団法人 日本物理学会

    DOI： 10.11316/jpsgaiyo.65.1.1.0_95_2 　

  88. 23pBS-10 Data acquisition system for experiments of hypernuclear/hadron spectroscopy at J-PARC K1.8 beamline

    Takahashi Tomonori, Itahashi Kenta, Takahashi Toshiyuki, Kiuchi Ryuta, Igarashi Youichi, Ikeno Masahiro, Tokiyasu Atsushi, Moritsu Manabu, Sugimura Hitoshi, Hosomi Kenji

    Meeting Abstracts of the Physical Society of Japan　65　101-101　2010

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.65.1.1.0_101_2 　

  89. 12aSK-9 J-PARCにおけるK^-pp束縛状態探索実験(E27実験)に用いるレンジカウンターの開発(12aSK 検出器II,実験核物理領域)

    市川 裕大, 高橋 俊行, 田村 裕和, 豊田 晃久, 時安 敦史, 永江 知文, 成木 恵, 藤岡 宏之, 細見 健二, 三輪 浩司, 森津 学, 足立 智, 浅野 秀光, 石元 茂, 今井 憲一, 小池 武志, 佐田 優太, 白鳥 昂太郎, 杉村 仁志

    日本物理学会講演概要集　65　(0)　66-66　2010

    Publisher: 一般社団法人 日本物理学会

    DOI： 10.11316/jpsgaiyo.65.2.1.0_66_2 　

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Presentations 3

  1. EDAMAME project: Results of Axion Search in the First Pilot Run

    2025/03/19

  2. LEPS/LEPS2でのストレンジネス核物理 Invited

    時安敦史

    ストレンジネス核物理の来し方行く末　2024/10/05

  3. ガンマ線を使った 素粒子標準模型を超えた物理の探索 Invited

    時安敦史

    RARiS研究会「加速器を用いたガンマ線ビームの生成、基礎科学と産業分野への利用」　2024/09/11

Research Projects 8

  1. Xi-hyper nuclei spectroscopy with thick nuclear targets and silicon strip detectors

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2022/04/01 - 2026/03/31

  2. Xi-hyper nuclei spectroscopy with thick nuclear targets and silicon strip detectors

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2022/04/01 - 2026/03/31

  3. Study of the origin of hadron mass via eta-prime photoproduction inside a nucleus

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (S)

    Institution: Tohoku University

    2021/07/05 - 2026/03/31

  4. 次世代ハドロン光生成実験に向けたアンジュレータ光コンプトン散乱ビームの開発

    宮部 学, 鈴木 伸介, 伊達 伸, 清水 肇, 村松 憲仁, 時安 敦史

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(B)

    Institution: 東北大学

    2024/04/01 - 2025/03/31

  5. 次世代ハドロン光生成実験に向けたアンジュレータ光コンプトン散乱ビームの開発

    宮部 学, 鈴木 伸介, 清水 肇, 村松 憲仁, 時安 敦史, 大熊 春夫

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(B)

    Institution: 東北大学

    2022/04/01 - 2025/03/31

  6. Search for dark matter with superconducting device

    Tokiyasu Atsushi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2016/04/01 - 2020/03/31

    More details Close

    The purpose of this research is to perform the search for the missing particle, axion. Axion is one of the candidate of the cosmic dark matter. An axion is believed to be converted to one photon under a strong magnetic field. There is a theoretical approach that a strong magnetic field exists inside SNS-type superconducting devices. In the current and conductance curve of such device, a peak structure corresponding axion signal may appear. Based on this idea, we constructed a SNS-type superconducting device, and measured the current-conductance curve. Due to the large noize, we were not able to observe axion signal in the spectrum. We also clarified the controversial points of the theoretical prediction in the discussion with some other groups.

  7. Saerch for dark matter axion

    OGAWA Izumi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: University of Fukui

    2016/04/01 - 2020/03/31

    More details Close

    Dark matter is one of the most important unsolved problems in modern astrophysics. Assuming that the true nature of the dark matter is undiscovered elementary particle axions, we have developed a CARRACK system to search for. Since the mass of the axion is unknown and its signal is considered to be very weak, it is necessary to realize low noise and stable experiments over a long period of time while changing the mass of interest. In order to reduce the noise level, we developed a bunching atomic beam generator using laser cooling and acceleration technology. The field ionization detection system has been improved to achieve a stable operation for a long time. After fixing some problems, we will start to search for the dark matter axions.

  8. 光生成反応による反K中間子原子核探索のための粒子識別検出器開発

    時安 敦史

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 新学術領域研究(研究領域提案型)

    Institution: 東北大学

    2015/04/01 - 2017/03/31

    More details Close

    本研究の目的は光生成反応を用いて、現在、存否が議論されているK-pp束縛状態、K-pn束縛状態を探索することである。これらの束縛状態は、K-中間子、二つの核子から構成され、理論的に存在が示唆されているが、確たる実験結果は存在していない。過去の探索実験は、π中間子、K中間子、陽子等のハドロンビームを用いて行われてきたが、本研究は電磁プローブである光反応を用いて探索を行うことに特徴がある。 実験はSPring-8で遂行中のLEPS2実験において行う。反応はγd -> Ks K-pp反応を用いる。K-pp束縛状態の崩壊粒子であるΛ粒子、および陽子を大立体角検出器群、LEPS2スペクトロメータを用いて検出する。反応に寄与する粒子をすべて検出する完全実験を目指し、不確定性の少ない測定を目指す。 本研究では、荷電粒子識別、およびデータ取得トリガーを生成するスタートカウンター（SC）、検出器群前方に配置し、K中間子を識別するエアロジェルカウンター（AC）、ビームライン上に配置し、ビーム強度、ビーム形状を常時測定するビームプロファイルモニター（BPM）を開発した。また、SPring-8、東北大学電子光理学研究センター等でビームを用いた性能評価実験を行った。各々の検出器の概要、設計思想、性能に関しては、日本物理学会などで報告されている。これらの検出器は2016年12月に行われたLEPS2実験の初期ランに使用され、データ解析が進められている。 また、本研究ではLEPS2実験の前身実験であるLEPS実験で取得された既存データをもちいて、LEPS2実験でK-pp束縛状態を探索する妥当性について、異なった反応を用いて検討を行った。これらの結果については、国際学会、また国際ワークショップなどにおいて報告された。

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