Development of a waveform readout system for germanium detectors

• Project/Area Number: 26800152
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: Kenji Hosomi 国立研究開発法人日本原子力研究開発機構, バックエンド研究開発部門 核燃料サイクル工学研究所 放射線管理部, 技術員 (40710380)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: ゲルマニウム半導体検出器 / 波形読み出し

Outline of Final Research Achievements

Purpose of this work is to develop a new readout system of germanium detectors based on digital waveform sampling and analysis. I developed a waveform readout system and its performance was tested. I also developed a LSO pulsar system using LSO scintillators for in-beam energy calibration and FPGA circuits for data acquisition system.
These outcomes of this work are applied for germanium detector arrays (Hyperball-J and Hyperball-X) in J-PARC experiments.

Research Products

• [Journal Article] The First Determination of the Level Structure ofan sd-shell Hypernucleus 19F(Lambda) (2018)
  • Author(s): S.B.Yang, S.Hasegawa, K.Imai et al.,
  • Journal Title: Phys. Rev. Lett. Volume: 120 Issue: 13 Pages: 132505-132505
  • DOI: 10.1103/physrevlett.120.132505
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Precise determination of 12-Lambda-C level structure by γ-ray spectroscopy (2015)
  • Author(s): Kenji Hosomi, Yue Ma, Shuhei Ajimura, Kanae Aoki, Seishi Dairaku, Yuanyong Fu, Hiroyuki Fujioka, Kenta Futatsukawa, Wataru Imoto, Yutaka Kakiguchi, Masaharu Kawai, Sari Kinoshita, Takeshi Koike, Nayuta Maruyama, Masahiro Mimori, Shizu Minami, Yusuke Miura, Koji Miwa, Yohei Miyagi, Tomofumi Nagae, et al.
  • Journal Title: Progress of Theoretical and Experimental Phyiscs Volume: 081D01 Issue: 8 Pages: 1-8
  • DOI: 10.1093/ptep/ptv113
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Observation of Spin-Dependent Charge Symmetry Breaking in ΛN Interaction: Gamma-ray Spectroscopy of 4-Lambda-He (2015)
  • Author(s): T. O. Yamamoto, M. Agnello, Y. Akazawa, N. Amano, K. Aoki, E. Botta, N. Chiga, H. Ekawa, P. Evtoukhovitch, A. Feliciello, M. Fujita, T. Gogami, S. Hasegawa, S. H. Hayakawa, T. Hayakawa, R. Honda, K. Hosomi, S. H. Hwang, N. Ichige, Y. Ichikawa, et al.
  • Journal Title: Physical Review Letters Volume: 115 Issue: 22 Pages: 222501-222501
  • DOI: 10.1103/physrevlett.115.222501
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Development of a low-temperature germanium detector via mechanical cooling with a compact pulse-tube refrigerator (2014)
  • Author(s): T. Koike, H. Tamura et al.
  • Journal Title: Nuclear Instrument and Method A Volume: 770 Pages: 1-7
  • DOI: 10.1016/j.nima.2014.09.084
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Hypernuclear gamma spectroscopy (2016)
  • Author(s): Kenji Hosomi
  • Organizer: The 31st Reimei Workshop on Hadron Physics in Extreme Conditions at J-PARC
  • Place of Presentation: Advanced Science Reseach Center (ASRC), JAEA Tokai Campus (Naka-gun, Ibaraki)
  • Year and Date: 2016-01-18
  • Int'l Joint Research / Invited
• [Presentation] Ξ原子のX線分光用Ge検出器アレイの開発 (2015)
  • Author(s): 細見健二
  • Organizer: 日本物理学会
  • Place of Presentation: 大阪市立大学杉本キャンパス（大阪府・大阪市）
  • Year and Date: 2015-09-25
• [Presentation] Ge検出器の波形読み出し (2014)
  • Author(s): 細見健二
  • Organizer: Open-It若手の会「若手研究会2014」
  • Place of Presentation: 宮崎
  • Year and Date: 2014-10-02 – 2014-10-04