High pressure xenon gas detector development for direction-sensitive dark matter search with large mass

• Project/Area Number: 18K13567
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics
• Research Institution: Tohoku University (2021); The University of Tokyo (2020); Kobe University (2018-2019)
• Principal Investigator: Nakamura Kiseki 東北大学, 理学研究科, 助教 (80750463)
• Project Period (FY): 2018-04-01 – 2022-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: ダークマター / キセノンガス / TPC / 柱状再結合 / キセノン / 放射線検出器 / 飛跡 / 中性子 / 暗黒物質 / ガス検出器

Outline of Final Research Achievements

In dark matter search, there is a technique that can achieve both large target mass and directional sensitivity by applying columnar recombination phenomena in high-pressure xenon gas TPC. In this study, we report the results of confirming the occurrence of columnar recombination at 5 MeV alpha-rays. Neutron beam experiments were also conducted with a view to measuring columnar recombination at low energy nuclear recoil.

Academic Significance and Societal Importance of the Research Achievements

柱状再結合現象が荷電粒子の角度に応じた変化があるかどうかは、検出器の新しい使い方をする上で興味深い測定と考えている。今回、5MeVのα線での観測に成功しており、本研究期間中に系統的な誤差について評価を行い査読付き論文としての出版ができた点が1つ目の成果となる。また、実際の暗黒物質探索への応用を見据え、中性子ビーム試験の実施準備を完遂させた。コロナの影響で試験自体が本研究期間を少し過ぎてしまったが、試験によるデータ取得も問題なく実施することができた。

Research Products

• [Journal Article] Energy deposition on nuclear emulsion by slow recoil ions for directional dark matter searches (2022)
  • Author(s): Hitachi Akira、Mozumder A.、Nakamura Kiseki D.
  • Journal Title: Physical Review D Volume: 105 Issue: 6 Pages: 063014-063014
  • DOI: 10.1103/physrevd.105.063014
  • Peer Reviewed / Open Access
• [Journal Article] Detection capability of the Migdal effect for argon and xenon nuclei with position-sensitive gaseous detectors (2020)
  • Author(s): Nakamura Kiseki D、Miuchi Kentaro、Kazama Shingo、Shoji Yutaro、Ibe Masahiro、Nakano Wakutaka
  • Journal Title: Progress of Theoretical and Experimental Physics Volume: 2021 Issue: 1
  • DOI: 10.1093/ptep/ptaa162
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Design and performance of a high-pressure xenon gas TPC as a prototype for a large-scale neutrinoless double-beta decay search (2020)
  • Author(s): Ban S、Hirose M、Ichikawa A K、Iwashita Y、Kikawa T、Minamino A、Miuchi K、Nakadaira T、Nakajima Y、Nakamura K D、Nakamura K Z、Nakaya T、Obara S、Sakashita K、Sekiya H、Sugashima B、Tanaka S、Ueshima K、Yoshida M
  • Journal Title: Progress of Theoretical and Experimental Physics Volume: 2020 Issue: 3
  • DOI: 10.1093/ptep/ptaa030
  • Peer Reviewed / Open Access
• [Journal Article] Angular dependence of columnar recombination in high pressure xenon gas using time profiles of scintillation emission (2018)
  • Author(s): K.D. Nakamura, S. Ban, M. Hirose, A.K. Ichikawa, Y. Ishiyama, A. Minamino, K. Miuchi, T. Nakaya, H. Sekiya, S. Tanaka and K. Ueshima
  • Journal Title: Journal of Instrumentation Volume: 13 Issue: 07 Pages: P07015-P07015
  • DOI: 10.1088/1748-0221/13/07/p07015
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] キセノンガス検出器を用いたミグダル効果観測に向けた中性子ビーム試験結果 (2022)
  • Author(s): 中村輝石
  • Organizer: 日本物理学会 第77回年次大会
• [Presentation] 希少事象探索にむけた高圧キセノンガスによる放射線検出器開発 (2022)
  • Author(s): 中村輝石
  • Organizer: 日本物理学会 第77回年次大会 シンポジウム講演
• [Presentation] ガス検出器を用いたミグダル事象の観測可能性について (2020)
  • Author(s): 中村輝石、身内賢太朗、伊部昌宏、風間慎吾
  • Organizer: 日本物理学会 第75回年次大会
• [Presentation] 高圧キセノンガス検出器による原子核反跳の測定 (2019)
  • Author(s): 中村輝石、市川温子、中家剛、小原脩平、潘晟、吉田将、中村和広、菅島文悟
  • Organizer: 日本物理学会 2019年秋季大会
• [Presentation] Columnar recombination study in high pressure xenon gas for direction-sensitive dark matter search (2018)
  • Author(s): Kiseki Nakamura, A.K.Ichikawa, T.Nakaya, T.Kikawa, S.Obara, Y.Ishiyama, S.Ban, S.Tanaka, K.Z.Nakamura, M.Yoshida, M.Hirose, Y.Iwashita, A.Minamino, H.Sekiya, Y.Nakajima, K.Ueshima, K.Miuchi, K.Sakashita, T.Nakadaira
  • Organizer: DBD18
  • Int'l Joint Research
• [Presentation] Angular dependence of columnar recombination in high pressure xenon gas using time profile of scintillation emission (2018)
  • Author(s): Kiseki Nakamura for the AXEL collaboration
  • Organizer: XeSAT2018
  • Int'l Joint Research
• [Remarks] ミグダル観測検討会2020
  • URL: https://ppwww.phys.sci.kobe-u.ac.jp/~newage/migdal2020/index.html
• [Remarks]
  • URL: https://www-he.scphys.kyoto-u.ac.jp/research/Neutrino/AXEL/index.html