Ultralow radioactivity measurements for next generation double beta decay experiments

2012 Fiscal Year Final Research Report

• Project/Area Number: 21340060
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Osaka University
• Principal Investigator: NOMACHI Masaharu 大阪大学, 核物理研究センター, 教授 (90208299)
• Co-Investigator(Kenkyū-buntansha): SUGAYA Yorihito 大阪大学, 核物理研究センター, 助教 (80324747)
• Project Period (FY): 2009 – 2012
• Keywords: 素粒子(実験)

Research Abstract

SuperNEMO is a next generation double beta decay experiment. It requires high-purity low-background source foil. We have developed BiPo detector to measure radio-purity of the foil with the sensitivity of 2μBq/kg for 208Tl and 10μBq/kg for 214Bi. Data acquisition system to measure Bi-Po sequential decal is developed. The system is installed in CANDLES experiment, which is a double beta decay experiment operated in Kamioka underground laboratory.

Research Products

• [Journal Article] Study of Ca-48 double beta decay by CANDLES CANDLES Collaboration (2012)
  • Author(s): I. Ogawa (Fukui U.), T. Kishimoto (Osaka U. & Osaka U., Res. Ctr. Nucl. Phys.) , S. Umehara (Osaka U., Res. Ctr. Nucl. Phys.) , G. Ito, K. Yasuda, H. Kakubata, M. Miyashita, K. Takubo, K. Matsuoka, M. Nomachi, M. Saka, K. Seki (Osaka U.) , K. Fushimi (Tok
  • Journal Title: J.Phys.Conf.Ser. Volume: 375 Pages: 042018
  • DOI: DOI:10.1088/1742-6596/375/1/042018
• [Journal Article] The BiPo detector for ultralow radioactivity measurements SuperNEMO Collaboration (Mathieu Bongrand (Orsay, LAL) for the collaboration) (2011)
  • Journal Title: AIP Conf.Proc. Volume: 1338 Pages: 49-58
  • DOI: DOI:10.1063/1.3579559
• [Journal Article] Neutrino-less double beta decay of (48)Ca -CANDLES (2011)
  • Author(s): T. Kishimoto , S. Yoshida, K. Matsuoka, K. Ichimura, G. Ito, K. Yasuda, H. Kakubata, M. Miyashita, K. Takubo, M. Nomachi, M. Saka, K. Seki, S. Ajimura, S. Umehara, N. Nakatani, Y. Tamagawa, I. Ogawa, R. Hazama, H. Ohsumi, K. Okada, Y. Fujii
  • Journal Title: AIP Conf.Proc Volume: 1338 Pages: 142-148
  • DOI: DOI:10.1063/1.3647363
• [Journal Article] The BiPo detectorSuperNEMO Collaboration (2010)
  • Author(s): S. Cebrian Zaragoza U
  • Journal Title: J.Phys.Conf.Ser Volume: 203 Pages: 012131
  • DOI: DOI:10.1088/1742-6596/203/1/012131
• [Journal Article] Study of double beta decay of Ca-48 by CANDLES (2010)
  • Author(s): S. Umehara, T. Kishimoto, I. Ogawa, K. Matsuoka, G. Ito, K. Yasuda, H. Kakubata, M. Miyashita, M. Nomachi (Osaka U.) , S. Ajimura (Osaka U., Res. Ctr. Nucl. Phys.) Y. Tamagawa (Fukui U.) , K. Fushimi (Tokushima U.) , R. Hazama (Hiroshima U.) , H. Ohsumi (
  • Journal Title: AIP Conf.Proc. Volume: 1235 Pages: 287-293
  • DOI: DOI:10.1063/1.3442610
• [Journal Article] Probing New Physics Models of Neutrinoless Double Beta Decay with SuperNEMOSuperNEMO Collaboration (2010)
  • Author(s): R. Arnold, M. Nomachi (Osaka U.)他
  • Journal Title: Eur.Phys.J. Volume: C70 Pages: 927-943
  • DOI: DOI:10.1140/epjc/s10052-010-1481-5
  • Peer Reviewed
• [Journal Article] Results of the BiPo-1 prototype for radiopurity measurements for the SuperNEMO double beta decay source foilsSuperNEMO Collaboration (2010)
  • Author(s): J. Argyriades, M. Nomachi (Osaka U.)他
  • Journal Title: Eur.Phys.J Volume: C70 Pages: 927-943
  • DOI: DOI:10.1140/epjc/s10052-010-1481-5
  • Peer Reviewed
• [Journal Article] Study of Ca-48 double beta decay with CANDLES (2010)
  • Author(s): I. Ogawa, T. Kishimoto, S. Umehara, G. Ito, K. Yasuda, M. Wada, K. Matsuoka, M. Nomachi, K. Fushimi, R. Hazama, H. Ohsumi, K. Okada, Y. Tamagawa, S. Yoshida
  • Journal Title: J.Phys.Conf.Ser Volume: 203 Pages: 012073
  • DOI: DOI:10.1088/1742-6596/203/1/012073
• [Journal Article] H.H. Vo, S. Kanamaru, H. Nakamura, M. Nomachi, Y. Sugaya (Osaka U.) , C. Marquet, F. Piquemal, J.S. Ricol (CENBG, Gradignan) , K. Yasuda (Wakasa Wan Eng. Res. Ctr.) (2008)
  • Author(s): Energy resolution of plastic scintillation detector for beta rays
  • Journal Title: IEEE Trans.Nucl.Sci. Volume: 55 Pages: 3717-3724
  • DOI: DOI:10.1109/TNS.2008.2005718
  • Peer Reviewed
• [Presentation] CANDLES による二重ベータ崩壊の研究(70) - トリガーシステムの改良 - (2013)
  • Author(s): 石川貴志,市村晃一,梅原さおり A,岸本忠史,坂雅幸,菅谷頼仁,鈴木耕拓,田中大樹,田中美穂,能町正治 A,吉田斉
  • Organizer: 日本物理学会 第68回年次大会
  • Place of Presentation: 広島大学・東広島市
  • Year and Date: 2013-03-29
• [Presentation] CANDLES による二重ベータ崩壊の研究(73) -連続崩壊事象を用いたエネルギーと位置較正- (2013)
  • Author(s): 田中大樹,市村晃一,梅原さおり,菅谷頼仁,鈴木耕拓,能町正治,吉田斉、,for the CANDLES Collaboration,岸本忠史
  • Organizer: 日本物理学会 第68回年次大会
  • Place of Presentation: 広島大学・東広島市
  • Year and Date: 2013-03-29
• [Presentation] CANDLES による二重ベータ崩壊の研究(68)-CANDLES 用 DAQ-Middleware の開発II- (2012)
  • Author(s): 前田翔平,小川泉,玉川洋一,能町正治 A,鈴木耕拓 A,味村周平 B
  • Organizer: for the CANDLES Collaboration福井大工,阪大理 A,阪大 RCNPB日本物理学会 2012 年秋季大会
  • Place of Presentation: 京都産業大学
  • Year and Date: 20120911-14
• [Presentation] CANDLES による二重ベータ崩壊の研究(61)-CANDLES 用 DAQ-Middleware の開発- (2012)
  • Author(s): 前田翔平,小川泉,玉川洋一,能町正治,味村周平
  • Organizer: 日本物理学会 第67回年次大会
  • Place of Presentation: 関西学院大学・西宮市
  • Year and Date: 2012-03-24
• [Presentation] Data acquisition system of CANDLES detector for double beta decay experiment (2011)
  • Author(s): Umehara, S. ; Nomachi, M. ; Sugaya, Y. ; Saka, M. ; Seki, K. ; Ito, G. ; Ajimura, S. ; Tamagawa, Y.
  • Organizer: Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)
  • Place of Presentation: Valencia, Spain
  • Year and Date: 2011-10-27
• [Presentation] ホスビッチ検出器を用いた Bi-Po 連続崩壊の高精度測定 (2010)
  • Author(s): 坂雅幸
  • Organizer: 日本物理学会
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-21