Development of a pi0 spectrometer system for hypernuclear gamma-ray spectroscopy

• Project/Area Number: 24740138
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Tohoku University
• Principal Investigator: UKAI Mifuyu 東北大学, 理学(系)研究科(研究院), 助教 (30420053)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2014: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000); Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2012: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: ハイパー核 / ガンマ線分光 / ガンマ線分光実験

Outline of Final Research Achievements

Purpose of this work is to investigate a charge symmetry breaking between the 4-Lambda-H and the 4-Lambda-He hypernuclei via the gamma-ray spectroscopy. To observe a 4-Lambda-He gamma-ray, J-PARC E13 was planned and will be held in 2015.I prepared the whole system of E13, in particular, wide acceptance pi-spectrometer,SksMinus.On the other hand, To observe a 4-Lambda-H gamma-ray, pi0 spectrometer to tag the (K-,pi0) reaction is needed.So that, in this work, pi0 spectrometer was developed. In particular, lead-glass calorimeter as a EM shower counter system was studied.

Research Products

• [Journal Article] Search for 6LH hypernucleus by the ^6Li (π-, K+) reaction at pπ=1.2 GeV/c (2014)
  • Author(s): 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, et al.
  • Journal Title: Physics Letter B Volume: 729 Pages: 39-44
  • DOI: 10.1016/j.physletb.2013.12.062
  • Peer Reviewed
• [Journal Article] High Precision γ-ray Spectroscopy of 4ΛHe and 19ΛF at J-PARC (2014)
  • Author(s): S.B. Yang, T. Koike, K. Miwa, H. Tamura et al.
  • Journal Title: JPS Conference proceedings Volume: 1 Pages: 0130761-5
  • DOI: 10.7566/jpscp.1.013076
  • Peer Reviewed
• [Journal Article] Study on 6ΛH hypernucleus by the (π-,K+) reaction at J-PARC (2014)
  • Author(s): H. Sugimura, T. Takahashi, H. Tamura et al. (J-PARC10 collaboration)
  • Journal Title: EPJ Web Conference Volume: 66 Pages: 09017-09017
  • DOI: 10.1051/epjconf/20146609017
  • Open Access
• [Journal Article] Gamma-ray spectroscopy of 12ΛC via the (π+,K+) reaction (2013)
  • Author(s): K. Hosomi, H. Tamura et al.
  • Journal Title: Nuclear Physics A Volume: 914 Pages: 184-188
  • DOI: 10.1016/j.nuclphysa.2013.04.007
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Gamma-ray spectroscopy of hypernuclei-present and future (2013)
  • Author(s): H. Tamura, et al.
  • Journal Title: Nucl. Phys. A Volume: (In press) Pages: 99-108
  • DOI: 10.1016/j.nuclphysa.2013.03.014
  • Peer Reviewed
• [Journal Article] Search for the (-)+pentaquark via the π- p-> K- X reaction at 1.92 GeV/c (2013)
  • Author(s): K. Shirotori, et al.
  • Journal Title: Phys. Rev. Lett. Volume: 109 Issue: 13 Pages: 132-002
  • DOI: 10.1103/physrevlett.109.132002
  • Peer Reviewed
• [Journal Article] Beam and SKS spectrometers at the K1.8 beam line (2012)
  • Author(s): T. Takahashi, et al.
  • Journal Title: Prog. Theor. Exp. Phys. Volume: 2012 Issue: 1 Pages: 1-16
  • DOI: 10.1093/ptep/pts023
  • Peer Reviewed
• [Journal Article] Secondary charged beam lines at the J-PARC hadron experimental hall (2012)
  • Author(s): Keizo Agari, et al.
  • Journal Title: Prog. Theor, Exp. Phys. Volume: 2012 Issue: 1 Pages: 1-10
  • DOI: 10.1093/ptep/pts038
  • Peer Reviewed
• [Journal Article] Study of Λ hypernuclei using hadron beams and γ-ray spectroscopy at J-PARC (2012)
  • Author(s): H.Tamura, M.Ukai, T.O.Yamamoto, T.Koike
  • Journal Title: Nucl.Phys.A Volume: (In Press) Pages: 310-321
  • DOI: 10.1016/j.nuclphysa.2012.02.013
  • Peer Reviewed
• [Presentation] Prospect of A=4 hypernculear spectroscopy with Hyperball-J (2014)
  • Author(s): Mifuyu Ukai
  • Organizer: 3rd Korea-Japan on Nuclear and Hadron Physics at J-PARC
  • Place of Presentation: Inha University, 仁川, 韓国
• [Presentation] Study of the Lambda g-factor in hypernuclei via the gamma-ray spectroscopy at J-PARC (2013)
  • Author(s): Mifuyu Ukai
  • Organizer: Hadron in Nucleus
  • Place of Presentation: 京都大学
• [Presentation] Prospect for the γ-ray spectroscopy of 4ΛH and 4ΛHe hypernuclei at J-PARC (2012)
  • Author(s): M. Ukai
  • Organizer: Few body problem in Physics
  • Place of Presentation: 福岡市
• [Presentation] Study of the Lambda spin-flip B(M1) in hypernuclei via the gamma-ray spectroscopy at J-PARC (2012)
  • Author(s): M. Ukai for the E13 collaboration
  • Organizer: Hypernuclear and Strange nuclear physics
  • Place of Presentation: Barcelona Spain
• [Presentation] Prospect for the B(M1) measurement in 7LLi and 19LF ground statet doublets (2012)
  • Author(s): M. Ukai for the E13 collaboration
  • Organizer: JPSP core-to-core seminor
  • Place of Presentation: Barcelona Spain