Study of giant resonances in neutron drip line nuclei - Related detector development for real-time particle identification

2017 Fiscal Year Annual Research Report

• Project/Area Number: 16H06716
• Research Institution: The University of Tokyo
• Principal Investigator: Stuhl Laszlo 東京大学, 大学院理学系研究科(理学部), 特任研究員 (20785232)
• Project Period (FY): 2016-08-26 – 2018-03-31
• Keywords: PANDORA / online pulse processing

Outline of Annual Research Achievements

I designed and constructed a new detector device, PANDORA, with real-time pulse processing for neutron-gamma discrimination. The online neutron-gamma separation enables one to reject the 95% of gamma-ray background. PANDORA can be used extensively in any (p,n), (d,n), (γ,n) reactions where the increased signal-to-noise ratio is crucial. The properties of the device and the details of online separation were reported Nuclear Instruments and Methods in Physics Research A journal (L. Stuhl et al, NIM A 2017, 866: 164-171) and selected as an oral/poster presentation on large international nuclear physics conferences (INPC 2016/ARIS 2017).
We successfully studied the spin-isospin response of 6He at HIMAC facility in Chiba(H391 experimental program), to investigate the GT transitions in 6He. We successfully commissioned our new digital readout based low-energy neutron detector PANDORA and its pulse shape discrimination capability.

Research Progress Status

29年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

29年度が最終年度であるため、記入しない。

Research Products

• [Journal Article] PANDORA, a large volume low-energy neutron detector with real-time neutron?gamma discrimination (2017)
  • Author(s): Stuhl L.、Sasano M.、Yako K.、Yasuda J.、Baba H.、Ota S.、Uesaka T.
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Volume: 866 Pages: 164～171
  • DOI: 10.1016/j.nima.2017.06.015
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A New Low-energy Plastic Scintillation Neutron Detector For Real Time Pulse Shape Discrimination (2017)
  • Author(s): Stuhl Laszlo、Sasano Masaki、Yako Kentaro、Yasuda Jumpei、Baba Hidetada、Ota Shinsuke、Uesaka Tomihiro
  • Journal Title: Proceedings of Science Volume: 085 Pages: 1～6
  • DOI: https://doi.org/10.22323/1.281.0085
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Experimental setup of the 6He(p, n) measurement at HIMAC and identification of the charge-exchange (p,n) reaction channel (2017)
  • Author(s): Stuhl Laszlo、Yako Kentaro、Sasano Masaki、Yasuda Jumpei、Baba Hidetada、Ota Shinsuke、Uesaka Tomihiro
  • Journal Title: Annual report of CNS, University of Tokyo Volume: 2016 Pages: 1-2
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Study of the Gamow-Teller transitions in 6He with PANDORA system (17H391) (2018)
  • Author(s): Stuhl Laszlo
  • Organizer: 2017 Annual Report of the Research Project with Heavy Ions at NIRS-HIMAC
  • Int'l Joint Research
• [Presentation] Study of Gamow-Teller Transition on 6He with PANDORA (2018)
  • Author(s): Jian Gao
  • Organizer: 2018 Annual (73rd) Meeting, The Physical Society of Japan (JPS), 2018. March 22-25.
• [Presentation] Low-energy neutron detector with real-time neutron-gamma discrimination for radioactive beam experiments (PANDORA) (2017)
  • Author(s): Stuhl Laszlo
  • Organizer: International Conf. on Advances in Radioactive Isotope Science (ARIS2017), Keystone, USA, 2017.
  • Int'l Joint Research