[19p-D61-1~18] 2.1 Detection Devices

2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)

[19p-D61-7] Evaluation of Self-Absorption in the Li Glass Scintillator Used in Optical-fiber-based Neutron Detectors

〇(D)Yuya Oshima¹, Yutaro Saito¹, Kenichi Watanabe¹ (1.Kyushu Univ.)

Keywords:

neutron detector,scintillator,Li glass

To evaluate the neutron dose in BNCT, our research group is developing an optical-fiber-based neutron detector using a Li glass scintillator with a short emission decay time. We have proposed two methods to control the shape of the scintillator: the transparent composite method and the aerodynamic polishing method. Using simulations with PHITS, we confirmed the effect of self-absorption of neutrons in the scintillator.