[7a-N107-1~8] 2.1 Radiation physics, Material development and characteristic evaluation

9:45 AM - 10:00 AM JST(12:45 AM - 1:00 AM UTC)

[7a-N107-1] Response evaluation of the optical fiber-based neutron detectors using a spherical Li glass scintillator

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

Keywords:

neutron detector,scintillator,Li glass

To establish neutron-measurement techniques for BNCT, we developed an optical fiber-based neutron detector with a Li-glass scintillator sphere on its tip. Spheres 200–500 µm in diameter were produced by aerodynamic polishing. Simulations using PHITS with an implemented Birks formula were compared with thermal-neutron irradiation experiments at UTR-KINKI and J-PARC; the responses matched, confirming the validity of simulations that account for wall effects and self-absorption.