[18p-P01-1~43] 2 Ionizing Radiation (Poster)

[18p-P01-15] Evaluation of fast neutron measurement methods using polyethylene converter and BeO ceramics plates with PHITS

〇(M1)Leo Takahashi¹, Shinnosuke Matsumoto¹, Hiroki Tanaka², Genichiro Wakabayashi³, Mitsuki Kawane¹, Kiyomitsu Shinsho¹ (1.Tokyo Metropolitan Univ., 2.Kyoto univ., 3.Kindai univ.)

Keywords:

BeO,fast neutron,BNCT

Currently, gold and indium foil activation methods are used for QA of accelerator-based BNCT, but there is a need to investigate neutron distribution measurement methods to further improve QA accuracy. In this study, using the particle and heavy ion transport code system PHITS, we investigated a method to measure fast neutrons by installing a polyethylene converter in front of a BeO ceramics plates, which is almost unaffected by neutron and can be applied to distribution measurement, and measuring recoil protons produced by elastic scattering with fast neutrons.