[2H16-21] Neutron Measurement and BNCT

[2H18] Real-Time Neutron Measurement at Boron Neutron Capture Therapy Field using Thin Silicon Sensor

*Masashi Takada¹, Tetsurou Ueda¹, Satoru Endo², Hiroki Tanaka⁵, Horiguchi Tetsuo⁶, Tetsurou Matsumoto³, Akihiko Masuda³, Tomoya Nunomiya⁴, Fumihiro Kimura¹, Tsuyoshi Kajimoto² (1. National Defense Academy of Japan, 2. Hiroshima University, 3. National Institute of Advanced Industrial Science and Technology, 4. Fuji Electric Co. Ltd, 5. Kyoto University Research Reactor Institute , 6. Kindai University Atomic Energy Research Institute)

Keywords:Neutron Measurement, Silicon Sensor, Boron Neutron Capture Therapy, Reactor, Real-time Measurement, Monte Carlo Simulation, Thermal Neutron, Gamma ray, nuclear reaction

Thin silicon sensor has an advantage of low sensitivity to gamma rays. We performed test experiments at UTR-KINKI and Kyoto University Research Reactor to study the possibility of measuring neutrons at the boron neutron capture theraphy fields irradiating intense gamma rays and neutrons to the silicon sensor. We found that we can measure neutrons using the thin silicon sensor under these radiation fields.