[2A01-06] Neutron Measurement

11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)

[2A05] Experimental Neutron Depth Distribution for Accelerator-Based BNCT

*Kosei Kamimura¹, Kyosuke Harada¹, Masashi Takada¹, Satoshi Nakamura², Kenji Shimada³, Masaru Nakamura³, Ryo Fujii³ (1. National Defense Academy, 2. National Cancer Center, 3. Cancer Intelligence Care Systems Inc.)

Keywords:

BNCT,gold activation method,aluminum

Neutron depth distribution is evaluated for quality assurances of neutron beam delivered to a patient in the boron neutron capture therapy. The neutron depth distributions were measured by combining aluminum neutron activation and radioactivity detection using an imaging plate. Two-dimensional thermal-neutron distributions in an acrylic block were measured, separately from gamma ray contribution to evaluate neutron thermalization in a body. Using our technique, alteration in depth distribution due to neutron target degradation can be evaluated, and also, opportunities of evaluating the neutron depth distribution can be increased for the QA of BNCT.