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Experimental validation of a newly developed neutron ambient dose H* detector in an accelerator-based BNCT field

Year: 2026
Type: article
Abstract: Out-of-field neutron dose evaluation is important for radiation protection during boron neutron capture therapy (BNCT). However, no commercial detector is available for measuring the neutron ambient dose equivalent H* outside the irradiation field. Establishing a reliable H* evaluation method is essential for the international standardization of BNCT. In this study, a prototype neutron detector was evaluated using a cyclotron-based epithermal neutron source (C-BENS). The ratio of the measured to calculated H*, based on ICRP Publication 116, ranged from 0.21–0.56 at lateral distances of 10–150 cm from the beam aperture center. This discrepancy is likely due to the difficulty in accurately reproducing the experimental geometry in the Monte Carlo simulation used to calculate the reference H*. These results provide a basis for improving H* evaluation methods and developing standardized radiation protection procedures for BNCT.
DOI: 10.35848/1347-4065/aebf3d
Authors: Liang Zhao, Hiroki Tanaka, Naonori Hu, Takushi Takata, Shinji Kawabata, Shunsuke Kurosawa, Akihiro Yamaji, Akihiko Masuda, Tetsuro MATSUMOTO
Institutions: Kyoto University, Institute for Integrated Radiation and Nuclear Science, Kyoto University, Osaka Medical and Pharmaceutical University, Nagoya University, Tohoku University, National Institute of Advanced Industrial Science and Technology
Language: English
Subfield: Radiation
Open Access status: hybrid
Estimated APC paid: $2,210
OpenAlex ID: W7225402180
FWCI:
Cites: 24
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Related to: 10