A study on remotely-changeable moderators in Bonner sphere spectrometer for irradiation-field characterization in boron neutron capture therapy

Sadaaki Shiraishi; Takushi Takata; Hiroki Tanaka; Yoshinori Sakurai

doi:10.1016/j.apradiso.2020.109213

A study on remotely-changeable moderators in Bonner sphere spectrometer for irradiation-field characterization in boron neutron capture therapy

Appl Radiat Isot. 2020 Sep:163:109213. doi: 10.1016/j.apradiso.2020.109213. Epub 2020 May 11.

Authors

Sadaaki Shiraishi¹, Takushi Takata², Hiroki Tanaka², Yoshinori Sakurai³

Affiliations

¹ Graduate School of Engineering, Kyoto University, Kyoto, Japan.
² Institute for Integrated Radiation and Nuclear Science, Kyoto University, Osaka, Japan.
³ Institute for Integrated Radiation and Nuclear Science, Kyoto University, Osaka, Japan. Electronic address: yosakura@rri.kyoto-u.ac.jp.

PMID: 32561051
DOI: 10.1016/j.apradiso.2020.109213

Abstract

As part of the advancements in the characterization of the irradiation field for boron neutron capture therapy, we are developing a Bonner-sphere neutron energy spectrometer for which the liquid moderator is changed remotely. Simulations were performed to find the best combination of liquid moderators and composition of the Bonner spheres. The combination finally adopted was five-layered concentric acrylic spheres with two different liquid moderators and six optimal patterns for moderator injection.

Keywords: Bonner sphere; Boron neutron capture therapy; Characterization in irradiation field; Neutron energy spectrometer; Quality assurance.

MeSH terms

Boron Neutron Capture Therapy / methods*
Equipment Design
Humans
Spectrum Analysis / methods*