2011 Article Detectors Dosimetry ICNCT14 Physics

Study on optimization of multiionization-chamber system for BNCT

Applied Radiation and Isotopes, 2011

Authors:   T. Fujii,H. Tanaka,A. Maruhashi,K. Ono,Y. Sakurai,
Journal: Applied Radiation and Isotopes
Abstract: In order to monitor stability of doses from the four components such as thermal, epi-thermal, fast neutron and gamma-ray during BNCT irradiation, we are developing a multiionization-chamber system. This system is consisted of four kinds of ionization chamber, which have specific sensitivity for each component, respectively. Since a suitable structure for each chamber depends on the energy spectrum of the irradiation field, the optimization study of the chamber structures for the epi-thermal neutron beam of cyclotron-based epi-thermal neutron source (C-BENS) was performed by using a Monte Carlo simulation code “PHITS” and suitable chamber-structures were determined.