title: Study on optimization of multiionization-chamber system for BNCT.
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.
authors.affiliation: Kyoto University, Graduate School of Engineering, Yoshidahonmachi, Sakyo-ku, Kyoto, Japan. f.takaaki@ft7.ecs.kyoto-u.ac.jp
authors.forename: T
authors.initials: T
authors.lastname: Fujii
authors.forename: H
authors.initials: H
authors.lastname: Tanaka
authors.forename: A
authors.initials: A
authors.lastname: Maruhashi
authors.forename: K
authors.initials: K
authors.lastname: Ono
authors.forename: Y
authors.initials: Y
authors.lastname: Sakurai
mesh_terms: D016754:Boron Neutron Capture Therapy; D017357:Cyclotrons