title: Basic detection property of an array-type CdTe detector for BNCT-SPECT - Measurement and analysis of anti-coincidence events.
abstract: Our research group is now investigating a BNCT-SPECT system with cadmium tellurite (CdTe) detectors, which can obtain a three-dimensional image of the BNCT treatment effect by measuring the 478keV gamma-rays emitted from an excited state of the7Li nucleus generated by the10B(n,α) reaction. The BNCT-SPECT system is composed of a collimator and an array-type CdTe detector. In this study, we produced an array detector with two CdTe elements to test the basic detection property for anti-coincidence events. Our investigation confirmed that the detector offers an improved S/N ratio by the anti-coincidence detection. We also proposed an estimation method using the MCNP5 to analyze coincidence events in the detector.
authors.affiliation: Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, Yamada-oka 2-1 Suita, Osaka, 565-0871 Japan. Electronic address: manabe@qr.see.eng.osaka-u.ac.jp.
authors.forename: Masanobu
authors.initials: M
authors.lastname: Manabe
authors.affiliation: Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, Yamada-oka 2-1 Suita, Osaka, 565-0871 Japan.
authors.forename: Fuminobu
authors.initials: F
authors.lastname: Sato
authors.affiliation: Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, Yamada-oka 2-1 Suita, Osaka, 565-0871 Japan.
authors.forename: Isao
authors.initials: I
authors.lastname: Murata
keywords: (10)B(n,α)(7)Li; 478keV; Anti-coincidence detection; BNCT; CdTe detector; Gamma-ray; SPECT