The Response of the High-Resolution High-Energy Photon Spectrometer II

Osaka, Koji*; Utsunomiya, Hiroaki*; Akimune, Hidetoshi*; Osaki, Toshiro*; Igashira, Masayuki*; Furutaka, Kazuyoshi; Harada, Hideo

KEK Proceedings 2003-15, p.37 - 44, 2004/02

We report the response of the high-resolution high-energy photon spectrometer to 10.7 MeV rays produced in the Al-27(p,)Si-28 reaction with and without the Compton suppression mode. A tail of the full-energy peak and an enhancement of the low-energy component were investigated in detail with a Cs-137 standard source. EGS4 simulations of these phenomena were made assuming imperfect charge collection due to the effect of trapping/detrapping charge carriers by defects or trapping centers of a coaxial HPGe detector. A preliminary result is presented.