Response of a high-resolution high-energy photon spectrometer (HHS) to monochromatic high-energy rays

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

The response function of a high-resolution high-energy photon spectrometer (HHS), consisting of a twin Ge detector and BGO (Bi $_{3}$ Ge $_{4}$ O $_{12}$ ) anti-coincidence shields, has been measured to 10.763 MeV monochromatic -rays generated via an $^{27}$ Al(p,) $^{28}$ Si reaction. The measured response functions both with and without anti-coincidence were compared with the calculations by Monte Carlo simulations, in which the pulse-height degradation effect associated with a surface channel has been taken into account. Excellent agreements were obtained between the measured response functions and the simulations by introducing two fitting parameters for the BGO shields.

Language	:	English
Journal	:	Nuclear Instruments and Methods in Physics Research A
Volume	:	554
Number	:	1-3
Pages	:	p.306 - 313
Publication Year/Month	:	2005/08
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Paper URL	:	https://doi.org/10.1016/j.nima.2005.07.065
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Registration No. : 08-2005-0371
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