Measurements and simulations of the responses of the cluster Ge detectors to rays

線に対するクラスター型Ge検出器の応答関数測定とシミュレーション

原 かおる; 後神 進史*; 原田 秀郎   ; 廣瀬 健太郎  ; 木村 敦   ; 金 政浩*; 北谷 文人  ; 小泉 光生 ; 中村 詔司  ; 藤 暢輔   

Hara, Kaoru; Goko, Shinji*; Harada, Hideo; Hirose, Kentaro; Kimura, Atsushi; Kin, Tadahiro*; Kitatani, Fumito; Koizumi, Mitsuo; Nakamura, Shoji; Toh, Yosuke

For a pulse-height weighting technique, responses of two cluster Ge detectors with BGO anti-coincidence detectors have been measured at the Accurate Neutron-Nucleus Reaction Measurement Instrument (ANNRI) in the Japan Proton Accelerator Research Complex (J-PARC). Co and Cs standard sources were used for low-energy region (E 2 MeV). Prompt -rays emitted from the Cl(n,)Cl reactions were used for high-energy region (E 8 MeV). The measured spectra, peak efficiencies, and peak-to-total ratio were compared to simulations which were calculated by using the EGS5 code in the energy range 0.5-10 MeV. The response function will be applied to a data analysis in neutron capture reaction measurements at ANNRI.