Temperature Effects of CsI(Tl) Crystal Detector with APD Readout

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CHEN Ruo-Fu, FAN Rui-Rui, XU Hu-Shan, ZHAN Wen-Long, LI Song-Lin, XIAO Zhi-Gang, XIAO Guo-Qing, HU Zheng-Guo, HUANG Tian-Heng, ZHANG Xue-Heng, ZHENG Chuan, FU Fen, Temperature Effects of CsI(Tl) Crystal Detector with APD Readout[J]. Chinese Physics C, 2007, 31(8): 760-763.
CHEN Ruo-Fu, FAN Rui-Rui, XU Hu-Shan, ZHAN Wen-Long, LI Song-Lin, XIAO Zhi-Gang, XIAO Guo-Qing, HU Zheng-Guo, HUANG Tian-Heng, ZHANG Xue-Heng, ZHENG Chuan, FU Fen, Temperature Effects of CsI(Tl) Crystal Detector with APD Readout[J]. Chinese Physics C, 2007, 31(8): 760-763. shu
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Received: 2006-11-23
Revised: 2006-12-15
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Temperature Effects of CsI(Tl) Crystal Detector with APD Readout

    Corresponding author: CHEN Ruo-Fu,
  • Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Abstract: The temperature dependences of the light output of CsI(Tl) crystal grown at IMP and of the gain of the Hamamatsu S8664-1010 avalanche photodiode (APD) have been investigated systematically. The light output of the CsI(Tl) crystal increases with temperature by 0.67%/℃ in the region from -2℃ to 8℃, and by 0.33%/℃ in the region from 8℃ to 25℃, while the gain of the tested APD decreases by -3.68%/℃ (working voltage 400V) on average in the room temperature range. The best energy resolution 5.1% of the CsI(Tl) with APD was obtained for the 662keV γ ray from 137Cs radiation source.

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