Energy Calibration and Detection Efficiency Simulation of CdTe Detector
YAO Xin-bo1,WU Jin-jie2,WANG Yu-long2,CHEN Cheng2,3,WANG Jia2,4,YANG Yang2
1. Zhejiang Institute of Metrology, Hangzhou, Zhejiang 310013, China
2. National Institute of Metrology,
Beijing 100029, China
3. Chengdu University of Technology, Chengdu, Sichuan 610059, China;
4. University of South China, Hengyang, Hunan 421000, China
Abstract：CdTe detector need to be scaled before it detects the single parallel photon source. Based on the energy calibration graph and energy resolution by standard point source, accurate internal structure by CT scanning and the results of physical model calculated by MCNP5 Monte Carlo code can be achived. The detector efficiency graph can be obtained on 1keV step from 20keV to 150keV energy range. The detection efficiency is very well at lower energy range and becomes decline at the energy of 27keV and 32keV due to outcome of X-ray escape summits. Then the detector efficiency increases and then decreases with the growth of energy.
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2017, Vol. 38 
