Energy Calibration and MC Simulation of Broad Energy Planar HPGe Detector
YAN Yong-qiang1,3,SUN Sheng-tao3,WU Jin-jie3,JIN Shang-zhong1,2,ZHAO Rui3
1. School of Optical and Electronic Technology, China Jiliang University, Hangzhou, Zhejiang 310018, China
2. Key Laboratory of Zhejiang Province on Modern Measurement Technology and Instrument, Hangzhou, Zhejiang 310018, China
3. National Institute of Metrology, Beijing 100029, China
Abstract：In order to better serve environmental radiation monitoring, the planer HPGe spectrometer is calibrated by standard radioactive point sources 241Am, 133Ba, 60Co, 137Cs, 152Eu. And the detection efficiency, half height full width, channel address and other data under different energy are obtained respectively. After data processing, the function of energy-channel, function of FWHM-energy scale, relationship of energy and detection efficiency are obtained. At the same time, the energy resolution is 1.58keV (60Co, 1.33Mev). It is found that the MC model established by CT technology is more reliable and efficient. At the same time, the detection efficiency of the model is corrected by the upper dead layer and the bottom dead layer thickness in turn, and the relative error of the overall detection efficiency is within 5%, which is in good agreement with the actual experimental results.
严永强,孙圣涛,吴金杰,金尚忠,赵瑞. 宽能平面型HPGe探测器能量刻度及MC模拟[J]. 计量学报, 2021, 42(11): 1511-1516.
YAN Yong-qiang,SUN Sheng-tao,WU Jin-jie,JIN Shang-zhong,ZHAO Rui. Energy Calibration and MC Simulation of Broad Energy Planar HPGe Detector. Acta Metrologica Sinica, 2021, 42(11): 1511-1516.
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2021, Vol. 42 
