电子测量与仪器学报

郄晓雨,郭思明,郭锴悦,蒋政,余涛,吴金杰,任世伟.硅漂移探测器探测效率标定研究[J].电子测量与仪器学报,2022,36(10):49-54

硅漂移探测器探测效率标定研究

Research on detection efficiency calibration of silicon drift detectors

DOI：

英文关键词:monochromatic hard X-rays silicon drift detector detection efficiency detector efficiency calibration

基金项目:

作者	单位
郄晓雨	1. 河北科技大学理学院，2. 中国计量科学研究院
郭思明	2. 中国计量科学研究院
郭锴悦	2. 中国计量科学研究院，3. 中国计量大学光学与电子科技学院
蒋政	2. 中国计量科学研究院，4. 成都理工大学核技术与自动化工程学院
余涛	2. 中国计量科学研究院，4. 成都理工大学核技术与自动化工程学院
吴金杰	2. 中国计量科学研究院
任世伟	1. 河北科技大学理学院

Author	Institution
Qie Xiaoyu	1. School of Science, Hebei University of Science and Technology，2. National Institute of Metrology
Guo Siming	2. National Institute of Metrology
Guo Kaiyue	2. National Institute of Metrology，3. College of Optical and Electronic Technology, China Jiliang University
Jiang Zheng	2. National Institute of Metrology，4. The College of Nuclear Technology and Automation Engineering, Chengdu University of Technology
Yu Tao	2. National Institute of Metrology，4. The College of Nuclear Technology and Automation Engineering, Chengdu University of Technology
Wu Jinjie	2. National Institute of Metrology
Ren Shiwei	1. School of Science, Hebei University of Science and Technology

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中文摘要:

单能 X 射线标定装置是基于布拉格衍射原理产生单能 X 射线的装置,能量连续可调的单能 X 射线可以为探测器提供能量可选的详细标定实验。使用蒙特卡洛计算软件对两个不同型号的硅漂移探测器的探测效率进行模拟计算,得到 3 ~ 50 keV 能量段的探测效率,在单能 X 射线标定装置上完成了硅漂移探测器探测效率的标定实验,得到实验测量的探测效率曲线,并与模拟效率曲线对比。其中, PNDetector 公司的 MLC 型硅漂移探测器的实验结果与理论计算结果的误差最大值为 4. 23%@ 15 keV,KETEX 公司的 BEV 133 型硅漂移探测器的实验结果与理论计算结果的最大误差为-6. 88%@ 12 keV。结果表明,在 7~ 16 keV 能量段,两个探测器的实验标定结果与理论计算结果相符,在 8 keV 左右,实际探测效率大于 90%。研究成果验证了使用基于布拉格晶体衍射原理的单能 X 射线用于探测器标定的优越性,为国产化 X 射线探测器提供可靠的性能研究与测试平台。

英文摘要:

Monochromatic X-rays calibration facility is a device that generates monochromatic X-rays based on Bragg diffraction. The continuous adjustable monochromatic X-rays can provide detailed calibration experiments with optional energy for a detector. Monte Carlo calculation software is used to simulate the detection efficiency of two different types of silicon drift detectors, and the detection efficiency of the 3 ~ 50 keV energy band is obtained. The calibration experiment of the detection efficiency of the SDDs is completed on the monochromatic X-rays calibration facility, and the detection efficiency measured by the experiment is obtained and compared with the simulation efficiency. Moreover, the maximum error between the experimental results and the theoretical calculation results of MLC SDD is 4. 23%@ 15keV, and the maximum error between the experimental results and the theoretical calculation results of BEV 133 SDD is -6. 88%@ 12keV. The results show that the experimental calibration of the two detectors are consistent with the theoretical calculation results in the energy band of 7~ 16 keV, and the real detection efficiency is greater than 90% at 8 keV. The research results verify the superiority of using Bragg diffraction-based monochromatic X-rays for detector calibration, and also provide a reliable performance research and testing platform for domestic X-ray detectors.

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