Photon energy response optimization using few-channel spectroscopy dose method for Si-PIN photodetector applied in personal dose equivalent measurements

作     者：Ping Huang Shu-Qiong Li Run-Dong Yang Yun-Tian Sun Yong Yang Wu Gao Ping Huang;Shu-Qiong Li;Run-Dong Yang;Yun-Tian Sun;Yong Yang;Wu Gao

作者机构：National Institute of Measurement and Testing TechnologyChengdu 610021China Sichuan Radiation Technology Co.LtdChengdu 610021China Institute of MicroelectronicsSchool of Computer S&TNorthwestern Polytechnical UniversityXi’an 710072China 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2020年第31卷第4期

页      面：37-46页

核心收录：

学科分类：082704[工学-辐射防护及环境保护] 08[工学] 0827[工学-核科学与技术] 

基　　金：This work was partly supported by the National Key Scientific Instruments to Develop Dedicated Program(Nos.2013YQ090811 and 2016YFF0103800) the National Key Research and Development Program(No.2017YFF0211100) 

主　　题：Electronic personal dosimeter Si-PIN photodetector Personal dose equivalent Photon energy response Few-channel spectroscopy dose method 

摘      要：Si-PIN photodetectors having features such as low cost,small size,low weight,low voltage,and low power consumption are widely used as radiation detectors in electronic personal dosimeters(EPDs).The technical parameters of EPDs based on the Si-PIN photodetectors include photon energy response(PER),angular response,inherent error,and dose rate *** them,PER is a key parameter for evaluation of EPD measurement *** present,owing to the limitations of volume,power consumption,and EPD cost,the PER is usually corrected by a combination of single-channel counting techniques and filtering material ***,the above-mentioned methods have problems such as poor PER and low measurement *** solve such problems,in this study,a 1024-channel spectrometry system using a Si-PIN photodetector was developed and fullspectrum measurement in the reference radiation fields was conducted for radiation *** measurement results using the few-channel spectroscopy dose method showed that the PER could be controlled within±14%and±2%under the conditions of two and three energy intervals,respectively,with different channel *** PER measured at 0°angle of radiation incidence meets the-29%to+67%requirements of IEC 61526:***,the channel number and counts-to-dose conversion factors formed in the experiment can be integrated into an EPD.