Performance of a plastic scintillation fiber dosimeter based on different photoelectric devices

作     者：Yue Yang Cui-Ping Yang Jie Xin Hai-Feng Chen Zhong-Xu Xing Wei-Wei Qu Liang Hu Xin-Jian Chen Ren-Sheng Wang Yue Yang;Cui-Ping Yang;Jie Xin;Hai-Feng Chen;Zhong-Xu Xing;Wei-Wei Qu;Liang Hu;Xin-Jian Chen;Ren-Sheng Wang

作者机构：State Key Laboratory of Radiation Medicine and ProtectionSchool of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China Renji HospitalAffiliated with the Shanghai Jiao Tong University School of MedicineShanghai 200127China Shanghai Ninth People’s HospitalAffiliated with the Shanghai Jiao Tong University School of MedicineShanghai 200127China Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education InstitutionsSuzhou 215123China 

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

年 卷 期：2021年第32卷第11期

页      面：25-31页

核心收录：

学科分类：0831[工学-生物医学工程（可授工学、理学、医学学位）] 08[工学] 0836[工学-生物工程] 0803[工学-光学工程] 

基　　金：supported by the China Postdoctoral Science Foundation(No.2017M621818) the National Key Research and Development Project(Nos.2017YFF0206205 and2016YFB0501303) the National Natural Science Foundation of China(Nos.51873137 and 11705123) the Project of the State Key Laboratory of Radiation Medicine and Protection Soochow University(No.GZN1201801) 

主　　题：Photoelectric device Plastic scintillation fiber dosimeter(PSFD) Current readout Dose response 

摘      要：The photoelectric device of a scintillation dosimeter converts photons produced by radiation into an electrical *** features directly determine the overall performance of the *** a plastic scintillation fiber dosimeter(PSFD)with a current readout mode,systematic studies of the stability and light-dose response were performed for the photomultiplier tube(PMT),silicon photomultiplier(SiPM),avalanche photodiode(APD),and photodiode(PD).The temperature stability,long-term stability,repeatability,signal-to-noise ratio(SNR),and current dose response of the PSFD with the abovementioned photoelectric devices were studied using a pulsed LED light source and the Small Animal Radiation Therapy *** exponential relationship between the dark/ne current and temperature was obtained for all the devices.I is shown that the APD is the most sensitive device to temperature,with a current dependence on temperature reaching 6.5%C^(-1)at room temperature,whereas for the other devices this dependence is always0:6%C^(-1).In terms of long-term stability,the net current of PD can change by up to 4%when working continuously for 8 h and 2%when working intermittently for 32 h,whereas for the other devices,the changes are all1%.For the dose response,the PMT and SiPM exhibit excellent linear responses and SNRs within the range of 0.1-60 Gy/min For the PSFD with a current readout mode,the performance of the PMT and SiPM is concluded to be better than that of the other devices in the *** particular,the SiPM,which has a compact size,low bias voltage,and antimagnetic interference,has great advantages for further applications.