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

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

doi:10.1007/s41365-021-00965-0

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

NUCLEAR ELECTRONICS AND INSTRUMENTATION | Updated：2021-12-06

- Performance of a plastic scintillation fiber dosimeter based on different photoelectric devices
- Nuclear Science and Techniques Vol. 32, Issue 11, Article number: 120(2021)
- Affiliations：
  
  1.State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou 215123, China
  2.Renji Hospital, affiliated with the Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
  3.Shanghai Ninth People’s Hospital, affiliated with the Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
  4.Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou 215123, China
- Author bio：
  
  wwqu@suda.edu.cn
  huliang@suda.edu.cn
  wrs16@suda.edu.cn
- Funds：
- DOI：10.1007/s41365-021-00965-0
  CLC：
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Yue Yang, Cui-Ping Yang, Jie Xin, et al. Performance of a plastic scintillation fiber dosimeter based on different photoelectric devices. [J]. Nuclear Science and Techniques 32(11):120(2021)
DOI：

Yue Yang, Cui-Ping Yang, Jie Xin, et al. Performance of a plastic scintillation fiber dosimeter based on different photoelectric devices. [J]. Nuclear Science and Techniques 32(11):120(2021) DOI： 10.1007/s41365-021-00965-0.

摘要

Abstract

The photoelectric device of a scintillation dosimeter converts photons produced by radiation into an electrical signal. Its features directly determine the overall performance of the dosimeter. For 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 platform. An exponential relationship between the dark/net current and temperature was obtained for all the devices. It is shown that the APD is the most sensitive device to temperature, with a current dependence on temperature reaching 6.5%℃,-1, at room temperature, whereas for the other devices this dependence is always ,&,lt;0.6%℃,-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 all ,&,lt;1%. 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 study. In particular, the SiPM, which has a compact size, low bias voltage, and antimagnetic interference, has great advantages for further applications.

关键词

Keywords

Photoelectric devicePlastic scintillation fiber dosimeter (PSFD)Current readoutDose response

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