Nuclear Engineering and Technology

  • 제50권5호
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  • Pages.801-805
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  • 2018
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Development of low-cost, compact, real-time, and wireless radiation monitoring system in underwater environment

  • 투고 : 2017.10.12
  • 심사 : 2018.03.25
  • 발행 : 2018.06.25
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초록

In this study, an underwater radiation detector was built using a GAGG(Ce) scintillator and silicon photomultiplier to establish an underwater radiation exposure monitoring system. The GAGG(Ce) scintillator is suitable for small radiation detectors as it strongly absorbs gamma rays and has a high light emission rate with no deliquescent properties. Additionally, the silicon photomultiplier is a light sensor with characteristics such as small size and low applied voltage. Further, a program and mobile app were developed to monitor the radiation coefficient values generated from the detector. According to the results of the evaluation of the characteristics of the underwater radiation monitoring system, when tested for its responsiveness to radiation intensity and reactivity, the system exhibited a coefficient of determination of at least 0.99 with respect to the radiation source distance. Additionally, when tested for its underwater environmental temperature dependence, the monitoring system exhibited an increase in the count rate up to a certain temperature because of the increasing dark current and a decrease in the count rate because of decreasing overvoltage. Extended studies based on the results of this study are expected to greatly contribute to immediate and continuing evaluation of the degree of radioactive contamination in underwater environments.

키워드

참고문헌

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피인용 문헌

  1. 방류수의 방사능 오염 측정을 위한 배열형 SiPM 기반 방사선 검출 센서 제작 vol.27, pp.4, 2018, https://doi.org/10.5369/jsst.2018.27.4.232
  2. Feasibility of underwater radiation detector using a silicon photomultiplier (SiPM) vol.15, pp.4, 2018, https://doi.org/10.1088/1748-0221/15/04/p04013
  3. Development of Microcontroller-Based System for Background Radiation Monitoring vol.20, pp.24, 2018, https://doi.org/10.3390/s20247322
  4. Gamma-Ray Sensor Using YAlO3(Ce) Single Crystal and CNT/PEEK with High Sensitivity and Stability under Harsh Underwater Conditions vol.21, pp.5, 2021, https://doi.org/10.3390/s21051606