Research on the temperature characteristics of SiPM-based LaBr3(Ce) detectors

When a satellite-borne detector is being ground calibrated, a standard detector is required to determine the monochromatic X-ray beam energy and intensity. For this purpose, a SiPM-based LaBr 3 (Ce) detector has been developed. The environmental temperature change may substantially affect the perfor...

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Bibliographic Details
Published in:Journal of the Korean Physical Society 2023, Vol.82 (1), p.12-18
Main Authors: Yu, Tao, Guo, Siming, Wu, Jinjie, An, Zhenghua, Qie, Xiaoyu, Guo, Kaiyue
Format: Article
Language:English
Subjects:
Cesium 137
Cesium isotopes
Design optimization
Energy resolution
Gamma ray sources
Low temperature tests
Mathematical and Computational Physics
Original Paper - Particles and Nuclei
Particle and Nuclear Physics
Physics
Physics and Astronomy
Room temperature
Sensors
Temperature
Temperature effects
Test chambers
Theoretical
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Summary:When a satellite-borne detector is being ground calibrated, a standard detector is required to determine the monochromatic X-ray beam energy and intensity. For this purpose, a SiPM-based LaBr 3 (Ce) detector has been developed. The environmental temperature change may substantially affect the performance of the detector, thus affecting the accuracy of the ground calibration results. To study the effect of temperature change on the performance of the LaBr 3 (Ce) detector, the performance of the LaBr 3 (Ce) detector was tested with 241 Am and 137 Cs γ-ray sources in the high- and low-temperature test chambers. The results showed that within the range of – 20 to 40 °C, the energy resolution of the LaBr 3 (Ce) detector does not change by more than 1%, nor does the peak-to-total ratio of 241 Am and 137 Cs. The temperature change has little effect on the performance of the LaBr 3 (Ce) detector, which meets the requirements for use as a beam monitor. However, the peak location of the radioactive source varies significantly with temperature, and the difference with the peak location at room temperature is within 17%. To reduce the variation in the gain of the LaBr 3 (Ce) detector with temperature, it is necessary to optimize the compensation design of the temperature gain to ensure the stability of the detector gain at various temperatures.
ISSN:0374-4884
1976-8524
DOI:10.1007/s40042-022-00634-4