Abstract
Gamma-Ray Integrated Detectors (GRID) mission is a student project designed to use multiple gamma-ray detectors carried by nanosatellites (CubeSats), forming a full-time all-sky gamma-ray detection network that monitors the transient gamma-ray sky in the multi-messenger astronomy era. A compact CubeSat gamma-ray detector, including its hardware and firmware, was designed and implemented for the mission. The detector employs four \(\mathrm {Gd}_2\mathrm{Al}_2\mathrm{Ga}_3\mathrm{O}_{12}:\mathrm{Ce}\) (GAGG:Ce) scintillators coupled with four silicon photomultiplier (SiPM) arrays to achieve a high gamma-ray detection efficiency between \(\mathrm 10\ \mathrm{keV}\) and 2 MeV with low power and small dimensions. The first detector designed by the undergraduate student team onboard a commercial CubeSat was launched into a Sun-synchronous orbit on October 29, 2018. The detector was in a normal observation state and accumulated data for approximately one month after on-orbit functional and performance tests, which were conducted in 2019.
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All authors contributed to the study conception and design. System design, material preparation, data collection and analysis were performed by Jia-Xing Wen, Xu-Tao Zheng, Jian-Dong Yu, Yue-Peng Che, Dong-Xin Yang, Huai-Zhong Gao, Yi-Fei Jin, Xiang-Yun Long, Ji-Rong Cang and Ming Zeng. The first draft of the manuscript was written by Jia-Xing Wen, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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This work was supported by the Tsinghua University Initiative Scientific Research Program, the National Natural Science Foundation of China (Nos. 11633003, 12025301, and 11821303), and the National Key R&D Program of China (Nos. 2018YFA0404502 and 2016YFA040080X).
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Wen, JX., Zheng, XT., Yu, JD. et al. Compact CubeSat Gamma-ray detector for GRID mission. NUCL SCI TECH 32, 99 (2021). https://doi.org/10.1007/s41365-021-00937-4
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DOI: https://doi.org/10.1007/s41365-021-00937-4