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arxiv: 2112.04772 · v1 · pith:IACG7KZDnew · submitted 2021-12-09 · ⚛️ physics.ins-det

Inflight performance of the GECAM Gamma-ray and Charge particle Detectors

X. Q. Li , X. Y. Wen , S. L. Xiong , K. Gong , D. L. Zhang , Z. H. An , Y. B. Xu , Y. Q. Liu
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C. Cai Z. Chang G. Chen C. Chen Y. Y. Du M. Gao R. Gao D. Y. Guo J. J. He D. J. Hou Y. G. Li C. Li C. Y. Li G. Li L. Li Q. X. Li X. F. Li M. S. Li X. H. Liang X. J. Liu F. J. Lu H. Lu X. Ma B. Meng W. X. Peng R. Qiao F. Shi L. M. Song X. L. Sun H. Wang H. Z. Wang J. Z. Wang P. Wang Y. S. Wang X. Wen S. Xiao Y. P. Xu S. Yang J. W. Yang Q. B. Yi Fan. Zhang S. N. Zhang C. Y. Zhang C. M. Zhang Fei Zhang K. Zhang P. Zhang X. Y. Zhao Y. Zhao S. J. Zheng X. Zhou
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keywords gamma-raygecam-bgecamdetectorsgravitationalgrbsmissionparticle
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The GECAM mission consists of two identical microsatellites (GECAM-A and GECAM-B). Each satellite is equipped with 25 gamma-ray detectors (GRD) and 8 charged particle detectors (CPD). The main scientific objective of the GECAM mission is to detect gamma-ray bursts (GRBs) associated with the gravitational wave events produced by the merging of binary compact stars. After the launch on Dec. 10, 2020 , we carried out a series of on orbit tests. This paper introduces the test results of the GECAM-B satellite. According to the in-flight performance, the energy band for gamma-ray detection of GECAM-B is from about 7 keV to 3.5 MeV. GECAM-B can achieve prompt localization of GRBs. For the first time, GECAM-B realized a quasi-real-time transmission of trigger information using Beidou-3 RDSS. Keywords GECAM, gamma-ray burst, gravitational wave, GRD, CPD

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