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

Authors :: Li, X. Q.
Wen, X. Y.
Xiong, S. L.
Gong, K.
Zhang, D. L.
An, Z. H.
Xu, Y. B.
Liu, Y. Q.
Cai, C.
Chang, Z.
Chen, G.
Chen, C.
Du, Y. Y.
Gao, M.
Gao, R.
Guo, D. Y.
He, J. J.
Hou, D. J.
Li, Y. G.
Li, C.
Li, C. Y.
Li, G.
Li, L.
Li, Q. X.
Li, X. F.
Li, M. S.
Liang, X. H.
Liu, X. J.
Lu, F. J.
Lu, H.
Ma, X.
Meng, B.
Peng, W. X.
Qiao, R.
Shi, F.
Song, L. M.
Sun, X. L.
Wang, H.
Wang, H. Z.
Wang, J. Z.
Wang, P.
Wang, Y. S.
Wen, X.
Xiao, S.
Xu, Y. P.
Yang, S.
Yang, J. W.
Yi, Q. B.
Zhang, Fan.
Zhang, S. N.
Zhang, C. Y.
Zhang, C. M.
Zhang, Fei
Zhang, K.
Zhang, P.
Zhao, X. Y.
Zhao, Y.
Zheng, S. J.
Zhou, X.
Publication Year :: 2021
Abstract: 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<br />Comment: 16 pages, 8 figures