Vol 21, No 6

Design and verification of the HXI collimator on the ASO-S mission

Deng-Yi Chen, Yi-Ming Hu, Tao Ma, Yang Su, Jian-Feng Yang, Jian-Ping Wang, Guang-Zhou Xu, Xian-Kai Jiang, Jian-Hua Guo, Yong-Qiang Zhang, Yan Zhang, Wei Chen, Jin Chang, Zhe Zhang


Abstract A space-borne hard X-ray collimator, comprising 91 pairs of grids, has been developed for the Hard X-ray Imager (HXI). The HXI is one of the three scientific instruments onboard the first Chinese solar mission: the Advanced Space-based Solar Observatory (ASO-S). The HXI collimator (HXI-C) is a spatial modulation X-ray telescope designed to observe hard X-rays emitted by energetic electrons in solar flares. This paper presents the detailed design of the HXI-C for the qualification model that will be inherited by the flight model. Series tests on the HXI-C qualification model are reported to verify the ability of the HXI-C to survive the launch and to operate normally in on-orbit environments. Furthermore, results of the X-ray beam test for the HXI-C are presented to indirectly identify the working performance of the HXI-C.


Keywords Solar observation — ASO-S — X-ray telescope — the collimator — verification

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