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

作者：Dengyi Chen, Hu Yiming, Tao Ma, Yang Su, Jianfeng Yang, Jianping Wang, Guangzhou Xu, Xian-Kai Jiang, Jianhua Guo, Yongqiang Zhang, Yan Zhang, Wei Chen, Jin Chang, Zhe Zhang · 发表于：Research in Astronomy and Astrophysics · 年份：2021 · DOI：10.1088/1674-4527/21/6/136 · 被引用次数：14 · 研究领域：Solar and Space Plasma Dynamics、Ionosphere and magnetosphere dynamics、Stellar, planetary, and galactic studies

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.