Hard X-ray Imager (HXI) onboard the ASO-S mission

作者：Zhe Zhang, Dengyi Chen, Jian Wu, Jin Chang, Yi-Ming Hu, Yang Su, Yan Zhang, Jianping Wang, Yao‐Ming Liang, Tao Ma, Jianhua Guo, Mingsheng Cai, Yongqiang Zhang, Yong-Yi Huang, Xiao-Yan Peng, Zong-Bin Tang, Xuan Zhao, Honghe Zhou, Lianguo Wang, J. X. Song, Miao Ma, Guangzhou Xu, Jianfeng Yang, Di Lu, Yinghong He, Jinyou Tao, Xiaolong Ma, Baogang Lv, Yanping Bai, Caixia Cao, Yu Huang, Wei-Qun Gan · 发表于：Research in Astronomy and Astrophysics · 年份：2019 · DOI：10.1088/1674-4527/19/11/160 · 被引用次数：100 · 研究领域：Solar and Space Plasma Dynamics、Solar Radiation and Photovoltaics、Stellar, planetary, and galactic studies

Abstract Hard X-ray Imager (HXI) is one of the three scientific instruments onboard the Advanced Spacebased Solar Observatory (ASO-S) mission, which is proposed for the 25th solar maximum by the Chinese solar community. HXI is designed to investigate the non-thermal high-energy electrons accelerated in solar flares by providing images of solar flaring regions in the energy range from 30 keV to 200 keV. The imaging principle of HXI is based on spatially modulated Fourier synthesis and utilizes about 91 sets of bi-grid sub-collimators and corresponding LaBr 3 detectors to obtain Fourier components with a spatial resolution of about 3 arcsec and a time resolution better than 0.5 s. An engineering prototype has been developed and tested to verify the feasibility of design. In this paper, we present background, instrument design and the development and test status of the prototype.