The Tests and Calibrations of the Hard X-ray Imager Aboard ASO-S

IF 2.7 3区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS Solar Physics Pub Date : 2024-10-31 DOI:10.1007/s11207-024-02392-x

Yang Su, Zhe Zhang, Wei Chen, Dengyi Chen, Fu Yu, Yiming Hu, Yan Zhang, Fanxiaoyu Xia, Changxue Chen, Zhentong Li, Xiankai Jiang, Yu Huang, Yongqiang Zhang, Wei Liu, Tao Ma, Dong Li, Wenhui Yu, Youping Li, Mingsheng Cai, Jianhua Guo, Yongyi Huang, Haoxiang Wang, Yaoming Liang, Miao Ma, Jianping Wang, Shanshan Zhu, Jinyou Tao, Jirui Yu, Jianfeng Yang, Jian Wu, Weiqun Gan

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Abstract

The Hard X-ray Imager (HXI) aboard the Advanced Space-based Solar Observatory (ASO-S) is an instrument designed to observe hard X-ray (HXR) spectra and images of solar flares. Having 91 subcollimators to modulate incident X-rays, HXI can obtain 91 modulation data and 45 visibilities to reconstruct images with a spatial resolution as high as \(\sim 3.1\) arcsec. HXI was launched on 9 October 2022 and powered up on 17 October 2022. After the on-orbit testing phase lasting for three months, HXI was ready for regular observations on 18 January 2023. With fine-tuning of the detectors and electronics, we were able to expand the energy range from \(\sim 30\) – 200 keV to \(\sim 10\) keV – 300 keV, which significantly raised the scientific values of the data and the number of detected flare events. This paper presents the changes and improvements of HXI instrument since 2019, the important ground tests, on-orbit tests, and calibration works. We also present the light curves, spectra, and reconstructed images of one flare observed by HXI on 6 January 2023.

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ASO-S 星载硬 X 射线成像仪的测试和校准

先进天基太阳观测站（ASO-S）上的硬 X 射线成像仪（HXI）是专门用于观测太阳耀斑的硬 X 射线（HXR）光谱和图像的仪器。HXI 有 91 个用于调制入射 X 射线的亚准直器，可以获得 91 个调制数据和 45 个可见度，从而重建空间分辨率高达 \(\sim 3.1\) 弧秒的图像。HXI 于 2022 年 10 月 9 日发射，2022 年 10 月 17 日开机。经过三个月的在轨测试阶段后，HXI 于 2023 年 1 月 18 日准备就绪，可以进行定期观测。通过对探测器和电子设备的微调，我们得以将能量范围从（模拟30）-200 keV扩大到（模拟10）keV-300 keV，这大大提高了数据的科学价值和探测到的耀斑事件的数量。本文介绍了2019年以来HXI仪器的变化和改进，以及重要的地面测试、在轨测试和校准工作。我们还介绍了HXI在2023年1月6日观测到的一次耀斑的光曲线、光谱和重建图像。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Solar Physics 地学天文-天文与天体物理

CiteScore

5.10

自引率

17.90%

发文量

146

审稿时长

1 months

期刊介绍： Solar Physics was founded in 1967 and is the principal journal for the publication of the results of fundamental research on the Sun. The journal treats all aspects of solar physics, ranging from the internal structure of the Sun and its evolution to the outer corona and solar wind in interplanetary space. Papers on solar-terrestrial physics and on stellar research are also published when their results have a direct bearing on our understanding of the Sun.