硬X射线成像仪量能器测试系统的设计与实现
作者:
作者单位:

1. 中国科学院紫金山天文台暗物质与空间天文重点实验室 南京 210023;2. 中国科学技术大学天文与空间科学学院 合肥 230026

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P171;

基金项目:

国家自然科学基金项目(12227805)、中国科学院空间科学战略先导专项(XDA15320104)、中国科学院青年创新促进会项目(2022321、2021316)、 中国科学院科学仪器发展项目(GJJSTD20210009)资助


Design and Realization of the Calorimeter Test System for the Hard X-ray Imager
Author:
Affiliation:

1. Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023;2. School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026;

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    摘要:

    硬X射线成像仪(Hard X-ray Imager, HXI)是先进天基太阳天文台(Advanced Space-based Solar Observatory, ASO-S)的3大载荷之一, 其中量能器作为其重要组成部分, 承担着观测30--200keV能段的太阳硬X射线的任务. 在卫星发射之前, 需要开展大量的测试工作, 以确保HXI量能器的各项功能和性能满足设计需求. HXI量能器通道数众多, 内含99个溴化镧探测器, 分别由8块相同的前端电子学板控制. 除了对各个通道的性能进行测试外, 地检系统还需模拟量能器在轨面对不同太阳活动时的运行情况, 对量能器进行全面完备的测试. 此外, 地检系统还需足够稳定, 能满足量能器在单机测试、环境试验、热真空与振动等多个不同测试项目的长时间测试需求. 为此, 设计了地检板与上位机软件, 结合放射源、直流电源、高压模块等组成一套HXI量能器的地检系统, 对8块前端电子学板实现同步配置与管理, 能高效完成指令发送与数据接收, 满足量能器最大数据输出带宽400Mbps的需求. 利用该系统, 在地面完成了HXI量能器的功能、性能验证, 获得了量能器的线性、死时间、能量分辨率等各项性能指标, 为HXI量能器的在轨高性能运行提供了保障.

    Abstract:

    The Advanced Space-based Solar Observatory (ASO-S), as one of the second series scientific satellites in the space science pilot project, was proposed by the Purple Mountain Observatory of Chinese Academy of Sciences. ASO-S aims to observe and investigate the two solar eruptive phenomena, i.e., solar flares and coronal mass ejections, and their relationships with magnetic field. Hard X-ray Imager (HXI) is one of the payloads aboard ASO-S. As an important part of HXI, the calorimeter is responsible for measuring solar hard X-rays in the energy range of 30--200 keV. Before the launch of ASO-S, a ground test system was necessary to verify the function and performance of the HXI calorimeter. There are 99 lanthanum bromide detectors in the HXI calorimeter, each controlled by 8 identical front-end electronic boards. In addition to testing the performance of each channel, the ground test system also needs to simulate the operation of the calorimeter under different solar activities in orbit, conducting a comprehensive test. Moreover, the ground test system needs to be stable enough to meet the long-term testing needs of the calorimeter in different tests, including standalone testing, environmental experiments, thermal vacuum and vibration tests. According to the test requirements, a ground test board and a software in the host computer were designed, combined with radioactive sources, a DC (Direct Current) power supply, and a high-voltage module to form a ground test system for the HXI calorimeter. It can simultaneously configure and manage 8 front-end electronic boards, efficiently complete command sending and data receiving, and meet the maximum data output bandwidth of 400 Mbps of the calorimeter. The ground test system can fully meet the requirement of automatic control, status monitoring, data acquisition and data analysis for the HXI calorimeter. Using this ground test system, all function and performance tests for the HXI calorimeter were completed with the acquisition of the noise, the dead time, the energy resolution and other performance data. The ground test system provides strong guarantee for the high performance operation of the HXI calorimeter in orbit.

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陈娇龙,张永强,张岩,郭建华.硬X射线成像仪量能器测试系统的设计与实现[J].天文学报,2024,65(3):31. CHEN Jiao-long, ZHANG Yong-qiang, ZHANG Yan, GUO Jian-hua. Design and Realization of the Calorimeter Test System for the Hard X-ray Imager[J]. Acta Astronomica Sinica,2024,65(3):31.

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  • 收稿日期:2023-03-23
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  • 在线发布日期: 2024-05-31
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