Insight-HXMT on-orbit thermal control status and thermal deformation impact analysis  

作　　者：Ai-Mei Zhang Yi-Fan Zhang Jin-Yuan Liao Yu-Peng Xu Yu-Sa Wang Wen-Bo Luo Yu-Peng Zhou Zhi-Ying Qian Xiao-Bo Li Fang-Jun Lu Shuang-Nan Zhang Li-Ming Song Cong-Zhan Liu Fan Zhang Jian-Yin Nie Juan Wang Sheng Yang Tong Zhang Xiao-Jing Liu Rui-Jie Wang Xu-Fang Li Yi-Fei Zhang Zheng-Wei Li Xue-Feng Lu He Xu Di Wu 

机构地区：[1]Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China [2]University of Chinese Academy of Sciences,Chinese Academy of Sciences,Beijing 100049,China [3]Beijing Institute of Spacecraft System Engineering,CAST,Beijing 100094,China

出　　处：《Radiation Detection Technology and Methods》2023年第3期337-349,共13页辐射探测技术与方法（英文）

基　　金：This work was based on the data from Insight-HXMT mission,a project funded by the China National Space Administration(CNSA)and the Chinese Academy of Sciences(CAS);We gratefully acknowledge the support from the National Program on Key Research and Development Project(Grant No.2021YFA0718500)from the Ministry of Science and Technology of China(MOST);All authors appreciate the supports from the National Natural Science Foundation of China under Grants 12273043,U1838201,U1838202,U1938102,and U1938108;This work was partially supported by International Partnership Program of Chinese Academy of Sciences(Grant No.113111KYSB20190020);Appreciate Zeyu Song from IHEP for meticulous translation and revision.Appreciate Yongping Li from IHEP for helping with star sensor quaternion calculation.

摘　　要：Purpose The Hard X-ray Modulation Telescope is China’s first X-ray astronomy satellite launched on June 15,2017,dubbed Insight-HXMT.Active and passive thermal control measures are employed to keep devices at suitable temperatures.In this paper,we analyzed the on-orbit thermal monitoring data of the first 5 years and investigated the effect of thermal deformation on the point spread function(PSF)of the telescopes.Methods We examined the data of the on-orbit temperatures measured using 157 thermistors placed on the collimators,detectors and their support structures and compared the results with the thermal control requirements.The thermal deformation was evaluated by the relative orientation of the two star sensors installed on the main support structure.Its effect was estimated with evolution of the PSF obtained with calibration scanning observations of the Crab nebula.Conclusion The on-orbit temperatures met the thermal control requirements thus far,and the effect of thermal deformation on the PSF was negligible after the on-orbit pointing calibration.

关 键 词：X-ray Insight-HXMT Thermal control Temperature Star sensor data POINTING PSF 

分 类 号：TL7[核科学技术—辐射防护及环境保护]