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Design of the Permanent Magnet Diverter for Deflecting Electrons on Wide-Field X-Ray Telescope

文献类型：期刊论文

作者Wang, Lei2,3; Qin, Lang2,3; Cheng, Junsheng2,3; Zhang, Zili2,3; Wang, Yaohui2,3; Liu, Jianhua2,3; Hu, Xinning2,3; Wang, Qiuliang2,3; Zhang, Chen1,3; Zhao, Donghua1,3
刊名IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
出版日期2020-06-01
卷号30期号:4页码:5
关键词Magnetic fields Electron optics Satellites Kinetic energy Lenses Optical detectors Permanent magnet electron deflecting telescope eigenfrequency
ISSN号1051-8223
DOI10.1109/TASC.2020.2977284
英文摘要The Einstein Probe (EP) Satellite is a mission of Chinese Academy of Sciences, which is planned to be launched at the end of 2022. Its main work is to explore all-sky transient X-ray sources and constantly various X-ray sources. It will carry a Wide-field X-ray Telescope (WXT) and two Follow-up X-ray Telescopes (FXT). It is dedicated to investigate time-domain astronomy and to monitor the sky in the soft X-ray band. For the WXT, the electrons with kinetic energy below 1 MeV will pollute the background when they pass through the optic system. So, it is a key issue to remove the electrons with low energy out of the beam. A Permanent Magnet Diverter (PMD) is designed and fabricated for the WXT. Its main purpose is to separate the background electrons from the X-ray detecting system by re-directing the electrons. In order to minimize the magnetic flux leakage and the magnetic moment, a design of circular magnetic field is proposed by arranging the neodymium iron boron permanent magnet blocks appropriately, which can reduce the length of electron deflecting paths when they pass through the magnetic field region. The total weight is taken into considerations to optimize the structure of the PMD during design. Furthermore, the motion of electrons in the PMD and their entering paths towards the detector are simulated to improve the structure of the PMD. At the end, the eigenfrequency and mode shapes are analyzed to make sure the PMD could work normally on the satellite platform. The design and analysis of the PMD are presented detailed in the paper.
资助项目Beijing Natural Science Foundation[3184061] ; National Natural Science Foundation of China[51807191] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-JSC012]
WOS研究方向Engineering ; Physics
语种英语
WOS记录号WOS:000522367100001
出版者IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
资助机构Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS
源URL[http://ir.bao.ac.cn/handle/114a11/55252]  
专题中国科学院国家天文台
通讯作者Wang, Qiuliang
作者单位1.Chinese Acad Sci, Natl Astron Observ China, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Inst Elect Engn, Key Lab Appl Superconduct, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Lei,Qin, Lang,Cheng, Junsheng,et al. Design of the Permanent Magnet Diverter for Deflecting Electrons on Wide-Field X-Ray Telescope[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,2020,30(4):5.
APA Wang, Lei.,Qin, Lang.,Cheng, Junsheng.,Zhang, Zili.,Wang, Yaohui.,...&Zhao, Donghua.(2020).Design of the Permanent Magnet Diverter for Deflecting Electrons on Wide-Field X-Ray Telescope.IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,30(4),5.
MLA Wang, Lei,et al."Design of the Permanent Magnet Diverter for Deflecting Electrons on Wide-Field X-Ray Telescope".IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 30.4(2020):5.

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来源：国家天文台

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