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Design and testing of the structure of the eXTP optics
Song, Z. Y.1; Ma, J.1; Wang, J.1; Zhang, A. M.1; Wang, Y. S.1; Yang, Y. J.1; Jiang, W. C.1; Chen, Y.1; Yu, K.1; Yang, S.1; Xu, Y. P.1; He, H. L.1; Lu, F. J.1; Zhang, S. N.1; Basso, S.2; Civitani, M.2; Pareschi, G.2; Sironi, G.2; Spiga, D.2; Cotroneo, V2; Tagliaferri, G.2; Sheng, L. Z.3; Yan, Y. Q.3; Qiang, P. F.3; Zhao, B. S.3
2022
会议名称Conference on Space Telescopes and Instrumentation - Ultraviolet to Gamma Ray Part of SPIE Astronomical Telescopes and Instrumentation Conference
会议录名称SPACE TELESCOPES AND INSTRUMENTATION 2022: ULTRAVIOLET TO GAMMA RAY
卷号12181
会议日期2022-07-17
会议地点Montreal, CANADA
出版者SPIE-INT SOC OPTICAL ENGINEERING
产权排序3
摘要

The abbreviation eXTP represents the enhanced X-ray timing and polarimetry, which is a key science mission initiated by the Chinese scientists, designed to study the state of matter under extreme conditions of density, gravity and magnetism [1]. Various payloads would be on board of the satellite. The SFA, namely the Spectroscopy Focusing Array, consisting of 9 identical X-ray telescopes working in the energy range of 0.5-10 keV, will be the focus here [1]. SFA has a field-ofview of 12 arcmin for each and a collecting area of 900 cm(2) and 550 cm(2) for each at 2 keV and 6 keV respectively [1]. This paper starts with a brief introduction of the general optics, and then goes across some important design aspects. It covers contents from the structural and thermal designs to the CAE analyses as well as the current status. The large diameter and huge focal length of the optics will definitely bring big issues to the robustness of the carrying structure under the severe conditions given by the launcher. According to the current design, the mirror assembly will have 3 feet and 24 spokes. Vibration tests were already performed on a few prototypes by IHEP, and a preliminary evaluation on the feasibility of the design has been achieved. It clearly stated that the current design with only a single spider can probably survive the vibration tests assuming a compromised test condition somewhere. CAE models were adjusted thereafter to match the test results, which could be used for further assessments in a near future. Of course, there are always uncertainties associated with our arguments. More detailed prototypes with mechanically fully representative shells were still under design. Hopefully, highly reliable results could be retrieved soon.

关键词X-ray eXTP Structure design Testing Analysis
作者部门光电子学研究室
DOI10.1117/12.2629781
收录类别CPCI
ISBN号978-1-5106-5344-3; 978-1-5106-5343-6
语种英语
ISSN号0277-786X;1996-756X
WOS记录号WOS:000865607100149
引用统计
文献类型会议论文
条目标识符http://ir.opt.ac.cn/handle/181661/96224
专题光电子学研究室
作者单位1.Chinese Acad Sci, Inst High Energy Phys, IHEP, 19B Yuquan Rd, Beijing 100049, Peoples R China
2.INAF Brera Astron Observ, Via E Bianchi 46, I-23807 Merate, Italy
3.Chinese Acad Sci, Xian Inst Opt & Precis Mech, XIOPM, 17 Xinxi Rd, Xian 710119, Peoples R China
推荐引用方式
GB/T 7714
Song, Z. Y.,Ma, J.,Wang, J.,et al. Design and testing of the structure of the eXTP optics[C]:SPIE-INT SOC OPTICAL ENGINEERING,2022.
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