Optical design and coating optimization of the Wolter-I X-ray telescope

被引：0
|
作者：
Geng, Yujia [1 ,2 ]
Yang, Yanji [3 ]
Zheng, Renzhou [1 ]
Li, Yue [1 ]
Yan, Yongqing [1 ]
Yang, Bingqing [1 ]
Zhou, Qingyong [4 ]
Qiang, Pengfei [1 ]
Sheng, Lizhi [1 ]
机构：
[1] Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 71000, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
[4] State Key Lab Geoinformat Engn, Xian, Peoples R China
来源：
APPLIED OPTICS | 2024年 / 63卷 / 28期
基金：
中国国家自然科学基金;
关键词：
PERFORMANCE; MIRRORS;
D O I：
10.1364/AO.533818
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The optical design of the nested paraboloid and hyperboloid Wolter I X-ray telescope of the eXTP satellite in the 1-8 keV band was systematically studied. The recursive relationship of nested structures is derived, and an analysis is conducted on the influence of initial parameters on performance. Considering the requirements of X-ray astronomical observation in China, we propose the initial structure of the model and design seven groups of Au/C/Ni non-periodic dual-layer coatings between the innermost and outermost layers of the mirror. The effective area, half-power diameter, and stray light were calculated in the simulation. The results show that the effective area can reach 1000 cm(2) at 2 keV, the effective area can reach 890 cm(2) at 6 keV without hub obscuration, the half-power diameter is 10 arcsec, and the proportion of stray light is 4.2%. (c) 2024 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI)training, and similar technologies, are reserved.
引用
收藏
页码：7510 / 7515
页数：6
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