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

页码：7510 / 7515

页数：6

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