Optical design of the EPIC-IM crossed Dragone telescope
Optical design of the EPIC-IM crossed Dragone telescope
复制标题
EPIC-IM十字型Dragone望远镜的光学设计
DOI：
10.1117/12.857423
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
J. Zmuidzinas
中科院分区：
文献类型：
--
作者：
H. Tran;Brad L. Johnson;M. Dragovan;J. Bock;A. Aljabri;A. Amblard;D. Bauman;M. Betoule;T. Chui;L. Colombo;A. Cooray;D. Crumb;P. Day;C. Dickenson;D. Dowell;S. Golwala;K. Gorski;S. Hanany;W. Holmes;K. Irwin;B. Keating;C. Kuo;Adrian T. Lee;A. Lange;C. Lawrence;S. Meyer;N. Miller;Hien Nguyen;E. Pierpaoli;N. Ponthieu;J. Puget;J. Raab;P. Richards;C. Satter;M. Seiffert;M. Shimon;B. Williams;J. Zmuidzinas
膨胀宇宙学-中间任务实验探测器(EPIC-IM)是美国宇航局爱因斯坦膨胀探测器卫星的一个概念。EPIC-IM被设计用来表征宇宙微波背景的偏振特性，以寻找早期宇宙暴涨时期产生的引力波的B模偏振信号特征。EPIC-IM使用了一个拥有11,000个探测器的大型焦平面，运行在9个波长波段，提供比目前运行的普朗克卫星高30倍的灵敏度。光学设计基于宽视场1.4米交叉德拉贡望远镜，该望远镜不仅可以全面测量膨胀的B模偏振，还可以测量宇宙学极限的E模和透镜偏振信号，以及具有无与伦比的灵敏度和角分辨率的银河系偏振全天图。光学元件是测量这些极其微弱的偏振信号的关键，任何设计都必须满足对系统误差控制的严格要求。我们描述了EPIC-IM交叉Drago光学设计，它的偏振特性和远旁瓣响应。
The Experimental Probe of Inflationary Cosmology - Intermediate Mission (EPIC-IM) is a concept for the NASA Einstein Inflation Probe satellite. EPIC-IM is designed to characterize the polarization properties of the Cosmic Microwave Background to search for the B-mode polarization signal characteristic of gravitational waves generated during the epoch of Inflation in the early universe. EPIC-IM employs a large focal plane with 11,000 detectors operating in 9 wavelength bands to provide 30 times higher sensitivity than the currently operating Planck satellite. The optical design is based on a wide-field 1.4 m crossed-Dragone telescope, an aperture that allows not only comprehensive measurements of Inflationary B-mode polarization, but also measurements of the E-mode and lensing polarization signals to cosmological limits, as well as all-sky maps of Galactic polarization with unmatched sensitivity and angular resolution. The optics are critical to measuring these extremely faint polarization signals, and any design must meet demanding requirements on systematic error control. We describe the EPIC-IM crossed Dragone optical design, its polarization properties, and far-sidelobe response.