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Proceedings Paper

Design and simulations of a short optical baffle for the Lightweight Asymmetry and Magnetism Probe (LAMP)
Author(s): Yujie Xing; Zhanshan Wang; Wenbi Li; Jun Yu; Hua Feng
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Paper Abstract

The Lightweight Asymmetry and Magnetism Probe (LAMP) is a micro-satellite based mission concept for soft X-ray polarimetry at 250 eV with a large aperture but a short focal length. Due to the very low energy response of the gas pixel detector (GPD) used in LAMP, the stray light must be extremely attenuated. However, a long baffle is not favored for the micro-satellite with a limited geometry. In this paper, we propose a novel design having a short optical baffle but with high efficiency suppressing stray lights. For the optical aperture with a diameter of 700 mm used in LAMP, a short baffle of just 150 mm long can reduce the solar stray light by a factor better than 10-4 at the incidence angle larger than 60°, which is verified by simulations with TracePro ray-tracing software. This design meets the requirement for LAMP and the design concept should be helpful for other optical/UV/X-ray telescopes.

Paper Details

Date Published: 29 August 2017
PDF: 9 pages
Proc. SPIE 10399, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII, 103990K (29 August 2017); doi: 10.1117/12.2272077
Show Author Affiliations
Yujie Xing, Tongji Univ. (China)
Zhanshan Wang, Tongji Univ. (China)
Wenbi Li, Tongji Univ. (China)
Jun Yu, Tongji Univ (China)
Hua Feng, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 10399:
Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII
Stephen L. O'Dell; Giovanni Pareschi, Editor(s)

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