27 October 2016 Toward large-area sub-arcsecond x-ray telescopes II
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In order to advance significantly scientific objectives, future x-ray astronomy missions will likely call for x-ray telescopes with large aperture areas (≈ 3 m2) and fine angular resolution (≈ 12). Achieving such performance is programmatically and technologically challenging due to the mass and envelope constraints of space-borne telescopes and to the need for densely nested grazing-incidence optics. Such an x-ray telescope will require precision fabrication, alignment, mounting, and assembly of large areas (≈ 600 m2) of lightweight (≈ 2 kg/m2 areal density) high-quality mirrors, at an acceptable cost (≈ 1 M$/m2 of mirror surface area). This paper reviews relevant programmatic and technological issues, as well as possible approaches for addressing these issues-including direct fabrication of monocrystalline silicon mirrors, active (in-space adjustable) figure correction of replicated mirrors, static post-fabrication correction using ion implantation, differential erosion or deposition, and coating-stress manipulation of thin substrates.
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Stephen L. O'Dell, Ryan Allured, Andrew O. Ames, Michael P. Biskach, David M. Broadway, Ricardo J. Bruni, David N. Burrows, Jian Cao, Brandon D. Chalifoux, Kai-Wing Chan, Yip-Wah Chung, Vincenzo Cotroneo, Ronald F. Elsner, Jessica A. Gaskin, Mikhail V. Gubarev, Ralf K. Heilmann, Edward Hertz, Thomas N. Jackson, Kiranmayee Kilaru, Jeffrey J. Kolodziejczak, Ryan S. McClelland, Brian D. Ramsey, Paul B. Reid, Raul E. Riveros, Jacqueline M. Roche, Suzanne E. Romaine, Timo T. Saha, Mark L. Schattenburg, Daniel A. Schwartz, Eric D. Schwartz, Peter M. Solly, Susan Trolier-McKinstry, Melville P. Ulmer, Alexey Vikhlinin, Margeaux L. Wallace, Xiaoli Wang, David L. Windt, Youwei Yao, Shi Ye, William W. Zhang, Heng Zuo, "Toward large-area sub-arcsecond x-ray telescopes II", Proc. SPIE 9965, Adaptive X-Ray Optics IV, 996507 (27 October 2016); doi: 10.1117/12.2238247; https://doi.org/10.1117/12.2238247


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