Gas bearing slumping and figure correction of x-ray telescope mirror substrates
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Author(s)
Chalifoux, Brandon David
Zuo, Heng Elizabeth
Wright, Graham
Yao, Youwei
Heilmann, Ralf K
Schattenburg, Mark Lee
Date Issued
July 2016
Journal
Proceedings Volume 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray
Publisher
SPIE
Citation
Chalifoux, Brandon, et al. "Gas Bearing Slumping and Figure Correction of X-Ray Telescope Mirror Substrates." Proceedings Volume 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, 26 June - 1 July, 2016, Edinburgh, United Kingdom, edited by Jan-Willem A. den Herder et al., 2016, SPIE, p. 990522. © 2016 SPIE
Version
Final published version
Abstract
Figure correction of thin x-ray telescope mirrors may be critical for future missions that require high angular resolution and large collecting areas. One promising method of providing figure correction is to use stress generated via ion implantation. Since stress-based figure correction strategies cannot correct high spatial frequency errors, it is critical to obtain glass with only low spatial frequency error. One method is thermal gas bearing slumping, where glass is softened while floating on thin films of gas. This method avoids introducing mid- or high-spatial frequency errors by eliminating contact between the glass and mandrel. Together, these two methods form a promising approach to fabricating mirrors for a high angular resolution, large-area x-ray observatory. In this paper we report on progress in understanding gas bearing slumping, and advancing the technology to curved geometry. We also report on continued progress on advancing the ion implantation technology toward correcting flight-sized mirror substrates.
MIT Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Massachusetts Institute of Technology. Department of Mechanical Engineering
Massachusetts Institute of Technology. Plasma Science and Fusion Center
MIT Kavli Institute for Astrophysics and Space Research
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1117/12.2232500
