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Proceedings Paper

Gas bearing slumping and figure correction of x-ray telescope mirror substrates
Author(s): Brandon Chalifoux; Heng Zuo; Graham Wright; Youwei Yao; Ralf K. Heilmann; Mark L. Schattenburg
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Paper 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.

Paper Details

Date Published: 11 July 2016
PDF: 12 pages
Proc. SPIE 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, 990522 (11 July 2016); doi: 10.1117/12.2232500
Show Author Affiliations
Brandon Chalifoux, Massachusetts Institute of Technology (United States)
Heng Zuo, Massachusetts Institute of Technology (United States)
Graham Wright, Massachusetts Institute of Technology (United States)
Youwei Yao, Massachusetts Institute of Technology (United States)
Ralf K. Heilmann, MIT Kavli Institute (United States)
Mark L. Schattenburg, MIT Kavli Institute (United States)

Published in SPIE Proceedings Vol. 9905:
Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray
Jan-Willem A. den Herder; Tadayuki Takahashi; Marshall Bautz, Editor(s)

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