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Proceedings Paper

Development of a computer-controlled polishing process for x-ray optics
Author(s): Gufran S. Khan; Mikhail Gubarev; William Arnold; Brian Ramsey
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Paper Abstract

Future X-ray observatory missions require grazing-incidence X-ray optics with angular resolution of < 5 arcsec half power diameter. For X-ray mirrors fabricated using replication processes, the achievable resolution depends ultimately on the quality of the polished replication mandrels. With an aim to fabricate better mirror shells, and also to reduce the cost/time of mandrel production, a computer-controlled machine is being developed for deterministic and localized polishing of mandrels. A key component in this is software that predicts the surface residual errors under a given set of operating parameters and lap configuration. Design considerations of the polishing lap are discussed and the effects of nonconformance of the lap and the mandrel are presented.

Paper Details

Date Published: 31 August 2009
PDF: 11 pages
Proc. SPIE 7437, Optics for EUV, X-Ray, and Gamma-Ray Astronomy IV, 743710 (31 August 2009); doi: 10.1117/12.837360
Show Author Affiliations
Gufran S. Khan, NASA Marshall Space Flight Ctr. (United States)
Mikhail Gubarev, NASA Marshall Space Flight Ctr. (United States)
William Arnold, NASA Marshall Space Flight Ctr. (United States)
Brian Ramsey, NASA Marshall Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 7437:
Optics for EUV, X-Ray, and Gamma-Ray Astronomy IV
Stephen L. O'Dell; Giovanni Pareschi, Editor(s)

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