Development of a computer-controlled polishing process for x-ray optics

Gufran S. Khan; Mikhail Gubarev; William Arnold; Brian Ramsey

doi:10.1117/12.837360

31 August 2009 Development of a computer-controlled polishing process for x-ray optics

Gufran S. Khan, Mikhail Gubarev, William Arnold, Brian Ramsey

Proceedings Volume 7437, Optics for EUV, X-Ray, and Gamma-Ray Astronomy IV; 743710 (2009) https://doi.org/10.1117/12.837360
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

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.

Citation Download Citation

Gufran S. Khan, Mikhail Gubarev, William Arnold, and Brian Ramsey "Development of a computer-controlled polishing process for x-ray optics", Proc. SPIE 7437, Optics for EUV, X-Ray, and Gamma-Ray Astronomy IV, 743710 (31 August 2009); https://doi.org/10.1117/12.837360

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