Ion beam figuring of thin glass plates: achievements and perspectives
Date Issued
2016
Author(s)
Abstract
Different hot slumping techniques have been developed in the last decade to shape thin glass plates in Wolter-I configuration for high angular resolution x-ray telescopes. The required high quality surface characteristic, both in terms of figure error and of micro-roughness, is challenging and the best results achieved so far are compatible with an HEW of few arcseconds. In order to push forward the technology enabling x-ray optics with final HEW below 1 arcsec, we investigate the ion beam figuring as a deterministic technology which can correct the low frequency components of the residual error directly on thin glasses. In this paper we present the tests performed so far, giving a first assessment on the deterministic process definition. In particular, we report on the results achieved on flat samples of D263 and Eagle glass, focusing on the removal function characterization, the micro-roughness evolution and the plate shape variation.
Coverage
Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray
All editors
den Herder, Jan-Willem A.; Takahashi, Tadayuki; Bautz, Marshall
Series
Volume
9905
Start page
990578
Conferenece
Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray
Conferenece place
Edinburgh, United Kingdom
Conferenece date
26 June - 1 July 2016
Issn Identifier
0277-786X
Ads BibCode
2016SPIE.9905E..78C
Rights
open.access
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990578.pdf
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Pdf editoriale
Size
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Format
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