
Proceedings Paper
Pushing the limits: latest developments in angle metrology for the inspection of ultra-precise synchrotron opticsFormat | Member Price | Non-Member Price |
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Paper Abstract
The requirements on the quality of ultra-precise X-ray optical components for application in the Synchrotron Radiation
(SR) community are increasing continually and strongly depend on the quality of the metrology devices available to
measure such optics. To meet the upcoming accuracy goal of 50 nrad rms for slope measuring profilers, a dedicated
project, SIB58 Angles, consisting of 16 worldwide partners and supported by the European Metrology Research
Programme (EMRP) was started in Sep 2013. The project covers investigations on autocollimators under extremely
challenging measuring conditions, ray-tracing models, 2D autocollimator calibration (for the first time worldwide),
determination of error sources in angle encoders providing traceability by ‘sub-division of 2π rad’ with nrad uncertainty,
angle generation by 'ratio of two lengths' in nrad level, and on the development of portable precise Small Angle
Generators (SAGs) for regular in-situ checks of autocollimators’ performance. Highlights from the project will be
reported in the paper and the community of metrology for X-Ray and EUV Optics will be informed about its progress
and the latest work in angle metrology.
Paper Details
Date Published: 5 September 2014
PDF: 15 pages
Proc. SPIE 9206, Advances in Metrology for X-Ray and EUV Optics V, 92060F (5 September 2014); doi: 10.1117/12.2060953
Published in SPIE Proceedings Vol. 9206:
Advances in Metrology for X-Ray and EUV Optics V
Lahsen Assoufid; Haruhiko Ohashi; Anand Krishna Asundi, Editor(s)
PDF: 15 pages
Proc. SPIE 9206, Advances in Metrology for X-Ray and EUV Optics V, 92060F (5 September 2014); doi: 10.1117/12.2060953
Show Author Affiliations
Tanfer Yandayan, TÜBITAK UME (Turkey)
Ralf D. Geckeler, Physikalisch-Technische Bundesanstalt (Germany)
Ralf D. Geckeler, Physikalisch-Technische Bundesanstalt (Germany)
Frank Siewert, Helmholtz Zentrum Berlin, Institut für Nanometer Optik und Technologie (Germany)
Published in SPIE Proceedings Vol. 9206:
Advances in Metrology for X-Ray and EUV Optics V
Lahsen Assoufid; Haruhiko Ohashi; Anand Krishna Asundi, Editor(s)
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