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Proceedings Paper

Hartmann wavefront sensor and adaptive x-ray optics developments for synchrotron applications
Author(s): Pascal Mercère; Mourad Idir; Guillaume Dovillaire; Xavier Levecq; Samuel Bucourt; Lionnel Escolano; Paul Sauvageot
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Paper Abstract

We report on the design and performances of a test prototype active X-ray mirror developed for the French national synchrotron radiation facility SOLEIL in collaboration with a French company ISP System. The active mirror uses 11 mechanical actuators: one actuator for the main curvature and 10 actuators along the mirror surface for correction of the residual shape errors. Its radius of curvature can be adjusted from infinity down to 50 m, with residual slope errors in correction less than 0.6 μrad RMS over a 300 mm useful length. A dedicated X-ray Hartmann wavefront sensor, based on YAG:Ce wavelength conversion to visible light, was developed for feedback control of the mirror. Closed-loop experiments were performed at 10 keV on the Metrology and Tests Beamline at SOLEIL.

Paper Details

Date Published: 29 September 2010
PDF: 11 pages
Proc. SPIE 7803, Adaptive X-Ray Optics, 780302 (29 September 2010); doi: 10.1117/12.860990
Show Author Affiliations
Pascal Mercère, Synchrotron SOLEIL (France)
Mourad Idir, Synchrotron SOLEIL (France)
Guillaume Dovillaire, Imagine Optic SA (France)
Xavier Levecq, Imagine Optic SA (France)
Samuel Bucourt, Imagine Optic SA (France)
Lionnel Escolano, ISP SYSTEM (France)
Paul Sauvageot, ISP SYSTEM (France)

Published in SPIE Proceedings Vol. 7803:
Adaptive X-Ray Optics
Ali M. Khounsary; Stephen L. O'Dell; Sergio R. Restaino, Editor(s)

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