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Proceedings Paper

R&D program on multisegmented piezoelectric bimorph mirrors at the ESRF--status report: II
Author(s): Riccardo Signorato
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Paper Abstract

The aim of this paper is to review the performances of the multi-segmented piezoelectric bimorph mirrors currently installed at the European Synchrotron Radiation Facility (ESRF). These innovative devices effectively combine the possibility of varying dynamically the average spherical bending radius (active mode) with the capability of acting locally on the reflecting surface shape (adaptive mode). A first generation consisting of two prototypes (450 and 750 mm long) was completely characterized in the ESRF metrology laboratory and the mirrors are installed and fully operational on the ID26 and ID32 beamlines since October 1997. A second generation prototype mirror (450 mm long) has been designed, manufactured, tested in the ESRF metrology laboratory, installed and commissioned at ID26 in early 1998. This last mirror exhibits sub-(mu) rad residual slope error rms in its central portion, 1 angstrom rms averaged microroughness and can routinely achieve a vertical beam size as small as 7 micrometer FWHM at a focal distance of almost 3 m.

Paper Details

Date Published: 16 November 1999
PDF: 10 pages
Proc. SPIE 3773, X-Ray Optics Design, Performance, and Applications, (16 November 1999); doi: 10.1117/12.370111
Show Author Affiliations
Riccardo Signorato, European Synchrotron Radiation Facility (Germany)

Published in SPIE Proceedings Vol. 3773:
X-Ray Optics Design, Performance, and Applications
Ali M. Khounsary; Andreas K. Freund; Tetsuya Ishikawa; George Srajer; Jonathan C. Lang, Editor(s)

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