Open AccessPerformance of the ESRF ID26 beamline reflective optics
Author(s) -
Signorato R.,
Solé V. A.,
Gauthier C.
Publication year - 1999
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049598013971
Subject(s) - beamline , optics , physics , computer science , beam (structure)
This paper presents the experimental results obtained during the commissioning of the X-ray mirrors installed on the ESRF beamline ID26. The ID26 spectrometer is dedicated to XAFS studies on ultra-diluted samples in the energy range 2.3 25 KeV using the excitation of X-ray fluorescence. The beamiine has been open to external users since January 1998 and all the main optical elements are fully commissioned. The reflective optics layout consists of three devices: a high heat load deflecting mirror installed in the white beam section and a classical KirkpatrickBaez couple installed downstream the monochromator. The focusing mirrors are based on the multi-segmented piezoelectric mirror technology and allow for a continuos and very precise adjustment of the curvature. Spot sizes as small as 170 x 7 (hor. x vert) lam 2 FWHM can be easily achieved, with a total flux well in excess of 10 ]3 photons s l when using Si 220 monochromator crystals.