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Figure 5
The weighted slope errors of the crystal surface (a,b) and the corresponding angular distortions of the reflected monochromatic beam (c,d) for the previous ESRF-1 (a,c) and the new EBS (b,d) machines in meridional and sagittal planes. All values are given as FWHMs. The calculated slope errors of the crystal surface are weighted by the spatial distribution of the central cone of monochromatic 14.412 keV X-rays. The angular distortions of the reflected beam are calculated from the weighted slope errors using equations (1)[link] and (2)[link] (symbols) and by ray tracing using the simulated height profiles of the crystal surface (lines). For a high-heat-load monochromator with horizontal scattering plane, the calculated sagittal angular distortions correspond to the parameters of the reflected beam in the vertical plane (see text).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 28| Part 1| January 2021| Pages 91-103
https://doi.org/10.1107/S1600577520014009
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