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Figure 3
Images of the focal spot calculated by ray-tracing for the ESRF-1 (left column) and EBS (right column). The source follows Gaussian distributions with parameters in Table 5[link]. (a) Simulations using the ideal reflectors (cylindrical for ML, elliptical for the KB mirrors) without slope errors. (b) Images calculated using the hybrid method (ray-tracing plus coherent diffraction) with ideal reflectors with no slope errors. Focal spot degradation due to the diffraction arising from the cropping of the beam by KB mirrors can be seen. (c) Simulations using the hybrid method including slope errors from the real mirror profiles measured at the ESRF metrology laboratory (see Appendix A[link]). The focal beam dimensions (FWHM of the histograms) are given for each plot.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 26| Part 6| November 2019| Pages 1887-1901
https://doi.org/10.1107/S160057751901213X
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