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Figure 1
Two-dimensional grating interferometry set-up for measuring the monochromator heat bump. The incident white synchrotron beam is monochromated by the Si-111 double-crystal monochromator. Owing to the high incident power, a heat bump develops on the first monochromator crystal. The grating interferometer measures the wavefront downstream. It consists of a beam-splitting phase grating G1 of period p1, which creates an interference pattern that is analyzed by the absorption grating G2 and a two-dimensional detector.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 20| Part 2| February 2013| Pages 300-305
doi:10.1107/S0909049513001817
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