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Figure 1
Experimental set-up and results of the sapphire crystal quality characterization. Top: experimental set-up at ID18 with the high-heat-load monochromator (HHLM), high-resolution monochromator (HRM) and Si avalanche photodiode (APD). Bottom right: map of the energy width for the reflection (0 1 [\bar{1}] 50) at different points on the sapphire crystal. The dashed ellipses denote the parts of the crystal which were used for monochromatization. Bottom left: energy dependence of the reflectivity for the spots on the crystal indicated by the arrows; the red line is the theoretical reflectivity calculated for an ideal HRM and sapphire crystal.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 18| Part 5| September 2011| Pages 802-810
https://doi.org/10.1107/S090904951102485X
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