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Figure 2
(a) Schematic diagram of the HRM: it consists of four Si(111) crystals cut asymmetrically with an angle α = 20°. Reflections 1 and 2 collimate the beam while 3 and 4 select the energy. (b) Comparison between the experimental rocking curve of crystal number 4 and the simulations. Efficiency of ∼13% is achieved. (c) Calculated phase space of the photons entering the HRM showing a well collimated beam with a large energy bandwidth. (d) As (c) but for the photons exiting the HRM. Here the bandwidth is reduced by a factor of ten but the divergence increases.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 27| Part 2| March 2020| Pages 538-544
https://doi.org/10.1107/S1600577519017119
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