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Figure 4
Design of the double-crystal set-up. The precise and stable alignment of the Bragg condition (sub-µrad accuracy) is assured by the piezoelectric actuator (picomotor, Newfocus) on the long lever (right). An additional horizontal tilt stage (picomotor on top) is used for initial alignment of the set-up (beam height). The pair of polished and deeply etched crystals is shown semi-transparent to visualize the X-ray beam trajectory including three reflections.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 15| Part 4| May 2008| Pages 341-349
doi:10.1107/S0909049508008960
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