Open AccessA simple method for mitigating error in the fixed‐offset of a double‐crystal monochromator
Author(s) -
Sterbinsky George E.,
Heald Steve M.
Publication year - 2021
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577521008626
Subject(s) - monochromator , monochromatic color , crystal (programming language) , offset (computer science) , optics , synchrotron , beam (structure) , physics , materials science , computer science , wavelength , programming language
In order to maintain a constant monochromatic synchrotron X‐ray beam height for all energies, the separation between the crystals of a double‐crystal monochromator is typically adjusted, via translation of the second crystal, while X‐ray energy is varied, via rotation of the crystal pair. The ability to accurately translate the second crystal requires precise knowledge of the separation between the two crystals and, when present, crystal miscuts. Here, a simple method for calibrating the crystal gap from measured variation in the X‐ray beam height that eliminates error in the fixed beam offset is provided.