Back to Search
Start Over
Beamline simulations using monochromators with high d-spacing crystals.
- Source :
- Journal of Synchrotron Radiation; Sep2022, Vol. 29 Issue 5, p1157-1166, 10p
- Publication Year :
- 2022
-
Abstract
- Monochromators for synchrotron radiation beamlines typically use perfect crystals for the hard X-ray regime and gratings for soft X-rays. There is an intermediate range, typically 1-3 keV (tender X-rays), which common perfect crystals have difficulties covering and gratings have low efficiency, although some less common crystals with high d-spacing could be suitable. To evaluate the suitability of these crystals for a particular beamline, it is useful to evaluate the crystals' performance using tools such as ray-tracing. However, simulations for double-crystal monochromators are only available for the most used crystals such as Si, Ge or diamond. Here, an upgrade of the SHADOW ray-tracing code and complementary tools in the OASYS suite are presented to simulate high dspacing crystals with arbitrary, and sometimes complex, structures such as beryl, YB<subscript>66</subscript>, muscovite, etc. Isotropic and anisotropic temperature factors are also considered. The YB<subscript>66</subscript> crystal with 1936 atomic sites in the unit cell is simulated, and its applicability for tender X-ray monochromators is discussed in the context of new low-emittance storage rings. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09090495
- Volume :
- 29
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Journal of Synchrotron Radiation
- Publication Type :
- Academic Journal
- Accession number :
- 160194236
- Full Text :
- https://doi.org/10.1107/S160057752200707X