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Proceedings Paper

Partially coherent wavefront propagation simulations for inelastic x-ray scattering beamline including crystal optics
Author(s): Alexey Suvorov; Yong Q. Cai; John P. Sutter; Oleg Chubar
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Paper Abstract

Up to now simulation of perfect crystal optics in the “Synchrotron Radiation Workshop” (SRW) wave-optics computer code was not available, thus hindering the accurate modelling of synchrotron radiation beamlines containing optical components with multiple-crystal arrangements, such as double-crystal monochromators and high-energy-resolution monochromators. A new module has been developed for SRW for calculating dynamical diffraction from a perfect crystal in the Bragg case. We demonstrate its successful application to the modelling of partially-coherent undulator radiation propagating through the Inelastic X-ray Scattering (IXS) beamline of the National Synchrotron Light Source II (NSLS-II) at Brookhaven National Laboratory. The IXS beamline contains a double-crystal and a multiple-crystal highenergy- resolution monochromator, as well as complex optics such as compound refractive lenses and Kirkpatrick-Baez mirrors for the X-ray beam transport and shaping, which makes it an excellent case for benchmarking the new functionalities of the updated SRW codes. As a photon-hungry experimental technique, this case study for the IXS beamline is particularly valuable as it provides an accurate evaluation of the photon flux at the sample position, using the most advanced simulation methods and taking into account parameters of the electron beam, details of undulator source, and the crystal optics.

Paper Details

Date Published: 5 September 2014
PDF: 8 pages
Proc. SPIE 9209, Advances in Computational Methods for X-Ray Optics III, 92090H (5 September 2014); doi: 10.1117/12.2061987
Show Author Affiliations
Alexey Suvorov, Brookhaven National Lab. (United States)
Yong Q. Cai, Brookhaven National Lab. (United States)
John P. Sutter, Diamond Light Source Ltd. (United Kingdom)
Oleg Chubar, Brookhaven National Lab. (United States)

Published in SPIE Proceedings Vol. 9209:
Advances in Computational Methods for X-Ray Optics III
Manuel Sanchez del Rio; Oleg Chubar, Editor(s)

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