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Proceedings Paper

X-ray optical simulations supporting advanced commissioning of the coherent hard x-ray beamline at NSLS-II
Author(s): L. Wiegart; M. Rakitin; A. Fluerasu; O. Chubar
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Paper Abstract

We present the application of fully- and partially-coherent synchrotron radiation wavefront propagation simulation functions, implemented in the "Synchrotron Radiation Workshop" computer code, to create a ‘virtual beamline’ mimicking the Coherent Hard X-ray scattering beamline at NSLS-II. The beamline simulation includes all optical beamline components, such as the insertion device, mirror with metrology data, slits, double crystal monochromator and refractive focusing elements (compound refractive lenses and kinoform lenses). A feature of this beamline is the exploitation of X-ray beam coherence, boosted by the low-emittance NSLS-II storage-ring, for techniques such as X-ray Photon Correlation Spectroscopy or Coherent Diffraction Imaging. The key performance parameters are the degree of Xray beam coherence and photon flux, and the trade-off between them needs to guide the beamline settings for specific experimental requirements. Simulations of key performance parameters are compared to measurements obtained during beamline commissioning, and include the spectral flux of the undulator source, the degree of transverse coherence as well as focal spot sizes.

Paper Details

Date Published: 23 August 2017
PDF: 12 pages
Proc. SPIE 10388, Advances in Computational Methods for X-Ray Optics IV, 103880N (23 August 2017); doi: 10.1117/12.2274403
Show Author Affiliations
L. Wiegart, Brookhaven National Lab. (United States)
M. Rakitin, Brookhaven National Lab. (United States)
A. Fluerasu, Brookhaven National Lab. (United States)
O. Chubar, Brookhaven National Lab. (United States)

Published in SPIE Proceedings Vol. 10388:
Advances in Computational Methods for X-Ray Optics IV
Oleg Chubar; Kawal Sawhney, Editor(s)

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