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Title: Numerical simulations of the hard X-ray pulse intensity distribution at the Linac Coherent Light Source

Journal Article · · Journal of Synchrotron Radiation (Online)
 [1];  [2];  [2];  [2];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
+ Show Author Affiliations

Numerical simulations of the current and future pulse intensity distributions at selected locations along the Far Experimental Hall, the hard X-ray section of the Linac Coherent Light Source (LCLS), are provided. Estimates are given for the pulse fluence, energy and size in and out of focus, taking into account effects due to the experimentally measured divergence of the X-ray beam, and measured figure errors of all X-ray optics in the beam path. Out-of-focus results are validated by comparison with experimental data. Previous work is expanded on, providing quantitatively correct predictions of the pulse intensity distribution. Numerical estimates in focus are particularly important given that the latter cannot be measured with direct imaging techniques due to detector damage. Finally, novel numerical estimates of improvements to the pulse intensity distribution expected as part of the on-going upgrade of the LCLS X-ray transport system are provided. We suggest how the new generation of X-ray optics to be installed would outperform the old one, satisfying the tight requirements imposed by X-ray free-electron laser facilities.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515; AC52-07NA27344
OSTI ID:
1373192
Alternate ID(s):
OSTI ID: 1420294
Report Number(s):
LLNL-JRNL-695561; JSYRES; PII: S1600577517007032
Journal Information:
Journal of Synchrotron Radiation (Online), Vol. 24, Issue 4; ISSN 1600-5775
Publisher:
International Union of CrystallographyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

References (12)

Predicting the coherent X-ray wavefront focal properties at the Linac Coherent Light Source (LCLS) X-ray free electron laser journal January 2009
Irreversible transformation of ferromagnetic ordered stripe domains in single-shot infrared-pump/resonant-x-ray-scattering-probe experiments journal February 2015
The Coherent X-ray Imaging (CXI) instrument at the Linac Coherent Light Source (LCLS) journal March 2010
Femtosecond X-ray protein nanocrystallography journal February 2011
Specification of glancing- and normal-incidence x-ray mirrors [also Erratum 34(11)3348(Nov1995)] journal February 1995
First lasing and operation of an ångstrom-wavelength free-electron laser journal August 2010
PROPER: an optical propagation library for IDL conference September 2007
Opto-mechanical design considerations for the Linac Coherent Light Source x-ray mirror system conference August 2008
Effect of slope errors on the performance of mirrors for x-ray free electron laser applications journal January 2015
GENESIS 1.3: a fully 3D time-dependent FEL simulation code journal June 1999
Morphology, microstructure, stress and damage properties of thin film coatings for the LCLS x-ray mirrors conference May 2009
Analysis of wavefront propagation using the Talbot effect journal January 2010

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Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
XFEL
LCLS
wavefront propagation simulations
X-ray optics
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS