skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Multivariate analysis of x-ray scattering using a stochastic source

Abstract

The normalization of scattered intensity by incident flux is a crucial step in analyzing data from stochastic x-ray free electron laser sources and is complicated by non-linearities traditionally attributed to detector saturation. Here we show that such non-linearities can also arise when the sample spectra are non-uniform within the monochromator bandwidth. A method for modeling and removing this non-linearity using multivariate regression with shot-by-shot x-ray photon energy as an independent variable is presented. In conclusion, this approach demonstrates the benefit of event building and will allow for a reconsideration of data which has proven challenging to normalize.

Authors:
 [1];  [2]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1493444
Alternate Identifier(s):
OSTI ID: 1489417
Grant/Contract Number:  
AC02-76SF00515; contract DE-AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Optics Letters
Additional Journal Information:
Journal Volume: 44; Journal Issue: 2; Journal ID: ISSN 0146-9592
Publisher:
Optical Society of America (OSA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Zohar, Sioan, and Turner, Joshua J. Multivariate analysis of x-ray scattering using a stochastic source. United States: N. p., 2019. Web. doi:10.1364/ol.44.000243.
Zohar, Sioan, & Turner, Joshua J. Multivariate analysis of x-ray scattering using a stochastic source. United States. doi:10.1364/ol.44.000243.
Zohar, Sioan, and Turner, Joshua J. Fri . "Multivariate analysis of x-ray scattering using a stochastic source". United States. doi:10.1364/ol.44.000243. https://www.osti.gov/servlets/purl/1493444.
@article{osti_1493444,
title = {Multivariate analysis of x-ray scattering using a stochastic source},
author = {Zohar, Sioan and Turner, Joshua J.},
abstractNote = {The normalization of scattered intensity by incident flux is a crucial step in analyzing data from stochastic x-ray free electron laser sources and is complicated by non-linearities traditionally attributed to detector saturation. Here we show that such non-linearities can also arise when the sample spectra are non-uniform within the monochromator bandwidth. A method for modeling and removing this non-linearity using multivariate regression with shot-by-shot x-ray photon energy as an independent variable is presented. In conclusion, this approach demonstrates the benefit of event building and will allow for a reconsideration of data which has proven challenging to normalize.},
doi = {10.1364/ol.44.000243},
journal = {Optics Letters},
number = 2,
volume = 44,
place = {United States},
year = {2019},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

Figure 1 Figure 1: X-rays with 70 fs pulse widths and 120 Hz repetition rates are generated by electrons accelerated into the FEL undulator via a SASE process. The x-ray photon energy, E, is estimated using a combination of calibrated electron BPMs and position-energy dispersion curves [19). The x-ray intensity, I1, exitingmore » the undulator is measured using the FEE gas detector. The variable line-spacing monochromator [20), together with the slits downstream from the monochromator, reduces the x-ray bandwidth from -10 to 2.25 eV centered at E0 • The x-ray intensity downstream from these slits, I0, is measured using the GMD [11,12]. X-ray scattering is measured in the end-station using an APD. Steering, focusing, and other optics and diagnostics are omitted for clarity.« less

Save / Share:

Works referenced in this record:

Linac Coherent Light Source soft x-ray materials science instrument optical design and monochromator commissioning
journal, September 2011

  • Heimann, Philip; Krupin, Oleg; Schlotter, William F.
  • Review of Scientific Instruments, Vol. 82, Issue 9
  • DOI: 10.1063/1.3633947

Linac Coherent Light Source: The first five years
journal, March 2016


The Soft X-ray Research instrument at the Linac Coherent Light Source
journal, April 2015

  • Dakovski, Georgi L.; Heimann, Philip; Holmes, Michael
  • Journal of Synchrotron Radiation, Vol. 22, Issue 3
  • DOI: 10.1107/S160057751500301X

Fresh-slice multicolour X-ray free-electron lasers
journal, October 2016

  • Lutman, Alberto A.; Maxwell, Timothy J.; MacArthur, James P.
  • Nature Photonics, Vol. 10, Issue 11
  • DOI: 10.1038/nphoton.2016.201

Photon beamlines and diagnostics at LCLS
journal, April 2011

  • Moeller, S.; Arthur, J.; Brachmann, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 635, Issue 1
  • DOI: 10.1016/j.nima.2010.10.125

Data systems for the Linac Coherent Light Source
journal, July 2016


First lasing and operation of an ångstrom-wavelength free-electron laser
journal, August 2010


De novo phasing with X-ray laser reveals mosquito larvicide BinAB structure
journal, September 2016

  • Colletier, Jacques-Philippe; Sawaya, Michael R.; Gingery, Mari
  • Nature, Vol. 539, Issue 7627
  • DOI: 10.1038/nature19825

Data systems for the Linac coherent light source
journal, January 2017


Development of a compact fast CCD camera and resonant soft x-ray scattering endstation for time-resolved pump-probe experiments
journal, July 2011

  • Doering, D.; Chuang, Y. -D.; Andresen, N.
  • Review of Scientific Instruments, Vol. 82, Issue 7
  • DOI: 10.1063/1.3609862

Linac Coherent Light Source data analysis using psana
journal, March 2016

  • Damiani, D.; Dubrovin, M.; Gaponenko, I.
  • Journal of Applied Crystallography, Vol. 49, Issue 2
  • DOI: 10.1107/S1600576716004349

Disentangling detector data in XFEL studies of temporally resolved solution state chemistry
journal, January 2015

  • van Driel, Tim Brandt; Kjær, Kasper Skov; Biasin, Elisa
  • Faraday Discussions, Vol. 177
  • DOI: 10.1039/C4FD00203B

The soft x-ray instrument for materials studies at the linac coherent light source x-ray free-electron laser
journal, April 2012

  • Schlotter, W. F.; Turner, J. J.; Rowen, M.
  • Review of Scientific Instruments, Vol. 83, Issue 4
  • DOI: 10.1063/1.3698294

Coherence Properties of Individual Femtosecond Pulses of an X-Ray Free-Electron Laser
journal, September 2011


Collective instabilities and high-gain regime in a free electron laser
journal, July 1984


Combining THz laser excitation with resonant soft X-ray scattering at the Linac Coherent Light Source
journal, April 2015

  • Turner, Joshua J.; Dakovski, Georgi L.; Hoffmann, Matthias C.
  • Journal of Synchrotron Radiation, Vol. 22, Issue 3
  • DOI: 10.1107/S1600577515005998

Correction of complex nonlinear signal response from a pixel array detector
journal, April 2015

  • van Driel, Tim Brandt; Herrmann, Sven; Carini, Gabriella
  • Journal of Synchrotron Radiation, Vol. 22, Issue 3
  • DOI: 10.1107/S1600577515005536

Nonlinear lattice dynamics as a basis for enhanced superconductivity in YBa2Cu3O6.5
journal, December 2014


Laser power meters as an X-ray power diagnostic for LCLS-II
journal, January 2018

  • Heimann, Philip; Moeller, Stefan; Carbajo, Sergio
  • Journal of Synchrotron Radiation, Vol. 25, Issue 1
  • DOI: 10.1107/S1600577517014096

Pulse energy measurement at the SXR instrument
journal, April 2015

  • Moeller, Stefan; Brown, Garth; Dakovski, Georgi
  • Journal of Synchrotron Radiation, Vol. 22, Issue 3
  • DOI: 10.1107/S1600577515006098

Measurements of continuum lowering in solid-density plasmas created from elements and compounds
journal, May 2016

  • Ciricosta, O.; Vinko, S. M.; Barbrel, B.
  • Nature Communications, Vol. 7, Issue 1
  • DOI: 10.1038/ncomms11713

Real-Time Observation of Surface Bond Breaking with an X-ray Laser
journal, March 2013


Nanosecond X-Ray Photon Correlation Spectroscopy on Magnetic Skyrmions
journal, August 2017


Absolute pulse energy measurements of soft x-rays at the Linac Coherent Light Source
journal, January 2014

  • Tiedtke, K.; Sorokin, A. A.; Jastrow, U.
  • Optics Express, Vol. 22, Issue 18
  • DOI: 10.1364/OE.22.021214

Femtosecond X-ray magnetic circular dichroism absorption spectroscopy at an X-ray free electron laser
journal, March 2016

  • Higley, Daniel J.; Hirsch, Konstantin; Dakovski, Georgi L.
  • Review of Scientific Instruments, Vol. 87, Issue 3
  • DOI: 10.1063/1.4944410

    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.