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

Title: Demonstration of Model-Independent Control of the Longitudinal Phase Space of Electron Beams in the Linac-Coherent Light Source with Femtosecond Resolution

Abstract

The dynamics of intense electron bunches in free electron lasers and plasma wakefield accelerators are dominated by complex collective effects such as wakefields, space charge, coherent synchrotron radiation, and drift unpredictably with time, making it difficult to control and tune beam properties using model-based approaches. Here in this paper we report on a first of its kind combination of automatic, model-independent feedback with a neural network for control of the longitudinal phase space of relativistic electron beams with femtosecond resolution based only on transverse deflecting cavity measurements.

Authors:
ORCiD logo [1];  [2];  [2];  [2];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1468692
Alternate Identifier(s):
OSTI ID: 1461619; OSTI ID: 1479941
Report Number(s):
LA-UR-18-26467
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:  
AC02-76SF00515; 20180688ER; AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 121; Journal Issue: 4; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Scheinker, Alexander, Edelen, Auralee, Bohler, Dorian, Emma, Claudio, and Lutman, Alberto. Demonstration of Model-Independent Control of the Longitudinal Phase Space of Electron Beams in the Linac-Coherent Light Source with Femtosecond Resolution. United States: N. p., 2018. Web. doi:10.1103/physrevlett.121.044801.
Scheinker, Alexander, Edelen, Auralee, Bohler, Dorian, Emma, Claudio, & Lutman, Alberto. Demonstration of Model-Independent Control of the Longitudinal Phase Space of Electron Beams in the Linac-Coherent Light Source with Femtosecond Resolution. United States. doi:10.1103/physrevlett.121.044801.
Scheinker, Alexander, Edelen, Auralee, Bohler, Dorian, Emma, Claudio, and Lutman, Alberto. Wed . "Demonstration of Model-Independent Control of the Longitudinal Phase Space of Electron Beams in the Linac-Coherent Light Source with Femtosecond Resolution". United States. doi:10.1103/physrevlett.121.044801. https://www.osti.gov/servlets/purl/1468692.
@article{osti_1468692,
title = {Demonstration of Model-Independent Control of the Longitudinal Phase Space of Electron Beams in the Linac-Coherent Light Source with Femtosecond Resolution},
author = {Scheinker, Alexander and Edelen, Auralee and Bohler, Dorian and Emma, Claudio and Lutman, Alberto},
abstractNote = {The dynamics of intense electron bunches in free electron lasers and plasma wakefield accelerators are dominated by complex collective effects such as wakefields, space charge, coherent synchrotron radiation, and drift unpredictably with time, making it difficult to control and tune beam properties using model-based approaches. Here in this paper we report on a first of its kind combination of automatic, model-independent feedback with a neural network for control of the longitudinal phase space of relativistic electron beams with femtosecond resolution based only on transverse deflecting cavity measurements.},
doi = {10.1103/physrevlett.121.044801},
journal = {Physical Review Letters},
number = 4,
volume = 121,
place = {United States},
year = {2018},
month = {7}
}

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

Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

Figures / Tables:

FIG. 1 FIG. 1: Simple overview of LCLS showing the controlled parameters (in red) and XTCAV diagnostic location.

Save / Share:

Works referenced in this record:

Constrained extremum seeking stabilization of systems not affine in control: Extremum Seeking Stabilization of Systems Not Affine in Control
journal, July 2017

  • Scheinker, Alexander; Scheinker, David
  • International Journal of Robust and Nonlinear Control, Vol. 28, Issue 2
  • DOI: 10.1002/rnc.3886

Adaptive method for electron bunch profile prediction
journal, October 2015

  • Scheinker, Alexander; Gessner, Spencer
  • Physical Review Special Topics - Accelerators and Beams, Vol. 18, Issue 10
  • DOI: 10.1103/PhysRevSTAB.18.102801

Demonstration of self-seeding in a hard-X-ray free-electron laser
journal, August 2012


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

Few-femtosecond time-resolved measurements of X-ray free-electron lasers
journal, April 2014

  • Behrens, C.; Decker, F. -J.; Ding, Y.
  • Nature Communications, Vol. 5, Issue 1
  • DOI: 10.1038/ncomms4762

Plasma wakefield acceleration experiments at FACET II
journal, January 2018


Neural Networks for Modeling and Control of Particle Accelerators
journal, April 2016

  • Edelen, A. L.; Biedron, S. G.; Chase, B. E.
  • IEEE Transactions on Nuclear Science, Vol. 63, Issue 2
  • DOI: 10.1109/TNS.2016.2543203

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


Coherent-Radiation Spectroscopy of Few-Femtosecond Electron Bunches Using a Middle-Infrared Prism Spectrometer
journal, October 2013


Free-electron laser spectrum evaluation and automatic optimization
journal, November 2017

  • Bruchon, Niky; Fenu, Gianfranco; Gaio, Giulio
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 871
  • DOI: 10.1016/j.nima.2017.07.048

Measurements and Simulations of Ultralow Emittance and Ultrashort Electron Beams in the Linac Coherent Light Source
journal, June 2009


Experimental Demonstration of a Soft X-Ray Self-Seeded Free-Electron Laser
journal, February 2015


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