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

Title: Soft x-ray seeding studies for the SLAC Linac Coherent Light Source II

Journal Article · · Physical Review Accelerators and Beams

We present the results from studies of soft x-ray seeding options for the LCLS–II x-ray free electron laser (FEL) at SLAC. The LCLS-II will use superconducting accelerator technology to produce x-ray pulses at up to 1 MHz repetition rate using 4 GeVelectron beams. If properly seeded, these pulses will be nearly fully coherent, and highly stable in photon energy, bandwidth, and intensity, thus enabling unique experiments with intense high-resolution soft x-rays. Given the expected electron beam parameters from start to end simulations and predicted FEL performance, our studies reveal echo enabled harmonic generation (EEHG) and soft x-ray self-seeding (SXRSS) as promising and complementary seeding methods. We find that SXRSS has the advantage of simplicity and will deliver 5-35 times higher spectral brightness than EEHG in the 1–2 nm range, but lacks some of the potential for phase-stable multipulse and multicolor FEL operations enabled by external laser seeding with EEHG.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-76SF00515; 2017-SLAC-100382; AC02-05CH11231
OSTI ID:
1573074
Alternate ID(s):
OSTI ID: 1596967; OSTI ID: 1597721
Journal Information:
Physical Review Accelerators and Beams, Journal Name: Physical Review Accelerators and Beams Vol. 22 Journal Issue: 11; ISSN 2469-9888
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

References (38)

Pulse Duration of Seeded Free-Electron Lasers journal June 2017
Using the Beam-Echo Effect for Generation of Short-Wavelength Radiation journal February 2009
Bunching phase and constraints on echo enabled harmonic generation journal May 2018
Double chirp-taper x-ray free-electron laser for attosecond pump-probe experiments journal May 2019
Coherent extreme ultraviolet free-electron laser with echo-enabled harmonic generation journal May 2019
Echo-enabled harmonics up to the 75th order from precisely tailored electron beams journal June 2016
Possible application of X-ray optical elements for reducing the spectral bandwidth of an X-ray SASE FEL journal August 1997
Fresh-slice multicolour X-ray free-electron lasers journal October 2016
Study of a noise degradation of amplification process in a multistage HGHG FEL journal February 2002
Generation of Phase-Locked Pulses from a Seeded Free-Electron Laser journal January 2016
Fluorescence‐detected wave packet interferometry: Time resolved molecular spectroscopy with sequences of femtosecond phase‐locked pulses journal August 1991
Minimum Spectral Bandwidth in Echo Seeded Free Electron Lasers journal March 2019
Beam debunching due to ISR-induced energy diffusion
  • Yampolsky, Nikolai; Carlsten, Bruce E.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 870 https://doi.org/10.1016/j.nima.2017.06.023
journal October 2017
GENESIS 1.3: a fully 3D time-dependent FEL simulation code journal June 1999
Study on the seed laser phase error multiplication in seeded free electron lasers
  • Wang, Guanglei; Feng, Chao; Zhang, Tong
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 737 https://doi.org/10.1016/j.nima.2013.11.020
journal February 2014
Chirped Seeded Free-Electron Lasers: Self-Standing Light Sources for Two-Color Pump-Probe Experiments journal February 2013
Damage thresholds for blaze diffraction gratings and grazing incidence optics at an X-ray free-electron laser journal January 2018
Seeding Experiments and Seeding Options for LCLS II text January 2018
Demonstration of self-seeding in a hard-X-ray free-electron laser journal August 2012
Experimental Demonstration of a Soft X-Ray Self-Seeded Free-Electron Laser journal February 2015
Two-stage seeded soft-X-ray free-electron laser journal October 2013
A single stage EEHG at SXFEL for narrow-bandwidth soft X-ray generation journal August 2016
Longitudinal impedance and wake from XFEL undulators. Impact on current-enhanced SASE schemes
  • Geloni, Gianluca; Saldin, Evgeni; Schneidmiller, Evgeni
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 583, Issue 2-3 https://doi.org/10.1016/j.nima.2007.09.019
journal December 2007
Coherent soft X-ray pulses from an echo-enabled harmonic generation free-electron laser journal May 2019
Optical Shaping of X-Ray Free-Electron Lasers journal June 2016
Experimental observations of seed growth and accompanying pedestal contamination in a self-seeded, soft x-ray free-electron laser journal August 2019
Bunching coefficients in echo-enabled harmonic generation journal July 2013
The FERMI seeded-FEL facility: Status and perspectives
  • Allaria, Enrico; Badano, Laura; Bencivenga, Filippo
  • PROCEEDINGS OF THE 12TH INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION – SRI2015, AIP Conference Proceedings https://doi.org/10.1063/1.4952785
conference January 2016
Laser phase errors in seeded free electron lasers journal March 2012
Echo-enabled harmonic generation free electron laser journal March 2009
Spectrotemporal Shaping of Seeded Free-Electron Laser Pulses journal September 2015
FERMI: Present and Future Challenges journal June 2017
The optical design of the soft x-ray self seeding at LCLS conference September 2013
High resolution simulation of beam dynamics in electron linacs for x-ray free electron lasers journal October 2009
X-ray absorption spectroscopy using a self-seeded soft X-ray free-electron laser journal January 2016
Towards jitter-free pump-probe measurements at seeded free electron laser facilities journal January 2014
Nonlinear wavepacket interferometry for polyatomic molecules journal December 2000
Slippage effect on energy modulation in seeded free-electron lasers with frequency chirped seed laser pulses journal June 2013

Similar Records

Spectrotemporal control of soft x-ray laser pulses
Journal Article · Thu Jun 11 00:00:00 EDT 2020 · Physical Review Accelerators and Beams · OSTI ID:1573074

Enhanced Self-Seeding with Ultrashort Electron Beams
Journal Article · Wed Jul 22 00:00:00 EDT 2020 · Physical Review Letters · OSTI ID:1573074

Statistical analysis of a self-seeded x-ray free-electron laser in the presence of the microbunching instability
Journal Article · Wed Jan 01 00:00:00 EST 2020 · Physical Review Accelerators and Beams · OSTI ID:1573074

Related Subjects