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

Abstract

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.

Authors:
; ; ORCiD logo; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1573074
Alternate Identifier(s):
OSTI ID: 1596967; OSTI ID: 1597721
Grant/Contract Number:  
AC02-76SF00515; 2017-SLAC-100382; AC02-05CH11231
Resource Type:
Published Article
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Name: Physical Review Accelerators and Beams Journal Volume: 22 Journal Issue: 11; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Hemsing, E., Marcus, G., Fawley, W. M., Schoenlein, R. W., Coffee, R., Dakovski, G., Hastings, J., Huang, Z., Ratner, D., Raubenheimer, T., and Penn, G. Soft x-ray seeding studies for the SLAC Linac Coherent Light Source II. United States: N. p., 2019. Web. doi:10.1103/PhysRevAccelBeams.22.110701.
Hemsing, E., Marcus, G., Fawley, W. M., Schoenlein, R. W., Coffee, R., Dakovski, G., Hastings, J., Huang, Z., Ratner, D., Raubenheimer, T., & Penn, G. Soft x-ray seeding studies for the SLAC Linac Coherent Light Source II. United States. doi:10.1103/PhysRevAccelBeams.22.110701.
Hemsing, E., Marcus, G., Fawley, W. M., Schoenlein, R. W., Coffee, R., Dakovski, G., Hastings, J., Huang, Z., Ratner, D., Raubenheimer, T., and Penn, G. Mon . "Soft x-ray seeding studies for the SLAC Linac Coherent Light Source II". United States. doi:10.1103/PhysRevAccelBeams.22.110701.
@article{osti_1573074,
title = {Soft x-ray seeding studies for the SLAC Linac Coherent Light Source II},
author = {Hemsing, E. and Marcus, G. and Fawley, W. M. and Schoenlein, R. W. and Coffee, R. and Dakovski, G. and Hastings, J. and Huang, Z. and Ratner, D. and Raubenheimer, T. and Penn, G.},
abstractNote = {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.},
doi = {10.1103/PhysRevAccelBeams.22.110701},
journal = {Physical Review Accelerators and Beams},
number = 11,
volume = 22,
place = {United States},
year = {2019},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevAccelBeams.22.110701

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Cited by: 3 works
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    Works referencing / citing this record:

    Statistical theory of a self-seeded free electron laser with noise pedestal growth
    journal, January 2020


    What are the advantages of ghost imaging? Multiplexing for x-ray and electron imaging
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