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https://doi.org/10.18429/JACoW-FLS2023-TU2A2
Title Single Longitudinal Mode Generation in Slippage-dominated, Tapered-undulator SASE Soft X-ray FEL
Authors
  • D.C. Nguyen, M. Dunham, W. Lou, C.E. Mayes, G. Stupakov
    xLight, Palo Alto, USA
Abstract SASE FELs operating in the soft X-ray region exhibit multiple temporal and spectral spikes with an overall spectral bandwidth of about 1.5 times the FEL rho parameter. While many ideas have been proposed to achieve fully coherent X-ray FELs, only monochromatic seeding, either harmonic seeding* or SASE self-seeding**, has been experimentally demonstrated to narrow the output spectra of soft X-ray FELs. In this paper, we study a different method that relies on the Slippage-dominated Tapered Undulator (STU) SASE concept to produce a single longitudinal mode in a soft X-ray FEL driven by ~10-fs, 16-pC electron bunches. We pre-sent numerical simulation results that demonstrate single-mode generation and narrow-lined spectra without seeding in a STU-SASE FEL at 6.67 nm.
Footnotes & References * E. Alaria et al., Nat Photon 7 (2013) 913-918
** D. Ratner et al., PRL 114 (2015) 050801
Paper download TU2A2.PDF [0.886 MB / 4 pages]
Slides download TU2A2_TALK.PDF [1.125 MB]
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Conference FLS2023
Series ICFA Advanced Beam Dynamics Workshop (67th)
Location Luzern, Switzerland
Date 27 August-01 September 2023
Publisher JACoW Publishing, Geneva, Switzerland
Editorial Board Hans-Heinrich Braun (PSI, Villigen, Switzerland); Jan Chrin (PSI, Villigen, Switzerland); Romain Ganter (PSI, Villigen, Switzerland); Nicole Hiller (PSI, Villigen, Switzerland); Volker RW Schaa (GSI, Darmstadt, Germany)
Online ISBN 978-3-95450-224-0
Online ISSN 2673-7035
Received 22 August 2023
Revised 23 August 2023
Accepted 31 August 2023
Issued 02 December 2023
DOI doi:10.18429/JACoW-FLS2023-TU2A2
Pages 70-73
Copyright
Creative Commons CC logoPublished by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.