Unaveraged modelling of a LWFA driven FEL

L T. Campbell, A. R. Maier, F. J. Gruener, B W. J. McNeil

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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Preliminary simulations of a Laser Wakefield Field Accelerator driven FEL are presented using the 3D unaveraged, broad bandwidth FEL simulation code Puffin. The radius of the matched low emittance electron beam suggests that the FEL interaction will be strongly affected by radiation diffraction. The parameter scaling and comparison between 3D and equivalent 1D simulations appears to confirm the interaction is diffraction dominated. Nevertheless, output powers are predicted to be greater than those of similar unaveraged FEL models. Possible reasons for the discrepancies between the averaged and unaveraged simulation results are discussed.
Original languageEnglish
Title of host publicationFEL 2013
Subtitle of host publicationProceedings of the 35th International Free-Electron Laser Conference
EditorsCaitlin Scholl, Volker RW Schaa
Number of pages4
Publication statusPublished - 30 Nov 2013
EventFEL 2013: 35th International Free Electron Laser Conference - Marriott Marquis, New York, United States
Duration: 26 Aug 201330 Aug 2013
Conference number: 35


ConferenceFEL 2013
CountryUnited States
CityNew York
Internet address


  • free electron laser
  • laser plasma acceleration
  • computational physics
  • radiation sources
  • unaveraged modelling
  • laser wake field accelerators
  • Puffin
  • electron beam

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