Chirped and modulated electron pulse free electron laser techniques

J. R. Henderson, L.T. Campbell, B.W.J. McNeil

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

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A potential method to improve the free electron laser’s output when the electron pulse has a large energy spread is investigate and results presented. A simplified model is the first given, in which there are a number of linearly chirped beamlets equally separated in energy and time. By using chicanes, radiation from one chirped beamlet is passed to the next, helping to negate the effect of the beamlet chirps and maintaining resonant interactions. Hence the addition of chicane allow the electrons to interact with a smaller range of frequencies (Δω<2ργr), sustaining the FEL interaction. One method to generate such a beamlet structure is presented and is shown to increase FEL performance by two orders of magnitude.
Original languageEnglish
Title of host publicationProceedings of FEL2014
Subtitle of host publication36th International Free Electron Laser Conference
EditorsJan Chrin, Sven Reiche, Volker RW Schaa
Number of pages7
Publication statusPublished - Jan 2015
Event36th International Free Electron Laser Conference - Basel, Switzerland
Duration: 25 Aug 201429 Aug 2014


Conference36th International Free Electron Laser Conference
Abbreviated titleFEL 2014


  • free electron laser
  • electron pulse
  • chirped beamlet


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