Modelling a laser plasma accelerator driven free electron laser

Badriah Mesfer M Alotaibi, Sh M Khalil, Brian McNeil, Piotr Traczykowski

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Abstract

Free-electron lasers (FEL) are the brightest, coherent sources of short wavelength radiation from the VUV into the x-ray. There is much research interest in reducing the cost and the size of FELs by utilising new accelerator techniques. Laser-plasma accelerator (LPA) are a promising accelerator for next generation compact FEL light sources with many potential advantages due to the high acceleration gradient and large peak currents they offer. The electron beams of a LPA typically have a smaller transverse emittance, a large energy spread and tend to be of shorter duration and higher current than conventional Radio Frequency (RF) accelerators. In this paper, a FEL driven by an electron beam from a typical LPA was simulated using the 3D FEL simulation code Puffin. It is shown that lowering the homogenous electron beam energy spread increases the radiation energy output in a short undulator and , as become less than the FEL, or Pierce parameter ($\rho $), then the peak radiation energy increases and the saturation length reduces significantly as expected.
Original languageEnglish
Article number065007
Number of pages6
JournalJournal of Physics Communications
Volume3
Issue number6
DOIs
Publication statusPublished - 24 Jun 2019

Keywords

  • free electron lasers
  • wavelength radiation
  • x-ray
  • radio frequency accelerators

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