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The techniques employed in the numerical simulations of free-electron lasers, in the amplifier as well as the oscillator configuration, are reviewed. Special attention is given to the numerical problems associated with particle initialisation (particle loading), the treatment of the paraxial wave equation, the inclusion of oscillating space charge forces in the longitudinal particle motion and multi-frequency modelling. This overview does not, however, include the particle-in-cell simulations commonly used in plasma physics. Due to the large separation of scales between the wiggler and the radiation wavelengths, this type of technique is impractical for a short-wavelength free-electron laser.

Additional information

Authors: TRAN T M, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne, Lausanne (CH);WURTELE J S, Massachusetts Institute of Technology, Department of Physics and the Plasma Fusion Centre, Cambridge, Mass. (US)
Bibliographic Reference: Article: Physics Reports (Review Section of Physics Letters), Vol. 195 (1990) No. 1, pp. 1-21
Record Number: 199110060 / Last updated on: 1994-12-02
Original language: en
Available languages: en