Evolution of transverse modes in FEL and the method of approximants

G. Dattoli, M. Carpanese, E. Sabia, A. Segreto, A. Torre, G.K. Voykov

Research output: Contribution to journalArticle


The FEL paraxial wave equation is investigated within the context of the method of the approximants, which has been successfully applied to the one-dimensional FEL dynamics including high gain, inhomogeneous broadening and saturation effects. The method is effective in confining the transverse mode dynamics into a simple analytical model, which is amenable for a fast and reliable numerical procedure, appropriate to small computers. The case of uniform e-beam current profile is considered in some details. Numerical results are presented and compared with those from more sophisticated codes.
Original languageEnglish
Pages (from-to)265 - 268
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1-3
Publication statusPublished - 1 Jul 1997
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

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