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collective-effects

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THPP049 Collective Effects in the Thomson Back-Scattering between a Laser Pulse and a Relativistic Electron Beam laser, electron, radiation, x-ray 580
 
  • V. Petrillo, C. Maroli
    Universita' degli Studi di Milano, MILANO
  • A. Bacci, L. Serafini
    INFN-Milano, Milano
  • M. Ferrario
    INFN/LNF, Frascati (Roma)
  
 

Funding: Università degli Studi di MIlano-INFN Via Celoria,16 MIlano (Italy)

Collective effects in the radiation emission process via Thomson back-scattering of an intense optical laser pulse by high brightness electron beams are analyzed. The micro-bunching of the electron beam on the scale of the emitted radiation wavelength and the consequent free-electron-laser instability may enhance significantly the total number of emitted photons. Scalings of the radiation properties, both in the collective and in the incoherent spontaneous regime, versus laser and electron beam parameters are discussed. Transverse effects due to radiation diffraction, finite emittance of the beam, and transverse distribution of the laser energy are studied.