A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   V   W   Y   Z    

Ferrario, M.

  
Paper Title Page
WG343 Production of Coherent X-Rays with a Free-Electron Laser Based on Optical Wiggler 39
 
  • C. Maroli, V. Petrillo
    Universita' degli Studi di Milano, Milano
  • A. Bacci
    INFN/LASA, Segrate (MI)
  • M. Ferrario
    INFN/LNF, Frascati (Roma)
  • L. Serafini
    INFN-Milano, Milano
 
  Funding: Istituto Nazionale di Fisica Nucleare(INFN) - Sezione di milano

The interaction between high-brightness electron beams and counter-propagating laser pulses produces X-rays via Thomson scattering. If the laser source is long enough the electrons bunch on the scale of the emitted X-ray wavelength and a regime of collective (coherent) emission can be established. The emitted radiation grows exponentially and the system behaves as a FEL with optical undulator. The bandwidth of the emitted X-rays is sharper than that of the usual incoherent emission. Emittance of the beam and gradients and irregularities of the laser intensity spatial distribution are the principal factors that limit the growth of the X-ray signal. The characters of the emission and the corresponding X-ray spectra are analyzed on the basis of a 3D code. The scalings typical of the optical wiggler with very short gain lengths and short time duration of the ineteraction allow considerable emissions also in violation of criteria valid for static wigglers. The parameters chosen in the cases examined allow a classical treatment of the lasing process.

 
slides icon Slides
WG434 Homdyn Benchmark  
 
  • M. Ferrario
    INFN/LNF, Frascati (Roma)
 
  In this presentation benchmark test simulations are reported performed with the HOMDYN code  
slides icon Slides