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Dyunin, E.

Paper Title Page
MOPPH014 Velocity Shot Noise, Space Charge Effects and Coherence Enhancement Schemes in SASE FEL  
 
  • E. Dyunin, A. Gover
    University of Tel-Aviv, Faculty of Engineering, Tel-Aviv
 
  We employ a formulation of the linear transfer matrix of FEL to explore new operating schemes and limiting effects in the high gain regime of FEL. These include analysis of SASE seed radiation injection, pre-bunching schemes, study of the role of velocity shot noise and collective (space charge effects). We propose new schemes for enhancement of the temporal coherence of SASE radiation, and study them by employing the transfer matrix formulation. The numerical computations indicate that X-Ray pulses, spatially and temporally (Fourier transform limited) coherent, are attainable with available high gain FEL parameters. The theoretical model is based presently on single transverse mode excitation (optically guided). Extension to a multi transverse modes excitation model will be outlined.