Title :
Transverse emittance of an intense electron short pulse just emitted by the cathode of a RF-FEL photoinjector: influence of electrodynamic effects
Author :
Dolique, J.-M. ; Coacolo, M.
Author_Institution :
Lab. de Phys. des Plasmas, Grenoble I Univ., France
Abstract :
The emittance considered is that of the intense electron short pulse of a high-power RF-FEL, immediately after it has been emitted from the cathode of a photoinjector. In the absence of any azimuthal fluid motion, and for an axisymmetric pulse, the normalized RMS transverse emittance for the whole pulse is analytically calculated. Near the cathode the acceleration is so strong that the relativistic acceleration and retardation effects must be taken into account. The dependence of the normalized RMS transverse emittance on z as well as on other parameters, is considered.<>
Keywords :
electrodynamics; free electron lasers; RF-FEL photoinjector; axisymmetric pulse; azimuthal fluid motion; cathode; electrodynamic effects; high-power RF-FEL; intense electron short pulse; normalized RMS transverse emittance; relativistic acceleration; retardation effects; Acceleration; Cathodes; EMP radiation effects; Electrodynamics; Electromagnetic fields; Electron beams; Electron emission; Free electron lasers; Laser beams; Radio frequency;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.164259
