Abstract
A photo-injector has been designed to yield high-brightness electron bunches for the ELSA free electron laser. The electron beam is produced by a laser-driven photocathode, rapidly accelerated to relativistic energies in a single 144 MHz rf cavity and focused by a magnetic lens for bunch characteristics measurements. The TBCI-SF code is used to simulate the beam dynamics in the photo-injector and the associated diagnostic line. Given the initial laser parameters (pulse duration, radial and longitudinal distributions, illuminated area) and the rf fields, the longitudinal and transverse phase-space distributions are computed for the experimental setup. Results are presented and compared with recently obtained experimental data.
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