2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/87554We present the anticipated performances of a multi-cell RF injector operated either with a thermoionic cathode or with a gated photo-cathode. By means of a magnetic compression and a Coherent Spontaneous Emission seeded FEL radiating at 100 to 200 mm, the system produces a beam fully bunched with a 200 A peak current at 2 mm.mrad rms emittance. The electron bunch is a few FEL buckets long and phase-locked to the RF so to make this device an ideal injector for second generation plasma acceleration experiments.Presented at VI European Particle Accelerator Conference, Stockholm, Sweden (June 22-26, 1998)Accelerator Physicstext