INSTRUMENTATION FOR THE ASTA PHOTOCATHODE GUN AT SLAC

An accelerator test stand has been constructed at SLAC to characterize laser-assisted photocathode processing, electron beam emission physics and front-end RF gun performance. The objective of the research program is to identify definitive ‘recipes’ for high-reliability photocathode preparation resulting in persistent high quantum efficiency and low beam emittance. In this paper we report on timing, optics and instrumentation for the Ti:Sapphire drive laser and diagnostics for the electron beam.