Simulations of the suitability of a DC electron photogun and S-band accelerating structure as input to an X-band linac

Abstract Work has been underway for some time to design a compact electron beamline utilising X-band linear accelerating structures in the new Melbourne Laboratory Accelerators and Beams (X-LAB). The original utilised an S-band RF photogun as input pair of high gradient structures, but we have motivated investigate alternative starting section allow initial testing. This will utilise DC structure similar those used at Australian Synchrotron. Simulation results incorporating space charge composed photogun, two be presented. These simulation optimised minimum emittance end beamline.