Development of a photocathode RF gun for an L-band electron linac

We have begun development of the L-band photocathode RF gun for the L-band linac at ISIR, Osaka University to advance studies with the high-intensity and low emittance electron beam, in collaboration with KEK and Hiroshima University. As the fist step, we plan to develop and commission the L-band RF electron gun for the Superconducting RF Test Facility at the High Energy Accelerator Research Organization. While waiting for delivery of an RF cavity and an input coupler from the Fermi National Accelerator Laboratory, we are preparing for the low lever RF measurement. Some results of the preparatory works are reported, including computer simulation for tuning of RF characteristics of the cavity, design of an input coupler for low level RF measurement, and computer simulation to evaluate characteristics of the accelerated electron beam.