Status report of the photocathode RF-gun system and application research at Waseda University

At Waseda University, we have been developing a compact laser photocathode RF gun to generate high quality electron beam for application researches. The RF gun system is composed of BNL type S-band RF cavity with Cs-Te photocathode, a solid-state picosecond Nd:YLF laser to irradiate photocathode and an RF power source. Although our linac system is very compact (about 2m x 2.5m), electron beam generated from the gun has enough energy and charge for application researches. As application research, pulse radiolysis and MRT (Micro planer beam Radiation Therapy) have been conducted. In this conference, the current status and specifications of our electron linac system, results of application researches and future prospective are presented. (author)