Status of the photocathode electron RF gun application studies at Waseda University

We have been developing a high quality electron rf gun for application researches. As an application researches, we are performing soft x-ray generation via laser-Compton scattering and pulse radiolysis researches for studying early reactions of radiation chemistry. They were seemed to be possible due to the successful installation of Cs-Te photocathode. Recently, we are studying about new technique for both applications, such as nano-bunched electron beam production for coherent laser-Compton scattering and super continuum light generation by photonic crystal fiber. Moreover, we are considering our rf gun for applying for cancer treatments using fine flat parallel gamma-ray beam. The status of our rf electron gun and results of application researches will be presented at the conference. (author)