FEL research at FEL Research Institute in Osaka

Free Electron Laser Research Institute (FELI) had been established by the Key Technology Center project in Japan. Now it is operated under the collaboration of several organization after the end of the project. The FEL with wide tunable wave range from 0.27 to more than 50 micrometer installed in FELI has being used for applications of various fields. Beside the application of FEL as a users facility at FELI, an effort to extend the wavelength toward shorter region has being performed. SASE FEL with micro-wiggler and seed X-ray is proposed and preliminary investigation is under way. The basic development of micro-wiggler is almost finished. For seed X- ray, we will use Laser-produced Plasma X-ray. The 3D computer simulation results shows the feasibility of SASE in the range of up to 0.01 micrometer with FELI accelerator. This article describe the status and investigation of FELI update.