Present status of Kyoto University MIR-FEL facility

A linac based Mid Infrared Free electron Laser (MIR-FEL) facility has been developed in Institute of Advanced Energy, Kyoto University. The linac consists of 4.5-cell thermionic RF gun and S-band accelerator tube generates up to 40 MeV electron beam whose macro-pulse duration is 5.5 μs. Up to now 12-14 μm FEL beam has been generated by use of this electron beam and continuous studies are carried out to extend the FEL wavelength as well as to generate stabilized lasing. For MIR-FEL application researches an MIR-FEL transport line has been installed and an application room is under preparation. The KU-FEL facility is open for users through 'The Collaboration Program of the Laboratory for Complex Energy Processes, Institute of Advanced Energy, Kyoto University'. http://www.iae.kyoto-u.ac.jp/. (author)