FREE ELECTRON LASER PROJECTS AT KAERI

KAERI has developed three types of free electron lasers (FELs) since 1992: a millimeter-wave (MMW) FEL driven by a 0.4-MeV electrostatic accelerator, a compact far-infrared (FIR) FEL driven by a 7-MeV microtron, and an infrared FEL with average power of ~ 1kW driven by a 40-MeV supersonducting accelerator. Successful lasing of the MMW FEL and the compact FIR FEL were demonstrated in 1994 and 1999, respectively. A 2-MeV injector for the infrared FEL has been completed, and the main superconducting accelerator section is being constructed. 1