Conceptual design of a 20-kW cw 1.5-μm industrial FEL

Abstract

The JAERI superconducting rf linac based FEL has successfully been lased to produce a 0.3 kW FEL light and 100 kW or larger electron beam output in quasi continuous wave operation in 1999. The 1 kW class output as our present program goal will be achieved to improve the FEL lasing mode, optical out coupling method, electron gun, and electron beam optics in the JAERI FEL. As our next 5 year program goal is the 100 kW class FEL light and a few tens MW class electron beam output in average, quasi continuous wave operation of the light and electron beam will be planned in the JAERI superconducting rf linac based FEL facility. Conceptual and engineering design options needed for such a very high power operation and shorter wavelength light sources will be discussed to improve and to upgrade the existing facility.