W-band free electron lasers for high gradient structure research

摘要

We analyze two designs for W-band free electron lasers for application as laboratory instruments in the study of millimeter wave accelerators at high gradient. The first design is based on the linear induction accelerator LELIA (CEA/CESTA, France), employs a 1-kA, 80-ns electron pulse, and corresponds to a helical TE/sub 11/ 200 MW W-Band amplifier design. We analyze also a W-Band planar ubitron design making use of a SLAC-modulator, operating with a 480 kV, 300 A, sheet beam gun and producing a 5 MW, 1 /spl mu/s pulse.