Two-Stage FEL (Free Electron Laser) Research at KMS Fusion, Inc.

Abstract : The basic concept and constraints on two stage free electron lasers are summarized, and the two stage FEL design employing a helical wiggler and quasioptical cavity is described. Recent work is reviewed in the areas of cavity design, modeling of the field of a permanent magnet helical wiggler, fabrication and calibration of permanent magnet dipole rings, and electrostatic accelerator design. A list of publications resulting from this project is given in the references.