A compact free electron laser investigation

Abstract

An electron beam source based on pseudospark discharge was successful in operation at the beam voltage of 200 keV and beam current of 2 kA. The detailed design of a compact free electron laser using an electron beam by a pseudospark discharge is described. The compact free electron laser consists of a smaller Marx generator with 6 capacitors and switches, a water capacitance of 6 nF and a beam source with a high brightness of 3 x 10(11) A/(m rad)(2). The computer simulation shows that an output power of 101 MW is expected at a frequency of 38 GHz with a beam energy of 300 keV, a current of 2 kA and a beam emittance of 48 mm mrad.