Design of high-voltage and high-brightness pseudospark-produced electron beam source for a Raman free-electron laser

Abstract

The design of a pseudospark chamber, a high-voltage (>100 kV), high-current density, low-emittance and high-brightness electron beam source which can provide high-quality beams for free-electron lasers (FELs), driven by a modified pulse line accelerator, is presented. Based on the hollow cathode (HC) effect and the pseudospark (PS) empirical formula, the HC parameters, the cathode-anode separation, and the working gas pressure region are determined. The general experimental setup of the high-brightness PS-produced electron beam source is shown. (C) 1996 Society of Photo-Optical instrumentation Engineers.