Generation of a high-quality electron beam for application in cyclotron autoresonance maser experiments.

Abstract

In this paper we report on the numerical calculations and experimental testing of a nonadiabatically electrostatic pumped beam. These initial investigations are intended to lay the groundwork for generating a high-quality electron beam, which will be used for cyclotron autoresonance maser driving. The present gun geometry produces a beam at a voltage of 500 kV in a 30-ns pulse, with total power between 150 and 300 MW The experimental data characterizing the beam properties are compared with numerical simulation results, indicating that the gun has operated essentially as predicted by theory. \textcopyright{} 1996 The American Physical Society.