GENERATION OF A HIGH-QUALITY ELECTRON-BEAM FOR APPLICATION IN CYCLOTRON AUTORESONANCE MASER EXPERIMENTS

In this paper we report on the numerical calculations and experimental testing of a nonadiabatically electrostatic pumped beam. These initia l investigations are intended to lay the groundwork for generating a h igh-quality electron beam, which will be used for cyclotron autoresona nce maser driving. The present gun geometry produces a beam at a volta ge 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 operat ed essentially as predicted by theory.