On the effect of RF-Space Charge on the Beam-Field Interaction in Gyrotrons

摘要

The influence of RF-space charge on the beam-field interaction in gyrotrons is reviewed. This effect, formerly considered unimportant, is found to cause recognizable differences in simulations of gyrotrons with high current density, such as today's megawatt level gyrotrons. In this paper, a numerically efficient way of including RF-space charge in the common slow variables model is derived and numerical examples are presented.