Computer simulations of gyrotrons with coaxial cavities

Computer simulations of high power coaxial gyrotrons have been done by using modified code MAGY. 1.5 MW, 165 GHz FZK (Germany) and industrial 2 MW/CW, 170 GHz CRPP/EPFL, FZK, TEKES and males Electron Devices gyrotrons have been used as basic configurations for modelling. Results of simulations, their comparison with experiments and discussion on advantages and limitations of gyrotron computer simulations will be presented.