Particle simulation and experimental study of subnanosecond millimeter wave backward wave oscillator

The particle simulation of the subnanosecond millimeter wave backward wave oscillator was carried out by KARAT code, the experiment was done under the condition of the electron beam with voltage 200 kV, current 500 A, pulse width 1.65 ns, and guiding magnetic field 1.7 T. The output millimeter wave with millimeter wave power 40 MW, pulse width 500 ps, frequency 37.6 GHz, repetition rate 10 Hz and radiation mode TE11 was acquired by the experiment.