Experimental investigation of the relativistic backward wave oscillator with a periodic guiding magnetic field

Experiment is carried out on the accelerator Sinus-700 to investigate the Relativistic Backward Wave Oscillator(RBWO) with a periodic guiding magnetic field.When the strength of the guiding magnetic field,whose period is 4.6 cm,is 0.54 T,a microwave output power of 0.95 GW at 9.1 GHz microwave frequency is achieved.It is shown that the RBWO with a periodic guiding magnetic field is feasible.