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The experimental demonstration of a gyrotron backward wave oscillator (gyro-BWO) using a cusp electron gun and helically corrugated waveguide will be presented. Operating in the W-band frequency range the gyro-BWO is predicted to output ~10 kW with a frequency tuning range of 85-104 GHz at 18% electronic efficiency before the energy recovery. The annular axis-encircling electron beam has been experimentally...
Presented in this paper are the results of a 10 kW W-Band Gyro-BWO based on a helically corrugated interaction region and novel cusp electron gun. Microwave measurements of the helically corrugated interaction region are shown to give a low loss of 1dB over the frequency region of interest (84-104 GHz). The measured dispersion was found in good agreement with the analytically calculated and numerically...
The gyrotron-backward wave oscillator (Gyro-BWO) is an efficient source of coherent, high-power microwaves over the centimeter to millimeter wavelength range. At the University of Strathclyde a project has been undertaken to create a Gyro-BWO in the W-band frequency band (75 -110GHz) outputting in continuous wave (CW) operation. The dispersion for the waveguide was found numerically, analytically...
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