Title :
Latest experiments of W-band gyro-BWO using helically corrugated waveguides
Author :
He, Wei ; Donaldson, C.R. ; Zhang, Leiqi ; McElhinney, P. ; Phelps, Alan D. R. ; Ronald, Kevin ; Cross, Adrian W.
Author_Institution :
Dept. of Phys., Univ. of Strathclyde, Glasgow, UK
Abstract :
Latest experimental developments of W-band gyro-devices with helically corrugated waveguides and a cusp electron gun are presented. The cusp generated a 40 keV, 1.5 A axis-encircling electron beam. Helical corrugated waveguides have ideal dispersive properties which improve the frequency tuning range of a gyrotron backward wave oscillator (gyro-BWO) whilst maintaining the already good efficiency of operation. The output power of the gyro-BWO was measured to be 12 kW with a frequency tuning range of 88-103 GHz.
Keywords :
backward wave oscillators; dispersion (wave); electron beams; electron guns; gyrotrons; helical waveguides; W-band gyro-BWO; W-band gyro-devices; axis-encircling electron beam; cusp electron gun; dispersive properties; electron volt energy 40 keV; frequency 88 GHz to 103 GHz; frequency tuning range; gyrotron backward wave oscillator; helical corrugated waveguides; power 12 kW; Current measurement; Electron beams; Frequency measurement; Gyrotrons; Oscillators; Temperature measurement; Tuning;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on
Conference_Location :
Mainz
DOI :
10.1109/IRMMW-THz.2013.6665707
