Title :
Thermionic gyro-BWO experiment using a helical interaction waveguide
Author :
He, Wei ; Cross, Adrian W. ; Whyte, Colin G. ; Young, Alan R. ; Phelps, Alan D. R. ; Ronald, Kevin ; Rafferty, E.G. ; Thomson, J. ; Robertson, Craig W. ; Speirs, D.C.
Author_Institution :
Dept. of Phys., Strathclyde Univ., Glasgow, UK
fDate :
27 Sept.-1 Oct. 2004
Abstract :
A helically corrugated waveguide was used for a gyrotron backward wave oscillator (gyro-BWO) experiment. With a thermionic electron beam of 90-210 kV in energy, 2-3 A in current and pitch alpha of up to 1.6 the oscillator achieved a maximum power of 70 kW, a frequency-tuning band of 8.0-9.5 GHz (17% relative tuning range) with a maximum electronic efficiency of 16%.
Keywords :
backward wave oscillators; electron beams; electron guns; gyrotrons; helical waveguides; thermionic cathodes; 2 to 3 A; 70 kW; 8 to 9.5 GHz; 90 to 210 kV; electronic efficiency; frequency tuning band; gyrotron backward wave oscillator; helical corrugated waveguide; oscillator pitch alpha; thermionic electron beam; thermionic gyro-BWO; Electron beams; Frequency measurement; Geometry; Gyrotrons; Magnetic field measurement; Optical coupling; Optical reflection; Oscillators; Physics; Tuning;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1422040
