Title :
W-band Gyro-TWA experiment using a helically corrugated waveguide
Author :
He, Wenlong ; Donaldson, Craig R. ; Zhang, Liang ; McElhinney, Paul ; Ronald, Kevin ; Phelps, Alan D R ; Whyte, Colin ; Cross, Adrian W.
Author_Institution :
Dept. of Phys. SUPA, Univ. of Strathclyde, Glasgow, UK
Abstract :
A W-band gyrotron travelling wave amplifier (Gyro-TWA) with a cusp electron gun and a helically corrugated waveguide (HCW) is presented. The large orbit electron beam from the cusp gun interacts resonantly with an ideal eigenwave existing in the interaction region based on the cyclotron resonance maser instability. When driven by the 40 keV, 1.5 A electron beam the amplifier was simulated to output a maximum 10 kW (CW) with a 3 dB frequency bandwidth of 90-100 GHz and saturated gain of 40 dB. Linear analysis, numerical simulations and the measured results of the amplifier as well as the input coupler and the output window are presented.
Keywords :
electron guns; travelling wave amplifiers; waveguides; W-band gyro-TWA experiment; W-band gyrotron travelling wave amplifier; cusp electron gun; cyclotron resonance maser instability; helically corrugated waveguide; ideal eigenwave; large orbit electron beam; Bandwidth; Electron beams; Gain; Gyrotrons; Helium; Power amplifiers; Power generation; Gyro-TWA; Gyrotron; Helically corrugated waveguide; W-band Gyro-devices;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2012 IEEE Thirteenth International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4673-0188-6
Electronic_ISBN :
978-1-4673-0187-9
DOI :
10.1109/IVEC.2012.6262220
