Title :
Design parameters of a high-efficiency 1.7-GHz gyropeniotron amplifier
Author :
Ganguly, A.K. ; Ahn, Saeyoung ; Zaidman, Ernest G. ; Gilmour, A.S., Jr.
Author_Institution :
US Naval Res. Lab., Washington, DC, USA
fDate :
10/1/1991 12:00:00 AM
Abstract :
The feasibility of the gyropeniotron amplifier as a high-efficiency, high-power RF source to act as driver for accelerator in the 0.8-1.7-GHz frequency range is discussed. The klystrode is difficult to operate in this frequency range. Design parameters are given for a 1.7-GHz gyropeniotron operating with an axis-encircling beam (100 keV, 10 A) in a magnetron-type slotted waveguide. The external magnetic field required is 326 G. The calculated efficiency for second cyclotron harmonic operation is 78% with a cold beam and 66% with a beam having 2% axial velocity spread and 5% guiding center spread. The depressed collector technique can easily be applied to enhance the efficiency since the spent beam in a gyropeniotron has little velocity spread
Keywords :
gyrotrons; microwave amplifiers; modelling; ultra-high-frequency tubes; 0.8 to 1.7 GHz; 10 A; 100 keV; 326 G; 66 percent; 78 percent; accelerator driver; axis-encircling beam; depressed collector technique; gyropeniotron amplifier; high-efficiency; high-power RF source; nonlinear modelling; saturation efficiency; second cyclotron harmonic operation; Cyclotrons; Driver circuits; Electrons; High power amplifiers; Magnetic fields; Oscillators; Power amplifiers; Power generation; Radio frequency; Radiofrequency amplifiers;
Journal_Title :
Electron Devices, IEEE Transactions on
