Title :
Amplification simulation for Ka-band second-harmonic Gyro-TWT using a helical corrugation waveguide
Author_Institution :
Inst. of Appl. Electron., China Acad. of Eng. Phys., Mianyang
Abstract :
The eigenwave dispersion of 8mm 3-folded helical corrugation waveguide is simulated using CST software. The electron beam 80kV and main magnetic field 0.67T are given by the eigenwave dispersion for Ka-band Gyro-TWT using helical waveguide. The beam-wave interaction procedure is simulated using a PIC code, in which TE11 and TE21 coupling mode transform and a right-rotating large-orbit electron bunch are obtained. The maximal output power is about 42.5kW and the maximal gain is about 29.3dB in 35GHz. The 3dB bandwidth is about 8.7% from 33GHz to 35.8GHz.
Keywords :
amplification; helical waveguides; travelling wave tubes; amplification simulation; bandwidth 33 GHz to 35.8 GHz; beam-wave interaction; coupling mode transform; eigenwave dispersion; frequency 35 GHz; gyro-TWT; helical corrugation waveguide; magnetic flux density 0.67 tesla; power 42.5 kW; travelling wave tubes; voltage 80 kV; Bandwidth; Cyclotrons; Electron beams; Frequency; Magnetic fields; Magnetic resonance; Optical coupling; Physics; Power generation; Rectangular waveguides; 8mm 3-folded helical corrugation waveguide; TE11 and TE21 coupling mode; beam-wave interaction; eigenwave dispersion;
Conference_Titel :
Vacuum Electronics Conference, 2008. IVEC 2008. IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4244-1715-5
DOI :
10.1109/IVELEC.2008.4556489
