Title :
35 GHz third-harmonic gyrotron with a permanent magnet system
Author :
Li Hongfu ; Xie Zhonglian ; Wang Wenxiang ; Luo Yong ; Du Pinzhong ; Den Xue ; Wang Huanjun ; Yu Sheng ; Niu Xinjian ; Wang Li ; Liu Shenggang
Author_Institution :
Inst. of High Energy Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A systematic theoretical and experimental study on 35 GHz 45 kV third-harmonic gyrotron with a permanent magnet system is presented in this paper. A complex cavity with gradual transition, and a diode magnetron injection electron gun (MIG) are employed in the gyrotron. The permanent magnet system provided the axial magnetic field of about 4.5 kG in the cavity region. The Ka band third-harmonic gyrotron with a permanent magnet system has been designed, constructed and tested. A peak output power of 147.3 kW was obtained at a beam voltage of 45 kV with beam current of 32.2 A, corresponding to an efficiency of 10.2%.
Keywords :
cavity resonators; electron guns; gyrotrons; millimetre wave tubes; permanent magnets; 10.2 percent; 147.3 kW; 32.2 A; 35 GHz; 4.5 kG; 45 kV; Ka band; axial magnetic field; beam voltage; diode magnetron injection electron gun; gradual transition complex cavity; peak output power; permanent magnet system; third-harmonic gyrotron; Diodes; Electron beams; Gyrotrons; Magnetic fields; Maxwell equations; Millimeter wave radar; Nonlinear equations; Permanent magnets; Structural beams; Voltage;
Conference_Titel :
Infrared and Millimeter Waves, 2002. Conference Digest. Twenty Seventh International Conference on
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-7423-1
DOI :
10.1109/ICIMW.2002.1076204
