Title :
Optimal Design and Thermal Analysis of Undepressed Collectors for 35-GHz Gyro-TWTs
Author :
Kun Dong ; Ran Yan ; Yong Luo
Author_Institution :
Sch. of Phys. Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A new curved-profile undepressed collector designed for a planned 35-GHz gyrotron traveling-wave tube (gyro-TWT) is proposed in this paper. This gyro-TWT, which is driven by a 70-kV, 10-A electron beam, is working at the fundamental TE01 mode with an efficiency of 20% and gain of 45 dB. Studies including theoretical analysis, numerical calculation, and computational simulation have been done. Key issues concerning electronic collecting density, dissipated power distribution, transmission performance, secondary electrons, and thermal property are considered. Simulation results show that curved-profile structure collector has a better heat-handling capacity than the conventional line structure collector.
Keywords :
electron beams; gyrotrons; millimetre wave generation; thermal analysis; travelling wave tubes; current 10 A; electron beam; electronic collecting density; frequency 35 GHz; gain 45 dB; gyrotron TWT; heat handling capacity; secondary electrons; thermal property; traveling wave tube; undepressed collector optimal design; undepressed collector thermal analysis; voltage 70 kV; Electron beams; Electron tubes; Gyrotrons; Integrated circuit modeling; Numerical models; Thermal analysis; Collecting density; collector; gyrotron traveling-wave tube (gyro-TWT); secondary electrons; thermal analysis; thermal analysis.;
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/TED.2015.2438111
