Design of two stage depressed collector for high-power traveling wave tube

Liu Yurong; Liu Bin; Wang Daming

doi:10.11884/HPLPB201729.170144

Volume 29 Issue 10

Oct. 2017

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Article Navigation > High Power Laser and Particle Beams > 2017 > 29(10): 103002

Pan Yafeng, Liu Sheng, Zhang Xibo. An uneven dual-output pulse generator[J]. High Power Laser and Particle Beams, 2015, 27: 125004. doi: 10.11884/HPLPB201527.125004

Citation:

Liu Yurong, Liu Bin, Wang Daming. Design of two stage depressed collector for high-power traveling wave tube[J]. High Power Laser and Particle Beams, 2017, 29: 103002. doi: 10.11884/HPLPB201729.170144

Pan Yafeng, Liu Sheng, Zhang Xibo. An uneven dual-output pulse generator[J]. High Power Laser and Particle Beams, 2015, 27: 125004. doi: 10.11884/HPLPB201527.125004

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Design of two stage depressed collector for high-power traveling wave tube

doi: 10.11884/HPLPB201729.170144

1.
Nanjing Sanle Electronic Group Co Ltd,Nanjing 211800,China

Received Date: 2017-05-02
Rev Recd Date: 2017-07-22
Publish Date: 2017-10-15

Abstract

Abstract

This paper presents a method for design a suitable two stage depressed collector of X band large duty ratio coupled-cavity traveling wave tube (CC-TWT). The axial, radial velocities and radius of 96 electron trajectories in the output potion of this TWT were simulated and analyzed by 2.5 dimensional interaction package owned by 772nd factory. A refocusing segment was designed to improve the flow of electron injection layer with the help of re-simulation of these parameters. Then a two stage depressed collector was designed with optical design, structural design and thermal analysis. Finally, a TWT was assembled for testing. The measured proportion of the current distribution in every collector electrode and the collector efficiency are close to the analytical full-band average results, which means that this analytical method is suitable for design of two stage depressed collector for high-power CC-TWT.
- high power,
- coupled-cavity traveling wave tube,
- two stage depressed collector,
- electron trajectories,
- collector efficiency

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