High-order mode interaction structure for a W-band CW sheet beam extended interaction klystron

To solve the problem of mode competition in high-order working modes, this paper presents a fast design method based on the TM31-2π mode for the dumbbell shaped extended interaction cavity. Based on the equivalent circuit theory, the high-frequency characteristics of the structure are studied. In ad...

Full description

Saved in:
Bibliographic Details
Published inAIP advances Vol. 12; no. 11; pp. 115308 - 115308-7
Main Authors Jin, Qi, Geng, Zhihui, Zhang, Rui, Xie, Bingchuan, Wang, Shuzhong, Liao, Yunfeng, Yang, Xiudong, Xu, Shouxi
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 01.11.2022
AIP Publishing LLC
Subjects
Continuous radiation
Electron beams
Equivalent circuits
Holes
Klystrons
Permanent magnets
Waveguides
Online AccessGet full text

Cover

More Information
Summary:To solve the problem of mode competition in high-order working modes, this paper presents a fast design method based on the TM31-2π mode for the dumbbell shaped extended interaction cavity. Based on the equivalent circuit theory, the high-frequency characteristics of the structure are studied. In addition, we propose a W-band continuous wave sheet beam extended interaction klystron high-frequency circuit. The circuit was driven by a 20 kV and 0.85 A sheet electron beam, with a 3.2 × 0.3 mm2 section. The beam was focused by a 0.8 T permanent magnet system. The high-frequency system adopts five dumbbell shaped five-gap cavities, and the output system adopts a symmetrical output waveguide. The 3D particle-in-cell simulation shows that more than 1.5 kW power can be obtained at an input power of 0.12 W, and the electron efficiency and gain are 9.2% and 41.2 dB, respectively.
ISSN:2158-3226
2158-3226
DOI:10.1063/5.0122835