Title :
Design of the radial divergent sheet beam electron optical system with cylindrical emission surface
Author :
Xinyi Li;Xianbao Shi;Zhanliang Wang;Zhaoyun Duan;Huarong Gong;Yanyu Wei;Jinjun Feng;Yubin Gong
Author_Institution :
National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, China
Abstract :
The radial sheet beam traveling wave tubes can work at the frequency of millimeter wave band, have the properties of high efficiency, broad bandwidth, miniaturized dimensions, and easily to be integrated and so on. The radial divergent sheet beam electron optical system with cylindrical emission surface is designed for the Ka band radial sheet beam traveling wave tubes in this paper. The radial divergent sheet beam with the open angle of 8 deg and the thickness of 0.28 mm, generated by the electron gun with 1800V, 84.9 mA, can achieve 100% transmission efficiency in a 20 mm length radial direction drift tunnel with the open angle of 10 deg and the height of 0.36 mm.
Keywords :
"Optical beams","Magnetic fields","Electron beam applications","Electron optics","Optical device fabrication","Trajectory"
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015 40th International Conference on
Electronic_ISBN :
2162-2035
DOI :
10.1109/IRMMW-THz.2015.7327435
