Title :
An electron optical system for sheet beam vacuum electron devices
Author :
Lai, Jianqiang ; Gong, Yubin ; Wei, Yanyu ; Xu, Xiong ; Wang, Wenxiang
Author_Institution :
Vacuum Electron. Nat. Lab., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
In this study we report on a development of electron optical systems including electron gun, focus system and depressed collector for sheet beam vacuum electron devices (VED). To support the requirement of the electron-wave interaction, we aim to produce a beam with current density of approximate 200A/cm2 and an aspect ratio of 6:1. A PCM magnet stack is used for the focusing of the beam in the slow wave structure. A multistage depressed collector dedicated to sheet beam device is proposed, which is expected to aim a higher collector efficiency and better thermal distribution relative to conventional ones.
Keywords :
electro-optical devices; electron guns; electron wave tubes; slow wave structures; vacuum techniques; PCM magnet stack; electron gun; electron optical system; electron-wave interaction; focus system; multistage depressed collector; sheet beam device; slow wave structure; thermal distribution; vacuum electron device; Current density; Electron beam applications; Electron tubes; Magnetic tunneling; Three dimensional displays; Trajectory;
Conference_Titel :
Microwave Conference Proceedings (CJMW), 2011 China-Japan Joint
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4577-0625-7
Electronic_ISBN :
978-7-308-08555-7
