An electron optical system for sheet beam vacuum electron devices

Jianqiang Lai,Yubin Gong,Yanyu Wei,Xiong Xu,Wenxiang Wang

Microwave Conference Proceedings（2011）

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摘要

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.

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关键词

focus system,multistage depressed collector,electro-optical devices,vacuum techniques,electron optical system,slow wave structure,slow wave structures,pcm magnet stack,sheet beam device,electron wave tubes,electron gun,electron guns,electron-wave interaction,thermal distribution,vacuum electron device,trajectory,current density,three dimensional,electron beam

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