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Design Simulation of Multistage Depressed Collector for Coupled Cavity Traveling Wave Tubes
Author(s): 
Pages: 624-636
Year: Issue:  6
Journal: Journal of Vacuum Science and Technology

Keyword:  Coupled cavity TWTMDCPPMSecondary electron emissionEfficiency of MDCElectron streaming backwardSimulation;
Abstract: 本文中较全面地讨论了多级降压收集极的物理模型.通过分析3个工作频率点高频输出端的电子注特性来设计多级降压收集极:借助电子注层流性参量,对带有再聚焦磁场的散群聚区进行优化,得到磁场参量的初始值;运用电子轨迹等效电位图,确定各电极的初步电位,通过收集极区结构和电极电位的优化得到较高的收集极效率;通过收集极的全面优化使收集极效率得到了进一步的提高;在考虑二次电子发射情况下,对收集极结构和电极电位进行优化...
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