A high-power high-efficiency klystronlike relativistic backward wave oscillator with a dual-cavity extractor

被引：83
|
作者：
Xiao, Renzhen [1 ]
Chen, Changhua [1 ]
Sun, Jun [1 ]
Zhang, Xiaowei [1 ]
Zhang, Lijun [1 ]
机构：
[1] NW Inst Nucl Technol, Xian 710024, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 10期
关键词：
D O I：
10.1063/1.3562612
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A klystronlike relativistic backward wave oscillator (RBWO) with a dual-cavity extractor is presented. The phase of the axial electric field component E-z varies by 0 degrees in the dual-cavity extractor, and a larger electric field appears in the second extraction cavity, in comparison with a single-cavity extractor. Such an improved field distribution is beneficial for converting modulated beam power into microwave power. The particle in cell simulation results reveal that microwaves with power of 10 GW, frequency of 4.3 GHz are generated, and conversion efficiency is 48% when diode voltage is 1.2 MV and beam current 17.3 kA. (C) 2011 American Institute of Physics. [doi:10.1063/1.3562612]
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