Improved power capacity in a high efficiency klystron-like relativistic backward wave oscillator by distributed energy extraction

被引：15
|
作者：
Xiao, Renzhen [1 ]
Chen, Changhua [1 ]
Cao, Yibing [1 ]
Sun, Jun [1 ]
机构：
[1] Northwest Inst Nucl Technol, Sci & Technol High Power Microwave Lab, Xian 710024, Peoples R China
来源：
JOURNAL OF APPLIED PHYSICS | 2013年 / 114卷 / 21期
基金：
中国国家自然科学基金;
关键词：
MODULATING RESONANT REFLECTOR;
D O I：
10.1063/1.4840956
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
With the efficiency increase of a klystron-like relativistic backward wave oscillator, the maximum axial electric field and harmonic current simultaneously appear at the end of the beam-wave interaction region, leading to a highly centralized energy exchange in the dual-cavity extractor and a very high electric field on the cavity surface. Thus, we present a method of distributed energy extraction in this kind of devices. Particle-in-cell simulations show that with the microwave power of 5.1 GW and efficiency of 70%, the maximum axial electric field is decreased from 2.26 MV/cm to 1.28 MV/cm, indicating a threefold increase in the power capacity. (C) 2013 AIP Publishing LLC.
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页数：5
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