All Cavity-Magnetron Axial Extraction Technique

被引：40

作者：

Hoff, Brad W. ^{[1
]}

Greenwood, Andrew D. ^{[1
]}

Mardahl, Peter J. ^{[1
]}

Haworth, Michael D. ^{[1
]}

机构：

[1] USAF, Directed Energy Directorate, Res Lab, Albuquerque, NM 87117 USA

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2012年 / 40卷 / 11期

关键词：

High power microwaves; relativistic magnetron; radio-frequency extraction; CATHODE;

D O I：

10.1109/TPS.2012.2217758

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A compact axial pi-mode extraction scheme, which is based on a patent by Greenwood, is demonstrated in conjunction with the UM/L-3 relativistic magnetron using the particle-in-cell code ICEPIC. Cases utilizing Greenwood's extraction technique were compared with power extraction using traditional radial waveguides. Average extracted power values in all simulated axial cases were found to be within +/-6.5% of the radial cases. Cases utilizing 85 degrees and 90 degrees sector waveguides were found to have efficiencies up to ten percentage points higher than the radial case. The best performing case was found to use a set of three axially oriented 90 degrees sector waveguides, shorted on the upstream side, with the short located 15 cm from the center of the magnetron apertures.

引用

页码：3046 / 3051

页数：6

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