EFFICIENCY ENHANCEMENT OF HIGH-POWER VACUUM BWOS USING NONUNIFORM SLOW-WAVE STRUCTURES

被引：86

作者：

MORELAND, LD

SCHAMILOGLU, E

LEMKE, RW

KOROVIN, SD

ROSTOV, VV

ROITMAN, AM

HENDRICKS, FJ

SPENCER, TA

机构：

[1] SANDIA NATL LABS,DEPT 1241,ALBUQUERQUE,NM 87131

[2] RUSSIAN ACAD SCI,INST HIGH CURRENT ELECTR,SIBERIAN BRANCH,TOMSK 634055,RUSSIA

[3] USAF,PHILLIPS LAB,ADV WEAPONS & SURVIVABIL DIRECTORATE,KIRTLAND AFB,NM 87117

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 1994年 / 22卷 / 05期

关键词：

D O I：

10.1109/27.338268

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：

The Sinus-6, a high-power relativistic repetitively-pulsed electron beam accelerator, is used to drive various slow wave structures in a BWO configuration in vacuum. Peak output power of about 550 MW at 9.45 GHz was radiated in an 8-ns pulse. We describe experiments which study the relative efficiencies of microwave generation from a two-stage nonuniform amplitude slow wave structure and its variations without an initial stage. Experimental results are compared with 2.5 D particle-in-cell computer simulations. Our results suggest that prebunching the electron beam in the initial section of the nonuniform BWO results in increased microwave generation efficiency. Furthermore, simulations reveal that, in addition to the backward propagating surface harmonic of the TM(01) mode, backward and forward propagating volume harmonics with phase velocity twice that of the surface harmonic play an important role in high-power microwave generation and radiation.

引用

页码：554 / 565

页数：12

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