HIGH-POWER HARMONIC GYRO-TWTS .2. NONLINEAR-THEORY AND DESIGN

被引：68

作者：

WANG, QS ^{[1
]}

KOU, CS ^{[1
]}

MCDERMOTT, DB ^{[1
]}

LIN, AT ^{[1
]}

CHU, KR ^{[1
]}

LUHMANN, NC ^{[1
]}

机构：

[1] UNIV CALIF LOS ANGELES,DEPT PHYS,LOS ANGELES,CA 90024

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 1992年 / 20卷 / 03期

关键词：

D O I：

10.1109/27.142816

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：

Based upon an analytical study of the stability problems of gyrotron traveling wave amplifiers (gyro-TWT's), the design of an extremely high power second-harmonic gyro-TWT has been developed and then evaluated and optimized with a self-consistent nonlinear numerical simulation code. Although an axis-encircling electron beam yields stronger interaction, a design based on the more common magnetron injection gun (MIG) type beam is presented. Using a 100 kV, 25 A MIG beam with alpha = 1 and an axial velocity spread of 5%, nonlinear self-consistent analysis of a three-stage second-harmonic gyro-TWT amplifier predicts a peak output power of 533 kW, peak efficiency of 21.3% and a 7.4% saturated bandwidth, which verifies the assessments of analytical theory that a stable harmonic gyro-TWT can generate power levels an order of magnitude higher than those possible from a fundamental gyro-TWT. It is shown that the positioning of the electron beam is very important. A multistage structure is employed in the design to recover the loss in gain resulting from the shortening of the interaction sections to ensure stability.

引用

页码：163 / 169

页数：7

共 29 条

[1] MAGNETRON INJECTION GUN (MIG) DESIGN FOR GYROTRON APPLICATIONS [J].