A cusp electron gun for millimeter wave gyrodevices

被引：100

作者：

Donaldson, C. R. ^{[1
]}

He, W. ^{[1
]}

Cross, A. W. ^{[1
]}

Li, F. ^{[1
]}

Phelps, A. D. R. ^{[1
]}

Zhang, L. ^{[1
]}

Ronald, K. ^{[1
]}

Robertson, C. W. ^{[1
]}

Whyte, C. G. ^{[1
]}

Young, A. R. ^{[1
]}

机构：

[1] Univ Strathclyde, SUPA, Dept Phys, Glasgow G4 0NG, Lanark, Scotland

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 14期

基金：

英国工程与自然科学研究理事会;

关键词：

electron guns; gyrotrons; millimetre wave devices; submillimetre wave devices; VELOCITY-SPREAD; GYROTRON; AMPLIFIER; GEOMETRY; DESIGN; BEAMS;

D O I：

10.1063/1.3374888

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The experimental results of a thermionic cusp electron gun, to drive millimeter and submillimeter wave harmonic gyrodevices, are reported in this paper. Using a "smooth" magnetic field reversal formed by two coils this gun generated an annular-shaped, axis-encircling electron beam with 1.5 A current, and an adjustable velocity ratio alpha of up to 1.56 at a beam voltage of 40 kV. The beam cross-sectional shape and transported beam current were measured by a witness plate technique and Faraday cup, respectively. These measured results were found to be in excellent agreement with the simulated results using the three-dimensional code MAGIC.

引用

页数：3

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