Formation of laminar electron flow for a high-power sub-THz gyrotron

被引：8

作者：

Yamaguchi, Yuusuke ^{[1
]}

Tatematsu, Yoshinori ^{[1
]}

Saito, Teruo ^{[1
]}

Ikeda, Ryosuke ^{[1
]}

Mudiganti, Jagadish C. ^{[1
]}

Ogawa, Isamu ^{[1
]}

Idehara, Toshitaka ^{[1
]}

机构：

[1] Research Center for Development of Far-Infrared Region, University of Fukui

来源：

Yamaguchi, Y. (y-yama@fir.u-fukui.ac.jp) | 2012年 / Japan Society of Plasma Science and Nuclear Fusion Research卷 / 07期

基金：

日本学术振兴会;

关键词：

Gyrotron; Laminar flow; Magnetron-injection gun; Space charge effect; Velocity spread;

D O I：

10.1585/pfr.7.1205004

中图分类号：

学科分类号：

摘要：

This paper describes the design of a magnetron-injection gun for a 100kW, 300 GHz gyrotron. With an increase in power and frequency, performance of the gyrotron becomes quite sensitive to the quality of the electron beam. Formation of a laminar electron flow is essential for the realization of a high quality beam with small velocity spread. In this study, a new method is proposed for the evaluation of the laminarity, and applied to the design optimization of the electrodes. It is found that the laminarity depends not only on the conventional design parameter of the cathode slant angle, but also on the spatial distribution of the electric field inside the beam © 2012 The Japan Society of Plasma Science and Nuclear Fusion Research.

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