Global stability study of the ultralow aspect ratio tokamak, ULART

被引：13

作者：

Yamada, M ^{[1
]}

Pomphrey, N ^{[1
]}

Ono, Y ^{[1
]}

Katsurai, M ^{[1
]}

机构：

[1] UNIV TOKYO,DEPT ELECT ENGN,TOKYO 113,JAPAN

来源：

NUCLEAR FUSION | 1996年 / 36卷 / 09期

关键词：

D O I：

10.1088/0029-5515/36/9/I10

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：

By introducing a slender current carrying conductor through the geometric centre axis of the TS-3 device at Tokyo Univesity, ultralow aspect ratio tokamak (ULART) configurations have been generated with aspect ratios as low as 1.1. In this extreme limit the transition of the spheromak (q(edge) = 0, I-1f = 0) to an ULART plasma (q(edge) = 2-20) is studied. The global MHD characteristics of ULART are investigated by comparing the theoretical results viith the experimental data obtained. A small current (compared with the plasma current) in the centre conductor is found to improve significantly the global MHD stability characteristics of the plasmas formed by effectively stabilizing the global tilt/shift mode. Theoretical calculations of the threshold toroidal field current required for stability and the growth rates of the tilt/shift modes agree well with the TS-3 data.

引用

页码：1210 / 1216

页数：7

共 17 条

[1] INJECTION AND SUSTAINMENT OF PLASMA IN A PREEXISTING TOROIDAL FIELD USING A COAXIAL HELICITY SOURCE [J].