Identification of a low plasma-rotation threshold for stabilization of the resistive-wall mode

被引：122

作者：

Takechi, M. ^{[1
]}

Matsunaga, G. ^{[1
]}

Aiba, N. ^{[1
]}

Fujita, T. ^{[1
]}

Ozeki, T. ^{[1
]}

Koide, Y. ^{[1
]}

Sakamoto, Y. ^{[1
]}

Kurita, G. ^{[1
]}

Isayama, A. ^{[1
]}

Kamada, Y. ^{[1
]}

机构：

[1] Japan Atom Energy Agcy, Naka, Ibaraki 3110193, Japan

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.98.055002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The plasma rotation necessary for stabilization of resistive-wall modes (RWMs) is investigated by controlling the toroidal plasma rotation with external momentum input by injection of tangential neutral beams. The observed threshold is 0.3% of the Alfven velocity and much smaller than the previous experimental results obtained with magnetic braking. This low critical rotation has a very weak 8 dependence as the ideal wall limit is approached. These results indicate that for large plasmas such as in future fusion reactors with low rotation, the requirement of the additional feedback control system for stabilizing RWM is much reduced.

引用

页数：4

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