Sustained stabilization of the resistive-wall mode by plasma rotation in the DIII-D tokamak

被引：119

作者：

Garofalo, AM

Strait, EJ

Johnson, LC

La Haye, RJ

Lazarus, EA

Navratil, GA

Okabayashi, M

Scoville, JT

Taylor, TS

Turnbull, AD

机构：

[1] Gen Atom Co, San Diego, CA 92186 USA

[2] Columbia Univ, New York, NY USA

[3] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[4] Oak Ridge Natl Lab, Oak Ridge, TN USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.89.235001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Values of the normalized plasma pressure up to twice the free-boundary stability limit predicted by ideal magnetohydrodynamic (MHD) theory have been sustained in the DIII-D tokamak. Long-wavelength modes are stabilized by the resistive wall and rapid plasma toroidal rotation. High rotation speed is maintained by minimization of nonaxisymmetric magnetic fields, overcoming a long-standing impediment [E. J. Strait et al., Phys. Rev. Lett. 74, 2483 (1995)]. The ideal-MHD pressure limit calculated with an ideal wall is observed as the operational limit to the normalized plasma pressure.

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