Observation of Self-Generated Flows in Tokamak Plasmas with Lower-Hybrid-Driven Current

被引：62

作者：

Ince-Cushman, A. ^{[1
]}

Rice, J. E. ^{[1
]}

Reinke, M. ^{[1
]}

Greenwald, M. ^{[1
]}

Wallace, G. ^{[1
]}

Parker, R. ^{[1
]}

Fiore, C. ^{[1
]}

Hughes, J. W. ^{[1
]}

Bonoli, P. ^{[1
]}

Shiraiwa, S. ^{[1
]}

Hubbard, A. ^{[1
]}

Wolfe, S. ^{[1
]}

Hutchinson, I. H. ^{[1
]}

Marmar, E. ^{[1
]}

Bitter, M. ^{[2
]}

Wilson, J. ^{[2
]}

Hill, K. ^{[2
]}

机构：

[1] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA

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

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 03期

关键词：

ALCATOR C-MOD; TOROIDAL ROTATION; STABILIZATION; PARTICLE; WAVES; PINCH; ITER;

D O I：

10.1103/PhysRevLett.102.035002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In Alcator C-Mod discharges lower hybrid waves have been shown to induce a countercurrent change in toroidal rotation of up to 60 km/s in the central region of the plasma (r/a similar to < 0.4). This modification of the toroidal rotation profile develops on a time scale comparable to the current redistribution time (similar to 100 ms) but longer than the energy and momentum confinement times (similar to 20 ms). A comparison of the co- and countercurrent injected waves indicates that current drive (as opposed to heating) is responsible for the rotation profile modifications. Furthermore, the changes in central rotation velocity induced by lower hybrid current drive (LHCD) are well correlated with changes in normalized internal inductance. The application of LHCD has been shown to generate sheared rotation profiles and a negative increment in the radial electric field profile consistent with a fast electron pinch.

引用

页数：4

共 19 条

[1] STABILITY ANALYSIS OF RESISTIVE WALL KINK MODES IN ROTATING PLASMAS [J].