Observation of Plasma Rotation Driven by Static Nonaxisymmetric Magnetic Fields in a Tokamak

被引：145

作者：

Garofalo, A. M. ^{[1
]}

Burrell, K. H. ^{[1
]}

DeBoo, J. C. ^{[1
]}

deGrassie, J. S. ^{[1
]}

Jackson, G. L. ^{[1
]}

Lanctot, M. ^{[2
]}

Reimerdes, H. ^{[2
]}

Schaffer, M. J. ^{[1
]}

Solomon, W. M. ^{[3
]}

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

机构：

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

[2] Columbia Univ, New York, NY 10027 USA

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

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.101.195005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first evidence for the existence of a neoclassical toroidal rotation driven in a direction counter to the plasma current by nonaxisymmetric, nonresonant magnetic fields. At high beta and with large injected neutral beam momentum, the nonresonant field torque slows down the plasma toward the neoclassical "offset" rotation rate. With small injected neutral beam momentum, the toroidal rotation is accelerated toward the offset rotation, with resulting improvement in the global energy confinement time. The observed magnitude, direction, and radial profile of the offset rotation are consistent with neoclassical theory predictions [A. J. Cole , Phys. Rev. Lett. 99, 065001 (2007)].

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页数：4

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