High-β, improved confinement reversed-field pinch plasmas at high density

被引：15

作者：

Wyman, M. D. ^{[1
]}

Chapman, B. E. ^{[1
]}

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

Almagri, A. F. ^{[1
]}

Anderson, J. K. ^{[1
]}

Bonomo, F. ^{[2
]}

Brower, D. L. ^{[3
]}

Combs, S. K. ^{[4
]}

Craig, D. ^{[1
,5
]}

Den Hartog, D. J. ^{[1
]}

Deng, B. H. ^{[3
]}

Ding, W. X. ^{[3
]}

Ebrahimi, F. ^{[1
]}

Ennis, D. A. ^{[1
]}

Fiksel, G. ^{[1
]}

Foust, C. R. ^{[4
]}

Franz, P. ^{[2
]}

Gangadhara, S. ^{[1
]}

Goetz, J. A. ^{[1
]}

O'Connell, R. ^{[1
]}

Oliva, S. P. ^{[1
]}

Prager, S. C. ^{[1
]}

Reusch, J. A. ^{[1
]}

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

Stephens, H. D. ^{[1
]}

Yates, T. ^{[3
]}

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[2] Consorzio RFX, Corso Stati Uniti 4, I-35127 Padua, Italy

[3] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[4] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[5] Wheaton Coll, Wheaton, IL 60187 USA

来源：

PHYSICS OF PLASMAS | 2008年 / 15卷 / 01期

关键词：

D O I：

10.1063/1.2835439

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：

In Madison Symmetric Torus [Dexter , Fusion Technol. 19, 131 (1991)] discharges where improved confinement is brought about by modification of the current profile, pellet injection has quadrupled the density, reaching n(e)=4x10(19) m(-3). Without pellet injection, the achievable density in improved confinement discharges had been limited by edge-resonant tearing instability. With pellet injection, the total beta has been increased to 26%, and the energy confinement time is comparable to that at low density. Pressure-driven local interchange and global tearing are predicted to be linearly unstable. Interchange has not yet been observed experimentally, but there is possible evidence of pressure-driven tearing, an instability usually driven by the current gradient in the reversed-field pinch. (c) 2008 American Institute of Physics.

引用

页数：4

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