ELM destabilization by externally applied non-axisymmetric magnetic perturbations in NSTX

被引：70

作者：

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

Maingi, R. ^{[1
]}

Evans, T. E. ^{[2
]}

Bell, R. E. ^{[3
]}

Gerhardt, S. P. ^{[3
]}

Kugel, H. W. ^{[3
]}

LeBlanc, B. P. ^{[3
]}

Manickam, J. ^{[3
]}

Menard, J. E. ^{[3
]}

Osborne, T. H. ^{[2
]}

Park, J. -K. ^{[3
]}

Paul, S. ^{[3
]}

Snyder, P. B. ^{[2
]}

Sabbagh, S. A. ^{[4
]}

Unterberg, E. A. ^{[5
]}

机构：

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

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

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

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

[5] Oak Ridge Inst Sci & Educ, Oak Ridge, TN 37831 USA

来源：

NUCLEAR FUSION | 2010年 / 50卷 / 03期

关键词：

EDGE-LOCALIZED MODES; SPHERICAL TORUS EXPERIMENT; STEADY-STATE; CONFINEMENT; PEDESTAL; TOKAMAK; PLASMA; TRANSPORT; FIELD;

D O I：

10.1088/0029-5515/50/3/034012

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：

We report on a recent set of experiments performed in NSTX to explore the effects of non-axisymmetric magnetic perturbations on the stability of edge-localized modes (ELMs). The application of these 3D fields in NSTX was found to have a strong effect on ELM stability, including the destabilization of ELMs in H-modes otherwise free of large ELMs. Exploiting the effect of the perturbations, ELMs have been controllably introduced into lithium-enhanced ELM-free H-modes, causing a reduction in impurity accumulation while maintaining high confinement. Although these experiments show the principle of the combined use of lithium coatings and 3D fields, further optimization is required in order to reduce the size of the induced ELMs.

引用

页数：8

共 44 条

[1] Edge localized modes control:: experiment and theory [J].

Becoulet, M ;

Huysmans, G ;

Thomas, P ;

Joffrin, E ;

Rimini, F ;

Monier-Garbet, P ;

Grosman, A ;

Ghendrih, P ;

Parail, V ;

Lomas, P ;

Matthews, G ;

Wilson, H ;

Gryaznevich, M ;

Counsell, G ;

Loarte, A ;

Saibene, G ;

Sartori, R ;

Leonard, A ;

Snyder, P ;

Evans, T ;

Gohil, P ;

Moyer, R ;

Kamada, Y ;

Oyama, N ;

Hatae, T ;

Kamiya, K ;

Degeling, A ;

Martin, Y ;

Lister, J ;

Rapp, J ;

Perez, C ;

Lang, P ;

Chankin, A ;

Eich, T ;

Sips, A ;

Stober, J ;

Horton, L ;

Kallenbach, A ;

Suttrop, W ;

Saarelma, S ;

Cowley, S ;

Lönnroth, J ;

Shimada, M ;

Polevoi, A ;

Federici, G .

JOURNAL OF NUCLEAR MATERIALS, 2005, 337 (1-3) :677-683

[2] Quiescent double barrier high-confinement mode plasmas in the DIII-D tokamak [J].

Burrell, KH ;

Austin, ME ;

Brennan, DP ;

DeBoo, JC ;

Doyle, EJ ;

Fenzi, C ;

Fuchs, C ;

Gohil, P ;

Greenfield, CM ;

Groebner, RJ ;

Lao, LL ;

Luce, TC ;

Makowski, MA ;

McKee, GR ;

Moyer, RA ;

Petty, CC ;

Porkolab, M ;

Rettig, CL ;

Rhodes, TL ;

Rost, JC ;

Stallard, BW ;

Strait, EJ ;

Synakowski, EJ ;

Wade, MR ;

Watkins, JG ;

West, WP .

PHYSICS OF PLASMAS, 2001, 8 (05) :2153-2162

[3] UNIVERSAL INSTABILITY OF MANY-DIMENSIONAL OSCILLATOR SYSTEMS [J].

CHIRIKOV, BV .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1979, 52 (05) :263-379

[4] Magnetic triggering of ELMs in TCV [J].

Degeling, AW ;

Martin, YR ;

Lister, JB ;

Villard, L ;

Dokouka, VN ;

Lukash, VE ;

Khayrutdinov, RR .

PLASMA PHYSICS AND CONTROLLED FUSION, 2003, 45 (09) :1637-1655

[5] A conceptual model of the magnetic topology and nonlinear dynamics of ELMS [J].

Evans, T. E. ;

Yu, J. H. ;

Jakubowski, M. W. ;

Schmitz, O. ;

Watkins, J. G. ;

Moyer, R. A. .

JOURNAL OF NUCLEAR MATERIALS, 2009, 390-91 :789-792

[6] RMP ELM suppression in DIII-D plasmas with ITER similar shapes and collisionalities [J].

Evans, T. E. ;

Fenstermacher, M. E. ;

Moyer, R. A. ;

Osborne, T. H. ;

Watkins, J. G. ;

Gohil, P. ;

Joseph, I. ;

Schaffer, M. J. ;

Baylor, L. R. ;

Becoulet, M. ;

Boedo, J. A. ;

Burrell, K. H. ;

deGrassie, J. S. ;

Finken, K. H. ;

Jernigan, T. ;

Jakubowski, M. W. ;

Lasnier, C. J. ;

Lelmen, M. ;

Leonard, A. W. ;

Lonnroth, J. ;

Nardon, E. ;

Parail, V. ;

Schmitz, O. ;

Unterberg, B. ;

West, W. P. .

NUCLEAR FUSION, 2008, 48 (02)

[7] Suppression of large edge-localized modes in high-confinement DIII-D plasmas with a stochastic magnetic boundary [J].

Evans, TE ;

Moyer, RA ;

Thomas, PR ;

Watkins, JG ;

Osborne, TH ;

Boedo, JA ;

Doyle, EJ ;

Fenstermacher, ME ;

Finken, KH ;

Groebner, RJ ;

Groth, M ;

Harris, JH ;

La Haye, RJ ;

Lasnier, CJ ;

Masuzaki, S ;

Ohyabu, N ;

Pretty, DG ;

Rhodes, TL ;

Reimerdes, H ;

Rudakov, DL ;

Schaffer, MJ ;

Wang, G ;

Zeng, L .

PHYSICAL REVIEW LETTERS, 2004, 92 (23) :235003-1

[8] MAGNETIC PERTURBATION EFFECTS ON BOUNDARY PLASMAS DURING HIGH-POWER LOWER HYBRID CURRENT DRIVE IN TORE SUPRA [J].

EVANS, TE ;

GONICHE, M ;

GROSMAN, A ;

GUILHEM, D ;

HESS, W ;

VALLET, JC .

JOURNAL OF NUCLEAR MATERIALS, 1992, 196 :421-425

[9] Effect of island overlap on edge localized mode suppression by resonant magnetic perturbations in DIII-D [J].

Fenstermacher, M. E. ;

Evans, T. E. ;

Osborne, T. H. ;

Schaffer, M. J. ;

Aldan, M. P. ;

deGrassie, J. S. ;

Gohil, P. ;

Joseph, I. ;

Moyer, R. A. ;

Snyder, P. B. ;

Groebner, R. J. ;

Jakubowski, M. ;

Leonard, A. W. ;

Schmitz, O. .

PHYSICS OF PLASMAS, 2008, 15 (05)

[10]

Fielding S.J., 2001, Proc. 28th EPS Conf. on Plasma Physics and Controlied Fusion, V25A, P1825

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