Comparison of m=2, n=1 neo-classical tearing mode limits in JET and DIII-D

被引：36

作者：

Hender, TC ^{[1
]}

Howell, DF

Buttery, RJ

Sauter, O

Sartori, F

La Haye, RJ

Hyatt, AW

Petty, CC

机构：

[1] UKAEA, Fus Assoc, EURATOM, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[2] Ecole Polytech Fed Lausanne, Ctr Rech Phys Plasmas, Assoc Euratom Confederat Suisse, CH-1015 Lausanne, Switzerland

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

来源：

NUCLEAR FUSION | 2004年 / 44卷 / 07期

关键词：

D O I：

10.1088/0029-5515/44/7/010

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：

Joint experiments have been conducted on JET and DIII-D to study m = 2, n = I neo-classical tearing modes (NTMs). Very similar instability behaviour is observed on both machines and the scaling of the mode island width with beta and the observation of n = I islands at q = 2, strongly points to these modes being driven by neo-classical effects. Identity experiments using closely matched non-dimensional parameters (plasma shape, aspect ratio, q, p* and collisionality) on JET and DIII-D show similar global beta-limits for the NTM. Further scalings, which combine broader data sets from JET and DIII-D, show an approximately linear scaling, or slightly stronger, with ion gyro-radius and a relatively weak dependence on collisionality.

引用

页码：788 / 794

页数：7

共 47 条

[1] Study of a low β classical tearing mode in DIII-D
Chu, MS
La Haye, RJ
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Lazarus, EA
Pletzer, A
Ren, C
Strait, EJ
Taylor, TS
Waelbroeck, FL
PHYSICS OF PLASMAS, 2002, 9 (11) : 4584 - 4590
[2] The influence of rotation on the βN threshold for the 2/1 neoclassical tearing mode in DIII-D
Buttery, R. J.
La Haye, R. J.
Gohil, P.
Jackson, G. L.
Reimerdes, H.
Strait, E. J.
PHYSICS OF PLASMAS, 2008, 15 (05)
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La Haye, R. J.
Politzer, Pa.
Brennan, D. P.
NUCLEAR FUSION, 2008, 48 (01)
[4] Complete suppression of the m=2/n=1 neoclassical tearing mode using electron cyclotron current drive in DIII-D
Petty, CC
La Haye, RJ
Luce, TC
Humphreys, DA
Hyatt, AW
Lohr, J
Prater, R
Strait, EJ
Wade, MR
NUCLEAR FUSION, 2004, 44 (02) : 243 - 251
[5] Stabilization and prevention of the 2/1 neoclassical tearing mode for improved performance in DIII-D
Prater, R.
La Haye, R. J.
Luce, T. C.
Petty, C. C.
Strait, E. J.
Ferron, J. R.
Humphreys, D. A.
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Lohr, J.
Nagasaki, K.
Politzer, P. A.
Wade, M. R.
Welander, A. S.
NUCLEAR FUSION, 2007, 47 (05) : 371 - 377
[6] Empirical probability and machine learning analysis of m, n=2, 1 tearing mode onset parameter dependence in DIII-D H-mode scenarios
Bardoczi, L.
Richner, N. J.
Zhu, J.
Rea, C.
Logan, N. C.
PHYSICS OF PLASMAS, 2023, 30 (09)
[7] The onset distribution of rotating m,n=2,1 tearing modes and its consequences on the stability of high-confinement-mode plasmas in DIII-D
Bardoczi, L.
Richner, N. J.
Logan, N. C.
NUCLEAR FUSION, 2023, 63 (12)
[8] Comparison of L-mode regimes with enhanced confinement by impurity seeding in JET and DIII-D
Jackson, GL
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von Hellerman, M
Wade, MR
PLASMA PHYSICS AND CONTROLLED FUSION, 2002, 44 (09) : 1893 - 1902
[9] Complete suppression of the m=2/n=l NTM using ECCD on DIII-D
Petty, CC
La Haye, RJ
Luce, TC
Austin, ME
Harvey, RW
Humphreys, DA
Lohr, J
Prater, R
Wade, MR
RADIO FREQUENCY POWER IN PLASMAS, 2003, 694 : 348 - 351
[10] Direct preemptive stabilization of m, n=2, 1 neoclassical tearing modes by electron cyclotron current drive in the DIII-D low-torque ITER baseline scenario
Bardoczi, L.
La Haye, R. J.
Strait, E. J.
Logan, N. C.
Smith, S. P.
Richner, N. J.
Callen, J. D.
NUCLEAR FUSION, 2023, 63 (09)

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