Higher stable beta by use of pre-emptive electron cyclotron current drive on DIII-D

被引：31

作者：

La Haye, RJ

Humphreys, DA

Ferron, JR

Luce, TC

Perkins, FW

Petty, CC

Prater, R

Strait, EJ

Welander, AS

机构：

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

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

来源：

NUCLEAR FUSION | 2005年 / 45卷 / 11期

关键词：

D O I：

10.1088/0029-5515/45/11/L02

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：

Electron cyclotron current drive (ECCD) is used in conjunction with accurate real-time equilibrium reconstructions to operate a tokamak plasma at high beta without the destabilization of a performance-degrading neoclassical tearing mode that otherwise is metastable and therefore appears consistently. This is the first experiment in which the alignment of the ECCD on the rational surface being stabilized is maintained in the absence of the mode. Driving current at the rational surface eliminates the metastable condition, thereby making the mode stable.

引用

收藏

页码：L37 / L41

页数：5

相关论文

共 22 条

[1] Tearing mode stability studies near ideal stability boundaries in DIII-D [J].

Brennan, DP ;

Strait, EJ ;

Turnbull, AD ;

Chu, MS ;

La Haye, RJ ;

Luce, TC ;

Taylor, TS ;

Kruger, S ;

Pletzer, A .

PHYSICS OF PLASMAS, 2002, 9 (07) :2998-3006

[2] On the form of NTM onset scalings [J].

Buttery, RJ ;

Hender, TC ;

Howell, DF ;

La Haye, RJ ;

Parris, S ;

Sauter, O ;

Windsor, CG .

NUCLEAR FUSION, 2004, 44 (05) :678-685

[3] GLOBAL ENERGY CONFINEMENT DEGRADATION DUE TO MACROSCOPIC PHENOMENA IN TOKAMAKS [J].

CHANG, Z ;

CALLEN, JD .

NUCLEAR FUSION, 1990, 30 (02) :219-233

[4] Real time equilibrium reconstruction for tokamak discharge control [J].

Ferron, JR ;

Walker, ML ;

Lag, LL ;

St John, HE ;

Humphreys, DA ;

Leuer, JA .

NUCLEAR FUSION, 1998, 38 (07) :1055-1066

[5] Complete suppression of neoclassical tearing modes with current drive at the electron-cyclotron-resonance frequency in ASDEX upgrade tokamak [J].

Gantenbein, G ;

Zohm, H ;

Giruzzi, G ;

Günter, S ;

Leuterer, F ;

Maraschek, M ;

Meskat, J ;

Yu, Q .

PHYSICAL REVIEW LETTERS, 2000, 85 (06) :1242-1245

[6]

Günter S, 1999, PLASMA PHYS CONTR F, V41, P767, DOI 10.1088/0741-3335/41/6/306

[7] FORCED MAGNETIC RECONNECTION [J].

HAHM, TS ;

KULSRUD, RM .

PHYSICS OF FLUIDS, 1985, 28 (08) :2412-2418

[8] Complete stabilization of a tearing mode in steady state high-βp H-mode discharges by the first harmonic electron cyclotron heating/current drive on JT-60U [J].

Isayama, A ;

Kamada, Y ;

Ide, S ;

Hamamatsu, K ;

Oikawa, T ;

Suzuki, T ;

Neyatani, Y ;

Ozeki, T ;

Ikeda, Y ;

Kajiwara, K .

PLASMA PHYSICS AND CONTROLLED FUSION, 2000, 42 (12) :L37-L45

[9]

JOHN H. E. ST., 1995, PLASMA PHYS CONTROLL, V3, P603

[10] Control of neoclassical tearing modes in DIII-D [J].

La Haye, RJ ;

Günter, S ;

Humphreys, DA ;

Lohr, J ;

Luce, TC ;

Maraschek, ME ;

Petty, CC ;

Prater, R ;

Scoville, JT ;

Strait, EJ .

PHYSICS OF PLASMAS, 2002, 9 (05) :2051-2060