Experiments on neoclassical tearing mode stabilization by ECCD in ASDEX Upgrade

被引:185
作者
Zohm, H [1 ]
Gantenbein, G
Giruzzi, G
Günter, S
Leuterer, F
Maraschek, M
Meskat, J
Peeters, AG
Suttrop, W
Wagner, D
Zabiégo, M
机构
[1] Inst Plasmaforsch, Stuttgart, Germany
[2] Ctr Etud Nucl Cadarache, CEA, EURATOM Assoc, St Paul Durance, France
[3] EURATOM Assoc, Max Planck Inst Plasmaphys, Garching, Germany
关键词
D O I
10.1088/0029-5515/39/5/101
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
The reduction of neoclassical tearing modes by ECCD is demonstrated experimentally. It is shown that with an averaged ECCD power of only 4-8% of the total heating power injected into the discharge, the island width can be reduced ly 40%; provided that the centre of deposition is very close to the resonant surface. The reduction in mode amplitude results in a partial recovery of the loss of stored energy induced by the mode. This experimental result is well reproduced by modelling calculations.
引用
收藏
页码:577 / 580
页数:4
相关论文
共 10 条
[1]   TRANSPORT EFFECTS OF LOW (M,N) MHD MODES ON TFTR SUPERSHOTS [J].
CHANG, Z ;
FREDRICKSON, ED ;
CALLEN, JD ;
MCGUIRE, KM ;
BELL, MG ;
BUDNY, RV ;
BUSH, CE ;
DARROW, DS ;
JANOS, AC ;
JOHNSON, LC ;
PARK, HK ;
SCOTT, SD ;
STRACHAN, JD ;
SYNAKOWSKI, EJ ;
TAYLOR, G ;
WIELAND, RM ;
ZARNSTORFF, MC ;
ZWEBEN, SJ .
NUCLEAR FUSION, 1994, 34 (10) :1309-1336
[2]   OBSERVATION OF NONLINEAR NEOCLASSICAL PRESSURE-GRADIENT-DRIVEN TEARING MODES IN TFTR [J].
CHANG, Z ;
CALLEN, JD ;
FREDRICKSON, ED ;
BUDNY, RV ;
HEGNA, CC ;
MCGUIRE, KM ;
ZARNSTORFF, MC .
PHYSICAL REVIEW LETTERS, 1995, 74 (23) :4663-4666
[3]   Dynamical modelling of tearing mode stabilization by RF current drive [J].
Giruzzi, G ;
Zabiégo, M ;
Gianakon, TA ;
Garbet, X ;
Cardinali, A ;
Bernabei, S .
NUCLEAR FUSION, 1999, 39 (01) :107-125
[4]   On the stabilization of neoclassical magnetohydrodynamic tearing modes using localized current drive or heating [J].
Hegna, CC ;
Callen, JD .
PHYSICS OF PLASMAS, 1997, 4 (08) :2940-2946
[5]  
KRITZ AH, 1982, 3RD P JOINT VAR GREN, V2, P707
[6]   Overview of ECRH experimental results [J].
Lloyd, B .
PLASMA PHYSICS AND CONTROLLED FUSION, 1998, 40 :A119-A138
[7]   MHD INSTABILITY CONTROL, DISRUPTIONS, AND ERROR FIELDS IN TOKAMAKS [J].
MORRIS, AW .
PLASMA PHYSICS AND CONTROLLED FUSION, 1992, 34 (13) :1871-1879
[8]  
TERUMICHI Y, 1995, P 15 INT C PLASM PHY, V2, P189
[9]   Stabilization of neoclassical tearing modes by electron cyclotron current drive [J].
Zohm, H .
PHYSICS OF PLASMAS, 1997, 4 (09) :3433-3435
[10]   Neoclassical MHD in ASDEX upgrade and COMPASS-D [J].
Zohm, H ;
Gates, DA ;
Wilson, HR ;
Gantenbein, G ;
Gruber, O ;
Gunter, S ;
Maraschek, M ;
Morris, AW ;
Sokoll, M ;
Wagner, D .
PLASMA PHYSICS AND CONTROLLED FUSION, 1997, 39 :B237-B246