Tearing-mode natural frequency behaviour under mode-locking in T-10 tokamak

被引:3
作者
Chudnovskiy, AN [1 ]
Ivanov, NV [1 ]
Kakurin, AM [1 ]
Orlovskiy, II [1 ]
Volkov, VV [1 ]
机构
[1] Kurchatov Inst, Russian Res Ctr, Nucl Fus Inst, Moscow, Russia
关键词
D O I
10.1088/0029-5515/44/2/009
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 results of the m = 2, n = 1 tearing mode natural frequency measurements in the course of the mode-locking by a controlled halo-current are presented. The halo-current in the rail limiter-plasma-vacuum vessel-external circuit with a controlled EMF source-rail limiter loop was used. The halo-current represented a superposition of a direct-current pulse for the mode-locking and an oscillating-cuffent component for the natural frequency measurements by the resonant response of the mode. In the experiment, the mode signal oscillations at the frequency of the halo-current oscillating component were observed even if the mode rotation stopped under the pulse of the halo-current. The maximum amplitude of these mode oscillations was achieved when the frequency of the halo-current oscillating component was equal to the frequency of the mode before switching on the halo-current. It means that under the conditions of the T-10 experiment, there was no variation of the mode natural frequency upon termination of the mode rotation by the halo-current. This mode behaviour can be attributed to the well-known effect of frequency locking in an externally driven non-linear oscillator. The experiment was simulated with a model of a rotating non-linear tearing mode in the presence of the halo-current.
引用
收藏
页码:287 / 289
页数:3
相关论文
共 7 条
  • [1] MHD-mode locking by controlled a halo-current in the T-10 tokamak
    Chudnovskiy, AN
    Gvozdkov, Y
    Ivanov, NV
    Kakurin, AM
    Medvedev, AA
    Orlovskiy, II
    Pavlov, YD
    Piterskiy, VV
    Pustovitov, VD
    Safonova, MB
    Volkov, V
    [J]. NUCLEAR FUSION, 2003, 43 (08) : 681 - 685
  • [2] Ivanov N. V., 1979, Fizika Plazmy, V5, P969
  • [3] Ivanov N. V., 1979, SOV J PLASMA PHYS, V5, P541
  • [4] IVANOV NV, 2001, P 218 INT C FUS EN 2
  • [5] IVANOV NV, 2002, P 19 INT C FUS EN 20
  • [6] NONLINEAR GROWTH OF TEARING MODE
    RUTHERFORD, PH
    [J]. PHYSICS OF FLUIDS, 1973, 16 (11) : 1903 - 1908
  • [7] SATURATION OF TEARING MODE
    WHITE, RB
    MONTICELLO, DA
    ROSENBLUTH, MN
    WADDELL, BV
    [J]. PHYSICS OF FLUIDS, 1977, 20 (05) : 800 - 805