| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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First Observation of Neoclassical Tearing Modes in the HL-2A Tokamak |
JI Xiao-Quan, YANG Qing-Wei, LIU Yi, ZHOU Jun, FENG Bei-Bin, YUAN Bao-Shan |
| Southwestern Institute of Physics, Chengdu 610041 |
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| Cite this article: |
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JI Xiao-Quan, YANG Qing-Wei, LIU Yi et al 2010 Chin. Phys. Lett. 27 065202 |
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Abstract The m/n=2/1 neoclassical tearing modes are first observed in HL-2A low density, low beta plasma with central electron cyclotron resonance heating. The neoclassical tearing modes (NTMs) are triggered by a sawtooth crash with m/n=1/1 precursors, which are toroidal coupled with a small scale m/n=2/1 mode. The time history of the island width is compared with the prediction of the NTM theory, showing a good agreement between theory and experiment.
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| Keywords:
52.55.Fa
52.70.Ds
52.35.Py
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Received: 20 November 2009
Published: 25 May 2010
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| PACS: |
52.55.Fa
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(Tokamaks, spherical tokamaks)
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52.70.Ds
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(Electric and magnetic measurements)
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52.35.Py
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(Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.))
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