Characterization of peeling modes in a low aspect ratio tokamak
作者: M.W. BongardK.E. ThomeJ.L. BarrM.G. BurkeR.J. FonckE.T. HinsonA.J. ReddD.J. Schlossberg
作者单位: 1Department of Engineering Physics, University of Wisconsin-Madison, 1500 Engineering Drive, Madison, WI 53706, USA
刊名: Nuclear Fusion, 2014, Vol.54 (11)
来源数据库: Institute of Physics Journal
DOI: 10.1088/0029-5515/54/11/114008
原始语种摘要: Peeling modes are observed at the plasma edge in the Pegasus Toroidal Experiment under conditions of high edge current density ( J edge ∼ 0.1 MA m−2) and low magnetic field ( B ∼ 0.1 T) present at near-unity aspect ratio. Their macroscopic properties are measured using external Mirnov coil arrays, Langmuir probes and high-speed visible imaging. The modest edge parameters and short pulse lengths of Pegasus discharges permit direct measurement of the internal magnetic field structure with an insertable array of Hall-effect sensors, providing the current profile and its temporal evolution. Peeling modes generate coherent, edge-localized electromagnetic activity with low toroidal mode numbers n ⩽ 3 and high poloidal mode numbers, in agreement with theoretical...
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  • modes 模式
  • expectations 期待的事物
  • peeling 去皮
  • external 外部的
  • equilibrium 平衡
  • aspect 季相
  • analytic 解析的
  • criterion 准则
  • tokamak 托卡马克
  • agreement 协议