A novel approach for mitigating disruptions using biased electrode in Aditya tokamak
作者: Pravesh DhyaniJ. GhoshP.K. ChattopadhyayR.L. TannaD. RajuS. JoisaAsim Kumar ChattopadhyayDebjyoti BasuN. RamaiyaS. KumarK. SathyanarayanaS.B. BhattP.K. AtreyC.N. GuptaC.V.S. RaoRatneshwar JhaY.C. SaxenaR. Pal
作者单位: 1Institute for Plasma Research, Bhat, Gandhinagar 382428, India
2Saha Institute of Nuclear Physics, Kolkata, India
刊名: Nuclear Fusion, 2014, Vol.54 (8)
来源数据库: Institute of Physics Journal
DOI: 10.1088/0029-5515/54/8/083023
原始语种摘要: Disruptions, induced in Aditya tokamak by hydrogen gas puffing, are successfully mitigated through stabilization of magnetohydrodynamic (MHD) modes by applying a bias voltage to an electrode placed inside the last-closed flux surface prior to the gas injection. Above a threshold voltage sheared E r × B φ rotation of the plasma generated by the edge biasing leads to substantial reduction in the growth of MHD modes ( m / n = 3/1, 2/1), which causes avoidance of disruptions through prevention of mode overlapping and subsequent ergodization of magnetic field lines.
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关键词翻译
关键词翻译
  • tokamak 托卡马克
  • electrode 电极
  • avoidance 回避
  • rotation 旋转
  • growth 生长
  • voltage 电压
  • modes 模式
  • closed 闭路的
  • threshold 阈值
  • MHD Movable-Head Disc