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Chin. Phys. B, 2009, Vol. 18(3): 1172-1176    DOI: 10.1088/1674-1056/18/3/055
PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES Prev   Next  

Observation of poloidal current flowed to the vessel after failure of vertical position feedback control in EAST Tokamak

Qian Jin-Ping(钱金平)a†), Wan Bao-Nian(万宝年)a), Shen Biao(沈飙)a), L. L. Laob), Xiao Bing-Jia(肖炳甲)a), Li Jian-Gang(李建刚)a), Lin Shi-Yao(林士耀)a), and Luo Zheng-Ping(罗正平)a)
a Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China; b General Atomics, San Diego, California, USA
Abstract  Plasmas with vertically elongated cross-sections tend to be unstable to an axis-symmetric instability. This paper studies the magnetohydrodynamic equilibria in elongated plasmas after failure of vertical feedback control by using magnetic data for EAST device. Vertical forces on the vessel due to the induced polodial and toroidal currents are evaluated. The maximum force of the Fzpol in vertical displacement events for EAST designed parameters is given.
Keywords:  equilibrium reconstruction      vertical stability      scrape-off layer  
Received:  26 March 2008      Revised:  10 July 2008      Accepted manuscript online: 
PACS:  52.55.Fa (Tokamaks, spherical tokamaks)  
  52.35.Py (Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.))  
  28.52.Av (Theory, design, and computerized simulation)  
  52.40.Hf (Plasma-material interactions; boundary layer effects)  
  52.30.Cv (Magnetohydrodynamics (including electron magnetohydrodynamics))  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10725523) and the Ministry of Science and Technology of China (Grant No 2007DFA11290).

Cite this article: 

Qian Jin-Ping(钱金平), Wan Bao-Nian(万宝年), Shen Biao(沈飙), L. L. Lao, Xiao Bing-Jia(肖炳甲), Li Jian-Gang(李建刚), Lin Shi-Yao(林士耀), and Luo Zheng-Ping(罗正平) Observation of poloidal current flowed to the vessel after failure of vertical position feedback control in EAST Tokamak 2009 Chin. Phys. B 18 1172

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