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Chin. Phys. B, 2011, Vol. 20(5): 055201    DOI: 10.1088/1674-1056/20/5/055201
PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES Prev   Next  

Observation of chaotic ELMs in HL-2A tokamak

Huang Yuan(黄渊), Nie Lin(聂林), Yu De-Liang(余德良), Liu Chun-Hua(刘春华), Feng Zhen(冯震), and Duan Xu-Ru(段旭如)
Southwestern Institute of Physics, Chengdu 610041, China
Abstract  The high confinement mode (H-mode) operation is recently obtained in HL-2A divertor configuration, the corresponding edge localized mode (ELM) is recognized as being of type III. Time intervals in ELM time series are analysed to obtain the information about the ELM process. Signatures of unstable periodic orbits (UPOs) are detected, which are indicators of chaos and may be used to control the big ELM events.
Keywords:  tokamak plasma      plasma confinement      edge localized modes      chaotic systems  
Received:  13 September 2010      Revised:  20 November 2010      Accepted manuscript online: 
PACS:  52.25.Gj (Fluctuation and chaos phenomena)  
  52.35.Py (Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.))  
  52.40.Hf (Plasma-material interactions; boundary layer effects)  
  52.55.Fa (Tokamaks, spherical tokamaks)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10990213).

Cite this article: 

Huang Yuan(黄渊), Nie Lin(聂林), Yu De-Liang(余德良), Liu Chun-Hua(刘春华), Feng Zhen(冯震), and Duan Xu-Ru(段旭如) Observation of chaotic ELMs in HL-2A tokamak 2011 Chin. Phys. B 20 055201

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