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Chin. Phys. B, 2016, Vol. 25(4): 045201    DOI: 10.1088/1674-1056/25/4/045201

Numerical analysis of the optimized performance of the electron cyclotron wave system in a HL-2M tokamak

Jing-Chun Li(李景春)1, Xue-Yu Gong(龚学余)1, Jia-Qi Dong(董家齐)2, Jun Wang(王俊)2, Lan Yin(尹岚)3
1 School of Nuclear Science and Technology, University of South China, Hengyang 421001, China;
2 Southwestern Institute of Physics, P O Box 432, Chengdu 610041, China;
3 School of Mathematics and Physics, University of South China, Hengyang 421001, China
Abstract  The capabilities of current drive, neoclassical tearing mode (NTM) stabilization, and sawtooth control are analyzed for the electron-cyclotron wave (ECW) system in a HL-2M tokamak. Better performance of the upper launcher is demonstrated in comparison with that of a dropped upper launcher, in terms of JEC/Jbs for NTM stabilization and IECCD/(Δρtor)2 for sawtooth control. 1-MW ECW power is enough for the 3/2 NTM stabilization, and 1.8-MW ECW power is required to suppress 2/1 NTM in a single null divertor equilibrium with 1.2-MA toroidal current with the upper launcher. Optimization simulation of electron-cyclotron current drive (ECCD) is carried out for three mirrors in an equatorial port, indicating that the middle mirror has a good performance compared with the top and bottom mirrors. The results for balanced co-and counter-ECCD in an equatorial port are also presented.
Keywords:  HL-2M      electron-cyclotron current drive      neoclassical tearing modes      sawtooth  
Received:  03 June 2015      Revised:  30 November 2015      Accepted manuscript online: 
PACS:  52.35.Hr (Electromagnetic waves (e.g., electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid))  
  52.55.Fa (Tokamaks, spherical tokamaks)  
  52.55.Wq (Current drive; helicity injection)  
  52.35.Py (Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.))  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11375085, 11405082, 11505092,11475083, and 11375053), the National Magnetic Confinement Fusion Science Program of China (Grant Nos. 2013GB104004, 2013GB111000, 2014GB107000, and 2014GB108002), and the Natural Science Foundation of Hunan Province, China (Grant No. 2015JJ4044).
Corresponding Authors:  Jia-Qi Dong     E-mail:

Cite this article: 

Jing-Chun Li(李景春), Xue-Yu Gong(龚学余), Jia-Qi Dong(董家齐), Jun Wang(王俊), Lan Yin(尹岚) Numerical analysis of the optimized performance of the electron cyclotron wave system in a HL-2M tokamak 2016 Chin. Phys. B 25 045201

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