Experimental study of density pump-out on EAST

Shouxin WANG (王守信); Haiqing LIU (刘海庆); Yinxian JIE (揭银先); Qing ZANG (臧庆); Bo LYU (吕波); Tao ZHANG (张涛); Long ZENG (曾龙); Shoubiao ZHANG (张寿彪); Nan SHI (史楠); Ting LAN (兰婷); Zhiyong ZOU (邹志勇); Weiming LI (李维明); Yuan YAO (姚远); Xuechao WEI (魏学朝); Hui LIAN (连辉); Gen LI (李根); Handong XU (徐旵东); Xinjun ZHANG (张新军); Bin WU (吴斌); Youwen SUN (孙有文); the EAST Team

doi:10.1088/1009-0630/19/1/015102

Plasma Science and Technology > 2017 > 19(1): 15102-015102. > DOI: 10.1088/1009-0630/19/1/015102

Shouxin WANG (王守信), Haiqing LIU (刘海庆), Yinxian JIE (揭银先), Qing ZANG (臧庆), Bo LYU (吕波), Tao ZHANG (张涛), Long ZENG (曾龙), Shoubiao ZHANG (张寿彪), Nan SHI (史楠), Ting LAN (兰婷), Zhiyong ZOU (邹志勇), Weiming LI (李维明), Yuan YAO (姚远), Xuechao WEI (魏学朝), Hui LIAN (连辉), Gen LI (李根), Handong XU (徐旵东), Xinjun ZHANG (张新军), Bin WU (吴斌), Youwen SUN (孙有文), the EAST Team. Experimental study of density pump-out on EAST[J]. Plasma Science and Technology, 2017, 19(1): 15102-015102. DOI: 10.1088/1009-0630/19/1/015102

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Experimental study of density pump-out on EAST

1 Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China 2 University of Science and Technology of China, Hefei 230026, People’s Republic of China 3 Tianjin University of Technology, Tianjin 300384, People’s Republic of China

Funds: Supported by the National Magnetic Confinement Fusion Program of China Nos.2012GB101002 and 2014GB106002), and National Nature Science Foundation of China (Nos.11375237 and 11105184).

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Received Date: February 19, 2016

Graphical Abstract

Abstract

Abstract

In the experimental advanced superconducting tokamak, density pump-out phenomena were observed by using a multi-channel polarimeter-interferometer system under different heating schemes of ion cyclotron resonant heating, electron cyclotron resonance heating, and neutral beam injection. The density pump-out was also induced with application of resonant magnetic perturbation, accompanied with a degradation of particle confinement. For the comparison analysis in all heating schemes, the typical plasma parameters are plasma current 400 kA, toroidal field 2 T, and line average density 2×10¹⁹ m⁻³. The experimental results show that the degree of pump-out is concerned with electron density and heating power. Low density deuterium low confinement (L-mode) plasmas (<3.5×10¹⁹ m⁻³) show strong pump-out effects. The density pump-out correlated with a significant drop of particle confinement.
- density pump-out,
- particle con?nement,
- ECRH,
- ICRF,
- NBI,
- RMP

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References (15)

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