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17–22 Oct 2016
Kyoto International Conference Center
Japan timezone

Experimental investigation of interaction between turbulence and large-scale mode structures in HL-2A

21 Oct 2016, 08:30
4h
Kyoto International Conference Center

Kyoto International Conference Center

Takaragaike, Sakyo-ku, Kyoto 606-0001 Japan
Poster EXC - Magnetic Confinement Experiments: Confinement Poster 7

Speaker

Dr Xiaoquan JI (Southwestern Institute of Physics, Chengdu 610041 China)

Description

We present the first experimental observation of self-regulation of nonlocal transport events by NTMs generated during transient nonlocal transport events. The nonlocal effect is excited by edge cooling and propagates inward by avalanche events. These cause a local increase of the pressure gradient at the inversion surface, and thus the onset of the NTM in relatively low β plasmas. The presence of the NTM, results in the development of sheared flows at the magnetic island. These then truncate the nonlocal transport due to suppression of avalanches by shearing. These results may have important implications for the understanding of multi-scale transport dynamics, i. e., the intimate interplay between small and large scale structures.
Country or International Organization China
Paper Number EX/P7-19

Primary author

Dr Xiaoquan JI (Southwestern Institute of Physics, Chengdu 610041 China)

Co-authors

Prof. Beibin Feng (Southwestern Institute of Physics) Dr Deliang Yu (Southwestern Institute of Physics) Mr Jun Cheng (Southwestern Institute of Physics) Dr Longwen Yan (Southwestern Instotute of Physics) Dr Min Jiang (Southwestern Institute of Physics) Mr Ou Pan (Southwestern Institute of Physics) Prof. Qingwei Yang (Southwestern Institute of Physics) Dr Wei Chen (Southwestern Institute of Physics, P.O. Box 432 Chengdu 610041, China) Mr Wulu Zhong (Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People’s Republic of China) Dr Yan Zhou (Southwestern Institute of Physics) Prof. Yi Liu (southwestern institute of physics) Prof. Yuhong Xu (Southwestern Institute of Physics) Dr Yunbo Dong (Southwestern Institute of Physics) Dr Zhongbing Shi (Southwestern Institute of Physics)

Presentation materials