Journal Article

FZJ-2017-05557

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Observation of internal transport barrier in ELMy H-mode plasmas on the EAST tokamak

Yang, Y. ; Gao, X. (Corresponding author)FZJ* ; Liu, H. Q. ; Li, G. Q. ; Zhang, T.FZJ* ; Zeng, L. ; Liu, Y. K. ; Wu, M. Q. ; Kong, D. F. ; Ming, T. F. ; Han, X.FZJ* ; Wang, Y. M. ; Zang, Q. ; Lyu, B. ; Li, Y. Y. ; Duan, Y. M. ; Zhong, F. B. ; Li, K. ; Xu, L. Q. ; Gong, X. Z. ; Sun, Y. W. ; Qian, J. P. ; Ding, B. J. ; Liu, Z. X. ; Liu, F. K. ; Hu, C. D. ; Xiang, N. ; Liang, Y. F. ; Zhang, X. D. ; Wan, B. N. ; Li, J. G. ; Wan, Y. X.

2017
IOP Publ. Bristol

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Please use a persistent id in citations: doi:10.1088/1361-6587/aa6f2a

Abstract: The internal transport barrier (ITB) has been obtained in ELMy H-mode plasmas by neutron beam injection and lower hybrid wave heating on the Experimental Advanced Superconducting Tokamak (EAST). The ITB structure has been observed in profiles of ion temperature, electron temperature, and electron density within ρ < 0.5. It was also observed that the ITB formation is stepwise. Due to the ITB formation, the confinement quality H 98y2 increases from 1 to 1.1 and the normalized beta, β N, increases from 1.5 to near 2. The fishbone activity observed during the ITB phase suggests the central safety factor q(0) ~ 1. Transport coefficients are calculated by particle balance and power balance analysis, showing an obvious reduction after the ITB formation.

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Contributing Institute(s):

1. Plasmaphysik (IEK-4)

Research Program(s):

1. 174 - Plasma-Wall-Interaction (POF3-174) (POF3-174)

Appears in the scientific report 2017

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Database coverage:
Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; National-Konsortium ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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