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Sensitivity of global energy confinement to the boundary condition due to coupling of MHD and transport processes

Published online by Cambridge University Press:  13 March 2009

X. H. Deng ,
C. Zhang ,
Y. P. Huo ,
J. F. Wang  and
Shui Wang
X. H. Deng
Affiliation:
Department of Space Science, University of Wuhan, Wuhan, Hubei, 430072, People's Republic of China
C. Zhang
Affiliation:
Department of Space Science, University of Wuhan, Wuhan, Hubei, 430072, People's Republic of China
Y. P. Huo
Affiliation:
Department of Space Science, University of Wuhan, Wuhan, Hubei, 430072, People's Republic of China
J. F. Wang
Affiliation:
Department of Space Science, University of Wuhan, Wuhan, Hubei, 430072, People's Republic of China
Shui Wang
Affiliation:
Department of Space Science, University of Wuhan, Wuhan, Hubei, 430072, People's Republic of China
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Abstract

MHD instabilities are governed by the transport-determined plasma profiles, and the transport process is affected in turn by the instabilities. Using a one-dimensional code, we have investigated the inter-relationship between instabilities, transport and plasma profile in a tokamak discharge. The results show that the global energy confinement becomes strongly dependent on the boundary transport condition owing to strong coupling between them, and a higher edge temperature would ensure a higher core temperature and hence greater global energy confinement.

Type
Research Article
Information
Journal of Plasma Physics , Volume 51 , Issue 2 , April 1994 , pp. 201 - 210
Copyright
Copyright © Cambridge University Press 1994

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