Microturbulence and Flow Shear in High-performance JET ITB Plasma

Budny, R.V. ; Andre, A. ; Bicoulet, A. ; Challis, C. ; Conway, G.D. ; Dorland, W. ; Ernst, D.R. ; Hahm, T.S. ; Hender, T.C. ; McCune, D. ; Rewoldt, G. ; Sharapov, S.E.

Princeton University. Plasma Physics Laboratory.

关键词: 70 Plasma Physics And Fusion Technology;    Rotation;    Plasma;    Transport;    Shear;   

DOI  :  10.2172/792991
RP-ID  :  PPPL-3637rev
RP-ID  :  AC02-76CH03073
RP-ID  :  792991

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来源: UNT Digital Library

【 摘 要 】

The transport, flow shear, and linear growth rates of microturbulence are studied for a Joint European Torus (JET) plasma with high central q in which an internal transport barrier (ITB) forms and grows to a large radius. The linear microturbulence growth rates of the fastest growing (most unstable) toroidal modes with high toroidal mode number are calculated using the GS2 and FULL gyrokinetic codes. These linear growth rates, gamma (subscript lin) are large, but the flow-shearing rates, gamma (subscript ExB) (dominated by the toroidal rotation contribution) are also comparably large when and where the ITB exists.