Tokamak plasma self-organization and the possibility to have the peaked density profile in ITER

The self-organization of a tokamak plasma is a fundamental turbulent plasma phenomenon, which leads to the formation of a self-consistent pressure profile. This phenomenon has been investigated in several tokamaks with different methods of heating. It is shown that the normalized pressure profile ha...

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Bibliographic Details
Published in:Nuclear fusion 2009-06, Vol.49 (6), p.065011-065011 (6)
Main Authors: Razumova, K.A, Andreev, V.F, Kislov, A.Ya, Kirneva, N.A, Lysenko, S.E, Pavlov, Yu.D, Shafranov, T.V, Donné, A.J.H, Hogeweij, G.M.D, Spakman, G.W, Jaspers, R, Kantor, M, Walsh, M
Format: Article
Language:English
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Summary:The self-organization of a tokamak plasma is a fundamental turbulent plasma phenomenon, which leads to the formation of a self-consistent pressure profile. This phenomenon has been investigated in several tokamaks with different methods of heating. It is shown that the normalized pressure profile has a universal shape for a wide class of tokamaks and regimes, if the normalized radius ρ = r /( I p R /κ B ) 1/2 is used. The consequences of this phenomenon for low aspect ratio tokamaks, the optimal deposition of additional heating, fast velocity of heat/cold pulse propagation and the possibility of obtaining a peaked density profile in ITER are discussed.
ISSN:0029-5515
1741-4326
DOI:10.1088/0029-5515/49/6/065011