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Issues of Electric Fields in Fusion Devices

Michael TENDLER

Alfvén Laboratory, KTH, Stockholm, Sweden

(Received 22 January 2009 / Accepted 28 July 2009 / Published 26 March 2010)

Abstract

At present it is well understood that the key element in the transition physics is the origin of the strong radial electric field and suppression of the turbulence fluctuation level by a strong poloidal rotation in the E × B fields. As a result, the transport coefficients are strongly reduced at fixed places and transport barriers with steep density and temperature gradients are formed near the separatrix or the last closed flux surface (ETB) or in the core region (ITB). The key element in the transition physics is the origin of the strong radial electric field. The impact of the momentum transport is brought to light.

Copyright (c) 2010 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

LH transitions, E × B shear suppression, anomalous momentum transport

DOI: 10.1585/pfr.5.S1004

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This paper may be cited as follows:

Michael TENDLER, Plasma Fusion Res. 5, S1004 (2010).