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Abstract

In this paper, global gyrokinetic particle simulations have been used to search tokamak configurations which are stable against the Ion Temperature Gradient-drive (ITG) modes commonly held responsible for the core anomalous ion heat transport. The stable configurations are characterized by strongly reduced or reversed Delta B drifts on the low-field side. As in high poloidal beta tokamak experiments excellent transport properties have been observed, the authors conjecture, inspired by simulations, that this may be the result of the stabilization of ITG modes by the reduction of the Delta B drifts.

Additional information

Authors: FIVAZ M, École Polytechnique Fédérale de Lausanne, Centre de Recherches en Physique des Plasmas, Association Euratom-Confédération Suisse (CH);TRAN T M, École Polytechnique Fédérale de Lausanne, Centre de Recherches en Physique des Plasmas, Association Euratom-Confédération Suisse (CH);APPERT K, École Polytechnique Fédérale de Lausanne, Centre de Recherches en Physique des Plasmas, Association Euratom-Confédération Suisse (CH);VACLAVIK J, École Polytechnique Fédérale de Lausanne, Centre de Recherches en Physique des Plasmas, Association Euratom-Confédération Suisse (CH);PARKER S E, University of Colorado, Department of Physics, Boulder (US)
Bibliographic Reference: Article: Physical Review Letters (1997)
Record Number: 199611542 / Last updated on: 1997-01-27
Category: PUBLICATION
Original language: en
Available languages: en