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Abstract

Using the bicubic finite element codes CHEASE and PENN, Maxwell's equations are solved for global wavefields in a realistic tokamak equilibrium. Two different models have been implemented to calculate the linear response of the plasma. The first is a cold resistive model which gives results in good agreement with the cold toroidal code LION in the case of TAE mode computations. The second is a hot kinetic model, which is validated with the hot cylindrical code ISMENE, reproducing the mode conversion to a kinetic Alfvén wave in the large aspect ratio limit. Using the new tool for a preliminary study, self-consistent (non-perturbative) calculations of TAE mode wavefields show how finite Larmor radius effects can couple a gap mode to the kinetic Alfvén wave, resulting in a radiatively damped KTAE mode.

Additional information

Authors: JAUN A, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne (CH);APPERT K, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne (CH);VACLAVIK J, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne (CH);VILLARD L, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne (CH);LÜTJENS H, CPT Ecole Polytechnique, Palaiseau (FR)
Bibliographic Reference: Article: Proceedings of Joint Varenna-Lausanne International Workshop on Theory of Fusion Plasmas, Varenna (IT), August 22-26, 1994, pp. 369-377
Record Number: 199510150 / Last updated on: 1995-08-22
Category: PUBLICATION
Original language: en
Available languages: en