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Abstract

The E x B drift motion of charged test particle dynamics in the Scrape-Off-Layer (SOL) is analyzed to investigate a transport control strategy based on Hamiltonian dynamics. We model SOL turbulence using a 2D non-linear fluid code based on interchange instability which was found to exhibit intermittent dynamics of the particle flux. The effect of a small and appropriate modification of the turbulent electric potential is studied with respect to the chaotic diffusion of test particle dynamics. Over a significant range in the magnitude of the turbulent electrostatic field, a three-fold reduction of the test particle diffusion coefficient is achieved.

Additional information

Authors: CIRAOLO G, Ecole Centrale de Marseille and MSNM-GP Unité Mixte de Recherche (UMR 6181) du CNRS, Technopole de Château, Gombert (FR);GHENDRIH PH, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);SARAZIN Y, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);CHANDRE C, Centre de Physique Théorique, Marseille (FR);LIMA R, Centre de Physique Théorique, Marseille (FR);VITTOT M, Centre de Physique Théorique, Marseille (FR);PETTINI M, Instituto Nazionale di Astrofisica, Firenze (IT)
Bibliographic Reference: An article published in: Journal of Nuclear Materials (2006), online edition
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://www.sciencedirect.com/science/journal/00223115
Record Number: 200718982 / Last updated on: 2007-03-26
Category: PUBLICATION
Original language: en
Available languages: en