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Abstract

Asymmetries are a ubiquitous feature of the scrape-off layer (SOL) and divertor plasmas in any tokamak and are thought to be driven primarily by a variety of drift flows, the directions of which reverse with reversal of the main toroidal field. The understanding of precisely how these field dependent drifts combine to yield any given experimental observation is still very much incomplete. A recent campaign of reversed field operation at JET designed to match a variety of discharges to their more frequently executed forward field counterparts has been executed in an attempt to contribute to this understanding. This paper summarises the most important findings from these experiments and includes some new EDGE2D simulation results describing the SOL flow.

Additional information

Authors: PITTS R A, Centre de Recherches en Physique des Plasmas, Association EURATOM-Confédération Suisse, Ecole Polytechnique Fédérale de Lausanne (CH);BONNIN X, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);CORRE Y, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);TSITRONE E, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);CHANKIN A V, Max-Planck-Institut für Plasmaphysik, IPP-EURATOM Association, Garching (DE);ANDREW P, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);CORRIGAN G, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);ERENTS S K, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);FUNDAMENSKI W, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);LOMAS P J, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);MATTHEWS G F, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);STAMP M F, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);DURAN I, Institute of Plasma Physics, Association EURATOM-IPP.CR, Prague (CZ);JACHMICH S, Association EURATOM-Belgian State, LPP-ERM/KMS (BE);LOARTE A, EFDA Close Support Unit, Garching (DE);STRACHAN J D, Princeton Plasma Physics Laboratory, Princeton (US);COSTER D, Max-Planck-Institut für Plasmaphysik, IPP-EURATOM Association, Garching (DE);EICH T, Max-Planck-Institut für Plasmaphysik, IPP-EURATOM Association, Garching (DE);HUBER A, Institut für Plasmaphysik, Forschungszentrum Jülich, Association EURATOM/FZJ, Trilateral Euregio Cluster, Jülich (DE);LEHNEN M, Institut für Plasmaphysik, Forschungszentrum Jülich, Association EURATOM/FZJ, Trilateral Euregio Cluster, Jülich (DE);RAPP J, Institut für Plasmaphysik, Forschungszentrum Jülich, Association EURATOM/FZJ, Trilateral Euregio Cluster, Jülich (DE);KIRNEV G, Moscow Nuclear Fusion Institute, RRC �Kurchatov Institute�, Moscow (RU);SILVA C, Associacao EURATOM-IST, Centro de Fusão Nuclear, Instituto Superior Técnico, Lisbon (PT)
Bibliographic Reference: An article published in: Journal of Nuclear Materials 337-339 (2005) 146-153
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://probe.usp.br/cgi-bin/sciserv.pl?collection=journals&journal=00223115
Record Number: 200518078 / Last updated on: 2005-04-19
Category: PUBLICATION
Original language: en
Available languages: en