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Abstract

If an ELM is a peeling of flux surfaces from the plasma, due to a broken separatrix, current density is lost as well as particles and energy. The fast loss of a current-carrying plasma layer modifies the plasma equilibrium, leading to sudden shifts in the strike points at each ELM, towards the plasma centre. An experimental study of this conjectured model of the ELM has been made at JET, showing that in all cases of Type I ELMs studied, strike point shifts were observed. In two cases studied in detail, the estimated equilibrium changes provoked by flux surface peeling agree qualitatively with the observed strike point shifts.

Additional information

Authors: JACHMICH S, Association EURATOM-Belgian State, LPP-ERM/KMS (BE);VILLONE F, Universita di Cassino, Assoc. EURATOM/ENEA/CREATE, DAEIMI, Cassino (IT EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);TESTA D, EFDA Close Support Unit, Garching (DE);PITTS R A, EFDA Close Support Unit, Garching (DE);LOARTE A, Associazione Euratom-ENEA sulla Fusione, Consorzio RFX, Padova (IT);SOLANO E R, Asociación EURATOM/CIEMAT para Fusión, Madrid (ES);HAWKES N, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);ALPER B, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);GUENTHER K, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);CENEDESE A, ;BOLZONELLA T, Euratom-VR Association, Dept. of Physics, Stockholm (SE);RACHLEW E, FOM-Rijnhuisen, Association EURATOM-FOM, Nieuwegein (NL);KEMPENAARS M, D.I.E., Universita` di Padova, Padova (IT);KOROKTOV A, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);STAMP M, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);ANDREW P, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);ARSHAD S A, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);CONBOY J, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);CORRE Y, Centre de Recherches en Physique des Plasmas, Association EURATOM-Confédération Suisse, Ecole Polytechnique Fédérale de Lausanne (CH)
Bibliographic Reference: An article published in: Journal of Nuclear Materials 337-339 (2005) 747-750
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: 200518089 / Last updated on: 2005-04-19
Category: PUBLICATION
Original language: en
Available languages: en
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