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Journal article

Magnetic signature of current carrying edge localized modes filaments on the Joint European Torus tokamak

By Migliucci, P.1; Naulin, Volker2,3

From

Università degli Studi di Roma Tor Vergata1

Plasma Physics and Technology Programme, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2

Risø National Laboratory for Sustainable Energy, Technical University of Denmark3

Fast magnetic pickup coils are used in forward modeling to match parameters in a simple edge localized mode (ELM) filament model. This novel method allows us to determine key parameters for the evolution of the ELM filaments, as effective mode number, radial and toroidal velocities, and average current from standard magnetic diagnostics.

The method is employed on a number of Joint European Torus (JET) [ F. Romanelli, R. Kamendje, and JET-EFDA Contributors, Nucl. Fusion 49, 104006 (2009) ] pulses. The parameter values obtained are compared to ELM filament characterization from JET and other tokamaks, obtained by a range of different diagnostics.

It is found that the forward modeling produces key parameters such as the number of filaments and their toroidal velocity in agreement with other observations and in addition allows an estimate of the filament current.

Language: English
Publisher: American Institute of Physics
Year: 2010
Pages: 072507
ISSN: 10897674 and 1070664x
Types: Journal article
DOI: 10.1063/1.3436608
ORCIDs: Naulin, Volker
Keywords

Fusion energy Fusionsenergi Fusionsenergiforskning

Other keywords

Magnetically Confined Plasmas, Heating, Confinement

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