Direct observation of current in type-I edge-localized-mode filaments on the ASDEX upgrade tokamak

N. Vianello; M. Zuin; R. Cavazzana; Volker Naulin; Jens Juul Rasmussen; R. Schrittwieser; C. Ionita; F. Mehlmann; H.W. Müller; V. Rohde; M. Maraschek

doi:10.1103/PhysRevLett.106.125002

Direct observation of current in type-I edge-localized-mode filaments on the ASDEX upgrade tokamak

N. Vianello, M. Zuin, R. Cavazzana, Volker Naulin, Jens Juul Rasmussen, R. Schrittwieser, C. Ionita, F. Mehlmann, H.W. Müller, V. Rohde, M. Maraschek

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Magnetically confined plasmas in the high confinement regime are regularly subjected to relaxation oscillations, termed edge localized modes (ELMs), leading to large transport events. Present ELM theories rely on a combined effect of edge current and the edge pressure gradients which result in intermediate mode number (n≅10-15) structures (filaments) localized in the perpendicular plane and extended along the field lines. By detailed localized measurements of the magnetic field perturbation associated to type-I ELM filaments, it is shown that these filaments carry a substantial current. © 2011 American Physical Society.

Original language	English
Journal	Physical Review Letters
Volume	106
Issue number	12
Pages (from-to)	125002
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.106.125002
Publication status	Published - 2011

Keywords

Fusion energy

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10.1103/PhysRevLett.106.125002

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title = "Direct observation of current in type-I edge-localized-mode filaments on the ASDEX upgrade tokamak",

abstract = "Magnetically confined plasmas in the high confinement regime are regularly subjected to relaxation oscillations, termed edge localized modes (ELMs), leading to large transport events. Present ELM theories rely on a combined effect of edge current and the edge pressure gradients which result in intermediate mode number (n≅10-15) structures (filaments) localized in the perpendicular plane and extended along the field lines. By detailed localized measurements of the magnetic field perturbation associated to type-I ELM filaments, it is shown that these filaments carry a substantial current. {\textcopyright} 2011 American Physical Society.",

keywords = "Fusion energy, Fusionsenergiforskning",

author = "N. Vianello and M. Zuin and R. Cavazzana and Volker Naulin and {Juul Rasmussen}, Jens and R. Schrittwieser and C. Ionita and F. Mehlmann and H.W. M{\"u}ller and V. Rohde and M. Maraschek",

year = "2011",

doi = "10.1103/PhysRevLett.106.125002",

language = "English",

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T1 - Direct observation of current in type-I edge-localized-mode filaments on the ASDEX upgrade tokamak

AU - Vianello, N.

AU - Zuin, M.

AU - Cavazzana, R.

AU - Naulin, Volker

AU - Juul Rasmussen, Jens

AU - Schrittwieser, R.

AU - Ionita, C.

AU - Mehlmann, F.

AU - Müller, H.W.

AU - Rohde, V.

AU - Maraschek, M.

PY - 2011

Y1 - 2011

N2 - Magnetically confined plasmas in the high confinement regime are regularly subjected to relaxation oscillations, termed edge localized modes (ELMs), leading to large transport events. Present ELM theories rely on a combined effect of edge current and the edge pressure gradients which result in intermediate mode number (n≅10-15) structures (filaments) localized in the perpendicular plane and extended along the field lines. By detailed localized measurements of the magnetic field perturbation associated to type-I ELM filaments, it is shown that these filaments carry a substantial current. © 2011 American Physical Society.

AB - Magnetically confined plasmas in the high confinement regime are regularly subjected to relaxation oscillations, termed edge localized modes (ELMs), leading to large transport events. Present ELM theories rely on a combined effect of edge current and the edge pressure gradients which result in intermediate mode number (n≅10-15) structures (filaments) localized in the perpendicular plane and extended along the field lines. By detailed localized measurements of the magnetic field perturbation associated to type-I ELM filaments, it is shown that these filaments carry a substantial current. © 2011 American Physical Society.

KW - Fusion energy

KW - Fusionsenergiforskning

U2 - 10.1103/PhysRevLett.106.125002

DO - 10.1103/PhysRevLett.106.125002

M3 - Journal article

C2 - 21517319

SN - 0031-9007

VL - 106

SP - 125002

JO - Physical Review Letters

JF - Physical Review Letters

IS - 12

ER -

Direct observation of current in type-I edge-localized-mode filaments on the ASDEX upgrade tokamak

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