Quasilinear modelling of RMP interaction with a tokamak plasma: application to ASDEX Upgrade ELM mitigation experiments

Martin Heyn; Ivan Borisovich Ivanov; Sergei Kasilov; Winfried Kernbichler; Peter Leitner; Viktor Nemov; Wolfgang Suttrop; Team ASDEX Upgrade

doi:10.1088/0029-5515/54/6/064005

Quasilinear modelling of RMP interaction with a tokamak plasma: application to ASDEX Upgrade ELM mitigation experiments

Martin Heyn, Ivan Borisovich Ivanov, Sergei Kasilov, Winfried Kernbichler, Peter Leitner, Viktor Nemov, Wolfgang Suttrop, Team ASDEX Upgrade

Institute of Theoretical and Computational Physics (5150)

Research output: Contribution to journal › Article › peer-review

Abstract

First experiments on edge-localized mode (ELM) mitigation with the help of ITER-like coils on ASDEX Upgrade are analysed using linear and quasilinear kinetic models to describe the interaction of resonant magnetic field perturbations (RMP) with the plasma. The gyrokinetic derivation of RMP-driven transport coefficients is given in detail. The role of fluid resonances is studied, in particular the role of the resonance associated with the equilibrium electric field reversal point Er = 0. Like the electron fluid resonance associated with the zero of the total perpendicular electron fluid velocity, the Er = 0 resonance may lead to enhanced transport due to the reduction of RMP shielding in the pedestal region where the RMP field can even be amplified by this resonance. The conditions on the RMP coil spectrum resulting from the analysis are discussed

Original language	English
Article number	064005
Number of pages	18
Journal	Nuclear Fusion
Volume	54
DOIs	https://doi.org/10.1088/0029-5515/54/6/064005
Publication status	Published - 2014

Fields of Expertise

Information, Communication & Computing

Treatment code (Nähere Zuordnung)

Basic - Fundamental (Grundlagenforschung)
Theoretical
Experimental

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10.1088/0029-5515/54/6/064005

Heyn2014_064005.pdfFinal published version, 2.96 MB

EU - Transport Heating in Toroidal Device - Transport and Heating in Toroidal Devices (ÖAW-EURATOM)
Allmaier, K., Heyn, M., Nyemov, V., Seiwald, B., Kernbichler, W., Leitold, G., Kasilov, S. & Ivanov, I. B.
1/01/96 → 31/12/20
Project: Research project

Cite this

@article{743441d63a4b499194cf5eb5b4bc1c9b,

title = "Quasilinear modelling of RMP interaction with a tokamak plasma: application to ASDEX Upgrade ELM mitigation experiments",

abstract = "First experiments on edge-localized mode (ELM) mitigation with the help of ITER-like coils on ASDEX Upgrade are analysed using linear and quasilinear kinetic models to describe the interaction of resonant magnetic field perturbations (RMP) with the plasma. The gyrokinetic derivation of RMP-driven transport coefficients is given in detail. The role of fluid resonances is studied, in particular the role of the resonance associated with the equilibrium electric field reversal point Er = 0. Like the electron fluid resonance associated with the zero of the total perpendicular electron fluid velocity, the Er = 0 resonance may lead to enhanced transport due to the reduction of RMP shielding in the pedestal region where the RMP field can even be amplified by this resonance. The conditions on the RMP coil spectrum resulting from the analysis are discussed",

author = "Martin Heyn and Ivanov, {Ivan Borisovich} and Sergei Kasilov and Winfried Kernbichler and Peter Leitner and Viktor Nemov and Wolfgang Suttrop and {ASDEX Upgrade}, Team",

year = "2014",

doi = "10.1088/0029-5515/54/6/064005",

language = "English",

volume = "54",

journal = "Nuclear Fusion",

issn = "1741-4326",

publisher = "IOP Publishing Ltd.",

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T1 - Quasilinear modelling of RMP interaction with a tokamak plasma: application to ASDEX Upgrade ELM mitigation experiments

AU - Heyn, Martin

AU - Ivanov, Ivan Borisovich

AU - Kasilov, Sergei

AU - Kernbichler, Winfried

AU - Leitner, Peter

AU - Nemov, Viktor

AU - Suttrop, Wolfgang

AU - ASDEX Upgrade, Team

PY - 2014

Y1 - 2014

N2 - First experiments on edge-localized mode (ELM) mitigation with the help of ITER-like coils on ASDEX Upgrade are analysed using linear and quasilinear kinetic models to describe the interaction of resonant magnetic field perturbations (RMP) with the plasma. The gyrokinetic derivation of RMP-driven transport coefficients is given in detail. The role of fluid resonances is studied, in particular the role of the resonance associated with the equilibrium electric field reversal point Er = 0. Like the electron fluid resonance associated with the zero of the total perpendicular electron fluid velocity, the Er = 0 resonance may lead to enhanced transport due to the reduction of RMP shielding in the pedestal region where the RMP field can even be amplified by this resonance. The conditions on the RMP coil spectrum resulting from the analysis are discussed

AB - First experiments on edge-localized mode (ELM) mitigation with the help of ITER-like coils on ASDEX Upgrade are analysed using linear and quasilinear kinetic models to describe the interaction of resonant magnetic field perturbations (RMP) with the plasma. The gyrokinetic derivation of RMP-driven transport coefficients is given in detail. The role of fluid resonances is studied, in particular the role of the resonance associated with the equilibrium electric field reversal point Er = 0. Like the electron fluid resonance associated with the zero of the total perpendicular electron fluid velocity, the Er = 0 resonance may lead to enhanced transport due to the reduction of RMP shielding in the pedestal region where the RMP field can even be amplified by this resonance. The conditions on the RMP coil spectrum resulting from the analysis are discussed

U2 - 10.1088/0029-5515/54/6/064005

DO - 10.1088/0029-5515/54/6/064005

M3 - Article

SN - 1741-4326

VL - 54

JO - Nuclear Fusion

JF - Nuclear Fusion

M1 - 064005

ER -

Quasilinear modelling of RMP interaction with a tokamak plasma: application to ASDEX Upgrade ELM mitigation experiments

Abstract

Fields of Expertise

Treatment code (Nähere Zuordnung)

Access to Document

Projects

EU - Transport Heating in Toroidal Device - Transport and Heating in Toroidal Devices (ÖAW-EURATOM)

Cite this