Publications related to Modelling of macroscopic magnetic islands in tokamaks

Full-discharge simulation and optimization with the RAPTOR code, from present tokamaks to ITER and DEMO

Tokamak devices aim to magnetically confine a hydrogen plasma at sufficiently high pressure to achieve net energy production from nuclear fusion of light isotopes. Predictive modeling and optimization is crucial for reliable operation of tokamak reactors, ...

EPFL2023

First global simulations of plasma turbulence in a stellarator with an island divertor

Paolo Ricci, Joaquim Loizu Cisquella, António João Caeiro Heitor Coelho

We present the results of 3D, flux-driven, global, two-fluid electrostatic turbulence simulations in a 5-field period stellarator with an island divertor. The numerical simulations are carried out with the GBS code, which solves the two-fluid drift-reduced ...

2021

Overview of physics studies on ASDEX Upgrade

Olivier Sauter, Basil Duval, Stefano Coda, Timothy Goodman, Benoît Labit, Alessandro Pau, Federico Alberto Alfredo Felici, Cristian Sommariva, Laurie Porte, Antoine Pierre Emmanuel Alexis Merle, Haomin Sun, Richard Pitts, Yann Camenen, Marco Wischmeier, Nicola Vianello, Alberto Bottino, Emiliano Fable, Andrea Scarabosio, Alessandro Bortolon, Dávid Wágner, Fang Liu, Thomas Binderup Jensen, Xiao Wang, Bernhard Sieglin, Otto Asunta, Hartmut Zohm, Emanuele Poli, Gergely Papp, Giovanni Tardini

The ASDEX Upgrade (AUG) programme, jointly run with the EUROfusion MST1 task force, continues to significantly enhance the physics base of ITER and DEMO. Here, the full tungsten wall is a key asset for extrapolating to future devices. The high overall heat ...

IOP PUBLISHING LTD2019

Modelling of non-linear edge harmonic oscillations and the effect of non-axisymmetric magnetic coils

Jonathan Graves, Wilfred Anthony Cooper, Daniele Brunetti, Andreas Kleiner, Guillermo Bustos Ramirez

Quiescent H-mode (QH-mode) operation is highly desirable relative to the well known H- mode operation because it allows for high energy density in the core as well as potentially im- proved confinement of energy and particles. A feature of QH-mode is that ...

European Physical Society2019

Properties of plasma turbulence in the periphery of diverted tokamaks

Paolo Ricci, Paola Paruta, Maurizio Giacomin, Carrie Fiona Beadle

The turbulent plasma dynamics in the periphery of a tokamak plays a key role in determining its overall performances. In particular, it governs the confinement properties of the device, through the formation of a transport barrier associated with the L-H t ...

2019

On the triggerless onset of 2/1 neoclassical tearing modes in TCV

Olivier Sauter, Federico Alberto Alfredo Felici, Antoine Pierre Emmanuel Alexis Merle, Mengdi Kong

Triggerless

2/1

neoclassical tearing modes (NTMs), i.e.

2/1

NTMs that originate from unstable safety factor profiles (with positive classical stability index at zero island width, i.e.

\Delta'_0>0

) and saturate neoclassically under the effect of pert ...

IOP2019

Poloidal CX visible light plasma rotation diagnostics in TCV

Claudio Marini

Controlled thermonuclear fusion is the main goal of plasma physics. At the Swiss Plasma Center, the Tokamak `a Configuration Variable (TCV) constitutes the main experiment on fusion research, where high temperature plasmas are confined by means of magneti ...

EPFL2017

Neoclassical toroidal torque generation by auxiliary heating in non-axisymmetric tori

Olivier Sauter

In conditions of ideal axisymmetry, for a magnetized plasma in a generic bounded domain, necessarily toroidal, the uniform absorption of external energy (e.g. rf or isotropic alpha heating) clearly cannot give rise to net forces or torques. A rather common ...

IOP2016

Demonstration of sawtooth period control with EC waves in KSTAR plasma

Olivier Sauter, Timothy Goodman, Doohyun Kim, Donghyun Kim

The sawtooth period control in tokamak is important issue in recent years because the sawtooth crash can trigger TM/NTM instabilities and drive plasmas unstable. The control of sawtooth period by the modification of local current profile near the q=1 surfa ...

E D P Sciences2015

Recent ASDEX Upgrade research in support of ITER and DEMO

Olivier Sauter, Basil Duval, Stefano Coda, Timothy Goodman, Alessandro Pau, Federico Alberto Alfredo Felici, Laurie Porte, Haomin Sun, Yann Camenen, Marco Wischmeier, Nicola Vianello, Alberto Bottino, Emiliano Fable, Andrea Scarabosio, Doohyun Kim, Dávid Wágner, Thomas Binderup Jensen, Heinz Mueller, Donghyun Kim, Xiao Wang, Bernhard Sieglin, Otto Asunta, Hartmut Zohm, Emanuele Poli, Gergely Papp, Giovanni Tardini

Recent experiments on the ASDEX Upgrade tokamak aim at improving the physics base for ITER and DEMO to aid the machine design and prepare efficient operation. Type I edge localized mode (ELM) mitigation using resonant magnetic perturbations (RMPs) has been ...

Iop Publishing Ltd2015

Modelling of macroscopic magnetic islands in tokamaks

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Full-discharge simulation and optimization with the RAPTOR code, from present tokamaks to ITER and DEMO

First global simulations of plasma turbulence in a stellarator with an island divertor

Overview of physics studies on ASDEX Upgrade

Modelling of non-linear edge harmonic oscillations and the effect of non-axisymmetric magnetic coils

Properties of plasma turbulence in the periphery of diverted tokamaks

On the triggerless onset of 2/1 neoclassical tearing modes in TCV

Poloidal CX visible light plasma rotation diagnostics in TCV

Neoclassical toroidal torque generation by auxiliary heating in non-axisymmetric tori

Demonstration of sawtooth period control with EC waves in KSTAR plasma

Recent ASDEX Upgrade research in support of ITER and DEMO

Full-discharge simulation and optimization with the RAPTOR code, from present tokamaks to ITER and DEMO

First global simulations of plasma turbulence in a stellarator with an island divertor

Modelling of non-linear edge harmonic oscillations and the effect of non-axisymmetric magnetic coils

Poloidal CX visible light plasma rotation diagnostics in TCV

Properties of plasma turbulence in the periphery of diverted tokamaks

Neoclassical toroidal torque generation by auxiliary heating in non-axisymmetric tori

Overview of physics studies on ASDEX Upgrade

On the triggerless onset of 2/1 neoclassical tearing modes in TCV

Demonstration of sawtooth period control with EC waves in KSTAR plasma

Recent ASDEX Upgrade research in support of ITER and DEMO