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Laurie Porte

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Publications associées (101)

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ELM-induced cold pulse propagation in ASDEX Upgrade

Olivier Sauter, Richard Pitts, Stefano Coda, Basil Duval, Timothy Goodman, Yves Martin, Yann Camenen, Jan Horacek, Javier García Hernández, Duccio Testa, Marco Wischmeier, Jean-Marc Moret, Patrick Blanchard, Alessandro Pau, Federico Alberto Alfredo Felici, Roland Behn, Antonio José Pereira de Figueiredo, Cristian Sommariva, Benoît Labit, Holger Reimerdes, Laurie Porte, Christian Gabriel Theiler, Marc Gruber, Alexander Karpushov, Emiliano Fable, Ben McMillan, Federico Nespoli, Kevin Henricus Annemarie Verhaegh, Antoine Pierre Emmanuel Alexis Merle, Umar Sheikh, Matteo Fontana, Yanis Andrebe, Cristian Galperti, Joan Decker, Dávid Wágner, Cedric Kar-Wai Tsui, Doohyun Kim, Nicola Vianello, Pedro Andres Molina Cabrera, Anna Teplukhina, Thomas Binderup Jensen, Zhouji Huang, Attila Bencze, Claudio Marini, Wouter Vijvers, Himank Anand, Dahye Choi, Hoang Bao Le, Anton Malygin, Mélanie Preynas

In ASDEX Upgrade, the propagation of cold pulses induced by type-I edge localized modes (ELMs) is studied using electron cyclotron emission measurements, in a dataset of plasmas with moderate triangularity. It is found that the edge safety factor or the pl ...

2019

Saturated ideak kink/peeling formations described as three-dimensional magnetohydrodynamic tokamak equilibrium states

Olivier Sauter, Basil Duval, Jonathan Graves, Wilfred Anthony Cooper, Holger Reimerdes, Laurie Porte, Trach-Minh Tran, David Pfefferlé, Jonathan Marc Philippe Faustin, Hamish William Patten, Daniele Brunetti, Madhusudan Raghunathan, Andreas Kleiner

Free boundary magnetohydrodynamic equilibrium states with spontaneous three dimensional deformations of the plasma-vacuum interface are computed for the first time. The structures obtained have the appearance of saturated ideal external kink/peeling modes. ...

American Institute of Physics (AIP)2016

V-band nanosecond-scale pulse reflectometer diagnostic in the TCV tokamak

Stefano Coda, Laurie Porte, Pedro Andres Molina Cabrera

This article describes the realization of a novel approach to short pulse (∼1 ns) reflectometry (SPR) recently implemented in the tokamak configuration variable tokamak. Taking advantage of a fast arbitrary waveform generator and vector-network-analyzer ex ...

2019

Comparison of detachment in Ohmic plasmas with positive and negative triangularity

Olivier Sauter, Stefano Coda, Basil Duval, Holger Reimerdes, Laurie Porte, Christian Gabriel Theiler, Olivier Claude Martin Février, Artur Perek, Claudia Colandrea, Sophie Danielle Angelica Gorno, Garance Hélène Salomé Durr-Legoupil-Nicoud, Massimo Carpita, Elena Tonello, Martim Zurita, Emanuel Paul Huett

In recent years, negative triangularity (NT) has emerged as a potential high-confinement L-mode reactor solution. In this work, detachment is investigated using core density ramps in lower single null Ohmic L-mode plasmas across a wide range of upper, lowe ...

Iop Publishing Ltd2024

Experimental turbulence studies for gyro-kinetic code validation using advanced microwave diagnostics

Ambrogio Fasoli, Stefano Coda, Laurie Porte, Zhouji Huang

For a comprehensive comparison with theoretical models and advanced numerical turbulence simulations, a large spectrum of fluctuation parameters was measured on the devices ASDEX Upgrade, TCV, and Tore-Supra. Radial profiles of scale-resolved turbulence le ...

IOP Publishing Ltd2015

Plasma dynamics with second and third-harmonic ECRH and access to quasi-stationary ELM-free H-mode on TCV

Ambrogio Fasoli, Stefano Coda, Henri Weisen, Timothy Goodman, Yves Martin, Stefano Alberti, Patrick Blanchard, Laurie Porte, Mikhail Maslov, Andrea Scarabosio, Alessandro Bortolon, Gilles Arnoux

Intense electron cyclotron resonance heating (ECRH) and electron cyclotron current drive (ECCD) are employed on the Tokamak a Configuration Variable (TCV) both in second- and third-harmonic X-mode (X2 and X3). The plasma behaviour under such conditions is ...

IOP Publishing Ltd2007

High resolution density pedestal measurements during edge localized modes by short-pulse reflectometry in the TCV tokamak

Stefano Coda, Benoît Labit, Laurie Porte, Pedro Andres Molina Cabrera

This publication presents high spatio-temporal resolution (mm/μs) density profile measurements of the pedestal top during type I, III, and small edge localized mode (ELM) H- mode plasmas in the Tokamak à Configuration Variable (TCV). These measurements wer ...

2021

Third harmonic EC heating of ELMy H-mode in TCV

Yves Martin, Stefano Alberti, Laurie Porte

Ohmic H-mode discharges in the Tokamak Configuration Variable (TCV) have recently been heated for the first time by electron cyclotron (EC) waves at the 3rd harmonic (X3) at full power. New edge localized mode (ELM) behaviour has been found, with larger am ...

2006

Turbulent transport in TCV plasmas with positive and negative triangularity

Stefano Coda, Laurie Porte, Matteo Fontana, Gabriele Merlo

Local gyrokinetic simulations with the GENE code are used to investigate the turbulent transport for different levels of neutral beam injection heating power in the Tokamak a Configuration Variable (TCV) for plasmas with both positive and negative edge tri ...

2019

Complete multi-field characterization of the geodesic acoustic mode in the TCV tokamak

Stefano Coda, Laurent Villard, Stephan Brunner, Laurie Porte, Zhouji Huang, Gabriele Merlo, Julien Stanislas Pierre Dominski, Thibaut Vernay, Cornelis Adrianus de Meijere

The geodesic acoustic mode (GAM) is a coherently oscillating zonal flow that may regulate turbulence in toroidal plasmas. Uniquely, the complete poloidal and toroidal structure of the magnetic component of the turbulence-driven GAM has been mapped in the T ...

Iop Publishing Ltd2014

High density experiments in TCV ohmically heated and L-mode plasmas

Olivier Sauter, Basil Duval, Stefano Coda, Timothy Goodman, Benoît Labit, Laurie Porte, Alexander Karpushov, Antoine Pochelon, Roland Behn

Recent experiments have been performed on the Tokamak a configuration variable (TCV) to investigate the confinement properties of high density plasmas and the mechanism behind the density limit. In a limiter configuration with plasma elongation kappa = 1.3 ...

Iop Publishing Ltd2015

The effect of triangularity on fluctuations in a tokamak plasma

Olivier Sauter, Stefano Coda, Laurie Porte

The effects of plasma shaping, in particular triangularity (d), on temperature fluctuations in the tokamak a configuration variable have been studied using the correlation electron cyclotron emission system. It has been found that, in ohmic discharges with ...

IOP Publishing Ltd2018

Study of impurity C transport and plasma rotation in negative triangularity on the TCV tokamak

Olivier Sauter, Basil Duval, Stefano Coda, Benoît Labit, Laurie Porte, Alexander Karpushov, Antoine Pierre Emmanuel Alexis Merle, Alessandro Pau, Justin Richard Ball, Filippo Bagnato, Dmytry Mykytchuk

Carbon impurity transport is studied in the TCV tokamak using a charge exchange recombination diagnostic. TCVs flexible shaping capabilities were exploited to extend previous impurity transport studies to negative triangularity (delta < 0). A practical way ...

Iop Publishing Ltd2024

Demonstration of Electron-Bernstein-Wave Heating in a Tokamak via O-X-B Double-Mode Conversion

Laurie Porte, Antoine Pochelon, Yann Camenen, Loïc Curchod

The first demonstration of electron-Bernstein-wave heating by double-mode conversion from the O to the X mode in an overdense H-mode tokamak plasma has been achieved in the Tokamak a` Configuration Variable device. This technique overcomes the upper densit ...

American Physical Society2007

Expulsion of runaway electrons using ECRH in the TCV tokamak

Ewout Koen L. Devlaminck, Stefano Coda, Basil Duval, Laurie Porte, Umar Sheikh, Joan Decker, Cristian Sommariva, Luke Simons, Benjamin Alexandre Vincent, Umesh Kumar, Arsène Stéphane Tema Biwole, Jean Arthur Cazabonne

Runaway electrons (REs) are a concern for tokamak fusion reactors from discharge startup to termination. A sudden localized loss of a multi-megaampere RE beam can inflict severe damage to the first wall. Should a disruption occur, the existence of a RE see ...

IOP Publishing Ltd2024

V-band Doppler backscattering diagnostic in the TCV tokamak

Stefano Coda, Laurie Porte, Matthieu Toussaint, Pierre Lavanchy, Pedro Andres Molina Cabrera, Nicola Offeddu

A variable configuration V-band heterodyne Doppler back-scattering diagnostic has been recently made operational in the tokamak a configuration variable. This article describes the hardware setup options, flexible quasi-optical launcher antenna, data-analy ...

AMER INST PHYSICS2018

Electron Cyclotron Emission (ECE) And Correlation ECE Diagnostic On TCV

Laurie Porte, Philippe Marmillod, Matteo Fontana

The electron cyclotron emission (ECE) and correlation ECE diagnostics in TCV have been upgraded during its 2014 shutdown; this paper will provide a brief overview on their updated architecture and capabilities. The ECE system is equipped with two radiomete ...

2015

Milestone in predicting core plasma turbulence: successful multi-channel validation of the gyrokinetic code GENE

Olivier Sauter, Stefano Coda, Basil Duval, Timothy Goodman, Benoît Labit, Laurie Porte, Federico Alberto Alfredo Felici, Antoine Pierre Emmanuel Alexis Merle, Umar Sheikh, Simon Van Mulders, Alessandro Pau, Mengdi Kong, Cristian Sommariva

On the basis of several recent breakthroughs in fusion research, many activities have been launched around the world to develop fusion power plants on the fastest possible time scale. In this context, high-fidelity simulations of the plasma behavior on lar ...

2025

Electron heat transport dependence on plasma shape and collisionality in EC heated L-mode TCV plasmas

Olivier Sauter, Stefano Coda, Timothy Goodman, Antoine Pochelon, Jean-Marc Moret, Roland Behn, Yann Camenen, Laurie Porte, Alberto Bottino, Ilya Pavlov

2005

Temporal evolution of confined fast-ion velocity distributions measured by collective Thomson scattering in TEXTOR

Laurie Porte

2008