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Benoît Labit

Cette personne a quitté l’EPFL

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Publications associées (144)

Page 4 sur 8

Non-linear simulations of the TCV Scrape-Off Layer

Ivo Furno, Benoît Labit, Joaquim Loizu Cisquella, Paolo Ricci, Fabio Riva, Federico David Halpern, Federico Nespoli

To investigate the mechanisms leading to the heat deposition onto the first wall in the Scrape-Off Layer (SOL), we perform dedicated numerical non-linear simulations of the SOL plasma dynamics of a TCV discharge using the GBS code. The simulated parallel h ...

Elsevier Science Bv2017

Analysis and expansion of the quasi-continuous exhaust (QCE) regime in ASDEX Upgrade

Benoît Labit

The quasi-continuous exhaust (QCE) regime, formerly known as either type-II ELM or small ELM regime is studied in ASDEX Upgrade. The regime is a natural type-I ELM-free H-mode. The operational space of QCE discharges in ASDEX Upgrade with respect to their ...

IOP Publishing Ltd2023

Statistical properties of electrostatic turbulence in toroidal magnetized plasmas

Ambrogio Fasoli, Ivo Furno, Jan Horacek, Mario Ludovico Podesta, Francesca Maria Poli, Benoît Labit, Gennady Plyushchev, Davoud Iraji, Paolo Ricci, Christian Gabriel Theiler

A unique parabolic relation is observed to link skewness and kurtosis of density fluctuation signals, measured over the whole cross-section of the simple toroidal device TORPEX for a broad range of experimental conditions. This relationship is also valid f ...

2007

Characterization of the electron distribution function in an electron-cyclotron driven toroidal plasma

Ambrogio Fasoli, Ivo Furno, Mario Ludovico Podesta, Francesca Maria Poli, Benoît Labit

The local properties of the electron energy distribution function are investigated in the electron-cyclotron wave driven toroidal device TORPEX (Fasoli et al 2006 Phys. Plasmas 13 055902). The electron energy distribution function is measured by means of a ...

2007

Progress in Pedestal and Edge Physics: Chapter 3 of the Special Issue: on the Path to Tokamak Burning Plasma Operation

Benoît Labit, Umar Sheikh

This paper describes the extensive progress that has been made in the understanding of tokamak pedestal physics since the 2007 publication of 'Progress in the ITER Physics Basis' (Ikeda 2007 Nucl. Fusion 47 E01-S500). It serves as Chapter 3 of the 2025 Nuc ...

IOP Publishing Ltd2025

H-mode access during plasma current ramp-up in TCV

Roland Behn, Yves Martin, Ivo Furno, Holger Reimerdes, Benoît Labit

A recent TCV experiment has investigated the dependence of the L H transition threshold power on the plasma current ramp-rate and the X-point height above the divertor target, which both have previously been seen to affect the transition behaviour. Systema ...

Iop Publishing Ltd2014

Effect of plasma geometry on divertor heat flux spreading: MONALISA simulations and experimental results from TCV

Holger Reimerdes, Benoît Labit, Christian Gabriel Theiler, Federico Nespoli, Roberto Maurizio

Safe ITER operations will rely on power spreading to keep the peak heat flux within divertor material constraints. A solid understanding and parameterization of heat flux profiles is therefore mandatory. This paper focuses on the impact of plasma geometry ...

Elsevier2017

ICRH assisted breakdown study on JET

Thomas Binderup Jensen, Benoît Labit, Haomin Sun

Ion cyclotron (IC) wave assisted breakdown has the potential to increase the robustness of plasma initiation during the ITER pre-fusion operation phase. Studies were performed at JET at ITER relevant loop electric field, E-loop ? 0.33 Vm(-1), and a range o ...

IOP Publishing Ltd2023

JET machine operations in T&D-T

Benoît Labit

JET, the world's largest operating tokamak with unique Be/W wall and tritium handling capability, completed a Deuterium-Tritium (D-T) campaign in 2021 (Maggi et al 29th Fusion Energy Conf.) following a decade of preparatory experiments, dedicated enhanceme ...

IOP Publishing Ltd2024

L-H power threshold for neutral beam heated plasmas with Deuterium, Hydrogen, Helium and mixed ion species in TCV

Basil Duval, Yves Martin, Olivier Sauter, Alexander Karpushov, Benoît Labit, Alessandro Pau, Dmytry Mykytchuk, Artur Perek

A systematic study of the power threshold for L-H transition has been conducted in TCV. Only results from NB heated plasmas are reported. The dependencies of PLH on plasma current, plasma density and main ion species have been investigated. For Deuterium&# ...

IOP Publishing2025

Numerical study of potential heat flux mitigation effects in the TCV snowflake divertor

Basil Duval, Holger Reimerdes, Marco Wischmeier, Benoît Labit, Wouter Vijvers

We report on EMC3-Eirene simulations of the plasma and neutral particle transport the TCV boundary layer of a series of snowflake (SF) equilibria characterized by the normalized poloidal flux coordinate rho(x2) of the secondary X-point x(2). We refer to a ...

2016

TCV divertor upgrade for alternative magnetic configurations

Patrick Blanchard, Stefano Alberti, René Chavan, Basil Duval, Ambrogio Fasoli, Yves Martin, Jean-Marc Moret, Holger Reimerdes, Stefano Coda, Pierluigi Bruzzone, Marco Wischmeier, Duccio Testa, Benoît Labit, Christian Gabriel Theiler, Matthieu Toussaint, Davide Uglietti, Umar Sheikh, Nicola Vianello

The Swiss Plasma Center (SPC) is planning a divertor upgrade for the TCV tokamak. The upgrade aims at extending the research of conventional and alternative divertor configurations to operational scenarios and divertor regimes of greater relevance for a fu ...

Elsevier2017

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

Stefano Coda, Laurie Porte, Benoît Labit, 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

Plasma radiation dynamics with the upgraded Absolute Extreme Ultraviolet tomographical system in the Tokamak a Configuration Variable

René Chavan, Basil Duval, Benoît Labit

We introduce an upgraded version of a tomographical system which is built up from Absolute Extreme Ultraviolet-type (AXUV) detectors and has been installed on the Tokamak a Configuration Variable (TCV). The system is suitable for the investigation of fast ...

Amer Inst Physics2013

Enhanced (E)over-right-arrow x (B)over-right-arrow drift effects in the TCV snowflake divertor

Basil Duval, Holger Reimerdes, Benoît Labit, Wouter Vijvers

Measurements of various plasma parameters at the divertor targets of snowflake (SF) and conventional single-null configurations indicate an enhanced effect of the (E) over right arrow x (B) over right arrow drift in the scrape-off layer of plasmas in the S ...

IOP Publishing Ltd2015

Three-Dimensional Imaging of a Radially Propagating Plasma Blob Using Conditional Sampling Techniques

Ambrogio Fasoli, Ivo Furno, Benoît Labit, Christian Gabriel Theiler

We present 3-D imaging of plasma blobs, generated from ideal interchange turbulence in the TORPEX device, obtained by applying different conditional sampling techniques to electrostatic probe data. Time-evolving spatial profiles of electron density, temper ...

2011

Survey of the Edge Radial Electric Field in L-mode Tcv Plasmas Using Doppler Backscattering

Stefano Coda, Benoît Labit, Yuxuan Wang, Benjamin Alexandre Vincent

A Doppler backscattering (DBS) diagnostic has recently been installed on the Tokamak & agrave; Configuration Variable (TCV) to facilitate the study of edge turbulence and flow shear in a versatile experimental environment. The dual channel V-band DBS syste ...

IOP Publishing Ltd2025

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

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

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

Power distribution in the snowflake divertor in TCV

Basil Duval, Holger Reimerdes, Stefano Coda, Benoît Labit, Wouter Vijvers, Federico Nespoli

TCV experiments demonstrate the basic power exhaust properties of the snowflake (SF) plus and SF minus divertor configurations by measuring the heat fluxes at each of their four divertor legs. The measurements indicate an enhanced transport into the privat ...

Iop Publishing Ltd2013

Mechanism for blob generation in the TORPEX toroidal plasma

Stephan Brunner, Ambrogio Fasoli, Ivo Furno, Jonathan Graves, Mario Ludovico Podesta, Francesca Maria Poli, Benoît Labit, Paolo Ricci, Christian Gabriel Theiler

The mechanism for blob generation is detailed in the toroidal magnetized plasma of the TORPEX device [ Fasoli et al., Phys. Plasmas 13, 055902 (2006) ] using an experimental configuration, which features a plasma region dominated by a coherent wave and a r ...

2008