Publications by Basil Duval | EPFL Graph Search

Initial TCV operation with a baffled divertor

Ambrogio Fasoli, Basil Duval, Jean-Marc Moret, Duccio Testa, Patrick Blanchard, Holger Reimerdes, Christian Gabriel Theiler, Umar Sheikh, Matthieu Toussaint, Marcelo Baquero Ruiz, Artur Perek, Davide Galassi, Cedric Kar-Wai Tsui, Roberto Maurizio, Mirko Wensing, Hugo De Oliveira, Filippo Bagnato, Lorenzo Martinelli, Sophie Danielle Angelica Gorno, Claudia Colandrea, Harshita Raj

The Tokamak à Configuration Variable (TCV) tokamak is in the midst of an upgrade to further its capability to investigate conventional and alternative divertor configurations. To that end, modular and removable gas baffles have been installed to decrease t ...

2021

SOLPS-ITER validation with TCV L-mode discharges

Basil Duval, Patrick Blanchard, Holger Reimerdes, Christian Gabriel Theiler, Marcelo Baquero Ruiz, Artur Perek, Marco Wischmeier, Cedric Kar-Wai Tsui, Kevin Henricus Annemarie Verhaegh, Mirko Wensing, Hugo De Oliveira, Filippo Bagnato, Lorenzo Martinelli, Sophie Danielle Angelica Gorno, Claudia Colandrea

This work presents a quantitative test of SOLPS-ITER simulations against tokamak a configuration variable (TCV) L-mode experiments. These simulations account for drifts, currents, kinetic neutrals, and carbon impurities providing the most complete edge tra ...

AMER INST PHYSICS2021

The role of plasma-molecule interactions on power and particle balance during detachment on the TCV tokamak

Basil Duval, Christian Gabriel Theiler, Artur Perek, Kevin Henricus Annemarie Verhaegh, Mirko Wensing

This paper shows experimental results from the TCV tokamak that indicate plasma-molecule interactions involving D2+

IOP PUBLISHING LTD2021

H-mode physics studies on TCV supported by the EUROfusion pedestal database

Olivier Sauter, Basil Duval, Stefano Coda, Benoît Labit, Laurie Porte, Antoine Pierre Emmanuel Alexis Merle, Umar Sheikh

The paper is an overview of the H-mode physics studies on TCV. Historically, ELMy H-modes were obtained with ohmic heating only (q95

2021

Disruption mitigation efficiency and scaling with thermal energy fraction on ASDEX Upgrade

Basil Duval, Umar Sheikh, Gergely Papp

Disruption mitigation remains a critical and unresolved issue for ITER. Measurement uncertainties preventing quantification of a system's efficacy remains a significant hurdle in producing and validating a viable disruption mitigation system. This study ad ...

2020

Nitrogen-seeded divertor detachment in TCV L-mode plasmas

Basil Duval, Holger Reimerdes, Benoît Labit, Christian Gabriel Theiler, Cedric Kar-Wai Tsui, Kevin Henricus Annemarie Verhaegh, Roberto Maurizio, Hugo De Oliveira

Most of the detachment experiments done to date on the tokamak a configuration variable (TCV), both in standard and alternative divertor geometries, focused on L-mode integrated core density ramps. In view of extending these studies to high-power, high-con ...

2020

Comparison of high density and nitrogen seeded detachment using SOLPS-ITER simulations of the tokamak a configuration variable

Basil Duval, Holger Reimerdes, Christian Gabriel Theiler, Kevin Henricus Annemarie Verhaegh, Mirko Wensing, Hugo De Oliveira, Lorenzo Martinelli

First of a kind SOLPS-ITER simulations on tokamak a configuration variable (TCV) that include nitrogen have been performed to model recent nitrogen seeded detachment experiments. Based on spectroscopic measurements, a nitrogen recycling coefficient R-p(N) ...

IOP PUBLISHING LTD2020

TCV heating and divertor upgrades

Ambrogio Fasoli, Basil Duval, Jean-Marc Moret, Stefano Alberti, Holger Reimerdes, Christian Gabriel Theiler, Alexander Karpushov, Matthieu Toussaint, Marcelo Baquero Ruiz, Dario Vaccaro

The operational range and the reactor relevance of the TCV experiments are being enhanced by two sets of major upgrades. The first includes the installation of neutral beam injection (NBI) and new electron cyclotron (EC) auxiliary heating sources, to reach ...

IOP PUBLISHING LTD2020

Experimental verification of X-point potential well formation in unfavorable magnetic field direction

Basil Duval, Holger Reimerdes, Christian Gabriel Theiler, Joaquim Loizu Cisquella, Marco Wischmeier, Cedric Kar-Wai Tsui, Mirko Wensing, Hugo De Oliveira, Sophie Danielle Angelica Gorno, Claudia Colandrea

Recent TCV experiments confirm the predicted formation of an electric potential well, below the magnetic X-point, in configurations with unfavorable

B_t

field direction (ion

\nabla B

drift away from the divertor), that substantially reshapes the typica ...

2020

X-point potential well formation in diverted tokamaks with unfavorable magnetic field direction

Basil Duval, Holger Reimerdes, Joaquim Loizu Cisquella, Marco Wischmeier, Mirko Wensing

Fluid simulations of the boundary of fusion plasmas predict the formation of an electric potential well in the vicinity of the X-point in detached divertor conditions with Bt in the unfavorable direction for H-mode access. This potential well arises when t ...

2020

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Initial TCV operation with a baffled divertor

SOLPS-ITER validation with TCV L-mode discharges

The role of plasma-molecule interactions on power and particle balance during detachment on the TCV tokamak

H-mode physics studies on TCV supported by the EUROfusion pedestal database

Disruption mitigation efficiency and scaling with thermal energy fraction on ASDEX Upgrade

Nitrogen-seeded divertor detachment in TCV L-mode plasmas

Comparison of high density and nitrogen seeded detachment using SOLPS-ITER simulations of the tokamak a configuration variable

TCV heating and divertor upgrades

Experimental verification of X-point potential well formation in unfavorable magnetic field direction

X-point potential well formation in diverted tokamaks with unfavorable magnetic field direction

H-mode physics studies on TCV supported by the EUROfusion pedestal database

Disruption mitigation efficiency and scaling with thermal energy fraction on ASDEX Upgrade

Nitrogen-seeded divertor detachment in TCV L-mode plasmas

Comparison of high density and nitrogen seeded detachment using SOLPS-ITER simulations of the tokamak a configuration variable

The role of plasma-molecule interactions on power and particle balance during detachment on the TCV tokamak

Experimental verification of X-point potential well formation in unfavorable magnetic field direction

X-point potential well formation in diverted tokamaks with unfavorable magnetic field direction

SOLPS-ITER validation with TCV L-mode discharges

Initial TCV operation with a baffled divertor

TCV heating and divertor upgrades