Publications de Garance Hélène Salomé Durr-Legoupil-Nicoud

Dependence of divertor turbulence on plasma density and current in TCV

Basil Duval, Christian Gabriel Theiler, Garance Hélène Salomé Durr-Legoupil-Nicoud, Davide Galassi, Curdin Tobias Wüthrich, Nicola Offeddu

To reliably predict the distribution of heat and particle fluxes at the target plates of tokamaks, a comprehensive understanding of turbulence throughout the entire Scrape-Off-Layer (SOL) is imperative. This study examines divertor turbulence systematicall ...

IOP Publishing Ltd2025

𝑋-Point Target Radiator Regime in Tokamak Divertor Plasmas

Basil Duval, Holger Reimerdes, Christian Gabriel Theiler, Artur Perek, Luke Simons, Garance Hélène Salomé Durr-Legoupil-Nicoud, Daniele Hamm, Francesco Pastore, Sophie Danielle Angelica Gorno, Curdin Tobias Wüthrich

Fusion plasma regimes with a strongly radiating magnetic 𝑋 point are promising candidates to tackle the outstanding power exhaust challenge in reactor-scale devices. In this Letter, we report on a new type of 𝑋-point radiator, the XPTR (𝑋-point target radi ...

American Physical Society (APS)2025

Parallel flows as a key component to interpret Super-X divertor experiments

Basil Duval, Holger Reimerdes, Christian Gabriel Theiler, Joaquim Loizu Cisquella, Artur Perek, Guang-Yu Sun, Luke Simons, Olivier Claude Martin Février, Garance Hélène Salomé Durr-Legoupil-Nicoud, Davide Galassi

The Super-X Divertor (SXD) is an alternative divertor configuration leveraging total flux expansion at the Outer Strike Point (OSP). While the extended 2-Point Model (2PM) predicts facilitated detachment access and control in the SXD configuration, these a ...

IOP Publishing Ltd2024

Predictive power-sharing scaling law in double-null L-mode plasmas

Paolo Ricci, Christian Gabriel Theiler, Louis Nicolas Stenger, Garance Hélène Salomé Durr-Legoupil-Nicoud, Olivier Claude Martin Février

The physical mechanisms regulating the power sharing at the outer targets of L-mode double-null (DN) configurations are investigated using nonlinear, flux-driven, three-dimensional two-fluid simulations. Scans of parameters that regulate the turbulent leve ...

IOP Publishing Ltd2024

Comparison of detachment in Ohmic plasmas with positive and negative triangularity

Olivier Sauter, Basil Duval, Stefano Coda, Holger Reimerdes, Christian Gabriel Theiler, Laurie Porte, Artur Perek, Garance Hélène Salomé Durr-Legoupil-Nicoud, Olivier Claude Martin Février, Sophie Danielle Angelica Gorno

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

X-point radiator and power exhaust control in configurations with multiple X-points in TCV

Holger Reimerdes, Christian Gabriel Theiler, Federico Alberto Alfredo Felici, Antoine Pierre Emmanuel Alexis Merle, Artur Perek, Guang-Yu Sun, Luke Simons, Garance Hélène Salomé Durr-Legoupil-Nicoud, Olivier Claude Martin Février, Filippo Bagnato

Novel power exhaust solutions are being developed to address the challenge of integrating a high performance fusion core plasma with a well-protected divertor, if the single null configuration does not scale to a reactor device. This work aims to elucidate ...

American Institute of Physics (AIP)2024

Experimental research on the TCV tokamak

Olivier Sauter, Ambrogio Fasoli, Stefano Coda, Timothy Goodman, Yves Martin, Stefano Alberti, Ivo Furno, Duccio Testa, Patrick Blanchard, Holger Reimerdes

Tokamak à configuration variable (TCV), recently celebrating 30 years of near-continual operation, continues in its missions to advance outstanding key physics and operational scenario issues for ITER and the design of future power plants such as DEMO. The ...

IOP Publishing Ltd2024

Overview of the EUROfusion Tokamak Exploitation programme in support of ITER and DEMO

Olivier Sauter, Basil Duval, Stefano Coda, Timothy Goodman, Jean-Marc Moret, Duccio Testa, Patrick Blanchard, Holger Reimerdes, Benoît Labit, Christian Gabriel Theiler

Within the 9th European Framework programme, since 2021 EUROfusion is operating five tokamaks under the auspices of a single Task Force called ‘Tokamak Exploitation’. The goal is to benefit from the complementary capabilities of each machine in a coordinat ...

IOP Publishing Ltd2024

Modelling of power exhaust in TCV positive and negative triangularity L-mode plasmas

Holger Reimerdes, Christian Gabriel Theiler, Garance Hélène Salomé Durr-Legoupil-Nicoud, Olivier Claude Martin Février, Sophie Danielle Angelica Gorno

L-mode negative triangularity (NT) operation is a promising alternative to the positive triangularity (PT) H-mode as a high-confinement edge localised mode-free operational regime. In this work, two TCV Ohmic L-mode core density ramps with opposite triangu ...

Iop Publishing Ltd2024

SPLEND1D, a reduced one-dimensional model to investigate the physics of plasma detachment

Christian Gabriel Theiler, Garance Hélène Salomé Durr-Legoupil-Nicoud, Olivier Claude Martin Février, Sophie Danielle Angelica Gorno, Kim Dimuth Von Allmen

Studying the process of divertor detachment and the associated complex interplay of plasma dynamics and atomic physics processes is of utmost importance for future fusion reactors. While simplified analytical models exist to interpret the general features ...

American Institute of Physics (AIP)2024