Publications by Antoine Pierre Emmanuel Alexis Merle

Related publications (73)

Dependence of the L-Mode scrape-off layer power fall-off length on the upper triangularity in TCV

Stefano Coda, Benoît Labit, Holger Reimerdes, Christian Gabriel Theiler, Antoine Pierre Emmanuel Alexis Merle, Roberto Maurizio

This paper reports on experimental observations on TCV with a scan in upper triangularity

{\delta }_{\mathrm{up}}

, including negative triangularity, focusing on the power fall-off length

{\lambda }_{{\rm{q}}}

in L-Mode. The upper triangularity is scann ...

2018

A Variable Structure Control Scheme Proposal for the Tokamak a Configuration Variable

Olivier Sauter, Ambrogio Fasoli, Stefano Coda, Basil Duval, Henri Weisen, Timothy Goodman, Yves Martin, Yann Camenen, Jan Horacek, Duccio Testa, Marco Wischmeier, Jean-Marc Moret, Ivo Furno, Nicola Vianello, Minh Quang Tran, Patrick Blanchard, Alessandro Pau, Federico Alberto Alfredo Felici, Benoît Labit, Paolo Ricci, Jean-Philippe Hogge, Jonathan Graves, Holger Reimerdes, Laurie Porte, Christian Gabriel Theiler, Alexander Karpushov, Cedric Kar-Wai Tsui, Federico Nespoli, Kevin Henricus Annemarie Verhaegh, Antoine Pierre Emmanuel Alexis Merle, Umar Sheikh, Wouter Vijvers, Xavier Llobet, Christian Schlatter, Yanis Andrebe, Cristian Galperti, Joan Decker, Zhouji Huang, Fabio Riva, Mengdi Kong, Rémy Jacquier, Anna Teplukhina, Roberto Maurizio, Oulfa Chellaï, Francesco Carpanese, Falk Hans Braunmüller, Claudio Marini, Himank Anand, Dahye Choi, Hoang Bao Le, Josef Kamleitner, Joyeeta Sinha, Anton Malygin, Mélanie Preynas, Joshua Nathaniel Hawke

Fusion power is the most significant prospects in the long-term future of energy in the sense that it composes a potentially clean, cheap, and unlimited power source that would substitute the widespread traditional nonrenewable energies, reducing the geogr ...

2019

Sliding Surface Based Schemes for the Tokamak a Configuration Variable

Olivier Sauter, Ambrogio Fasoli, Stefano Coda, Basil Duval, Henri Weisen, Timothy Goodman, Yves Martin, Stefano Alberti, Yann Camenen, Jan Horacek, Duccio Testa, Marco Wischmeier, Jean-Marc Moret, Ivo Furno, Minh Quang Tran, Patrick Blanchard, Alessandro Pau, Federico Alberto Alfredo Felici, Benoît Labit, Paolo Ricci, Jean-Philippe Hogge, Jonathan Graves, Holger Reimerdes, Laurie Porte, Christian Gabriel Theiler, Alexander Karpushov, Bernard Schneider, Federico Nespoli, Kevin Henricus Annemarie Verhaegh, Antoine Pierre Emmanuel Alexis Merle, Umar Sheikh, Wouter Vijvers, Xavier Llobet, Christian Schlatter, Matteo Fontana, Yanis Andrebe, Cristian Galperti, Joan Decker, Cedric Kar-Wai Tsui, Fabio Riva, Mengdi Kong, Nicola Vianello, Rémy Jacquier, Pedro Andres Molina Cabrera, Anna Teplukhina, Zhouji Huang, Roberto Maurizio, Oulfa Chellaï, Francesco Carpanese, Falk Hans Braunmüller, Claudio Marini, Himank Anand, Dahye Choi, Hoang Bao Le, Josef Kamleitner, Miguel Filipe Silva Füglister, Joyeeta Sinha, Anton Malygin, Mélanie Preynas, Joshua Nathaniel Hawke

Fusion power may be seen as the energy of the future in the sense that it composes a potentially clean, cheap and unlimited power source that would reduce the worldwide dependency on non-renewable energies. Nevertheless, while nowadays the fusion reaction ...

IEEE2018

Experimental research on the TCV tokamak

Flavio Mauricio Martins E Silva, Vincent Masson, Abhilash Mathews, Olivier Sauter, Ambrogio Fasoli, Stefano Coda, Henri Weisen, Timothy Goodman, Yves Martin, Stefano Alberti, Duccio Testa, Ivo Furno, Patrick Blanchard, Benoît Labit, Jean-Philippe Hogge, Holger Reimerdes, Christian Gabriel Theiler, Federico Alberto Alfredo Felici, Alexander Karpushov, Antoine Pierre Emmanuel Alexis Merle, Umar Sheikh, Simon Van Mulders, Alessandro Pau, Yanis Andrebe, Cristian Galperti, Joan Decker, Jérémy Genoud, Marcelo Baquero Ruiz, Cedric Kar-Wai Tsui, Mengdi Kong, Matteo Vallar, Olivier Claude Martin Février, Davide Galassi, Guang-Yu Sun, Pedro Andres Molina Cabrera, Filippo Bagnato, Artur Perek, Claudia Colandrea, Sophie Danielle Angelica Gorno, Francesco Carpanese, Nicola Offeddu, Luke Simons, Aylwin Iantchenko, Maurizio Giacomin, Lorenzo Martinelli, Oleg Krutkin, Antoine Baillod, Federico Pesamosca, Dmytry Mykytchuk, Jesús Poley Sanjuán, Carl Mathias Paul Hoppe, Hugo De Oliveira, Benjamin Alexandre Vincent, Umesh Kumar, Garance Hélène Salomé Durr-Legoupil-Nicoud, Arsène Stéphane Tema Biwole, Massimo Carpita, Jean Arthur Cazabonne, Yuxuan Wang, Davide Mancini, Cassandre Ekta Contré, Stefano Marchioni, Samuele Mazzi, Reinart Andreas J. Coosemans, Gino Marceca, Renat Karimov, Elena Tonello, Michele Marin, Martim Zurita, Alessandro Balestri, Humberto Torreblanca Quiroz, Francesco Pastore, Daniele Hamm, Mackenzie Peter-Fulford Van Rossem, Emanuel Paul Huett, Nam Axel David Vu, Marta Mariarmanda Pedrini, Cristina Venturini, Hari Raj, Antonia Frank, Silvia Masillo

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

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, Olivier Claude Martin Février, Guang-Yu Sun, Filippo Bagnato, Artur Perek, Claudia Colandrea, Curdin Tobias Wüthrich, Sophie Danielle Angelica Gorno, Luke Simons, Lorenzo Martinelli, Garance Hélène Salomé Durr-Legoupil-Nicoud, Richard Alexander David Ducker, Ming Yin Kenneth Lee

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

Overview of ASDEX upgrade results in view of ITER and DEMO

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

Experiments on ASDEX Upgrade (AUG) in 2021 and 2022 have addressed a number of critical issues for ITER and EU DEMO. A major objective of the AUG programme is to shed light on the underlying physics of confinement, stability, and plasma exhaust in order to ...

IOP Publishing Ltd2024

Pedestal structure and energy confinement studies on TCV

Olivier Sauter, Basil Duval, Patrick Blanchard, Benoît Labit, Christian Gabriel Theiler, Umar Sheikh, Antoine Pierre Emmanuel Alexis Merle, Cedric Kar-Wai Tsui

High external gas injection rates are foreseen for future devices to reduce divertor heat loads and this can influence pedestal stability. Fusion yield has been estimated to vary as strongly as T-e,ped(2) so an understanding of the underlying pedestal phys ...

2019

TCV Tokamak Neutron Shielding Upgrade for Dual NBI Operation

Basil Duval, Henri Weisen, Duccio Testa, Patrick Blanchard, Alexander Karpushov, Antoine Pierre Emmanuel Alexis Merle, Matteo Vallar, Jérémie Dubray

The Tokamak a Configuration variable (TCV) is equipped with two neutral beam injection (NBI) systems delivering up to 1.2 MW each for pulse durations of up to 2 s. The first system (NBI1), designed for an injection energy in the range of 25 to 30 keV has b ...

2023

Effect of energetic ions on edge-localized modes in tokamak plasmas

Matthew Paul Goodman, Zhuosheng Huang, Olivier Sauter, Stefano Coda, Timothy Goodman, Duccio Testa, Jean-Marc Moret, Patrick Blanchard, Benoît Labit, Holger Reimerdes, Christian Gabriel Theiler, Federico Alberto Alfredo Felici, Alexander Karpushov, Antoine Pierre Emmanuel Alexis Merle, Umar Sheikh, Yanis Andrebe, Cristian Galperti, Joan Decker, Cedric Kar-Wai Tsui, Mengdi Kong, Olivier Claude Martin Février, Davide Galassi, Cristian Sommariva, Anna Teplukhina, Filippo Bagnato, Roberto Maurizio, Kevin Henricus Annemarie Verhaegh, Mirko Wensing, Francesco Carpanese, Claudio Marini, Aylwin Iantchenko, Dahye Choi, Federico Pesamosca, Hugo Antoine Georges Arnichand, Hugo De Oliveira, Lorenzo Stipani, Joshua Nathaniel Hawke, Nam Axel David Vu

The most efficient and promising operational regime for the International Thermonuclear Experimental Reactor tokamak is the high-confinement mode. In this regime, however, periodic relaxations of the plasma edge can occur. These edge-localized modes pose a ...

2025

Overview of physics studies on ASDEX Upgrade

Olivier Sauter, Richard Pitts, Stefano Coda, Basil Duval, Timothy Goodman, Yann Camenen, Marco Wischmeier, Nicola Vianello, Alessandro Pau, Cristian Sommariva, Benoît Labit, Laurie Porte, Alberto Bottino, Federico Alberto Alfredo Felici, Emiliano Fable, Antoine Pierre Emmanuel Alexis Merle, Andrea Scarabosio, Alessandro Bortolon, Haomin Sun, Dávid Wágner, Fang Liu, Thomas Binderup Jensen

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

Self-consistent pedestal prediction for JET-ILW in preparation of the DT campaign

Yiming Li, Olivier Sauter, Richard Pitts, Ambrogio Fasoli, Basil Duval, Henri Weisen, Yann Camenen, Jan Horacek, Javier García Hernández, Duccio Testa, Marco Wischmeier, Nicola Vianello, Mikhail Maslov, Patrick Blanchard, Alessandro Pau, Davide Galassi, Antonio José Pereira de Figueiredo, Jonathan Graves, Federico Alberto Alfredo Felici, Emiliano Fable, Francesca Maria Poli, Federico Nespoli, Antoine Pierre Emmanuel Alexis Merle, Daniele Brunetti, Hamish William Patten, Samuel Lanthaler, Haomin Sun, Alberto Mariani, Cristian Sommariva, Michele Marin, Anna Teplukhina, Paulo Giovane Paschoali Pereira Puglia, Eduardo José Lascas Neto

The self-consistent core-pedestal prediction model of a combination of EPED1 type pedestal prediction and a simple stiff core transport model is able to predict Type I ELMy (edge localized mode) pedestals of a large JET-ILW (ITER-like wall) database at the ...

2019

Towards self-consistent plasma modelisation in presence of neoclassical tearing mode and sawteeth: effects on transport coefficients

Olivier Sauter, Antoine Pierre Emmanuel Alexis Merle

The neoclassical tearing modes (NTM) increase the effective heat and particle radial transport inside the plasma, leading to a flattening of the electron and ion temperature and density profiles at a given location depending on the safety factor q rational ...

2017

Role of the pedestal position on the pedestal performance in AUG, JET-ILW and TCV and implications for ITER

Stefano Coda, Patrick Blanchard, Benoît Labit, Antoine Pierre Emmanuel Alexis Merle, Umar Sheikh, Pamela Solange Valdés Undurraga, Lenke Horváth

The role of the pedestal position on the pedestal performance has been investigated in AUG, JET-ILW and TCV. When the pedestal is peeling-ballooning (PB) limited, the three machines show a similar behaviour. The outward shift of the pedestal density relati ...

IOP Publishing Ltd2019

Progress from ASDEX Upgrade experiments in preparing the physics basis of ITER operation and DEMO scenario development

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

An overview of recent results obtained at the tokamak ASDEX Upgrade (AUG) is given. A work flow for predictive profile modelling of AUG discharges was established which is able to reproduce experimental H-mode plasma profiles based on engineering parameter ...

IOP Publishing Ltd2022

Deep neural networks for plasma tomography with applications to JET and COMPASS

Yiming Li, Olivier Sauter, Richard Pitts, Ambrogio Fasoli, Basil Duval, Henri Weisen, Yann Camenen, Jan Horacek, Javier García Hernández, Duccio Testa, Marco Wischmeier, Nicola Vianello, Mikhail Maslov, Patrick Blanchard, Alessandro Pau, Davide Galassi, Federico Alberto Alfredo Felici, Antonio José Pereira de Figueiredo, Cristian Sommariva, Jonathan Graves, Emiliano Fable, Dalziel Joseph Wilson, Francesca Maria Poli, Antoine Pierre Emmanuel Alexis Merle, Federico Nespoli, Daniele Brunetti, Anna Teplukhina, Hamish William Patten, Samuel Lanthaler, Haomin Sun, Alberto Mariani, Michele Marin

Convolutional neural networks (CNNs) have found applications in many image processing tasks, such as feature extraction, image classification, and object recognition. It has also been shown that the inverse of CNNs, so-called deconvolutional neural network ...

2019

Code Integration, Data Verification, and Models Validation Using the ITER Integrated Modeling and Analysis System (IMAS) in EUROfusion

Olivier Sauter, José Pedro Rebelo Ferreira Marques, Antoine Pierre Emmanuel Alexis Merle

The ITER Integrated Modelling and Analysis System (IMAS) has been adopted by the EUROfusion Consortium as a platform to facilitate the analysis and verification of data from multiple tokamaks for the integration of physics codes and the validation of physi ...

2020

Magnetic control of tokamak plasmas through deep reinforcement learning

Olivier Sauter, Basil Duval, Stefano Coda, Ambrogio Fasoli, Jean-Marc Moret, Federico Alberto Alfredo Felici, Cristian Sommariva, Antoine Pierre Emmanuel Alexis Merle, Cristian Galperti, Jonas Buchli, Francesco Carpanese, Federico Pesamosca

Nuclear fusion using magnetic confinement, in particular in the tokamak configuration, is a promising path towards sustainable energy. A core challenge is to shape and maintain a high-temperature plasma within the tokamak vessel. This requires high-dimensi ...

2022

First demonstration of real-time kinetic equilibrium reconstruction on TCV by coupling LIUQE and RAPTOR

Olivier Sauter, Jean-Marc Moret, Federico Alberto Alfredo Felici, Antoine Pierre Emmanuel Alexis Merle, Cristian Galperti, Francesco Carpanese

Kinetic equilibrium reconstruction (KER) in tokamaks is the solution of the free-boundary MHD equilibrium that best fits the external magnetic measurements and the internal plasma profiles as imposed from modeling and/or available internal measurements. In ...

IOP Publishing Ltd2020

Observation of magnetic islands in tokamak plasmas during the suppression of edge-localized modes

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

In tokamaks, a leading platform for fusion energy, periodic filamentary plasma eruptions known as edge-localized modes occur in plasmas with high-energy confinement and steep pressure profiles at the plasma edge. These edge-localized modes could damage the ...

2024

On the non-stiffness of edge transport in L-mode tokamak plasmas

Olivier Sauter, Basil Duval, Stefano Coda, Timothy Goodman, Stephan Brunner, Alexander Karpushov, Antoine Pierre Emmanuel Alexis Merle, Yann Camenen, Roland Behn, Doohyun Kim, Gabriele Merlo, Lucia Isabel Federspiel

Transport analyses using first-principle turbulence codes and 11/2-D transport codes usually study radial transport properties between the tokamak plasma magnetic axis and a normalized minor radius around 0.8. In this region, heat transport shows significa ...

Amer Inst Physics2014