Publications by Timothy Goodman

Related publications (178)

Recent ASDEX Upgrade research in support of ITER and DEMO

Olivier Sauter, Basil Duval, Stefano Coda, Timothy Goodman, Alessandro Pau, Federico Alberto Alfredo Felici, Laurie Porte, Haomin Sun, Yann Camenen, Marco Wischmeier, Nicola Vianello, Alberto Bottino, Emiliano Fable, Andrea Scarabosio, Doohyun Kim, Dávid Wágner, Thomas Binderup Jensen

Recent experiments on the ASDEX Upgrade tokamak aim at improving the physics base for ITER and DEMO to aid the machine design and prepare efficient operation. Type I edge localized mode (ELM) mitigation using resonant magnetic perturbations (RMPs) has been ...

Iop Publishing Ltd2015

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

3rd harmonic ECRH absorption enhancement by 2nd harmonic heating at the same frequency in a tokamak

Stefano Coda, Timothy Goodman, Joan Decker, Silvano Gnesin

The fundamental mechanisms responsible for the interplay and synergy between the absorption dynamics of extraordinary-mode electron cyclotron waves at two different harmonic resonances (the 2nd and 3rd) are investigated in the TCV tokamak. An enhanced 3rd ...

2012

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

Pre-conceptual design of the fixed mirrors for the DEMO Electron Cyclotron Heating antenna

Timothy Goodman, Jean-Philippe Hogge, René Chavan, Avelino Mas Sanchez, Anastasia Xydou, Cinta Lucia Marraco Borderas, Daniel Birlan, Humberto Torreblanca Quiroz, Marc Noël, Arnaud Clément

The M1 mirrors are part of the in -vessel quasi -optical Electron Cyclotron beam propagation system of the DEMO nuclear fusion reactor. These four mirrors are all non -movable and with a plane reflecting surface. Based on their functionality they are divid ...

Elsevier Science Sa2024

The ITER EC H&CD upper launcher: Structural design

Timothy Goodman, René Chavan, Jean-Daniel Landis

Four ITER EC H&CD (Electron Cyclotron Heating and Current Drive) Upper Launchers will be installed in the ITER Tokamak to counteract plasma instabilities by injection of up to 20 MW of millimeter-wave power at 170 GHz. Each Launcher features a structural s ...

Elsevier2011

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

Electron trapping in gyrotron electron guns: Validation of the FENNECS code with the T-REX experiment

Guillaume Michel Le Bars, Timothy Goodman, Stefano Alberti, Jean-Philippe Hogge, Mario Ludovico Podesta, Joaquim Loizu Cisquella, Jérémy Genoud, Falk Hans Braunmüller, Francesco Romano, Pierrick Paul Louis Giroud-Garampon

Gyrotrons are essential devices for the development of nuclear fusion, but their design and reliable operation still present numerous challenges. In particular, certain gyrotrons encounter issues related to trapped electron clouds in the magnetron injectio ...

AIP Publishing2025

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

Distributed digital real-time control system for the TCV tokamak and its applications

Olivier Sauter, Basil Duval, Stefano Coda, Timothy Goodman, Jean-Marc Moret, Federico Alberto Alfredo Felici, Cristian Galperti, Doohyun Kim, Himank Anand

A key feature of the new digital plasma control system installed on the TCV (Tokamak à Configuration Variable) tokamak is its possibility to rapidly design, test and deploy real-time algorithms. It accommodates hundreds of diagnostic inputs and actuator ou ...

IOP Publishing Ltd2017

High power mm-wave loss measurements of ITER ex-vessel waveguide components at the FALCON test facility at the Swiss Plasma Center

Timothy Goodman, René Chavan, Avelino Mas Sanchez, Anastasia Xydou, Cinta Lucia Marraco Borderas, Humberto Torreblanca Quiroz

Many future fusion devices will rely heavily, if not solely, on electron cyclotron (EC) heating subsystems to provide bulk heating, instability control (neoclassical tearing mode (NTM) stabilization), and thermal instability control. Efficient use of the i ...

E D P SCIENCES2023

Safety factor profile requirements for electron ITB formation in TCV

Olivier Sauter, Stefano Coda, Ambrogio Fasoli, Basil Duval, Henri Weisen, Jonathan Bryan Lister, Timothy Goodman, Richard Pitts, Yves Martin, Stefano Alberti, Yann Camenen, Antoine Pochelon, Jean-Marc Moret, Sun Hee Kim, Minh Quang Tran, Kurt Appert, Roland Behn, Jan Horacek, Jean-Philippe Hogge, René Chavan, Laurie Porte, Mikhail Maslov, Marco Wischmeier, Markus Siegrist, Alexander Karpushov, Alberto Bottino, Damien Fasel, Emiliano Fable, Petri Nikkola, Philippe Marmillod, Costanza Zucca, Gilbert Tonetti, Andrei Martynov, Andrea Scarabosio, Xavier Llobet, Christian Schlatter, Alessandro Bortolon, Albert Perez, Gilles Arnoux, Yanis Andrebe, Blaise Marlétaz, Alessandro Marinoni, Ugo Siravo, Pierre Lavanchy, Igor Klimanov, Barbora Bruant Gulejová, Pierre-François Isoz, Alexey Zabolotskiy, Jonathan Rossel, Emmanuel Droz, Jean-Claude Magnin, Ilya Pavlov, Karin Schombourg, Pierre Etienne

On the Tokamak a Configuration Variable (TCV), electron internal transport barriers (eITBs) can be formed during a gradual evolution from a centrally peaked to a hollow current profile while all external actuators are held constant. The formation occurs ra ...

2005

Fast polarizers installation for ECRH and ECE in TCV

Timothy Goodman, Laurie Porte, Federico Alberto Alfredo Felici

We report on the installation of fast polarizers for ECRH injection and ECE diagnostics, in the TCV tokamak. The main goal is to change the polarization during a plasma shot and react to changing conditions such as: plasma current and position, ECRH inject ...

2010

Design and Thermal-Structural Analyses of Ancillary Components for the Optical Steering Mirror (M4) for the ITER ECH Upper Launcher

Timothy Goodman, René Chavan, Avelino Mas Sanchez, Matteo Vagnoni, Phillip Miguel Santos Silva

Each of the four ITER Electron Cyclotron Heating Upper Launcher (ECHUL) features eight transmission lines (TLs) that are used to inject 170-GHz microwave power into the plasma at a level of up to 1.31 MW (at the TL diamond window) per line. The millimeter ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2020

Overview of the ITER EC H&CD system and its capabilities

Olivier Sauter, Timothy Goodman, Stefano Alberti, Jean-Philippe Hogge, Minh Quang Tran, René Chavan, Laurie Porte, Francisco Sanchez, Ioannis Pagonakis, Jean-Daniel Landis, Robert Bertizzolo

The Electron Cyclotron (EC) system for the ITER tokamak is designed to inject >= 20 MW RF power into the plasma for Heating and Current Drive (H&CD) applications. The EC system consists of up to 26 gyrotrons (between 1 and 2 MW each), the associated power ...

Elsevier2011

Sawtooth control in fusion plasmas

Olivier Sauter, Jonathan Graves, Stefano Coda, Timothy Goodman, Andrei Martynov

Clear observations of early triggering of neo-classical tearing modes by sawteeth with long quiescent periods have motivated recent efforts to control, and in particular destabilize, sawteeth. One successful approach explored in TCV utilizes electron cyclo ...

2005

Progress of the ECRH Upper Launcher design for ITER

Olivier Sauter, Timothy Goodman, René Chavan, Jean-Daniel Landis, Francisco Sanchez

The design of the ITER ECRH system provides 20 MW millimeter wave power for central plasma heating and MHD stabilization. The system consists of an array of 24 gyrotrons with power supplies coupled to a set of transmission lines guiding the beams to the fo ...

Elsevier Science Sa2014

Nearing final design of the ITER EC H&CD Upper Launcher

Olivier Sauter, Timothy Goodman, René Chavan, Robert Bertizzolo, Jean-Daniel Landis, Matteo Vagnoni, Florian Ramseyer

The ITER ECRH system consists of 24 gyrotrons with up to 24 MW installed millimeter wave heating power at 170 GHz, power supplies, control system, transmission lines, one Equatorial and the four Upper Launchers. With its high frequency and small beam focus ...

ELSEVIER SCIENCE SA2019

Design status of the double Closure Plate Sub-Plate concept for the ITER Electron Cyclotron Upper Launcher

Timothy Goodman, René Chavan, Jean-Daniel Landis, Avelino Mas Sanchez, Matteo Vagnoni, Phillip Miguel Santos Silva, Florian Ramseyer

The Closure Plate Sub-Plate (CPSP), which defines the border between ex-vessel and in-vessel components of the Electron Cyclotron Upper Launcher (EC UL), bundles the waveguides into a sub-assembly which can be manipulated separately from the UL Port Plug ( ...

Elsevier2018