Publications related to Vertical Instability Studies in the TCV Tokamak and Development and Application of Multimachine Real-Time Proximity Control Strategies

Related publications (14)

The quasi-continuous exhaust regime in JET

The quasi-continuous exhaust (QCE) regime is a regime that is naturally type-I ELM-free. It combines the high density at the plasma edge needed for power exhaust with the high normalised energy confinement typical for H-mode operation. In the QCE regime la ...

IOP Publishing Ltd2025

Generalization of a fast, predictive model for tokamak scenario design in ASTRA and comparison to a RAPTOR model

Simon Van Mulders

Early heating tokamak plasmas during the current ramp-up is a common approach to efficiently access advanced tokamak (AT) configurations. We have previously presented an analytical predictive model to aid in the AT scenario design, optimized for a single s ...

IOP Publishing Ltd2025

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

Stefano Alberti, Timothy Goodman, Jean-Philippe Hogge, Mario Ludovico Podesta, Joaquim Loizu Cisquella, Jérémy Genoud, Guillaume Michel Le Bars, 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

A control oriented strategy of disruption prediction to avoid the configuration collapse of tokamak reactors

Patrick Blanchard, Ambrogio Fasoli, Olivier Sauter, Henri Weisen, Duccio Testa, Federico Alberto Alfredo Felici, Umar Sheikh, Paulo Giovane Paschoali Pereira Puglia, Eduardo José Lascas Neto, Cristian Sommariva, Davide Galassi, Mike Machielsen, Alessandro Pau, Gino Marceca

The objective of thermonuclear fusion consists of producing electricity from the coalescence of light nuclei in high temperature plasmas. The most promising route to fusion envisages the confinement of such plasmas with magnetic fields, whose most studied ...

Nature Research2024

Rigorous Dynamical Mean-Field Theory for Stochastic Gradient Descent Methods

Florent Gérard Krzakala, Lenka Zdeborová, Emanuele Troiani

We prove closed-form equations for the exact high-dimensional asymptotics of a family of first-order gradient-based methods, learning an estimator (e.g., M-estimator, shallow neural network) from observations on Gaussian data with empirical risk minimizati ...

Society for Industrial & Applied Mathematics (SIAM)2024

Fast dynamic 1D simulation of divertor plasmas with neural PDE surrogates

Yoeri Renier Johannes Poels

Managing divertor plasmas is crucial for operating reactor scale tokamak devices due to heat and particle flux constraints on the divertor target. Simulation is an important tool to understand and control these plasmas, however, for real-time applications ...

IOP Publishing Ltd2023

Self-consistent gyrokinetic modeling of turbulent and neoclassical tungsten transport in toroidally rotating plasmas

Kyungtak Lim

The effect of toroidal rotation on both turbulent and neoclassical transport of tungsten (W) in tokamaks is investigated using the flux-driven, global, nonlinear 5D gyrokinetic code GYSELA. Nonlinear simulations are carried out with different levels of mom ...

2023

Alfven cascade eigenmodes above the TAE-frequency and localization of Alfven modes in D-He-3 plasmas on JET

Henri Weisen

Various types of Alfven eigenmodes (AEs) have been destabilized by fast ions over a broad frequency range from similar to 80 kHz to similar to 700 kHz in a series of JET experiments in mixed D-He-3 plasmas heated with the three-ion ICRF scenario (2020 Noce ...

IOP Publishing Ltd2022

Experimental Assessment of the Thermal Strain Distribution in Nb3Sn React & Wind Conductor Prototype for European DEMO

Kamil Sedlák, Chiara Frittitta

In a typical Nb3Sn cable for fusion applications, the knowledge of the strain state of Nb3Sn filaments is important to predict and interpret the conductor performance in operation. Amongst the relevant strain sources, the predominant is the thermal strain ...

IEEE Institute of Electrical and Electronics Engineers2022

Triple-Mode Grid-Balancing Plants via Biomass Gasification and Reversible Solid-Oxide Cell Stack: Economic Feasibility Evaluation via Plant Capital-Cost Target

Jan Van Herle, François Maréchal, Maria del Mar Perez Fortes, Ligang Wang

Electricity production and consumption must be balanced for the electrical grid. However, the rapidly growing intermittent power sources are now challenging the supply-demand balance, leading to large flexibility needs for grid management. The plant integr ...

FRONTIERS MEDIA SA2021

Energetics of turbulence generated by chiral MHD dynamos

Salim Bennouna

An asymmetry in the number density of left- and right-handed fermions is known to give rise to a new term in the induction equation that can result in a dynamo instability. At high temperatures, when a chiral asymmetry can survive for long enough, this chi ...

TAYLOR & FRANCIS LTD2019

Electromagnetic Modeling and Control Aspects of a Reaction Sphere for Satellite Attitude Control

Leopoldo Rossini

EPFL2014

Integrated modelling of Ion Cyclotron Resonant Heating in toroidal system

Stephan Brunner, Wilfred Anthony Cooper, Martin Jucker, Jonathan Graves

An integrated model capable of self-consistent Ion Cyclotron Resonant Heating (ICRH) simulations has been developed. This model includes both full shaping and pressure effects, warm contributions to the dielectric tensor, pressure anisotropy and finite orb ...

Elsevier B.V2011

Experimental characterization of drift-interchange instabilities in a simple toroidal plasma

Stephan Brunner, Ambrogio Fasoli, Ivo Furno, Mario Ludovico Podesta, Francesca Maria Poli, Benoît Labit, Gennady Plyushchev

Low frequency electrostatic instabilities are investigated on TORPEX [Fasoli, Labit, McGrath, Muller, Podesta, and Poli, Bull. Am. Phys. Soc. 48, 119 (2003)], a toroidal device for basic plasma physics experiments with a toroidal magnetic field 100 mT and ...

2006