Publication
A non-twisting flux tube for local gyrokinetic simulations
Publications associées (34)
Extended MHD simulations of infernal mode dynamics and coupling to tearing modes
Jonathan Graves, Wilfred Anthony Cooper, Federico David Halpern, Daniele Brunetti
A numerical study of pressure driven magnetohydrodynamic (MHD) instabilities in a low-shear tight aspect ratio configuration is presented. When the magnetic shear is sufficiently small over an extended region in the core, enhanced instability occurs due to ...
Iop Publishing Ltd2015Energetic ion dynamics and confinement in 3D saturated MHD configurations
In the following theoretical and numerically oriented work, a number of findings have been assembled. The newly devised VENUS-LEVIS code, designed to accurately solve the motion of energetic particles in the presence of 3D magnetic fields, relies on a non- ...
EPFL2015NBI fast ion confinement in the helical core of MAST hybrid-like plasmas
Jonathan Graves, Wilfred Anthony Cooper, David Pfefferlé, Cyril Misev
Energetic ions are found to be transported strongly from the core of MAST hybrid-like plasmas during long-lived mode (LLM)
magnetohydrodynamic activity. The resulting impact on the neutral beam ion deposition and concurrent current drive is
modelled usin ...
2014The new TORPEX in-vessel toroidal conductor for the generation of a poloidal magnetic field
Ambrogio Fasoli, Ivo Furno, Fabio Avino
TORoidal Plasma EXperiment (TORPEX) is a Simple Magnetized Torus featuring open helical magnetic field lines obtained from the superposition of a small vertical component on the main toroidal field. This work introduces the experimental setup developed to ...
Amer Inst Physics2014Magnetic states in low-pinning high-anisotropy material nanostructures suitable for dynamic imaging
We present magnetic domain states in a material configuration with high (perpendicular) magnetic anisotropy and particularly low magnetic pinning. This material, a B-doped Co/Pt multilayer configuration, exhibits a strong magnetic contrast in x-ray transmi ...
Amer Physical Soc2013Reduced Basis Methods for the Solution of Parametrized PDEs in Repetitive and Complex Networks with Application to CFD
The objective of this work is to develop a numerical framework to perform rapid and reliable simulations for solving parametric problems in domains represented by networks and to extend the classical reduced basis method. Aimed at this scope, we propose tw ...
EPFL2012Edge Localized Mode Control in TCV
The Tokamak concept, based on magnetic confinement of a hydrogen plasma, is one of today's most promising paths to energy production by nuclear fusion. The experimental scenarios leading to the largest fusion rate are based on a high confinement plasma reg ...
EPFL2012First results on the plasma fluctuations of the TORPEX device in the new magnetic field configurations
Ambrogio Fasoli, Ivo Furno, Paolo Ricci, Joaquim Loizu Cisquella, Fabio Avino, Annamaria Mosetto, Alexandre Dominique Bovet
The TORoidal Plasma EXperiment (TORPEX) is a basic plasma physics device where a Simple Magnetized Torus configuration (SMT) can be obtained superimposing a small vertical magnetic field component on the main toroidal field, resulting in open magnetic heli ...
2012Observer-based real-time control for the poloidal beta of the plasma using diamagnetic measurements in tokamak fusion reactors
Stefano Coda, Jean-Marc Moret, Federico Alberto Alfredo Felici, James Paley, Loïc Curchod
The constant technological advances and progresses in tokamak research constantly show up new control challenges. In this context, the control of the poloidal beta has arisen as a relevant issue. In this paper a real-time observer based on the real-time an ...
IEEE2011MHD equilibrium and stability of tokamaks and RFP systems with 3D helical cores
Olivier Sauter, Jonathan Graves, Wilfred Anthony Cooper
Bifurcated magnetohydrodynamic (MHD) equilibrium states are computed for ITER hybrid scenario and RFX-mod SHAx configurations with very flat or reversed core magnetic shear conditions. In the ITER studies, the minimum inverse rotational transform qmin is n ...
IOP Publishing2011