Publications related to Magnetohydrodynamic generator

Magnetohydrodynamic helical structures in nominally axisymmetric low-shear tokamak plasmas

Olivier Sauter, Jonathan Graves, Wilfred Anthony Cooper, Holger Reimerdes, Antoine Pochelon, Federico David Halpern, Daniele Brunetti

The primary goal of hybrid scenarios in tokamaks is to enable high performance operation with large plasma currents whilst avoiding MHD instabilities. However, if a local minimum in the safety factor is allowed to approach unity, the energy required to ove ...

Iop Publishing Ltd2013

Analysis of global hydromagnetic instabilities driven by strongly sheared toroidal flows in tokamak plasmas

Jonathan Graves

Recent numerical calculations have shown that while strong toroidal rotation can increase the external kink limit of tokamak plasmas, the associated rotation shear can drive a Kelvin-Helmholtz like global instability in the plasma, if the rotation frequenc ...

Iop Publishing Ltd2013

Microphysics of Cosmic Plasmas: Hierarchies of Plasma Instabilities from MHD to Kinetic

Ivo Furno

In this article, we discuss the idea of a hierarchy of instabilities that can rapidly couple the disparate scales of a turbulent plasma system. First, at the largest scale of the system, L, current carrying flux ropes can undergo a kink instability. Second ...

Springer2013

Pedestal structure and stability in H-mode and I-mode: a comparative study on Alcator C-Mod

Christian Gabriel Theiler

New experimental data from the Alcator C-Mod tokamak are used to benchmark predictive modelling of the edge pedestal in various high-confinement regimes, contributing to greater confidence in projection of pedestal height and width in ITER and reactors. EL ...

2013

Overview of the RFX-mod fusion science programme

Ambrogio Fasoli, Wilfred Anthony Cooper, Ivo Furno, Christian Gabriel Theiler, Fabio Avino, Nicola Vianello, Elena Gaio, Alberto Ferro

This paper reports the highlights of the RFX-mod fusion science programme since the last 2010 IAEA Fusion Energy Conference. The RFX-mod fusion science programme focused on two main goals: exploring the fusion potential of the reversed field pinch (RFP) ma ...

Iop Publishing Ltd2013

Global electromagnetic simulations of tokamak scrape-off layer turbulence

Paolo Ricci, Joaquim Loizu Cisquella, Sébastien Jolliet, Federico David Halpern, Annamaria Mosetto

We discuss recent studies addressing the properties of tokamak SOL turbulence using a global, electromagnetic, fluid drift-reduced Braginskii model. Non-linear simulations are carried out using the Global Braginskii Solver (GBS) code [1], which is capable ...

2013

Equilibrium and stability in a heliotron with anisotropic hot particle slowing-down distribution

Jonathan Graves, Wilfred Anthony Cooper

The equilibrium and linear fluid Magnetohydrodynamic (MHD) stability in an inward-shifted large helical device heliotron configuration are investigated with the 3D ANIMEC and TERPSICHORE codes, respectively. A modified slowing-down distribution function is ...

American Institute of Physics2012

Bifurcated Helical Core Equilibrium States in Tokamaks

Olivier Sauter, Basil Duval, Stefano Coda, Jonathan Graves, Wilfred Anthony Cooper, Holger Reimerdes, Benoît Labit, Antoine Pochelon, David Pfefferlé, Federico David Halpern, Daniele Brunetti, Jonathan Rossel, Mattia Albergante

Tokamaks with weak to moderate reversed central shear in which the minimum rotational transform

q_{min}

is in the neighbourhood of unity can trigger bifurcated MagnetoHydrodynamic (MHD) equilibrium states, one of which is similar to a saturated ideal ...

2012

Integrated real-time control of MHD instabilities using multi-beam ECRH/ECCD systems on TCV

Olivier Sauter, Basil Duval, Stefano Coda, Timothy Goodman, Federico Alberto Alfredo Felici, Jonathan Rossel

Simultaneous real-time control of multiple MHD instabilities is experimentally demonstrated in the TCV tokamak. Multiple sources of EC heating and current drive, injected through real-time controlled launchers, are used to stabilize 3/2 and 2/1 neoclassica ...

2012

MHD properties in the core of ITER-like hybrid scenarios

Jonathan Graves, Wilfred Anthony Cooper, Federico David Halpern, Daniele Brunetti

MHD stability is studied in the frame of ITER like hybrid scenarios, characterized by weak reversed shear, with particular attention on ideal internal kink modes and infernal mode stability. Numerical simulations for ITER like equilibria, with hollow q pro ...

Iop Publishing Ltd2012

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Magnetohydrodynamic helical structures in nominally axisymmetric low-shear tokamak plasmas

Analysis of global hydromagnetic instabilities driven by strongly sheared toroidal flows in tokamak plasmas

Microphysics of Cosmic Plasmas: Hierarchies of Plasma Instabilities from MHD to Kinetic

Pedestal structure and stability in H-mode and I-mode: a comparative study on Alcator C-Mod

Overview of the RFX-mod fusion science programme

Global electromagnetic simulations of tokamak scrape-off layer turbulence

Equilibrium and stability in a heliotron with anisotropic hot particle slowing-down distribution

Bifurcated Helical Core Equilibrium States in Tokamaks

Integrated real-time control of MHD instabilities using multi-beam ECRH/ECCD systems on TCV

MHD properties in the core of ITER-like hybrid scenarios

Equilibrium and stability in a heliotron with anisotropic hot particle slowing-down distribution

Magnetohydrodynamic helical structures in nominally axisymmetric low-shear tokamak plasmas

Global electromagnetic simulations of tokamak scrape-off layer turbulence

Pedestal structure and stability in H-mode and I-mode: a comparative study on Alcator C-Mod

Bifurcated Helical Core Equilibrium States in Tokamaks

Analysis of global hydromagnetic instabilities driven by strongly sheared toroidal flows in tokamak plasmas

Overview of the RFX-mod fusion science programme

Microphysics of Cosmic Plasmas: Hierarchies of Plasma Instabilities from MHD to Kinetic

Integrated real-time control of MHD instabilities using multi-beam ECRH/ECCD systems on TCV

MHD properties in the core of ITER-like hybrid scenarios