Publications de Martin Jucker | EPFL Graph Search

Self-consistent Simulations of ICRH with the Background Equilibrium in Tokamaks and Stellarators

Wilfred Anthony Cooper, Martin Jucker, Jonathan Graves

The SCENIC code package has been developed to integrate self-consistently an anisotropic pressure magnetohydrodynamic equilibrium state with power absorption from Ion Cyclotron Resonance Heating and with a guiding center particle distribution function for ...

American Nuclear Society2014

Power requirements for electron cyclotron current drive and ion cyclotron resonance heating for sawtooth control in ITER

Timothy Goodman, Olivier Sauter, Stefano Coda, Martin Jucker, Jonathan Graves, Costanza Zucca, Otto Asunta

13 MW of electron cyclotron current drive (ECCD) power deposited inside the q = 1 surface is likely to reduce the sawtooth period in ITER baseline scenario below the level empirically predicted to trigger neoclassical tearing modes (NTMs). However, since t ...

IOP Publishing Ltd2013

Control of magnetohydrodynamic stability by phase space engineering of energetic ions in tokamak plasmas

Stefano Coda, Martin Jucker, Jonathan Graves, Mattia Albergante

Nature Research2012

Kinetic damping of resistive wall modes in ITER

Martin Jucker, Jonathan Graves, Otto Asunta

American Institute of Physics2012

Numerical modelling of electromagnetic turbulent transport of energetic ions in burning plasmas

Wilfred Anthony Cooper, Ambrogio Fasoli, Martin Jucker, Jonathan Graves, Xavier Lapillonne, Mattia Albergante

We investigate the redistribution of the neutral beam driven current in the presence of small scale turbulence in the ITER steady-state scenario. Gyrokinetic simulations show that anomalous transport of beam ions can be larger than collisional estimates. T ...

Institute of Physics2011

Sawtooth control in ITER using ion cyclotron resonance heating

Olivier Sauter, Martin Jucker, Jonathan Graves, Otto Asunta

Numerical modelling of the effects of ion cyclotron resonance heating (ICRH) on the stability of the internal kink mode suggests that ICRH should be considered as an essential sawtooth control tool in ITER. Sawtooth control using ICRH is achieved by direct ...

2011

Ion cyclotron resonance heating with consistent finite orbit widths and anisotropic equilibria

Wilfred Anthony Cooper, Martin Jucker, Jonathan Graves

Minority ion cyclotron resonance heating is studied using the self-consistent numerical model SCENIC. This model includes 3D geometries with full shaping and anisotropic pressure effects, warm contributions to the dielectric tensor and full orbit effects. ...

Institute of Physics2011

Integrated modelling of Ion Cyclotron Resonant Heating in toroidal system

Stephan Brunner, Wilfred Anthony Cooper, Nicolas Mellet, 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

Self-Consistent ICRH Distribution Functions and Equilibria in Magnetically Confined Plasmas

Martin Jucker

The deployment of high power radio frequency waves in the ion cyclotron range (ICRF) constitutes an important operational facility in many plasma devices, including ITER. Any charged particle describes a helical motion around a given magnetic field line, t ...

EPFL2010

Impact of pressure anisotropy on tokamak equilibria and the toroidal magnetic precession

Wilfred Anthony Cooper, Martin Jucker, Jonathan Graves

Using a generalized anisotropic tokamak equilibrium and an exact guiding centre drift formulation, the effect of parallel and perpendicular anisotropy on the toroidal precession drift is investigated. Signiﬁcant differences between parallel and perpendicul ...

2008

The impact of triangularity on plasma confinement: TCV experiments vs non-linear gyrokinetic modelling

Stephan Brunner, Antoine Pochelon, Laurent Villard, Stefano Coda, Martin Jucker, Yann Camenen, Jonathan Graves, Alessandro Marinoni, Xavier Lapillonne

2007

Free boundary three-dimensional anisotropic pressure equilibria

Wilfred Anthony Cooper, Martin Jucker, Jonathan Graves

2007

Single particle orbits in anisotropic fully shaped plasmas

Wilfred Anthony Cooper, Martin Jucker, Jonathan Graves

2007

Exact canonical drift Hamiltonian formalism with pressure anisotropy and finite perturbed fields

Wilfred Anthony Cooper, Martin Jucker, Jonathan Graves

2007

The impact of triangularity on plasma confinement: TCV experiments vs non-linear gyrokinetic modelling

Stephan Brunner, Antoine Pochelon, Laurent Villard, Stefano Coda, Martin Jucker, Yann Camenen, Jonathan Graves, Alessandro Marinoni, Xavier Lapillonne

2007

Generation and Stability of Large Scale Magnetic Structures in Electron Drift Turbulence

Martin Jucker

2007

Self-consistent model of electron drift mode turbulence

Martin Jucker

The nonlinear dynamics of magnetic electron drift mode turbulence are outlined and the generation of large-scale magnetic structures in a non-uniform magnetized plasma by turbulent Reynolds stress is demonstrated. The loop-back of large-scale ﬂows on the m ...

Cambridge University Press2007

On the kinetic stability of magnetic structures in electron drift turbulence

Martin Jucker

The generation of large-scale magnetic fields in magnetic electron drift mode turbulence is investigated. The mechanism of magnetic Reynolds stress is elucidated with the help of kinetic theory, and a sufficient criterion in the form of Nyquist's criterion ...

American Institute of Physics2007

On the modulational stability of magnetic structures in electron drift turbulence

Martin Jucker

The generation of large-scale magnetic ﬁelds in magnetic electron drift mode turbulence is investigated. In particular, the mechanism of modulational instability caused by three-wave interactions is elucidated and the explicit increment is calculated. Also ...

American Institute of Physics (AIP)2007

Single particle orbits in anisotropic fully shaped plasmas

Wilfred Anthony Cooper, Martin Jucker, Jonathan Graves

2007