Recherche

Afficher tous les résultats pour

Accueil

Personne

Martin Jucker

Cette personne a quitté l’EPFL

À propos
Confidentialité
Mentions légales

Graph Chatbot

Publications associées (24)

Page 1 sur 2

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

Integrated modelling of Ion Cyclotron Resonant Heating in toroidal system

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

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

Fluid magnetohydrodynamic stabilit in a heliotron with anisotropic fast particle species

Jonathan Graves, Wilfred Anthony Cooper, Martin Jucker

The local and global fluid magnetohydrodynamic stability properties of anisotropic pressure plasmas are investigated with the Kruskal-Oberman and rigid hot particle Johnson et al energy principles. A Heliotron configuration that models the Large Helical De ...

2007

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

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

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

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

Relativistic Hamiltonian guiding center drift formalism in anisotropic pressure magnetic coordinates

Jonathan Graves, Wilfred Anthony Cooper, Martin Jucker

A Hamiltonian formulation of the relativistic guiding center drifts is extended to anisotropic pressure plasmas. The magnetic coordinates devised by Boozer are adapted to the anisotropic pressure model and retain canonical properties for two-dimensional an ...

2006

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

Ambrogio Fasoli, Jonathan Graves, Wilfred Anthony Cooper, Martin Jucker, 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

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

Jonathan Graves, Wilfred Anthony Cooper, Martin Jucker

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

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

Jonathan Graves, Wilfred Anthony Cooper, Martin Jucker

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

Sawtooth control in ITER using ion cyclotron resonance heating

Olivier Sauter, Jonathan Graves, Martin Jucker

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

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

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

Jonathan Graves, Wilfred Anthony Cooper, Martin Jucker

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

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

Martin Jucker

Graph Chatbot

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

Integrated modelling of Ion Cyclotron Resonant Heating in toroidal system

Fluid magnetohydrodynamic stabilit in a heliotron with anisotropic fast particle species

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

On the kinetic stability of magnetic structures in electron drift turbulence

Relativistic Hamiltonian guiding center drift formalism in anisotropic pressure magnetic coordinates

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

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

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

Sawtooth control in ITER using ion cyclotron resonance heating

On the modulational stability of magnetic structures in electron drift turbulence

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

Self-consistent model of electron drift mode turbulence

Single particle orbits in anisotropic fully shaped plasmas

Single particle orbits in anisotropic fully shaped plasmas

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

Large scale magnetic field structures in nonuniform unmagnetized plasma

Computational fusion plasma physics

Fluid Plasma Stability in Stellarators with Anisotropic Energetic Species

Computational fusion plasma physics