Publications de Martin Jucker | EPFL Graph Search

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

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

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

Nature Research2012

Kinetic damping of resistive wall modes in ITER

Jonathan Graves, Martin Jucker, Otto Asunta

American Institute of Physics2012

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

Ambrogio Fasoli, Jonathan Graves, Wilfred Anthony Cooper, Xavier Lapillonne, 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

Sawtooth control in ITER using ion cyclotron resonance heating

Olivier Sauter, Jonathan Graves, Martin Jucker, 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, Jonathan Graves, 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

Integrated modelling of Ion Cyclotron Resonant Heating in toroidal system

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

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, Jonathan Graves, 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