59 citations · 322 across the 14 of their papers we have counts for
14 papers
Probing non-linear MHD stability of the EDA H-mode in ASDEX Upgrade
A Cathey, M Hoelzl, L Gil +11
Regimes of operation in tokamaks that are devoid of large ELMs have to be better understood to extrapolate their applicability to reactor-relevant devices. This paper describes non…
Development and application of a hybrid MHD-kinetic model in JOREK
T. J. Bogaarts, M. Hoelzl, G. T. A. Huijsmans +1
Energetic particle (EP) driven instabilities will be of strongly increased relevance in future burning plasmas as the EP pressure will be very large compared to the thermal plasma.…
Collisional-radiative non-equilibrium impurity treatment for JOREK simulations
D. Hu, G. T. A. Huijsmans, E. Nardon +4
A collisional-radiative non-equilibrium impurity treatment for JOREK 3D nonlinear magneto-hydrodynamic (MHD) simulations has been developed. The impurities are represented by super…
Comparing spontaneous and pellet-triggered ELMs via non-linear extended MHD simulations
A. Cathey, M. Hoelzl, S. Futatani +8
Injecting frozen deuterium pellets into an ELMy H-mode plasma is a well established scheme for triggering edge localized modes (ELMs) before they naturally occur. Based on an ASDEX…
Simulations of COMPASS Vertical Displacement Events with a self-consistent model for halo currents including neutrals and sheath boundary conditions
F. J. Artola, A. Loarte, E. Matveeva +11
The understanding of the halo current properties during disruptions is key to design and operate large scale tokamaks in view of the large thermal and electromagnetic loads that th…
Enhanced Preconditioner for JOREK MHD Solver
I Holod, M Hoelzl, P S Verma +3
The JOREK extended magneto-hydrodynamic (MHD) code is a widely used simulation code for studying the non-linear dynamics of large-scale instabilities in divertor tokamak plasmas. D…
Transition from no-ELM response to pellet ELM triggering during pedestal build-up -- insights from extended MHD simulations
S Futatani, A Cathey, M Hoelzl +6
Pellet ELM triggering is a well established scheme for decreasing the time between two successive ELM crashes below its natural value. Reliable ELM pacing has been demonstrated exp…
Non-linear extended MHD simulations of type-I edge localised mode cycles in ASDEX Upgrade and their underlying triggering mechanism
Andres Cathey, M. Hoelzl, K. Lackner +9
A triggering mechanism responsible for the explosive onset of edge localised modes (ELMs) in fusion plasmas is identified by performing, for the first time, non-linear magnetohydro…
Understanding the reduction of the edge safety factor during hot VDEs and fast edge cooling events
F. J. Artola, K. Lackner, G. T. A. Huijsmans +3
In the present work a simple analytical approach is presented in order to clarify the physics behind the edge current density behaviour of a hot plasma entering in contact with a r…
First predictive simulations for deuterium shattered pellet injection in ASDEX Upgrade
M. Hoelzl, D. Hu, E. Nardon +1
First simulations of deuterium shattered pellet injection (SPI) into an ASDEX Upgrade H-Mode plasma with the JOREK MHD code are presented. Resistivity is increased by one order of…
Simulating the nonlinear interaction of relativistic electrons and tokamak plasma instabilities: Implementation and validation of a fluid model
V. Bandaru, M. Hoelzl, F. J. Artola +2
For the simulation of disruptions in tokamak fusion plasmas, a fluid model describing the evolution of relativistic runaway electrons and their interaction with the background plas…
Non-linear modeling of the threshold between ELM mitigation and ELM suppression by Resonant Magnetic Perturbations in ASDEX Upgrade
François Orain, M. Hoelzl, F. Mink +9
The interaction between Edge Localized Modes (ELMs) and Resonant Magnetic Perturbations (RMPs) is modeled with the magnetohydrodynamic code JOREK using experimental parameters from…
Early evolution of electron cyclotron driven current during suppression of tearing modes in a circular tokamak
J. Pratt, G. T. A. Huijsmans, E. Westerhof
When electron cyclotron (EC) driven current is first applied to the inside of a magnetic island, the current spreads throughout the island and after a short period achieves a stead…
Non-linear Simulations of MHD Instabilities in Tokamaks Including Eddy Current Effects and Perspectives for the Extension to Halo Currents
M. Hoelzl, G. T. A. Huijsmans, P. Merkel +9
The dynamics of large scale plasma instabilities can strongly be influenced by the mutual interaction with currents flowing in conducting vessel structures. Especially eddy current…