magneto-hydro-dynamic stability of fusion plasmas

Organisatieprofiel

Introductie / missie

The control of large scale magnetic instabilities in fusion plasmas is essential for the successful operation of ITER and future fusion power plants. Large scale numerical simulations on the largest supercomputers are applied to study the physics of these instabilities, their consequences and the methods for control.

Highlighted phrase

Simulations of instabilities in fusion plasmas, developing the predictive capability for their occurrence, consequences and control, are required for the preparation of operation of ITER and design of future machines

Over de organisatie

Fusion plasmas can suffer from global instabilities of the magnetic structure of the plasma. The so-called magnetohydrodynamic (MHD) instabilities, driven unstable by the plasma pressure and current, can cause fast losses of the thermal plasma energy. A typical time scale is of the order of 100ms to 1ms.

In present tokamak experiments the effect of the fast MHD induced energy losses to the first wall are mostly tolerable. However, in ITER and future fusion power plants the resulting heat fluxes are likely to be beyond the melting limits of the plasma facing components.

Large-scale computer simulation can give valuable insight in the underlying physics of MHD instabilities as well as the methods for their control. For this purpose, the MHD simulation code JOREK is under development within the European fusion program (www.jorek.eu). The JOREK code is unique in that it combines a (MHD) fluid description of the main plasma with realistic description of the plasma wall interaction. This includes a particle model for neutrals and impurities, describing the sputtering, ionization, recombination and collisions.

The main applications include so-called Edge Localised Modes (ELMs), radiative instabilities leading to disruptions and MHD instabilities driven unstable by the population of fast particles in the plasma originating from fusion reactions and external heating.

Vingerafdruk Duik in de onderzoeksthema's waar magneto-hydro-dynamic stability of fusion plasmas actief is. Deze onderwerplabels komen voort uit het werk van deze leden van de organisatie. Samen vormen ze een unieke vingerafdruk.

Magnetohydrodynamics Engineering en materiaalwetenschappen
peeling Fysica en Astronomie
Plasmas Engineering en materiaalwetenschappen
simulation Fysica en Astronomie
perturbation Fysica en Astronomie
pellets Fysica en Astronomie
gas injection Fysica en Astronomie
magnetohydrodynamics Fysica en Astronomie

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Onderzoeksoutput 2014 2020

Modeling of TAE mode excitation with an antenna in realistic X-point geometry

Dvornova, A., Huijsmans, G. T. A., Sharapov, S., Artola Such, F. J., Puglia, P., Hölzl, M., Pamela, S., Fasoli, A. & Testa, D., 1 jan 2020, In : Physics of Plasmas. 27, 1, 17 blz., 5126171.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

antennas
damping
geometry
excitation
surface layers

A wall-aligned grid generator for non-linear simulations of MHD instabilities in tokamak plasmas

JET Contributors, MAST Team, JOREK Team, Pamela, S. & Huijsmans, G., 1 okt 2019, In : Computer Physics Communications. 243, blz. 41-50 10 blz.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

Plasma stability
Magnetohydrodynamics
generators
grids
Plasmas
38 Downloads (Pure)

Closed-form solutions for the trajectories of charged particles in an exponentially varying magnetostatic field

van Vugt, D. C., Kamp, L. P. J. & Huijsmans, G. T. A., 1 jan 2019, In : IEEE Transactions on Plasma Science. 47, 1, blz. 296-299 4 blz., 8544029.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

Open Access
Bestand
magnetostatic fields
charged particles
trajectories
particle motion
deflection

Pers/media

Kinetic modelling of ELM-induced tungsten transport in a tokamak plasma

Daan van Vugt & Guido T.A. Huijsmans

20/05/19

1 item van Media-aandacht

Pers / media: Vakinhoudelijk commentaar

Tokamaks of the world, contribute!

Guido T.A. Huijsmans

9/01/17

1 item van Media-aandacht

Pers / media: Vakinhoudelijk commentaar

Scripties/masterproeven

Evaluation of core beta effects on pedestal MHD stability in ITER and consequences for energy confinement

Auteur: Oosterbeek, W., 2018

Begeleider: Huijsmans, G. T. (Afstudeerdocent 1), Weyens, T. (Externe coach), van Dijk, J. (Afstudeerdocent 2) & Loarte, A. (Externe persoon) (Externe coach)

Scriptie/masterproef: Master

Bestand

Full-orbit particle simulations with sawtooth, RMP and ripple for AUG

Auteur: Cats, S. Y., 2017

Begeleider: de Blank, H. J. (Afstudeerdocent 1), Westerhof, E. (Externe persoon) (Externe coach), Huijsmans, G. T. (Afstudeerdocent 2), Felici, F. A. (Afstudeerdocent 2), Kamp, L. P. (Afstudeerdocent 2), van Dijk, J. (Afstudeerdocent 2) & van der Heijden, R. W. (Afstudeerdocent 2)

Scriptie/masterproef: Master

Bestand

Nonlinear JOREK simulations of the Greenwald density limit with a thermo-resistive radiation model

Auteur: van Overveld, T. J., 2019

Begeleider: Huijsmans, G. T. (Afstudeerdocent 1), Kamp, L. P. (Afstudeerdocent 2) & van Vugt, D. C. (Afstudeerdocent 2)

Scriptie/masterproef: Master

Bestand