In magnetic connement fusion devices, during abnormal operations (disruptions) the plasma begins to move rapidly towards the vessel wall in a vertical displacement event (VDE), producing plasma current asymmetries, vessel eddy currents and open eld line halo currents, each of which can exert potentially damaging forces upon the vessel and in-vessel components. This paper presents a methodology to estimate electromagnetic loads, on threedimensional conductive structures surrounding the plasma, which arise from the interaction of halo-currents associated to VDEs with a magnetic eld of the order of some Tesla needed for plasma connement. Lorentz forces, calculated by complementary formulations, are used as constraining loads in a linear static structural analysis carried out on a detailed model of the mechanical structures of a representative machine.

Numerical modelling of electromagnetic loads on fusion device structures

BETTINI, PAOLO;
2014

Abstract

In magnetic connement fusion devices, during abnormal operations (disruptions) the plasma begins to move rapidly towards the vessel wall in a vertical displacement event (VDE), producing plasma current asymmetries, vessel eddy currents and open eld line halo currents, each of which can exert potentially damaging forces upon the vessel and in-vessel components. This paper presents a methodology to estimate electromagnetic loads, on threedimensional conductive structures surrounding the plasma, which arise from the interaction of halo-currents associated to VDEs with a magnetic eld of the order of some Tesla needed for plasma connement. Lorentz forces, calculated by complementary formulations, are used as constraining loads in a linear static structural analysis carried out on a detailed model of the mechanical structures of a representative machine.
2014
Journal of Physics: Conference Series
International Conference on Mathematical Modeling in Physical Sciences (ICM2)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2806720
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