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Please use this identifier to cite or link to this item: http://arks.princeton.edu/ark:/88435/dsp012r36v143d
 Title: Vertical forces during VDEs in an ITER plasma and the role of halo currents Contributors: Clasuer, CJardin, SFerraro, NU. S. Department of Energy Keywords: Vertical Displacement EventDisruptionTokamakM3DC1ITER Issue Date: Feb-2020 Publisher: Princeton Plasma Physics Laboratory, Princeton University Related Publication: Nuclear Fusion Abstract: Vertical displacement events (VDEs) can occur in elongated tokamaks causing large currents to flow in the vessel and other adjacent metallic structures. To better understand the potential magnitude of the associated forces and the role of the so called halo currents'' on them, we have used the M3D-C1 code to simulate potential VDEs in ITER. We used actual values for the vessel resistivity and pre-quench temperatures and, unlike most of the previous studies, the halo region is naturally formed by triggering the thermal quench with an increase in the plasma thermal conductivity. We used the 2D non-linear version of the code and vary the post-thermal quench thermal conductivity profile as well as the boundary temperature in order to generate a wide range of possible cases that could occur in the experiment. We also show that, for a similar condition, increasing the halo current does not increase the total force on the wall since it is offset by a decrease in the toroidal contribution. URI: http://arks.princeton.edu/ark:/88435/dsp012r36v143d Appears in Collections: Theory and Computation

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