Vertical forces during vertical displacement events in an ITER plasma and the role of halo currents

Clauser, C. F.; Jardin, S. C.; Ferraro, N. M.

doi:10.1088/1741-4326/ab440a

Title: Vertical forces during vertical displacement events in an ITER plasma and the role of halo currents

Journal Article · Wed Oct 16 00:00:00 EDT 2019 · Nuclear Fusion

DOI:https://doi.org/10.1088/1741-4326/ab440a· OSTI ID:1573483

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Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

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 prequench 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.

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Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-09CH11466; SciDAC CTTS

OSTI ID:: 1573483

Journal Information:: Nuclear Fusion, Vol. 59, Issue 12; ISSN 0029-5515

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 18 works

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Cited By (1)

Axisymmetric simulations of vertical displacement events in tokamaks: A benchmark of M3D-C ¹ , NIMROD, and JOREK Krebs, I.; Artola, F. J.; Sovinec, C. R. Physics of Plasmas, Vol. 27, Issue 2 https://doi.org/10.1063/1.5127664	journal	February 2020