Reduction of asymmetric wall force in ITER disruptions with fast current quench

Strauss, H.

doi:10.1063/1.5008813

Title: Reduction of asymmetric wall force in ITER disruptions with fast current quench

Journal Article · 01 February 2018 · Physics of Plasmas

DOI: https://doi.org/10.1063/1.5008813 · OSTI ID:1514858

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HRS Fusion LLC, West Orange, NJ (United States)

One of the problems caused by disruptions in tokamaks is the asymmetric electromechanical force produced in conducting structures surrounding the plasma. The asymmetric wall force in ITER asymmetric vertical displacement event (AVDE) disruptions is calculated in nonlinear 3D MHD simulations. It is found that the wall force can vary by almost an order of magnitude, depending on the ratio of the current quench time to the resistive wall magnetic penetration time. In ITER, this ratio is relatively low, resulting in a low asymmetric wall force. In JET, this ratio is relatively high, resulting in a high asymmetric wall force. Previous extrapolations based on JET measurements have greatly overestimated the ITER wall force. Here, it is shown that there are two limiting regimes of AVDEs, and it is explained why the asymmetric wall force is different in the two limits.

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Research Organization:: HRS Fusion LLC, West Orange, NJ (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Grant/Contract Number:: SC0016169

OSTI ID:: 1514858

Alternate ID(s):: OSTI ID: 1419911; OSTI ID: 1558376

Journal Information:: Physics of Plasmas, Vol. 25, Issue 2; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 12 works

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Cited By (2)

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
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. Nuclear Fusion, Vol. 59, Issue 12 https://doi.org/10.1088/1741-4326/ab440a	journal	October 2019