Electromagnetic model for finite element analyses of plasma disruption events used in the design phase of the COMPASS-U tokamak

Hromádka, Jakub; Havlíček, J.; Patel, Nisarg; Yanovskiy, Vadim; Patočka, Karel; Prevratil, Jan; Imríšek, M.; Jaulmes, F.; Brooks, A.; Titus, P.; Balner, V.; Šesták, D.; Pánek, R.

doi:10.1016/j.fusengdes.2021.112369

Cited by 6 publications

(1 citation statement)

References 15 publications

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“…The COMPASS-U is a high-field tokamak presently in the final design phase [1][2][3]. It will operate at strong magnetic field (5 T) and large plasma current (2 MA), therefore, severe electromagnetic forces are expected on the tokamak wall during abnormal plasma terminations.…”

Section: Introductionmentioning

confidence: 99%

Global forces on the COMPASS-U wall during plasma disruptions

Yanovskiy¹,

Isernia²,

Pustovitov³

et al. 2021

Nucl. Fusion

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First, it is shown that during electromagnetic transients in COMPASS-U the poloidal field coils must drain sizeably the current from the vessel and, therefore, reduce disruption forces and their duration. Next, the role of poloidal eddy current (which is absent in some approaches) in the dynamics of vertical and radial forces is found to be essential. Finally, to verify the CarMa0NL modelling for COMPASS-U, the numerical results are cross-validated with general analytical predictions (Pustovitov 2015 Nucl. Fusion 55 113032): the computed vertical force on the tokamak wall is found to be almost zero during rapid (jump-like) transients, as it should be because of strong skin-effect. This test proves the credibility of the simulation model and computational realization.

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Section: Introductionmentioning

confidence: 99%