Analysis of Electromagnetic Forces in Tokamak Vacuum Chamber due to Induced Poloidal Current after Thermal Quench
The work is devoted to the analysis of the influence of poloidal current induced in a tokamak vacuum chamber due to change of paramagnetic plasma properties as a result of thermal quench on the magnitude and distribution of electromagnetic forces in a vacuum chamber. The work was performed numerical...
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Veröffentlicht in: | Physics of atomic nuclei 2020-12, Vol.83 (7), p.1058-1069 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The work is devoted to the analysis of the influence of poloidal current induced in a tokamak vacuum chamber due to change of paramagnetic plasma properties as a result of thermal quench on the magnitude and distribution of electromagnetic forces in a vacuum chamber. The work was performed numerically using the plasma-physics code DINA for conditions of major disruption in the plasma of ITER and T-15MD. A comparison is made of the electromagnetic effect obtained from the toroidal and poloidal currents induced in the vacuum chamber as a result of thermal quench with estimates of the electromagnetic forces due to only toroidal currents. It is shown that the integral radial component of the electromagnetic force in the elements of the vacuum chamber when the poloidal current is taken into account can be much lower than in the case of only the toroidal current induced in the chamber. The paper presents a model for calculating the poloidal current induced in a vacuum chamber first used in the DINA code. |
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ISSN: | 1063-7788 1562-692X |
DOI: | 10.1134/S1063778820070054 |