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arXiv · 2110.10598

Modeling the complete prevention of disruption-generated runaway electron beam formation with a passive 3D coil in SPARC

RA Tinguely·VA Izzo·DT Garnier·A Sundström·K Särkimäki·O Embréus·T Fülöp·RS Granetz·M Hoppe·I Pusztai·R Sweeney
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Abstract

The potential formation of multi-mega-ampere beams of relativistic "runaway" electrons (REs) during sudden terminations of tokamak plasmas poses a significant challenge to the tokamak's development as a fusion energy source. Here, we use state-of-the-art modeling of disruption magnetohydrodynamics coupled with a self-consistent evolution of RE generation and transport to show that a non-axisymmetric in-vessel coil will passively prevent RE beam formation during disruptions in the SPARC tokamak, a compact, high-field, high-current device capable of achieving a fusion gain Q > 2 in deuterium-tritium plasmas.

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RA Tinguely, VA Izzo, DT Garnier, A Sundström, K Särkimäki, O Embréus, T Fülöp, RS Granetz, M Hoppe, I Pusztai, R Sweeney. 2021-10-20. Modeling the complete prevention of disruption-generated runaway electron beam formation with a passive 3D coil in SPARC. https://doi.org/10.1088/1741-4326%2Fac31d7

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