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

Here, 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 m...

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Veröffentlicht in:Nuclear fusion 2021-12, Vol.61 (12), p.124003
Hauptverfasser: Tinguely, R.A., Izzo, V.A., Garnier, D.T., Sundström, A., Särkimäki, K., Embréus, O., Fülöp, T., Granetz, R.S., Hoppe, M., Pusztai, I., Sweeney, R.
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Sprache:eng
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Zusammenfassung:Here, 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.
ISSN:0029-5515
1741-4326
1741-4326
DOI:10.1088/1741-4326/ac31d7