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Journal Articles Nuclear Fusion Year : 2020

Fast plasma dilution in ITER with pure Deuterium Shattered Pellet Injection

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Abstract

JOREK 3D non-linear MagnetoHydroDynamic (MHD) simulations of pure Deuterium Shattered Pellet Injection in ITER are presented. Considering a 15 MA L-mode plasma with a thermal energy content of 36 MJ from the non-activation phase of ITER operation, it is shown that such a scheme could allow diluting the plasma by more than a factor 10 without immediately triggering large MHD activity, provided the background impurity density is low enough. This appears as a promising strategy to reduce the risk of hot tail Runaway Electron (RE) generation and to avoid RE beams altogether in ITER, motivating further studies in this direction.
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Dates and versions

cea-02981009 , version 1 (27-10-2020)

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  • HAL Id : cea-02981009 , version 1

Cite

Eric Nardon, D Hu, M Hoelzl, D Bonfiglio. Fast plasma dilution in ITER with pure Deuterium Shattered Pellet Injection. Nuclear Fusion, 2020. ⟨cea-02981009⟩
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