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-activated 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 possibly to avoid RE beams altogether in ITER, motivating further studies in this direction.
Fast plasma dilution in ITER with pure deuterium shattered pellet injection
Nardon E.; Hu D.; Hoelzl M.; Bonfiglio D.; JOREK Team
ID | 436114 |
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DOI | 10.1088/1741-4326/abb749 |
PRODUCT TYPE | Journal Article |
LAST UPDATE | 2022-04-12T08:22:58Z |
EU PROJECT | EUROfusion |
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TITLE | Implementation of activities described in the Roadmap to Fusion during Horizon 2020 through a Joint programme of the members of the EUROfusion consortium |
FOUNDING PROGRAM | H2020 |