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- W4362607478 endingPage "056018" @default.
- W4362607478 startingPage "056018" @default.
- W4362607478 abstract "In the event of a tokamak disruption in a D-T plasma, fusion-born alpha particles take several milliseconds longer to thermalise than the background. As the damping rates drop drastically following the several orders of magnitudes drop of temperature, Toroidal Alfven Eigenmodes (TAEs) can be driven by alpha particles in the collapsing plasma before the onset of the current quench. We employ kinetic simulations of the alpha particle distribution and show that the TAEs can reach sufficiently strong saturation amplitudes to cause significant core runaway electron transport in unmitigated ITER disruptions. As the eigenmodes do not extend to the plasma edge, this effect leads to an increase of the runaway electron plateau current. Mitigation via massive material injection however changes the Alfven frequency and can lead to mode suppression. A combination of the TAE-caused core runaway electron transport with other perturbation sources could lead to a drop of runaway current in unmitigated disruptions." @default.
- W4362607478 created "2023-04-06" @default.
- W4362607478 creator A5010523068 @default.
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- W4362607478 creator A5049954559 @default.
- W4362607478 creator A5069445263 @default.
- W4362607478 creator A5083163393 @default.
- W4362607478 date "2023-04-05" @default.
- W4362607478 modified "2023-09-29" @default.
- W4362607478 title "The impact of fusion-born alpha particles on runaway electron dynamics in ITER disruptions" @default.
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