
UKAEACCFEPR(22)022021
Iongyroradiusscale microinstabilities typically have a frequency comparable to the ion transit frequency. Hence, it is conventionally assumed that passing electrons respond adiabatically in iongyroradiusscale modes, due to the small electrontoion mass ratio and the large electron transit frequency. However, in gyrokinetic simulations of io…

UKAEACCFECP(20)952018

UKAEACCFEPR(20)222018
A linear perturbation theory is used to model the MHD stability of tokamak equilibria under the application of external 3D magnetic perturbations [C.C. Hegna, Physics of Plasmas 21 :072502, 2014]. The symmetry breaking produces the coupling of toroidal n modes. We use ELITE [H.R. Wilson et al., Physics of Plasmas 9 :1277, 2002] to produ…

UKAEACCFECP(19)512019
Hmode tokamak plasmas are typically characterised by quasiperiodic instabilities called edge localised modes (ELMs) driven by unstable peelingballooning modes [1]. For large scale fusion power plants, the predicted particle and heat fluxes are unacceptable, and an active ELM control method is required. One promising method relies on t…
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