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UID:submissions.pasc-conference.org_PASC24_sess119_msa238@linklings.com
SUMMARY:MHD Limit of Kinetic, Drift-Kinetic and Gyro-Kinetic Models
DESCRIPTION:Minisymposium\n\nBen McMillan (University of Warwick)\n\nStand
 ard derivations of Gyrokinetic theory are not formally compatible with glo
 bal MHD theory, even in the collisional and small-Larmor radius limit. On 
 the other hand, simpler kinetic theories, like drift-kinetics, can be stra
 ightforwardly shown to be consistent with MHD in appropriate limits. By le
 veraging the known relationships between these theories, I explain how to 
 formulate and solve such kinetic models in a way that allows system-scale 
 MHD motion to be consistently treated. This provides some insight into whi
 ch system-scale effects are absent in a conventional global gyro-kinetic a
 pproach, and how they might be calculated in a kinetic-MHD type framework.
  As an illustration, we show how certain equilibrium currents are 'missing
 ' when we attempt to reconstruct them via standard gyrokinetics.\n\nDomain
 : Physics, Computational Methods and Applied Mathematics\n\nSession Chairs
 : Stephan Brunner (EPFL); Eric Sonnendrücker (Max Planck Institute for Pla
 sma Physics, Technical University of Munich); and Laurent Villard (EPFL)
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