Reduced-MHD Simulations of Toroidally and Poloidally Localized ELMs
  We use the non-linear reduced-MHD code JOREK to study ELMs in the geometry of the ASDEX Upgrade tokamak. Toroidal mode numbers, poloidal filament sizes, and radial propagation speeds of filaments into the scrape-off layer are in good agreement with observations for type-I ELMs in ASDEX Upgrade. The observed instabilities exhibit a localization of perturbations which is compatible with the "solitary magnetic perturbations" recently discovered in ASDEX Upgrade [R.Wenninger et.al., Solitary Magnetic Perturbations at the ELM Onset, Nucl.Fusion, submitted]. This localization can only be described in numerical simulations with high toroidal resolution. 
Matthias Hoelzl, Sibylle Guenter, Ronald P. Wenninger, Wolf-Christian   Mueller, Guido T. A. Huysmans, Karl Lackner, Isabel ...
physics.plasm-ph physics.comp-ph physics.flu-dyn