Details

Autor(en) / Beteiligte

• Hölzl, M.
• Günter, S.
• Wenninger, R. P.
• Müller, W.-C.
• Huysmans, G. T. A.
• Lackner, K.
• Krebs, I.

Titel

Reduced-magnetohydrodynamic simulations of toroidally and poloidally localized edge localized modes

Ist Teil von

• Physics of plasmas, 2012-08, Vol.19 (8)

Ort / Verlag

United States

Erscheinungsjahr

2012

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We use the non-linear reduced-magnetohydrodynamic code JOREK to study edge localized modes (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 toroidal and poloidal 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 (accepted)]. This localization can only be described in numerical simulations with high toroidal resolution.