SOL parallel momentum loss in ASDEX Upgrade and comparison with SOLPS

SOL parallel momentum loss in ASDEX Upgrade and comparison with SOLPS

Blog Article

An H-mode database of ASDEX Upgrade plasmas with improved diagnostics for a variety of different plasma conditions has been analysed to study the momentum removal in the Scrape-Off Layer (SOL).A strong reduction, up to a factor of 100, of the electron pressure is observed close to the separatrix.Sets of L-mode and H-mode like plasma simulations with the Finishing Touches SOLPS5.0 code package have supported the interpretation of the experimental observations (e.g.

, apparent momentum gain, strong radial position dependence) and helped to clarify the role of ion-neutral interactions.The experimental data are in turn used to check the SOLPS predictions, which differ quantitatively, suggesting that important pieces of physics are still not successfully captured by the code.Keywords: Momentum removal, Scrape-off Blade fuses layer, SOLPS, Divertor detachment.