SOL parallel momentum loss in ASDEX Upgrade and comparison with SOLPS

I. Paradela Pérez*, A. Scarabosio, M. Groth, M. Wischmeier, F. Reimold, ASDEX S D E X Upgrade Team

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)
217 Downloads (Pure)

Abstract

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 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.

Original languageEnglish
Pages (from-to)181-186
JournalNuclear Materials and Energy
Volume12
DOIs
Publication statusPublished - Aug 2017
MoE publication typeA1 Journal article-refereed

Keywords

  • Divertor detachment
  • Momentum removal
  • Scrape-off layer
  • SOLPS

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