Interpretive modeling of simple-as-possible-plasma discharges on DIII-D using the OEDGE code

P. C. Stangeby*, J. D. Elder, J. A. Boedo, B. Bray, N. H. Brooks, M. E. Fenstermacher, M. Groth, R. C. Isler, L. L. Lao, S. Lisgo, G. D. Porter, D. Reiter, D. L. Rudakov, J. G. Watkins, W. P. West, D. G. Whyte

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

57 Citations (Scopus)

Abstract

Recently a number of major, unanticipated effects have been reported in tokamak edge research raising the question of whether we understand the controlling physics of the edge. This report is on the first part - here focused on the outer divertor - of a systematic study of the simplest possible edge plasma - no ELMs, no detachment, etc. - for a set of 10 repeat, highly diagnosed, single-null, divertor discharges in DIII-D. For almost the entire, extensive data set so far evaluated, the matches of experiment and model are so close as to imply that the controlling processes at the outer divertor for these simple plasma conditions have probably been correctly identified and quantitatively characterized in the model. The principal anomaly flagged so far relates to measurements of Te near the target, potentially pointing to a deficiency in our understanding of sheath physics in the tokamak environment.

Original languageEnglish
Pages (from-to)883-887
Number of pages5
JournalJournal of Nuclear Materials
Volume313-316
DOIs
Publication statusPublished - Mar 2003
MoE publication typeA1 Journal article-refereed

Keywords

  • Divertor Thompson
  • DIVIMP
  • Edge spectroscopy
  • EIRENE
  • Modeling
  • OEDGE

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