Poloidal distribution of recycling sources and core plasma fueling in DIII-D, ASDEX-Upgrade and JET L-mode plasmas

Research output: Contribution to journalArticleScientific

Researchers

  • G. D. Porter
  • T. D. Rognlien
  • S. Wiesen
  • M. Wischmeier
  • M. N A Beurskens
  • X. Bonnin
  • B. D. Bray
  • S. Brezinsek
  • N. H. Brooks
  • D. P. Coster
  • T. Eich
  • M. E. Fenstermacher
  • C. Fuchs
  • R. A. Groebner
  • D. Harting
  • A. Huber
  • S. Jachmich
  • A. Kallenbach
  • C. J. Lasnier
  • A. W. Leonard
  • A. Meigs
  • H. W. Müller
  • M. E. Rensink
  • D. L. Rudakov
  • J. G. Watkins
  • E. Wolfrum
  • DII-D Team
  • ASDEX Upgrade team
  • JET EFDA Contributors

Research units

  • Lawrence Livermore National Laboratory
  • Jülich Research Centre
  • Max-Planck-Institut für Plasmaphysik
  • Universite Paris 13
  • General Atomics
  • Royal Military Academy
  • University of California at San Diego
  • Sandia National Laboratories NM

Abstract

Deuterium fueling profiles across the separatrix have been calculated with the edge fluid codes UEDGE, SOLPS and EDGE2D/EIRENE for lower single null, ohmic and low-confinement plasmas in DIII-D, ASDEX Upgrade and JET. The fueling profiles generally peak near the divertor x-point, and broader profiles are predicted for the open divertor geometry and horizontal targets in DIII-D than for the more closed geometries and vertical targets in AUG and JET. Significant fueling from the low-field side midplane may also occur when assuming strong radial ion transport in the far scrape-off layer. The dependence of the fueling profiles on upstream density is investigated for all three devices, and between the different codes for a single device. The validity of the predictions is assessed for the DIII-D configuration by comparing the measured ion current to the main chamber walls at the low-field side and divertor targets, and deuterium emission profiles across the divertor legs, and the high-field and low-field side midplane regions to those calculated by UEDGE and SOLPS.

Details

Original languageEnglish
Article number124017
Pages (from-to)1-13
Number of pages13
JournalPlasma Physics and Controlled Fusion
Volume53
Issue number12
Publication statusPublished - Dec 2011
MoE publication typeB1 Article in a scientific magazine

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