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HELIOS: A helium line-ratio spectral-monitoring diagnostic used to generate high resolution profiles near the ion cyclotron resonant heating antenna on TEXTOR

  • E. A. Unterberg
  • , O. Schmitz
  • , D. H. Fehling
  • , H. Stoschus
  • , C. C. Klepper
  • , J. M. Muñoz-Burgos
  • , G. Van Wassenhove
  • , D. L. Hillis
  • Oak Ridge National Laboratory
  • FORSCHUNGSZENTRUM JULICH GMBH
  • Oak Ridge Institute for Science and Education

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

15 Citations (Scopus)

Résumé

Radial profiles of electron temperature and density are measured at high spatial (∼1mm) and temporal (≥10μs) resolution using a thermal supersonic helium jet. A highly accurate detection system is applied to well-developed collisional-radiative model codes to produce the profiles. Agreement between this measurement and an edge Thomson scattering measurement is found to be within the error bars (≲20%). The diagnostic is being used to give profiles near the ion cyclotron resonant heating antenna on TEXTOR to better understand RF coupling to the core.

langue originaleAnglais
Numéro d'article10D722
journalReview of Scientific Instruments
Volume83
Numéro de publication10
Les DOIs
étatPublié - oct. 2012

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