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Title: Feasibility of line-ratio spectroscopy on helium and neon as edge diagnostic tool for Wendelstein 7-X

A beam emission spectroscopy system on thermal helium (He) and neon (Ne) has been set up at Wendelstein 7-X to measure edge electron temperature and density profiles utilizing the line-ratio technique or its extension by the analysis of absolutely calibrated line emissions. The setup for a first systematic test of these techniques of quantitative atomic spectroscopy in the limiter startup phase (OP1.1) is reported together with first measured profiles. Lastly, this setup and the first results are an important test for developing the technique for the upcoming high density, low temperature island divertor regime.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ; ORCiD logo [4] ;  [5] ;  [6]
  1. Univ. of Wisconsin-Madison, Madison, WI (United States). Dept. of Engineering Physics
  2. Max Planck for plasmaphysics, Greifswald (Germany)
  3. Max Planck for plasmaphysics, Greifswald (German
  4. Johns Hopkins Univ., Baltimore, MD (United States). Department of Physics and Astronomy
  5. Ecole Royale Militaire-Koninklijke Militaire School, Brussels (Belgium). Lab. for Plasma Physics
  6. Forschungszentrum Julich (Germany). Inst. fur Energie- und Klimaforschung-Plasmaphysik (IEK)
Publication Date:
Grant/Contract Number:
SC0014210; 633053
Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 11; Conference: 21. Topical Conference on High-Temperature Plasma Diagnostics, Madison, WI (United States), 5-9 Jun 2016; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Research Org:
Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Org:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
Contributing Orgs:
W7-X Team
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
OSTI Identifier:
1327967

Barbui, T., Krychowiak, M., König, R., Schmitz, O., Muñoz Burgos, J. M., Schweer, B., and Terra, A.. Feasibility of line-ratio spectroscopy on helium and neon as edge diagnostic tool for Wendelstein 7-X. United States: N. p., Web. doi:10.1063/1.4962989.
Barbui, T., Krychowiak, M., König, R., Schmitz, O., Muñoz Burgos, J. M., Schweer, B., & Terra, A.. Feasibility of line-ratio spectroscopy on helium and neon as edge diagnostic tool for Wendelstein 7-X. United States. doi:10.1063/1.4962989.
Barbui, T., Krychowiak, M., König, R., Schmitz, O., Muñoz Burgos, J. M., Schweer, B., and Terra, A.. 2016. "Feasibility of line-ratio spectroscopy on helium and neon as edge diagnostic tool for Wendelstein 7-X". United States. doi:10.1063/1.4962989. https://www.osti.gov/servlets/purl/1327967.
@article{osti_1327967,
title = {Feasibility of line-ratio spectroscopy on helium and neon as edge diagnostic tool for Wendelstein 7-X},
author = {Barbui, T. and Krychowiak, M. and König, R. and Schmitz, O. and Muñoz Burgos, J. M. and Schweer, B. and Terra, A.},
abstractNote = {A beam emission spectroscopy system on thermal helium (He) and neon (Ne) has been set up at Wendelstein 7-X to measure edge electron temperature and density profiles utilizing the line-ratio technique or its extension by the analysis of absolutely calibrated line emissions. The setup for a first systematic test of these techniques of quantitative atomic spectroscopy in the limiter startup phase (OP1.1) is reported together with first measured profiles. Lastly, this setup and the first results are an important test for developing the technique for the upcoming high density, low temperature island divertor regime.},
doi = {10.1063/1.4962989},
journal = {Review of Scientific Instruments},
number = 11,
volume = 87,
place = {United States},
year = {2016},
month = {9}
}