Improved edge charge exchange recombination spectroscopy in DIII-D
نویسندگان
چکیده
منابع مشابه
Measurement of deuterium density profiles in the H-mode steep gradient region using charge exchange recombination spectroscopy on DIII-D.
Recent completion of a thirty two channel main-ion (deuterium) charge exchange recombination spectroscopy (CER) diagnostic on the DIII-D tokamak [J. L. Luxon, Nucl. Fusion 42, 614 (2002)] enables detailed comparisons between impurity and main-ion temperature, density, and toroidal rotation. In a H-mode DIII-D discharge, these new measurement capabilities are used to provide the deuterium densit...
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The tokamak is the most advanced concept in toroidal magnetic confinement fusion. The H-mode plasma regime, default scenario of the next step experiment ITER, is characterized by an edge transport barrier, which is not yet fully explained by theory. Experimentally measured edge ion temperature profiles will help to test and develop models for these barriers. Transport theory on a basic level is...
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Spectroscopy System on JET T.M. Biewer1, Y. Andrew2, K. Crombe3, N.C. Hawkes2, D.L. Hillis1, C. Strege4, K.-D. Zastrow2, and JET EFDA contributors† JET-EFDA, Culham Science Center, Abingdon, OX14 3DB, UK 1Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA 2EURATOM/UKAEA Fusion Assoc., Culham Science Center, Abingdon, OX14 3DB, UK 3Department of Applied Physics, Ghent University, Rozier 44 ...
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Charge exchange recombination spectroscopy measurements of the poloidal component of the C(+6) temperature and flow in the Madison Symmetric Torus have been vital in advancing the understanding of the ion dynamics in the reversed field pinch. Recent work has expanded the diagnostic capability to include toroidal measurements. A new toroidal view overcomes a small signal-to-background ratio (5%-...
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A novel charge-exchange recombination spectroscopy (CXRS) diagnostic method is presented, which uses a simple thermal gas puff for its donor neutral source, instead of the typical high-energy neutral beam. This diagnostic, named gas puff CXRS (GP-CXRS), is used to measure ion density, velocity, and temperature in the tokamak edge/pedestal region with excellent signal-background ratios, and has ...
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ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 2016
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.4958915