Chord integrated neutral particle diagnostic data analysis for neutral beam injection and ion cyclotron radio frequency heated plasma in a complex Large Helical Device geometry

Energy and angle-resolved measurements of charge exchange neutral particle fluxes from the plasma provide information about Ti, as well as non-Maxwellian substantially anisotropic ion distribution tails due to neutral beam injection (NBI) and ion cyclotron radio frequency (ICRF) heating. The measure...

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Bibliographic Details
Published in:Review of scientific instruments 2006-10, Vol.77 (10)
Main Authors: Veshchev, E. A., Goncharov, P. R., Ozaki, T., Sudo, S., Lyon, J. F.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANISOTROPY
CHARGE EXCHANGE
DATA ANALYSIS
DISTRIBUTION
FOKKER-PLANCK EQUATION
ICR HEATING
ION CYCLOTRON-RESONANCE
LHD DEVICE
MAGNETIC SURFACES
NEUTRAL PARTICLES
PLASMA
PLASMA BEAM INJECTION
PLASMA CONFINEMENT
PLASMA DIAGNOSTICS
RADIOWAVE RADIATION
RF SYSTEMS
STELLARATORS
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Summary:Energy and angle-resolved measurements of charge exchange neutral particle fluxes from the plasma provide information about Ti, as well as non-Maxwellian substantially anisotropic ion distribution tails due to neutral beam injection (NBI) and ion cyclotron radio frequency (ICRF) heating. The measured chord integral neutral flux calculation scheme for the Large Helical Device magnetic surface geometry is given. Calculation results are shown for measurable atomic energy spectra corresponding to heating-induced fast ion distributions from simplified Fokker-Planck models. The behavior of calculated and experimental suprathermal particle distributions from NBI and ICRF heated plasma is discussed in the context of the experimental data interpretation.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.2229279