Measurements of Fast Ion Distribution in ICRF Heated Plasmas
- MIT Plasma Science and Fusion Center, Cambridge, MA (United States)
Alcator C-Mod uses ICRF for the bulk auxiliary heating and relies primarily on hydrogen minority heating scenarios. Measuring the resulting hydrogen ion distribution provides an opportunity to validate upgraded ICRF simulation capability that includes non-Maxwellian ions. The Compact Neutral Particle Analyzer (CNPA) is a diagnostic employed on Alcator C-Mod to measure this fast ion distribution function. The diagnostic can measure the energy distribution of the fast ion tail, serving as a benchmark for simulation results and allowing for an assessment of the simulation algorithm and physics kernel. In this poster, we will present results from the detector in the most recent campaigns. We will discuss the calculation of the fast ion distribution from the measured CNPA distribution and the resulting effective temperature from applying a Stix fit to this distribution.
- OSTI ID:
- 21335820
- Journal Information:
- AIP Conference Proceedings, Vol. 1187, Issue 1; Conference: 18. topical conference on radio frequency power in plasmas, Gent (Belgium), 24-26 Jun 2009; Other Information: DOI: 10.1063/1.3273844; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ABSORPTION
ALCATOR DEVICE
ALGORITHMS
AUXILIARY HEATING
BENCHMARKS
COMPUTERIZED SIMULATION
DIAGNOSTIC TECHNIQUES
DISTRIBUTION FUNCTIONS
ELECTROMAGNETIC RADIATION
HYDROGEN
HYDROGEN IONS
ICR HEATING
ION CYCLOTRON-RESONANCE
NEUTRAL PARTICLE ANALYZERS
PLASMA
PLASMA DIAGNOSTICS
PLASMA SIMULATION
WAVEGUIDES