Quasilinear Evolution of Multiple Non-thermal Ion Distributions in ICRF Heating

Conference · Thu Jun 01 04:00:00 EDT 2006

DOI:https://doi.org/10.1063/1.2800527· OSTI ID:978755

Jaeger, Erwin Frederick ^[1]

---

1. ORNL

The AORSA global-wave solver is combined with the CQL3D bounce-averaged Fokker-Planck code to simulate the quasilinear evolution of non-thermal distributions in ion cyclotron resonance heating of tokamak plasmas. A novel re-formulation of the quasilinear operator enables calculation of the velocity space diffusion coefficients directly from the global wave fields. To obtain self-consistency between the wave fields and particle distribution function, AORSA and CQL3D have been iteratively coupled using Python. The combined self-consistent model is applied to minority ion heating in the Alcator C-Mod tokamak. Results show the formation of a 70 keV ion tail near the minority ion cyclotron resonance layer in approximate agreement with measurements from charge exchange neutral particle analyzers.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 978755
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
CHARGE EXCHANGE
DIFFUSION
DISTRIBUTION FUNCTIONS
HEATING
ICR HEATING
ION CYCLOTRON-RESONANCE
NEUTRAL PARTICLE ANALYZERS
VELOCITY