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Gyrokinetic Simulations of the Tokamak Plasma Edge in Circular Limiter Configuration
Author(s) -
Korpilo T.,
Kiviniemi T. P.,
Leerink S.,
Niskala P.,
Rochford R.
Publication year - 2016
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201610046
Subject(s) - limiter , tokamak , plasma , mach number , turbulence , enhanced data rates for gsm evolution , physics , mechanics , boundary layer , computational physics , atomic physics , materials science , nuclear physics , computer science , telecommunications
The full‐ f gyrokinetic code ELMFIRE is used to simulate the impact of turbulent tokamak plasma transport on the edge plasma flow and scrape‐off‐layer width. The simulation is performed in the circular limiter configuration and extends from the magnetic axis to the material surface. The results show that the sheath potential and parallel Mach number are in agreement with theoretical predictions, while the E × B dynamics are strongly affected by the sheath boundary. The radial fall‐off of density and temperature profiles show non‐exponential behaviour in the scrape‐off‐layer. Numerical issues appearing in the ELMFIRE simulation of edge plasma transport are discussed. (© 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)