Comparison of EBW heating and current drive simulaton models in realistic tokamak conditions

0352767 - ÚFP 2011 RIV IE eng C - Conference Paper (international conference)
Urban, Jakub - Decker, J. - Preinhaelter, Josef - Taylor, G. - Vahala, G. - Vahala, L.
Comparison of EBW heating and current drive simulaton models in realistic tokamak conditions.
EPS Europhysics Conference Abstracts Volume 34A – Contributed papers. Dublin: European Physical Society, 2010 - (McKenna, C.), P5.191-P5.191. 34A. ISBN 2-914771-62-2.
[European Physical Society Conference on Plasma Physics/37th/. Dublin (IE), 21.06.2010-25.06.2010]
R&D Projects: GA ČR GA202/08/0419; GA MŠMT 7G09042
Institutional research plan: CEZ:AV0Z20430508
Keywords : Heating * Current drive * Tokamaks * Electron Bernstein waves * Simulation
Subject RIV: BL - Plasma and Gas Discharge Physics
http://ocs.ciemat.es/EPS2010PAP/html/index.html

In this paper, we report on our study of models being used in electron Bernstein wave (EBW) simulations. Relativistic effects in EBW damping are crucial. If speed is of maximum importance, the Decker and Ram weakly-relativistic damping can be used, bearing in mind its limitations. Saveliev and the fully-relativistic calculation are in good agreement. The Saveliev term seems to suffer more from numerical difficulties and also does not provide separate harmonics damping necessary for current drive calculations. Hence, the fully-relativistic calculation, with a proper choice of numerical parameters, seems to be a better choice.
Permanent Link: http://hdl.handle.net/11104/0192198