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Authors: Köhn, Alf
Jacquot, Jonathan
Bongard, Michael W.
Gallian, Sara
Hinson, Edward T.
Volpe, Francesco
Title: Full-wave modeling of the O-X mode conversion in the Pegasus toroidal experiment
Issue Date: 2011 Zeitschriftenartikel Physics of plasmas 18 (2011) 082501. URL
URI: Copyright (2011) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Physics of Plasmas 18 (2011) 082501 and may be found at
Abstract: The ordinary-extraordinary (O-X) mode conversion is modeled with the aid of a 2D full-wave code in the Pegasus toroidal experiment as a function of the launch angles. It is shown how the shape of the plasma density profile in front of the antenna can significantly influence the mode conversion efficiency and, thus, the generation of electron Bernstein waves (EBWs). It is therefore desirable to control the density profile in front of the antenna for successful operation of an EBW heating and current drive system. On the other hand, the conversion efficiency is shown to be resilient to vertical displacements of the plasma as large as ±10 cm.
Appears in Collections:04 Fakultät Energie-, Verfahrens- und Biotechnik

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