EPJ Web Conf.
Volume 157, 201722 Topical Conference on Radio-Frequency Power in Plasmas
|Number of page(s)||5|
|Published online||23 October 2017|
Experimental study of high power mm-waves scattering by plasma turbulence in TCV plasmas
1 Swiss Plasma Center, Ecole Polytechnique Fédérale de Lausanne, Switzerland
2 Max Planck Institute for Plasma Physics, Garching, Germany
3 Instituto di Fisica del Plasma, CNR, Milan, Italy
4 National Center for Scientific Research Demokritos, National Technical University of Athens, Greece
Published online: 23 October 2017
Understanding the propagation of high power mm-wave in plasmas is of tremendous importance in the route to fusion considering their extensive use in magnetically confined fusion devices. Mm-beams, launched from the outside of the vessel must propagate through plasma edge-turbulence before reaching their target region. Until recently, the effect of edge-turbulence on the beam propagation was neglected, but it has been estimated for ITER that it could lead to significant differences in the time-averaged and instantaneous beam profiles, leading to a loss of efficiency in their use. In this paper, we present first direct experimental measurements of high power beam after propagation in simple magnetized toroidal plasmas in TCV.
© The authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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