1. ITER Organization, Route de Vinon-sur-Verdon, CS 90 046, 13067 St Paul Lez Durance Cedex, France
2. York Plasma Institute, Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
3. Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
4. Technische Universität Wien, Atominstitut, Stadionallee 2, 1020 Vienna, Austria
5. Max-Planck-Institut für Plasmaphysik, Boltzmanstraβe 2, D-85748 Garching, Germany
6. NRC “Kurchatov Institute,” Kurchatov Square 1, 123098 Moscow, Russia