1. Institute of Tokamak Physics, NRC “Kurchatov Institute”, 123182, Moscow, Russia
2. Laboratorio Nacional de Fusión por Confinamiento Magnético Asociación EURATOM-CIEMAT, 28040, Madrid, Spain
3. National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
4. Institute of Advanced Energy, Kyoto University, Kyoto, 611-0011, Japan
5. Institute of Plasma Physics, NSC KIPT, 310108, Kharkov, Ukraine