1. Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences, akademika Lavrentieva prospect 11, Novosibirsk, Russia, 630090
2. Novosibirsk State University, Pirogova Street 2, Novosibirsk, Russia, 630090
3. Institute of Applied Physics of the Russian Academy of Sciences, Ul’yanov Street 46, Nizhny Novgorod, Russia, 603950
4. Institut für Hochfrequenztechnik und Elektronik, Karlsruhe Institut für Technologie, Engesserstraße 5/7613, Karlsruhe, Germany, info@ihe.kit.edu