1. Institute of Physics of the ASCR, ELI-Beamlines Project, Na Slovance 2, 182 21 Prague, Czech Republic
2. Faculty of Nuclear Sciences and Physical Engineering CTU, Brehova 7, 115 19 Prague 1, Czech Republic
3. Institute of Plasma Physics ASCR, Za Slovankou 3, 182 00 Prague 8, Czech Republic