1. Centre for Plasma Physics, School of Mathematics and Physics, Queen’s University Belfast, Belfast BT7 1NN, United Kingdom
2. Extreme Light Infrastructure (ELI-NP), and Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH), Str. Reatorului No. 30, 077125 Bucharest-Magurele, Romania
3. Central Laser Facility, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom
4. IGFAE, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
5. Institut für Laser-und Plasmaphysik, Heinrich-Heine-Universität, Düsseldorf, Germany
6. Instituto de Fusion Nuclear, Universidad Politécnica de Madrid, Madrid, Spain
7. Department of Physics, SUPA, University of Strathclyde, Glasgow G4 0NG, United Kingdom
8. ELI Beamlines, Za Radnicí 835, Dolní Břežany 252 41, Czech Republic