| Bohdan Padlyak |  | University of Zielona Góra | 
| Péter Dombi |  | ELI-ALPS, ELI-HU Non-Profit Ltd., Szeged, H-6728, HungaryWigner Research Centre for Physics, Budapest, H-1121, Hungary
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| Beata Nowicka |  | Jagiellonian University, Kraków, Poland | 
| Przemysław Piekarz |  | Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland | 
| Michael Meyer |  | European XFEL GmbH, Schenefeld, Germany | 
| Cristian Svetina |  | IMDEA Nanoscience Institute, Madrid, Spain | 
| Jakub Jurczyk  |  | Instituto de Nanociencia y Materiales de Aragón, CSIC - Universidad de Zaragoza, Zaragoza, Spain | 
| Alessandro Surrente |  | Wrocław University of Science and Technology, Wrocław, Poland | 
| Katarzyna Majzner  |  | Jagiellonian University, Kraków, Poland | 
| Ioanna Mantouvalou |  | Helmholtz Zentrum Berlin, Berlin, Germany | 
| Christopher Milne |  | European XFEL GmbH, Schenefeld, Germany | 
| Dawid Pinkowicz |  | Jagiellonian University, Kraków, Poland | 
| Claudio Cirelli |  | Paul Scherrer Institut, Villigen, Switzerland | 
| Alicia Forment-Aliaga |  | Institute of Molecular Science (ICMol), University of Valencia, Valencia, Spain | 
| Siham Benhabib |  | Paris- Saclay University, Gif-sur-Yvette, France | 
| Denys Makarov |  | Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany | 
| Mark W. Meisel |  | Department of Physics and MagLab, University of Florida, Gainesville, FL, USA | 
| Jakub Szlachetko |  | National Synchrotron Radiation Centre SOLARIS, Kraków, Poland | 
| Wojciech Tabiś |  | AGH University of Science and Technology, Kraków, Poland |