Tony Bell - Rutherford Appleton Laboratory; University of Oxford
Jan Benacek - Institute of Physics and Astronomy, University of Potsdam
Antoine Bret - Universidad de Castilla-La Mancha
Federico Fiuza - SLAc, Standford; Instituto Superior Técnico, Lisbon
Anna Grassi - LULI- Sorbonne Université
John Kirk - MPIK, Heidelberg
Francesco Miniati - University of Oxford
Luis O. Silva - Instituto Superior Técnico, Lisbon
Brian Reville - MPIK, Heidelberg
