A Pointing Electromagnetic Calorimeter for FIP Experiments leveraging X → γγ DecaysSebastian Ritter, Volker Büscher, Matei Climescu, Reinhold Degele, Claudia Caterina Delogu, Karl-Heinz Geib, Steffen Schönfelder and Rainer WankeEPJ Web Conf., 320 (2025) 00011DOI: https://doi.org/10.1051/epjconf/202532000011