no. 12, pp. 8401711 (2024) Experimental Results on Longitudinal RF Beam Phase Feedback in the Heavy-Ion Synchrontron SIS18 B. Zipfel, D. Lens, R. Balß, K. Gross, M. Hardieck, H. Klingbeil, U. Laier, S. Schaefer [...] G. Thomin, T. Winnefeld, and B. Zipfel Proceedings of HIAT (2022) TUP03, Darmstadt, Germany Heavy-Ion Synchrotron and Storage Ring LLRF Systems at GSI and FAIR: Status and Machine Development Experiment [...] Campinas, Brazil A facility for the research, development, and translation of advanced technologies for ion-beam therapies M. Lis, W. Newhauser, M. Donetti, M. Durante, U. Weber, B. Zipfel, C. Hartmann-Sauter