47 Herfurth, Frank DEC 16th International Particle Accelerator Conference JACoW Publishing Taipeh, Taiwan 10.18429/JACOW-IPAC2025-THYN1 English 2487-2490 pages The GSI facilities of CRYRING and HiTRAP are used for decelerating ion beams to low energies. This deceleration phase is preceded by the generation and acceleration of those ions. CRYRING and HiTRAP operate at the junction between accelerator science and atomic physics. The scientfic motivation, the operation principle, the state of the art and future outlooks are presented. 33, ; PUB:(DE-HGF)8, ; Accelerator Physics Contribution to a conference proceedings 2025 2025-06-01 - 2025-06-06 GSI-2025-01226 2025-06-01 - 2025-06-06 2025 https://repository.gsi.de/record/362994 https://doi.org/10.18429/JACOW-IPAC2025-THYN1