Speaker
Description
At the GSI SIS18 synchrotron, the Spill Optimization System (SOS) has been established as a key tool to improve spill quality during resonant slow extraction. During the 2025 beam periods, the SOS was routinely used with the Radio Frequency Knock-Out (RF-KO) method for several experimental campaigns, enabling improved spill stability and more efficient beam delivery to users under various operational conditions. The experience gained during these runs has also guided the ongoing integration of the SOS into the FAIR control system environment. This integration enables time-multiplexed operation of the system for multiple experiments running in parallel, leading to more efficient operation. It also aims to streamline the setup and monitoring of slow extracted spills through tighter coupling with accelerator controls and unified human and machine interfaces. This contribution summarizes the operational highlights from the 2025 beamtimes and discusses observed improvements in spill stability and beam usability for the experiments. In addition, the current status and outlook of the full control system integration efforts are presented.
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