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Description
Following successful machine commissioning, the Swiss Light Source upgrade, SLS 2.0, entered its first beamline commissioning and user operation phases. This contribution reports on the achieved storage-ring performance and operational stability during user operation. Storage-ring optics were tuned near design, achieving beta beating within a few percent and optimized dispersion. Sub-micron orbit stability was achieved through fast-orbit feedback supported by the in-house DBPM 3 system, permanent magnets, stable power supplies, and improved environmental control. The injector chain delivered highly reproducible bunch charge, stable energy and optics matching, and transmission exceeding requirements.
User operation started with a stable baseline filling pattern and regular top-up injection under defined current-stability conditions. Beamline commissioning progressed in parallel with accelerator-performance optimization, and by the end of the first user period 14 beamlines were routinely operating with availability comparable to the final years of SLS.
Operational statistics confirm that SLS 2.0 has rapidly reached a robust operational regime, paving the way for continued performance optimization and full scientific exploitation.
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