Speaker
Description
Commissioning of SLS 2.0, the first light-source storage ring employing a substantial number of permanent magnets to realize a compact multi-bend achromat lattice, began in January 2025. As reported at IPAC'25, the nominal beam current of 400 mA was achieved within the first three months of accelerator-dedicated commissioning. Since then, significant additional progress has been made, such as beamline commissioning during the subsequent three-month period, realignment of the storage ring, and commissioning of the fast orbit feedback system. The Swiss Light Source facility upgraded to fourth-generation has reached a level of availability sufficient to begin user operation, delivering high-brightness photon beams to twelve operational beamlines. Two weeks of friendly user operation in July and one month of external user service in November–December were successfully completed. It is currently in shutdown for the further installation of planned photon sources and is scheduled to resume operation in spring 2026. We present the commissioning results, lessons learned, and experience gained during the initial user operations.
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