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Description
The Swiss Light Source (SLS) at the Paul Scherrer Institute in Switzerland operated continuously for more than two decades before entering an extensive upgrade phase in September 2023.
The SLS 2.0 upgrade comprises a comprehensive rebuild of the storage ring and magnet lattice, novel insertion-device and bending-magnet sources, and modifications to several beam lines. Following its inauguration in August 2025, the facility is scheduled to resume regular user operation for the first beam lines in mid-2026.
In parallel with the upgrade, all beam line shielding required verification and, where necessary, reinforcement. To support this effort, simulations were performed using the Monte Carlo N-Particle Transport Code (MCNP).
This work outlines the radiation-protection challenges associated with the SLS 2.0 upgrade and presents the Monte Carlo simulations for selected beam lines. It describes the considered source-terms, the shielding strategies developed, and the expected dose rate distributions outside supervised areas.
| In which format do you inted to submit your paper? | LaTeX |
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