Home PSI logo PSI Welcome to the Paul Scherrer Institute This is a web application to provide some useful information during your stay at PSI. QUICKLINK PSI Facility News is an electronic newsletter with issues targeted at the users of the PSI facilities: the Swiss Light Source - SLS, the Swiss spallation neutron source - SINQ, the Swiss Muon Source - SμS, the Particle Physics facilities and the X-ray free electron laser facility - SwissFEL, with a total of approximately 5000 user visits each year. PSI Facility News will inform you quarterly about recent scientific highlights, upcoming calls for proposals, news and events. Paul Scherrer Institute WEATHER