PSI conducts internationally recognised cutting-edge research in the natural and engineering sciences. Scientists from all over the world carry out experiments at our large research facilities.
PSI in numbers
2300
Employees at PSI are working on the world of tomorrow.
5
PSI operates five particle accelerator-based large research facilities.
64
In a total of 64 centres, labs and groups, we conduct research into pressing societal issues.
3000
Every year, around 3000 researchers from all over the world carry out experiments at our facilities.
The people at PSI
Lord of the data
Between physics and software: Stefan Ritt and his work at the limits of measurement. A portrait in data, experiments, and “forbidden” decays.
Lord of the data
Stefan Ritt works at the very limits of what can be measured. He has now been awarded the IEEE NPSS Computer Applications in Nuclear and Plasma Sciences Award for creating and leading the MIDAS DAQ system.
Corinna Burri wins the PSI Thesis Medal 2026
Corinna Burri's doctoral thesis, conducted in the QPS group, has been awarded the PSI Thesis Medal 2026
