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.
200
Across some 200 laboratories and research groups in 8 centres, we conduct research into pressing societal issues.
2000
Every year, over 2,000 researchers from all over the world use our facilities for their experiments.
The people at PSI
Porthole into a microverse
Congratulations to Nicolai Taufertshöfer for winning the 1st Prize at the MNE Micrograph & Nanograph Contest 2026
“We are responsible for one another”
From chemistry to the PSI fire brigade and the Samaritan movement: how Hanke Nobbenhuis saves lives and trains others to do the same.
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.
