The Paul Scherrer Institute, PSI, is the largest research centre for natural and engineering sciences within Switzerland. We perform world-class research in three main subject areas: Matter and Material; Energy and the Environment; and Human Health.

Top international research in Switzerland. With 2,300 employees and an annual budget of CHF 460 million, PSI is the largest research institute for natural sciences and engineering in Switzerland. It is the central location of Switzerland's large research facilities.

Paul Scherrer Institute PSI Forschungsstrasse 111 5232 Villigen PSI, Switzerland +41 56 310 21 11. Contact form

Das Paul Scherrer Institut PSI ist das grösste Forschungszentrum für Natur- und Ingenieurwissenschaften in der Schweiz. Wir betreiben Spitzenforschung in den Bereichen Materie und Material, Mensch und Gesundheit sowie Energie und Umwelt.

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.

At more than 40 interactive stations, 15,000 visitors are able to experience first-hand the many different areas of research carried out at PSI. How can Switzerland achieve the energy transition and reach its goal of net zero greenhouse gas emissions by 2050 – at the lowest possible cost, while also guaranteeing the security of the energy supply?

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 a nutshell

The PSI Center for Neutron and Muon Sciences uses neutrons and muons to explore and understand matter and materials. It operates the Swiss Spallation Neutron Source SINQ, the Ultra-cold Neutron Source UCN, the Swiss Muon Source SμS …

PSI Center for Scientific Computing, Theory and Data. PSI Center for Scientific Computing, Theory and Data To overview. Laboratory for Simulation and Modelling; Computational and Theoretical Physics; ... 5232 Villigen PSI. Switzerland +41 56 310 21 11. Contact form. Personal Directory. Footer legal.

With respect to nuclear energy, PSI has a unique position in Switzerland. This is due to its heavy infrastructure, namely the Hot Laboratory with so-called hot cells, well equipped and shielded zones for work and research on radioactive material.