Scientists and Users The direct access for scientists, researchers and the users of our large facilities

Thank You SLS

Our beamline scientists look back on 22 years of brilliant science made possible by the Swiss Light Source SLS.

Unveiling ultra-thin electron liquids in silicon

Soft X-rays enable scientists to visualise non-invasively the electronic properties of ultra-thin dopant layers buried within semiconductor wafers.

Physics against Cancer: How PSI pioneered modern proton therapy

Beamline innovation could enable treatment within a breath

Momentum cooling could enable shorter treatment times for patients undergoing radiotherapy with protons, circumventing the problems of internal organ motions.

How PSI helped realise BEATS, a new beamline in Jordan

The “BEAmline for Tomography at Sesame” was recently inaugurated as the fifth beamline at the SESAME synchrotron facility.

Hairy cells: How cilia’s motor works

Understanding this motion may help to tackle health problems that affect cilia, which range from fertility issues to lung disease and COVID-19.

Welcome to the PSI Science Portal. On this site you find information on PSI's different research activities and on the experimental opportunities at PSI's large scale research infrastructures.

PSI User Office

The PSI User Office is a central PSI installation to serve the users from all the four user laboratories.

Conference Calendar

Conferences related to methods and topics addressed at our user facilities

PSI Publications

Digital repository and bibliography for all research articles and other publications affiliated with the PSI

PSI User Facilities Newsletter

Current News from PSI photon, neutron and muon user facilities


Library for the Research Institutes within the ETH Domain: Eawag, Empa, PSI & WSL.

Research Integrity at PSI

Research Integrity at the research institutes PSI, EMPA, Eawag, WSL

PSI Guest House

The PSI operates a Guest House to offer a local and practical accommodation for its visitors, guests and users on site.