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

Nature’s sunscreen and other SwissFEL stories

From DNA repair to catalysts: how the Alvra experimental station at SwissFEL has developed into a special tool for biology and chemistry research. 

What will the SLS 2.0 upgrade mean for experiments?

Tighter beams, brighter light and extended photon energies open new experimental possibilities.

Developing detectors to transform science with light (part 2)

Charge fractionalisation observed spectroscopically

Quantum mechanics tells us that the fundamental unit of charge is unbreakable – but exceptions exist.

Developing detectors to transform science with light (part 1)

Altermagnetism proves its place on the magnetic family tree

Experiments at the Swiss Light Source SLS prove the existence of a new type of magnetism, with broad implications for technology and research.

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.