Institute for Subatomic Physics

At the Institute for Subatomic Physics (SAP) we conduct fundamental experimental research into the building blocks of matter and the various forces acting on them. We are part of the ALICE experiment at the CERN's Large Hadron Collider (LHC) in Geneva (Switzerland) and we closely collaborate with the Nikhef institute in Amsterdam.

Science in the spotlight


News from UU

CERN Particle accelerator
15 January 2019
In the Dutch newspaper Volkskrant, Raimond Snellings appeared in an article about the Guark-Gluon Plasma experiments at the particle accelerators.
5 December 2018
The ice on Greenland is melting faster than at any moment during the last 350 years. This is concluded from a model by Brice Noël (IMAU).
Erik van Sebille
22 November 2018
Oceanographer Erik van Sebille researches things that float in oceans: plastic, but also bacteria, fish and larvae.
Publications Subatamic Physics

Elliptic flow of charged particles in Pb-Pb collisions at 2.76 TeV

In one of the first publications of the ALICE experiment, where our institute played a leading role in the analysis, we showed that the emission of particles in heavy-ion collisions at the LHC has a characteristic anisotropy, called elliptic flow. The observation demonstrates that a thermalised, dense system is created, and the strength of the effect shows, that the matter behaves as a perfect liquid with an extremely small viscosity.

More publications