Institute for Subatomic Physics

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

Photonic crystal chip
24 February 2017
A new way to compensate variations in nanophotonic circuits may lead to energy savings in datacenters and computer equipment.
André Mischke
17 February 2017
Academia Europaea is a European association, whose members collectively aim to promote learning, education and research.
3 February 2017
NWO grants for René van Roij, Laura Filion, and Marjolein Dijkstra


10 - 15
10 July 2017 09:00 - 15 July 2017 14:00
SQM 2017 will be held in the Koningsberger building of Utrecht University
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

Institute for Subatomic Physics