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

Institute for Subatomic Physics
25 April 2017
Publication by ALICE Collaboration, including 19 Utrecht researchers.
Onderzoeker Ingmar Swart, rechts, in het lab
25 April 2017
Physicists at Utrecht University have created a ‘quantum simulator’; a model system to study theoretical prognoses for a whole new class of materials.
prof. Guus Velders
20 April 2017
TIME has named Professor by Special Appointment Guus Velders as one of the 100 most influential people in the world.


6 May 2017 10:00 - 22:00
A brand new physics festival - for physicists and non-physicists - in the centre of Utrecht.
10 May 2017 12:45 - 13:45
PhD Defence of Naghmeh Mohammadi
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