The US and CERN

The US-CERN relationship enables researchers employed by American universities and national laboratories to work on the international high energy physics experiments hosted at CERN.

The relationship also enables European scientists to work on neutrino research hosted in the United States through the CERN neutrino platform.

US scientists are funded by the US Department of Energy and the National Science Foundation.

A group of ATLAS physicists from The Ohio State University discuss a proton collision event display. (Image: CERN)


The US-CERN community

More than 2000 professors and researchers from US universities and laboratories are on the experimental collaborations at CERN.

The experimental collaborations are formed from teams of independent researchers who work together to build and operate the experiment and its infrastructure.

The participating US scientists develop their own research programs and coordinate with their experiment's governing structure to decide how their team will contribute to the experiment's research, operation and upgrade.


MIP timing detector,MTD,HL-LHC,CMS timing detector
Scientists from Fermilab, University of Kansas, INFN Torino and Caltech in the in the Fermilab Test Beam Facility. They are building a new timing detector for the CMS experiment, one of the four big experiments that records collisions from the Large Hadron Collider at CERN.


Meet some US-CERN researchers

Collaborating US Institutions

The US-CERN partnership

The US-CERN partnership is governed by a series of international cooperation agreements jointly developed by US officials and CERN.

These agreements outline the areas of collaboration and the in-kind contributions from the US to the CERN-hosted LHC research program and from CERN to the US-hosted Deep Underground Neutrino Experiment.

The most recent cooperation agreement was signed in 2015 and three amended protocols were added in 2017.



Dr Doon Gibbs, Director of the US Department of Energy's Brookhaven National Laboratory, visits CERN and meets with CERN Director General Fabiola Gianotti. (Image: CERN)


Joint US-CERN projects