CoEPP experimentalists work in large collaborations that are based at major high-energy physics laboratories.
The main collaboration the Centre is involved in is the ATLAS collaboration at CERN, the European Organization for Nuclear Research, based in Geneva, Switzerland.
By far the greatest use of overseas laboratory facilities takes place at the Large Hadron Collider (LHC) located at CERN, where CoEPP works on the ATLAS experiment and has an office on-site.
CoEPP facilities also include the Australian-ATLAS Tier 2 grid site which is based at the University of Melbourne node.
Other collaborations that involve Centre members include the Belle II collaboration at KEK, the High Energy Accelerator Research Organisation, based in Tsukuba, Japan; and the CDF collaboration, the Collider Detector at Fermilab, based in Batavia, USA.