ATLAS is the largest of the four gigantic experiments operating at the CERN Large Hadron Collider (LHC) where protons and lead ions are made to collide at unprecedented high energies and luminosities.
The LHC allows to explore the high energy frontier of particle physics, to go into uncharted territory beyond the current knowledge and try to understand the fundamental building blocks and the forces that shape the Universe.
IBERGRID and EGI provide integration and support to the Portuguese and Spanish high energy physics research laboratories that contribute to the Worldwide LHC Computing Grid delivering computing and storage capacity to process and analyse data from the ATLAS experiment.