The ATLAS experiment at the CERN LHC

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ATLAS and the CERN Large Hadron Collider (LHC) are designed to directly address some of the most compelling questions in science. Decades of experimental and theoretical development have led us to the brink of understanding the transition in the evolution of the universe when particles of massive matter emerged fractions of a second after the big bang. We are confident that new physics, likely in the form of new particles, will be discovered by ATLAS at the LHC, and Canada has made significant investments over the past 15 years as part of the international effort to build this massive project. ATLAS has already started data-taking, and the highest LHC energies are expected in 2009. The operation funds requested will enable Canadians to reap the benefits of our investments in ATLAS and the LHC and to be at the forefront of the investigation of the most basic constituents of matter and their interactions.