DAVID PARKER / SCIENCE PHOTO LIBRARY DAVID PARKER / SCIENCE PHOTO LIBRARY
ATLAS detector module under construction. ATLAS is a detector at the Large Hadron Collider (LHC) at CERN, the European particle physics laboratory near Geneva, Switzerland. ATLAS, the size of a 5- storey building, is being built around part of the 27-kilometre-long underground ring of the LHC. The LHC will accelerate proton beams to collide in the space seen. The collision energy will create new particles whose decay products radiate out through the detector layers. Here, a yellow support cradle holds the Barrel Liquid Argon Calorimeter that can detect photon and electron energies. It is thought that ATLAS will detect the Higgs particle when the LHC starts operating in 2007.
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