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CMS detector. Part of the CMS (Compact Muon Solenoid) detector at CERN (the European particle physics laboratory) near Geneva, Switzerland, before installation. The detector is waiting to be placed around the large hadron collider (LHC), CERN's highest energy particle accelerator. The main goal of the CMS experiment is the discovery of the Higgs boson, an elementary particle predicted by the Standard Model of particle physics, but yet to be directly detected (as of 2010). (KEYSTONE/SCIENCE PHOTO LIBRARY/MASSIMO BREGA, THE LIGHTHOUSE/SCIENCE PHOTO LIBRARY)