Working on the LHC tunnel. Engineers analysing the complex circuitry inside the LHC (large hadron collider) at CERN (the European particle physics laboratory) near Geneva,Switzerland. The LHC is a 27-kilometre underground ring of superconducting magnets housed in this pipe-like structure (top),or cryostat. The cryostat is cooled by liquid helium to keep the operating temperature at just above absolute zero. The LHC works by accelerating two counter-rotating beams of protons to an energy of 7 tera electron volts (TeV). It then forces these beams to collide head-on near two main detectors,known as the CMS (Compact Muon Solenoid) and ATLAS (A Toroidal LHC Apparatus),which detect the sub-atomic particles resulting from the collision. The LHC is scheduled to start operating in May 2008 | |
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Credit: | Science Photo Library / Hart-Davis, Adam |
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