![]() ![]() Each machine accelerates a beam of particles to a given energy before injecting the beam into the next machine in the chain. ![]() The CERN accelerator complex is a succession of machines with increasingly higher energies.How does the LHC work? The CERN accelerator complex (Image: CERN) ![]() "Collider" because the particles form two beams travelling in opposite directions, which are made to collide at four points around the machine."Hadron" because it accelerates protons or ions, which belong to the group of particles called hadrons."Large" refers to its size, approximately 27km in circumference.Why is it called the “Large Hadron Collider”? It consists of a 27-kilometre ring of superconducting magnets with a number of accelerating structures that boost the energy of the particles along the way. The LHC is a particle accelerator that pushes protons or ions to near the speed of light. The accelerator sits in a tunnel 100 metres underground at CERN, the European Organization for Nuclear Research, on the Franco-Swiss border near Geneva, Switzerland. The Large Hadron Collider (LHC) is the most powerful particle accelerator ever built. Eventually this connection will be welded together so that the beams are contained within the beam pipes. The blue cylinders contain the magnetic yoke and coil of the dipole magnets together with the liquid helium system required to cool the magnet so that it becomes superconducting. Two LHC magnets are seen before they are connected together. ![]()
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