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Technician in OPAL detector, CERN
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Technician in OPAL detector, CERN
A technician works on one of two end caps of the OPAL detector at CERN, the European centre for particle physics near Geneva. OPAL is one of 4 giant particle detectors at the LEP collider. LEP collides electrons & positrons accelerated to an energy of 50 GeV in a circular tunnel 100m underground & 27km in circumference. OPAL is a cylindrical assembly of many types of apparatus which fit together like an onion around the point where the particles collide. The OPAL end caps consist of pre-shower counters (the " spokes" of the wheel) & electro-magnetic & hadron calorimeters. The technician is Martin Sproston of the Rutherford Appleton Laboratory in Britain. Photo taken April 1989
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Media ID 6291353
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Cern Detector European Centre For Geneva Nuclear Research Odyssey Particle Physics Laboratory Switzerland
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