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Technician in OPAL detector, CERN

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

Science Photo Library features Science and Medical images including photos and illustrations

Media ID 6291767

© DAVID PARKER/SCIENCE PHOTO LIBRARY

Cern Detector European Centre For Geneva Nuclear Research Particle Physics Laboratory Switzerland


EDITORS COMMENTS
This print captures the skilled hands of technician Martin Sproston as he diligently works on one of the two end caps of the OPAL detector at CERN. Located near Geneva, Switzerland, CERN is renowned as the European center for particle physics research. The OPAL detector is just one of four colossal particle detectors housed within the LEP collider. Inside a circular tunnel that stretches 27 kilometers in circumference and lies 100 meters underground, electrons and positrons are accelerated to an impressive energy level of 50 GeV before colliding. At this collision point, the intricate cylindrical assembly known as OPAL comes into play. Like layers of an onion, various apparatuses fit together seamlessly around this critical juncture. The OPAL end caps showcased in this image feature pre-shower counters resembling spokes on a wheel alongside electro-magnetic and hadron calorimeters. These components play crucial roles in detecting and measuring particles produced during collisions. Martin Sproston hails from Britain's esteemed Rutherford Appleton Laboratory and his expertise shines through as he meticulously tends to these intricate instruments. This remarkable photograph was taken back in April 1989 by Science Photo Library, offering us a glimpse into the fascinating world of particle physics research at CERN's opulent facility without mentioning any commercial use or affiliations with companies.

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