BROOKHAVEN NATIONAL LABORATORY / SCIENCE PHOTO LIBRARY BROOKHAVEN NATIONAL LABORATORY / SCIENCE PHOTO LIBRARY
View along one side of the huge neutrino detector at Brookhaven National Laboratory, Long Island, New York, in 1980. Protons generated in the AGS (Alternating Gradient Synchrotron) accelerator strike a target to produce a beam of neutrinos which travel through 40 metres of solid steel before striking the detector. The steel excludes all particles except neutrinos. The detector is 21 metres long & as tall as a two-storey building. It consists primarily of sandwiched calorimeters & proportional drift chambers, with gamma catchers & a muon spectrometer at the end. It mainly studies neutrino-electron scattering events.
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