MARK I particle detector at SLAC

MARK I particle detector at SLAC

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Caption: The Mark I detector at the Stanford Linear Accel- erator Center (SLAC), California. It began work in 1974 at SLAC's SPEAR electron-positron collider & made numerous discoveries, notably the J/psi part- icle (1974) & the tau lepton (1975). Rectangular magnets which guide the counter-rotating beams of electrons & positrons that collide at the heart of the detector are at left. The octagonal structure behind physicist Carl Friedberg is formed by the detector's magnet. Within it are 2 rings of photo- multiplier tubes that view scintillation counters in the detector. Within the tubes are concentric rings of spark chambers, which record particles emerging from collisions within the beam pipe.

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Keywords: at slac, california, center, centre, detector, detectors, mark 1 detector, odyssey, particle physics laboratory, research, slac, stanford linear accelerator, us, usa

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