Mark 2 particle detector at SLAC

Mark 2 particle detector at SLAC

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Credit: US DEPT. OF ENERGY/SCIENCE PHOTO LIBRARY

Caption: A physicist examines photomultiplier tubes forming part of the Mark 2 particle detector at the Stanford Linear Accelerator Center (SLAC) in California. The detector is like a swiss roll, consisting of many sub- detectors for tracking & identifying particles; it is wrapped around the beam pipe of the SPEAR collider, in which electrons & positrons are accelerated in opposite directions within the pipe until brought to collide head-on at the heart of the detector; new particles are created in the resulting electron- positron annihilations. The Mark 2 studied the family of charmed particles in the late 1970s & early 1980s. The photo was taken in October 1977.

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Keywords: at slac, center, detector, detectors, mark 2 detector, particle physics laboratory, photomultiplier tube, research, slac

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