Jefferson Lab's CLAS Detector (IMAGE)
Caption
Jefferson Lab's CEBAF Large Acceptance Spectrometer collected the data in an experiment that found that protons and neutrons that have briefly paired up in the nucleus have higher-average momentum, which allows a greater fraction of the protons than neutrons to have high momentum in relatively neutron-rich nuclei. The CLAS detector completely surrounds an experimental target and is roughly spherical, measuring 30 feet across. As particles flying out of the target enter the detector, their paths are bent by a magnet and are measured by successive layers of different types of particle detectors.
Credit
DOE's Jefferson Lab
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