SLAC-SPEAR()
Stanford Electron Asymmetric Rings
()
- Started: 1972,
- Completed: 9999
SPEAR (originally Stanford Positron Electron Asymmetric Rings) was a collider at the SLAC National Accelerator Laboratory. It began running in 1972, colliding electrons and positrons with an energy of 3 GeV. During the 1970s, experiments at the accelerator played a key role in particle physics research, including the discovery of the J/ψ meson (awarded the 1976 Nobel Prize in physics), many charmonium states, and the discovery of the tau (awarded the 1995 Nobel Prize in physics).
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