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Alternating Gradient Synchrotron information


Alternating Gradient Synchrotron (AGS)
A schematic view of the AGS complex at Brookhaven National Laboratory.
General properties
Accelerator typesynchrotron
Beam typeproton, heavy ion
Target typeInjector for RHIC
Beam properties
Maximum energy33 GeV
Maximum current5×1013 protons per pulse
Physical properties
Circumference2,650 feet (810 m)
LocationUpton, New York
Coordinates40°52′27″N 72°52′49″W / 40.87430103°N 72.880168°W / 40.87430103; -72.880168
InstitutionBrookhaven National Laboratory
Dates of operation1960 - present

The Alternating Gradient Synchrotron (AGS) is a particle accelerator located at the Brookhaven National Laboratory in Long Island, New York, United States.

The Alternating Gradient Synchrotron was built on the innovative concept of the alternating gradient, or strong-focusing principle, developed by Brookhaven physicists. This new concept in accelerator design allowed scientists to accelerate protons to energies that were previously unachievable. The AGS became the world's premiere accelerator when it reached its design energy of 33 billion electron volts (GeV) on July 29, 1960.

Until 1968, the AGS was the highest energy accelerator in the world, slightly higher than its 28 GeV sister machine, the Proton Synchrotron at CERN, the European laboratory for high-energy physics. While 21st century accelerators can reach energies in the trillion electron volt region, the AGS earned researchers three Nobel Prizes and today serves as the injector for Brookhaven's Relativistic Heavy Ion Collider; it remains the world's highest intensity high-energy proton accelerator.

The AGS Booster, constructed in 1991, further augments the capabilities of the AGS, enabling it to accelerate more intense proton beams and heavy ions such as Gold. Brookhaven's linear particle accelerator (LINAC) provides 200 million electron volt (MeV) protons to the AGS Booster, and the Electron Beam Ion Source (EBIS) and Tandem Van de Graaff accelerators provide other ions to the AGS Booster. The AGS Booster then accelerates these particles for injection into the AGS. The AGS Booster also provides particle beams to the NASA Space Radiation Laboratory.

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