Antiproton Accumulator at CERN

Antiproton Accumulator at CERN

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Credit: HEINI SCHNEEBELI/SCIENCE PHOTO LIBRARY

Restrictions: Editorial use only. This image may not be used to state or imply endorsement by CERN of any product, activity or service

Caption: A view of part of the small ring of the Antiproton Accumulator (AA) at CERN, the Europen particle physics laboratory outside Geneva. The AA "stacks" bunches of antiprotons until they have reached a sufficient density and then injects them into the large Super-Proton-Synchrotron (SPS) accelerator where they are accelerated to energies of up to 540 GeV before being caused to collide head-on with bunches of protons travelling in the SPS in the opposite direction. The AA operates on a principle called "stochastic cooling", the invention of which won Simon van der Meer at CERN the Nobel prize for physics in 1984.

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Keywords: antiproton accumulator, cern, antiproton, stochastic cooling, aa, particle physics laboratory, cern, european centre for, nuclear research, accelerator, odyssey

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