Rf beam separator at Brookhaven

MAY 01, 1966

Physics Today

A new radio‐frequency beam separator at Brookhaven National Laboratory has produced exposures of negative and positive K mesons at a momentum of $12.8 GeV /c,$ the largest momentum obtained to date with separated kaon beams. The separator, a joint project of the Brookhaven Accelerator Department and Yale University, was completed at the end of 1965. A similar instrument is in operation at CERN, producing kaon beams of $10 GeV /c.$ Before completion of the rf separator, Brookhaven used an electrostatic separator that produced kaon beams up to $5.5 GeV /c.$ The new facility will make possible studies of interactions of antiprotons, kaons, and pions at selected momenta between 7 and $18 GeV /c.$

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