HyperCP: A high-rate spectrometer for the study of charged hyperon and kaon decays

Academic Article


  • The HyperCP experiment (Fermilab E871) was designed to search for rare phenomena in the decays of charged strange particles, in particular CP violation in Ξ and Λ hyperon decays with a sensitivity of 10-4. Intense charged secondary beams were produced by 800 GeV/c protons and momentum selected by a magnetic channel. Decay products were detected in a large-acceptance, high-rate magnetic spectrometer using multiwire proportional chambers, trigger hodoscopes, a hadronic calorimeter, and a muon-detection system. Nearly identical acceptances and efficiencies for hyperons and antihyperons decaying within an evacuated volume were achieved by reversing the polarities of the channel and spectrometer magnets. A high-rate data-acquisition system enabled 231 billion events to be recorded in 12 months of data-taking. © 2005 Elsevier B.V. All rights reserved.
  • Authors

    Digital Object Identifier (doi)

    Author List

  • Burnstein RA; Chakravorty A; Chan A; Chen YC; Choong WS; Clark K; Dukes EC; Durandet C; Felix J; Fuzesy R
  • Start Page

  • 516
  • End Page

  • 565
  • Volume

  • 541
  • Issue

  • 3