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The high-intensity hyperon beam at CERN

Yu. A. Alexandrov·M. Clement·F. Dropmann·A. Fournier·P. Grafstrom·E. Hubbard·S. Paul·H. W. Siebert·A. Trombini·M. Zavertiaev
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Abstract

A high-intensity hyperon beam was constructed at CERN to deliver Sigma- to experiment WA89 at the Omega facility and operated from 1989 to 1994. The setup allowed rapid changeover between hyperon and conventional hadron beam configurations. The beam provided a Sigma-flux of 1.4 x 10^5 per burst at mean momenta between 330 and 345 Gev/c, produced by about 3 x 10^10 protons of 450 GeV/c . At the experiment target the beam had a Sigma-/pi- ratio close to 0.4 and a size of 1.6 x 3.7 cm^2. The beam particle trajectories and their momenta were measured with a scintillating fibre hodoscope in the beam channel and a silicon microstrip detector at the exit of the channel. A fast transition radiation detector was used to identify the pion component of the beam.

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Yu. A. Alexandrov, M. Clement, F. Dropmann, A. Fournier, P. Grafstrom, E. Hubbard, S. Paul, H. W. Siebert, A. Trombini, M. Zavertiaev. 1998-01-07. The high-intensity hyperon beam at CERN. https://doi.org/10.1016/s0168-9002(98)00228-9

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