Abstract
A high-intensity hyperon beam was constructed at CERN to deliver Σ- 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 Σ- flux of 1.4 x 105 per burst at mean momenta between 330 and 345 GeV/c produced by about 3 x 1010 protons of 450 GeV/c. At the experiment target the beam had a Σ-/π- ratio close to 0.4 and a size of 1.6 x 3.7cm2. 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.
Original language | English |
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Pages (from-to) | 359-372 |
Number of pages | 14 |
Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
Volume | 408 |
Issue number | 2-3 |
DOIs | |
State | Published - 11 May 1998 |
Keywords
- Σ and Ξ production
- Hyperon beam
- Hyperon production