CERN-PS-201()

STUDY OF ANTINUCLEON ANNIHILATIONS AT LEAR WITH OBELIX, A LARGE-ACCEPTANCE AND HIGH RESOLUTION DETECTOR BASED ON THE OPEN AXIAL FIELD SPECTROMETER
(
  • Proposed: Jan 21, 1986,
  • Approved: Sep 4, 1986,
  • Started: Aug, 1990,
  • Completed: 1996
)
OBELIX Collaboration
Studies (1) spectroscopy of q-qbar, exotic, glueball, and hybrid mesons, (2) dynamics of nucleon-antinucleon interactions, (3) atomic physics with antiprotons, and (4) antiproton annihilations onto more than one nucleon. A Spiral Projection Chamber (SPC) is used as vertex detector. The magnet and the jet drift chamber of the Open Axial Field Spectrometer (AFS) are used for charged particles momentum and dE/dx measurements. Two concentric arrays of plastic scintillators identify and trigger on charged kaons. Gamma showers are reconstructed in three dimensions with gas sampling calorimeter moduli. Taking data (July 96). Scheduled to complete the data taking by the end of 1996.
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