On all three spectrometers, the scintillation detector system is
set up by two thin (3 mm and 10 mm), segmented planes of plastic
scintillator material, with each segment read out individually by two
The main purpose of the scintillation detector system is:
- The determination of the time when a particle hits the detector
system, which is needed for the coincidence with the other
spectrometers and as a time reference for the drift chambers.
- The discrimination of particles due to their specific energy loss
in the scintillator. In the energy range where the spectrometers are
operating, the particles in question are protons and deuterons on
the one side and positrons and positive pions on the other side.
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Last modified: Thursday, 3. February 2005, 19:20