) and PC (see Figure 2
) planes show a peak in the center of the detector where the majority of
particle tracks pass. Between upstream and downstream (see Figure 3
) DC planes there is a widening of the cross talk occupancy curve, as the
positrons travel through a larger area of the detector due to their helical
tracks. The same instrumentation restrictions of the planes are placed on
the histograms, as described in Section
.