Changes in the wire occupancy histograms may be due to increased noise (giving
a hot wire), or a missing or malfunctioning wire (dead). Wires with large
amounts of cross talk should also show up as hot wires. As well, changes
in the magnetic field will cause differences in the width of the occupancy
curve. Movement of the occupancy peak may result from changes in the beam
focusing parameters.
Figure 1: Typical Wire Occupancy Histogram
for an Upstream DC Plane.
There is a choppiness to the occupancy curve
caused by the increased noise from muon tracks.
Figure 2: Typical Wire Occupancy
Histogram for a Downstream DC Plane.
Figure 3: Typical Wire Occupancy Histogram
for a Multiplexed PC Plane.
Figure 4: Typical Wire Occupancy Histogram
for a PC Plane With Only the
Centre 46 Wires Instrumented.
