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User name Templon
Log entry time 02:40:00 on October 5,2000
Entry number 49361
keyword=analysis of dummy target data
Figure 1 shows the missing energy spectrum from the dummy target.
Upper left plot shows Em for cuts on good reactz in both spectrometers,
as well as a cut (almost unnecessary) on good tc. tc spectrum with good
reactz cut is shown in upper right panel, cut applied to upper left on tc
is 160
lower left plot in fig. 1 shows the e.reactz spectrum which clearly shows the
cell walls. lower right shows the Em plot with the same cuts as the upper
right, but also a cut on e.reactz to exclude the cell walls:
0.03
The prescale factors were set similarly for the dummy and prod data, so
in the next plot I show an analysis of the production (4He) data with the
exact same cuts, 200k espace events. conclusion: we have plenty of
dummy target data!
FIGURE 1
FIGURE 2