[SBS_sim] g17 results (preliminary)

[Ole Hansen]

HI folks,

attached are a few plots for today's meeting. These are all for the g17 
production (new angle, no magnetic field). Kalyan's amplitude-ratio cut 
is applied. This is rather preliminary and for comparison only.

g17_treff:    Tracking efficiency vs. background level
g17_misrecon: Misreconstruction probability vs. background level
g17-dx:       x residuals for 0% background (for reference)
g17-dth:      theta residuals for 0% background
g17-2-dx:     x residuals for 50% background
g17-2-dth     theta residuals for 50% background

I have a problem with replaying the 100%-background data. There are 
suddenly no track at all. I am probably doing something dumb.

Also, while I do get some track with the g18 data, the efficiency is 
abysmally low. Again, this is probably a simple mistake somewhere.

See you at the meeting at 11.

Ole
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