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User name posik
Log entry time 16:09:52 on March 08, 2009
Entry number 265324
Followups:
keyword=cer analysis for BB runs 2019,2020 and 2024Here are some results for the BB cerenkov from runs 2019,2020,2024. Fig. 1 is the tdc, the red curve is with a mirror cut applied to the tdc. I also made some shower cuts to the tdc's. Fig 2 shows a zoomed in picture of the same tdcs.
Fig. 3 shows the mirror cuts that I used. It is interesting that mirror 13 shows what looks like two dense regions(Fig 4). I first though that maybe the cuts for that mirror were bad, so I applied the same cuts to an older run that I had already looked at (1851) which you can see in Fig 5. And there seems to only be one spot there, so not the cuts. Then I realized that 2024 was a different kinematic run than the other two runs, so maybe that was the reason. So I replotted the using only one set of the runs each time and I still see the double image on mirror 13.
Figure 6 shows the ADC's with mirror cuts and some shower cuts. The red
curve is the adc with a mirror cut corresponding to that pmt, and the
blue curve is the adc of the pmt with a mirror cut from a far away
mirror. Finally, fig 7 shows the adc vs tdc.
A copy of this log entry has been emailed to: brads,meziani,flay,yqiang,xqian
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
