All plots have been generated using a program which reads the Global Buddy counts directly from the CODA file.
The MPS during which the beam was tripping have been removed using a "tough" method : the MPS for which O2D16 MT Front gets less than 1000*I_beam (microA) have been completely removed and are consequently not taken into account to calculate the rates.As a reminder these Global buddy counts are extracted from SDMCH data in FR electronics.
These Global Buddy counts can be compared to NA "buddy_same" counts remembering that SDMCH data are not sensitive to NPN (Next Pulse Neutralization). Also Global Buddy counts are based on coincidence events.
As an example, if we consider O2D1 and O6D1, we increment by one the Global Buddy count of O2D1 if :
O2D1 is hit while O6D1 is in Dead Time.From the plots showing Global Buddy rates versus the beam current square, we see that the rates have a linear behaviour with the beam current square as expected.
We see a slight discrepancy for I = 35microA and I = 40 microA.
I will use some different runs and will see whether it is systematic or not.
The runs which have been considered so far are :
Beam current (micro A) Run number 40 15769 35 15758 30 15759 25 15761 20 15767 15 15763 10 15766 5 15765
