Choosing the dynamic range


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This is the distribution of #electrons seen in the 75μm strips for AuAu events going into the standard (type-2) planes. The Landau tail comes from Geant DELE.

On cvs5:

File fromanc_auau_75_type2.root (10 AuAu events) linked as fromanc.root
root: .x digi_ana_may07.C 

Histo a04->Fit("gaus","R","",8000,20000)

b04 is a04 with different scales. Using Most Probable Value = 12590,

threshold: n×MPV 1× 2× 3× 4× 5× 6×
% below threshold: 51% 88% 94% 95% 96% 97% 

d04->FindBin(xval)              gives bin#
d04->Integral(lowbin,highbin)   gives integral




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