Final calibration of pre1,2 post
for 2005 run
using MIPS with 00xx00 signature in SMD

    Goal: determine absolute pre/post-shower gains from fit of Landau to 'd'-spectra 
     Formula:
       float fac=TMath::TanH(feta[ieta])/0.0009; // assumed 0.9 MeV per plastic
       float err=sqrt(mpvEr*mpvEr+1); // add 1ADC ch for ped error
       float gain=mpv*fac, sig=err*fac;
  1. INPUT: 'd'-spectra from iteration 2
  2. pres-1 spectra , table with P-gains
  3. pres-2 spectra , table with Q-gains
  4. post-shower spectra , table with R-gains

    Typical MIP response for pres1 or pres2.

    Typical MIP response for a post-shower.

    Script used: fitPrePost.C

    PRE/POST CALIBRATION IS DONE