Gains from slopes for isolated towers from MinB AuAu collisions

  • Data Taken with HV set F files:

    1. slope determination described at this entry
    2. fraction of minB run 5041059 (fast DAQ mode), ~235K events,
    3. no towers were masked out while checking isolation
    4. actual pedestals subtracted
    3rd deg polynomial was fitted to averaged over phi slopes for calibrated towers in sectors 5-8. Error of eta bin3 was increased to remove it from the fit. used .C code
    .
    eta bin smooth slope
    HV set iv_F
    ideal gains
    (ch/GeV)
    gain*slope
    1 -0.209 18.9 -3.95
    2 -0.204 20.8 -4.24
    3 -0.198 22.6 -4.48
    4 -0.189 24.6 -4.65
    5 -0.179 26.5 -4.76
    6 -0.169 28.5 -4.81
    7 -0.157 30.5 -4.80
    8 -0.146 32.5 -4.74
    9 -0.135 34.4 -4.63
    10 -0.124 36.4 -4.50
    11 -0.114 38.3 -4.36
    12 -0.105 40.1 -4.23

    Conversion of slopes to gains for a tower 'x' at 'eta'-bin

    gain_x = gain_ideal(eta)*slope_ideal(eta) /slope_x
    
    Energy_x/GeV = (ADC - ped)/gain_x
    
    
    Numerical values of gains to be leaded with the time stamp as of "2004-02-10 09:00:01". Format {tower, gain, again, flag}. The flag Renee attached to each tower is in the last column.

    Script slope2gains.tcl, used to convert slopes to gains.