BaBar homepage   MinI/QC Calibration Files

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These files contain updated MinI calibrations. They will account for the front-calibration already in place. To use them, one must load them into the private database. Unfortunately, at this point (as far as I know), one must completely reimport the database, i.e. an update via gmake database.load will not work.

26 May:

Calibration using Leif, J&F, QC measurements, in order of priority, with QC measurements scaled according the Leif's parameterization, forward and backward crystals parametrized separately. This plot shows what type of calibration is used for each crystal (black=QC, red = J&F, blue= Leif).
  • EmcMinIDigiCalib.3.0.dat: This file will apply the MinI constants relative to the Jordan's front end scaling.
  • EmcMinIUncalibrate.1.0.dat: This file will only "undo" the front-end calibration, for those who wish to look at raw preamp output.
  • 27 May:

    These files are for runs before 2361, before Jordan applied the front end calibration. Runs after 2361 should use the files above.
  • EmcMinINoFrontEnd.1.0.dat
  • 12 August:

    Ir2 boot now runs with all constants set to one, and the front end has been updated with calibrations from bhabhas, mips and QC. These calibrations are in the file
  • frontend.dat
  • Constants Changes
    Date Run Front-end change Front-end change details Back-end change Back-end change details
    Apr 28 99 2031 Yes Best guess gains, digicut 5 MeV Yes All set to 1.0
    May 26 99 2031 No No Yes Mip/QC
    Aug 6 99 7340 Yes New linearity, Digicut 2.5 MeV,new gains from bhabha's or MIP/QC where no bhabha Yes All set to 1.0
    Aug 24 99 8405 Yes New linearity No No
    Sep 7 99 9081 Yes New linearity No No

    Hirohisa Tanaka
    Last modified: Thu Aug 12 16:29:45 PDT 1999