Margret
reported briefly that for the longitudinal shower shape analysis
she increased her cluster size and also looked at runs where the
additional material was placed closer to the cryostat. The discrepancy
between theory and data for the runs with large amounts of
additional material was slightly reduced when she did that, but is
still there.
Tamara
has applied global cubic time corrections in her pion analysis and
she finds that it has only a minuscule effect on the resolution.
Michel explained that this is likely because the resolution
is generally of the order of about 10%, and the variations observed
due to timing are an order of magnitude smaller. He also pointed out
that doing these corrections is an iterative process, as every time
a correction gets applied, the weighting factor x for the HEC has to
be re-determined.
Next, Tamara will look at the HV corrections.
Tayfun
reported that he characterized all the electron runs and now has all
the run information in a root N-tuple.
Michel
reminded us that we should look at the slides of the LArg week
and read the NIM paper draft.
He also mentioned that Ian Gable wrote a report on the maintenance
of TBRootAna.
Ian
offered to look into the compatibility of TBRootAna with different
versions of ROOT. Margret mentioned that in order to run Minuit
properly, she has to use a different ROOT version that is required
for TBROOTAna. Swapping them won't work for either.
She promised to supply Ian with a log of error message she gets
when running the programs with the different versions and Ian kindly
offered to look into it.