Tayfun
reported that he spent some time establishing an analysis draft.
After establishing a set of preliminary cuts and preparing a database, he
already determined a good run list. He, then applied a second set of cuts that
rejected pions and selected events with hits in F1/F2, and generated NTuples
that contain good events only. The remaining final step will be to do a good
event by event clustering; see whether HV corrections will bring an
improvement; apply geometrical corrections in phi, and output physics
quantities.
Tamara
had a deeper look at the asymmetry plots of the HEC2.
She studied a good number of runs of a position scan and
found that the shape of her version of the MPI asymmetry plots
changes wildly depending on how the sharing between
the modules is done. Unless there is something that
hasn't been made clear in the MPI report, this plot
does not appear to be a reliable measure of HV gap problems.
Tamara has now plotted the ratios: E(hec1)/E(beam) and
E(hec2)/E(beam) vs. x, and plotted these ratios for
all the runs of an x-scan. These plots clearly show
that there is a reduced response in HEC2.
Margret
reported that she generated Geant Ntuples for Tamara with
reduced response(0.5, 0.75 and 1) for a list of cells that Tamara
had given to her. Tamara hasn't had time to look at them yet,
but will do so soon.
In her attempt to understand the Geant testbeam package
better, Margret found out where the individual leakage
detectors are located. Her explanatory slides can be found
in this
pdf file .
The meeting came to a swift end at this point with a
call to the group Christmas luncheon in town...