GLAST Calorimeter Software Weekly Reports
Weeks of 1 March 2004

NRL

Sasha:  No report

Andrey:  Continuation of last week.  Will start working on GCR calibration software after current task.

Mark:  On leave

LLR

Pol:  Refer to presentation given at 5 March CAL s/w meeting

Berrie:  Refer to presentation given at 5 March CAL s/w meeting

Bordeaux

Benoit, Johan:  We have redetermined the EM energy calibration based on the energy deposition from the proton "beam" we had at GSI.  The conversion parameters (MeV/channel) roughly agree with those obtained with cosmic muons by Pol, but the scatter is fairly large (in the 10% range), which should be further investigated. It will only be a matter of days before we get the first results concerning the quenching factors as determined from the EM data, once the non-linearities are corrected for.

Thierry:  Concerning the software activity, Thierry has established that JQMD (in its current version) does not reproduce the energy deposition of heavy ions measured at GSI (Thierry is working on a figure that he will send you). We will discuss this with Tatsumi Koi but we are considering creating a simple phenomenological model to be incorporated in GEANT4 that would reproduce the main features of the reactions as observed in the GSI data.  This model would have the advantage to be available, to be realistic and to fulfill our needs.

GAM

Frederic: some difficulties with gains intercalibration, still not finalized.

Eric  & Agnieszka : continuation of last week (Z identification with EM alone)

SLAC

Xin:  No report