Transcript Analyses of EM data.ppt

First result of offline analyses
of EM data
Xin Chen
Preliminary offline data analyses
Ebf library from onLine group
Ebf file
Gleam from software group
Muon calibration scripts from CAL
group
Reconstructed
Root file
High Level
data analyses
CAL muon calibration
Ebf library
Ebf file
Gleam
Digi root file
Muon calibration scripts
Calibration runs
Calibration constants files
We are now validating the constants
Data Analyses
Ebf library
Ebf file
Gleam
Calibration constants files
Digi root file
Gleam
Data taking runs
Binary root files
Ebf030904225708, TKR only, cosmic muons
Root tree analyses
Strip occupancy
0.63% events with less
than 6 digis
Most of events are 1 track events
Conclusion
• Preliminary results shows TKR works much better than
last time
• Infrastructure required for data taking: (In progress by
the online group)
– Where the ebf files are stored?
– How to get info about each run?
– Can we automate file transfer?
• Objectives for data taking:
– Perform CAL only calibration using NRL offline scripts (Sasha &
Xin)
– Perform CAL calibration using TKR with NRL offline scripts
(Sasha & Xin)
– Study charge sharing in TKR (Jason, see his talk tomorrow 4:15)
FEC occupancy
1. Use Gleam to convert ebf file to digi root file
2. For the tracker, no calibrations are done offline
For the calorimeter, run muon calibration scripts
to produce calibration constants xml files.
3. Gleam reads in the digi root file and calibration
constants, performs reconstruction, produces
several root files.
4. ROOT tree analyses
Ebf030904225708, TKR only, cosmic muons