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This page is gathering any piece of information needed for the Beamtest Status presentation due to the Collaboration Meeting in November 2007 in Washington

Meeting Main Page-    Meeting Agenda    -    All Meetings Report    -   BT F2F in Washington

Template

  • Clearly state what we understand and what we do not understand.
  • How we're going to propagate Beamtest systematics to astrophysical measurements :o)

(Random) List of all analysis topics

  • Photons
  • Electrons
  • Hadrons
  • Hits and Clusters
    • for All kind of particles
    • There used to be a difference of behaviour between PS and SPS : we know now it was due to using CO2 in the Cerenkov
  • Energy
    • Absolute value
    • Resolution
    • Number of logs hit
    • Longitudinal and Transverse shower profiles
  • Tagger
    • PSF measurement with smaller error bars ?
    • Is MC understood ?
  • G4 settings
    • Range cuts
    • Physics list
    • Geometry and other tricks
  • ACD
    • Min/Max collection efficiency in MC
    • backsplash measurement
  • Verify Timing in GSI data (Martin)
  • Quenching measurement at GSI (Thierry)
  • Cluster Size for Ions at GSI and other particles (Leon)
  • GEANT4 vs EGS5 vs Mars15 comparisons (David)
  • CAL cristal segmentation (Philippe)
  • TKR Hit deficit evaluation after data reprocessing (Nicola)
  • Bari digitization algorithm
  • TKR Alignment : bug fixed, are we fine ? (Leon)
  • Calorimeter alignment with the CU/Tracker (Michael)
  • CAL XTalk measurement and correction (Sasha)
  •  Tkr hot/dead/masked trips
  • Many pion studies (Berrie)
  • Positron annihilation in MMS
  • Gamma-background produced in MMS by protons (Alex)
  • CAL pedestal drift
  • High rates in the tracker
  • CsI Scintillation afterglow (Benoit)
  • Tkr FIFO analysis (Johan)
  • CAL FHE/FLE study Autorange (ULD) (Tomi)
  • Albedo runs
  • Background study runs
  • Beam spot : Tuning, Gaps and Fiducial cuts
  • EM Shower development
  • Very high level reconstruction variables : Tkr1CoreHC, CalTransRms...
  • Cerenkov pressure scan and scaled energy (Philippe)

Other topics/ideas

  • Selection of beam test-like events from orbits data
  • Agreement Matrix and BtSysTest
  • Material Audit : TKR and CAL, possible improvements

Some comments (luca)

Talk should have a list of

  • understood (i.e. reproduced)
    • angular resolution (tagged+FB+electrons)
    • energy resolution (spread and tails, not average value)
    • backsplash: are we happy with current strong cuts to reproduce that in MC?
    • trigger efficiency (do we have CAL-LE and CAL-HE plots similar to what nicola made for TKR? CNO efficiency? important for effective area)
    • general g4 behaviour and implementation (comparison with other simulators, beam line simulation)
    • CAL calibration (xtalk, non-linearities) - BUT how is SPS cross-calibration compatible with the GSI calibration and how do we calibrate in flight?
    • Material audit (TKR+CAL): how much more X0 do we expect from modifications to CAL geometry?
    • effects of material along beam line, i.e. no coherent improvement on both TKR and CAL discrepancies
    • effects of LE physics list and range cuts
    • optimized (but not perfect) hadronic physics list
  • NOT understood
    • hit deficit in MC (and clusters)
    • log deficit in MC and overall raw energy scale
  • plans to assess
    • effects of discrepancies on background rejection (data-like simulations, we MUST devise and show a plan here, we have been talking about this for too long now)
    • how do we play with shower shape in g4?
  • No labels