Software parallel session summary

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Software parallel session summary

• MICE collaboration meeting
• INFN, Frascati 27/6-05

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MICE Meeting in FrascatiSoftware Simulation Working Group draft agenda MICE Meeting in FrascatiSoftware Simulation Working Group draft agenda MICE Meeting in FrascatiSoftware Simulation Working Group draft agenda
Monday 27, June - 1430 - 1730 - LNF, Room B34 Monday 27, June - 1430 - 1730 - LNF, Room B34 Monday 27, June - 1430 - 1730 - LNF, Room B34
     
1430 - G4 MICE Steps/Stage/Phases Y. Torun
  Optics Progress Report C. Rogers
  TOF and Ckov Update S. Kahn
  EMCal Status R. Sandstrom
  Physics List and GEANT 4 R. Sandstrom
  (somebody for) Status of G4 MICE fro KEK Beam Test M. Ellis
  Detectors for KEK Beam Test A. Klier
  Package Managers Review of Package Status  
- 1730 Action Items and Schedule All
     
back to the mice05 web site  
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Status of TOF and Ckov Sub-packages in G4Mice
Steve Kahn 27 June 2005
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TOF Digitization Response Algorithm
Signal amplitude at PMTs
These responses are converted to digits (adc
counts)
Signal time at PMTs
ttrack is the time of the track through the
scintillator tdecay is an exponentially
distributed scintillator decay time tPMT jitter
is a gaussian distributed PMT resolution
time. These responses are converted to digits
(tdc counts)
transit time
No attempt yet to track scintillator photons
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Cherenkov Systems GeometryShould be up-to-date

• Upstream Ckov
• C6F14 radiator with n1.25
• 4 PMTs
• 2 on top, 2 on bottom.
• Threshold cherenkov
• 0.7 MeV for electrons
• 140 MeV for muons
• 190 MeV for pions
• Downstream Ckov
• Aerogel with n1.03 (Should use 1.04)
• 12 PMTs on 12-sided polygon.
• Typically on electrons visible since pion
  threshold is gt 500 MeV.
• Requires TOF coincidence.

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Photon Generation in the Cherenkov Detectors

• For each track that crosses the radiator with a
  velocity above threshold a number of photons are
  generated proportional to the deposited energy.
• We currently do not use the Cherenkov photon
  facility in Geant4.
• There is some question as to how well it works
  with reflective surfaces.
• Imaginary photons are generated in a cone (at the
  c angle) around the particle direction.
• Since all mirrors are at 45º w.r.t. the beam
  direction, we can position the PMTs on an
  imaginary plane.
• The c photons that intercept the PMT circles are
  seen.
• Note that Ckov1 has an angle of 53. The circles
  should be ellipses. This has not yet been taken
  into account
• Note that Ckov2 has 12 PMTs whereas Ckov 1 has
  only 4 PMTS.

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G4MICE downstream distributionsG4MICE plans
Rikard Sandström Universite de Geneve MICE
collaboration meeting 27/6-05
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CKOV2 x-y distribution
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Planning ahead, spill structure

• Add option to run MICESpill, not only MICEEvent.
• Need decision on trigger!
• How to set RF phases?
• Converge with Malcolm et al.
• Need a dedicated meeting.
• Detector code will need to change.
• Only TPG OK already to my knowledge.

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Planning ahead, run all BG

• When we can do spill, run with
• A
• EMCal, how well can it handle multiple events,
  pile up etc.
• B
• Beam starting at TOF1.
• Diffuser, iron shield etc.
• Pion contamination (decay on)
• Muon decay on
• RF bg from background bank
• Taking p_t, p_z and TOF from real reconstruction.
• Result realistic emittance resolution!
• One year from now?

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Spill structure

• Simulation
• Changes needed 5 days
• EngModel
• Change check RF 5 days
• DetModel
• Minimal changes 0 days?
• DetResp
• Change all detectors 5x10 days
• Recon
• Change/add recon for all detectors 5x50 days
• 300 mousedays!