Status
 
 

• Module (DcbmLoadVFTracking) in place to work with Dch layer
  
  model (and will eventually work with Svt Fast Hit model)
  
  
  
  
  
• Hits (BgsDchLayerHit) from the Dch simulation used to parameterize
  
  the full 5x5 error matrix -- Final parameterization is at the 
  
  production vertex of the underlying MC particle (or point of closest
  
  approach to the z-axis, if no vertex exists).  Billoir method used for
  
  transporting error matrix from last hit to production vertex.
  
  
  
  
  
• Effects simulated: 
  
  
• • full physics palette from Geant4 navigation
    (decays, conversions, MCS, energy loss, etc.).  Intrinsic resolution
    
    
  • intrinsic resolution for each hit in sensitive detector
    
    
    
    
    
• Output is HepAList<TrkRecoTrk> where smeared track parameters
  
  and error matrix are saved for single point (= production vertex).
  
  
  
  
  
• Also put TrkRecoTrk--GTrack map in the Event (map from reco
  
  track to the Monte Carlo particle).
  
  
  
  
  
• Verified that works with ``Beta Chain" 
  
  -- use BetaReco/LoadRecoBtaCandidates to make standard list of
  
        Beta Candidates.
  
  
  
  

---

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                                              Work in Progress + Future

• Currently working on using Svt Fast Hits in a global track 
  
  parameterization, Svt + Dch.  Svt Fast Hits exist already
  
  (Dch Layer Hits and Svt Fast Hits inherit from base BgsTrkHit class,
  
  written by Bill Lockman and Natalia Kuznetsova)
  
  Need to make modifications in DchBgsModules package to use them
  
  correctly (and test the full chain).
  
  
  
  
  
  
• Will use dE/dx parameterization code from Mario Posocco to include
  
  DchPidInfo list.  Thus, Dch PID will be done in the Dch downstream
  
  module.
  
  
  
  
  
• Will implement Fast Hits from Willy Langeveld's fast Svt
  
  simulation (Bill Lockman working on integration into Bogus).
  
  
  
  
  
• Comparisons with Aslund and bbsim/reco to begin adding other, 
  
  higher order detector response effects.
  
  
  
  
  
• Optimize for speed (can use Geant4 fast parameterization classes for
  
  specific cases).