Monte Carlo Interface

Reported on the ALICE SW Meeting, CERN, 27 March 2002

• Objective:
  
  Make AliMC interface + TGeant3, TGeant4, TFluka usable outside AliRoot
  
  
• Proposed steps
  
  
  1. Cleanup what we have now and result in:
     
     MC, TGeant3, TGeant4, TFluka
     
     with their present functionality;
     where in MC we should have only
     the interface classes + utilities:
     AliMC.h, AliDecayer.h AliMCProcess.h, AliCallf77.h, AliRndm.h
     and in TGeant3 only the T* classes
     
     Naming:
     Files in MC: Ali* -> TMC*
     Files in TGeant3: TGeant3, TG3*
     Files in TGeant4: TGeant4, TG4*
     Files in TFluka: TFluka, TFL*
     
     Infrastructure:
     Decouple makefiles from AliRoot.
     ? Keep in parallel two sets of makefiles
     ? Usage in AliRoot as external package
     
     Implementation:
     /afs/cern.ch/user/i/ivana/public/aliroot_mc
     
     
  2. Complete the AliRoot-independent part
     to enable AliRoot independent applications:
     
     
     • Move the stack which is currently used in AliGeant3/AliGeant4 via AliRun to T* part.
       
       
     • Introduce an interface for a user application (some TMCVirtualRun) with functions:
       ConstructGeometry()
       InitGeometry()
       BeginEvent()
       BeginPrimary()
       PreTrack()
       ... etc. all =0;
       what would decouple current dependence of AliGeant3/AliGeant4 on the AliRun and AliModule.
       
       
     • Build an example application (can be inspired by Geant4 novice examples).
     
     
     
  3. When geometrical modeller is ready to replace the geometry part with it - having done the 2. we would make easier job here.