New macro "MUONTracker" to make track reconstruction from reference tracks.

[u/mrichter/AliRoot.git] / MUON / AliMUONConstants.cxx

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/* $Id$ */

#include <TMath.h>
#include "AliMUONConstants.h"

ClassImp(AliMUONConstants)

Int_t   AliMUONConstants::fgNCh = 14;
Int_t   AliMUONConstants::fgNTrackingCh = 10;
Int_t   AliMUONConstants::fgNTriggerCh = 4;
Int_t   AliMUONConstants::fgNTriggerCircuit = 234;
Int_t   AliMUONConstants::fgNofDetElements[14] =
{ 4, 4, 4, 4, 18, 18, 26, 26, 26, 26, 18, 18, 18, 18 };

Float_t AliMUONConstants::fgDefaultChamberZ[14] = 
  {-533.5, -546.5, -678.5, -693.5, // St12
   -966.9, -997.9, -1274.5, -1305.5, -1408.6, -1439.6, // St345  update sept04 Ch. Finck 
   -1603.5, -1620.5, -1703.5, -1720.5}; // M1 & M2

Float_t  AliMUONConstants::fgDzCh   = 15.5/2.;
Float_t  AliMUONConstants::fgDzSlat = 8.5/2.;


Float_t  AliMUONConstants::fgDmin[7] = {  36.4,  46.2,  66.0,   80.,   80., 100., 100.};    
Float_t  AliMUONConstants::fgDmax[7]  = {183., 245., 395.,  560.,  563., 850., 900.};  
Int_t   AliMUONConstants::fgMaxZoom = 20;

//______________________________________________________________________________
Int_t AliMUONConstants::GetChamberId(Int_t detElemId)
{ 
// Get chamber Id from detection element Id
// ---

  return detElemId/100 - 1;
}  

//______________________________________________________________________________
Int_t AliMUONConstants::GetFirstDetElemId(Int_t chamberId)
{
// Get first detection element Id for chamber specified by chamber Id
// ---

  return (chamberId+1)*100;
} 
 
//_____________________________________________________________________________
Int_t AliMUONConstants::ChamberNumber(Float_t z) 
{
  // return chamber number according z position of hit. Should be taken from geometry ?
 
  Float_t dMaxChamber = DzSlat() + DzCh() + 0.25; // cm st 3 &4 & 5
  if ( z >  (DefaultChamberZ(4)+50.)) dMaxChamber = 7.; // cm stations 1 & 2
  Int_t iChamber;

  for (iChamber = 0; iChamber < 10; iChamber++) {
    
    if (TMath::Abs(z-DefaultChamberZ(iChamber)) < dMaxChamber) {
      return iChamber;
    }
  }
  return -1;
}