1 #ifndef ALIMUONTRACKPARAM_H
2 #define ALIMUONTRACKPARAM_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
7 // Revision of includes 07/05/2004
10 /// \class AliMUONTrackParam
11 /// \brief Track parameters in ALICE dimuon spectrometer
13 ////////////////////////////////////////////////////
14 /// Track parameters in ALICE dimuon spectrometer
15 ////////////////////////////////////////////////////
19 class AliESDMuonTrack;
22 class AliMUONTrackParam : public TObject
25 AliMUONTrackParam(); // Constructor
26 virtual ~AliMUONTrackParam(){} // Destructor
28 AliMUONTrackParam(const AliMUONTrackParam& rhs);// copy constructor (should be added per default !)
29 AliMUONTrackParam& operator=(const AliMUONTrackParam& rhs);// (should be added per default !)
31 void GetParamFrom(const AliESDMuonTrack& esdMuonTrack);
32 void SetParamFor(AliESDMuonTrack& esdMuonTrack);
35 // Get and Set methods for data
36 Double_t GetInverseBendingMomentum(void) const {return fInverseBendingMomentum;}
37 void SetInverseBendingMomentum(Double_t InverseBendingMomentum) {fInverseBendingMomentum = InverseBendingMomentum;}
38 Double_t GetBendingSlope(void) const {return fBendingSlope;}
39 void SetBendingSlope(Double_t BendingSlope) {fBendingSlope = BendingSlope;}
40 Double_t GetNonBendingSlope(void) const {return fNonBendingSlope;}
41 void SetNonBendingSlope(Double_t NonBendingSlope) {fNonBendingSlope = NonBendingSlope;}
42 Double_t GetZ(void) const {return fZ;}
43 void SetZ(Double_t Z) {fZ = Z;}
44 Double_t GetBendingCoor(void) const {return fBendingCoor;}
45 void SetBendingCoor(Double_t BendingCoor) {fBendingCoor = BendingCoor;}
46 Double_t GetNonBendingCoor(void) const {return fNonBendingCoor;}
47 void SetNonBendingCoor(Double_t NonBendingCoor) {fNonBendingCoor = NonBendingCoor;}
48 Double_t Px() const; // return px
49 Double_t Py() const; // return py
50 Double_t Pz() const; // return pz
51 Double_t P() const; // return total momentum
53 void ExtrapToZ(Double_t Z);
54 void ExtrapToStation(Int_t Station, AliMUONTrackParam *TrackParam);
55 void ExtrapToVertex(Double_t xVtx, Double_t yVtx, Double_t zVtx); // extrapolation to vertex through the absorber (with true vertex)
56 void BransonCorrection(Double_t xVtx, Double_t yVtx, Double_t zVtx); // makes Branson correction with true vertex
57 // returns total momentum after energy loss correction in the absorber
58 Double_t TotalMomentumEnergyLoss(Double_t thetaLimit, Double_t pTotal, Double_t theta);
59 void FieldCorrection(Double_t Z); // makes simple magnetic field correction through the absorber
61 void ExtrapOneStepHelix(Double_t charge, Double_t step,
62 Double_t *vect, Double_t *vout) const;
63 void ExtrapOneStepHelix3(Double_t field, Double_t step,
64 Double_t *vect, Double_t *vout) const;
66 void ExtrapOneStepRungekutta(Double_t charge, Double_t step,
67 Double_t* vect, Double_t* vout) const;
69 virtual void Print(Option_t* opt="") const;
71 void SetField(const AliMagF* magField) {fkField = magField;}
76 Double_t fInverseBendingMomentum; ///< Inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion)
77 Double_t fBendingSlope; ///< Bending slope (cm ** -1)
78 Double_t fNonBendingSlope; ///< Non bending slope (cm ** -1)
79 Double_t fZ; ///< Z coordinate (cm)
80 Double_t fBendingCoor; ///< bending coordinate (cm)
81 Double_t fNonBendingCoor; ///< non bending coordinate (cm)
83 const AliMagF* fkField; //!< field map
85 void SetGeant3Parameters(Double_t *VGeant3, Double_t ForwardBackward);
86 void GetFromGeant3Parameters(Double_t *VGeant3, Double_t Charge);
88 void GetField(Double_t *Position, Double_t *Field) const;
90 ClassDef(AliMUONTrackParam, 1) // Track parameters in ALICE dimuon spectrometer