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;
21 class AliMUONTrackParam : public TObject
24 AliMUONTrackParam(); // Constructor
25 virtual ~AliMUONTrackParam(){} // Destructor
27 AliMUONTrackParam(const AliMUONTrackParam& rhs);// copy constructor (should be added per default !)
28 AliMUONTrackParam& operator=(const AliMUONTrackParam& rhs);// (should be added per default !)
30 void GetParamFrom(const AliESDMuonTrack& esdMuonTrack);
31 void SetParamFor(AliESDMuonTrack& esdMuonTrack);
34 // Get and Set methods for data
35 Double_t GetInverseBendingMomentum(void) const {return fInverseBendingMomentum;}
36 void SetInverseBendingMomentum(Double_t InverseBendingMomentum) {fInverseBendingMomentum = InverseBendingMomentum;}
37 Double_t GetBendingSlope(void) const {return fBendingSlope;}
38 void SetBendingSlope(Double_t BendingSlope) {fBendingSlope = BendingSlope;}
39 Double_t GetNonBendingSlope(void) const {return fNonBendingSlope;}
40 void SetNonBendingSlope(Double_t NonBendingSlope) {fNonBendingSlope = NonBendingSlope;}
41 Double_t GetZ(void) const {return fZ;}
42 void SetZ(Double_t Z) {fZ = Z;}
43 Double_t GetBendingCoor(void) const {return fBendingCoor;}
44 void SetBendingCoor(Double_t BendingCoor) {fBendingCoor = BendingCoor;}
45 Double_t GetNonBendingCoor(void) const {return fNonBendingCoor;}
46 void SetNonBendingCoor(Double_t NonBendingCoor) {fNonBendingCoor = NonBendingCoor;}
47 Double_t Px() const; // return px
48 Double_t Py() const; // return py
49 Double_t Pz() const; // return pz
50 Double_t P() const; // return total momentum
52 void ExtrapToZ(Double_t Z);
53 void ExtrapToStation(Int_t Station, AliMUONTrackParam *TrackParam);
54 void ExtrapToVertex(Double_t xVtx, Double_t yVtx, Double_t zVtx); // extrapolation to vertex through the absorber (with true vertex)
55 void BransonCorrection(Double_t xVtx, Double_t yVtx, Double_t zVtx); // makes Branson correction with true vertex
56 // returns total momentum after energy loss correction in the absorber
57 Double_t TotalMomentumEnergyLoss(Double_t thetaLimit, Double_t pTotal, Double_t theta);
58 void FieldCorrection(Double_t Z); // makes simple magnetic field correction through the absorber
60 void ExtrapOneStepHelix(Double_t charge, Double_t step,
61 Double_t *vect, Double_t *vout) const;
62 void ExtrapOneStepHelix3(Double_t field, Double_t step,
63 Double_t *vect, Double_t *vout) const;
65 void ExtrapOneStepRungekutta(Double_t charge, Double_t step,
66 Double_t* vect, Double_t* vout) const;
69 virtual void Print(Option_t* opt="") const;
73 Double_t fInverseBendingMomentum; ///< Inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion)
74 Double_t fBendingSlope; ///< Bending slope (cm ** -1)
75 Double_t fNonBendingSlope; ///< Non bending slope (cm ** -1)
76 Double_t fZ; ///< Z coordinate (cm)
77 Double_t fBendingCoor; ///< bending coordinate (cm)
78 Double_t fNonBendingCoor; ///< non bending coordinate (cm)
80 void SetGeant3Parameters(Double_t *VGeant3, Double_t ForwardBackward);
81 void GetFromGeant3Parameters(Double_t *VGeant3, Double_t Charge);
83 void GetField(Double_t *Position, Double_t *Field) const;
85 ClassDef(AliMUONTrackParam, 1) // Track parameters in ALICE dimuon spectrometer