New class AliMUONTrackExtrap containing static method for tack extrapolation (Philipp...
[u/mrichter/AliRoot.git] / MUON / AliMUONTrackParam.h
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a9e2aefa 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 */
5
6/*$Id$*/
30178c30 7// Revision of includes 07/05/2004
a9e2aefa 8
692de412 9/// \ingroup rec
10/// \class AliMUONTrackParam
11/// \brief Track parameters in ALICE dimuon spectrometer
12///
13////////////////////////////////////////////////////
14/// Track parameters in ALICE dimuon spectrometer
15////////////////////////////////////////////////////
a9e2aefa 16
3831f268 17#include <TObject.h>
de2cd600 18#include "AliMUONHitForRec.h"
a9e2aefa 19
211c52eb 20class AliESDMuonTrack;
1a38e749 21class AliMagF;
211c52eb 22
30178c30 23class AliMUONTrackParam : public TObject
24{
a9e2aefa 25 public:
30178c30 26 AliMUONTrackParam(); // Constructor
de2cd600 27 virtual ~AliMUONTrackParam(); // Destructor
61adb9bd 28
de2cd600 29 AliMUONTrackParam(const AliMUONTrackParam& theMUONTrackParam);
30 AliMUONTrackParam& operator=(const AliMUONTrackParam& theMUONTrackParam);
211c52eb 31
32 void GetParamFrom(const AliESDMuonTrack& esdMuonTrack);
33 void SetParamFor(AliESDMuonTrack& esdMuonTrack);
34
35
a9e2aefa 36 // Get and Set methods for data
2457f726 37 /// return inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion)
3831f268 38 Double_t GetInverseBendingMomentum(void) const {return fInverseBendingMomentum;}
2457f726 39 /// set inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion)
6464217e 40 void SetInverseBendingMomentum(Double_t InverseBendingMomentum) {fInverseBendingMomentum = InverseBendingMomentum;}
2457f726 41 /// return bending slope (cm ** -1)
3831f268 42 Double_t GetBendingSlope(void) const {return fBendingSlope;}
2457f726 43 /// set bending slope (cm ** -1)
6464217e 44 void SetBendingSlope(Double_t BendingSlope) {fBendingSlope = BendingSlope;}
2457f726 45 /// return non bending slope (cm ** -1)
3831f268 46 Double_t GetNonBendingSlope(void) const {return fNonBendingSlope;}
2457f726 47 /// set non bending slope (cm ** -1)
6464217e 48 void SetNonBendingSlope(Double_t NonBendingSlope) {fNonBendingSlope = NonBendingSlope;}
2457f726 49 /// return Z coordinate (cm)
3831f268 50 Double_t GetZ(void) const {return fZ;}
2457f726 51 /// set Z coordinate (cm)
6464217e 52 void SetZ(Double_t Z) {fZ = Z;}
2457f726 53 /// return bending coordinate (cm)
3831f268 54 Double_t GetBendingCoor(void) const {return fBendingCoor;}
2457f726 55 /// set bending coordinate (cm)
6464217e 56 void SetBendingCoor(Double_t BendingCoor) {fBendingCoor = BendingCoor;}
2457f726 57 /// return non bending coordinate (cm)
3831f268 58 Double_t GetNonBendingCoor(void) const {return fNonBendingCoor;}
2457f726 59 /// set non bending coordinate (cm)
6464217e 60 void SetNonBendingCoor(Double_t NonBendingCoor) {fNonBendingCoor = NonBendingCoor;}
de2cd600 61 void SetTrackParam(AliMUONTrackParam& TrackParam);
62 AliMUONHitForRec* GetHitForRecPtr(void) const;
2457f726 63 /// set pointeur to associated HitForRec if any
de2cd600 64 void SetHitForRecPtr(AliMUONHitForRec* HitForRec) {fHitForRecPtr = HitForRec;}
65
6464217e 66 Double_t Px() const; // return px
67 Double_t Py() const; // return py
68 Double_t Pz() const; // return pz
69 Double_t P() const; // return total momentum
a9e2aefa 70
2457f726 71 /// necessary for sorting TClonesArray of TrackHit's
72 Bool_t IsSortable () const {return kTRUE;}
73 /// "Compare" function for sorting
74 Int_t Compare(const TObject* TrackParam) const;
de2cd600 75
a9e2aefa 76 void ExtrapToZ(Double_t Z);
77 void ExtrapToStation(Int_t Station, AliMUONTrackParam *TrackParam);
889a0215 78 void ExtrapToVertex(Double_t xVtx, Double_t yVtx, Double_t zVtx); // extrapolation to vertex through the absorber (with true vertex)
79 void BransonCorrection(Double_t xVtx, Double_t yVtx, Double_t zVtx); // makes Branson correction with true vertex
80 // returns total momentum after energy loss correction in the absorber
61adb9bd 81 Double_t TotalMomentumEnergyLoss(Double_t thetaLimit, Double_t pTotal, Double_t theta);
b45fd22b 82 void FieldCorrection(Double_t Z); // makes simple magnetic field correction through the absorber
a9e2aefa 83
f161a467 84 void ExtrapOneStepHelix(Double_t charge, Double_t step,
85 Double_t *vect, Double_t *vout) const;
86 void ExtrapOneStepHelix3(Double_t field, Double_t step,
87 Double_t *vect, Double_t *vout) const;
88
89 void ExtrapOneStepRungekutta(Double_t charge, Double_t step,
90 Double_t* vect, Double_t* vout) const;
6464217e 91
1a38e749 92 virtual void Print(Option_t* opt="") const;
93
2457f726 94 /// set field map
1a38e749 95 void SetField(const AliMagF* magField) {fkField = magField;}
96
6464217e 97
a9e2aefa 98 protected:
99 private:
829425a5 100 Double_t fInverseBendingMomentum; ///< Inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion)
101 Double_t fBendingSlope; ///< Bending slope (cm ** -1)
102 Double_t fNonBendingSlope; ///< Non bending slope (cm ** -1)
103 Double_t fZ; ///< Z coordinate (cm)
104 Double_t fBendingCoor; ///< bending coordinate (cm)
105 Double_t fNonBendingCoor; ///< non bending coordinate (cm)
a9e2aefa 106
1a38e749 107 const AliMagF* fkField; //!< field map
108
a9e2aefa 109 void SetGeant3Parameters(Double_t *VGeant3, Double_t ForwardBackward);
110 void GetFromGeant3Parameters(Double_t *VGeant3, Double_t Charge);
4d03a78e 111
f161a467 112 void GetField(Double_t *Position, Double_t *Field) const;
de2cd600 113
114 AliMUONHitForRec *fHitForRecPtr; //!< Pointer to associated HitForRec if any
115
116 ClassDef(AliMUONTrackParam, 2) // Track parameters in ALICE dimuon spectrometer
a9e2aefa 117 };
118
119#endif