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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 | /*$Id$*/ |
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7 | // Revision of includes 07/05/2004 |
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8 | |
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9 | /////////////////////////////////////////////////// |
10 | // Track parameters in ALICE dimuon spectrometer |
11 | /////////////////////////////////////////////////// |
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12 | |
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13 | #include <TObject.h> |
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14 | |
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15 | class AliMUONTrackParam : public TObject |
16 | { |
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17 | public: |
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18 | AliMUONTrackParam(); // Constructor |
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19 | virtual ~AliMUONTrackParam(){} // Destructor |
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20 | |
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21 | AliMUONTrackParam(const AliMUONTrackParam& rhs);// copy constructor (should be added per default !) |
22 | AliMUONTrackParam& operator=(const AliMUONTrackParam& rhs);// (should be added per default !) |
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23 | // Get and Set methods for data |
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24 | Double_t GetInverseBendingMomentum(void) const {return fInverseBendingMomentum;} |
25 | void SetInverseBendingMomentum(Double_t InverseBendingMomentum) {fInverseBendingMomentum = InverseBendingMomentum;} |
26 | Double_t GetBendingSlope(void) const {return fBendingSlope;} |
27 | void SetBendingSlope(Double_t BendingSlope) {fBendingSlope = BendingSlope;} |
28 | Double_t GetNonBendingSlope(void) const {return fNonBendingSlope;} |
29 | void SetNonBendingSlope(Double_t NonBendingSlope) {fNonBendingSlope = NonBendingSlope;} |
30 | Double_t GetZ(void) const {return fZ;} |
31 | void SetZ(Double_t Z) {fZ = Z;} |
32 | Double_t GetBendingCoor(void) const {return fBendingCoor;} |
33 | void SetBendingCoor(Double_t BendingCoor) {fBendingCoor = BendingCoor;} |
34 | Double_t GetNonBendingCoor(void) const {return fNonBendingCoor;} |
35 | void SetNonBendingCoor(Double_t NonBendingCoor) {fNonBendingCoor = NonBendingCoor;} |
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36 | Double_t Px(); // return px |
37 | Double_t Py(); // return py |
38 | Double_t Pz(); // return pz |
39 | Double_t P(); // return total momentum |
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40 | |
41 | void ExtrapToZ(Double_t Z); |
42 | void ExtrapToStation(Int_t Station, AliMUONTrackParam *TrackParam); |
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43 | void ExtrapToVertex(Double_t xVtx, Double_t yVtx, Double_t zVtx); // extrapolation to vertex through the absorber (with true vertex) |
44 | void BransonCorrection(Double_t xVtx, Double_t yVtx, Double_t zVtx); // makes Branson correction with true vertex |
45 | // returns total momentum after energy loss correction in the absorber |
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46 | Double_t TotalMomentumEnergyLoss(Double_t thetaLimit, Double_t pTotal, Double_t theta); |
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47 | void FieldCorrection(Double_t Z); // makes simple magnetic field correction through the absorber |
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48 | |
49 | protected: |
50 | private: |
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51 | Double_t fInverseBendingMomentum; // Inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion) |
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52 | Double_t fBendingSlope; // Bending slope (cm ** -1) |
53 | Double_t fNonBendingSlope; // Non bending slope (cm ** -1) |
54 | Double_t fZ; // Z coordinate (cm) |
55 | Double_t fBendingCoor; // bending coordinate (cm) |
56 | Double_t fNonBendingCoor; // non bending coordinate (cm) |
57 | |
58 | void SetGeant3Parameters(Double_t *VGeant3, Double_t ForwardBackward); |
59 | void GetFromGeant3Parameters(Double_t *VGeant3, Double_t Charge); |
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60 | void ExtrapOneStepHelix(Double_t charge, Double_t step, |
61 | Double_t *vect, Double_t *vout); |
62 | void ExtrapOneStepHelix3(Double_t field, Double_t step, |
63 | Double_t *vect, Double_t *vout); |
64 | |
65 | void ExtrapOneStepRungekutta(Double_t charge, Double_t step, |
66 | Double_t* vect, Double_t* vout); |
67 | |
68 | void GetField(Double_t *Position, Double_t *Field); |
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69 | |
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70 | ClassDef(AliMUONTrackParam, 1) // Track parameters in ALICE dimuon spectrometer |
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71 | }; |
72 | |
73 | #endif |