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Included also 3 and 4 prong decays; added variables to ntuple
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1 #ifndef ALIMAGF_H
2 #define ALIMAGF_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4  * See cxx source for full Copyright notice                               */
5
6 //
7 // Interface between the TVirtualMagField and AliMagWrapCheb: wrapper to
8 // the set of magnetic field data + Tosca parameterization by 
9 // Chebyshev polynomials
10 // 
11 // Author: ruben.shahoyan@cern.ch
12 //
13
14 //#include <TGeoGlobalMagField.h>
15 #include <TVirtualMagField.h>
16 class AliMagWrapCheb;
17
18 class AliMagF : public TVirtualMagField
19 {
20  public:
21   enum BMap_t      {k2kG, k5kG, k5kGUniform};
22   enum BeamType_t  {kBeamTypeAA, kBeamTypepp, kNoBeamField};
23   //
24   AliMagF();
25   AliMagF(const char *name, const char* title, Int_t integ, 
26           Double_t factorSol=1., Double_t factorDip=1., 
27           Double_t fmax=15, BMap_t maptype = k5kG,
28           const char* path="$(ALICE_ROOT)/data/maps/mfchebKGI_sym.root",
29           BeamType_t btype=kBeamTypepp, Double_t benergy=7000.);
30   AliMagF(const AliMagF& src);             
31   AliMagF& operator=(const AliMagF& src);
32   virtual ~AliMagF();
33   //
34   virtual void Field(const Double_t *x, Double_t *b);
35   void       GetTPCInt(const Double_t *xyz, Double_t *b)        const;
36   void       GetTPCIntCyl(const Double_t *rphiz, Double_t *b)   const;
37   Double_t   GetBz(const Double_t *xyz)                         const;
38   //
39   AliMagWrapCheb* GetMeasuredMap()                              const {return fMeasuredMap;}
40   //
41   // former AliMagF methods or their aliases
42   void         SetFactorSol(Float_t fc=1.)                            {fFactorSol = fc;}
43   void         SetFactorDip(Float_t fc=1.)                            {fFactorDip = fc;}
44   Double_t     GetFactorSol()                                   const {return fFactorSol;}
45   Double_t     GetFactorDip()                                   const {return fFactorSol;}
46   Double_t     Factor()                                         const {return GetFactorSol();}
47   Bool_t       IsUniform()                                      const {return fMapType == k5kGUniform;}
48   //
49   void         MachineField(const Double_t  *x, Double_t *b)    const;
50   BMap_t       GetMapType()                                     const {return fMapType;}
51   BeamType_t   GetBeamType()                                    const {return fBeamType;}
52   Double_t     GetBeamEnergy()                                  const {return fBeamEnergy;}
53   Double_t     Max()                                            const {return fMax;}
54   Int_t        Integ()                                          const {return fInteg;}
55   Int_t        PrecInteg()                                      const {return fPrecInteg;}  
56   Double_t     SolenoidField()                                  const {return fFactorSol*fSolenoid;}
57   //
58   Char_t*      GetDataFileName()                                const {return (Char_t*)fParNames.GetName();}
59   Char_t*      GetParamName()                                   const {return (Char_t*)fParNames.GetTitle();}
60   void         SetDataFileName(const Char_t* nm)                      {fParNames.SetName(nm);}
61   void         SetParamName(const Char_t* nm)                         {fParNames.SetTitle(nm);}
62   //
63   Bool_t       LoadParameterization();
64   //
65  protected:
66   // not supposed to be changed during the run, set only at the initialization via constructor
67   void         InitMachineField(BeamType_t btype, Double_t benergy);
68   void         SetBeamType(BeamType_t type)                           {fBeamType = type;}
69   void         SetBeamEnergy(Float_t energy)                          {fBeamEnergy = energy;}
70   //
71  protected:
72   AliMagWrapCheb*  fMeasuredMap;     //! Measured part of the field map
73   BMap_t           fMapType;         // field map type
74   Double_t         fSolenoid;        // Solenoid field setting
75   BeamType_t       fBeamType;        // Beam type: A-A (fBeamType=0) or p-p (fBeamType=1)
76   Double_t         fBeamEnergy;      // Beam energy in GeV
77   // 
78   Int_t            fInteg;           // Default integration method as indicated in Geant
79   Int_t            fPrecInteg;       // Alternative integration method, e.g. for higher precision
80   Double_t         fFactorSol;       // Multiplicative factor for solenoid
81   Double_t         fFactorDip;       // Multiplicative factor for dipole
82   Double_t         fMax;             // Max Field as indicated in Geant
83   Bool_t           fDipoleOFF;       // Dipole ON/OFF flag
84   //
85   Double_t         fQuadGradient;    // Gradient field for inner triplet quadrupoles
86   Double_t         fDipoleField;     // Field value for D1 and D2 dipoles
87   Double_t         fCCorrField;      // Side C 2nd compensator field
88   Double_t         fACorr1Field;     // Side A 1st compensator field 
89   Double_t         fACorr2Field;     // Side A 2nd compensator field
90   //
91   TNamed           fParNames;        // file and parameterization loadad
92   //
93   static const Double_t  fgkSol2DipZ;    // conventional Z of transition from L3 to Dipole field 
94   //   
95   ClassDef(AliMagF, 2)           // Class for all Alice MagField wrapper for measured data + Tosca parameterization
96 };
97
98
99 #endif