Line data    Source code

       1             : /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
       2             :  * See cxx source for full Copyright notice                               */
       3             : 
       4             : /// \class AliTPCExBFirst
       5             : /// \brief An approximate (first order) implementation of the ExB effect.
       6             : 
       7             : #ifndef ALITPCEXBFIRST_H
       8             : #define ALITPCEXBFIRST_H
       9             : 
      10             : #include "AliTPCExB.h"
      11             : //class AliFieldMap;
      12             : class AliMagF;
      13             : 
      14             : class AliTPCExBFirst:public AliTPCExB {
      15             : public:
      16             :   AliTPCExBFirst();
      17             :   //  AliTPCExBFirst(const AliFieldMap *bFieldMap,Double_t driftVelocity);
      18             :   AliTPCExBFirst(const AliMagF *bField,Double_t driftVelocity,
      19             :                  Int_t nx=100,Int_t ny=100,Int_t nz=100);
      20             :   virtual ~AliTPCExBFirst();
      21             :   virtual void Correct(const Double_t *position,Double_t *corrected);
      22             :   void TestThisBeautifulObject(const char* fileName);
      23             :   void SetDriftVelocity(Double_t driftVelocity) {
      24           0 :     fDriftVelocity=driftVelocity;
      25           0 :   };
      26             : protected:
      27             :   Double_t fDriftVelocity; ///< The electron drift velocity.
      28             : private:
      29             :   AliTPCExBFirst& operator=(const AliTPCExBFirst&); // don't assign me
      30             :   AliTPCExBFirst(const AliTPCExBFirst&); // don't copy me
      31             :   //  void ConstructCommon(const AliFieldMap *bFieldMap,const AliMagF *bField);
      32             :   void ConstructCommon(const AliMagF *bField);
      33             :   void GetMeanFields(Double_t rx,Double_t ry,Double_t rz,
      34             :                      Double_t *Bx,Double_t *By) const;
      35             :   Int_t fkNX;         ///< field mesh points in x direction
      36             :   Int_t fkNY;         ///< field mesh points in y direction
      37             :   Int_t fkNZ;         ///< field mesh points in z direction
      38             :   Double_t fkXMin;    ///< the first grid point in x direction
      39             :   Double_t fkXMax;    ///< the last grid point in x direction
      40             :   Double_t fkYMin;    ///< the first grid point in y direction
      41             :   Double_t fkYMax;    ///< the last grid point in y direction
      42             :   Double_t fkZMin;    ///< the first grid point in z direction
      43             :   Double_t fkZMax;    ///< the last grid point in z direction
      44             :   Int_t fkNMean;      ///< size of the tablE the mean fields
      45             :   /// the mean field in x direction upto a certain z value
      46             :   Double_t *fkMeanBx; //[fkNMean]
      47             :   /// the mean field in y direction upto a certain z value
      48             :   Double_t *fkMeanBy; //[fkNMean]
      49             :   Double_t fkMeanBz;  ///< the mean field in z direction inside the TPC volume
      50             :   static const Double_t fgkEM; //!<! elementary charge over electron mass (C/kg)
      51             :   static const Double_t fgkDriftField; //!<! the TPC drift field (V/m) (modulus)
      52             : 
      53             :   /// \cond CLASSIMP
      54          24 :   ClassDef(AliTPCExBFirst,2)
      55             :   /// \endcond
      56             : };
      57             : 
      58             : #endif