#ifndef ALI_TPC_CORRECTION_H #define ALI_TPC_CORRECTION_H /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * See cxx source for full Copyright notice */ //////////////////////////////////////////////////////////////////////////////// // AliTPCCorrection class // //////////////////////////////////////////////////////////////////////////////// #include #include "TMatrixD.h" #include "TMatrixF.h" class TH2F; class TTimeStamp; class TCollection; class TTreeSRedirector; class AliExternalTrackParam; class TTree; class THnSparse; class AliESDVertex; class AliTPCCorrection : public TNamed { public: enum CompositionType {kParallel,kQueue}; AliTPCCorrection(); AliTPCCorrection(const char *name,const char *title); virtual ~AliTPCCorrection(); // functions to correct a space point void CorrectPoint ( Float_t x[],const Short_t roc); void CorrectPointLocal(Float_t x[],const Short_t roc); void CorrectPoint (const Float_t x[],const Short_t roc,Float_t xp[]); virtual void GetCorrection(const Float_t x[],const Short_t roc,Float_t dx[]); // functions to distort a space point void DistortPoint ( Float_t x[],const Short_t roc); void DistortPointLocal(Float_t x[],const Short_t roc); void DistortPoint (const Float_t x[],const Short_t roc,Float_t xp[]); virtual void GetDistortion(const Float_t x[],const Short_t roc,Float_t dx[]); // initialization and update functions virtual void Init(); virtual void Update(const TTimeStamp &timeStamp); // convenience functions virtual void Print(Option_t* option="") const; TH2F* CreateHistoDRinXY (Float_t z=10.,Int_t nx=100,Int_t ny=100); TH2F* CreateHistoDRPhiinXY(Float_t z=10.,Int_t nx=100,Int_t nphi=100); TH2F* CreateHistoDZinXY (Float_t z=10.,Int_t nx=100,Int_t ny=100); TH2F* CreateHistoDRinZR (Float_t phi=0.,Int_t nZ=100,Int_t nR=100); TH2F* CreateHistoDRPhiinZR(Float_t phi=0.,Int_t nZ=100,Int_t nR=100); TH2F* CreateHistoDZinZR (Float_t phi=0.,Int_t nZ=100,Int_t nR=100); TTree* CreateDistortionTree(Double_t step=5); static void MakeDistortionMap(THnSparse * his0, TTreeSRedirector *pcstream, const char* hname, Int_t run, Float_t refX, Int_t type, Int_t integ=1); static void MakeDistortionMapCosmic(THnSparse * his0, TTreeSRedirector *pcstream, const char* hname, Int_t run, Float_t refX, Int_t type); static void MakeDistortionMapSector(THnSparse * his0, TTreeSRedirector *pcstream, const char* hname, Int_t run, Int_t type); // normally called directly in the correction classes which inherit from this class virtual void SetOmegaTauT1T2(Float_t omegaTau,Float_t t1,Float_t t2); AliExternalTrackParam * FitDistortedTrack(AliExternalTrackParam & trackIn, Double_t refX, Int_t dir,TTreeSRedirector *pcstream); void StoreInOCDB(Int_t startRun, Int_t endRun, const char *comment=0); static void MakeTrackDistortionTree(TTree *tinput, Int_t dtype, Int_t ptype, const TObjArray * corrArray, Int_t step=1, Int_t offset=0, Bool_t debug=0); static void MakeSectorDistortionTree(TTree *tinput, Int_t dtype, Int_t ptype, const TObjArray * corrArray, Int_t step=1, Int_t offset=0, Bool_t debug=0); static void MakeLaserDistortionTreeOld(TTree* tree, TObjArray *corrArray, Int_t itype); static void MakeLaserDistortionTree(TTree* tree, TObjArray *corrArray, Int_t itype); void FastSimDistortedVertex(Double_t orgVertex[3], Int_t nTracks, AliESDVertex &aV, AliESDVertex &avOrg, AliESDVertex &cV, AliESDVertex &cvOrg, TTreeSRedirector * const pcstream, Double_t etaCuts); static void AddVisualCorrection(AliTPCCorrection* corr, Int_t position); static Double_t GetCorrSector(Double_t sector, Double_t r, Double_t kZ, Int_t axisType, Int_t corrType=0); static Double_t GetCorrXYZ(Double_t gx, Double_t gy, Double_t gz, Int_t axisType, Int_t corrType=0); protected: TH2F* CreateTH2F(const char *name,const char *title, const char *xlabel,const char *ylabel,const char *zlabel, Int_t nbinsx,Double_t xlow,Double_t xup, Int_t nbinsy,Double_t ylow,Double_t yup); static const Double_t fgkTPCZ0; // nominal gating grid position static const Double_t fgkIFCRadius; // Mean Radius of the Inner Field Cage ( 82.43 min, 83.70 max) (cm) static const Double_t fgkOFCRadius; // Mean Radius of the Outer Field Cage (252.55 min, 256.45 max) (cm) static const Double_t fgkZOffSet; // Offset from CE: calculate all distortions closer to CE as if at this point static const Double_t fgkCathodeV; // Cathode Voltage (volts) static const Double_t fgkGG; // Gating Grid voltage (volts) static const Double_t fgkdvdE; // [cm/V] drift velocity dependency on the E field (from Magboltz for NeCO2N2 at standard environment) static const Double_t fgkEM; // charge/mass in [C/kg] static const Double_t fgke0; // vacuum permittivity [A·s/(V·m)] enum {kNR= 72 }; // Number of R points in the table for interpolating distortion data enum {kNPhi= 18*10+1}; // Number of Phi points in the table for interpolating distortion data ( plus one extra for 360 == 0 ) enum {kNZ= 166}; // Number of Z points in the table for interpolating distortion data Double_t fgkRList[kNR]; // points in the radial direction (for the lookup table) Double_t fgkPhiList[kNPhi]; // points in the phi direction (for the lookup table) Double_t fgkZList[kNZ]; // points in the z direction (for the lookup table) // Simple Interpolation functions: e.g. with tricubic interpolation (not yet in TH3) Int_t fILow, fJLow, fKLow; // variable to help in the interpolation // Double_t versions void Interpolate2DEdistortion( const Int_t order, const Double_t r, const Double_t z, const Double_t er[kNZ][kNR], Double_t &erValue ); void Interpolate3DEdistortion( const Int_t order, const Double_t r, const Float_t phi, const Double_t z, const Double_t er[kNZ][kNPhi][kNR], const Double_t ephi[kNZ][kNPhi][kNR], const Double_t ez[kNZ][kNPhi][kNR], Double_t &erValue, Double_t &ephiValue, Double_t &ezValue); // TMatrixD versions (for e.g. Poisson relaxation) Double_t Interpolate2DTable( const Int_t order, const Double_t x, const Double_t y, const Int_t nx, const Int_t ny, const Double_t xv[], const Double_t yv[], const TMatrixD &array ); Double_t Interpolate3DTable( const Int_t order, const Double_t x, const Double_t y, const Double_t z, const Int_t nx, const Int_t ny, const Int_t nz, const Double_t xv[], const Double_t yv[], const Double_t zv[], TMatrixD **arrayofArrays ); Double_t Interpolate( const Double_t xArray[], const Double_t yArray[], const Int_t order, const Double_t x ); void Search( const Int_t n, const Double_t xArray[], const Double_t x, Int_t &low ); // TMatrixF versions (smaller size, e.g. for final look up table) Float_t Interpolate2DTable( const Int_t order, const Double_t x, const Double_t y, const Int_t nx, const Int_t ny, const Double_t xv[], const Double_t yv[], const TMatrixF &array ); Float_t Interpolate3DTable( const Int_t order, const Double_t x, const Double_t y, const Double_t z, const Int_t nx, const Int_t ny, const Int_t nz, const Double_t xv[], const Double_t yv[], const Double_t zv[], TMatrixF **arrayofArrays ); Float_t Interpolate( const Double_t xArray[], const Float_t yArray[], const Int_t order, const Double_t x ); virtual Int_t IsPowerOfTwo ( Int_t i ) const ; // Algorithms to solve the laplace or poisson equation void PoissonRelaxation2D(TMatrixD &arrayV, TMatrixD &chargeDensity, TMatrixD &arrayErOverEz, TMatrixD &arrayDeltaEz, const Int_t rows, const Int_t columns, const Int_t iterations, const Bool_t rocDisplacement = kTRUE); void PoissonRelaxation3D( TMatrixD **arrayofArrayV, TMatrixD **arrayofChargeDensities, TMatrixD **arrayofEroverEz, TMatrixD **arrayofEPhioverEz, TMatrixD **arrayofEz, const Int_t rows, const Int_t columns, const Int_t phislices, const Float_t deltaphi, const Int_t iterations, const Int_t summetry, const Bool_t rocDisplacement = kTRUE); protected: Double_t fT1; // tensor term of wt - T1 Double_t fT2; // tensor term of wt - T2 static TObjArray *fgVisualCorrection; // array of orrection for visualization private: AliTPCCorrection(const AliTPCCorrection &); // not implemented AliTPCCorrection &operator=(const AliTPCCorrection &); // not implemented void InitLookUpfulcrums(); // to initialize the grid of the look up table ClassDef(AliTPCCorrection,4); }; #endif