3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 /* History of cvs commits:
11 * Revision 1.57 2006/01/23 17:51:48 hristov
12 * Using the recommended way of forward declarations for TVector and TMatrix (see v5-08-00 release notes). Additional clean-up
14 * Revision 1.56 2005/05/28 14:19:04 schutz
15 * Compilation warnings fixed by T.P.
19 //_________________________________________________________________________
20 // Implementation version v1 of the PHOS particle identifier
21 // Identification is based on information from CPV and EMC
23 //*-- Author: Yves Schutz (SUBATECH), Gustavo Conesa.
25 // --- Standard library ---
27 // --- ROOT system ---
35 #include <TMatrixDfwd.h>
37 // --- AliRoot header files ---
38 class AliPHOSClusterizerv1 ;
39 class AliPHOSCpvRecPoint ;
40 class AliPHOSEmcRecPoint ;
41 class AliPHOSTrackSegmentMakerv1 ;
42 #include "AliPHOSPID.h"
45 class AliPHOSPIDv1 : public AliPHOSPID {
49 AliPHOSPIDv1() ; // ctor
50 AliPHOSPIDv1(const TString alirunFileNameFile, const TString eventFolderName = AliConfig::GetDefaultEventFolderName()) ;
51 AliPHOSPIDv1(const AliPHOSPIDv1 & pid) ; // cpy ctor
53 virtual ~AliPHOSPIDv1() ; // dtor
55 virtual void Exec(Option_t *option); // Does the job
57 //Get file name that contain the PCA
58 const TString GetFileNamePrincipal(TString particle) const;
60 //Get file name that contain PID parameters
61 const TString GetFileNameParameters() const {return fFileNameParameters ;}
63 // Get number of rec.particles in this run
64 virtual Int_t GetRecParticlesInRun() const {return fRecParticlesInRun ;}
67 // Get PID parameters as they are defined in fParameters
68 Float_t GetParameterCalibration (Int_t i) const;
69 Float_t GetParameterCpv2Emc (Int_t i, TString axis) const;
70 Float_t GetParameterTimeGate (Int_t i) const;
71 Float_t GetParameterToCalculateEllipse(TString particle, TString param, Int_t i) const ;
72 Float_t GetParameterPhotonBoundary (Int_t i) const;
73 Float_t GetParameterPi0Boundary (Int_t i) const;
75 // Get energy-dependent PID parameters
76 Float_t GetCalibratedEnergy (Float_t e) const;
77 Float_t GetCpv2EmcDistanceCut (TString axis, Float_t e) const ;
78 Float_t GetEllipseParameter (TString particle, TString param, Float_t e) const;
80 Double_t GetThresholdChargedNeutral () const {return fChargedNeutralThreshold;}
81 Float_t GetTOFEnergyThreshold () const {return fTOFEnThreshold;}
82 Float_t GetDispersionEnergyThreshold () const {return fDispEnThreshold;}
83 Int_t GetDispersionMultiplicityThreshold () const {return fDispMultThreshold;}
86 void SetBayesianPID(Bool_t set){ fBayesian = set ;}
88 // Set PID parameters to change appropriate element of fParameters
89 void SetParameterCalibration (Int_t i, Float_t param);
90 void SetParameterCpv2Emc (Int_t i, TString axis, Float_t cut) ;
91 void SetParameterTimeGate (Int_t i, Float_t gate) ;
92 void SetParameterToCalculateEllipse(TString particle, TString param, Int_t i, Float_t value) ;
93 void SetParameterPhotonBoundary(Int_t i, Float_t param);
94 void SetParameterPi0Boundary (Int_t i, Float_t param);
96 void SetThresholdChargedNeutral (Double_t th) {fChargedNeutralThreshold = th;}
97 void SetTOFEnergyThreshold (Float_t th) {fTOFEnThreshold = th;}
98 void SetDispersionEnergyThreshold (Float_t th) {fDispEnThreshold = th;}
99 void SetDispersionMultiplicityThreshold (Int_t th) {fDispMultThreshold = th;}
101 //Switch to "on flyght" mode, without writing to TreeR and file
102 void SetWriting(Bool_t toWrite = kFALSE){fWrite = toWrite;}
103 void Print(const Option_t * = "") const ;
105 virtual const char * Version() const { return "pid-v1" ; }
107 AliPHOSPIDv1 & operator = (const AliPHOSPIDv1 & /*pid*/) { return *this ;}
111 const TString BranchName() const ;
112 virtual void Init() ;
113 virtual void InitParameters() ;
114 void MakeRecParticles(void ) ;
117 //Functions to calculate the PID probability
118 // Double_t ChargedHadronDistProb(Double_t x, Double_t y, Double_t * parg, Double_t * parl) ;
119 Double_t GausF (Double_t x, Double_t y, Double_t *par) ; //gaussian probability, parameter dependence a+b/(x*x)+c/x
120 Double_t GausPol2(Double_t x, Double_t y, Double_t *par) ; //gaussian probability, parameter dependence a+b*x+c*x*x
121 Double_t LandauF(Double_t x, Double_t y, Double_t *par) ; //gaussian probability, parameter dependence a+b/(x*x)+c/x
122 Double_t LandauPol2(Double_t x, Double_t y, Double_t *par) ; //gaussian probability, parameter dependence a+b*x+c*x*x
123 // Relative Distance CPV-EMC
124 Float_t GetDistance (AliPHOSEmcRecPoint * emc, AliPHOSCpvRecPoint * cpv, Option_t * axis)const ;
125 Int_t GetCPVBit (AliPHOSEmcRecPoint * emc, AliPHOSCpvRecPoint * cpv, Int_t EffPur, Float_t e) const;
126 Int_t GetPrincipalBit (TString particle, const Double_t* P, Int_t EffPur, Float_t e)const ; //Principal cut
127 Int_t GetHardPhotonBit(AliPHOSEmcRecPoint * emc) const;
128 Int_t GetHardPi0Bit (AliPHOSEmcRecPoint * emc) const;
129 TVector3 GetMomentumDirection(AliPHOSEmcRecPoint * emc, AliPHOSCpvRecPoint * cpv)const ;
130 void PrintRecParticles(Option_t * option) ;
131 virtual void WriteRecParticles() ;
132 void SetParameters() ; //Fills the matrix of parameters
136 void SetInitPID(const Double_t * pid) ;
137 void GetInitPID(Double_t * pid) const ;
140 Bool_t fBayesian ; // Do PID bayesian
141 Bool_t fDefaultInit; //! kTRUE if the task was created by defaut ctor (only parameters are initialized)
142 Bool_t fWrite ; //! To write result to file
143 Int_t fNEvent ; //! current event number
144 TString fFileNamePrincipalPhoton ; // File name of the photon principals
145 TString fFileNamePrincipalPi0 ; // File name of the pi0 principals
146 TString fFileNameParameters ; // File name with PID parameters
147 TPrincipal *fPrincipalPhoton ; //! TPrincipal from photon pca file
148 TPrincipal *fPrincipalPi0 ; //! TPrincipal from pi0 pca file
149 Double_t *fX ; //! Shower shape for the principal data
150 Double_t *fPPhoton ; //! Principal photon eigenvalues
151 Double_t *fPPi0 ; //! Principal pi0 eigenvalues
152 Int_t fRecParticlesInRun ; //! Total number of recparticles in one run
153 TMatrixF *fParameters; //! Matrix of identification Parameters
155 //Initial pid population
156 Double_t fInitPID[AliPID::kSPECIESN] ; // Initial population to do bayesian PID
157 // pid probability function parameters
159 Double_t fTphoton[3] ; // gaussian tof response for photon
160 TFormula * fTFphoton ; // the formula
161 Double_t fTpiong[3] ; // gaussian tof response for pions
162 TFormula * fTFpiong ; // the formula
163 Double_t fTkaong[3] ; // landau tof response for kaons
164 TFormula * fTFkaong ; // the formula
165 Double_t fTkaonl[3] ; // landau tof response for kaons
166 TFormula * fTFkaonl ; // the formula
167 Double_t fThhadrong[3] ; // gaus tof response for heavy hadrons
168 TFormula * fTFhhadrong ; // the formula
169 Double_t fThhadronl[3] ; // landau tof response for heavy hadrons
170 TFormula * fTFhhadronl ; // the formula
173 Double_t fDmuon[3] ; // gaussian ss response for muon
174 TFormula * fDFmuon ; // the formula
175 Double_t fDphoton[10] ; // gaussian ss response for EM
176 Double_t fDpi0[10] ; // gaussian ss response for pi0
177 Double_t fDhadron[10] ; // gaussian ss response for hadrons
179 Double_t fXelectron[10] ; // gaussian emc-cpv distance response for electron
180 Double_t fXcharged[10] ; // landau emc-cpv distance response for charged part (no elect) */
181 Double_t fZelectron[10] ; // gaussian emc-cpv distance response for electron
182 Double_t fZcharged[10] ; // landau emc-cpv distance response for charged part (no elect) */
185 Double_t fERecWeightPar[4] ; // gaussian tof response for photon
186 TFormula * fERecWeight ; // the formula
187 Double_t fChargedNeutralThreshold ; //Threshold to differentiate between charged and neutral
188 Float_t fTOFEnThreshold; //Maximum energy to use TOF
189 Float_t fDispEnThreshold; //Minimum energy to use shower shape
190 Int_t fDispMultThreshold ; //Minimum multiplicity to use shower shape
192 ClassDef( AliPHOSPIDv1,12) // Particle identifier implementation version 1
196 #endif // AliPHOSPIDV1_H