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 1.60 2007/04/01 15:40:15 kharlov
12 * Correction for actual vertex position implemented
14 * Revision 1.59 2007/03/06 06:57:46 kharlov
15 * DP:calculation of distance to CPV done in TSM
17 * Revision 1.58 2006/04/12 11:32:03 alibrary
18 * Simplification of Makefile and some small corrections
20 * Revision 1.57 2006/01/23 17:51:48 hristov
21 * Using the recommended way of forward declarations for TVector and TMatrix (see v5-08-00 release notes). Additional clean-up
23 * Revision 1.56 2005/05/28 14:19:04 schutz
24 * Compilation warnings fixed by T.P.
28 //_________________________________________________________________________
29 // Implementation version v1 of the PHOS particle identifier
30 // Identification is based on information from CPV and EMC
32 //*-- Author: Yves Schutz (SUBATECH), Gustavo Conesa.
34 // --- Standard library ---
36 // --- ROOT system ---
44 #include <TMatrixDfwd.h>
46 // --- AliRoot header files ---
47 class AliPHOSClusterizerv1 ;
48 class AliPHOSCpvRecPoint ;
49 class AliPHOSEmcRecPoint ;
50 class AliPHOSTrackSegment ;
51 class AliPHOSTrackSegmentMakerv1 ;
52 #include "AliPHOSPID.h"
55 class AliPHOSPIDv1 : public AliPHOSPID {
59 AliPHOSPIDv1() ; // ctor
60 AliPHOSPIDv1(AliPHOSGeometry *geom);
61 AliPHOSPIDv1(const AliPHOSPIDv1 & pid) ; // cpy ctor
63 virtual ~AliPHOSPIDv1() ; // dtor
65 virtual void TrackSegments2RecParticles(Option_t *option); // Does the job
67 //Get file name that contain the PCA
68 const TString GetFileNamePrincipal(TString particle) const;
70 //Get file name that contain PID parameters
71 const TString GetFileNameParameters() const {return fFileNameParameters ;}
73 // Get PID parameters as they are defined in fParameters
74 Float_t GetParameterCalibration (Int_t i) const;
75 Float_t GetParameterCpv2Emc (Int_t i, TString axis) const;
76 Float_t GetParameterTimeGate (Int_t i) const;
77 Float_t GetParameterToCalculateEllipse(TString particle, TString param, Int_t i) const ;
78 Float_t GetParameterPhotonBoundary (Int_t i) const;
79 Float_t GetParameterPi0Boundary (Int_t i) const;
81 // Get energy-dependent PID parameters
82 Float_t GetCalibratedEnergy (Float_t e) const;
83 Float_t GetCpv2EmcDistanceCut (TString axis, Float_t e) const ;
84 Float_t GetEllipseParameter (TString particle, TString param, Float_t e) const;
86 Double_t GetThresholdChargedNeutral () const {return fChargedNeutralThreshold;}
87 Float_t GetTOFEnergyThreshold () const {return fTOFEnThreshold;}
88 Float_t GetDispersionEnergyThreshold () const {return fDispEnThreshold;}
89 Int_t GetDispersionMultiplicityThreshold () const {return fDispMultThreshold;}
92 void SetBayesianPID(Bool_t set){ fBayesian = set ;}
94 // Set PID parameters to change appropriate element of fParameters
95 void SetParameterCalibration (Int_t i, Float_t param);
96 void SetParameterCpv2Emc (Int_t i, TString axis, Float_t cut) ;
97 void SetParameterTimeGate (Int_t i, Float_t gate) ;
98 void SetParameterToCalculateEllipse(TString particle, TString param, Int_t i, Float_t value) ;
99 void SetParameterPhotonBoundary(Int_t i, Float_t param);
100 void SetParameterPi0Boundary (Int_t i, Float_t param);
102 void SetThresholdChargedNeutral (Double_t th) {fChargedNeutralThreshold = th;}
103 void SetTOFEnergyThreshold (Float_t th) {fTOFEnThreshold = th;}
104 void SetDispersionEnergyThreshold (Float_t th) {fDispEnThreshold = th;}
105 void SetDispersionMultiplicityThreshold (Int_t th) {fDispMultThreshold = th;}
107 //Switch to "on flyght" mode, without writing to TreeR and file
108 void SetWriting(Bool_t toWrite = kFALSE){fWrite = toWrite;}
109 void Print(const Option_t * = "") const ;
111 void GetVertex(void) ; //Extracts vertex in current event
113 virtual const char * Version() const { return "pid-v1" ; }
115 AliPHOSPIDv1 & operator = (const AliPHOSPIDv1 & /*pid*/) { return *this ;}
119 virtual void InitParameters() ;
120 void MakeRecParticles(void ) ;
123 //Functions to calculate the PID probability
124 // Double_t ChargedHadronDistProb(Double_t x, Double_t y, Double_t * parg, Double_t * parl) ;
125 Double_t GausF (Double_t x, Double_t y, Double_t *par) ; //gaussian probability, parameter dependence a+b/(x*x)+c/x
126 Double_t GausPol2(Double_t x, Double_t y, Double_t *par) ; //gaussian probability, parameter dependence a+b*x+c*x*x
127 Double_t LandauF(Double_t x, Double_t y, Double_t *par) ; //gaussian probability, parameter dependence a+b/(x*x)+c/x
128 Double_t LandauPol2(Double_t x, Double_t y, Double_t *par) ; //gaussian probability, parameter dependence a+b*x+c*x*x
129 // Relative Distance CPV-EMC
130 Int_t GetCPVBit (AliPHOSTrackSegment * ts, Int_t EffPur, Float_t e) const;
131 Int_t GetPrincipalBit (TString particle, const Double_t* P, Int_t EffPur, Float_t e)const ; //Principal cut
132 Int_t GetHardPhotonBit(AliPHOSEmcRecPoint * emc) const;
133 Int_t GetHardPi0Bit (AliPHOSEmcRecPoint * emc) const;
134 TVector3 GetMomentumDirection(AliPHOSEmcRecPoint * emc, AliPHOSCpvRecPoint * cpv)const ;
135 void PrintRecParticles(Option_t * option) ;
136 void SetParameters() ; //Fills the matrix of parameters
139 void SetInitPID(const Double_t * pid) ;
140 void GetInitPID(Double_t * pid) const ;
143 Bool_t fBayesian ; // Do PID bayesian
144 Bool_t fDefaultInit; //! kTRUE if the task was created by defaut ctor (only parameters are initialized)
145 Bool_t fWrite ; //! To write result to file
146 TString fFileNamePrincipalPhoton ; // File name of the photon principals
147 TString fFileNamePrincipalPi0 ; // File name of the pi0 principals
148 TString fFileNameParameters ; // File name with PID parameters
149 TPrincipal *fPrincipalPhoton ; //! TPrincipal from photon pca file
150 TPrincipal *fPrincipalPi0 ; //! TPrincipal from pi0 pca file
151 Double_t *fX ; //! Shower shape for the principal data
152 Double_t *fPPhoton ; //! Principal photon eigenvalues
153 Double_t *fPPi0 ; //! Principal pi0 eigenvalues
154 TMatrixF *fParameters; //! Matrix of identification Parameters
156 TVector3 fVtx ; //! Vertex position in current event
158 //Initial pid population
159 Double_t fInitPID[AliPID::kSPECIESN] ; // Initial population to do bayesian PID
160 // pid probability function parameters
162 Double_t fTphoton[3] ; // gaussian tof response for photon
163 TFormula * fTFphoton ; // the formula
164 Double_t fTpiong[3] ; // gaussian tof response for pions
165 TFormula * fTFpiong ; // the formula
166 Double_t fTkaong[3] ; // landau tof response for kaons
167 TFormula * fTFkaong ; // the formula
168 Double_t fTkaonl[3] ; // landau tof response for kaons
169 TFormula * fTFkaonl ; // the formula
170 Double_t fThhadrong[3] ; // gaus tof response for heavy hadrons
171 TFormula * fTFhhadrong ; // the formula
172 Double_t fThhadronl[3] ; // landau tof response for heavy hadrons
173 TFormula * fTFhhadronl ; // the formula
176 Double_t fDmuon[3] ; // gaussian ss response for muon
177 TFormula * fDFmuon ; // the formula
178 Double_t fDphoton[10] ; // gaussian ss response for EM
179 Double_t fDpi0[10] ; // gaussian ss response for pi0
180 Double_t fDhadron[10] ; // gaussian ss response for hadrons
182 Double_t fXelectron[10] ; // gaussian emc-cpv distance response for electron
183 Double_t fXcharged[10] ; // landau emc-cpv distance response for charged part (no elect) */
184 Double_t fZelectron[10] ; // gaussian emc-cpv distance response for electron
185 Double_t fZcharged[10] ; // landau emc-cpv distance response for charged part (no elect) */
188 Double_t fERecWeightPar[4] ; // gaussian tof response for photon
189 TFormula * fERecWeight ; // the formula
190 Double_t fChargedNeutralThreshold ; //Threshold to differentiate between charged and neutral
191 Float_t fTOFEnThreshold; //Maximum energy to use TOF
192 Float_t fDispEnThreshold; //Minimum energy to use shower shape
193 Int_t fDispMultThreshold ; //Minimum multiplicity to use shower shape
195 ClassDef( AliPHOSPIDv1,13) // Particle identifier implementation version 1
199 #endif // AliPHOSPIDV1_H