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1#ifndef ALIPHOSPIDV1_H
2#define ALIPHOSPIDV1_H
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6/* $Id$ */
7
8/* History of cvs commits:
9 *
10 * $Log$
11 * Revision 1.56 2005/05/28 14:19:04 schutz
12 * Compilation warnings fixed by T.P.
13 *
14 */
15
16//_________________________________________________________________________
17// Implementation version v1 of the PHOS particle identifier
18// Identification is based on information from CPV and EMC
19// Oh yeah
20//*-- Author: Yves Schutz (SUBATECH), Gustavo Conesa.
21
22// --- ROOT system ---
23#include <TMatrixFfwd.h>
24
25class TVector3 ;
26class TPrincipal ;
27class TROOT ;
28class TTree ;
29class TCanvas ;
30class TFolder ;
31class TFormula;
32// --- Standard library ---
33// --- AliRoot header files ---
34class AliPHOSEmcRecPoint ;
35class AliPHOSCpvRecPoint ;
36class AliPHOSClusterizerv1 ;
37class AliPHOSTrackSegmentMakerv1 ;
38
39#include "AliPHOSPID.h"
40#include "AliPID.h"
41class AliPHOSPIDv1 : public AliPHOSPID {
42
43public:
44
45 AliPHOSPIDv1() ; // ctor
46 AliPHOSPIDv1(const TString alirunFileNameFile, const TString eventFolderName = AliConfig::GetDefaultEventFolderName()) ;
47 AliPHOSPIDv1(const AliPHOSPIDv1 & pid) ; // cpy ctor
48
49 virtual ~AliPHOSPIDv1() ; // dtor
50
51 virtual void Exec(Option_t *option); // Does the job
52
53 //Get file name that contain the PCA
54 const TString GetFileNamePrincipal(TString particle) const;
55
56 //Get file name that contain PID parameters
57 const TString GetFileNameParameters() const {return fFileNameParameters ;}
58
59 // Get number of rec.particles in this run
60 virtual Int_t GetRecParticlesInRun() const {return fRecParticlesInRun ;}
61
62
63 // Get PID parameters as they are defined in fParameters
64 Float_t GetParameterCalibration (Int_t i) const;
65 Float_t GetParameterCpv2Emc (Int_t i, TString axis) const;
66 Float_t GetParameterTimeGate (Int_t i) const;
67 Float_t GetParameterToCalculateEllipse(TString particle, TString param, Int_t i) const ;
68 Float_t GetParameterPhotonBoundary (Int_t i) const;
69 Float_t GetParameterPi0Boundary (Int_t i) const;
70
71 // Get energy-dependent PID parameters
72 Float_t GetCalibratedEnergy (Float_t e) const;
73 Float_t GetCpv2EmcDistanceCut (TString axis, Float_t e) const ;
74 Float_t GetEllipseParameter (TString particle, TString param, Float_t e) const;
75
76 Double_t GetThresholdChargedNeutral () const {return fChargedNeutralThreshold;}
77 Float_t GetTOFEnergyThreshold () const {return fTOFEnThreshold;}
78 Float_t GetDispersionEnergyThreshold () const {return fDispEnThreshold;}
79 Int_t GetDispersionMultiplicityThreshold () const {return fDispMultThreshold;}
80
81 //Do bayesian PID
82 void SetBayesianPID(Bool_t set){ fBayesian = set ;}
83
84 // Set PID parameters to change appropriate element of fParameters
85 void SetParameterCalibration (Int_t i, Float_t param);
86 void SetParameterCpv2Emc (Int_t i, TString axis, Float_t cut) ;
87 void SetParameterTimeGate (Int_t i, Float_t gate) ;
88 void SetParameterToCalculateEllipse(TString particle, TString param, Int_t i, Float_t value) ;
89 void SetParameterPhotonBoundary(Int_t i, Float_t param);
90 void SetParameterPi0Boundary (Int_t i, Float_t param);
91
92 void SetThresholdChargedNeutral (Double_t th) {fChargedNeutralThreshold = th;}
93 void SetTOFEnergyThreshold (Float_t th) {fTOFEnThreshold = th;}
94 void SetDispersionEnergyThreshold (Float_t th) {fDispEnThreshold = th;}
95 void SetDispersionMultiplicityThreshold (Int_t th) {fDispMultThreshold = th;}
96
97 //Switch to "on flyght" mode, without writing to TreeR and file
98 void SetWriting(Bool_t toWrite = kFALSE){fWrite = toWrite;}
99 void Print(const Option_t * = "") const ;
100
101 virtual const char * Version() const { return "pid-v1" ; }
102
103 AliPHOSPIDv1 & operator = (const AliPHOSPIDv1 & /*pid*/) { return *this ;}
104
105private:
106
107 const TString BranchName() const ;
108 virtual void Init() ;
109 virtual void InitParameters() ;
110 void MakeRecParticles(void ) ;
111 void MakePID(void) ;
112
113 //Functions to calculate the PID probability
114 // Double_t ChargedHadronDistProb(Double_t x, Double_t y, Double_t * parg, Double_t * parl) ;
115 Double_t GausF (Double_t x, Double_t y, Double_t *par) ; //gaussian probability, parameter dependence a+b/(x*x)+c/x
116 Double_t GausPol2(Double_t x, Double_t y, Double_t *par) ; //gaussian probability, parameter dependence a+b*x+c*x*x
117 Double_t LandauF(Double_t x, Double_t y, Double_t *par) ; //gaussian probability, parameter dependence a+b/(x*x)+c/x
118 Double_t LandauPol2(Double_t x, Double_t y, Double_t *par) ; //gaussian probability, parameter dependence a+b*x+c*x*x
119 // Relative Distance CPV-EMC
120 Float_t GetDistance (AliPHOSEmcRecPoint * emc, AliPHOSCpvRecPoint * cpv, Option_t * axis)const ;
121 Int_t GetCPVBit (AliPHOSEmcRecPoint * emc, AliPHOSCpvRecPoint * cpv, Int_t EffPur, Float_t e) const;
122 Int_t GetPrincipalBit (TString particle, const Double_t* P, Int_t EffPur, Float_t e)const ; //Principal cut
123 Int_t GetHardPhotonBit(AliPHOSEmcRecPoint * emc) const;
124 Int_t GetHardPi0Bit (AliPHOSEmcRecPoint * emc) const;
125 TVector3 GetMomentumDirection(AliPHOSEmcRecPoint * emc, AliPHOSCpvRecPoint * cpv)const ;
126 void PrintRecParticles(Option_t * option) ;
127 virtual void WriteRecParticles() ;
128 void SetParameters() ; //Fills the matrix of parameters
129 void Unload();
130
131 //PID population
132 void SetInitPID(const Double_t * pid) ;
133 void GetInitPID(Double_t * pid) const ;
134
135private:
136 Bool_t fBayesian ; // Do PID bayesian
137 Bool_t fDefaultInit; //! kTRUE if the task was created by defaut ctor (only parameters are initialized)
138 Bool_t fWrite ; //! To write result to file
139 Int_t fNEvent ; //! current event number
140 TString fFileNamePrincipalPhoton ; // File name of the photon principals
141 TString fFileNamePrincipalPi0 ; // File name of the pi0 principals
142 TString fFileNameParameters ; // File name with PID parameters
143 TPrincipal *fPrincipalPhoton ; //! TPrincipal from photon pca file
144 TPrincipal *fPrincipalPi0 ; //! TPrincipal from pi0 pca file
145 Double_t *fX ; //! Shower shape for the principal data
146 Double_t *fPPhoton ; //! Principal photon eigenvalues
147 Double_t *fPPi0 ; //! Principal pi0 eigenvalues
148 Int_t fRecParticlesInRun ; //! Total number of recparticles in one run
149 TMatrixF *fParameters; //! Matrix of identification Parameters
150
151 //Initial pid population
152 Double_t fInitPID[AliPID::kSPECIESN] ; // Initial population to do bayesian PID
153 // pid probability function parameters
154 // ToF
155 Double_t fTphoton[3] ; // gaussian tof response for photon
156 TFormula * fTFphoton ; // the formula
157 Double_t fTpiong[3] ; // gaussian tof response for pions
158 TFormula * fTFpiong ; // the formula
159 Double_t fTkaong[3] ; // landau tof response for kaons
160 TFormula * fTFkaong ; // the formula
161 Double_t fTkaonl[3] ; // landau tof response for kaons
162 TFormula * fTFkaonl ; // the formula
163 Double_t fThhadrong[3] ; // gaus tof response for heavy hadrons
164 TFormula * fTFhhadrong ; // the formula
165 Double_t fThhadronl[3] ; // landau tof response for heavy hadrons
166 TFormula * fTFhhadronl ; // the formula
167
168 //Shower dispersion
169 Double_t fDmuon[3] ; // gaussian ss response for muon
170 TFormula * fDFmuon ; // the formula
171 Double_t fDphoton[10] ; // gaussian ss response for EM
172 Double_t fDpi0[10] ; // gaussian ss response for pi0
173 Double_t fDhadron[10] ; // gaussian ss response for hadrons
174
175 Double_t fXelectron[10] ; // gaussian emc-cpv distance response for electron
176 Double_t fXcharged[10] ; // landau emc-cpv distance response for charged part (no elect) */
177 Double_t fZelectron[10] ; // gaussian emc-cpv distance response for electron
178 Double_t fZcharged[10] ; // landau emc-cpv distance response for charged part (no elect) */
179
180
181 Double_t fERecWeightPar[4] ; // gaussian tof response for photon
182 TFormula * fERecWeight ; // the formula
183 Double_t fChargedNeutralThreshold ; //Threshold to differentiate between charged and neutral
184 Float_t fTOFEnThreshold; //Maximum energy to use TOF
185 Float_t fDispEnThreshold; //Minimum energy to use shower shape
186 Int_t fDispMultThreshold ; //Minimum multiplicity to use shower shape
187
188 ClassDef( AliPHOSPIDv1,12) // Particle identifier implementation version 1
189
190};
191
192#endif // AliPHOSPIDV1_H