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[u/mrichter/AliRoot.git] / STEER / STEERBase / AliPIDResponse.h
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29bf19f2 1#ifndef ALIPIDRESPONSE_H
2#define ALIPIDRESPONSE_H
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6//---------------------------------------------------------------//
7// Base class for handling the pid response //
8// functions of all detectors //
9// and give access to the nsigmas //
10// //
11// Origin: Jens Wiechula, Uni Tuebingen, jens.wiechula@cern.ch //
12//---------------------------------------------------------------//
13
14#include "AliITSPIDResponse.h"
15#include "AliTPCPIDResponse.h"
16#include "AliTRDPIDResponse.h"
17#include "AliTOFPIDResponse.h"
e96b9916 18#include "AliEMCALPIDResponse.h"
29bf19f2 19
20#include "AliVParticle.h"
21#include "AliVTrack.h"
22
23#include "TNamed.h"
24
25class AliVEvent;
4ec8e76d 26class TF1;
29bf19f2 27
28class AliPIDResponse : public TNamed {
29public:
4ec8e76d 30 AliPIDResponse(Bool_t isMC=kFALSE);
31 virtual ~AliPIDResponse();
29bf19f2 32
fd21ec8d 33 enum EDetCode {
34 kDetITS = 0x1,
35 kDetTPC = 0x2,
36 kDetTRD = 0x4,
37 kDetTOF = 0x8,
38 kDetHMPID = 0x10,
39 kDetEMCAL = 0x20,
40 kDetPHOS = 0x40
41 };
42
29bf19f2 43 enum EStartTimeType_t {kFILL_T0,kTOF_T0, kT0_T0, kBest_T0};
fd21ec8d 44
45 enum ITSPIDmethod { kITSTruncMean, kITSLikelihood };
46
47 enum EDetPidStatus {
48 kDetNoSignal=0,
49 kDetPidOk=1,
50 kDetMismatch=2
51 };
29bf19f2 52
53 AliITSPIDResponse &GetITSResponse() {return fITSResponse;}
54 AliTPCPIDResponse &GetTPCResponse() {return fTPCResponse;}
55 AliTOFPIDResponse &GetTOFResponse() {return fTOFResponse;}
56 AliTRDPIDResponse &GetTRDResponse() {return fTRDResponse;}
e96b9916 57 AliEMCALPIDResponse &GetEMCALResponse() {return fEMCALResponse;}
fd21ec8d 58
59 Float_t NumberOfSigmas(EDetCode detCode, const AliVParticle *track, AliPID::EParticleType type) const;
29bf19f2 60
61 virtual Float_t NumberOfSigmasITS(const AliVParticle *track, AliPID::EParticleType type) const;
62 virtual Float_t NumberOfSigmasTPC(const AliVParticle *track, AliPID::EParticleType type) const;
e96b9916 63 virtual Float_t NumberOfSigmasEMCAL(const AliVTrack *track, AliPID::EParticleType type) const;
6d0064aa 64 virtual Float_t NumberOfSigmasEMCAL(const AliVTrack *track, AliPID::EParticleType type, Double_t &eop, Double_t showershape[4]) const;
29bf19f2 65 virtual Float_t NumberOfSigmasTOF(const AliVParticle *track, AliPID::EParticleType type) const = 0;
ea235c90 66 virtual Bool_t IdentifiedAsElectronTRD(const AliVTrack *track, Double_t efficiencyLevel) const;
29bf19f2 67
fd21ec8d 68 EDetPidStatus ComputePIDProbability (EDetCode detCode, const AliVTrack *track, Int_t nSpecies, Double_t p[]) const;
69
70 EDetPidStatus ComputeITSProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const;
71 EDetPidStatus ComputeTPCProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const;
72 EDetPidStatus ComputeTOFProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const;
73 EDetPidStatus ComputeTRDProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const;
74 EDetPidStatus ComputeEMCALProbability(const AliVTrack *track, Int_t nSpecies, Double_t p[]) const;
75 EDetPidStatus ComputePHOSProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const;
76 EDetPidStatus ComputeHMPIDProbability(const AliVTrack *track, Int_t nSpecies, Double_t p[]) const;
77
78
79 void SetITSPIDmethod(ITSPIDmethod pmeth) { fITSPIDmethod = pmeth; }
ea235c90 80 void SetTRDslicesForPID(UInt_t slice1, UInt_t slice2) {fTRDslicesForPID[0]=slice1;fTRDslicesForPID[1]=slice2;}
81
4ec8e76d 82 void SetOADBPath(const char* path) {fOADBPath=path;}
80f28562 83 const char *GetOADBPath() const {return fOADBPath.Data();}
4ec8e76d 84 void InitialiseEvent(AliVEvent *event, Int_t pass);
ea235c90 85 void SetCurrentFile(const char* file) { fCurrentFile=file; }
4ec8e76d 86
e96b9916 87 AliVEvent * GetCurrentEvent() const {return fCurrentEvent;}
88
fd21ec8d 89 // User settings for the MC period and reco pass
90 void SetMCperiod(const char *mcPeriod) {fMCperiodUser=mcPeriod;}
91 void SetRecoPass(Int_t recoPass) {fRecoPassUser=recoPass;}
80f28562 92
93 // event info
94 Float_t GetCurrentCentrality() const {return fCurrCentrality;};
95
0b39f221 96 // TOF setting
97 void SetTOFtail(Float_t tail=1.1){if(tail > 0) fTOFtail=tail; else printf("TOF tail should be greater than 0 (nothing done)\n");};
5f8db5fe 98 void SetTOFResponse(AliVEvent *vevent,EStartTimeType_t option);
0b39f221 99
4ec8e76d 100 AliPIDResponse(const AliPIDResponse &other);
101 AliPIDResponse& operator=(const AliPIDResponse &other);
80f28562 102
29bf19f2 103
104protected:
105 AliITSPIDResponse fITSResponse; //PID response function of the ITS
106 AliTPCPIDResponse fTPCResponse; //PID response function of the TPC
107 AliTRDPIDResponse fTRDResponse; //PID response function of the TRD
108 AliTOFPIDResponse fTOFResponse; //PID response function of the TOF
e96b9916 109 AliEMCALPIDResponse fEMCALResponse; //PID response function of the EMCAL
4ec8e76d 110
fd21ec8d 111 Float_t fRange; // nSigma max in likelihood
112 ITSPIDmethod fITSPIDmethod; // 0 = trunc mean; 1 = likelihood
113
4ec8e76d 114private:
115 Bool_t fIsMC; // If we run on MC data
116
117 TString fOADBPath; // OADB path to use
118
119 TString fBeamType; //! beam type (PP) or (PBPB)
120 TString fLHCperiod; //! LHC period
121 TString fMCperiodTPC; //! corresponding MC period to use for the TPC splines
fd21ec8d 122 TString fMCperiodUser; // MC prodution requested by the user
ea235c90 123 TString fCurrentFile; //! name of currently processed file
4ec8e76d 124 Int_t fRecoPass; //! reconstruction pass
fd21ec8d 125 Int_t fRecoPassUser; // reconstruction pass explicitly set by the user
4ec8e76d 126 Int_t fRun; //! current run number
127 Int_t fOldRun; //! current run number
fd21ec8d 128
4ec8e76d 129 TObjArray *fArrPidResponseMaster; //! TPC pid splines
130 TF1 *fResolutionCorrection; //! TPC resolution correction
131
ce487a7f 132 AliTRDPIDParams *fTRDPIDParams; //! TRD PID Params
ea235c90 133 AliTRDPIDReference *fTRDPIDReference; //! TRD PID References
134 UInt_t fTRDslicesForPID[2]; //! TRD PID slices
135
4ec8e76d 136 Int_t fTOFTimeZeroType; //! default start time type for tof (ESD)
137 Float_t fTOFres; //! TOF resolution
0b39f221 138 Float_t fTOFtail; //! TOF tail effect used in TOF probability
e96b9916 139
b2138b40 140 TObjArray *fEMCALPIDParams; //! EMCAL PID Params
141
e96b9916 142 AliVEvent *fCurrentEvent; //! event currently being processed
80f28562 143
144 Float_t fCurrCentrality; //! current centrality
4ec8e76d 145
146 void ExecNewRun();
147
148 //
149 //setup parametrisations
150 //
151
152 //ITS
153 void SetITSParametrisation();
154
155 //TPC
156 void SetTPCPidResponseMaster();
157 void SetTPCParametrisation();
158 Double_t GetTPCMultiplicityBin(const AliVEvent * const event);
159
ea235c90 160 //TRD
161 void SetTRDPidResponseMaster();
162 void InitializeTRDResponse();
163
4ec8e76d 164 //TOF
b2138b40 165
166 //EMCAL
167 void SetEMCALPidResponseMaster();
168 void InitializeEMCALResponse();
169
4ec8e76d 170 //
171 void SetRecoInfo();
29bf19f2 172
0b39f221 173 ClassDef(AliPIDResponse,5); //PID response handling
29bf19f2 174};
175
176inline Float_t AliPIDResponse::NumberOfSigmasTPC(const AliVParticle *vtrack, AliPID::EParticleType type) const {
177 AliVTrack *track=(AliVTrack*)vtrack;
178 Double_t mom = track->GetTPCmomentum();
179 Double_t sig = track->GetTPCsignal();
180 UInt_t sigN = track->GetTPCsignalN();
181
182 Double_t nSigma = -999.;
183 if (sigN>0) nSigma=fTPCResponse.GetNumberOfSigmas(mom,sig,sigN,type);
184
185 return nSigma;
186}
187
188inline Float_t AliPIDResponse::NumberOfSigmasITS(const AliVParticle *vtrack, AliPID::EParticleType type) const {
189 AliVTrack *track=(AliVTrack*)vtrack;
190 Float_t dEdx=track->GetITSsignal();
191 if (dEdx<=0) return -999.;
192
193 UChar_t clumap=track->GetITSClusterMap();
194 Int_t nPointsForPid=0;
195 for(Int_t i=2; i<6; i++){
196 if(clumap&(1<<i)) ++nPointsForPid;
197 }
198 Float_t mom=track->P();
199 Bool_t isSA=kTRUE;
200 if(track->GetTPCNcls()>0) isSA=kFALSE;
201 return fITSResponse.GetNumberOfSigmas(mom,dEdx,type,nPointsForPid,isSA);
202}
203
204#endif