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1 | #ifndef ALIESDPID_H | |
2 | #define ALIESDPID_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 | //------------------------------------------------------- | |
9 | // Combined PID class | |
10 | // for the Event Summary Data class | |
11 | // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch | |
12 | //------------------------------------------------------- | |
13 | #include <Rtypes.h> | |
14 | #include "AliESDtrack.h" // Needed for inline functions | |
15 | #include "AliTPCPIDResponse.h" | |
16 | #include "AliITSPIDResponse.h" | |
17 | #include "AliTOFPIDResponse.h" | |
18 | #include "AliTRDPIDResponse.h" | |
19 | //#include "HMPID/AliHMPID.h" | |
20 | //#include "TRD/AliTRDpidESD.h" | |
21 | ||
22 | class AliESDEvent; | |
23 | ||
24 | class AliESDpid { | |
25 | public: | |
26 | AliESDpid(): fRange(5.), fITSPIDmethod(kITSTruncMean), fTPCResponse(), fITSResponse(), fTOFResponse(), fTRDResponse(){;} | |
27 | virtual ~AliESDpid() {} | |
28 | Int_t MakePID(AliESDEvent *event, Bool_t TPCOnly = kFALSE, Float_t timeZeroTOF=9999) const; | |
29 | void MakeTPCPID(AliESDtrack *track) const; | |
30 | void MakeITSPID(AliESDtrack *track) const; | |
31 | void MakeTOFPID(AliESDtrack *track, Float_t /*timeZeroTOF*/) const; | |
32 | Bool_t CheckTOFMatching(AliESDtrack *track) const; | |
33 | // void MakeHMPIDPID(AliESDtrack *track); | |
34 | void MakeTRDPID(AliESDtrack *track) const; | |
35 | void CombinePID(AliESDtrack *track) const; | |
36 | ||
37 | enum ITSPIDmethod { kITSTruncMean, kITSLikelihood }; | |
38 | void SetITSPIDmethod(ITSPIDmethod pmeth) { fITSPIDmethod = pmeth; } | |
39 | ||
40 | Float_t NumberOfSigmasTPC(const AliESDtrack *track, AliPID::EParticleType type) const; | |
41 | Float_t NumberOfSigmasTOF(const AliESDtrack *track, AliPID::EParticleType type, const Float_t timeZeroTOF) const; | |
42 | Float_t NumberOfSigmasITS(const AliESDtrack *track, AliPID::EParticleType type) const; | |
43 | ||
44 | AliITSPIDResponse &GetITSResponse() {return fITSResponse;} | |
45 | AliTPCPIDResponse &GetTPCResponse() {return fTPCResponse;} | |
46 | AliTOFPIDResponse &GetTOFResponse() {return fTOFResponse;} | |
47 | AliTRDPIDResponse &GetTRDResponse() {return fTRDResponse;} | |
48 | ||
49 | enum EStartTimeType_t {kFILL_T0,kTOF_T0, kT0_T0, kBest_T0}; | |
50 | void SetTOFResponse(AliESDEvent *event,EStartTimeType_t option); | |
51 | ||
52 | private: | |
53 | Float_t fRange; // nSigma max in likelihood | |
54 | ITSPIDmethod fITSPIDmethod; // 0 = trunc mean; 1 = likelihood | |
55 | AliTPCPIDResponse fTPCResponse; | |
56 | AliITSPIDResponse fITSResponse; | |
57 | AliTOFPIDResponse fTOFResponse; | |
58 | // AliHMPIDPIDResponse fHMPIDResponse; | |
59 | AliTRDPIDResponse fTRDResponse; | |
60 | ||
61 | ClassDef(AliESDpid,4) // PID calculation class | |
62 | }; | |
63 | ||
64 | inline Float_t AliESDpid::NumberOfSigmasTPC(const AliESDtrack *track, AliPID::EParticleType type) const { | |
65 | Double_t mom = track->GetP(); | |
66 | const AliExternalTrackParam *in = track->GetInnerParam(); | |
67 | if (in) | |
68 | mom = in->GetP(); | |
69 | return fTPCResponse.GetNumberOfSigmas(mom,track->GetTPCsignal(),track->GetTPCsignalN(),type); | |
70 | } | |
71 | ||
72 | inline Float_t AliESDpid::NumberOfSigmasTOF(const AliESDtrack *track, AliPID::EParticleType type, const Float_t timeZeroTOF) const { | |
73 | Double_t times[AliPID::kSPECIES]; | |
74 | track->GetIntegratedTimes(times); | |
75 | return (track->GetTOFsignal() - timeZeroTOF - times[type])/fTOFResponse.GetExpectedSigma(track->GetP(),times[type],AliPID::ParticleMass(type)); | |
76 | } | |
77 | ||
78 | inline Float_t AliESDpid::NumberOfSigmasITS(const AliESDtrack *track, AliPID::EParticleType type) const { | |
79 | ULong_t trStatus=track->GetStatus(); | |
80 | Float_t dEdx=track->GetITSsignal(); | |
81 | UChar_t clumap=track->GetITSClusterMap(); | |
82 | Int_t nPointsForPid=0; | |
83 | for(Int_t i=2; i<6; i++){ | |
84 | if(clumap&(1<<i)) ++nPointsForPid; | |
85 | } | |
86 | Float_t mom=track->P(); | |
87 | Bool_t isSA=kTRUE; | |
88 | if(trStatus&AliESDtrack::kTPCin) isSA=kFALSE; | |
89 | return fITSResponse.GetNumberOfSigmas(mom,dEdx,type,nPointsForPid,isSA); | |
90 | } | |
91 | #endif | |
92 | ||
93 |