1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
17 // Implements the abstract base class AliHFEpidBase
18 // IsInitialized() does the PID decision
21 // Markus Fasel <M.Fasel@gsi.de>
22 // Matus Kalisky <matus.kalisky@cern.ch> (contact)
27 #include "AliAODTrack.h"
28 #include "AliESDtrack.h"
30 #include "AliPIDResponse.h"
32 #include "AliHFEdetPIDqa.h"
33 #include "AliHFEpidTOF.h"
34 #include "AliHFEpidQAmanager.h"
37 ClassImp(AliHFEpidTOF)
39 //___________________________________________________________________
40 AliHFEpidTOF::AliHFEpidTOF():
43 , fUseOnlyIfAvailable(kFALSE)
44 , fRejectMismatch(kFALSE)
50 memset(fSigmaBordersTOFLower, 0, sizeof(Float_t) * 12);
51 memset(fSigmaBordersTOFUpper, 0, sizeof(Float_t) * 12);
54 //___________________________________________________________________
55 AliHFEpidTOF::AliHFEpidTOF(const Char_t *name):
58 , fUseOnlyIfAvailable(kFALSE)
59 , fRejectMismatch(kFALSE)
64 memset(fSigmaBordersTOFLower, 0, sizeof(Float_t) * 12);
65 memset(fSigmaBordersTOFUpper, 0, sizeof(Float_t) * 12);
69 //___________________________________________________________________
70 AliHFEpidTOF::AliHFEpidTOF(const AliHFEpidTOF &c):
73 , fUseOnlyIfAvailable(kFALSE)
74 , fRejectMismatch(kFALSE)
82 //___________________________________________________________________
83 AliHFEpidTOF &AliHFEpidTOF::operator=(const AliHFEpidTOF &ref){
85 // Assignment operator
94 //___________________________________________________________________
95 AliHFEpidTOF::~AliHFEpidTOF(){
100 //___________________________________________________________________
101 void AliHFEpidTOF::Copy(TObject &ref) const {
103 // Performs the copying of the object
105 AliHFEpidTOF &target = dynamic_cast<AliHFEpidTOF &>(ref);
107 target.fNsigmaTOF = fNsigmaTOF;
108 target.fUseOnlyIfAvailable = fUseOnlyIfAvailable;
109 target.fRejectMismatch = fRejectMismatch;
110 memcpy(target.fSigmaBordersTOFLower, fSigmaBordersTOFLower, sizeof(Float_t) * 12);
111 memcpy(target.fSigmaBordersTOFUpper, fSigmaBordersTOFUpper, sizeof(Float_t) * 12);
113 AliHFEpidBase::Copy(ref);
115 //___________________________________________________________________
116 Bool_t AliHFEpidTOF::InitializePID(Int_t /*run*/){
118 // InitializePID: TOF experts have to implement code here
123 //___________________________________________________________________
124 Int_t AliHFEpidTOF::IsSelected(const AliHFEpidObject *track, AliHFEpidQAmanager *pidqa) const
127 // TOF PID based on n-Sigma cut
128 // Selects Protons and Kaons via n-sigma cut up to 3 GeV/c
129 // In addition histos for n-sigma before (all species) and after (only closest species) are filled
131 if(!fkPIDResponse) return 0;
132 AliDebug(2, "PID object available");
134 const AliVTrack *vtrack = dynamic_cast<const AliVTrack *>(track->GetRecTrack());
135 if(!vtrack) return 0;
136 Bool_t hasTOFpid = vtrack->GetStatus() & AliESDtrack::kTOFpid;
137 if(fUseOnlyIfAvailable && !hasTOFpid){
138 AliDebug(2, "No TOF PID, but PID required only if available");
140 } else if(!hasTOFpid){
141 AliDebug(2, "No TOF PID, and TOF PID is required always");
144 AliDebug(2, "Track Has TOF PID");
147 if(IsMismatch(vtrack)) return 0;
150 if(pidqa) pidqa->ProcessTrack(track, AliHFEpid::kTOFpid, AliHFEdetPIDqa::kBeforePID);
152 // Fill before selection
153 Double_t sigEle = fkPIDResponse->NumberOfSigmasTOF(track->GetRecTrack(), AliPID::kElectron);
154 AliDebug(2, Form("Number of sigmas in TOF: %f", sigEle));
156 if(TestBit(kSigmaBand)){
157 Int_t centrality = track->IsPbPb() ? track->GetCentrality() + 1 : 0;
158 AliDebug(2, Form("Centrality: %d\n", centrality));
159 if(centrality > 11) return kFALSE;
160 if(sigEle > fSigmaBordersTOFLower[centrality] && sigEle < fSigmaBordersTOFUpper[centrality]) pdg = 11;
163 if(TMath::Abs(sigEle) < fNsigmaTOF) pdg = 11;
166 if(pdg == 11 && pidqa) pidqa->ProcessTrack(track, AliHFEpid::kTOFpid, AliHFEdetPIDqa::kAfterPID);
170 //___________________________________________________________________
171 void AliHFEpidTOF::SetTOFnSigmaBand(Float_t lower, Float_t upper)
174 // Lower and higher cut independant of the centrality
177 for(Int_t k=0; k < 12; k++) {
178 fSigmaBordersTOFLower[k] = lower;
179 fSigmaBordersTOFUpper[k] = upper;
182 SetBit(kSigmaBand, kTRUE);
185 //___________________________________________________________________
186 void AliHFEpidTOF::SetTOFnSigmaBandCentrality(Float_t lower, Float_t upper, Int_t centralityBin)
189 // Lower and higher cut as function of centrality
192 if(centralityBin < 11) {
193 fSigmaBordersTOFLower[centralityBin+1] = lower;
194 fSigmaBordersTOFUpper[centralityBin+1] = upper;
197 SetBit(kSigmaBand, kTRUE);
201 //___________________________________________________________________
202 Bool_t AliHFEpidTOF::IsMismatch(const AliVTrack * const track) const {
204 // Check for mismatch
206 if(!fkPIDResponse) return kFALSE;
207 Double_t probs[AliPID::kSPECIESC];
208 AliPIDResponse::EDetPidStatus status = fkPIDResponse->ComputeTOFProbability(track, AliPID::kSPECIESC, probs);
209 return status == AliPIDResponse::kDetMismatch;