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71b7d225 | 1 | #define AliAnalysisTaskMuonAODfromGeneral_cxx |
2 | ||
3 | // 19 Nov 2007 | |
aba89748 | 4 | // Class implementation for the specific muon AOD generation |
5 | // Extracts only muon tracks from a general AOD and builds dimuons | |
6 | // Livio Bianchi, Universita' di Torino | |
7 | ||
71b7d225 | 8 | |
9 | #include "TTree.h" | |
10 | #include "TROOT.h" | |
11 | #include "TH1.h" | |
12 | #include "TCanvas.h" | |
13 | #include "TSystem.h" | |
14 | #include "TRandom.h" | |
15 | ||
16 | #include "AliAODEvent.h" | |
aba89748 | 17 | #include "AliAnalysisTask.h" |
71b7d225 | 18 | #include "AliAnalysisTaskMuonAODfromGeneral.h" |
19 | #include "AliAODHandler.h" | |
20 | #include "AliAnalysisManager.h" | |
21 | #include "AliAODEventInfo.h" | |
22 | #include "AliAODDimuon.h" | |
23 | ||
24 | ClassImp(AliAnalysisTaskMuonAODfromGeneral) | |
25 | ||
26 | //________________________________________________________________________ | |
27 | AliAnalysisTaskMuonAODfromGeneral::AliAnalysisTaskMuonAODfromGeneral(const char *name, Double_t BeamEnergy): | |
28 | AliAnalysisTask(name, "AnalysisTaskMuonAODfromGeneral"), | |
29 | fInfos(0), | |
30 | fDimuons(0), | |
8b8b0b7a | 31 | fChain(0), |
32 | fOrgAOD(0), | |
71b7d225 | 33 | fNewAOD(0), |
34 | ft(0), | |
35 | fBeamEnergy(0) | |
36 | { // Constructor. | |
37 | // Input slot #0 works with an Ntuple | |
38 | SetBeamEnergy(BeamEnergy); | |
39 | DefineInput(0, TChain::Class()); | |
40 | // Output slot #0 writes into a TTree container | |
41 | DefineOutput(0, TTree::Class()); | |
42 | } | |
43 | ||
44 | //________________________________________________________________________ | |
45 | void AliAnalysisTaskMuonAODfromGeneral::ConnectInputData(Option_t *) { | |
46 | printf(" ConnectInputData %s\n", GetName()); | |
47 | // New connection to the AOD | |
48 | fChain = (TChain*)GetInputData(0); | |
49 | fOrgAOD = new AliAODEvent(); | |
50 | fOrgAOD->ReadFromTree(fChain); // This checks also if the branch address is already set | |
51 | } | |
52 | ||
53 | //________________________________________________________________________ | |
54 | void AliAnalysisTaskMuonAODfromGeneral::CreateOutputObjects() { | |
55 | printf("Creating output objects\n"); | |
56 | if(!fNewAOD)fNewAOD=new AliAODEvent(); | |
57 | fNewAOD->CreateStdContent(); | |
58 | ||
59 | if (!ft) { | |
60 | ft = new TTree("AOD","Muon AOD tree",0); | |
61 | ft->BranchRef(); | |
62 | ft->Branch(fNewAOD->GetList()); | |
63 | //ft->Print(); | |
64 | } | |
65 | ||
66 | //Add new Objects: MuonInfos & Dimuons | |
67 | fInfos = new AliAODEventInfo(); | |
68 | fNewAOD->AddObject(fInfos); | |
69 | const char *nameInfos = "MuonInfos"; | |
70 | fInfos->SetName(nameInfos); | |
71 | ft->Branch(nameInfos, &fInfos); | |
72 | fDimuons = new TClonesArray("AliAODDimuon",0); | |
73 | fNewAOD->AddObject(fDimuons); | |
74 | const char *nameDimuons = "Dimuons"; | |
75 | fDimuons->SetName(nameDimuons); | |
76 | ft->Branch(nameDimuons, &fDimuons); | |
77 | ||
78 | } | |
79 | ||
80 | //________________________________________________________________________ | |
81 | void AliAnalysisTaskMuonAODfromGeneral::Exec(Option_t *) { | |
82 | static int ncall=0; | |
83 | // Task making a Muon AOD | |
84 | // Get input data | |
85 | TChain *chain = (TChain*)GetInputData(0); | |
86 | Long64_t ientry = chain->GetReadEntry(); | |
87 | ientry=ientry; | |
88 | ||
89 | if (!fOrgAOD) return; | |
90 | ||
91 | Int_t nTracks=fOrgAOD->GetNumberOfTracks(); | |
92 | Int_t nMuTracks=0; | |
93 | Int_t nPosTracks = 0; | |
a6e0ebfe | 94 | Int_t mutrNumb[10]; for (Int_t i=0; i<10; mutrNumb[i++]=0) {} |
71b7d225 | 95 | for (Int_t iTrack=0; iTrack<nTracks; iTrack++){ |
96 | const Double_t *trackpid=fOrgAOD->GetTrack(iTrack)->PID(); | |
97 | if (trackpid[AliAODTrack::kMuon]==1.) { | |
98 | mutrNumb[nMuTracks]=iTrack; | |
99 | nMuTracks++; | |
100 | } | |
101 | if (fOrgAOD->GetTrack(iTrack)->Charge()> 0) nPosTracks++; | |
102 | } | |
103 | ||
104 | Bool_t ExistMuon=kFALSE; | |
105 | if (nMuTracks>0) ExistMuon=kTRUE; | |
106 | ||
107 | //-------------------------------------------------------------------- | |
108 | // set arrays and pointers | |
109 | Double_t pos[3]; | |
110 | Double_t covVtx[6]; | |
111 | ||
112 | // Access to the header | |
113 | AliAODHeader *header = fNewAOD->GetHeader(); | |
114 | ||
115 | // fill the header | |
116 | header->SetRunNumber (fOrgAOD->GetRunNumber() ); | |
117 | header->SetBunchCrossNumber(fOrgAOD->GetBunchCrossNumber()); | |
118 | header->SetOrbitNumber (fOrgAOD->GetOrbitNumber() ); | |
119 | header->SetPeriodNumber (fOrgAOD->GetPeriodNumber() ); | |
120 | header->SetTriggerMask (fOrgAOD->GetTriggerMask() ); | |
121 | header->SetTriggerCluster (fOrgAOD->GetTriggerCluster() ); | |
122 | header->SetEventType (fOrgAOD->GetEventType() ); | |
123 | header->SetMagneticField (fOrgAOD->GetMagneticField() ); | |
124 | header->SetZDCN1Energy (fOrgAOD->GetZDCN1Energy() ); | |
125 | header->SetZDCP1Energy (fOrgAOD->GetZDCP1Energy() ); | |
126 | header->SetZDCN2Energy (fOrgAOD->GetZDCN2Energy() ); | |
127 | header->SetZDCP2Energy (fOrgAOD->GetZDCP2Energy() ); | |
128 | header->SetZDCEMEnergy (0,fOrgAOD->GetZDCEMEnergy(0) ); | |
129 | header->SetZDCEMEnergy (1,fOrgAOD->GetZDCEMEnergy(1) ); | |
130 | header->SetRefMultiplicity (nTracks); | |
131 | header->SetRefMultiplicityPos(nPosTracks); | |
132 | header->SetRefMultiplicityNeg(nTracks - nPosTracks); | |
133 | header->SetMuonMagFieldScale(-999.); // FIXME | |
134 | header->SetCentrality(-999.); // FIXME | |
135 | ||
136 | Int_t nVertices = 0; | |
137 | const AliAODVertex *vtx = fOrgAOD->GetPrimaryVertex(); | |
138 | if(vtx)nVertices = 1; | |
139 | ||
140 | Int_t nDimuons=nMuTracks*(nMuTracks-1)/2; | |
141 | ||
142 | // Access to the AOD container of vertices | |
143 | TClonesArray &vertices = *(fNewAOD->GetVertices()); | |
144 | Int_t jVertices=0; | |
145 | ||
146 | // Access to the AOD container of tracks | |
147 | TClonesArray &tracks = *(fNewAOD->GetTracks()); | |
148 | tracks.Delete(); | |
149 | Int_t jTracks=0; | |
150 | ||
151 | ||
152 | vtx->GetCovMatrix(covVtx); //covariance matrix | |
153 | ||
154 | AliAODVertex * primary = new(vertices[jVertices++]) | |
155 | AliAODVertex(pos, covVtx, vtx->GetChi2perNDF(), NULL, AliAODVertex::kPrimary); | |
156 | ||
157 | static int ncal=0; | |
158 | static int numtracks=0; | |
159 | for (Int_t iTrack=0; iTrack<nMuTracks; iTrack++) { | |
160 | AliAODTrack *aodTrack; | |
161 | primary->AddDaughter( aodTrack=new(tracks[jTracks++]) | |
162 | AliAODTrack((*(fOrgAOD->GetTrack(mutrNumb[iTrack]))))); | |
163 | ncal++; | |
164 | } | |
165 | numtracks+=jTracks; | |
166 | ||
167 | fDimuons->Delete(); | |
168 | fDimuons->Expand(nDimuons); | |
169 | TClonesArray &rDimuons = *fDimuons; | |
170 | ||
171 | Int_t jDimuons=0; | |
172 | for(Int_t i=0; i<nMuTracks; i++){ | |
173 | for(Int_t j=i+1; j<nMuTracks; j++){ | |
174 | new(rDimuons[jDimuons++]) AliAODDimuon(tracks[i],tracks[j],fInfos); | |
175 | } | |
176 | } | |
177 | ||
178 | fInfos->SetBeamEnergy(fBeamEnergy); | |
aba89748 | 179 | fInfos->SetEv(fNewAOD); |
180 | fInfos->SetEi(fInfos); | |
181 | fInfos->SetHe(header); | |
182 | fInfos->SetTr(fNewAOD->GetTracks()); | |
183 | fInfos->SetDi(fDimuons); | |
184 | fInfos->SelectTriggerBits(0,1,2,3,4,5); | |
71b7d225 | 185 | if(ExistMuon) ft->Fill(); |
186 | ncall++; | |
187 | ||
188 | // Post final data. It will be written to a file with option "RECREATE" | |
189 | PostData(0, ft); | |
190 | } | |
191 | ||
192 | //________________________________________________________________________ | |
193 | void AliAnalysisTaskMuonAODfromGeneral::Terminate(Option_t *) { | |
194 | // Draw some histogram at the end. | |
195 | ft->GetUserInfo()->Add(fNewAOD); | |
196 | ft->Write("",TObject::kOverwrite); | |
197 | ft->ResetBranchAddresses(); | |
198 | if (!gROOT->IsBatch()) { | |
199 | TCanvas *c1 = new TCanvas("c1","Pt",10,10,310,310); | |
200 | c1->SetFillColor(10); | |
201 | c1->SetHighLightColor(10); | |
202 | ||
203 | c1->cd(1)->SetLeftMargin(0.15); | |
204 | c1->cd(1)->SetBottomMargin(0.15); | |
205 | c1->cd(1)->SetLogy(); | |
206 | ft->Draw("tracks.Pt()"); | |
207 | //ft->Draw("dimuons.M()"); | |
208 | } | |
209 | } |