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Commit | Line | Data |
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8628b70c | 1 | // $Id$ |
6deabc32 | 2 | // |
3 | // Jet embedding task. | |
4 | // | |
5 | // Author: S.Aiola, C.Loizides | |
6 | ||
7 | #include "AliJetEmbeddingFromGenTask.h" | |
8 | ||
9 | #include <TClonesArray.h> | |
bd2cf60a | 10 | #include <TFolder.h> |
6deabc32 | 11 | #include <TLorentzVector.h> |
bd2cf60a | 12 | #include <TParticle.h> |
13 | #include <TParticlePDG.h> | |
6deabc32 | 14 | #include <TRandom3.h> |
e6f3b167 | 15 | #include <TProfile.h> |
6deabc32 | 16 | #include "AliAnalysisManager.h" |
17 | #include "AliEMCALDigit.h" | |
18 | #include "AliEMCALGeometry.h" | |
19 | #include "AliEMCALRecPoint.h" | |
20 | #include "AliGenerator.h" | |
bd2cf60a | 21 | #include "AliHeader.h" |
6deabc32 | 22 | #include "AliLog.h" |
23 | #include "AliPicoTrack.h" | |
bd2cf60a | 24 | #include "AliRun.h" |
25 | #include "AliRunLoader.h" | |
26 | #include "AliStack.h" | |
6deabc32 | 27 | #include "AliStack.h" |
28 | #include "AliVCluster.h" | |
29 | #include "AliVEvent.h" | |
e6f3b167 | 30 | #include "AliGenPythiaEventHeader.h" |
cfa7b4df | 31 | #include "AliStackPartonInfo.h" |
6deabc32 | 32 | |
33 | ClassImp(AliJetEmbeddingFromGenTask) | |
34 | ||
35 | //________________________________________________________________________ | |
36 | AliJetEmbeddingFromGenTask::AliJetEmbeddingFromGenTask() : | |
37 | AliJetModelBaseTask("AliJetEmbeddingFromGenTask"), | |
e6f3b167 | 38 | fGen(0), |
4d3b366f | 39 | fMassless(kFALSE), |
72978588 | 40 | fChargedOnly(kFALSE), |
8d2d2145 | 41 | fHistPt(0), |
72978588 | 42 | fHistEtaPhi(0), |
e6f3b167 | 43 | fHistTrials(0), |
44 | fHistXsection(0), | |
45 | fHistPtHard(0) | |
6deabc32 | 46 | { |
47 | // Default constructor. | |
48 | SetSuffix("EmbeddedFromGen"); | |
49 | } | |
50 | ||
51 | //________________________________________________________________________ | |
e6f3b167 | 52 | AliJetEmbeddingFromGenTask::AliJetEmbeddingFromGenTask(const char *name, Bool_t drawqa) : |
53 | AliJetModelBaseTask(name,drawqa), | |
54 | fGen(0), | |
4d3b366f | 55 | fMassless(kFALSE), |
72978588 | 56 | fChargedOnly(kFALSE), |
8d2d2145 | 57 | fHistPt(0), |
72978588 | 58 | fHistEtaPhi(0), |
e6f3b167 | 59 | fHistTrials(0), |
60 | fHistXsection(0), | |
61 | fHistPtHard(0) | |
6deabc32 | 62 | { |
63 | // Standard constructor. | |
64 | SetSuffix("EmbeddedFromGen"); | |
65 | } | |
66 | ||
67 | //________________________________________________________________________ | |
68 | AliJetEmbeddingFromGenTask::~AliJetEmbeddingFromGenTask() | |
69 | { | |
70 | // Destructor | |
71 | } | |
72 | ||
e6f3b167 | 73 | //________________________________________________________________________ |
74 | void AliJetEmbeddingFromGenTask::UserCreateOutputObjects() | |
75 | { | |
76 | // Create user output. | |
77 | ||
78 | if (!fQAhistos) | |
79 | return; | |
80 | ||
81 | AliJetModelBaseTask::UserCreateOutputObjects(); | |
82 | ||
8d2d2145 | 83 | fHistPt = new TH1F("fHistpt","fHistPt;#it{p}_{T};N",100,0.,100.); |
84 | fOutput->Add(fHistPt); | |
85 | ||
cfa7b4df | 86 | fHistEtaPhi = new TH2F("fHistEtapHI","fHistEtaPhi;#eta;#varphi",100,-3.,3.,100.,0.,TMath::TwoPi()); |
72978588 | 87 | fOutput->Add(fHistEtaPhi); |
88 | ||
e6f3b167 | 89 | fHistTrials = new TH1F("fHistTrials", "fHistTrials", 1, 0, 1); |
90 | fHistTrials->GetYaxis()->SetTitle("trials"); | |
91 | fOutput->Add(fHistTrials); | |
92 | ||
93 | fHistXsection = new TProfile("fHistXsection", "fHistXsection", 1, 0, 1); | |
94 | fHistXsection->GetYaxis()->SetTitle("xsection"); | |
95 | fOutput->Add(fHistXsection); | |
96 | ||
97 | fHistPtHard = new TH1F("fHistPtHard", "fHistPtHard", 500, 0., 500.); | |
98 | fHistPtHard->GetXaxis()->SetTitle("p_{T,hard} (GeV/c)"); | |
99 | fHistPtHard->GetYaxis()->SetTitle("counts"); | |
100 | fOutput->Add(fHistPtHard); | |
101 | ||
102 | PostData(1, fOutput); | |
103 | } | |
104 | ||
6deabc32 | 105 | //________________________________________________________________________ |
d63c8c07 | 106 | Bool_t AliJetEmbeddingFromGenTask::ExecOnce() |
6deabc32 | 107 | { |
bd2cf60a | 108 | // Exec only once. |
6deabc32 | 109 | |
bd2cf60a | 110 | if (!gAlice) { |
111 | new AliRun("gAlice","The ALICE Off-line Simulation Framework"); | |
112 | delete gRandom; | |
113 | gRandom = new TRandom3(0); | |
114 | } | |
115 | ||
116 | TFolder *folder = new TFolder(GetName(),GetName()); | |
117 | AliRunLoader *rl = new AliRunLoader(folder); | |
118 | rl->MakeHeader(); | |
119 | rl->MakeStack(); | |
120 | AliStack *stack = rl->Stack(); | |
121 | fGen->SetStack(stack); | |
122 | fGen->Init(); | |
123 | ||
806ada48 | 124 | if (!(InputEvent()->FindListObject(fTracksName))) { |
bd2cf60a | 125 | fOutTracks = new TClonesArray("AliPicoTrack", 1000); |
126 | fOutTracks->SetName(fTracksName); | |
884c6dab | 127 | InputEvent()->AddObject(fOutTracks); |
bd2cf60a | 128 | fNTracks = 0; |
6deabc32 | 129 | } |
cfa7b4df | 130 | |
131 | if (!(InputEvent()->FindListObject(fPartonInfoName))) { | |
132 | fStackPartonInfo = new AliStackPartonInfo("PartonsInfo"); | |
133 | fStackPartonInfo->SetName(fPartonInfoName); | |
134 | InputEvent()->AddObject(fStackPartonInfo); | |
135 | } | |
d63c8c07 | 136 | return kTRUE; |
6deabc32 | 137 | } |
138 | ||
139 | //________________________________________________________________________ | |
140 | void AliJetEmbeddingFromGenTask::Run() | |
141 | { | |
142 | // Embed particles. | |
143 | ||
bd2cf60a | 144 | if (fCopyArray) |
145 | CopyTracks(); | |
6deabc32 | 146 | |
147 | AliStack *stack = fGen->GetStack(); | |
bd2cf60a | 148 | stack->Reset(); |
149 | fGen->Generate(); | |
6deabc32 | 150 | const Int_t nprim = stack->GetNprimary(); |
cfa7b4df | 151 | TParticle *part6 = stack->Particle(6); |
152 | TParticle *part7 = stack->Particle(7); | |
153 | ||
154 | fStackPartonInfo->SetPartonFlag6(TMath::Abs(part6->GetPdgCode())); | |
155 | fStackPartonInfo->SetPartonPt6(part6->Pt()); | |
156 | fStackPartonInfo->SetPartonEta6(part6->Eta()); | |
157 | fStackPartonInfo->SetPartonPhi6(part6->Phi()); | |
158 | ||
159 | fStackPartonInfo->SetPartonFlag7(TMath::Abs(part7->GetPdgCode())); | |
160 | fStackPartonInfo->SetPartonPt7(part7->Pt()); | |
161 | fStackPartonInfo->SetPartonEta7(part7->Eta()); | |
162 | fStackPartonInfo->SetPartonPhi7(part7->Phi()); | |
163 | ||
6deabc32 | 164 | for (Int_t i=0;i<nprim;++i) { |
bd2cf60a | 165 | if (!stack->IsPhysicalPrimary(i)) |
166 | continue; | |
6deabc32 | 167 | TParticle *part = stack->Particle(i); |
bd2cf60a | 168 | TParticlePDG *pdg = part->GetPDG(1); |
169 | if (!pdg) | |
170 | continue; | |
171 | Int_t c = (Int_t)(TMath::Abs(pdg->Charge())); | |
72978588 | 172 | if (fChargedOnly && c==0) continue; |
bd2cf60a | 173 | Double_t pt = part->Pt(); |
174 | Double_t eta = part->Eta(); | |
175 | Double_t phi = part->Phi(); | |
176 | if (eta<fEtaMin) | |
177 | continue; | |
178 | if (eta>fEtaMax) | |
179 | continue; | |
180 | if (phi<fPhiMin) | |
181 | continue; | |
182 | if (phi>fPhiMax) | |
183 | continue; | |
184 | if (pt<fPtMin) | |
185 | continue; | |
186 | if (pt>fPtMax) | |
187 | continue; | |
4d3b366f | 188 | Double_t mass = part->GetMass(); |
189 | if(fMassless) mass = 0.; | |
8d2d2145 | 190 | fHistPt->Fill(pt); |
72978588 | 191 | fHistEtaPhi->Fill(eta,phi); |
4d3b366f | 192 | AddTrack(pt, eta, phi,0,0,0,0,0,0,c,mass); |
6deabc32 | 193 | } |
e6f3b167 | 194 | |
195 | FillPythiaHistograms(); | |
196 | } | |
197 | ||
198 | //________________________________________________________________________ | |
199 | void AliJetEmbeddingFromGenTask::FillPythiaHistograms() { | |
200 | //Get PYTHIA info: pt-hard, x-section, trials | |
201 | ||
202 | if (!fQAhistos) | |
203 | return; | |
204 | ||
205 | AliRunLoader *rl = AliRunLoader::Instance(); | |
206 | AliGenPythiaEventHeader *genPH = dynamic_cast<AliGenPythiaEventHeader*>(rl->GetHeader()->GenEventHeader()); | |
207 | if(genPH) { | |
e6f3b167 | 208 | Float_t xsec = genPH->GetXsection(); |
209 | Int_t trials = genPH->Trials(); | |
210 | Float_t pthard = genPH->GetPtHard(); | |
211 | ||
212 | fHistXsection->Fill(0.5,xsec); | |
213 | fHistTrials->Fill(0.5,trials); | |
214 | fHistPtHard->Fill(pthard); | |
215 | } | |
6deabc32 | 216 | } |