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308c2f7c | 1 | #include "AliLog.h" |
2 | #include "AliMultiplicity.h" | |
32e63e47 | 3 | #include "AliITSgeomTGeo.h" |
27167524 | 4 | #include "AliITSVertexer.h" |
27167524 | 5 | #include "AliITSLoader.h" |
27167524 | 6 | #include "AliITSMultReconstructor.h" |
7 | ||
8 | const Float_t AliITSVertexer::fgkPipeRadius = 3.0; | |
c5f0f3c1 | 9 | |
10 | ClassImp(AliITSVertexer) | |
11 | ||
12 | ////////////////////////////////////////////////////////////////////// | |
13 | // Base class for primary vertex reconstruction // | |
d681bb2d | 14 | // AliESDVertexer is a class for full 3D primary vertex finding // |
3acc14d5 | 15 | // derived classes: AliITSVertexerIons AliITSvertexer3D // |
16 | // AliITSVertexerCosmics // | |
c5f0f3c1 | 17 | ////////////////////////////////////////////////////////////////////// |
18 | ||
19 | //______________________________________________________________________ | |
27167524 | 20 | AliITSVertexer::AliITSVertexer():AliVertexer(), |
21 | fLadders(), | |
308c2f7c | 22 | fLadOnLay2(0), |
23 | fFirstEvent(0), | |
24 | fLastEvent(-1) | |
27167524 | 25 | { |
308c2f7c | 26 | // Default Constructor |
27167524 | 27 | SetLaddersOnLayer2(); |
c5f0f3c1 | 28 | } |
29 | ||
27167524 | 30 | //______________________________________________________________________ |
31 | AliITSVertexer::~AliITSVertexer() { | |
32 | // Destructor | |
33 | if(fLadders) delete [] fLadders; | |
34 | } | |
35 | ||
32e449be | 36 | //______________________________________________________________________ |
308c2f7c | 37 | void AliITSVertexer::FindMultiplicity(TTree *itsClusterTree){ |
32e449be | 38 | // Invokes AliITSMultReconstructor to determine the |
39 | // charged multiplicity in the pixel layers | |
40 | if(fMult){delete fMult; fMult = 0;} | |
41 | Bool_t success=kTRUE; | |
42 | if(!fCurrentVertex)success=kFALSE; | |
43 | if(fCurrentVertex && fCurrentVertex->GetNContributors()<1)success=kFALSE; | |
9b373e9a | 44 | |
45 | AliITSMultReconstructor multReco; | |
46 | ||
32e449be | 47 | if(!success){ |
48 | AliWarning("Tracklets multiplicity not determined because the primary vertex was not found"); | |
9b373e9a | 49 | AliWarning("Just counting the number of cluster-fired chips on the SPD layers"); |
50 | if (!itsClusterTree) { | |
51 | AliError(" Invalid ITS cluster tree !\n"); | |
52 | return; | |
53 | } | |
54 | multReco.LoadClusterFiredChips(itsClusterTree); | |
55 | Short_t nfcL1 = multReco.GetNFiredChips(0); | |
56 | Short_t nfcL2 = multReco.GetNFiredChips(1); | |
57 | fMult = new AliMultiplicity(0,0,0,0,0,0,0,0,0,nfcL1,nfcL2); | |
32e449be | 58 | return; |
59 | } | |
308c2f7c | 60 | |
32e449be | 61 | if (!itsClusterTree) { |
308c2f7c | 62 | AliError(" Invalid ITS cluster tree !\n"); |
32e449be | 63 | return; |
64 | } | |
65 | Double_t vtx[3]; | |
66 | fCurrentVertex->GetXYZ(vtx); | |
67 | Float_t vtxf[3]; | |
68 | for(Int_t i=0;i<3;i++)vtxf[i]=vtx[i]; | |
9b373e9a | 69 | multReco.SetHistOn(kFALSE); |
70 | multReco.Reconstruct(itsClusterTree,vtxf,vtxf); | |
71 | Int_t notracks=multReco.GetNTracklets(); | |
968e8539 | 72 | Float_t *tht = new Float_t [notracks]; |
32e449be | 73 | Float_t *phi = new Float_t [notracks]; |
74 | Float_t *dphi = new Float_t [notracks]; | |
de4c520e | 75 | Int_t *labels = new Int_t[notracks]; |
0939e22a | 76 | Int_t *labelsL2 = new Int_t[notracks]; |
9b373e9a | 77 | for(Int_t i=0;i<multReco.GetNTracklets();i++){ |
78 | tht[i] = multReco.GetTracklet(i)[0]; | |
79 | phi[i] = multReco.GetTracklet(i)[1]; | |
80 | dphi[i] = multReco.GetTracklet(i)[2]; | |
81 | labels[i] = static_cast<Int_t>(multReco.GetTracklet(i)[3]); | |
82 | labelsL2[i] = static_cast<Int_t>(multReco.GetTracklet(i)[4]); | |
32e449be | 83 | } |
9b373e9a | 84 | Int_t nosingleclus=multReco.GetNSingleClusters(); |
968e8539 | 85 | Float_t *ths = new Float_t [nosingleclus]; |
86 | Float_t *phs = new Float_t [nosingleclus]; | |
87 | for(Int_t i=0;i<nosingleclus;i++){ | |
9b373e9a | 88 | ths[i] = multReco.GetCluster(i)[0]; |
89 | phs[i] = multReco.GetCluster(i)[1]; | |
968e8539 | 90 | } |
9b373e9a | 91 | Short_t nfcL1 = multReco.GetNFiredChips(0); |
92 | Short_t nfcL2 = multReco.GetNFiredChips(1); | |
93 | multReco.Dump(); | |
94 | fMult = new AliMultiplicity(notracks,tht,phi,dphi,labels,labelsL2,nosingleclus,ths,phs,nfcL1,nfcL2); | |
95 | ||
968e8539 | 96 | delete [] tht; |
32e449be | 97 | delete [] phi; |
98 | delete [] dphi; | |
968e8539 | 99 | delete [] ths; |
100 | delete [] phs; | |
d6fc37c1 | 101 | delete [] labels; |
0939e22a | 102 | delete [] labelsL2; |
308c2f7c | 103 | |
32e449be | 104 | return; |
105 | } | |
c5f0f3c1 | 106 | |
27167524 | 107 | //______________________________________________________________________ |
108 | void AliITSVertexer::SetLaddersOnLayer2(Int_t ladwid){ | |
109 | // Calculates the array of ladders on layer 2 to be used with a | |
110 | // given ladder on layer 1 | |
111 | fLadOnLay2=ladwid; | |
32e63e47 | 112 | Int_t ladtot1=AliITSgeomTGeo::GetNLadders(1); |
27167524 | 113 | if(fLadders) delete [] fLadders; |
114 | fLadders=new UShort_t[ladtot1]; | |
115 | ||
116 | ||
117 | Double_t pos1[3],pos2[3]; | |
32e63e47 | 118 | Int_t mod1=AliITSgeomTGeo::GetModuleIndex(2,1,1); |
119 | AliITSgeomTGeo::GetTranslation(mod1,pos1); // position of the module in the MRS | |
27167524 | 120 | Double_t phi0=TMath::ATan2(pos1[1],pos1[0]); |
121 | if(phi0<0) phi0+=2*TMath::Pi(); | |
32e63e47 | 122 | Int_t mod2=AliITSgeomTGeo::GetModuleIndex(2,2,1); |
123 | AliITSgeomTGeo::GetTranslation(mod2,pos2); | |
27167524 | 124 | Double_t phi2=TMath::ATan2(pos2[1],pos2[0]); |
125 | if(phi2<0) phi2+=2*TMath::Pi(); | |
126 | Double_t deltaPhi= phi0-phi2; // phi width of a layer2 module | |
127 | ||
128 | for(Int_t i= 0; i<ladtot1;i++){ | |
32e63e47 | 129 | Int_t modlad= AliITSgeomTGeo::GetModuleIndex(1,i+1,1); |
27167524 | 130 | Double_t posmod[3]; |
32e63e47 | 131 | AliITSgeomTGeo::GetTranslation(modlad,posmod); |
27167524 | 132 | Double_t phimod=TMath::ATan2(posmod[1],posmod[0]); |
133 | if(phimod<0) phimod+=2*TMath::Pi(); | |
134 | Double_t phi1= phimod+deltaPhi*double(fLadOnLay2); | |
135 | if(phi1<0) phi1+=2*TMath::Pi(); | |
136 | if(phi1>2*TMath::Pi()) phi1-=2*TMath::Pi(); | |
137 | Double_t philad1=phi0-phi1; | |
138 | UShort_t lad1; | |
139 | Double_t ladder1=(philad1)/(deltaPhi) +1.; | |
140 | if(ladder1<1){ladder1=40+ladder1;} | |
141 | lad1=int(ladder1+0.5); | |
142 | fLadders[i]=lad1; | |
143 | } | |
144 | } | |
145 | ||
308c2f7c | 146 | #include "AliRunLoader.h" |
147 | ||
148 | //______________________________________________________________________ | |
149 | void AliITSVertexer::Init(TString filename){ | |
150 | // Initialize the vertexer in case of | |
151 | // analysis of an entire file | |
152 | AliRunLoader *rl = AliRunLoader::GetRunLoader(); | |
153 | if(!rl){ | |
154 | Fatal("AliITSVertexer","Run Loader not found"); | |
155 | } | |
156 | if (fLastEvent < 0) SetLastEvent(rl->GetNumberOfEvents()-1); | |
157 | ||
158 | AliITSLoader* itsloader = (AliITSLoader*) rl->GetLoader("ITSLoader"); | |
159 | if(!filename.Contains("default"))itsloader->SetVerticesFileName(filename); | |
160 | if(!filename.Contains("null"))itsloader->LoadVertices("recreate"); | |
161 | } | |
27167524 | 162 | |
c5f0f3c1 | 163 | //______________________________________________________________________ |
164 | void AliITSVertexer::WriteCurrentVertex(){ | |
165 | // Write the current AliVertex object to file fOutFile | |
88cb7938 | 166 | AliRunLoader *rl = AliRunLoader::GetRunLoader(); |
41b19549 | 167 | AliITSLoader* itsLoader = (AliITSLoader*) rl->GetLoader("ITSLoader"); |
88cb7938 | 168 | fCurrentVertex->SetName("Vertex"); |
169 | // const char * name = fCurrentVertex->GetName(); | |
41b19549 | 170 | // itsLoader->SetVerticesContName(name); |
171 | Int_t rc = itsLoader->PostVertex(fCurrentVertex); | |
172 | rc = itsLoader->WriteVertices(); | |
c5f0f3c1 | 173 | } |
de4c520e | 174 | |
308c2f7c | 175 | //______________________________________________________________________ |
176 | void AliITSVertexer::FindVertices(){ | |
177 | // computes the vertices of the events in the range FirstEvent - LastEvent | |
178 | ||
179 | AliRunLoader *rl = AliRunLoader::GetRunLoader(); | |
180 | AliITSLoader* itsloader = (AliITSLoader*) rl->GetLoader("ITSLoader"); | |
181 | itsloader->LoadRecPoints("read"); | |
182 | for(Int_t i=fFirstEvent;i<=fLastEvent;i++){ | |
183 | rl->GetEvent(i); | |
184 | TTree* cltree = itsloader->TreeR(); | |
185 | FindVertexForCurrentEvent(cltree); | |
186 | if(fCurrentVertex){ | |
187 | WriteCurrentVertex(); | |
188 | } | |
189 | else { | |
190 | AliDebug(1,Form("Vertex not found for event %d",i)); | |
191 | } | |
192 | } | |
193 | } |