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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 | ||
8c42830a | 19 | /* $Id$ */ |
20 | ||
c5f0f3c1 | 21 | //______________________________________________________________________ |
27167524 | 22 | AliITSVertexer::AliITSVertexer():AliVertexer(), |
23 | fLadders(), | |
308c2f7c | 24 | fLadOnLay2(0), |
25 | fFirstEvent(0), | |
ff44c37c | 26 | fLastEvent(-1), |
27 | fDetTypeRec(NULL) | |
27167524 | 28 | { |
308c2f7c | 29 | // Default Constructor |
27167524 | 30 | SetLaddersOnLayer2(); |
8c42830a | 31 | for(Int_t i=0; i<kNSPDMod;i++) fUseModule[i]=kTRUE; |
c5f0f3c1 | 32 | } |
33 | ||
27167524 | 34 | //______________________________________________________________________ |
35 | AliITSVertexer::~AliITSVertexer() { | |
36 | // Destructor | |
37 | if(fLadders) delete [] fLadders; | |
38 | } | |
39 | ||
32e449be | 40 | //______________________________________________________________________ |
308c2f7c | 41 | void AliITSVertexer::FindMultiplicity(TTree *itsClusterTree){ |
32e449be | 42 | // Invokes AliITSMultReconstructor to determine the |
43 | // charged multiplicity in the pixel layers | |
44 | if(fMult){delete fMult; fMult = 0;} | |
45 | Bool_t success=kTRUE; | |
46 | if(!fCurrentVertex)success=kFALSE; | |
47 | if(fCurrentVertex && fCurrentVertex->GetNContributors()<1)success=kFALSE; | |
9b373e9a | 48 | |
ff44c37c | 49 | // get the FastOr bit mask |
50 | TBits fastOrFiredMap = fDetTypeRec->GetFastOrFiredMap(); | |
51 | ||
9b373e9a | 52 | AliITSMultReconstructor multReco; |
53 | ||
32e449be | 54 | if(!success){ |
55 | AliWarning("Tracklets multiplicity not determined because the primary vertex was not found"); | |
9b373e9a | 56 | AliWarning("Just counting the number of cluster-fired chips on the SPD layers"); |
57 | if (!itsClusterTree) { | |
58 | AliError(" Invalid ITS cluster tree !\n"); | |
59 | return; | |
60 | } | |
61 | multReco.LoadClusterFiredChips(itsClusterTree); | |
62 | Short_t nfcL1 = multReco.GetNFiredChips(0); | |
63 | Short_t nfcL2 = multReco.GetNFiredChips(1); | |
ff44c37c | 64 | fMult = new AliMultiplicity(0,0,0,0,0,0,0,0,0,nfcL1,nfcL2,fastOrFiredMap); |
32e449be | 65 | return; |
66 | } | |
308c2f7c | 67 | |
32e449be | 68 | if (!itsClusterTree) { |
308c2f7c | 69 | AliError(" Invalid ITS cluster tree !\n"); |
32e449be | 70 | return; |
71 | } | |
72 | Double_t vtx[3]; | |
73 | fCurrentVertex->GetXYZ(vtx); | |
74 | Float_t vtxf[3]; | |
75 | for(Int_t i=0;i<3;i++)vtxf[i]=vtx[i]; | |
9b373e9a | 76 | multReco.SetHistOn(kFALSE); |
77 | multReco.Reconstruct(itsClusterTree,vtxf,vtxf); | |
78 | Int_t notracks=multReco.GetNTracklets(); | |
968e8539 | 79 | Float_t *tht = new Float_t [notracks]; |
32e449be | 80 | Float_t *phi = new Float_t [notracks]; |
81 | Float_t *dphi = new Float_t [notracks]; | |
de4c520e | 82 | Int_t *labels = new Int_t[notracks]; |
0939e22a | 83 | Int_t *labelsL2 = new Int_t[notracks]; |
9b373e9a | 84 | for(Int_t i=0;i<multReco.GetNTracklets();i++){ |
85 | tht[i] = multReco.GetTracklet(i)[0]; | |
86 | phi[i] = multReco.GetTracklet(i)[1]; | |
87 | dphi[i] = multReco.GetTracklet(i)[2]; | |
88 | labels[i] = static_cast<Int_t>(multReco.GetTracklet(i)[3]); | |
89 | labelsL2[i] = static_cast<Int_t>(multReco.GetTracklet(i)[4]); | |
32e449be | 90 | } |
9b373e9a | 91 | Int_t nosingleclus=multReco.GetNSingleClusters(); |
968e8539 | 92 | Float_t *ths = new Float_t [nosingleclus]; |
93 | Float_t *phs = new Float_t [nosingleclus]; | |
94 | for(Int_t i=0;i<nosingleclus;i++){ | |
9b373e9a | 95 | ths[i] = multReco.GetCluster(i)[0]; |
96 | phs[i] = multReco.GetCluster(i)[1]; | |
968e8539 | 97 | } |
9b373e9a | 98 | Short_t nfcL1 = multReco.GetNFiredChips(0); |
99 | Short_t nfcL2 = multReco.GetNFiredChips(1); | |
ff44c37c | 100 | fMult = new AliMultiplicity(notracks,tht,phi,dphi,labels,labelsL2,nosingleclus,ths,phs,nfcL1,nfcL2,fastOrFiredMap); |
9b373e9a | 101 | |
968e8539 | 102 | delete [] tht; |
32e449be | 103 | delete [] phi; |
104 | delete [] dphi; | |
968e8539 | 105 | delete [] ths; |
106 | delete [] phs; | |
d6fc37c1 | 107 | delete [] labels; |
0939e22a | 108 | delete [] labelsL2; |
308c2f7c | 109 | |
32e449be | 110 | return; |
111 | } | |
c5f0f3c1 | 112 | |
27167524 | 113 | //______________________________________________________________________ |
114 | void AliITSVertexer::SetLaddersOnLayer2(Int_t ladwid){ | |
115 | // Calculates the array of ladders on layer 2 to be used with a | |
116 | // given ladder on layer 1 | |
117 | fLadOnLay2=ladwid; | |
32e63e47 | 118 | Int_t ladtot1=AliITSgeomTGeo::GetNLadders(1); |
27167524 | 119 | if(fLadders) delete [] fLadders; |
120 | fLadders=new UShort_t[ladtot1]; | |
121 | ||
122 | ||
123 | Double_t pos1[3],pos2[3]; | |
32e63e47 | 124 | Int_t mod1=AliITSgeomTGeo::GetModuleIndex(2,1,1); |
125 | AliITSgeomTGeo::GetTranslation(mod1,pos1); // position of the module in the MRS | |
27167524 | 126 | Double_t phi0=TMath::ATan2(pos1[1],pos1[0]); |
127 | if(phi0<0) phi0+=2*TMath::Pi(); | |
32e63e47 | 128 | Int_t mod2=AliITSgeomTGeo::GetModuleIndex(2,2,1); |
129 | AliITSgeomTGeo::GetTranslation(mod2,pos2); | |
27167524 | 130 | Double_t phi2=TMath::ATan2(pos2[1],pos2[0]); |
131 | if(phi2<0) phi2+=2*TMath::Pi(); | |
132 | Double_t deltaPhi= phi0-phi2; // phi width of a layer2 module | |
133 | ||
134 | for(Int_t i= 0; i<ladtot1;i++){ | |
32e63e47 | 135 | Int_t modlad= AliITSgeomTGeo::GetModuleIndex(1,i+1,1); |
27167524 | 136 | Double_t posmod[3]; |
32e63e47 | 137 | AliITSgeomTGeo::GetTranslation(modlad,posmod); |
27167524 | 138 | Double_t phimod=TMath::ATan2(posmod[1],posmod[0]); |
139 | if(phimod<0) phimod+=2*TMath::Pi(); | |
140 | Double_t phi1= phimod+deltaPhi*double(fLadOnLay2); | |
141 | if(phi1<0) phi1+=2*TMath::Pi(); | |
142 | if(phi1>2*TMath::Pi()) phi1-=2*TMath::Pi(); | |
143 | Double_t philad1=phi0-phi1; | |
144 | UShort_t lad1; | |
145 | Double_t ladder1=(philad1)/(deltaPhi) +1.; | |
146 | if(ladder1<1){ladder1=40+ladder1;} | |
147 | lad1=int(ladder1+0.5); | |
148 | fLadders[i]=lad1; | |
149 | } | |
150 | } | |
151 | ||
308c2f7c | 152 | #include "AliRunLoader.h" |
153 | ||
154 | //______________________________________________________________________ | |
155 | void AliITSVertexer::Init(TString filename){ | |
156 | // Initialize the vertexer in case of | |
157 | // analysis of an entire file | |
158 | AliRunLoader *rl = AliRunLoader::GetRunLoader(); | |
159 | if(!rl){ | |
160 | Fatal("AliITSVertexer","Run Loader not found"); | |
161 | } | |
162 | if (fLastEvent < 0) SetLastEvent(rl->GetNumberOfEvents()-1); | |
163 | ||
164 | AliITSLoader* itsloader = (AliITSLoader*) rl->GetLoader("ITSLoader"); | |
165 | if(!filename.Contains("default"))itsloader->SetVerticesFileName(filename); | |
166 | if(!filename.Contains("null"))itsloader->LoadVertices("recreate"); | |
167 | } | |
27167524 | 168 | |
c5f0f3c1 | 169 | //______________________________________________________________________ |
170 | void AliITSVertexer::WriteCurrentVertex(){ | |
171 | // Write the current AliVertex object to file fOutFile | |
88cb7938 | 172 | AliRunLoader *rl = AliRunLoader::GetRunLoader(); |
41b19549 | 173 | AliITSLoader* itsLoader = (AliITSLoader*) rl->GetLoader("ITSLoader"); |
88cb7938 | 174 | fCurrentVertex->SetName("Vertex"); |
175 | // const char * name = fCurrentVertex->GetName(); | |
41b19549 | 176 | // itsLoader->SetVerticesContName(name); |
177 | Int_t rc = itsLoader->PostVertex(fCurrentVertex); | |
178 | rc = itsLoader->WriteVertices(); | |
c5f0f3c1 | 179 | } |
de4c520e | 180 | |
308c2f7c | 181 | //______________________________________________________________________ |
182 | void AliITSVertexer::FindVertices(){ | |
183 | // computes the vertices of the events in the range FirstEvent - LastEvent | |
184 | ||
185 | AliRunLoader *rl = AliRunLoader::GetRunLoader(); | |
186 | AliITSLoader* itsloader = (AliITSLoader*) rl->GetLoader("ITSLoader"); | |
187 | itsloader->LoadRecPoints("read"); | |
188 | for(Int_t i=fFirstEvent;i<=fLastEvent;i++){ | |
189 | rl->GetEvent(i); | |
190 | TTree* cltree = itsloader->TreeR(); | |
191 | FindVertexForCurrentEvent(cltree); | |
192 | if(fCurrentVertex){ | |
193 | WriteCurrentVertex(); | |
194 | } | |
195 | else { | |
196 | AliDebug(1,Form("Vertex not found for event %d",i)); | |
197 | } | |
198 | } | |
199 | } |