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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), |
06a7cbee | 25 | fDetTypeRec(NULL), |
8c32ba44 | 26 | fMinTrackletsForPilup(0), |
27 | fIsPileup(0), | |
28 | fNTrpuv(-2), | |
29 | fZpuv(-9999999.), | |
308c2f7c | 30 | fFirstEvent(0), |
06a7cbee | 31 | fLastEvent(-1) |
27167524 | 32 | { |
308c2f7c | 33 | // Default Constructor |
27167524 | 34 | SetLaddersOnLayer2(); |
8c32ba44 | 35 | SetMinTrackletsForPilup(); |
8c42830a | 36 | for(Int_t i=0; i<kNSPDMod;i++) fUseModule[i]=kTRUE; |
c5f0f3c1 | 37 | } |
38 | ||
27167524 | 39 | //______________________________________________________________________ |
40 | AliITSVertexer::~AliITSVertexer() { | |
41 | // Destructor | |
42 | if(fLadders) delete [] fLadders; | |
43 | } | |
44 | ||
32e449be | 45 | //______________________________________________________________________ |
308c2f7c | 46 | void AliITSVertexer::FindMultiplicity(TTree *itsClusterTree){ |
32e449be | 47 | // Invokes AliITSMultReconstructor to determine the |
48 | // charged multiplicity in the pixel layers | |
49 | if(fMult){delete fMult; fMult = 0;} | |
50 | Bool_t success=kTRUE; | |
51 | if(!fCurrentVertex)success=kFALSE; | |
52 | if(fCurrentVertex && fCurrentVertex->GetNContributors()<1)success=kFALSE; | |
9b373e9a | 53 | |
ff44c37c | 54 | // get the FastOr bit mask |
55 | TBits fastOrFiredMap = fDetTypeRec->GetFastOrFiredMap(); | |
56 | ||
9b373e9a | 57 | AliITSMultReconstructor multReco; |
58 | ||
32e449be | 59 | if(!success){ |
60 | AliWarning("Tracklets multiplicity not determined because the primary vertex was not found"); | |
9b373e9a | 61 | AliWarning("Just counting the number of cluster-fired chips on the SPD layers"); |
62 | if (!itsClusterTree) { | |
63 | AliError(" Invalid ITS cluster tree !\n"); | |
64 | return; | |
65 | } | |
66 | multReco.LoadClusterFiredChips(itsClusterTree); | |
67 | Short_t nfcL1 = multReco.GetNFiredChips(0); | |
68 | Short_t nfcL2 = multReco.GetNFiredChips(1); | |
ff44c37c | 69 | fMult = new AliMultiplicity(0,0,0,0,0,0,0,0,0,nfcL1,nfcL2,fastOrFiredMap); |
32e449be | 70 | return; |
71 | } | |
308c2f7c | 72 | |
32e449be | 73 | if (!itsClusterTree) { |
308c2f7c | 74 | AliError(" Invalid ITS cluster tree !\n"); |
32e449be | 75 | return; |
76 | } | |
77 | Double_t vtx[3]; | |
78 | fCurrentVertex->GetXYZ(vtx); | |
79 | Float_t vtxf[3]; | |
80 | for(Int_t i=0;i<3;i++)vtxf[i]=vtx[i]; | |
9b373e9a | 81 | multReco.SetHistOn(kFALSE); |
82 | multReco.Reconstruct(itsClusterTree,vtxf,vtxf); | |
83 | Int_t notracks=multReco.GetNTracklets(); | |
968e8539 | 84 | Float_t *tht = new Float_t [notracks]; |
32e449be | 85 | Float_t *phi = new Float_t [notracks]; |
86 | Float_t *dphi = new Float_t [notracks]; | |
de4c520e | 87 | Int_t *labels = new Int_t[notracks]; |
0939e22a | 88 | Int_t *labelsL2 = new Int_t[notracks]; |
9b373e9a | 89 | for(Int_t i=0;i<multReco.GetNTracklets();i++){ |
90 | tht[i] = multReco.GetTracklet(i)[0]; | |
91 | phi[i] = multReco.GetTracklet(i)[1]; | |
92 | dphi[i] = multReco.GetTracklet(i)[2]; | |
93 | labels[i] = static_cast<Int_t>(multReco.GetTracklet(i)[3]); | |
94 | labelsL2[i] = static_cast<Int_t>(multReco.GetTracklet(i)[4]); | |
32e449be | 95 | } |
9b373e9a | 96 | Int_t nosingleclus=multReco.GetNSingleClusters(); |
968e8539 | 97 | Float_t *ths = new Float_t [nosingleclus]; |
98 | Float_t *phs = new Float_t [nosingleclus]; | |
99 | for(Int_t i=0;i<nosingleclus;i++){ | |
9b373e9a | 100 | ths[i] = multReco.GetCluster(i)[0]; |
101 | phs[i] = multReco.GetCluster(i)[1]; | |
968e8539 | 102 | } |
9b373e9a | 103 | Short_t nfcL1 = multReco.GetNFiredChips(0); |
104 | Short_t nfcL2 = multReco.GetNFiredChips(1); | |
ff44c37c | 105 | fMult = new AliMultiplicity(notracks,tht,phi,dphi,labels,labelsL2,nosingleclus,ths,phs,nfcL1,nfcL2,fastOrFiredMap); |
9b373e9a | 106 | |
968e8539 | 107 | delete [] tht; |
32e449be | 108 | delete [] phi; |
109 | delete [] dphi; | |
968e8539 | 110 | delete [] ths; |
111 | delete [] phs; | |
d6fc37c1 | 112 | delete [] labels; |
0939e22a | 113 | delete [] labelsL2; |
308c2f7c | 114 | |
32e449be | 115 | return; |
116 | } | |
c5f0f3c1 | 117 | |
27167524 | 118 | //______________________________________________________________________ |
119 | void AliITSVertexer::SetLaddersOnLayer2(Int_t ladwid){ | |
120 | // Calculates the array of ladders on layer 2 to be used with a | |
121 | // given ladder on layer 1 | |
122 | fLadOnLay2=ladwid; | |
32e63e47 | 123 | Int_t ladtot1=AliITSgeomTGeo::GetNLadders(1); |
27167524 | 124 | if(fLadders) delete [] fLadders; |
125 | fLadders=new UShort_t[ladtot1]; | |
126 | ||
127 | ||
128 | Double_t pos1[3],pos2[3]; | |
32e63e47 | 129 | Int_t mod1=AliITSgeomTGeo::GetModuleIndex(2,1,1); |
130 | AliITSgeomTGeo::GetTranslation(mod1,pos1); // position of the module in the MRS | |
27167524 | 131 | Double_t phi0=TMath::ATan2(pos1[1],pos1[0]); |
132 | if(phi0<0) phi0+=2*TMath::Pi(); | |
32e63e47 | 133 | Int_t mod2=AliITSgeomTGeo::GetModuleIndex(2,2,1); |
134 | AliITSgeomTGeo::GetTranslation(mod2,pos2); | |
27167524 | 135 | Double_t phi2=TMath::ATan2(pos2[1],pos2[0]); |
136 | if(phi2<0) phi2+=2*TMath::Pi(); | |
137 | Double_t deltaPhi= phi0-phi2; // phi width of a layer2 module | |
138 | ||
139 | for(Int_t i= 0; i<ladtot1;i++){ | |
32e63e47 | 140 | Int_t modlad= AliITSgeomTGeo::GetModuleIndex(1,i+1,1); |
27167524 | 141 | Double_t posmod[3]; |
32e63e47 | 142 | AliITSgeomTGeo::GetTranslation(modlad,posmod); |
27167524 | 143 | Double_t phimod=TMath::ATan2(posmod[1],posmod[0]); |
144 | if(phimod<0) phimod+=2*TMath::Pi(); | |
145 | Double_t phi1= phimod+deltaPhi*double(fLadOnLay2); | |
146 | if(phi1<0) phi1+=2*TMath::Pi(); | |
147 | if(phi1>2*TMath::Pi()) phi1-=2*TMath::Pi(); | |
148 | Double_t philad1=phi0-phi1; | |
149 | UShort_t lad1; | |
150 | Double_t ladder1=(philad1)/(deltaPhi) +1.; | |
151 | if(ladder1<1){ladder1=40+ladder1;} | |
152 | lad1=int(ladder1+0.5); | |
153 | fLadders[i]=lad1; | |
154 | } | |
155 | } | |
156 | ||
308c2f7c | 157 | #include "AliRunLoader.h" |
158 | ||
159 | //______________________________________________________________________ | |
160 | void AliITSVertexer::Init(TString filename){ | |
161 | // Initialize the vertexer in case of | |
162 | // analysis of an entire file | |
33c3c91a | 163 | AliRunLoader *rl = AliRunLoader::Instance(); |
308c2f7c | 164 | if(!rl){ |
165 | Fatal("AliITSVertexer","Run Loader not found"); | |
166 | } | |
167 | if (fLastEvent < 0) SetLastEvent(rl->GetNumberOfEvents()-1); | |
168 | ||
169 | AliITSLoader* itsloader = (AliITSLoader*) rl->GetLoader("ITSLoader"); | |
170 | if(!filename.Contains("default"))itsloader->SetVerticesFileName(filename); | |
171 | if(!filename.Contains("null"))itsloader->LoadVertices("recreate"); | |
172 | } | |
27167524 | 173 | |
c5f0f3c1 | 174 | //______________________________________________________________________ |
175 | void AliITSVertexer::WriteCurrentVertex(){ | |
176 | // Write the current AliVertex object to file fOutFile | |
33c3c91a | 177 | AliRunLoader *rl = AliRunLoader::Instance(); |
41b19549 | 178 | AliITSLoader* itsLoader = (AliITSLoader*) rl->GetLoader("ITSLoader"); |
88cb7938 | 179 | fCurrentVertex->SetName("Vertex"); |
180 | // const char * name = fCurrentVertex->GetName(); | |
41b19549 | 181 | // itsLoader->SetVerticesContName(name); |
182 | Int_t rc = itsLoader->PostVertex(fCurrentVertex); | |
183 | rc = itsLoader->WriteVertices(); | |
c5f0f3c1 | 184 | } |
de4c520e | 185 | |
308c2f7c | 186 | //______________________________________________________________________ |
187 | void AliITSVertexer::FindVertices(){ | |
188 | // computes the vertices of the events in the range FirstEvent - LastEvent | |
189 | ||
33c3c91a | 190 | AliRunLoader *rl = AliRunLoader::Instance(); |
308c2f7c | 191 | AliITSLoader* itsloader = (AliITSLoader*) rl->GetLoader("ITSLoader"); |
192 | itsloader->LoadRecPoints("read"); | |
193 | for(Int_t i=fFirstEvent;i<=fLastEvent;i++){ | |
194 | rl->GetEvent(i); | |
195 | TTree* cltree = itsloader->TreeR(); | |
196 | FindVertexForCurrentEvent(cltree); | |
197 | if(fCurrentVertex){ | |
198 | WriteCurrentVertex(); | |
199 | } | |
200 | else { | |
201 | AliDebug(1,Form("Vertex not found for event %d",i)); | |
202 | } | |
203 | } | |
204 | } |