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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" |
d325d83f | 7 | #include "AliITSRecPointContainer.h" |
27167524 | 8 | |
9 | const Float_t AliITSVertexer::fgkPipeRadius = 3.0; | |
c5f0f3c1 | 10 | |
11 | ClassImp(AliITSVertexer) | |
12 | ||
13 | ////////////////////////////////////////////////////////////////////// | |
14 | // Base class for primary vertex reconstruction // | |
d681bb2d | 15 | // AliESDVertexer is a class for full 3D primary vertex finding // |
3acc14d5 | 16 | // derived classes: AliITSVertexerIons AliITSvertexer3D // |
17 | // AliITSVertexerCosmics // | |
c5f0f3c1 | 18 | ////////////////////////////////////////////////////////////////////// |
19 | ||
8c42830a | 20 | /* $Id$ */ |
21 | ||
c5f0f3c1 | 22 | //______________________________________________________________________ |
27167524 | 23 | AliITSVertexer::AliITSVertexer():AliVertexer(), |
24 | fLadders(), | |
308c2f7c | 25 | fLadOnLay2(0), |
06a7cbee | 26 | fDetTypeRec(NULL), |
8c32ba44 | 27 | fMinTrackletsForPilup(0), |
28 | fIsPileup(0), | |
29 | fNTrpuv(-2), | |
30 | fZpuv(-9999999.), | |
6b4d9537 | 31 | fNoVertices(0), |
32 | fVertArray(NULL), | |
308c2f7c | 33 | fFirstEvent(0), |
06a7cbee | 34 | fLastEvent(-1) |
27167524 | 35 | { |
308c2f7c | 36 | // Default Constructor |
27167524 | 37 | SetLaddersOnLayer2(); |
8c32ba44 | 38 | SetMinTrackletsForPilup(); |
8c42830a | 39 | for(Int_t i=0; i<kNSPDMod;i++) fUseModule[i]=kTRUE; |
c5f0f3c1 | 40 | } |
41 | ||
27167524 | 42 | //______________________________________________________________________ |
43 | AliITSVertexer::~AliITSVertexer() { | |
44 | // Destructor | |
6b4d9537 | 45 | if(fLadders) delete [] fLadders; |
46 | if (fNoVertices > 0){ | |
47 | delete []fVertArray; | |
48 | fVertArray = NULL; | |
49 | fNoVertices = 0; | |
50 | } | |
27167524 | 51 | } |
52 | ||
6b4d9537 | 53 | //______________________________________________________________________ |
54 | void AliITSVertexer::ResetVertex(){ | |
55 | // Resets vertex related data members | |
56 | if(fNoVertices > 0){ | |
57 | if(fVertArray) delete []fVertArray; | |
58 | fVertArray = NULL; | |
59 | fNoVertices = 0; | |
60 | } | |
61 | fIsPileup=kFALSE; | |
62 | fNTrpuv=-2; | |
63 | fZpuv=-99999.; | |
64 | ||
65 | } | |
32e449be | 66 | //______________________________________________________________________ |
308c2f7c | 67 | void AliITSVertexer::FindMultiplicity(TTree *itsClusterTree){ |
32e449be | 68 | // Invokes AliITSMultReconstructor to determine the |
69 | // charged multiplicity in the pixel layers | |
70 | if(fMult){delete fMult; fMult = 0;} | |
71 | Bool_t success=kTRUE; | |
52b373f6 | 72 | Bool_t cosmics=kFALSE; |
32e449be | 73 | if(!fCurrentVertex)success=kFALSE; |
74 | if(fCurrentVertex && fCurrentVertex->GetNContributors()<1)success=kFALSE; | |
52b373f6 | 75 | if(fCurrentVertex && strstr(fCurrentVertex->GetTitle(),"cosmics")) { |
76 | success=kFALSE; | |
77 | cosmics=kTRUE; | |
78 | } | |
9b373e9a | 79 | |
ff44c37c | 80 | // get the FastOr bit mask |
81 | TBits fastOrFiredMap = fDetTypeRec->GetFastOrFiredMap(); | |
82 | ||
9b373e9a | 83 | AliITSMultReconstructor multReco; |
84 | ||
32e449be | 85 | if(!success){ |
52b373f6 | 86 | if(!cosmics) { |
87 | AliWarning("Tracklets multiplicity not determined because the primary vertex was not found"); | |
88 | AliWarning("Just counting the number of cluster-fired chips on the SPD layers"); | |
89 | } | |
9b373e9a | 90 | if (!itsClusterTree) { |
91 | AliError(" Invalid ITS cluster tree !\n"); | |
92 | return; | |
93 | } | |
94 | multReco.LoadClusterFiredChips(itsClusterTree); | |
95 | Short_t nfcL1 = multReco.GetNFiredChips(0); | |
96 | Short_t nfcL2 = multReco.GetNFiredChips(1); | |
fa9ed8e9 | 97 | fMult = new AliMultiplicity(0,0,0,0,0,0,0,0,0,0,nfcL1,nfcL2,fastOrFiredMap); |
d325d83f | 98 | AliITSRecPointContainer* rcont = AliITSRecPointContainer::Instance(); |
99 | fMult->SetITSClusters(0,rcont->GetNClustersInLayer(1,itsClusterTree)); | |
100 | for(Int_t kk=2;kk<=6;kk++){ | |
101 | fMult->SetITSClusters(kk-1,rcont->GetNClustersInLayerFast(kk)); | |
102 | } | |
32e449be | 103 | return; |
104 | } | |
308c2f7c | 105 | |
32e449be | 106 | if (!itsClusterTree) { |
308c2f7c | 107 | AliError(" Invalid ITS cluster tree !\n"); |
32e449be | 108 | return; |
109 | } | |
110 | Double_t vtx[3]; | |
111 | fCurrentVertex->GetXYZ(vtx); | |
112 | Float_t vtxf[3]; | |
113 | for(Int_t i=0;i<3;i++)vtxf[i]=vtx[i]; | |
9b373e9a | 114 | multReco.SetHistOn(kFALSE); |
115 | multReco.Reconstruct(itsClusterTree,vtxf,vtxf); | |
116 | Int_t notracks=multReco.GetNTracklets(); | |
968e8539 | 117 | Float_t *tht = new Float_t [notracks]; |
32e449be | 118 | Float_t *phi = new Float_t [notracks]; |
fa9ed8e9 | 119 | Float_t *dtht = new Float_t [notracks]; |
32e449be | 120 | Float_t *dphi = new Float_t [notracks]; |
de4c520e | 121 | Int_t *labels = new Int_t[notracks]; |
0939e22a | 122 | Int_t *labelsL2 = new Int_t[notracks]; |
9b373e9a | 123 | for(Int_t i=0;i<multReco.GetNTracklets();i++){ |
124 | tht[i] = multReco.GetTracklet(i)[0]; | |
125 | phi[i] = multReco.GetTracklet(i)[1]; | |
fa9ed8e9 | 126 | dtht[i] = multReco.GetTracklet(i)[3]; |
9b373e9a | 127 | dphi[i] = multReco.GetTracklet(i)[2]; |
fa9ed8e9 | 128 | labels[i] = static_cast<Int_t>(multReco.GetTracklet(i)[4]); |
129 | labelsL2[i] = static_cast<Int_t>(multReco.GetTracklet(i)[5]); | |
32e449be | 130 | } |
9b373e9a | 131 | Int_t nosingleclus=multReco.GetNSingleClusters(); |
968e8539 | 132 | Float_t *ths = new Float_t [nosingleclus]; |
133 | Float_t *phs = new Float_t [nosingleclus]; | |
134 | for(Int_t i=0;i<nosingleclus;i++){ | |
9b373e9a | 135 | ths[i] = multReco.GetCluster(i)[0]; |
136 | phs[i] = multReco.GetCluster(i)[1]; | |
968e8539 | 137 | } |
9b373e9a | 138 | Short_t nfcL1 = multReco.GetNFiredChips(0); |
139 | Short_t nfcL2 = multReco.GetNFiredChips(1); | |
fa9ed8e9 | 140 | fMult = new AliMultiplicity(notracks,tht,phi,dtht,dphi,labels,labelsL2,nosingleclus,ths,phs,nfcL1,nfcL2,fastOrFiredMap); |
d325d83f | 141 | AliITSRecPointContainer* rcont = AliITSRecPointContainer::Instance(); |
142 | fMult->SetITSClusters(0,rcont->GetNClustersInLayer(1,itsClusterTree)); | |
143 | for(Int_t kk=2;kk<=6;kk++){ | |
144 | fMult->SetITSClusters(kk-1,rcont->GetNClustersInLayerFast(kk)); | |
145 | } | |
968e8539 | 146 | delete [] tht; |
32e449be | 147 | delete [] phi; |
fa9ed8e9 | 148 | delete [] dtht; |
32e449be | 149 | delete [] dphi; |
968e8539 | 150 | delete [] ths; |
151 | delete [] phs; | |
d6fc37c1 | 152 | delete [] labels; |
0939e22a | 153 | delete [] labelsL2; |
308c2f7c | 154 | |
32e449be | 155 | return; |
156 | } | |
c5f0f3c1 | 157 | |
27167524 | 158 | //______________________________________________________________________ |
159 | void AliITSVertexer::SetLaddersOnLayer2(Int_t ladwid){ | |
160 | // Calculates the array of ladders on layer 2 to be used with a | |
161 | // given ladder on layer 1 | |
162 | fLadOnLay2=ladwid; | |
32e63e47 | 163 | Int_t ladtot1=AliITSgeomTGeo::GetNLadders(1); |
27167524 | 164 | if(fLadders) delete [] fLadders; |
165 | fLadders=new UShort_t[ladtot1]; | |
166 | ||
167 | ||
168 | Double_t pos1[3],pos2[3]; | |
32e63e47 | 169 | Int_t mod1=AliITSgeomTGeo::GetModuleIndex(2,1,1); |
170 | AliITSgeomTGeo::GetTranslation(mod1,pos1); // position of the module in the MRS | |
27167524 | 171 | Double_t phi0=TMath::ATan2(pos1[1],pos1[0]); |
172 | if(phi0<0) phi0+=2*TMath::Pi(); | |
32e63e47 | 173 | Int_t mod2=AliITSgeomTGeo::GetModuleIndex(2,2,1); |
174 | AliITSgeomTGeo::GetTranslation(mod2,pos2); | |
27167524 | 175 | Double_t phi2=TMath::ATan2(pos2[1],pos2[0]); |
176 | if(phi2<0) phi2+=2*TMath::Pi(); | |
177 | Double_t deltaPhi= phi0-phi2; // phi width of a layer2 module | |
178 | ||
179 | for(Int_t i= 0; i<ladtot1;i++){ | |
32e63e47 | 180 | Int_t modlad= AliITSgeomTGeo::GetModuleIndex(1,i+1,1); |
27167524 | 181 | Double_t posmod[3]; |
32e63e47 | 182 | AliITSgeomTGeo::GetTranslation(modlad,posmod); |
27167524 | 183 | Double_t phimod=TMath::ATan2(posmod[1],posmod[0]); |
184 | if(phimod<0) phimod+=2*TMath::Pi(); | |
185 | Double_t phi1= phimod+deltaPhi*double(fLadOnLay2); | |
186 | if(phi1<0) phi1+=2*TMath::Pi(); | |
187 | if(phi1>2*TMath::Pi()) phi1-=2*TMath::Pi(); | |
188 | Double_t philad1=phi0-phi1; | |
189 | UShort_t lad1; | |
190 | Double_t ladder1=(philad1)/(deltaPhi) +1.; | |
191 | if(ladder1<1){ladder1=40+ladder1;} | |
192 | lad1=int(ladder1+0.5); | |
193 | fLadders[i]=lad1; | |
194 | } | |
195 | } | |
196 | ||
308c2f7c | 197 | #include "AliRunLoader.h" |
198 | ||
199 | //______________________________________________________________________ | |
200 | void AliITSVertexer::Init(TString filename){ | |
201 | // Initialize the vertexer in case of | |
202 | // analysis of an entire file | |
33c3c91a | 203 | AliRunLoader *rl = AliRunLoader::Instance(); |
308c2f7c | 204 | if(!rl){ |
205 | Fatal("AliITSVertexer","Run Loader not found"); | |
206 | } | |
207 | if (fLastEvent < 0) SetLastEvent(rl->GetNumberOfEvents()-1); | |
208 | ||
209 | AliITSLoader* itsloader = (AliITSLoader*) rl->GetLoader("ITSLoader"); | |
210 | if(!filename.Contains("default"))itsloader->SetVerticesFileName(filename); | |
211 | if(!filename.Contains("null"))itsloader->LoadVertices("recreate"); | |
212 | } | |
27167524 | 213 | |
c5f0f3c1 | 214 | //______________________________________________________________________ |
215 | void AliITSVertexer::WriteCurrentVertex(){ | |
216 | // Write the current AliVertex object to file fOutFile | |
33c3c91a | 217 | AliRunLoader *rl = AliRunLoader::Instance(); |
41b19549 | 218 | AliITSLoader* itsLoader = (AliITSLoader*) rl->GetLoader("ITSLoader"); |
88cb7938 | 219 | fCurrentVertex->SetName("Vertex"); |
220 | // const char * name = fCurrentVertex->GetName(); | |
41b19549 | 221 | // itsLoader->SetVerticesContName(name); |
222 | Int_t rc = itsLoader->PostVertex(fCurrentVertex); | |
223 | rc = itsLoader->WriteVertices(); | |
c5f0f3c1 | 224 | } |
de4c520e | 225 | |
308c2f7c | 226 | //______________________________________________________________________ |
227 | void AliITSVertexer::FindVertices(){ | |
228 | // computes the vertices of the events in the range FirstEvent - LastEvent | |
229 | ||
33c3c91a | 230 | AliRunLoader *rl = AliRunLoader::Instance(); |
308c2f7c | 231 | AliITSLoader* itsloader = (AliITSLoader*) rl->GetLoader("ITSLoader"); |
232 | itsloader->LoadRecPoints("read"); | |
233 | for(Int_t i=fFirstEvent;i<=fLastEvent;i++){ | |
234 | rl->GetEvent(i); | |
235 | TTree* cltree = itsloader->TreeR(); | |
236 | FindVertexForCurrentEvent(cltree); | |
237 | if(fCurrentVertex){ | |
238 | WriteCurrentVertex(); | |
239 | } | |
240 | else { | |
241 | AliDebug(1,Form("Vertex not found for event %d",i)); | |
242 | } | |
243 | } | |
244 | } |