]>
Commit | Line | Data |
---|---|---|
6d1c79ca | 1 | //------------------------------------------------------------------------------\r |
2 | // Implementation of AliComparisonDCA class. It keeps information from \r | |
3 | // comparison of reconstructed and MC particle tracks. In addtion, \r | |
4 | // it keeps selection cuts used during comparison. The comparison \r | |
5 | // information is stored in the ROOT histograms. Analysis of these \r | |
6 | // histograms can be done by using Analyse() class function. The result of \r | |
7 | // the analysis (histograms) are stored in the output picture_dca.root file.\r | |
8 | // \r | |
9 | // Author: J.Otwinowski 04/02/2008 \r | |
10 | //------------------------------------------------------------------------------\r | |
11 | \r | |
12 | /*\r | |
13 | // after running analysis, read the file, and get component\r | |
14 | gSystem->Load("libPWG1.so");\r | |
15 | TFile f("Output.root");\r | |
16 | AliComparisonDCA * comp = (AliComparisonDCA*)f.Get("AliComparisonDCA");\r | |
17 | \r | |
18 | // analyse comparison data (output stored in pictures_dca.root)\r | |
19 | comp->Analyse();\r | |
20 | \r | |
21 | // TPC track length parameterisation\r | |
22 | TF1 fl("fl","((min(250./(abs(x+0.000001)),250)-90))",0,2); // length function\r | |
23 | TF1 fl2("fl2","[0]/((min(250./(abs(x+0.000001)),250)-90))^[1]",0,2);\r | |
24 | fl2.SetParameter(1,1);\r | |
25 | fl2.SetParameter(0,1);\r | |
26 | */\r | |
27 | \r | |
28 | #include <iostream>\r | |
29 | \r | |
30 | #include "TFile.h"\r | |
31 | #include "TCint.h"\r | |
32 | #include "TH3F.h"\r | |
33 | #include "TH2F.h"\r | |
34 | #include "TF1.h"\r | |
35 | #include "TProfile.h"\r | |
36 | #include "TProfile2D.h"\r | |
37 | #include "TGraph2D.h"\r | |
38 | #include "TCanvas.h"\r | |
39 | #include "TGraph.h"\r | |
40 | // \r | |
41 | #include "AliTracker.h" \r | |
42 | #include "AliESDEvent.h" \r | |
43 | #include "AliESD.h"\r | |
44 | #include "AliESDfriend.h"\r | |
45 | #include "AliESDfriendTrack.h"\r | |
46 | #include "AliRecInfoCuts.h" \r | |
47 | #include "AliMCInfoCuts.h" \r | |
48 | #include "AliLog.h" \r | |
49 | #include "AliESDVertex.h" \r | |
50 | //\r | |
51 | #include "AliMathBase.h"\r | |
52 | #include "AliTreeDraw.h" \r | |
53 | \r | |
54 | #include "AliMCInfo.h" \r | |
55 | #include "AliESDRecInfo.h" \r | |
56 | #include "AliComparisonDCA.h" \r | |
57 | \r | |
58 | using namespace std;\r | |
59 | \r | |
60 | ClassImp(AliComparisonDCA)\r | |
61 | \r | |
62 | //_____________________________________________________________________________\r | |
63 | AliComparisonDCA::AliComparisonDCA():\r | |
64 | TNamed("AliComparisonDCA","AliComparisonDCA"),\r | |
65 | \r | |
66 | // DCA histograms\r | |
67 | fD0TanSPtB1(0),\r | |
68 | fD1TanSPtB1(0),\r | |
69 | fD0TanSPtL1(0),\r | |
70 | fD1TanSPtL1(0),\r | |
71 | fD0TanSPtInTPC(0),\r | |
72 | fD1TanSPtInTPC(0),\r | |
73 | fVertex(0),\r | |
74 | \r | |
75 | // Cuts \r | |
76 | fCutsRC(0), \r | |
77 | fCutsMC(0) \r | |
78 | {\r | |
79 | InitHisto();\r | |
80 | InitCuts();\r | |
81 | \r | |
82 | // vertex (0,0,0)\r | |
83 | fVertex = new AliESDVertex();\r | |
84 | fVertex->SetXv(0.0);\r | |
85 | fVertex->SetYv(0.0);\r | |
86 | fVertex->SetZv(0.0);\r | |
87 | }\r | |
88 | \r | |
89 | //_____________________________________________________________________________\r | |
90 | AliComparisonDCA::~AliComparisonDCA()\r | |
91 | {\r | |
92 | //\r | |
93 | if(fD0TanSPtB1) delete fD0TanSPtB1; fD0TanSPtB1=0;\r | |
94 | if(fD1TanSPtB1) delete fD1TanSPtB1; fD1TanSPtB1=0;\r | |
95 | if(fD0TanSPtL1) delete fD0TanSPtL1; fD0TanSPtL1=0;\r | |
96 | if(fD1TanSPtL1) delete fD1TanSPtL1; fD1TanSPtL1=0;\r | |
97 | if(fD0TanSPtInTPC) delete fD0TanSPtInTPC; fD0TanSPtInTPC=0;\r | |
98 | if(fD1TanSPtInTPC) delete fD1TanSPtInTPC; fD1TanSPtInTPC=0;\r | |
99 | if(fVertex) delete fVertex; fVertex=0;\r | |
100 | }\r | |
101 | \r | |
102 | //_____________________________________________________________________________\r | |
103 | void AliComparisonDCA::InitHisto()\r | |
104 | {\r | |
105 | // DCA histograms\r | |
106 | fD0TanSPtB1 = new TH3F("DCAyTanSPtB1","DCAyTanSPt",40,-2,2, 10,0.3,3, 100,-1,1);\r | |
107 | fD0TanSPtB1->SetXTitle("tan(#theta)");\r | |
108 | fD0TanSPtB1->SetYTitle("#sqrt{p_{t}(GeV/c)}");\r | |
109 | fD0TanSPtB1->SetZTitle("DCA_{xy}");\r | |
110 | \r | |
111 | fD1TanSPtB1 = new TH3F("DCAzTanSPtB1","DCAzTanSPt",40,-2,2, 10,0.3,3, 100,-1,1);\r | |
112 | fD1TanSPtB1->SetXTitle("tan(#theta)");\r | |
113 | fD1TanSPtB1->SetYTitle("#sqrt(p_{t}(GeV/c))");\r | |
114 | fD1TanSPtB1->SetZTitle("DCA_{z}");\r | |
115 | \r | |
116 | fD0TanSPtL1 = new TH3F("DCAyTanSPtL1","DCAyTanSPt",40,-2,2, 10,0.3,3, 100,-1,1);\r | |
117 | fD0TanSPtL1->SetXTitle("tan(#theta)");\r | |
118 | fD0TanSPtL1->SetYTitle("#sqrt{p_{t}(GeV/c)}");\r | |
119 | fD0TanSPtL1->SetZTitle("DCA_{xy}");\r | |
120 | \r | |
121 | fD1TanSPtL1 = new TH3F("DCAzTanSPtL1","DCAzTanSPt",40,-2,2, 10,0.3,3, 100, -1,1);\r | |
122 | fD1TanSPtL1->SetXTitle("tan(#theta)");\r | |
123 | fD1TanSPtL1->SetYTitle("#sqrt{p_{t}(GeV/c)}");\r | |
124 | fD1TanSPtL1->SetZTitle("DCA_{z}");\r | |
125 | \r | |
126 | fD0TanSPtInTPC = new TH3F("DCAyTanSPtInTPC","DCAyTanSPt",40,-2,2, 10,0.3,3, 100,-1,1);\r | |
127 | fD0TanSPtInTPC->SetXTitle("tan(#theta)");\r | |
128 | fD0TanSPtInTPC->SetYTitle("#sqrt{p_{t}(GeV/c)}");\r | |
129 | fD0TanSPtInTPC->SetZTitle("DCA_{xy}");\r | |
130 | \r | |
131 | fD1TanSPtInTPC = new TH3F("DCAzTanSPtInTPC","DCAzTanSPt",40,-2,2, 10,0.3,3, 100, -1,1);\r | |
132 | fD1TanSPtInTPC->SetXTitle("tan(#theta)");\r | |
133 | fD1TanSPtInTPC->SetYTitle("#sqrt{p_{t}(GeV/c)}");\r | |
134 | fD1TanSPtInTPC->SetZTitle("DCA_{z}");\r | |
135 | }\r | |
136 | \r | |
137 | //_____________________________________________________________________________\r | |
138 | void AliComparisonDCA::InitCuts()\r | |
139 | {\r | |
140 | if(!fCutsMC) \r | |
141 | AliDebug(AliLog::kError, "ERROR: Cannot find AliMCInfoCuts object");\r | |
142 | if(!fCutsRC) \r | |
143 | AliDebug(AliLog::kError, "ERROR: Cannot find AliRecInfoCuts object");\r | |
144 | }\r | |
145 | \r | |
146 | //_____________________________________________________________________________\r | |
147 | void AliComparisonDCA::Process(AliMCInfo* infoMC, AliESDRecInfo *infoRC)\r | |
148 | {\r | |
149 | // Fill DCA comparison information\r | |
150 | AliExternalTrackParam *track = 0;\r | |
151 | Double_t kRadius = 3.0; // beam pipe radius\r | |
152 | Double_t kMaxStep = 5.0; // max step\r | |
153 | Double_t field = AliTracker::GetBz(); // nominal Bz field [kG]\r | |
154 | Double_t kMaxD = 123456.0; // max distance\r | |
155 | \r | |
156 | Int_t clusterITS[200];\r | |
157 | Double_t dca[2], cov[3]; // dca_xy, dca_z, sigma_xy, sigma_xy_z, sigma_z\r | |
158 | \r | |
159 | Float_t mcpt = infoMC->GetParticle().Pt();\r | |
160 | Float_t tantheta = TMath::Tan(infoMC->GetParticle().Theta()-TMath::Pi()*0.5);\r | |
161 | Float_t spt = TMath::Sqrt(mcpt);\r | |
162 | \r | |
163 | // distance to Prim. vertex \r | |
164 | const Double_t* dv = infoMC->GetVDist(); \r | |
165 | \r | |
166 | Bool_t isPrim = TMath::Sqrt(dv[0]*dv[0] + dv[1]*dv[1])<fCutsMC->GetMaxR() && TMath::Abs(dv[2])<fCutsMC->GetMaxVz();\r | |
167 | \r | |
168 | // Check selection cuts\r | |
169 | if (fCutsMC->IsPdgParticle(TMath::Abs(infoMC->GetParticle().GetPdgCode())) == kFALSE) return; \r | |
170 | if (!isPrim) return;\r | |
171 | if (infoRC->GetStatus(1)!=3) return;\r | |
172 | if (!infoRC->GetESDtrack()) return; \r | |
173 | if (infoRC->GetESDtrack()->GetTPCNcls()<fCutsRC->GetMinNClustersTPC()) return;\r | |
174 | if (!infoRC->GetESDtrack()->GetConstrainedParam()) return;\r | |
175 | \r | |
176 | // calculate and set prim. vertex\r | |
177 | fVertex->SetXv( infoMC->GetParticle().Vx() - dv[0] );\r | |
178 | fVertex->SetYv( infoMC->GetParticle().Vy() - dv[1] );\r | |
179 | fVertex->SetZv( infoMC->GetParticle().Vz() - dv[2] );\r | |
180 | \r | |
181 | // calculate track parameters at vertex\r | |
182 | if (infoRC->GetESDtrack()->GetTPCInnerParam())\r | |
183 | {\r | |
184 | if ((track = new AliExternalTrackParam(*infoRC->GetESDtrack()->GetTPCInnerParam())) != 0 )\r | |
185 | {\r | |
186 | Bool_t bStatus = AliTracker::PropagateTrackTo(track,kRadius,infoMC->GetMass(),kMaxStep,kTRUE);\r | |
187 | Bool_t bDCAStatus = track->PropagateToDCA(fVertex,field,kMaxD,dca,cov);\r | |
188 | \r | |
189 | if(bStatus && bDCAStatus) {\r | |
190 | fD0TanSPtInTPC->Fill(tantheta,spt,dca[0]);\r | |
191 | fD1TanSPtInTPC->Fill(tantheta,spt,dca[1]);\r | |
192 | }\r | |
193 | \r | |
194 | delete track;\r | |
195 | }\r | |
196 | }\r | |
197 | \r | |
198 | if(infoRC->GetESDtrack()->GetITSclusters(clusterITS)==0){\r | |
199 | fD0TanSPtB1->Fill(tantheta,spt,dca[0]);\r | |
200 | fD1TanSPtB1->Fill(tantheta,spt,dca[1]);\r | |
201 | }\r | |
202 | fD0TanSPtL1->Fill(tantheta,spt,dca[0]);\r | |
203 | fD1TanSPtL1->Fill(tantheta,spt,dca[1]);\r | |
204 | }\r | |
205 | \r | |
206 | //_____________________________________________________________________________\r | |
207 | Long64_t AliComparisonDCA::Merge(TCollection* list) \r | |
208 | {\r | |
209 | // Merge list of objects (needed by PROOF)\r | |
210 | \r | |
211 | if (!list)\r | |
212 | return 0;\r | |
213 | \r | |
214 | if (list->IsEmpty())\r | |
215 | return 1;\r | |
216 | \r | |
217 | TIterator* iter = list->MakeIterator();\r | |
218 | TObject* obj = 0;\r | |
219 | \r | |
220 | // collection of generated histograms\r | |
221 | Int_t count=0;\r | |
222 | while((obj = iter->Next()) != 0) \r | |
223 | {\r | |
224 | AliComparisonDCA* entry = dynamic_cast<AliComparisonDCA*>(obj);\r | |
225 | if (entry == 0) { \r | |
226 | Error("Add","Attempt to add object of class: %s to a %s",\r | |
227 | obj->ClassName(),this->ClassName());\r | |
228 | return -1;\r | |
229 | }\r | |
230 | \r | |
231 | fD0TanSPtB1->Add(entry->fD0TanSPtB1);\r | |
232 | fD1TanSPtB1->Add(entry->fD1TanSPtB1);\r | |
233 | fD0TanSPtL1->Add(entry->fD0TanSPtL1);\r | |
234 | fD1TanSPtL1->Add(entry->fD1TanSPtL1);\r | |
235 | fD0TanSPtInTPC->Add(entry->fD0TanSPtInTPC);\r | |
236 | fD1TanSPtInTPC->Add(entry->fD1TanSPtInTPC);\r | |
237 | \r | |
238 | count++;\r | |
239 | }\r | |
240 | \r | |
241 | return count;\r | |
242 | }\r | |
243 | \r | |
244 | //_____________________________________________________________________________\r | |
245 | void AliComparisonDCA::Exec(AliMCInfo* infoMC, AliESDRecInfo *infoRC){\r | |
246 | // Process comparison information\r | |
247 | Process(infoMC,infoRC);\r | |
248 | }\r | |
249 | \r | |
250 | //_____________________________________________________________________________\r | |
251 | void AliComparisonDCA::Analyse()\r | |
252 | {\r | |
253 | // Analyse output histograms\r | |
254 | \r | |
255 | AliComparisonDCA * comp=this;\r | |
256 | TGraph2D * gr=0;\r | |
257 | TGraph * gr0=0;\r | |
258 | \r | |
259 | TFile *fp = new TFile("pictures_dca.root","recreate");\r | |
260 | fp->cd();\r | |
261 | \r | |
262 | TCanvas * c = new TCanvas("DCA","DCA resloution");\r | |
263 | c->cd();\r | |
264 | \r | |
265 | // DCA resolution\r | |
266 | gr0 = AliMathBase::MakeStat1D(comp->fD0TanSPtB1,2,5);\r | |
267 | gr0->GetXaxis()->SetTitle("Tan(#theta)");\r | |
268 | gr0->GetYaxis()->SetTitle("#sigmaDCA (cm)");\r | |
269 | gr0->Write("DCAResolTan");\r | |
270 | //\r | |
271 | gr = AliMathBase::MakeStat2D(comp->fD0TanSPtB1,4,2,5); \r | |
272 | gr->GetXaxis()->SetTitle("Tan(#theta)");\r | |
273 | gr->GetYaxis()->SetTitle("#sqrt{p_{t}(GeV/c)}");\r | |
274 | gr->GetYaxis()->SetTitle("#sigmaDCA (cm)");\r | |
275 | gr->GetHistogram()->Write("DCAResolSPTTan");\r | |
276 | \r | |
277 | gPad->Clear();\r | |
278 | gr0->Draw("al*");\r | |
279 | \r | |
280 | fp->Close();\r | |
281 | }\r |