1 #if !defined(__CINT__) || defined(__MAKECINT__)
3 #include "TGeoManager.h"
4 #include "TInterpreter.h"
5 #include "TClassTable.h"
11 #include "AliGenPythiaEventHeader.h"
12 #include "AliTracker.h"
13 #include "AliHeader.h"
14 #include "AliITSLoader.h"
15 #include "AliITSsegmentationSPD.h"
16 #include "AliVertexerTracks.h"
17 #include "AliCDBManager.h"
18 #include "AliGeomManager.h"
19 #include "AliGRPManager.h"
20 #include "AliITSDetTypeRec.h"
21 #include "AliITSVertexer3D.h"
22 #include "AliITSVertexerZ.h"
23 #include "AliESDVertex.h"
24 #include "AliESDEvent.h"
26 #include "AliRunLoader.h"
27 #include "AliGenEventHeader.h"
33 Bool_t DoVerticesSPD(Int_t pileupalgo=1, Int_t optdebug=0){
35 TFile *fint = new TFile("VertexSPD.root","recreate");
36 TNtuple *nt = new TNtuple("ntvert","vertices","xtrue:ytrue:ztrue:zZ:zdiffZ:zerrZ:ntrksZ:x3D:xdiff3D:xerr3D:y3D:ydiff3D:yerr3D:z3D:zdiff3D:zerr3D:ntrks3D:dndy:ntrklets:nrp1:ptyp:is3D:isTriggered");
38 if (gClassTable->GetID("AliRun") < 0) {
39 gInterpreter->ExecuteMacro("loadlibs.C");
42 AliCDBManager* man = AliCDBManager::Instance();
43 if (!man->IsDefaultStorageSet()) {
44 printf("Setting a local default storage and run number 0\n");
45 man->SetDefaultStorage("local://$ALICE_ROOT/OCDB");
46 // man->SetSpecificStorage("GRP/GRP/Data",Form("local://%s",gSystem->pwd()));
50 printf("Using deafult storage \n");
55 AliGeomManager::LoadGeometry("geometry.root");
57 AliGeomManager::ApplyAlignObjsFromCDB("ITS");
59 AliRunLoader* runLoader = AliRunLoader::Open("galice.root");
61 Error("DoVertices", "getting run loader from file %s failed",
65 runLoader->LoadgAlice();
66 gAlice = runLoader->GetAliRun();
68 Error("DoVertices", "no galice object found");
71 runLoader->LoadKinematics();
72 runLoader->LoadHeader();
73 AliITSLoader* ITSloader = (AliITSLoader*) runLoader->GetLoader("ITSLoader");
74 ITSloader->LoadRecPoints("read");
76 Int_t totev=runLoader->GetNumberOfEvents();
77 if(optdebug) printf("Number of events= %d\n",totev);
79 TFile* esdFile = TFile::Open("AliESDs.root");
80 if (!esdFile || !esdFile->IsOpen()) {
81 printf("Error in opening ESD file");
85 AliESDEvent * esd = new AliESDEvent;
86 TTree* tree = (TTree*) esdFile->Get("esdTree");
88 printf("Error: no ESD tree found");
91 esd->ReadFromTree(tree);
92 AliGRPManager * grpMan=new AliGRPManager();
93 grpMan->ReadGRPEntry();
94 grpMan->SetMagField();
95 printf("Magnetic field set to %f T\n",AliTracker::GetBz()/10.);
97 AliITSDetTypeRec* detTypeRec = new AliITSDetTypeRec();
98 AliITSsegmentation* seg = new AliITSsegmentationSPD();
99 detTypeRec->SetSegmentationModel(0,seg);
101 Double_t xnom=0.,ynom=0.;
102 AliITSVertexerZ *vertz = new AliITSVertexerZ(xnom,ynom);
103 vertz->Init("default");
104 AliITSVertexer3D *vert3d = new AliITSVertexer3D();
105 vert3d->Init("default");
106 vert3d->SetWideFiducialRegion(40.,1.);
107 vert3d->SetPileupAlgo(pileupalgo);
108 vert3d->PrintStatus();
109 vertz->SetDetTypeRec(detTypeRec);
110 vert3d->SetDetTypeRec(detTypeRec);
112 /* uncomment these lines to use diamond constrain */
113 // Double_t posdiam[3]={0.03,0.1,0.};
114 // Double_t sigdiam[3]={0.01,0.01,10.0};
115 // AliESDVertex* diam=new AliESDVertex(posdiam,sigdiam);
116 // vertz->SetVtxStart(diam);
117 // vert3d->SetVtxStart(diam);
118 /* end lines to be uncommented to use diamond constrain */
120 Int_t goodz=0,good3d=0;
122 ULong64_t spdFO = (1 << 14);
123 ULong64_t v0left = (1 << 11);
124 ULong64_t v0right = (1 << 12);
126 for (Int_t iEvent = 0; iEvent < totev; iEvent++) {
128 runLoader->GetEvent(iEvent);
129 runLoader->GetHeader()->GenEventHeader()->PrimaryVertex(mcVertex);
130 AliGenPythiaEventHeader *evh=(AliGenPythiaEventHeader*)runLoader->GetHeader()->GenEventHeader();
131 Int_t ptype = evh->ProcessType();
133 printf("==============================================================\n");
134 printf("\nEvent: %d ---- Process Type = %d \n",iEvent,ptype);
137 AliStack* stack = runLoader->Stack();
138 TTree *treek=(TTree*)runLoader->TreeK();
139 Int_t npart = (Int_t)treek->GetEntries();
140 if(optdebug) printf("particles %d\n",npart);
142 Double_t dNchdy = 0.;
144 // loop on particles to get generated dN/dy
145 for(Int_t iPart=0; iPart<npart; iPart++) {
146 if(!stack->IsPhysicalPrimary(iPart)) continue;
147 TParticle* part = (TParticle*)stack->Particle(iPart);
148 if(part->GetPDG()->Charge() == 0) continue;
149 Double_t eta=part->Eta();
151 if(TMath::Abs(eta)<1.5) dNchdy+=1.;
153 if(optdebug) printf(" dNch/dy = %f\n",dNchdy);
155 tree->GetEvent(iEvent);
157 TTree* cltree = ITSloader->TreeR();
158 ULong64_t triggerMask=esd->GetTriggerMask();
159 // MB1: SPDFO || V0L || V0R
160 Bool_t eventTriggered = (triggerMask & spdFO || ((triggerMask & v0left) || (triggerMask & v0right)));
161 AliESDVertex* vtxz = vertz->FindVertexForCurrentEvent(cltree);
162 AliESDVertex* vtx3d = vert3d->FindVertexForCurrentEvent(cltree);
163 AliMultiplicity *alimult = vert3d->GetMultiplicity();
167 ntrklets=alimult->GetNumberOfTracklets() ;
168 nrecp1=ntrklets+alimult->GetNumberOfSingleClusters();
173 TDirectory *current = gDirectory;
179 Double_t zdiffz = 0.;
184 ntrkz = vtxz->GetNContributors();
187 zresz =vtxz->GetZRes(); // microns
188 zdiffz = 10000.*(zz-mcVertex[2]); // microns
192 Double_t xerr3d = 0.;
193 Double_t xdiff3d = 0.;
196 Double_t yerr3d = 0.;
197 Double_t ydiff3d = 0.;
200 Double_t zerr3d = 0.;
201 Double_t zdiff3d = 0.;
207 if(vtx3d->IsFromVertexer3D()) is3d=kTRUE;
208 ntrk3d = vtx3d->GetNContributors();
209 if(is3d && ntrk3d>0)good3d++;
210 x3d = vtx3d->GetXv();
211 xerr3d=vtx3d->GetXRes();
212 xdiff3d = 10000.*(x3d-mcVertex[0]); // microns
214 y3d = vtx3d->GetYv();
215 yerr3d=vtx3d->GetYRes();
216 ydiff3d = 10000.*(y3d-mcVertex[1]); // microns
218 z3d = vtx3d->GetZv();
219 zerr3d=vtx3d->GetZRes();
220 zdiff3d = 10000.*(z3d-mcVertex[2]); // microns
224 xnt[0]=mcVertex[0];//x
225 xnt[1]=mcVertex[1];//y
226 xnt[2]=mcVertex[2];//z
245 xnt[18]=float(ntrklets);
246 xnt[19]=float(nrecp1);
247 xnt[20]=float(ptype);
249 xnt[22]=float(eventTriggered);
254 printf("\nVertexerZ: \tz(cm)=%9.5f \tTracklets=%d \tztrue(cm)=%9.5f \tzdiff(um)=%8.2f\n",zz,ntrkz,mcVertex[2],zdiffz);
255 printf("Vertexer3D: \tz(cm)=%9.5f \tTracklets=%d \tztrue(cm)=%9.5f \tzdiff(um)=%8.2f\n",z3d,ntrk3d,mcVertex[2],zdiff3d);
264 printf("***********************************************\n");
265 printf("Number of Z vertices found= %d\n",goodz);
266 printf("efficiency=%f\n",float(goodz)/float(totev));
267 printf("Number of 3D vertices found= %d\n",good3d);
268 printf("efficiency=%f\n",float(good3d)/float(totev));