Extacting the OCDB in a separate module. The detectors have write permission in the...
[u/mrichter/AliRoot.git] / ITS / DoVerticesSPD.C
CommitLineData
f5826889 1#if !defined(__CINT__) || defined(__MAKECINT__)
2#include "TFile.h"
3#include "TGeoManager.h"
4#include "TInterpreter.h"
5#include "TClassTable.h"
6#include "TNtuple.h"
7#include "TTree.h"
8#include "TArrayF.h"
9#include "TParticle.h"
10#include "AliESD.h"
11#include "AliGenPythiaEventHeader.h"
12#include "AliTracker.h"
13#include "AliHeader.h"
14#include "AliITSLoader.h"
15#include "AliVertexerTracks.h"
16#include "AliCDBManager.h"
17#include "AliGeomManager.h"
fdc48e5f 18#include "AliITSDetTypeRec.h"
f5826889 19#include "AliITSVertexer3D.h"
20#include "AliITSVertexerZ.h"
21#include "AliESDVertex.h"
22#include "AliRun.h"
23#include "AliRunLoader.h"
24#include "AliGenEventHeader.h"
25#include "AliStack.h"
26#endif
27
28/* $Id$ */
29
30Bool_t DoVerticesSPD(Int_t optdebug=1){
792b611a 31
f5826889 32 TFile *fint = new TFile("VertexSPD.root","recreate");
792b611a 33 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");
f5826889 34
35 if (gClassTable->GetID("AliRun") < 0) {
36 gInterpreter->ExecuteMacro("loadlibs.C");
37 }
38 // Set OCDB if needed
39 AliCDBManager* man = AliCDBManager::Instance();
40 if (!man->IsDefaultStorageSet()) {
41 printf("Setting a local default storage and run number 0\n");
162637e4 42 man->SetDefaultStorage("local://$ALICE_ROOT/OCDB");
f5826889 43 man->SetRun(0);
44 }
45 else {
46 printf("Using deafult storage \n");
47 }
48
49 // retrives geometry
50 if(!gGeoManager){
51 AliGeomManager::LoadGeometry("geometry.root");
52 }
53
54 AliRunLoader* runLoader = AliRunLoader::Open("galice.root");
55 if (!runLoader) {
56 Error("DoVertices", "getting run loader from file %s failed",
57 "galice.root");
58 return kFALSE;
59 }
60 runLoader->LoadgAlice();
61 gAlice = runLoader->GetAliRun();
62 if (!gAlice) {
63 Error("DoVertices", "no galice object found");
64 return kFALSE;
65 }
66 runLoader->LoadKinematics();
67 runLoader->LoadHeader();
68 AliITSLoader* ITSloader = (AliITSLoader*) runLoader->GetLoader("ITSLoader");
69 ITSloader->LoadRecPoints("read");
70
71 AliMagF * magf = gAlice->Field();
72 AliTracker::SetFieldMap(magf,kTRUE);
73 if(optdebug) printf("MagneticField=%f\n",AliTracker::GetBz());
74
75 Int_t totev=runLoader->GetNumberOfEvents();
76 if(optdebug) printf("Number of events= %d\n",totev);
77
fdc48e5f 78 AliITSDetTypeRec* detTypeRec = new AliITSDetTypeRec();
79
f5826889 80 Double_t xnom=0.,ynom=0.;
308c2f7c 81 AliITSVertexerZ *vertz = new AliITSVertexerZ(xnom,ynom);
82 vertz->Init("default");
83 AliITSVertexer3D *vert3d = new AliITSVertexer3D();
84 vert3d->Init("default");
792b611a 85 vert3d->SetWideFiducialRegion(40.,1.);
86 vert3d->PrintStatus();
fdc48e5f 87 vertz->SetDetTypeRec(detTypeRec);
88 vert3d->SetDetTypeRec(detTypeRec);
ecce5370 89
90 /* uncomment these lines to use diamond constrain */
91// Double_t posdiam[3]={0.03,0.1,0.};
92// Double_t sigdiam[3]={0.01,0.01,10.0};
93// AliESDVertex* diam=new AliESDVertex(posdiam,sigdiam);
94// vertz->SetVtxStart(diam);
95// vert3d->SetVtxStart(diam);
96 /* end lines to be uncommented to use diamond constrain */
f5826889 97
98 Int_t goodz=0,good3d=0;
99
100 for (Int_t iEvent = 0; iEvent < totev; iEvent++) {
101 TArrayF mcVertex(3);
102 runLoader->GetEvent(iEvent);
103 runLoader->GetHeader()->GenEventHeader()->PrimaryVertex(mcVertex);
104 AliGenPythiaEventHeader *evh=(AliGenPythiaEventHeader*)runLoader->GetHeader()->GenEventHeader();
105 Int_t ptype = evh->ProcessType();
106 if(optdebug){
107 printf("==============================================================\n");
108 printf("\nEvent: %d ---- Process Type = %d \n",iEvent,ptype);
109 }
110
111 AliStack* stack = runLoader->Stack();
112 TTree *treek=(TTree*)runLoader->TreeK();
113 Int_t npart = (Int_t)treek->GetEntries();
114 if(optdebug) printf("particles %d\n",npart);
115
116 Double_t dNchdy = 0.;
117
ecce5370 118 // loop on particles to get generated dN/dy
119 for(Int_t iPart=0; iPart<npart; iPart++) {
120 if(!stack->IsPhysicalPrimary(iPart)) continue;
121 TParticle* part = (TParticle*)stack->Particle(iPart);
122 if(part->GetPDG()->Charge() == 0) continue;
123 Double_t eta=part->Eta();
f5826889 124
ecce5370 125 if(TMath::Abs(eta)<1.5) dNchdy+=1.;
f5826889 126 }
127 if(optdebug) printf(" dNch/dy = %f\n",dNchdy);
128
308c2f7c 129 TTree* cltree = ITSloader->TreeR();
130
131 AliESDVertex* vtxz = vertz->FindVertexForCurrentEvent(cltree);
ecce5370 132 AliESDVertex* vtx3d = vert3d->FindVertexForCurrentEvent(cltree);
ecce5370 133 AliMultiplicity *alimult = vert3d->GetMultiplicity();
792b611a 134 Int_t ntrklets=0;
135 Int_t nrecp1=0;
136 if(alimult){
137 ntrklets=alimult->GetNumberOfTracklets() ;
138 nrecp1=ntrklets+alimult->GetNumberOfSingleClusters();
f5826889 139 }
792b611a 140 TString tit=vtx3d->GetTitle();
141 Bool_t is3d=kFALSE;
142 if(tit.Contains("3D")) is3d=kTRUE;
143
ecce5370 144
f5826889 145
146 TDirectory *current = gDirectory;
147 fint->cd();
792b611a 148 Float_t xnt[22];
f5826889 149
150 Double_t zz = 0.;
151 Double_t zresz = 0.;
152 Double_t zdiffz = 0.;
153
154 Int_t ntrkz = 0;
155 if(vtxz){
156
157 ntrkz = vtxz->GetNContributors();
158 if(ntrkz>0)goodz++;
159 zz=vtxz->GetZv();
160 zresz =vtxz->GetZRes(); // microns
161 zdiffz = 10000.*(zz-mcVertex[2]); // microns
162 }
163
164 Double_t x3d = 0.;
165 Double_t xerr3d = 0.;
166 Double_t xdiff3d = 0.;
167
168 Double_t y3d = 0.;
169 Double_t yerr3d = 0.;
170 Double_t ydiff3d = 0.;
171
172 Double_t z3d = 0.;
173 Double_t zerr3d = 0.;
174 Double_t zdiff3d = 0.;
175
176 Int_t ntrk3d = 0;
177 if(vtx3d){
178
179 ntrk3d = vtx3d->GetNContributors();
792b611a 180 if(is3d && ntrk3d>0)good3d++;
f5826889 181 x3d = vtx3d->GetXv();
182 xerr3d=vtx3d->GetXRes();
183 xdiff3d = 10000.*(x3d-mcVertex[0]); // microns
184
185 y3d = vtx3d->GetYv();
186 yerr3d=vtx3d->GetYRes();
187 ydiff3d = 10000.*(y3d-mcVertex[1]); // microns
188
189 z3d = vtx3d->GetZv();
190 zerr3d=vtx3d->GetZRes();
191 zdiff3d = 10000.*(z3d-mcVertex[2]); // microns
192
193 }
194
195 xnt[0]=mcVertex[0];//x
196 xnt[1]=mcVertex[1];//y
197 xnt[2]=mcVertex[2];//z
198
199 xnt[3]=zz;
200 xnt[4]=zdiffz;
201 xnt[5]=zresz;
202 xnt[6]=ntrkz;
203
204 xnt[7]=x3d;
205 xnt[8]=xdiff3d;
206 xnt[9]=xerr3d;
8686a665 207 xnt[10]=y3d;
f5826889 208 xnt[11]=ydiff3d;
209 xnt[12]=yerr3d;
210 xnt[13]=z3d;
211 xnt[14]=zdiff3d;
212 xnt[15]=zerr3d;
213 xnt[16]=ntrk3d;
214
215 xnt[17]=dNchdy;
216 xnt[18]=float(ntrklets);
217 xnt[19]=float(nrecp1);
218 xnt[20]=float(ptype);
792b611a 219 xnt[21]=float(is3d);
f5826889 220 nt->Fill(xnt);
221 current->cd();
222
223 if(optdebug){
224 printf("\nVertexerZ: \tz(cm)=%9.5f \tTracklets=%d \tztrue(cm)=%9.5f \tzdiff(um)=%8.2f\n",zz,ntrkz,mcVertex[2],zdiffz);
225 printf("Vertexer3D: \tz(cm)=%9.5f \tTracklets=%d \tztrue(cm)=%9.5f \tzdiff(um)=%8.2f\n",z3d,ntrk3d,mcVertex[2],zdiff3d);
226 }
227
228 }
229 fint->cd();
230 nt->Write();
231 fint->Close();
232 delete fint;
233 if(optdebug){
234 printf("***********************************************\n");
235 printf("Number of Z vertices found= %d\n",goodz);
236 printf("efficiency=%f\n",float(goodz)/float(totev));
237 printf("Number of 3D vertices found= %d\n",good3d);
238 printf("efficiency=%f\n",float(good3d)/float(totev));
239 }
240 return kTRUE;
241}