Correct sign for calculated b_y (outside measured region).
[u/mrichter/AliRoot.git] / TPC / AliTPCtrackingParamDB.C
CommitLineData
887eddf8 1/****************************************************************************
2 * This macro is used to create a DataBase for the TPC tracking *
3 * parameterization. *
4 * 1) the function CreateAllGeantTracks gives all tracks at the 1st hit of *
5 * the TPC *
6 * 2) the function TrackCompare compares them with track found by the *
7 * Kalman filter for the same event and computes efficiency and *
8 * resolution on the track parameters for the Kalman filter. *
9 * 3) the function BuildDataBase calls many functions of AliTPCtrackerParam:*
10 * - merge results from TrackCompare for many events and compute *
11 * average efficiency. *
12 * - analyze the pulls of the covariance matrix *
13 * - analyze the dE/dx *
14 * - regularize the covariance matrix as a function of the momentum *
15 * - write all the informations and the trees with regularized cov. *
16 * matrices in the DataBase file. *
17 * *
18 * Origin: A.Dainese, Padova, andrea.dainese@pd,infn.it *
19 * *
20 ****************************************************************************/
21
22#ifndef __CINT__
b2bca9d4 23#include "Riostream.h"
887eddf8 24#include <TFile.h>
a654e257 25#include <TTree.h>
887eddf8 26#include <TStopwatch.h>
27#include <TObject.h>
28#include "alles.h"
29#include "AliRun.h"
30#include "AliHeader.h"
31#include "AliGenEventHeader.h"
32#include "AliMagF.h"
33#include "AliModule.h"
34#include "AliArrayI.h"
35#include "AliDigits.h"
36#include "AliITS.h"
37#include "AliTPC.h"
38#include "AliITSgeom.h"
39#include "AliITSRecPoint.h"
40#include "AliITSclusterV2.h"
41#include "AliITSsimulationFastPoints.h"
42#include "AliITStrackerV2.h"
43#include "AliKalmanTrack.h"
44#include "AliTPCtrackerParam.h"
a654e257 45#include "AliTracker.h"
46#include "AliESD.h"
47#include "AliRun.h"
48#include "AliRunLoader.h"
887eddf8 49#endif
50
a654e257 51Int_t TPCParamTracks(const Int_t coll=1,Int_t firstEvent=0,Int_t lastEvent=0);
52void CreateAllGeantTracks(const Int_t coll=1,Int_t nev=1);
b2bca9d4 53void TrackCompare(const Int_t coll,const Double_t Bfield,Int_t n);
887eddf8 54void BuildDataBase(const Int_t coll,const Double_t Bfield);
55
887eddf8 56//_____________________________________________________________________________
a654e257 57Int_t TPCParamTracks(const Int_t coll,Int_t firstEvent,Int_t lastEvent) {
887eddf8 58//
59// Ordinary TPC tracking parameterization
60//
887eddf8 61
a654e257 62 /**** Initialization of the NewIO *******/
63
64 if (gAlice) {
65 delete gAlice->GetRunLoader();
66 delete gAlice;
67 gAlice=0;
68 }
69
70 AliRunLoader *rl = AliRunLoader::Open("galice.root");
71 if (rl == 0x0) {
72 cerr<<"Can not open session"<<endl;
73 return;
74 }
75 Int_t retval = rl->LoadgAlice();
76 if (retval) {
77 cerr<<"LoadgAlice returned error"<<endl;
78 delete rl;
79 return;
80 }
81 retval = rl->LoadHeader();
82 if (retval) {
83 cerr<<"LoadHeader returned error"<<endl;
84 delete rl;
85 return;
86 }
87 gAlice=rl->GetAliRun();
88
89
90 TDatabasePDG *DataBase = TDatabasePDG::Instance();
91
92 // Get field from galice.root
93 AliMagF *fiel = (AliMagF*)gAlice->Field();
94 Double_t fieval=TMath::Abs((Double_t)fiel->SolenoidField()/10.);
95 // Set the conversion constant between curvature and Pt
96 AliTracker::SetFieldMap(fiel,kTRUE);
97
98 /**** The TPC corner ********************/
99
100 AliTPCtrackerParam tpcTrackerPar(coll,fieval);
101 tpcTrackerPar.Init();
102
103 /***** The TREE is born *****/
104
105 TTree *esdTree=new TTree("esdTree","Tree with ESD objects");
106 AliESD *event=0;
107 esdTree->Branch("ESD","AliESD",&event);
108
109 if(firstEvent>rl->GetNumberOfEvents()) firstEvent=rl->GetNumberOfEvents()-1;
110 if(lastEvent>rl->GetNumberOfEvents()) lastEvent=rl->GetNumberOfEvents()-1;
111 cout<<" Number of events: "<<1+lastEvent-firstEvent<<endl;
112
113 //<----------------------------------The Loop over events begins
114 TStopwatch timer;
115 Int_t trc;
116 for(Int_t i=firstEvent; i<=lastEvent; i++) {
117
118 cerr<<" Processing event number : "<<i<<endl;
119 AliESD *event = new AliESD();
120 event->SetRunNumber(gAlice->GetRunNumber());
121 event->SetEventNumber(i);
122 event->SetMagneticField(gAlice->Field()->SolenoidField());
123 rl->GetEvent(i);
124
125 if ( (trc=tpcTrackerPar.BuildTPCtracks(event)) ) {
126 printf("exiting tracker with code %d in event %d\n",trc,i);
127 esdTree->Fill(); delete event;
128 continue;
129 }
130
131 esdTree->Fill();
132 delete event;
133
134 }//<-----------------------------------The Loop over events ends here
135 timer.Stop(); timer.Print();
136
137 // The AliESDs.root is born
138 TFile *ef = TFile::Open("AliESDs.root","RECREATE");
139 if (!ef || !ef->IsOpen()) {cerr<<"Can't open AliESDs.root !\n"; return;}
140
141 esdTree->Write(); //Write the TREE and close everything
142 delete esdTree;
143 ef->Close();
144
145 delete rl;
146
147 return;
887eddf8 148}
149//_____________________________________________________________________________
a654e257 150void CreateAllGeantTracks(const Int_t coll,Int_t nev) {
887eddf8 151//
152// Get all tracks at TPC 1st hit w/o selection and smearing
153//
154 cerr<<"\n*******************************************************************\n";
155
156 const Char_t *name="CreateAllGeantTracks";
157 cerr<<'\n'<<name<<"...\n";
158 gBenchmark->Start(name);
159
160 TFile *outfile=TFile::Open(outname,"recreate");
161 TFile *infile =TFile::Open(galice);
162
b2bca9d4 163 AliTPCtrackerParam tracker(coll,Bfield,n);
887eddf8 164 tracker.AllGeantTracks(); // this is to switch-off selection and smearing
b2bca9d4 165 tracker.BuildTPCtracks(infile,outfile);
887eddf8 166
167 delete gAlice; gAlice=0;
168
169 infile->Close();
170 outfile->Close();
171
172 gBenchmark->Stop(name);
173 gBenchmark->Show(name);
174
175 return;
176}
177//_____________________________________________________________________________
b2bca9d4 178void TrackCompare(const Int_t coll,const Double_t Bfield,Int_t n) {
887eddf8 179//
180// Compare Kalman tracks with tracks at TPC 1st hit
181//
182 cerr<<"\n*******************************************************************\n";
183
184 const Char_t *name="TrackCompare";
185 cerr<<'\n'<<name<<"...\n";
186 gBenchmark->Start(name);
187
b2bca9d4 188 AliTPCtrackerParam tracker(coll,Bfield,n);
887eddf8 189 tracker.CompareTPCtracks();
190
191 gBenchmark->Stop(name);
192 gBenchmark->Show(name);
193
194 return;
195}
196//_____________________________________________________________________________
197void BuildDataBase(const Int_t coll,const Double_t Bfield) {
198//
199//
200//
201 cerr<<"\n*******************************************************************\n";
202
203 AliTPCtrackerParam tracker(coll,Bfield);
204
205 // Merge files with cov. matrix and compute average efficiencies
206 cerr<<"\n --- Merging Events ---\n\n";
207 tracker.MergeEvents(1,5);
208
209 // Compute the pulls for pions, kaons, electrons
210 cerr<<"\n --- Analyzing Pulls ---\n\n";
211 tracker.AnalyzePulls("pulls.root");
212
213 // Draw pulls and efficiencies
214 tracker.DrawPulls("CovMatrixDB_PbPb6000_B0.4T.root",211,0);
215 tracker.DrawEffs("CovMatrixDB_PbPb6000_B0.4T.root",13);
216
217 // Regularize the covariance matrix
218 tracker.RegularizeCovMatrix("regPi.root",211);
219
220 // Analyze the dE/dx
221 tracker.AnalyzedEdx("dEdxPi.root",211);
222
223
224 // Put everything together and create the DB file
225 tracker.MakeDataBase();
226
227 return;
228}
229
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