- Adding a new group for macros
[u/mrichter/AliRoot.git] / MUON / MUONRecoCheck.C
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b8dc484b 1/**************************************************************************
48217459 2* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3* *
4* Author: The ALICE Off-line Project. *
5* Contributors are mentioned in the code where appropriate. *
6* *
7* Permission to use, copy, modify and distribute this software and its *
8* documentation strictly for non-commercial purposes is hereby granted *
9* without fee, provided that the above copyright notice appears in all *
10* copies and that both the copyright notice and this permission notice *
11* appear in the supporting documentation. The authors make no claims *
12* about the suitability of this software for any purpose. It is *
13* provided "as is" without express or implied warranty. *
14**************************************************************************/
b8dc484b 15
16// ROOT includes
17#include "TClonesArray.h"
18#include "TH1.h"
b8dc484b 19#include "TFile.h"
a0bfad0e 20#include <TGeoManager.h>
b8dc484b 21
22// STEER includes
23#include "AliRun.h"
24#include "AliHeader.h"
25#include "AliMC.h"
26#include "AliStack.h"
45a05f07 27#include "AliMagFMaps.h"
6b092dfc 28#include "AliTracker.h"
b8dc484b 29
30// MUON includes
b8dc484b 31#include "AliMUONConstants.h"
32#include "AliMUONTrack.h"
33#include "AliMUONRecoCheck.h"
34#include "AliMUONTrackParam.h"
8cde4af5 35#include "AliMUONTrackExtrap.h"
48217459 36#include "AliMUONVTrackStore.h"
b8dc484b 37
38Int_t TrackCheck( Bool_t *compTrack);
39
6b092dfc 40void MUONRecoCheck (Int_t nEvent = 1, char* geoFilename = "geometry.root",
61fed964 41 char * pathSim="./generated/", char * esdFileName="AliESDs.root"){
48217459 42
b8dc484b 43 // Utility macro to check the muon reconstruction. Reconstructed tracks are compared
44 // to reference tracks. The reference tracks are built from AliTrackReference for the
45 // hit in chamber (0..9) and from kinematics (TreeK) for the vertex parameters.
46
b8dc484b 47 Bool_t *compTrack;
48 Bool_t compTrackOK[10];
96ebe67e 49 Int_t nClusterOk = 0;
b8dc484b 50 Int_t testTrack = 0;
51 Int_t iTrack = 0;
48217459 52 AliMUONTrack* trackOK(0x0);
b8dc484b 53 Int_t trackID = 0;
61fed964 54 Double_t sigmaCut = 4.; // 4 sigmas cut
55 Double_t maxChi2 = 999.;
b8dc484b 56 AliMUONTrackParam *trackParam;
b8dc484b 57 Double_t x1,y1,z1,pX1,pY1,pZ1,p1;
58 Double_t x2,y2,z2,pX2,pY2,pZ2,p2;
48217459 59
b8dc484b 60 // File for histograms and histogram booking
61 TFile *histoFile = new TFile("MUONRecoCheck.root", "RECREATE");
48217459 62
b8dc484b 63 TH1F *hReconstructible = new TH1F("hReconstructible"," Nb of reconstructible tracks ",15,-0.5,14.5);
64 TH1F *hReco = new TH1F("hReco"," Nb of reconstructed tracks / evt",15,-0.5,14.5);
96ebe67e 65 TH1F *hNClusterComp = new TH1F("hNClusterComp"," Nb of compatible clusters / track ",15,-0.5,14.5);
b8dc484b 66 TH1F *hTestTrack = new TH1F("hTestTrack"," Reconstruction requirement / track",15,-0.5,14.5);
67 TH1F *hTrackRefID = new TH1F("hTrackRefID"," track reference ID ",100,-0.5,99.5);
68
96ebe67e 69 TH1F *hResMomVertex = new TH1F("hResMomVertex"," delta P vertex (GeV/c)",100,-10.,10);
70 TH1F *hResMomFirstCluster = new TH1F("hResMomFirstCluster"," delta P first cluster (GeV/c)",100,-10.,10);
48217459 71
a0bfad0e 72 // Import TGeo geometry (needed by AliMUONTrackExtrap::ExtrapToVertex)
73 if (!gGeoManager) {
74 TGeoManager::Import(geoFilename);
75 if (!gGeoManager) {
76 Error("MUONmass_ESD", "getting geometry from file %s failed", geoFilename);
77 return;
78 }
79 }
80
45a05f07 81 // set mag field
82 // waiting for mag field in CDB
83 printf("Loading field map...\n");
b97b210c 84 AliMagFMaps* field = new AliMagFMaps("Maps","Maps", 1, 1., 10., AliMagFMaps::k5kG);
45a05f07 85 AliTracker::SetFieldMap(field, kFALSE);
a0bfad0e 86 // set the magnetic field for track extrapolations
87 AliMUONTrackExtrap::SetField(AliTracker::GetFieldMap());
b8dc484b 88
61fed964 89 AliMUONRecoCheck rc(esdFileName, pathSim);
48217459 90
91 Int_t nevents = rc.NumberOfEvents();
b8dc484b 92
93 if (nevents < nEvent) nEvent = nevents;
94
95 Int_t ievent;
96 Int_t nReconstructibleTracks = 0;
97 Int_t nReconstructedTracks = 0;
98 Int_t nReconstructibleTracksCheck = 0;
48217459 99
100 for (ievent=0; ievent<nEvent; ievent++)
101 {
b8dc484b 102 if (!(ievent%10)) printf(" **** event # %d \n",ievent);
b8dc484b 103
48217459 104 AliMUONVTrackStore* trackStore = rc.ReconstructedTracks(ievent);
105 AliMUONVTrackStore* trackRefStore = rc.ReconstructibleTracks(ievent);
b8dc484b 106
48217459 107 hReconstructible->Fill(trackRefStore->GetSize());
108 hReco->Fill(trackStore->GetSize());
109
110 nReconstructibleTracks += trackRefStore->GetSize();
111 nReconstructedTracks += trackStore->GetSize();
112
113 TIter next(trackRefStore->CreateIterator());
114 AliMUONTrack* trackRef;
115
116 while ( ( trackRef = static_cast<AliMUONTrack*>(next()) ) )
117 {
61fed964 118 maxChi2 = 999.;
b8dc484b 119 testTrack = 0;
48217459 120 trackOK = 0x0;
b8dc484b 121 for (Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++)
48217459 122 {
123 compTrackOK[ch] = kFALSE;
b8dc484b 124 }
48217459 125
126 TIter next2(trackStore->CreateIterator());
127 AliMUONTrack* trackReco;
128
129 while ( ( trackReco = static_cast<AliMUONTrack*>(next2()) ) )
130 {
61fed964 131 // check if trackRef is compatible with trackReco
132 if (trackReco->GetNClusters() > 1) {
133
134 // check cluster by cluster if trackReco contain info at each cluster
135 compTrack = trackRef->CompatibleTrack(trackReco,sigmaCut);
136
137 iTrack = TrackCheck(compTrack);
138
139 if (iTrack > testTrack)
140 {
141 nClusterOk = 0;
142 for (Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++)
143 {
144 if (compTrack[ch]) nClusterOk++;
145 compTrackOK[ch] = compTrack[ch];
146 }
147 testTrack = iTrack;
148 trackOK = trackReco;
149 }
150
151 } else {
152
153 // check only parameters at the z position of the first trackRef
154 AliMUONTrackParam *refParam = (AliMUONTrackParam*) trackRef->GetTrackParamAtCluster()->First();
155 AliMUONTrackParam recoParam(*((AliMUONTrackParam*) trackReco->GetTrackParamAtCluster()->First()));
156 AliMUONTrackExtrap::ExtrapToZCov(&recoParam, refParam->GetZ());
157 Double_t chi2;
158 if (refParam->CompatibleTrackParam(recoParam, sigmaCut, chi2)) {
159
160 if (chi2 < maxChi2) {
161 maxChi2 = chi2;
162 trackOK = trackReco;
163 }
164
165 }
166
167 }
48217459 168
48217459 169 }
170
b8dc484b 171 hTestTrack->Fill(testTrack);
172 trackID = trackRef->GetTrackID();
173 hTrackRefID->Fill(trackID);
48217459 174
61fed964 175 if (testTrack == 4 || maxChi2 < 5.*sigmaCut*sigmaCut) { // tracking requirements verified, track is found
48217459 176 nReconstructibleTracksCheck++;
96ebe67e 177 hNClusterComp->Fill(nClusterOk);
48217459 178 trackParam = trackRef->GetTrackParamAtVertex();
179 x1 = trackParam->GetNonBendingCoor();
180 y1 = trackParam->GetBendingCoor();
181 z1 = trackParam->GetZ();
182 pX1 = trackParam->Px();
183 pY1 = trackParam->Py();
184 pZ1 = trackParam->Pz();
185 p1 = trackParam->P();
186
187 // printf(" Ref. track at vertex: x,y,z: %f %f %f px,py,pz,p: %f %f %f %f \n",x1,y1,z1,pX1,pY1,pZ1,p1);
188 trackReco = trackOK;
96ebe67e 189 trackParam = new AliMUONTrackParam(*((AliMUONTrackParam*)(trackReco->GetTrackParamAtCluster()->First())));
690d2205 190 AliMUONTrackExtrap::ExtrapToVertex(trackParam,x1,y1,z1,0.,0.);
48217459 191 x2 = trackParam->GetNonBendingCoor();
192 y2 = trackParam->GetBendingCoor();
193 z2 = trackParam->GetZ();
194 pX2 = trackParam->Px();
195 pY2 = trackParam->Py();
196 pZ2 = trackParam->Pz();
197 p2 = trackParam->P();
198 delete trackParam;
199 // printf(" Reconst. track at vertex: x,y,z: %f %f %f px,py,pz: %f %f %f %f \n",x2,y2,z2,pX2,pY2,pZ2,p2);
200
201 hResMomVertex->Fill(p2-p1);
202
96ebe67e 203 trackParam = (AliMUONTrackParam*) trackRef->GetTrackParamAtCluster()->First();
48217459 204 x1 = trackParam->GetNonBendingCoor();
205 y1 = trackParam->GetBendingCoor();
206 z1 = trackParam->GetZ();
207 pX1 = trackParam->Px();
208 pY1 = trackParam->Py();
209 pZ1 = trackParam->Pz();
210 p1 = trackParam->P();
96ebe67e 211 // printf(" Ref. track at 1st cluster: x,y,z: %f %f %f px,py,pz: %f %f %f \n",x1,y1,z1,pX1,pY1,pZ1);
212 trackParam = (AliMUONTrackParam*) trackOK->GetTrackParamAtCluster()->First();
48217459 213 x2 = trackParam->GetNonBendingCoor();
214 y2 = trackParam->GetBendingCoor();
215 z2 = trackParam->GetZ();
216 pX2 = trackParam->Px();
217 pY2 = trackParam->Py();
218 pZ2 = trackParam->Pz();
219 p2 = trackParam->P();
96ebe67e 220 // printf(" Reconst. track at 1st cluster: x,y,z: %f %f %f px,py,pz: %f %f %f \n",x2,y2,z2,pX2,pY2,pZ2);
48217459 221
96ebe67e 222 hResMomFirstCluster->Fill(p2-p1);
b8dc484b 223
224 }
225 } // end loop track ref.
b8dc484b 226
48217459 227 } // end loop on event
228
b8dc484b 229 printf(" nb of reconstructible tracks: %d \n", nReconstructibleTracks);
230 printf(" nb of reconstructed tracks: %d \n", nReconstructedTracks);
231 printf(" nb of reconstructible tracks which are reconstructed: %d \n", nReconstructibleTracksCheck);
232
233 histoFile->Write();
234 histoFile->Close();
235}
236
237
238Int_t TrackCheck( Bool_t *compTrack)
239{
240 // Apply reconstruction requirements
241 // Return number of validated conditions
242 // If all the tests are verified then TrackCheck = 4 (good track)
243 Int_t iTrack = 0;
96ebe67e 244 Int_t nCompClustersInLastStations = 0;
b8dc484b 245
246 // apply reconstruction requirements
96ebe67e 247 if (compTrack[0] || compTrack[1]) iTrack++; // at least one compatible cluster in st. 0
248 if (compTrack[2] || compTrack[3]) iTrack++; // at least one compatible cluster in st. 1
249 if (compTrack[4] || compTrack[5]) iTrack++; // at least one compatible cluster in st. 2
b8dc484b 250 for (Int_t ch = 6; ch < AliMUONConstants::NTrackingCh(); ch++) {
96ebe67e 251 if (compTrack[ch]) nCompClustersInLastStations++;
b8dc484b 252 }
96ebe67e 253 if (nCompClustersInLastStations > 2) iTrack++; // at least 3 compatible clusters in st. 3 & 4
b8dc484b 254
255 return iTrack;
48217459 256
b8dc484b 257}
258