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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 | |
37 | #include "AliMUONVTrackStore.h" | |
b8dc484b | 38 | |
39 | Int_t TrackCheck( Bool_t *compTrack); | |
40 | ||
6b092dfc | 41 | void MUONRecoCheck (Int_t nEvent = 1, char* geoFilename = "geometry.root", |
42 | char * filenameSim="galice_sim.root", char * filename="galice.root"){ | |
48217459 | 43 | |
b8dc484b | 44 | // Utility macro to check the muon reconstruction. Reconstructed tracks are compared |
45 | // to reference tracks. The reference tracks are built from AliTrackReference for the | |
46 | // hit in chamber (0..9) and from kinematics (TreeK) for the vertex parameters. | |
47 | ||
b8dc484b | 48 | Bool_t *compTrack; |
49 | Bool_t compTrackOK[10]; | |
50 | Int_t nHitOK = 0; | |
51 | Int_t testTrack = 0; | |
52 | Int_t iTrack = 0; | |
48217459 | 53 | AliMUONTrack* trackOK(0x0); |
b8dc484b | 54 | Int_t trackID = 0; |
55 | Double_t sigma2Cut = 16; // 4 sigmas cut, sigma2Cut = 4*4 | |
56 | AliMUONTrackParam *trackParam; | |
57 | TClonesArray *trackParamAtHit; | |
58 | Double_t x1,y1,z1,pX1,pY1,pZ1,p1; | |
59 | Double_t x2,y2,z2,pX2,pY2,pZ2,p2; | |
48217459 | 60 | |
b8dc484b | 61 | // File for histograms and histogram booking |
62 | TFile *histoFile = new TFile("MUONRecoCheck.root", "RECREATE"); | |
48217459 | 63 | |
b8dc484b | 64 | TH1F *hReconstructible = new TH1F("hReconstructible"," Nb of reconstructible tracks ",15,-0.5,14.5); |
65 | TH1F *hReco = new TH1F("hReco"," Nb of reconstructed tracks / evt",15,-0.5,14.5); | |
66 | TH1F *hNHitComp = new TH1F("hNHitComp"," Nb of compatible hits / track ",15,-0.5,14.5); | |
67 | TH1F *hTestTrack = new TH1F("hTestTrack"," Reconstruction requirement / track",15,-0.5,14.5); | |
68 | TH1F *hTrackRefID = new TH1F("hTrackRefID"," track reference ID ",100,-0.5,99.5); | |
69 | ||
70 | TH1F *hResMomVertex = new TH1F("hMomVertex"," delta P vertex (GeV/c)",100,-10.,10); | |
71 | TH1F *hResMomFirstHit = new TH1F("hMomFirstHit"," delta P first hit (GeV/c)",100,-10.,10); | |
48217459 | 72 | |
a0bfad0e | 73 | // Import TGeo geometry (needed by AliMUONTrackExtrap::ExtrapToVertex) |
74 | if (!gGeoManager) { | |
75 | TGeoManager::Import(geoFilename); | |
76 | if (!gGeoManager) { | |
77 | Error("MUONmass_ESD", "getting geometry from file %s failed", geoFilename); | |
78 | return; | |
79 | } | |
80 | } | |
81 | ||
45a05f07 | 82 | // set mag field |
83 | // waiting for mag field in CDB | |
84 | printf("Loading field map...\n"); | |
b97b210c | 85 | AliMagFMaps* field = new AliMagFMaps("Maps","Maps", 1, 1., 10., AliMagFMaps::k5kG); |
45a05f07 | 86 | AliTracker::SetFieldMap(field, kFALSE); |
a0bfad0e | 87 | // set the magnetic field for track extrapolations |
88 | AliMUONTrackExtrap::SetField(AliTracker::GetFieldMap()); | |
b8dc484b | 89 | |
48217459 | 90 | AliMUONRecoCheck rc(filename,filenameSim); |
91 | ||
92 | Int_t nevents = rc.NumberOfEvents(); | |
b8dc484b | 93 | |
94 | if (nevents < nEvent) nEvent = nevents; | |
95 | ||
96 | Int_t ievent; | |
97 | Int_t nReconstructibleTracks = 0; | |
98 | Int_t nReconstructedTracks = 0; | |
99 | Int_t nReconstructibleTracksCheck = 0; | |
48217459 | 100 | |
101 | for (ievent=0; ievent<nEvent; ievent++) | |
102 | { | |
b8dc484b | 103 | if (!(ievent%10)) printf(" **** event # %d \n",ievent); |
b8dc484b | 104 | |
48217459 | 105 | AliMUONVTrackStore* trackStore = rc.ReconstructedTracks(ievent); |
106 | AliMUONVTrackStore* trackRefStore = rc.ReconstructibleTracks(ievent); | |
b8dc484b | 107 | |
48217459 | 108 | hReconstructible->Fill(trackRefStore->GetSize()); |
109 | hReco->Fill(trackStore->GetSize()); | |
110 | ||
111 | nReconstructibleTracks += trackRefStore->GetSize(); | |
112 | nReconstructedTracks += trackStore->GetSize(); | |
113 | ||
114 | TIter next(trackRefStore->CreateIterator()); | |
115 | AliMUONTrack* trackRef; | |
116 | ||
117 | while ( ( trackRef = static_cast<AliMUONTrack*>(next()) ) ) | |
118 | { | |
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 | { | |
131 | // check if trackRef is compatible with trackReco | |
132 | compTrack = trackRef->CompatibleTrack(trackReco,sigma2Cut); | |
133 | ||
134 | iTrack = TrackCheck(compTrack); | |
135 | ||
136 | if (iTrack > testTrack) | |
137 | { | |
138 | nHitOK = 0; | |
139 | for (Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++) | |
140 | { | |
141 | if (compTrack[ch]) nHitOK++; | |
142 | compTrackOK[ch] = compTrack[ch]; | |
143 | } | |
144 | testTrack = iTrack; | |
145 | trackOK = trackReco; | |
146 | } | |
147 | } | |
148 | ||
b8dc484b | 149 | hTestTrack->Fill(testTrack); |
150 | trackID = trackRef->GetTrackID(); | |
151 | hTrackRefID->Fill(trackID); | |
48217459 | 152 | |
b8dc484b | 153 | if (testTrack == 4) { // tracking requirements verified, track is found |
48217459 | 154 | nReconstructibleTracksCheck++; |
155 | hNHitComp->Fill(nHitOK); | |
156 | trackParam = trackRef->GetTrackParamAtVertex(); | |
157 | x1 = trackParam->GetNonBendingCoor(); | |
158 | y1 = trackParam->GetBendingCoor(); | |
159 | z1 = trackParam->GetZ(); | |
160 | pX1 = trackParam->Px(); | |
161 | pY1 = trackParam->Py(); | |
162 | pZ1 = trackParam->Pz(); | |
163 | p1 = trackParam->P(); | |
164 | ||
165 | // 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); | |
166 | trackReco = trackOK; | |
167 | trackParam = new AliMUONTrackParam(*((AliMUONTrackParam*)(trackReco->GetTrackParamAtHit()->First()))); | |
168 | AliMUONTrackExtrap::ExtrapToVertex(trackParam,x1,y1,z1); | |
169 | x2 = trackParam->GetNonBendingCoor(); | |
170 | y2 = trackParam->GetBendingCoor(); | |
171 | z2 = trackParam->GetZ(); | |
172 | pX2 = trackParam->Px(); | |
173 | pY2 = trackParam->Py(); | |
174 | pZ2 = trackParam->Pz(); | |
175 | p2 = trackParam->P(); | |
176 | delete trackParam; | |
177 | // 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); | |
178 | ||
179 | hResMomVertex->Fill(p2-p1); | |
180 | ||
181 | trackParamAtHit = trackRef->GetTrackParamAtHit(); | |
182 | trackParam = (AliMUONTrackParam*) trackParamAtHit->First(); | |
183 | x1 = trackParam->GetNonBendingCoor(); | |
184 | y1 = trackParam->GetBendingCoor(); | |
185 | z1 = trackParam->GetZ(); | |
186 | pX1 = trackParam->Px(); | |
187 | pY1 = trackParam->Py(); | |
188 | pZ1 = trackParam->Pz(); | |
189 | p1 = trackParam->P(); | |
190 | // printf(" Ref. track at 1st hit: x,y,z: %f %f %f px,py,pz: %f %f %f \n",x1,y1,z1,pX1,pY1,pZ1); | |
191 | trackParamAtHit = trackOK->GetTrackParamAtHit(); | |
192 | trackParam = (AliMUONTrackParam*) trackParamAtHit->First(); | |
193 | x2 = trackParam->GetNonBendingCoor(); | |
194 | y2 = trackParam->GetBendingCoor(); | |
195 | z2 = trackParam->GetZ(); | |
196 | pX2 = trackParam->Px(); | |
197 | pY2 = trackParam->Py(); | |
198 | pZ2 = trackParam->Pz(); | |
199 | p2 = trackParam->P(); | |
200 | // printf(" Reconst. track at 1st hit: x,y,z: %f %f %f px,py,pz: %f %f %f \n",x2,y2,z2,pX2,pY2,pZ2); | |
201 | ||
202 | hResMomFirstHit->Fill(p2-p1); | |
b8dc484b | 203 | |
204 | } | |
205 | } // end loop track ref. | |
b8dc484b | 206 | |
48217459 | 207 | } // end loop on event |
208 | ||
a0bfad0e | 209 | delete field; |
48217459 | 210 | |
b8dc484b | 211 | printf(" nb of reconstructible tracks: %d \n", nReconstructibleTracks); |
212 | printf(" nb of reconstructed tracks: %d \n", nReconstructedTracks); | |
213 | printf(" nb of reconstructible tracks which are reconstructed: %d \n", nReconstructibleTracksCheck); | |
214 | ||
215 | histoFile->Write(); | |
216 | histoFile->Close(); | |
217 | } | |
218 | ||
219 | ||
220 | Int_t TrackCheck( Bool_t *compTrack) | |
221 | { | |
222 | // Apply reconstruction requirements | |
223 | // Return number of validated conditions | |
224 | // If all the tests are verified then TrackCheck = 4 (good track) | |
225 | Int_t iTrack = 0; | |
226 | Int_t hitsInLastStations = 0; | |
227 | ||
228 | // apply reconstruction requirements | |
229 | if (compTrack[0] || compTrack[1]) iTrack++; // at least one hit in st. 0 | |
230 | if (compTrack[2] || compTrack[3]) iTrack++; // at least one hit in st. 1 | |
231 | if (compTrack[4] || compTrack[5]) iTrack++; // at least one hit in st. 2 | |
232 | for (Int_t ch = 6; ch < AliMUONConstants::NTrackingCh(); ch++) { | |
233 | if (compTrack[ch]) hitsInLastStations++; | |
234 | } | |
235 | if (hitsInLastStations > 2) iTrack++; // at least 3 hits in st. 3 & 4 | |
236 | ||
237 | return iTrack; | |
48217459 | 238 | |
b8dc484b | 239 | } |
240 | ||
241 | ||
242 | ||
243 | ||
244 | ||
245 | ||
246 |