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b8dc484b | 1 | /************************************************************************** |
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 | **************************************************************************/ | |
15 | ||
16 | // ROOT includes | |
17 | #include "TClonesArray.h" | |
18 | #include "TH1.h" | |
19 | #include "TParticle.h" | |
20 | #include "TFile.h" | |
21 | ||
22 | // STEER includes | |
23 | #include "AliRun.h" | |
24 | #include "AliHeader.h" | |
25 | #include "AliMC.h" | |
26 | #include "AliStack.h" | |
27 | #include "AliRunLoader.h" | |
28 | ||
29 | // MUON includes | |
30 | #include "AliMUON.h" | |
31 | #include "AliMUONConstants.h" | |
32 | #include "AliMUONTrack.h" | |
33 | #include "AliMUONRecoCheck.h" | |
34 | #include "AliMUONTrackParam.h" | |
35 | ||
36 | Int_t TrackCheck( Bool_t *compTrack); | |
37 | ||
38 | void MUONRecoCheck (Int_t nEvent = 1, char * filename="galice.root"){ | |
39 | ||
40 | // Utility macro to check the muon reconstruction. Reconstructed tracks are compared | |
41 | // to reference tracks. The reference tracks are built from AliTrackReference for the | |
42 | // hit in chamber (0..9) and from kinematics (TreeK) for the vertex parameters. | |
43 | ||
44 | Int_t nTrackReco, nTrackRef; | |
45 | AliMUONTrack *trackReco, *trackRef; | |
46 | Bool_t *compTrack; | |
47 | Bool_t compTrackOK[10]; | |
48 | Int_t nHitOK = 0; | |
49 | Int_t testTrack = 0; | |
50 | Int_t iTrack = 0; | |
51 | Int_t indexOK = 0; | |
52 | Int_t trackID = 0; | |
53 | Double_t sigma2Cut = 16; // 4 sigmas cut, sigma2Cut = 4*4 | |
54 | AliMUONTrackParam *trackParam; | |
55 | TClonesArray *trackParamAtHit; | |
56 | Double_t x1,y1,z1,pX1,pY1,pZ1,p1; | |
57 | Double_t x2,y2,z2,pX2,pY2,pZ2,p2; | |
58 | TParticle* particle = new TParticle(); | |
59 | ||
60 | TClonesArray *trackRecoArray = NULL; | |
61 | TClonesArray *trackRefArray = NULL; | |
62 | ||
63 | ||
64 | // File for histograms and histogram booking | |
65 | TFile *histoFile = new TFile("MUONRecoCheck.root", "RECREATE"); | |
66 | ||
67 | TH1F *hReconstructible = new TH1F("hReconstructible"," Nb of reconstructible tracks ",15,-0.5,14.5); | |
68 | TH1F *hReco = new TH1F("hReco"," Nb of reconstructed tracks / evt",15,-0.5,14.5); | |
69 | TH1F *hNHitComp = new TH1F("hNHitComp"," Nb of compatible hits / track ",15,-0.5,14.5); | |
70 | TH1F *hTestTrack = new TH1F("hTestTrack"," Reconstruction requirement / track",15,-0.5,14.5); | |
71 | TH1F *hTrackRefID = new TH1F("hTrackRefID"," track reference ID ",100,-0.5,99.5); | |
72 | ||
73 | TH1F *hResMomVertex = new TH1F("hMomVertex"," delta P vertex (GeV/c)",100,-10.,10); | |
74 | TH1F *hResMomFirstHit = new TH1F("hMomFirstHit"," delta P first hit (GeV/c)",100,-10.,10); | |
75 | ||
76 | ||
77 | ||
78 | AliMUONRecoCheck rc(filename); | |
79 | AliRunLoader *runLoader = rc.GetRunLoader(); | |
80 | ||
81 | ||
82 | Int_t nevents = runLoader->GetNumberOfEvents(); | |
83 | ||
84 | if (nevents < nEvent) nEvent = nevents; | |
85 | ||
86 | Int_t ievent; | |
87 | Int_t nReconstructibleTracks = 0; | |
88 | Int_t nReconstructedTracks = 0; | |
89 | Int_t nReconstructibleTracksCheck = 0; | |
90 | ||
91 | for (ievent=0; ievent<nEvent; ievent++) { | |
92 | if (!(ievent%10)) printf(" **** event # %d \n",ievent); | |
93 | runLoader->GetEvent(ievent); | |
94 | rc.ResetTracks(); | |
95 | rc.MakeTrackRef(); // make reconstructible tracks | |
96 | // rc.PrintEvent(); | |
97 | ||
98 | ||
99 | trackRecoArray = rc.GetTrackReco(); | |
100 | trackRefArray = rc.GetMuonTrackRef(); | |
101 | ||
102 | nTrackRef = trackRefArray->GetEntriesFast(); | |
103 | nTrackReco = trackRecoArray->GetEntriesFast(); | |
104 | ||
105 | hReconstructible->Fill(rc.GetNumberOfReconstuctibleTracks()); | |
106 | hReco->Fill(rc.GetNumberOfRecoTracks()); | |
107 | ||
108 | nReconstructibleTracks += rc.GetNumberOfReconstuctibleTracks(); | |
109 | nReconstructedTracks += rc.GetNumberOfRecoTracks(); | |
110 | ||
111 | for (Int_t index1 = 0; index1 < nTrackRef; index1++) { | |
112 | trackRef = (AliMUONTrack *)trackRefArray->At(index1); | |
113 | ||
114 | testTrack = 0; | |
115 | indexOK = 0; | |
116 | for (Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++) | |
117 | compTrackOK[ch] = kFALSE; | |
118 | for (Int_t index2 = 0; index2 < nTrackReco; index2++) { | |
119 | trackReco = (AliMUONTrack *)trackRecoArray->At(index2); | |
120 | ||
121 | // check if trackRef is compatible with trackReco | |
122 | compTrack = trackRef->CompatibleTrack(trackReco,sigma2Cut); | |
123 | ||
124 | iTrack = TrackCheck(compTrack); | |
125 | ||
126 | if (iTrack > testTrack) { | |
127 | nHitOK = 0; | |
128 | for (Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++) { | |
129 | if (compTrack[ch]) nHitOK++; | |
130 | compTrackOK[ch] = compTrack[ch]; | |
131 | } | |
132 | testTrack = iTrack; | |
133 | indexOK = index2; | |
134 | } | |
135 | } | |
136 | ||
137 | hTestTrack->Fill(testTrack); | |
138 | trackID = trackRef->GetTrackID(); | |
139 | hTrackRefID->Fill(trackID); | |
140 | ||
141 | if (testTrack == 4) { // tracking requirements verified, track is found | |
142 | nReconstructibleTracksCheck++; | |
143 | hNHitComp->Fill(nHitOK); | |
144 | particle = runLoader->GetHeader()->Stack()->Particle(trackID); | |
145 | // printf(" trackID: %d , PDG code: %d \n",trackID,particle->GetPdgCode()); | |
146 | trackParam = trackRef->GetTrackParamAtVertex(); | |
147 | x1 = trackParam->GetNonBendingCoor(); | |
148 | y1 = trackParam->GetBendingCoor(); | |
149 | z1 = trackParam->GetZ(); | |
150 | pX1 = trackParam->Px(); | |
151 | pY1 = trackParam->Py(); | |
152 | pZ1 = trackParam->Pz(); | |
153 | p1 = trackParam->P(); | |
154 | ||
155 | // 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); | |
156 | ||
157 | trackParam = ((AliMUONTrack *)trackRecoArray->At(indexOK))->GetTrackParamAtVertex(); | |
158 | x2 = trackParam->GetNonBendingCoor(); | |
159 | y2 = trackParam->GetBendingCoor(); | |
160 | z2 = trackParam->GetZ(); | |
161 | pX2 = trackParam->Px(); | |
162 | pY2 = trackParam->Py(); | |
163 | pZ2 = trackParam->Pz(); | |
164 | p2 = trackParam->P(); | |
165 | // 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); | |
166 | ||
167 | hResMomVertex->Fill(p2-p1); | |
168 | ||
169 | trackParamAtHit = trackRef->GetTrackParamAtHit(); | |
170 | trackParam = (AliMUONTrackParam*) trackParamAtHit->First(); | |
171 | x1 = trackParam->GetNonBendingCoor(); | |
172 | y1 = trackParam->GetBendingCoor(); | |
173 | z1 = trackParam->GetZ(); | |
174 | pX1 = trackParam->Px(); | |
175 | pY1 = trackParam->Py(); | |
176 | pZ1 = trackParam->Pz(); | |
177 | p1 = trackParam->P(); | |
178 | // 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); | |
179 | trackParamAtHit = ((AliMUONTrack *) trackRecoArray->At(indexOK))->GetTrackParamAtHit(); | |
180 | trackParam = (AliMUONTrackParam*) trackParamAtHit->First(); | |
181 | x2 = trackParam->GetNonBendingCoor(); | |
182 | y2 = trackParam->GetBendingCoor(); | |
183 | z2 = trackParam->GetZ(); | |
184 | pX2 = trackParam->Px(); | |
185 | pY2 = trackParam->Py(); | |
186 | pZ2 = trackParam->Pz(); | |
187 | p2 = trackParam->P(); | |
188 | // 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); | |
189 | ||
190 | hResMomFirstHit->Fill(p2-p1); | |
191 | ||
192 | } | |
193 | } // end loop track ref. | |
194 | ||
195 | } // end loop on event | |
196 | ||
197 | printf(" nb of reconstructible tracks: %d \n", nReconstructibleTracks); | |
198 | printf(" nb of reconstructed tracks: %d \n", nReconstructedTracks); | |
199 | printf(" nb of reconstructible tracks which are reconstructed: %d \n", nReconstructibleTracksCheck); | |
200 | ||
201 | histoFile->Write(); | |
202 | histoFile->Close(); | |
203 | } | |
204 | ||
205 | ||
206 | Int_t TrackCheck( Bool_t *compTrack) | |
207 | { | |
208 | // Apply reconstruction requirements | |
209 | // Return number of validated conditions | |
210 | // If all the tests are verified then TrackCheck = 4 (good track) | |
211 | Int_t iTrack = 0; | |
212 | Int_t hitsInLastStations = 0; | |
213 | ||
214 | // apply reconstruction requirements | |
215 | if (compTrack[0] || compTrack[1]) iTrack++; // at least one hit in st. 0 | |
216 | if (compTrack[2] || compTrack[3]) iTrack++; // at least one hit in st. 1 | |
217 | if (compTrack[4] || compTrack[5]) iTrack++; // at least one hit in st. 2 | |
218 | for (Int_t ch = 6; ch < AliMUONConstants::NTrackingCh(); ch++) { | |
219 | if (compTrack[ch]) hitsInLastStations++; | |
220 | } | |
221 | if (hitsInLastStations > 2) iTrack++; // at least 3 hits in st. 3 & 4 | |
222 | ||
223 | return iTrack; | |
224 | ||
225 | } | |
226 | ||
227 | ||
228 | ||
229 | ||
230 | ||
231 | ||
232 |