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a9e2aefa | 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 | ||
88cb7938 | 16 | /* $Id$ */ |
a9e2aefa | 17 | |
3831f268 | 18 | //////////////////////////////////// |
a9e2aefa | 19 | // |
20 | // MUON event reconstructor in ALICE | |
21 | // | |
22 | // This class contains as data: | |
23 | // * the parameters for the event reconstruction | |
24 | // * a pointer to the array of hits to be reconstructed (the event) | |
25 | // * a pointer to the array of segments made with these hits inside each station | |
26 | // * a pointer to the array of reconstructed tracks | |
27 | // | |
28 | // It contains as methods, among others: | |
29 | // * MakeEventToBeReconstructed to build the array of hits to be reconstructed | |
30 | // * MakeSegments to build the segments | |
31 | // * MakeTracks to build the tracks | |
3831f268 | 32 | // |
33 | //////////////////////////////////// | |
a9e2aefa | 34 | |
ae17f568 | 35 | #include <stdlib.h> |
30178c30 | 36 | #include <Riostream.h> |
37 | #include <TDirectory.h> | |
38 | #include <TFile.h> | |
39 | #include <TMatrixD.h> //AZ | |
a9e2aefa | 40 | |
3831f268 | 41 | #include "AliMUONEventReconstructor.h" |
30178c30 | 42 | #include "AliMUON.h" |
29fc2c86 | 43 | #include "AliMUONConstants.h" |
a9e2aefa | 44 | #include "AliMUONHitForRec.h" |
276c44b7 | 45 | #include "AliMUONTriggerTrack.h" |
276c44b7 | 46 | #include "AliMUONTriggerCircuit.h" |
a9e2aefa | 47 | #include "AliMUONRawCluster.h" |
276c44b7 | 48 | #include "AliMUONLocalTrigger.h" |
52c9bc11 | 49 | #include "AliMUONGlobalTrigger.h" |
3831f268 | 50 | #include "AliMUONRecoEvent.h" |
51 | #include "AliMUONSegment.h" | |
a9e2aefa | 52 | #include "AliMUONTrack.h" |
a9e2aefa | 53 | #include "AliMUONTrackHit.h" |
94de3818 | 54 | #include "AliMagF.h" |
3831f268 | 55 | #include "AliRun.h" // for gAlice |
88cb7938 | 56 | #include "AliRunLoader.h" |
57 | #include "AliLoader.h" | |
83dbc640 | 58 | #include "AliMUONTrackK.h" //AZ |
5d12ce38 | 59 | #include "AliMC.h" |
8c343c7c | 60 | #include "AliLog.h" |
29fc2c86 | 61 | #include "AliTrackReference.h" |
a9e2aefa | 62 | |
a9e2aefa | 63 | //************* Defaults parameters for reconstruction |
343146bf | 64 | const Double_t AliMUONEventReconstructor::fgkDefaultMinBendingMomentum = 3.0; |
10a28d39 | 65 | const Double_t AliMUONEventReconstructor::fgkDefaultMaxBendingMomentum = 2000.0; |
343146bf | 66 | const Double_t AliMUONEventReconstructor::fgkDefaultMaxChi2 = 100.0; |
67 | const Double_t AliMUONEventReconstructor::fgkDefaultMaxSigma2Distance = 16.0; | |
68 | const Double_t AliMUONEventReconstructor::fgkDefaultBendingResolution = 0.01; | |
69 | const Double_t AliMUONEventReconstructor::fgkDefaultNonBendingResolution = 0.144; | |
70 | const Double_t AliMUONEventReconstructor::fgkDefaultChamberThicknessInX0 = 0.03; | |
a9e2aefa | 71 | // Simple magnetic field: |
72 | // Value taken from macro MUONtracking.C: 0.7 T, hence 7 kG | |
73 | // Length and Position from reco_muon.F, with opposite sign: | |
74 | // Length = ZMAGEND-ZCOIL | |
75 | // Position = (ZMAGEND+ZCOIL)/2 | |
76 | // to be ajusted differently from real magnetic field ???? | |
343146bf | 77 | const Double_t AliMUONEventReconstructor::fgkDefaultSimpleBValue = 7.0; |
78 | const Double_t AliMUONEventReconstructor::fgkDefaultSimpleBLength = 428.0; | |
79 | const Double_t AliMUONEventReconstructor::fgkDefaultSimpleBPosition = 1019.0; | |
29fc2c86 | 80 | const Int_t AliMUONEventReconstructor::fgkDefaultRecTrackRefHits = 0; |
343146bf | 81 | const Double_t AliMUONEventReconstructor::fgkDefaultEfficiency = 0.95; |
a9e2aefa | 82 | |
b840996b | 83 | const Int_t AliMUONEventReconstructor::fgkDefaultPrintLevel = -1; // Obsolete and replaced by AliLog frame work |
a9e2aefa | 84 | |
85 | ClassImp(AliMUONEventReconstructor) // Class implementation in ROOT context | |
86 | ||
87 | //__________________________________________________________________________ | |
52c9bc11 | 88 | AliMUONEventReconstructor::AliMUONEventReconstructor(AliLoader* loader) |
30178c30 | 89 | : TObject() |
a9e2aefa | 90 | { |
91 | // Constructor for class AliMUONEventReconstructor | |
92 | SetReconstructionParametersToDefaults(); | |
83dbc640 | 93 | fTrackMethod = 1; //AZ - tracking method (1-default, 2-Kalman) |
a9e2aefa | 94 | // Memory allocation for the TClonesArray of hits for reconstruction |
95 | // Is 10000 the right size ???? | |
96 | fHitsForRecPtr = new TClonesArray("AliMUONHitForRec", 10000); | |
97 | fNHitsForRec = 0; // really needed or GetEntriesFast sufficient ???? | |
98 | // Memory allocation for the TClonesArray's of segments in stations | |
99 | // Is 2000 the right size ???? | |
30178c30 | 100 | for (Int_t st = 0; st < fgkMaxMuonTrackingStations; st++) { |
a9e2aefa | 101 | fSegmentsPtr[st] = new TClonesArray("AliMUONSegment", 2000); |
102 | fNSegments[st] = 0; // really needed or GetEntriesFast sufficient ???? | |
103 | } | |
104 | // Memory allocation for the TClonesArray of reconstructed tracks | |
105 | // Is 10 the right size ???? | |
106 | fRecTracksPtr = new TClonesArray("AliMUONTrack", 10); | |
107 | fNRecTracks = 0; // really needed or GetEntriesFast sufficient ???? | |
276c44b7 | 108 | // trigger tracks |
109 | fRecTriggerTracksPtr = new TClonesArray("AliMUONTriggerTrack", 10); | |
110 | fNRecTriggerTracks = 0; // really needed or GetEntriesFast sufficient ???? | |
8429a5e4 | 111 | // Memory allocation for the TClonesArray of hits on reconstructed tracks |
112 | // Is 100 the right size ???? | |
b035a148 | 113 | //AZ fRecTrackHitsPtr = new TClonesArray("AliMUONTrack", 100); |
114 | fRecTrackHitsPtr = new TClonesArray("AliMUONTrackHit", 100); | |
8429a5e4 | 115 | fNRecTrackHits = 0; // really needed or GetEntriesFast sufficient ???? |
a9e2aefa | 116 | |
5b64e914 | 117 | // Sign of fSimpleBValue according to sign of Bx value at (50,50,-950). |
a6f03ddb | 118 | Float_t b[3], x[3]; |
5b64e914 | 119 | x[0] = 50.; x[1] = 50.; x[2] = -950.; |
a6f03ddb | 120 | gAlice->Field()->Field(x, b); |
065bd0e1 | 121 | fSimpleBValue = TMath::Sign(fSimpleBValue,(Double_t) b[0]); |
5b64e914 | 122 | fSimpleBPosition = TMath::Sign(fSimpleBPosition,(Double_t) x[2]); |
a6f03ddb | 123 | // See how to get fSimple(BValue, BLength, BPosition) |
124 | // automatically calculated from the actual magnetic field ???? | |
a9e2aefa | 125 | |
b840996b | 126 | AliDebug(1,"AliMUONEventReconstructor constructed with defaults"); |
127 | if ( AliLog::GetGlobalDebugLevel()>0) Dump(); | |
128 | AliDebug(1,"Magnetic field from root file:"); | |
129 | if ( AliLog::GetGlobalDebugLevel()>0) gAlice->Field()->Dump(); | |
130 | ||
c7ba256d | 131 | |
29fc2c86 | 132 | // Initializions for track ref. background events |
133 | fBkgTrackRefFile = 0; | |
134 | fBkgTrackRefTK = 0; | |
135 | fBkgTrackRefParticles = 0; | |
136 | fBkgTrackRefTTR = 0; | |
137 | fBkgTrackRefEventNumber = -1; | |
47a6b602 | 138 | |
c7ba256d | 139 | // Initialize to 0 pointers to RecoEvent, tree and tree file |
140 | fRecoEvent = 0; | |
141 | fEventTree = 0; | |
142 | fTreeFile = 0; | |
52c9bc11 | 143 | |
144 | // initialize loader's | |
145 | fLoader = loader; | |
146 | ||
147 | // initialize container | |
148 | fMUONData = new AliMUONData(fLoader,"MUON","MUON"); | |
149 | ||
a9e2aefa | 150 | return; |
151 | } | |
52c9bc11 | 152 | //__________________________________________________________________________ |
30178c30 | 153 | AliMUONEventReconstructor::AliMUONEventReconstructor (const AliMUONEventReconstructor& rhs) |
154 | : TObject(rhs) | |
9cbdf048 | 155 | { |
30178c30 | 156 | // Protected copy constructor |
157 | ||
8c343c7c | 158 | AliFatal("Not implemented."); |
9cbdf048 | 159 | } |
160 | ||
30178c30 | 161 | AliMUONEventReconstructor & |
162 | AliMUONEventReconstructor::operator=(const AliMUONEventReconstructor& rhs) | |
9cbdf048 | 163 | { |
30178c30 | 164 | // Protected assignement operator |
165 | ||
166 | if (this == &rhs) return *this; | |
167 | ||
8c343c7c | 168 | AliFatal("Not implemented."); |
30178c30 | 169 | |
170 | return *this; | |
9cbdf048 | 171 | } |
172 | ||
a9e2aefa | 173 | //__________________________________________________________________________ |
174 | AliMUONEventReconstructor::~AliMUONEventReconstructor(void) | |
175 | { | |
176 | // Destructor for class AliMUONEventReconstructor | |
c7ba256d | 177 | if (fTreeFile) { |
178 | fTreeFile->Close(); | |
179 | delete fTreeFile; | |
180 | } | |
181 | // if (fEventTree) delete fEventTree; | |
182 | if (fRecoEvent) delete fRecoEvent; | |
a9e2aefa | 183 | delete fHitsForRecPtr; // Correct destruction of everything ???? or delete [] ???? |
30178c30 | 184 | for (Int_t st = 0; st < fgkMaxMuonTrackingStations; st++) |
a9e2aefa | 185 | delete fSegmentsPtr[st]; // Correct destruction of everything ???? |
186 | return; | |
187 | } | |
188 | ||
189 | //__________________________________________________________________________ | |
190 | void AliMUONEventReconstructor::SetReconstructionParametersToDefaults(void) | |
191 | { | |
192 | // Set reconstruction parameters to default values | |
193 | // Would be much more convenient with a structure (or class) ???? | |
343146bf | 194 | fMinBendingMomentum = fgkDefaultMinBendingMomentum; |
195 | fMaxBendingMomentum = fgkDefaultMaxBendingMomentum; | |
196 | fMaxChi2 = fgkDefaultMaxChi2; | |
197 | fMaxSigma2Distance = fgkDefaultMaxSigma2Distance; | |
a9e2aefa | 198 | |
9cbdf048 | 199 | AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON"); |
a9e2aefa | 200 | // ******** Parameters for making HitsForRec |
201 | // minimum radius, | |
202 | // like in TRACKF_STAT: | |
203 | // 2 degrees for stations 1 and 2, or ch(0...) from 0 to 3; | |
204 | // 30 cm for stations 3 to 5, or ch(0...) from 4 to 9 | |
343146bf | 205 | for (Int_t ch = 0; ch < fgkMaxMuonTrackingChambers; ch++) { |
9cbdf048 | 206 | if (ch < 4) fRMin[ch] = TMath::Abs((&(pMUON->Chamber(ch)))->Z()) * |
a9e2aefa | 207 | 2.0 * TMath::Pi() / 180.0; |
208 | else fRMin[ch] = 30.0; | |
d0bfce8d | 209 | // maximum radius at 10 degrees and Z of chamber |
210 | fRMax[ch] = TMath::Abs((&(pMUON->Chamber(ch)))->Z()) * | |
211 | 10.0 * TMath::Pi() / 180.0; | |
a9e2aefa | 212 | } |
a9e2aefa | 213 | |
214 | // ******** Parameters for making segments | |
215 | // should be parametrized ???? | |
216 | // according to interval between chambers in a station ???? | |
217 | // Maximum distance in non bending plane | |
218 | // 5 * 0.22 just to remember the way it was made in TRACKF_STAT | |
219 | // SIGCUT*DYMAX(IZ) | |
30178c30 | 220 | for (Int_t st = 0; st < fgkMaxMuonTrackingStations; st++) |
a9e2aefa | 221 | fSegmentMaxDistNonBending[st] = 5. * 0.22; |
860cef81 | 222 | // Maximum distance in bending plane: |
223 | // values from TRACKF_STAT, corresponding to (J psi 20cm), | |
224 | // scaled to the real distance between chambers in a station | |
ef21c79e | 225 | fSegmentMaxDistBending[0] = TMath::Abs( 1.5 * |
226 | ((&(pMUON->Chamber(1)))->Z() - (&(pMUON->Chamber(0)))->Z()) / 20.0); | |
e516b01d | 227 | fSegmentMaxDistBending[1] = TMath::Abs( 1.5 * |
ef21c79e | 228 | ((&(pMUON->Chamber(3)))->Z() - (&(pMUON->Chamber(2)))->Z()) / 20.0); |
e516b01d | 229 | fSegmentMaxDistBending[2] = TMath::Abs( 3.0 * |
ef21c79e | 230 | ((&(pMUON->Chamber(5)))->Z() - (&(pMUON->Chamber(4)))->Z()) / 20.0); |
e516b01d | 231 | fSegmentMaxDistBending[3] = TMath::Abs( 6.0 * |
ef21c79e | 232 | ((&(pMUON->Chamber(7)))->Z() - (&(pMUON->Chamber(6)))->Z()) / 20.0); |
e516b01d | 233 | fSegmentMaxDistBending[4] = TMath::Abs( 6.0 * |
ef21c79e | 234 | ((&(pMUON->Chamber(9)))->Z() - (&(pMUON->Chamber(8)))->Z()) / 20.0); |
a9e2aefa | 235 | |
343146bf | 236 | fBendingResolution = fgkDefaultBendingResolution; |
237 | fNonBendingResolution = fgkDefaultNonBendingResolution; | |
238 | fChamberThicknessInX0 = fgkDefaultChamberThicknessInX0; | |
239 | fSimpleBValue = fgkDefaultSimpleBValue; | |
240 | fSimpleBLength = fgkDefaultSimpleBLength; | |
241 | fSimpleBPosition = fgkDefaultSimpleBPosition; | |
29fc2c86 | 242 | fRecTrackRefHits = fgkDefaultRecTrackRefHits; |
343146bf | 243 | fEfficiency = fgkDefaultEfficiency; |
b840996b | 244 | fPrintLevel = fgkDefaultPrintLevel; // Obsolete and replaced by AliLog framework |
a9e2aefa | 245 | return; |
246 | } | |
247 | ||
248 | //__________________________________________________________________________ | |
3831f268 | 249 | Double_t AliMUONEventReconstructor::GetImpactParamFromBendingMomentum(Double_t BendingMomentum) const |
a9e2aefa | 250 | { |
251 | // Returns impact parameter at vertex in bending plane (cm), | |
252 | // from the signed bending momentum "BendingMomentum" in bending plane (GeV/c), | |
253 | // using simple values for dipole magnetic field. | |
065bd0e1 | 254 | // The sign of "BendingMomentum" is the sign of the charge. |
a9e2aefa | 255 | return (-0.0003 * fSimpleBValue * fSimpleBLength * fSimpleBPosition / |
256 | BendingMomentum); | |
257 | } | |
258 | ||
259 | //__________________________________________________________________________ | |
3831f268 | 260 | Double_t AliMUONEventReconstructor::GetBendingMomentumFromImpactParam(Double_t ImpactParam) const |
a9e2aefa | 261 | { |
262 | // Returns signed bending momentum in bending plane (GeV/c), | |
065bd0e1 | 263 | // the sign being the sign of the charge for particles moving forward in Z, |
a9e2aefa | 264 | // from the impact parameter "ImpactParam" at vertex in bending plane (cm), |
265 | // using simple values for dipole magnetic field. | |
a9e2aefa | 266 | return (-0.0003 * fSimpleBValue * fSimpleBLength * fSimpleBPosition / |
267 | ImpactParam); | |
268 | } | |
269 | ||
270 | //__________________________________________________________________________ | |
29fc2c86 | 271 | void AliMUONEventReconstructor::SetBkgTrackRefFile(Text_t *BkgTrackRefFileName) |
a9e2aefa | 272 | { |
29fc2c86 | 273 | // Set background file ... for track ref. hits |
a9e2aefa | 274 | // Must be called after having loaded the firts signal event |
b840996b | 275 | AliDebug(1,Form("Enter SetBkgTrackRefFile with BkgTrackRefFileName %s",BkgTrackRefFileName)); |
276 | ||
29fc2c86 | 277 | if (strlen(BkgTrackRefFileName)) { |
278 | // BkgTrackRefFileName not empty: try to open the file | |
b840996b | 279 | |
280 | if(AliLog::GetGlobalDebugLevel()>1) { | |
281 | cout << "Before File(Bkg)" << endl; gDirectory->Dump(); | |
282 | } | |
29fc2c86 | 283 | fBkgTrackRefFile = new TFile(BkgTrackRefFileName); |
b840996b | 284 | if(AliLog::GetGlobalDebugLevel()>1) { |
285 | cout << "After File(Bkg)" << endl; gDirectory->Dump(); | |
286 | } | |
29fc2c86 | 287 | if (fBkgTrackRefFile-> IsOpen()) { |
b840996b | 288 | if(AliLog::GetGlobalDebugLevel()>0) { |
29fc2c86 | 289 | cout << "Background for Track ref. hits in file: ``" << BkgTrackRefFileName |
a9e2aefa | 290 | << "'' successfully opened" << endl;} |
291 | } | |
292 | else { | |
29fc2c86 | 293 | cout << "Background for Track Ref. hits in file: " << BkgTrackRefFileName << endl; |
a9e2aefa | 294 | cout << "NOT FOUND: EXIT" << endl; |
295 | exit(0); // right instruction for exit ???? | |
296 | } | |
297 | // Arrays for "particles" and "hits" | |
29fc2c86 | 298 | fBkgTrackRefParticles = new TClonesArray("TParticle", 200); |
a9e2aefa | 299 | // Event number to -1 for initialization |
29fc2c86 | 300 | fBkgTrackRefEventNumber = -1; |
a9e2aefa | 301 | // Back to the signal file: |
302 | // first signal event must have been loaded previously, | |
303 | // otherwise, Segmentation violation at the next instruction | |
304 | // How is it possible to do smething better ???? | |
305 | ((gAlice->TreeK())->GetCurrentFile())->cd(); | |
b840996b | 306 | if(AliLog::GetGlobalDebugLevel()>1) cout << "After cd(gAlice)" << endl; gDirectory->Dump(); |
a9e2aefa | 307 | } |
308 | return; | |
309 | } | |
310 | ||
311 | //__________________________________________________________________________ | |
29fc2c86 | 312 | void AliMUONEventReconstructor::NextBkgTrackRefEvent(void) |
a9e2aefa | 313 | { |
29fc2c86 | 314 | // Get next event in background file for track ref. hits |
a9e2aefa | 315 | // Goes back to event number 0 when end of file is reached |
316 | char treeName[20]; | |
b840996b | 317 | |
318 | AliDebug(1,"Enter NextBkgTrackRefEvent"); | |
a9e2aefa | 319 | // Clean previous event |
29fc2c86 | 320 | if(fBkgTrackRefTK) delete fBkgTrackRefTK; |
321 | fBkgTrackRefTK = NULL; | |
322 | if(fBkgTrackRefParticles) fBkgTrackRefParticles->Clear(); | |
323 | if(fBkgTrackRefTTR) delete fBkgTrackRefTTR; | |
324 | fBkgTrackRefTTR = NULL; | |
a9e2aefa | 325 | // Increment event number |
29fc2c86 | 326 | fBkgTrackRefEventNumber++; |
a9e2aefa | 327 | // Get access to Particles and Hits for event from background file |
b840996b | 328 | if (AliLog::GetGlobalDebugLevel()>1) cout << "Before cd(Bkg)" << endl; gDirectory->Dump(); |
29fc2c86 | 329 | fBkgTrackRefFile->cd(); |
b840996b | 330 | if (AliLog::GetGlobalDebugLevel()>1) cout << "After cd(Bkg)" << endl; gDirectory->Dump(); |
a9e2aefa | 331 | // Particles: TreeK for event and branch "Particles" |
29fc2c86 | 332 | sprintf(treeName, "TreeK%d", fBkgTrackRefEventNumber); |
333 | fBkgTrackRefTK = (TTree*)gDirectory->Get(treeName); | |
334 | if (!fBkgTrackRefTK) { | |
b840996b | 335 | |
336 | AliDebug(1,Form("Cannot find Kine Tree for background event: %d",fBkgTrackRefEventNumber)); | |
337 | AliDebug(1,"Goes back to event 0"); | |
338 | ||
29fc2c86 | 339 | fBkgTrackRefEventNumber = 0; |
340 | sprintf(treeName, "TreeK%d", fBkgTrackRefEventNumber); | |
341 | fBkgTrackRefTK = (TTree*)gDirectory->Get(treeName); | |
342 | if (!fBkgTrackRefTK) { | |
343 | AliError(Form("cannot find Kine Tree for background event: %d",fBkgTrackRefEventNumber)); | |
8c343c7c | 344 | exit(0); |
a9e2aefa | 345 | } |
346 | } | |
29fc2c86 | 347 | if (fBkgTrackRefTK) |
348 | fBkgTrackRefTK->SetBranchAddress("Particles", &fBkgTrackRefParticles); | |
349 | fBkgTrackRefTK->GetEvent(0); // why event 0 ???? necessary ???? | |
a9e2aefa | 350 | // Hits: TreeH for event and branch "MUON" |
29fc2c86 | 351 | sprintf(treeName, "TreeTR%d", fBkgTrackRefEventNumber); |
352 | fBkgTrackRefTTR = (TTree*)gDirectory->Get(treeName); | |
353 | if (!fBkgTrackRefTTR) { | |
354 | AliError(Form("cannot find Hits Tree for background event: %d",fBkgTrackRefEventNumber)); | |
a9e2aefa | 355 | exit(0); |
356 | } | |
29fc2c86 | 357 | fBkgTrackRefTTR->GetEntries(); // necessary ???? |
a9e2aefa | 358 | // Back to the signal file |
359 | ((gAlice->TreeK())->GetCurrentFile())->cd(); | |
b840996b | 360 | if (AliLog::GetGlobalDebugLevel()>1) |
361 | cout << "After cd(gAlice)" << endl; gDirectory->Dump(); | |
a9e2aefa | 362 | return; |
363 | } | |
364 | ||
365 | //__________________________________________________________________________ | |
366 | void AliMUONEventReconstructor::EventReconstruct(void) | |
367 | { | |
368 | // To reconstruct one event | |
b840996b | 369 | AliDebug(1,"Enter EventReconstruct"); |
a9e2aefa | 370 | MakeEventToBeReconstructed(); |
371 | MakeSegments(); | |
372 | MakeTracks(); | |
d837040f | 373 | if (fMUONData->IsTriggerTrackBranchesInTree()) |
374 | ValidateTracksWithTrigger(); | |
375 | ||
376 | // Add tracks to MUON data container | |
377 | for(Int_t i=0; i<GetNRecTracks(); i++) { | |
378 | AliMUONTrack * track = (AliMUONTrack*) GetRecTracksPtr()->At(i); | |
379 | fMUONData->AddRecTrack(*track); | |
380 | } | |
381 | ||
a9e2aefa | 382 | return; |
383 | } | |
384 | ||
276c44b7 | 385 | //__________________________________________________________________________ |
386 | void AliMUONEventReconstructor::EventReconstructTrigger(void) | |
387 | { | |
388 | // To reconstruct one event | |
b840996b | 389 | AliDebug(1,"Enter EventReconstructTrigger"); |
276c44b7 | 390 | MakeTriggerTracks(); |
391 | return; | |
392 | } | |
393 | ||
a9e2aefa | 394 | //__________________________________________________________________________ |
395 | void AliMUONEventReconstructor::ResetHitsForRec(void) | |
396 | { | |
397 | // To reset the array and the number of HitsForRec, | |
398 | // and also the number of HitsForRec | |
399 | // and the index of the first HitForRec per chamber | |
400 | if (fHitsForRecPtr) fHitsForRecPtr->Clear(); | |
401 | fNHitsForRec = 0; | |
343146bf | 402 | for (Int_t ch = 0; ch < fgkMaxMuonTrackingChambers; ch++) |
a9e2aefa | 403 | fNHitsForRecPerChamber[ch] = fIndexOfFirstHitForRecPerChamber[ch] = 0; |
404 | return; | |
405 | } | |
406 | ||
407 | //__________________________________________________________________________ | |
408 | void AliMUONEventReconstructor::ResetSegments(void) | |
409 | { | |
410 | // To reset the TClonesArray of segments and the number of Segments | |
411 | // for all stations | |
30178c30 | 412 | for (Int_t st = 0; st < fgkMaxMuonTrackingStations; st++) { |
a9e2aefa | 413 | if (fSegmentsPtr[st]) fSegmentsPtr[st]->Clear(); |
414 | fNSegments[st] = 0; | |
415 | } | |
416 | return; | |
417 | } | |
418 | ||
419 | //__________________________________________________________________________ | |
420 | void AliMUONEventReconstructor::ResetTracks(void) | |
421 | { | |
422 | // To reset the TClonesArray of reconstructed tracks | |
8429a5e4 | 423 | if (fRecTracksPtr) fRecTracksPtr->Delete(); |
424 | // Delete in order that the Track destructors are called, | |
425 | // hence the space for the TClonesArray of pointers to TrackHit's is freed | |
a9e2aefa | 426 | fNRecTracks = 0; |
427 | return; | |
428 | } | |
429 | ||
276c44b7 | 430 | //__________________________________________________________________________ |
431 | void AliMUONEventReconstructor::ResetTriggerTracks(void) | |
432 | { | |
433 | // To reset the TClonesArray of reconstructed trigger tracks | |
434 | if (fRecTriggerTracksPtr) fRecTriggerTracksPtr->Delete(); | |
435 | // Delete in order that the Track destructors are called, | |
436 | // hence the space for the TClonesArray of pointers to TrackHit's is freed | |
437 | fNRecTriggerTracks = 0; | |
438 | return; | |
439 | } | |
440 | ||
8429a5e4 | 441 | //__________________________________________________________________________ |
442 | void AliMUONEventReconstructor::ResetTrackHits(void) | |
443 | { | |
444 | // To reset the TClonesArray of hits on reconstructed tracks | |
445 | if (fRecTrackHitsPtr) fRecTrackHitsPtr->Clear(); | |
446 | fNRecTrackHits = 0; | |
447 | return; | |
448 | } | |
449 | ||
a9e2aefa | 450 | //__________________________________________________________________________ |
451 | void AliMUONEventReconstructor::MakeEventToBeReconstructed(void) | |
452 | { | |
453 | // To make the list of hits to be reconstructed, | |
29fc2c86 | 454 | // either from the track ref. hits or from the raw clusters |
a9e2aefa | 455 | // according to the parameter set for the reconstructor |
e191bb57 | 456 | // TString evfoldname = AliConfig::GetDefaultEventFolderName();//to be interfaced properly |
88cb7938 | 457 | |
52c9bc11 | 458 | // AliRunLoader* rl = AliRunLoader::GetRunLoader(evfoldname); |
459 | // if (rl == 0x0) | |
460 | // { | |
461 | // Error("MakeEventToBeReconstructed", | |
462 | // "Can not find Run Loader in Event Folder named %s.", | |
463 | // evfoldname.Data()); | |
464 | // return; | |
465 | // } | |
466 | // AliLoader* gime = rl->GetLoader("MUONLoader"); | |
467 | // if (gime == 0x0) | |
468 | // { | |
469 | // Error("MakeEventToBeReconstructed","Can not get MUON Loader from Run Loader."); | |
470 | // return; | |
471 | // } | |
29fc2c86 | 472 | AliRunLoader *runLoader = fLoader->GetRunLoader(); |
473 | ||
b840996b | 474 | AliDebug(1,"Enter MakeEventToBeReconstructed"); |
a9e2aefa | 475 | ResetHitsForRec(); |
29fc2c86 | 476 | if (fRecTrackRefHits == 1) { |
477 | // Reconstruction from track ref. hits | |
a9e2aefa | 478 | // Back to the signal file |
29fc2c86 | 479 | TTree* treeTR = runLoader->TreeTR(); |
480 | if (treeTR == 0x0) | |
481 | { | |
482 | Int_t retval = runLoader->LoadTrackRefs("READ"); | |
483 | if ( retval) | |
88cb7938 | 484 | { |
8c343c7c | 485 | AliError("Error occured while loading hits."); |
88cb7938 | 486 | return; |
487 | } | |
29fc2c86 | 488 | treeTR = runLoader->TreeTR(); |
489 | if (treeTR == 0x0) | |
88cb7938 | 490 | { |
29fc2c86 | 491 | AliError("Can not get TreeTR"); |
492 | return; | |
88cb7938 | 493 | } |
29fc2c86 | 494 | } |
495 | ||
496 | AddHitsForRecFromTrackRef(treeTR,1); | |
88cb7938 | 497 | |
a9e2aefa | 498 | // Background hits |
29fc2c86 | 499 | AddHitsForRecFromTrackRef(fBkgTrackRefTTR,0); |
a9e2aefa | 500 | // Sort HitsForRec in increasing order with respect to chamber number |
501 | SortHitsForRecWithIncreasingChamber(); | |
502 | } | |
503 | else { | |
504 | // Reconstruction from raw clusters | |
505 | // AliMUON *MUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? | |
506 | // Security on MUON ???? | |
507 | // TreeR assumed to be be "prepared" in calling function | |
508 | // by "MUON->GetTreeR(nev)" ???? | |
52c9bc11 | 509 | TTree *treeR = fLoader->TreeR(); |
510 | fMUONData->SetTreeAddress("RC"); | |
9cbdf048 | 511 | AddHitsForRecFromRawClusters(treeR); |
a9e2aefa | 512 | // No sorting: it is done automatically in the previous function |
513 | } | |
b840996b | 514 | |
515 | AliDebug(1,"End of MakeEventToBeReconstructed"); | |
516 | if (AliLog::GetGlobalDebugLevel() > 0) { | |
517 | AliDebug(1, Form("NHitsForRec: %d",fNHitsForRec)); | |
518 | for (Int_t ch = 0; ch < fgkMaxMuonTrackingChambers; ch++) { | |
519 | AliDebug(1, Form("Chamber(0...): %d",ch)); | |
520 | AliDebug(1, Form("NHitsForRec: %d", fNHitsForRecPerChamber[ch])); | |
521 | AliDebug(1, Form("Index(first HitForRec): %d", fIndexOfFirstHitForRecPerChamber[ch])); | |
522 | for (Int_t hit = fIndexOfFirstHitForRecPerChamber[ch]; | |
523 | hit < fIndexOfFirstHitForRecPerChamber[ch] + fNHitsForRecPerChamber[ch]; | |
524 | hit++) { | |
525 | AliDebug(1, Form("HitForRec index(0...): %d",hit)); | |
526 | ((*fHitsForRecPtr)[hit])->Dump(); | |
a9e2aefa | 527 | } |
528 | } | |
529 | } | |
530 | return; | |
531 | } | |
532 | ||
533 | //__________________________________________________________________________ | |
29fc2c86 | 534 | void AliMUONEventReconstructor::AddHitsForRecFromTrackRef(TTree *TTR, Int_t signal) |
a9e2aefa | 535 | { |
536 | // To add to the list of hits for reconstruction | |
29fc2c86 | 537 | // the signal hits from a track reference tree TreeTR. |
538 | TClonesArray *listOfTrackRefs = NULL; | |
539 | AliTrackReference *trackRef; | |
540 | ||
541 | Int_t track = 0; | |
b840996b | 542 | AliDebug(2,Form("Enter AddHitsForRecFromTrackRef with TTR: %d", TTR)); |
29fc2c86 | 543 | if (TTR == NULL) return; |
544 | ||
545 | listOfTrackRefs = CleanTrackRefs(TTR); | |
1391e633 | 546 | |
29fc2c86 | 547 | Int_t ntracks = listOfTrackRefs->GetEntriesFast(); |
a9e2aefa | 548 | |
b840996b | 549 | AliDebug(2,Form("ntracks: %d", ntracks)); |
29fc2c86 | 550 | |
551 | for (Int_t index = 0; index < ntracks; index++) { | |
552 | trackRef = (AliTrackReference*) listOfTrackRefs->At(index); | |
553 | track = trackRef->GetTrack(); | |
554 | ||
555 | NewHitForRecFromTrackRef(trackRef,track,signal); | |
556 | } // end of track ref. | |
557 | ||
558 | listOfTrackRefs->Delete(); | |
559 | delete listOfTrackRefs; | |
a9e2aefa | 560 | return; |
561 | } | |
562 | ||
29fc2c86 | 563 | |
a9e2aefa | 564 | //__________________________________________________________________________ |
29fc2c86 | 565 | AliMUONHitForRec* AliMUONEventReconstructor::NewHitForRecFromTrackRef(AliTrackReference* Hit, Int_t TrackNumber, Int_t Signal) |
a9e2aefa | 566 | { |
29fc2c86 | 567 | // To make a new hit for reconstruction from a track ref. hit pointed to by "Hit", |
568 | // with the track numbered "TrackNumber", | |
a9e2aefa | 569 | // either from signal ("Signal" = 1) or background ("Signal" = 0) event. |
570 | // Selects hits in tracking (not trigger) chambers. | |
571 | // Takes into account the efficiency (fEfficiency) | |
572 | // and the smearing from resolution (fBendingResolution and fNonBendingResolution). | |
573 | // Adds a condition on the radius between RMin and RMax | |
574 | // to better simulate the real chambers. | |
575 | // Returns the pointer to the new hit for reconstruction, | |
576 | // or NULL in case of inefficiency or non tracking chamber or bad radius. | |
577 | // No condition on at most 20 cm from a muon from a resonance | |
578 | // like in Fortran TRACKF_STAT. | |
579 | AliMUONHitForRec* hitForRec; | |
580 | Double_t bendCoor, nonBendCoor, radius; | |
29fc2c86 | 581 | Int_t chamber = AliMUONConstants::ChamberNumber(Hit->Z()); // chamber(0...) |
582 | if (chamber < 0) return NULL; | |
a9e2aefa | 583 | // only in tracking chambers (fChamber starts at 1) |
343146bf | 584 | if (chamber >= fgkMaxMuonTrackingChambers) return NULL; |
a9e2aefa | 585 | // only if hit is efficient (keep track for checking ????) |
586 | if (gRandom->Rndm() > fEfficiency) return NULL; | |
587 | // only if radius between RMin and RMax | |
94de3818 | 588 | bendCoor = Hit->Y(); |
589 | nonBendCoor = Hit->X(); | |
a9e2aefa | 590 | radius = TMath::Sqrt((bendCoor * bendCoor) + (nonBendCoor * nonBendCoor)); |
d0bfce8d | 591 | // This cut is not needed with a realistic chamber geometry !!!! |
592 | // if ((radius < fRMin[chamber]) || (radius > fRMax[chamber])) return NULL; | |
29fc2c86 | 593 | // new AliMUONHitForRec from track ref. hit and increment number of AliMUONHitForRec's |
a9e2aefa | 594 | hitForRec = new ((*fHitsForRecPtr)[fNHitsForRec]) AliMUONHitForRec(Hit); |
595 | fNHitsForRec++; | |
596 | // add smearing from resolution | |
597 | hitForRec->SetBendingCoor(bendCoor + gRandom->Gaus(0., fBendingResolution)); | |
598 | hitForRec->SetNonBendingCoor(nonBendCoor | |
599 | + gRandom->Gaus(0., fNonBendingResolution)); | |
d0bfce8d | 600 | // // !!!! without smearing |
601 | // hitForRec->SetBendingCoor(bendCoor); | |
602 | // hitForRec->SetNonBendingCoor(nonBendCoor); | |
a9e2aefa | 603 | // more information into HitForRec |
604 | // resolution: angular effect to be added here ???? | |
605 | hitForRec->SetBendingReso2(fBendingResolution * fBendingResolution); | |
606 | hitForRec->SetNonBendingReso2(fNonBendingResolution * fNonBendingResolution); | |
29fc2c86 | 607 | // track ref. info |
608 | hitForRec->SetTTRTrack(TrackNumber); | |
609 | hitForRec->SetTrackRefSignal(Signal); | |
b840996b | 610 | if (AliLog::GetGlobalDebugLevel()> 1) { |
611 | AliDebug(2,Form("Track: %d", TrackNumber)); | |
a9e2aefa | 612 | Hit->Dump(); |
613 | cout << "AliMUONHitForRec number (1...): " << fNHitsForRec << endl; | |
b840996b | 614 | hitForRec->Dump(); |
615 | } | |
a9e2aefa | 616 | return hitForRec; |
617 | } | |
29fc2c86 | 618 | //__________________________________________________________________________ |
619 | TClonesArray* AliMUONEventReconstructor::CleanTrackRefs(TTree *treeTR) | |
620 | { | |
621 | // Make hits from track ref.. | |
622 | // Re-calculate hits parameters because two AliTrackReferences are recorded for | |
623 | // each chamber (one when particle is entering + one when particle is leaving | |
624 | // the sensitive volume) | |
625 | ||
626 | AliTrackReference *trackReference; | |
627 | Float_t x1, y1, z1, pX1, pY1, pZ1; | |
628 | Float_t x2, y2, z2, pX2, pY2, pZ2; | |
629 | Int_t track1, track2; | |
630 | Int_t nRec = 0; | |
631 | Float_t maxGasGap = 1.; // cm | |
632 | Int_t iHit1 = 0; | |
633 | Int_t iHitMin = 0; | |
634 | ||
635 | AliTrackReference *trackReferenceNew = new AliTrackReference(); | |
636 | ||
637 | TClonesArray* trackRefs = new TClonesArray("AliTrackReference", 10); | |
638 | TClonesArray* cleanTrackRefs = new TClonesArray("AliTrackReference", 10); | |
639 | ||
640 | if (treeTR == NULL) return NULL; | |
641 | TBranch* branch = treeTR->GetBranch("MUON"); | |
642 | if (branch == NULL) return NULL; | |
643 | branch->SetAddress(&trackRefs); | |
644 | ||
645 | Int_t nTrack = (Int_t)treeTR->GetEntries(); | |
646 | for (Int_t iTrack = 0; iTrack < nTrack; iTrack++) { | |
647 | treeTR->GetEntry(iTrack); | |
648 | iHitMin = 0; | |
649 | iHit1 = 0; | |
650 | while (iHit1 < trackRefs->GetEntries()) { | |
651 | trackReference = (AliTrackReference*)trackRefs->At(iHit1); | |
652 | x1 = trackReference->X(); | |
653 | y1 = trackReference->Y(); | |
654 | z1 = trackReference->Z(); | |
655 | pX1 = trackReference->Px(); | |
656 | pY1 = trackReference->Py(); | |
657 | pZ1 = trackReference->Pz(); | |
658 | track1 = trackReference->GetTrack(); | |
659 | nRec = 1; | |
660 | iHitMin = iHit1+1; | |
661 | for (Int_t iHit2 = iHit1+1; iHit2 < trackRefs->GetEntries(); iHit2++) { | |
662 | trackReference = (AliTrackReference*)trackRefs->At(iHit2); | |
663 | x2 = trackReference->X(); | |
664 | y2 = trackReference->Y(); | |
665 | z2 = trackReference->Z(); | |
666 | pX2 = trackReference->Px(); | |
667 | pY2 = trackReference->Py(); | |
668 | pZ2 = trackReference->Pz(); | |
669 | track2 = trackReference->GetTrack(); | |
670 | if (track2 == track1 && TMath::Abs(z2-z1) < maxGasGap ) { | |
671 | nRec++; | |
672 | x1 += x2; | |
673 | y1 += y2; | |
674 | z1 += z2; | |
675 | pX1 += pX2; | |
676 | pY1 += pY2; | |
677 | pZ1 += pZ2; | |
678 | iHitMin = iHit2+1; | |
679 | } | |
680 | ||
681 | } // for iHit2 | |
682 | x1 /= (Float_t)nRec; | |
683 | y1 /= (Float_t)nRec; | |
684 | z1 /= (Float_t)nRec; | |
685 | pX1 /= (Float_t)nRec; | |
686 | pY1 /= (Float_t)nRec; | |
687 | pZ1 /= (Float_t)nRec; | |
688 | trackReferenceNew->SetPosition(x1,y1,z1); | |
689 | trackReferenceNew->SetMomentum(pX1,pY1,pZ1); | |
690 | trackReferenceNew->SetTrack(track1); | |
691 | {new ((*cleanTrackRefs)[cleanTrackRefs->GetEntriesFast()]) AliTrackReference(*trackReferenceNew);} | |
692 | iHit1 = iHitMin; | |
693 | } // while iHit1 | |
694 | } // for track | |
695 | ||
696 | trackRefs->Delete(); | |
697 | delete trackRefs; | |
698 | delete trackReferenceNew; | |
699 | return cleanTrackRefs; | |
700 | ||
701 | } | |
a9e2aefa | 702 | //__________________________________________________________________________ |
703 | void AliMUONEventReconstructor::SortHitsForRecWithIncreasingChamber() | |
704 | { | |
705 | // Sort HitsForRec's in increasing order with respect to chamber number. | |
706 | // Uses the function "Compare". | |
707 | // Update the information for HitsForRec per chamber too. | |
708 | Int_t ch, nhits, prevch; | |
709 | fHitsForRecPtr->Sort(); | |
343146bf | 710 | for (ch = 0; ch < fgkMaxMuonTrackingChambers; ch++) { |
a9e2aefa | 711 | fNHitsForRecPerChamber[ch] = 0; |
712 | fIndexOfFirstHitForRecPerChamber[ch] = 0; | |
713 | } | |
714 | prevch = 0; // previous chamber | |
715 | nhits = 0; // number of hits in current chamber | |
716 | // Loop over HitsForRec | |
717 | for (Int_t hit = 0; hit < fNHitsForRec; hit++) { | |
718 | // chamber number (0...) | |
719 | ch = ((AliMUONHitForRec*) ((*fHitsForRecPtr)[hit]))->GetChamberNumber(); | |
720 | // increment number of hits in current chamber | |
721 | (fNHitsForRecPerChamber[ch])++; | |
722 | // update index of first HitForRec in current chamber | |
723 | // if chamber number different from previous one | |
724 | if (ch != prevch) { | |
725 | fIndexOfFirstHitForRecPerChamber[ch] = hit; | |
726 | prevch = ch; | |
727 | } | |
728 | } | |
729 | return; | |
730 | } | |
731 | ||
732 | // //__________________________________________________________________________ | |
733 | // void AliMUONEventReconstructor::AddHitsForRecFromCathodeCorrelations(TTree* TC) | |
734 | // { | |
735 | // // OLD VERSION WHEN ONE ONE WAS USING SO CALLED CATHODE CORRELATIONS | |
736 | // // To add to the list of hits for reconstruction | |
737 | // // the (cathode correlated) raw clusters | |
738 | // // No condition added, like in Fortran TRACKF_STAT, | |
739 | // // on the radius between RMin and RMax. | |
740 | // AliMUONHitForRec *hitForRec; | |
741 | // if (fPrintLevel >= 1) cout << "enter AddHitsForRecFromCathodeCorrelations" << endl; | |
742 | // AliMUON *MUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? | |
743 | // // Security on MUON ???? | |
744 | // // Loop over tracking chambers | |
343146bf | 745 | // for (Int_t ch = 0; ch < fgkMaxMuonTrackingChambers; ch++) { |
a9e2aefa | 746 | // // number of HitsForRec to 0 for the chamber |
747 | // fNHitsForRecPerChamber[ch] = 0; | |
748 | // // index of first HitForRec for the chamber | |
749 | // if (ch == 0) fIndexOfFirstHitForRecPerChamber[ch] = 0; | |
750 | // else fIndexOfFirstHitForRecPerChamber[ch] = fNHitsForRec; | |
751 | // TClonesArray *reconst_hits = MUON->ReconstHitsAddress(ch); | |
752 | // MUON->ResetReconstHits(); | |
753 | // TC->GetEvent(); | |
754 | // Int_t ncor = (Int_t)reconst_hits->GetEntries(); | |
755 | // // Loop over (cathode correlated) raw clusters | |
756 | // for (Int_t cor = 0; cor < ncor; cor++) { | |
757 | // AliMUONReconstHit * mCor = | |
758 | // (AliMUONReconstHit*) reconst_hits->UncheckedAt(cor); | |
759 | // // new AliMUONHitForRec from (cathode correlated) raw cluster | |
760 | // // and increment number of AliMUONHitForRec's (total and in chamber) | |
761 | // hitForRec = new ((*fHitsForRecPtr)[fNHitsForRec]) AliMUONHitForRec(mCor); | |
762 | // fNHitsForRec++; | |
763 | // (fNHitsForRecPerChamber[ch])++; | |
764 | // // more information into HitForRec | |
765 | // hitForRec->SetChamberNumber(ch); | |
766 | // hitForRec->SetHitNumber(cor); | |
29fc2c86 | 767 | // // Z coordinate of the chamber (cm) with sign opposite to TRACKREF sign |
a9e2aefa | 768 | // // could (should) be more exact from chamber geometry ???? |
769 | // hitForRec->SetZ(-(&(MUON->Chamber(ch)))->Z()); | |
770 | // if (fPrintLevel >= 10) { | |
771 | // cout << "chamber (0...): " << ch << | |
772 | // " cathcorrel (0...): " << cor << endl; | |
773 | // mCor->Dump(); | |
774 | // cout << "AliMUONHitForRec number (1...): " << fNHitsForRec << endl; | |
775 | // hitForRec->Dump();} | |
776 | // } // end of cluster loop | |
777 | // } // end of chamber loop | |
778 | // return; | |
779 | // } | |
780 | ||
781 | //__________________________________________________________________________ | |
782 | void AliMUONEventReconstructor::AddHitsForRecFromRawClusters(TTree* TR) | |
783 | { | |
784 | // To add to the list of hits for reconstruction all the raw clusters | |
785 | // No condition added, like in Fortran TRACKF_STAT, | |
786 | // on the radius between RMin and RMax. | |
787 | AliMUONHitForRec *hitForRec; | |
788 | AliMUONRawCluster *clus; | |
f69d51b5 | 789 | Int_t iclus, nclus, nTRentries; |
a9e2aefa | 790 | TClonesArray *rawclusters; |
b840996b | 791 | AliDebug(1,"Enter AddHitsForRecFromRawClusters"); |
88cb7938 | 792 | |
e191bb57 | 793 | // TString evfoldname = AliConfig::GetDefaultEventFolderName();//to be interfaced properly |
52c9bc11 | 794 | // AliRunLoader* rl = AliRunLoader::GetRunLoader(evfoldname); |
795 | // if (rl == 0x0) | |
796 | // { | |
797 | // Error("MakeEventToBeReconstructed", | |
798 | // "Can not find Run Loader in Event Folder named %s.", | |
799 | // evfoldname.Data()); | |
800 | // return; | |
801 | // } | |
802 | // AliLoader* gime = rl->GetLoader("MUONLoader"); | |
803 | // if (gime == 0x0) | |
804 | // { | |
805 | // Error("MakeEventToBeReconstructed","Can not get MUON Loader from Run Loader."); | |
806 | // return; | |
807 | // } | |
808 | // // Loading AliRun master | |
809 | // rl->LoadgAlice(); | |
810 | // gAlice = rl->GetAliRun(); | |
88cb7938 | 811 | |
812 | // Loading MUON subsystem | |
52c9bc11 | 813 | // AliMUON * pMUON = (AliMUON *) gAlice->GetDetector("MUON"); |
88cb7938 | 814 | |
f69d51b5 | 815 | nTRentries = Int_t(TR->GetEntries()); |
816 | if (nTRentries != 1) { | |
8c343c7c | 817 | AliError(Form("nTRentries = %d not equal to 1 ",nTRentries)); |
f69d51b5 | 818 | exit(0); |
819 | } | |
52c9bc11 | 820 | fLoader->TreeR()->GetEvent(0); // only one entry |
821 | ||
a9e2aefa | 822 | // Loop over tracking chambers |
343146bf | 823 | for (Int_t ch = 0; ch < fgkMaxMuonTrackingChambers; ch++) { |
a9e2aefa | 824 | // number of HitsForRec to 0 for the chamber |
825 | fNHitsForRecPerChamber[ch] = 0; | |
826 | // index of first HitForRec for the chamber | |
827 | if (ch == 0) fIndexOfFirstHitForRecPerChamber[ch] = 0; | |
828 | else fIndexOfFirstHitForRecPerChamber[ch] = fNHitsForRec; | |
52c9bc11 | 829 | rawclusters =fMUONData->RawClusters(ch); |
f69d51b5 | 830 | // pMUON->ResetRawClusters(); |
831 | // TR->GetEvent((Int_t) (TR->GetEntries()) - 1); // to be checked ???? | |
a9e2aefa | 832 | nclus = (Int_t) (rawclusters->GetEntries()); |
833 | // Loop over (cathode correlated) raw clusters | |
834 | for (iclus = 0; iclus < nclus; iclus++) { | |
835 | clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(iclus); | |
836 | // new AliMUONHitForRec from raw cluster | |
837 | // and increment number of AliMUONHitForRec's (total and in chamber) | |
838 | hitForRec = new ((*fHitsForRecPtr)[fNHitsForRec]) AliMUONHitForRec(clus); | |
839 | fNHitsForRec++; | |
840 | (fNHitsForRecPerChamber[ch])++; | |
841 | // more information into HitForRec | |
842 | // resolution: info should be already in raw cluster and taken from it ???? | |
843 | hitForRec->SetBendingReso2(fBendingResolution * fBendingResolution); | |
844 | hitForRec->SetNonBendingReso2(fNonBendingResolution * fNonBendingResolution); | |
845 | // original raw cluster | |
846 | hitForRec->SetChamberNumber(ch); | |
847 | hitForRec->SetHitNumber(iclus); | |
ba5b68db | 848 | // Z coordinate of the raw cluster (cm) |
ba12c242 | 849 | hitForRec->SetZ(clus->GetZ(0)); |
b840996b | 850 | if (AliLog::GetGlobalDebugLevel() > 1) { |
a9e2aefa | 851 | cout << "chamber (0...): " << ch << |
852 | " raw cluster (0...): " << iclus << endl; | |
853 | clus->Dump(); | |
854 | cout << "AliMUONHitForRec number (1...): " << fNHitsForRec << endl; | |
855 | hitForRec->Dump();} | |
856 | } // end of cluster loop | |
857 | } // end of chamber loop | |
83dbc640 | 858 | SortHitsForRecWithIncreasingChamber(); //AZ |
a9e2aefa | 859 | return; |
860 | } | |
861 | ||
862 | //__________________________________________________________________________ | |
863 | void AliMUONEventReconstructor::MakeSegments(void) | |
864 | { | |
865 | // To make the list of segments in all stations, | |
866 | // from the list of hits to be reconstructed | |
b840996b | 867 | AliDebug(1,"Enter MakeSegments"); |
a9e2aefa | 868 | ResetSegments(); |
869 | // Loop over stations | |
83dbc640 | 870 | Int_t nb = (fTrackMethod == 2) ? 3 : 0; //AZ |
30178c30 | 871 | //AZ for (Int_t st = 0; st < fgkMaxMuonTrackingStations; st++) |
872 | for (Int_t st = nb; st < fgkMaxMuonTrackingStations; st++) //AZ | |
a9e2aefa | 873 | MakeSegmentsPerStation(st); |
b840996b | 874 | if (AliLog::GetGlobalDebugLevel() > 1) { |
a9e2aefa | 875 | cout << "end of MakeSegments" << endl; |
30178c30 | 876 | for (Int_t st = 0; st < fgkMaxMuonTrackingStations; st++) { |
a9e2aefa | 877 | cout << "station(0...): " << st |
878 | << " Segments: " << fNSegments[st] | |
879 | << endl; | |
880 | for (Int_t seg = 0; | |
881 | seg < fNSegments[st]; | |
882 | seg++) { | |
883 | cout << "Segment index(0...): " << seg << endl; | |
884 | ((*fSegmentsPtr[st])[seg])->Dump(); | |
885 | } | |
886 | } | |
887 | } | |
888 | return; | |
889 | } | |
890 | ||
891 | //__________________________________________________________________________ | |
892 | void AliMUONEventReconstructor::MakeSegmentsPerStation(Int_t Station) | |
893 | { | |
894 | // To make the list of segments in station number "Station" (0...) | |
895 | // from the list of hits to be reconstructed. | |
896 | // Updates "fNSegments"[Station]. | |
897 | // Segments in stations 4 and 5 are sorted | |
898 | // according to increasing absolute value of "impact parameter" | |
899 | AliMUONHitForRec *hit1Ptr, *hit2Ptr; | |
900 | AliMUONSegment *segment; | |
901 | Bool_t last2st; | |
902 | Double_t bendingSlope, distBend, distNonBend, extBendCoor, extNonBendCoor, | |
d0bfce8d | 903 | impactParam = 0., maxImpactParam = 0., minImpactParam = 0.; // =0 to avoid compilation warnings. |
b840996b | 904 | AliDebug(1,Form("Enter MakeSegmentsPerStation (0...) %d",Station)); |
a9e2aefa | 905 | // first and second chambers (0...) in the station |
906 | Int_t ch1 = 2 * Station; | |
907 | Int_t ch2 = ch1 + 1; | |
908 | // variable true for stations downstream of the dipole: | |
909 | // Station(0..4) equal to 3 or 4 | |
910 | if ((Station == 3) || (Station == 4)) { | |
911 | last2st = kTRUE; | |
912 | // maximum impact parameter (cm) according to fMinBendingMomentum... | |
913 | maxImpactParam = | |
914 | TMath::Abs(GetImpactParamFromBendingMomentum(fMinBendingMomentum)); | |
d0bfce8d | 915 | // minimum impact parameter (cm) according to fMaxBendingMomentum... |
916 | minImpactParam = | |
917 | TMath::Abs(GetImpactParamFromBendingMomentum(fMaxBendingMomentum)); | |
a9e2aefa | 918 | } |
919 | else last2st = kFALSE; | |
920 | // extrapolation factor from Z of first chamber to Z of second chamber | |
921 | // dZ to be changed to take into account fine structure of chambers ???? | |
e516b01d | 922 | Double_t extrapFact; |
a9e2aefa | 923 | // index for current segment |
924 | Int_t segmentIndex = 0; | |
925 | // Loop over HitsForRec in the first chamber of the station | |
926 | for (Int_t hit1 = fIndexOfFirstHitForRecPerChamber[ch1]; | |
927 | hit1 < fIndexOfFirstHitForRecPerChamber[ch1] + fNHitsForRecPerChamber[ch1]; | |
928 | hit1++) { | |
929 | // pointer to the HitForRec | |
930 | hit1Ptr = (AliMUONHitForRec*) ((*fHitsForRecPtr)[hit1]); | |
931 | // extrapolation, | |
932 | // on the straight line joining the HitForRec to the vertex (0,0,0), | |
933 | // to the Z of the second chamber of the station | |
a9e2aefa | 934 | // Loop over HitsForRec in the second chamber of the station |
935 | for (Int_t hit2 = fIndexOfFirstHitForRecPerChamber[ch2]; | |
936 | hit2 < fIndexOfFirstHitForRecPerChamber[ch2] + fNHitsForRecPerChamber[ch2]; | |
937 | hit2++) { | |
938 | // pointer to the HitForRec | |
939 | hit2Ptr = (AliMUONHitForRec*) ((*fHitsForRecPtr)[hit2]); | |
940 | // absolute values of distances, in bending and non bending planes, | |
941 | // between the HitForRec in the second chamber | |
942 | // and the previous extrapolation | |
e516b01d | 943 | extrapFact = hit2Ptr->GetZ()/ hit1Ptr->GetZ(); |
944 | extBendCoor = extrapFact * hit1Ptr->GetBendingCoor(); | |
945 | extNonBendCoor = extrapFact * hit1Ptr->GetNonBendingCoor(); | |
a9e2aefa | 946 | distBend = TMath::Abs(hit2Ptr->GetBendingCoor() - extBendCoor); |
947 | distNonBend = TMath::Abs(hit2Ptr->GetNonBendingCoor() - extNonBendCoor); | |
948 | if (last2st) { | |
949 | // bending slope | |
950 | bendingSlope = (hit1Ptr->GetBendingCoor() - hit2Ptr->GetBendingCoor()) / | |
951 | (hit1Ptr->GetZ() - hit2Ptr->GetZ()); | |
952 | // absolute value of impact parameter | |
953 | impactParam = | |
31817925 | 954 | TMath::Abs(hit1Ptr->GetBendingCoor() - hit1Ptr->GetZ() * bendingSlope); |
a9e2aefa | 955 | } |
956 | // check for distances not too large, | |
957 | // and impact parameter not too big if stations downstream of the dipole. | |
958 | // Conditions "distBend" and "impactParam" correlated for these stations ???? | |
959 | if ((distBend < fSegmentMaxDistBending[Station]) && | |
960 | (distNonBend < fSegmentMaxDistNonBending[Station]) && | |
d0bfce8d | 961 | (!last2st || (impactParam < maxImpactParam)) && |
962 | (!last2st || (impactParam > minImpactParam))) { | |
a9e2aefa | 963 | // make new segment |
964 | segment = new ((*fSegmentsPtr[Station])[segmentIndex]) | |
965 | AliMUONSegment(hit1Ptr, hit2Ptr); | |
966 | // update "link" to this segment from the hit in the first chamber | |
967 | if (hit1Ptr->GetNSegments() == 0) | |
968 | hit1Ptr->SetIndexOfFirstSegment(segmentIndex); | |
969 | hit1Ptr->SetNSegments(hit1Ptr->GetNSegments() + 1); | |
b840996b | 970 | if (AliLog::GetGlobalDebugLevel() > 1) { |
a9e2aefa | 971 | cout << "segmentIndex(0...): " << segmentIndex |
972 | << " distBend: " << distBend | |
973 | << " distNonBend: " << distNonBend | |
974 | << endl; | |
975 | segment->Dump(); | |
976 | cout << "HitForRec in first chamber" << endl; | |
977 | hit1Ptr->Dump(); | |
978 | cout << "HitForRec in second chamber" << endl; | |
979 | hit2Ptr->Dump(); | |
980 | }; | |
981 | // increment index for current segment | |
982 | segmentIndex++; | |
983 | } | |
984 | } //for (Int_t hit2 | |
985 | } // for (Int_t hit1... | |
986 | fNSegments[Station] = segmentIndex; | |
987 | // Sorting according to "impact parameter" if station(1..5) 4 or 5, | |
988 | // i.e. Station(0..4) 3 or 4, using the function "Compare". | |
989 | // After this sorting, it is impossible to use | |
990 | // the "fNSegments" and "fIndexOfFirstSegment" | |
991 | // of the HitForRec in the first chamber to explore all segments formed with it. | |
992 | // Is this sorting really needed ???? | |
993 | if ((Station == 3) || (Station == 4)) (fSegmentsPtr[Station])->Sort(); | |
b840996b | 994 | AliDebug(1,Form("Station: %d NSegments: %d ", Station, fNSegments[Station])); |
a9e2aefa | 995 | return; |
996 | } | |
997 | ||
998 | //__________________________________________________________________________ | |
999 | void AliMUONEventReconstructor::MakeTracks(void) | |
1000 | { | |
1001 | // To make the tracks, | |
1002 | // from the list of segments and points in all stations | |
b840996b | 1003 | AliDebug(1,"Enter MakeTracks"); |
8429a5e4 | 1004 | // The order may be important for the following Reset's |
a9e2aefa | 1005 | ResetTracks(); |
8429a5e4 | 1006 | ResetTrackHits(); |
83dbc640 | 1007 | if (fTrackMethod == 2) { //AZ - Kalman filter |
1008 | MakeTrackCandidatesK(); | |
b035a148 | 1009 | if (fRecTracksPtr->GetEntriesFast() == 0) return; |
83dbc640 | 1010 | // Follow tracks in stations(1..) 3, 2 and 1 |
1011 | FollowTracksK(); | |
1012 | // Remove double tracks | |
1013 | RemoveDoubleTracksK(); | |
1014 | // Propagate tracks to the vertex thru absorber | |
1015 | GoToVertex(); | |
b035a148 | 1016 | // Fill AliMUONTrack data members |
1017 | FillMUONTrack(); | |
d837040f | 1018 | } else { |
83dbc640 | 1019 | // Look for candidates from at least 3 aligned points in stations(1..) 4 and 5 |
1020 | MakeTrackCandidates(); | |
1021 | // Follow tracks in stations(1..) 3, 2 and 1 | |
1022 | FollowTracks(); | |
1023 | // Remove double tracks | |
1024 | RemoveDoubleTracks(); | |
d837040f | 1025 | UpdateTrackParamAtHit(); |
b8dc484b | 1026 | UpdateHitForRecAtHit(); |
52c9bc11 | 1027 | } |
a9e2aefa | 1028 | return; |
1029 | } | |
1030 | ||
276c44b7 | 1031 | //__________________________________________________________________________ |
d837040f | 1032 | void AliMUONEventReconstructor::ValidateTracksWithTrigger(void) |
1033 | { | |
7e6d7e07 | 1034 | // Try to match track from tracking system with trigger track |
d837040f | 1035 | AliMUONTrack *track; |
24ab3324 | 1036 | TClonesArray *recTriggerTracks; |
1037 | ||
1038 | fMUONData->ResetRecTriggerTracks(); | |
1039 | fMUONData->SetTreeAddress("RL"); | |
1040 | fMUONData->GetRecTriggerTracks(); | |
1041 | recTriggerTracks = fMUONData->RecTriggerTracks(); | |
e8765288 | 1042 | |
d837040f | 1043 | track = (AliMUONTrack*) fRecTracksPtr->First(); |
1044 | while (track) { | |
1045 | track->MatchTriggerTrack(recTriggerTracks); | |
1046 | track = (AliMUONTrack*) fRecTracksPtr->After(track); | |
e8765288 | 1047 | } |
24ab3324 | 1048 | |
d837040f | 1049 | } |
1050 | ||
1051 | //__________________________________________________________________________ | |
1052 | Bool_t AliMUONEventReconstructor::MakeTriggerTracks(void) | |
276c44b7 | 1053 | { |
1054 | // To make the trigger tracks from Local Trigger | |
b840996b | 1055 | AliDebug(1, "Enter MakeTriggerTracks"); |
52c9bc11 | 1056 | // ResetTriggerTracks(); |
276c44b7 | 1057 | |
1058 | Int_t nTRentries; | |
52c9bc11 | 1059 | Long_t gloTrigPat; |
276c44b7 | 1060 | TClonesArray *localTrigger; |
9131b4fe | 1061 | TClonesArray *globalTrigger; |
276c44b7 | 1062 | AliMUONLocalTrigger *locTrg; |
9131b4fe | 1063 | AliMUONGlobalTrigger *gloTrg; |
276c44b7 | 1064 | AliMUONTriggerCircuit *circuit; |
52c9bc11 | 1065 | AliMUONTriggerTrack *recTriggerTrack = 0; |
d837040f | 1066 | |
30178c30 | 1067 | TTree* treeR = fLoader->TreeR(); |
276c44b7 | 1068 | |
276c44b7 | 1069 | // Loading MUON subsystem |
1070 | AliMUON * pMUON = (AliMUON *) gAlice->GetDetector("MUON"); | |
1071 | ||
30178c30 | 1072 | nTRentries = Int_t(treeR->GetEntries()); |
d837040f | 1073 | |
30178c30 | 1074 | treeR->GetEvent(0); // only one entry |
d837040f | 1075 | |
1076 | if (!(fMUONData->IsTriggerBranchesInTree())) { | |
8c343c7c | 1077 | AliWarning(Form("Trigger information is not avalaible, nTRentries = %d not equal to 1",nTRentries)); |
d837040f | 1078 | return kFALSE; |
276c44b7 | 1079 | } |
276c44b7 | 1080 | |
ce3e25a8 | 1081 | fMUONData->SetTreeAddress("TC"); |
52c9bc11 | 1082 | fMUONData->GetTrigger(); |
9131b4fe | 1083 | |
52c9bc11 | 1084 | // global trigger for trigger pattern |
9131b4fe | 1085 | gloTrigPat = 0; |
52c9bc11 | 1086 | globalTrigger = fMUONData->GlobalTrigger(); |
9131b4fe | 1087 | gloTrg = (AliMUONGlobalTrigger*)globalTrigger->UncheckedAt(0); |
8efb0686 | 1088 | if (gloTrg) { |
1089 | if (gloTrg->SinglePlusLpt()) gloTrigPat|= 0x1; | |
1090 | if (gloTrg->SinglePlusHpt()) gloTrigPat|= 0x2; | |
1091 | if (gloTrg->SinglePlusApt()) gloTrigPat|= 0x4; | |
1092 | ||
1093 | if (gloTrg->SingleMinusLpt()) gloTrigPat|= 0x8; | |
1094 | if (gloTrg->SingleMinusHpt()) gloTrigPat|= 0x10; | |
1095 | if (gloTrg->SingleMinusApt()) gloTrigPat|= 0x20; | |
1096 | ||
1097 | if (gloTrg->SingleUndefLpt()) gloTrigPat|= 0x40; | |
1098 | if (gloTrg->SingleUndefHpt()) gloTrigPat|= 0x80; | |
1099 | if (gloTrg->SingleUndefApt()) gloTrigPat|= 0x100; | |
1100 | ||
1101 | if (gloTrg->PairUnlikeLpt()) gloTrigPat|= 0x200; | |
1102 | if (gloTrg->PairUnlikeHpt()) gloTrigPat|= 0x400; | |
1103 | if (gloTrg->PairUnlikeApt()) gloTrigPat|= 0x800; | |
1104 | ||
1105 | if (gloTrg->PairLikeLpt()) gloTrigPat|= 0x1000; | |
1106 | if (gloTrg->PairLikeHpt()) gloTrigPat|= 0x2000; | |
1107 | if (gloTrg->PairLikeApt()) gloTrigPat|= 0x4000; | |
1108 | } | |
9131b4fe | 1109 | |
52c9bc11 | 1110 | |
1111 | ||
1112 | // local trigger for tracking | |
1113 | localTrigger = fMUONData->LocalTrigger(); | |
276c44b7 | 1114 | Int_t nlocals = (Int_t) (localTrigger->GetEntries()); |
1115 | Float_t z11 = ( &(pMUON->Chamber(10)) )->Z(); | |
1116 | Float_t z21 = ( &(pMUON->Chamber(12)) )->Z(); | |
1117 | ||
1118 | for (Int_t i=0; i<nlocals; i++) { // loop on Local Trigger | |
52c9bc11 | 1119 | locTrg = (AliMUONLocalTrigger*)localTrigger->UncheckedAt(i); |
1120 | circuit = &(pMUON->TriggerCircuit(locTrg->LoCircuit())); | |
1121 | Float_t y11 = circuit->GetY11Pos(locTrg->LoStripX()); | |
aeb4f510 | 1122 | Int_t stripX21 = locTrg->LoStripX()+locTrg->LoDev()+1; |
1123 | Float_t y21 = circuit->GetY21Pos(stripX21); | |
52c9bc11 | 1124 | Float_t x11 = circuit->GetX11Pos(locTrg->LoStripY()); |
1125 | Float_t thetax = TMath::ATan2( x11 , z11 ); | |
1126 | Float_t thetay = TMath::ATan2( (y21-y11) , (z21-z11) ); | |
1127 | ||
1128 | recTriggerTrack = new AliMUONTriggerTrack(x11,y11,thetax,thetay,gloTrigPat,this); | |
1129 | // since static statement does not work, set gloTrigPat for each track | |
1130 | ||
1131 | // fNRecTriggerTracks++; | |
1132 | fMUONData->AddRecTriggerTrack(*recTriggerTrack); | |
276c44b7 | 1133 | } // end of loop on Local Trigger |
d837040f | 1134 | return kTRUE; |
276c44b7 | 1135 | } |
1136 | ||
a9e2aefa | 1137 | //__________________________________________________________________________ |
1138 | Int_t AliMUONEventReconstructor::MakeTrackCandidatesWithTwoSegments(AliMUONSegment *BegSegment) | |
1139 | { | |
1140 | // To make track candidates with two segments in stations(1..) 4 and 5, | |
1141 | // the first segment being pointed to by "BegSegment". | |
1142 | // Returns the number of such track candidates. | |
1143 | Int_t endStation, iEndSegment, nbCan2Seg; | |
e516b01d | 1144 | AliMUONSegment *endSegment; |
1145 | AliMUONSegment *extrapSegment = NULL; | |
a9e2aefa | 1146 | AliMUONTrack *recTrack; |
1147 | Double_t mcsFactor; | |
b840996b | 1148 | AliDebug(1,"Enter MakeTrackCandidatesWithTwoSegments"); |
a9e2aefa | 1149 | // Station for the end segment |
1150 | endStation = 7 - (BegSegment->GetHitForRec1())->GetChamberNumber() / 2; | |
1151 | // multiple scattering factor corresponding to one chamber | |
1152 | mcsFactor = 0.0136 / | |
1153 | GetBendingMomentumFromImpactParam(BegSegment->GetBendingImpact()); | |
1154 | mcsFactor = fChamberThicknessInX0 * mcsFactor * mcsFactor; | |
1155 | // linear extrapolation to end station | |
a9e2aefa | 1156 | // number of candidates with 2 segments to 0 |
1157 | nbCan2Seg = 0; | |
1158 | // Loop over segments in the end station | |
1159 | for (iEndSegment = 0; iEndSegment < fNSegments[endStation]; iEndSegment++) { | |
1160 | // pointer to segment | |
1161 | endSegment = (AliMUONSegment*) ((*fSegmentsPtr[endStation])[iEndSegment]); | |
1162 | // test compatibility between current segment and "extrapSegment" | |
04b5ea16 | 1163 | // 4 because 4 quantities in chi2 |
e516b01d | 1164 | extrapSegment = |
1165 | BegSegment->CreateSegmentFromLinearExtrapToStation(endSegment->GetZ(), mcsFactor); | |
a9e2aefa | 1166 | if ((endSegment-> |
1167 | NormalizedChi2WithSegment(extrapSegment, | |
1168 | fMaxSigma2Distance)) <= 4.0) { | |
1169 | // both segments compatible: | |
1170 | // make track candidate from "begSegment" and "endSegment" | |
b840996b | 1171 | AliDebug(2,Form("TrackCandidate with Segment %d in Station(0..) %d", iEndSegment, endStation)); |
a9e2aefa | 1172 | // flag for both segments in one track: |
1173 | // to be done in track constructor ???? | |
1174 | BegSegment->SetInTrack(kTRUE); | |
1175 | endSegment->SetInTrack(kTRUE); | |
1176 | recTrack = new ((*fRecTracksPtr)[fNRecTracks]) | |
1177 | AliMUONTrack(BegSegment, endSegment, this); | |
1178 | fNRecTracks++; | |
b840996b | 1179 | if (AliLog::GetGlobalDebugLevel() > 1) recTrack->RecursiveDump(); |
a9e2aefa | 1180 | // increment number of track candidates with 2 segments |
1181 | nbCan2Seg++; | |
1182 | } | |
ddf8948c | 1183 | delete extrapSegment; // should not delete HitForRec's it points to !!!! |
a9e2aefa | 1184 | } // for (iEndSegment = 0;... |
a9e2aefa | 1185 | return nbCan2Seg; |
1186 | } | |
1187 | ||
1188 | //__________________________________________________________________________ | |
1189 | Int_t AliMUONEventReconstructor::MakeTrackCandidatesWithOneSegmentAndOnePoint(AliMUONSegment *BegSegment) | |
1190 | { | |
1191 | // To make track candidates with one segment and one point | |
1192 | // in stations(1..) 4 and 5, | |
1193 | // the segment being pointed to by "BegSegment". | |
1194 | Int_t ch, ch1, ch2, endStation, iHit, iHitMax, iHitMin, nbCan1Seg1Hit; | |
e516b01d | 1195 | AliMUONHitForRec *extrapHitForRec= NULL; |
1196 | AliMUONHitForRec *hit; | |
a9e2aefa | 1197 | AliMUONTrack *recTrack; |
1198 | Double_t mcsFactor; | |
b840996b | 1199 | AliDebug(1,"Enter MakeTrackCandidatesWithOneSegmentAndOnePoint"); |
a9e2aefa | 1200 | // station for the end point |
1201 | endStation = 7 - (BegSegment->GetHitForRec1())->GetChamberNumber() / 2; | |
1202 | // multiple scattering factor corresponding to one chamber | |
1203 | mcsFactor = 0.0136 / | |
1204 | GetBendingMomentumFromImpactParam(BegSegment->GetBendingImpact()); | |
1205 | mcsFactor = fChamberThicknessInX0 * mcsFactor * mcsFactor; | |
1206 | // first and second chambers(0..) in the end station | |
1207 | ch1 = 2 * endStation; | |
1208 | ch2 = ch1 + 1; | |
1209 | // number of candidates to 0 | |
1210 | nbCan1Seg1Hit = 0; | |
1211 | // Loop over chambers of the end station | |
1212 | for (ch = ch2; ch >= ch1; ch--) { | |
a9e2aefa | 1213 | // limits for the hit index in the loop |
1214 | iHitMin = fIndexOfFirstHitForRecPerChamber[ch]; | |
1215 | iHitMax = iHitMin + fNHitsForRecPerChamber[ch]; | |
1216 | // Loop over HitForRec's in the chamber | |
1217 | for (iHit = iHitMin; iHit < iHitMax; iHit++) { | |
1218 | // pointer to HitForRec | |
1219 | hit = (AliMUONHitForRec*) ((*fHitsForRecPtr)[iHit]); | |
1220 | // test compatibility between current HitForRec and "extrapHitForRec" | |
04b5ea16 | 1221 | // 2 because 2 quantities in chi2 |
e516b01d | 1222 | // linear extrapolation to chamber |
1223 | extrapHitForRec = | |
1224 | BegSegment->CreateHitForRecFromLinearExtrapToChamber( hit->GetZ(), mcsFactor); | |
a9e2aefa | 1225 | if ((hit-> |
1226 | NormalizedChi2WithHitForRec(extrapHitForRec, | |
1227 | fMaxSigma2Distance)) <= 2.0) { | |
1228 | // both HitForRec's compatible: | |
1229 | // make track candidate from begSegment and current HitForRec | |
b840996b | 1230 | AliDebug(2, Form("TrackCandidate with HitForRec %d in Chamber(0..) %d", iHit, ch)); |
a9e2aefa | 1231 | // flag for beginning segments in one track: |
1232 | // to be done in track constructor ???? | |
1233 | BegSegment->SetInTrack(kTRUE); | |
1234 | recTrack = new ((*fRecTracksPtr)[fNRecTracks]) | |
1235 | AliMUONTrack(BegSegment, hit, this); | |
1236 | // the right place to eliminate "double counting" ???? how ???? | |
1237 | fNRecTracks++; | |
b840996b | 1238 | if (AliLog::GetGlobalDebugLevel() > 1) recTrack->RecursiveDump(); |
a9e2aefa | 1239 | // increment number of track candidates |
1240 | nbCan1Seg1Hit++; | |
1241 | } | |
ddf8948c | 1242 | delete extrapHitForRec; |
a9e2aefa | 1243 | } // for (iHit = iHitMin;... |
a9e2aefa | 1244 | } // for (ch = ch2;... |
1245 | return nbCan1Seg1Hit; | |
1246 | } | |
1247 | ||
1248 | //__________________________________________________________________________ | |
1249 | void AliMUONEventReconstructor::MakeTrackCandidates(void) | |
1250 | { | |
1251 | // To make track candidates | |
1252 | // with at least 3 aligned points in stations(1..) 4 and 5 | |
1253 | // (two Segment's or one Segment and one HitForRec) | |
1254 | Int_t begStation, iBegSegment, nbCan1Seg1Hit, nbCan2Seg; | |
1255 | AliMUONSegment *begSegment; | |
b840996b | 1256 | AliDebug(1,"Enter MakeTrackCandidates"); |
a9e2aefa | 1257 | // Loop over stations(1..) 5 and 4 for the beginning segment |
1258 | for (begStation = 4; begStation > 2; begStation--) { | |
1259 | // Loop over segments in the beginning station | |
1260 | for (iBegSegment = 0; iBegSegment < fNSegments[begStation]; iBegSegment++) { | |
1261 | // pointer to segment | |
1262 | begSegment = (AliMUONSegment*) ((*fSegmentsPtr[begStation])[iBegSegment]); | |
b840996b | 1263 | AliDebug(2,Form("Look for TrackCandidate's with Segment %d in Station(0..) %d", iBegSegment, begStation)); |
a9e2aefa | 1264 | // Look for track candidates with two segments, |
1265 | // "begSegment" and all compatible segments in other station. | |
1266 | // Only for beginning station(1..) 5 | |
1267 | // because candidates with 2 segments have to looked for only once. | |
1268 | if (begStation == 4) | |
1269 | nbCan2Seg = MakeTrackCandidatesWithTwoSegments(begSegment); | |
956019b6 | 1270 | // Look for track candidates with one segment and one point, |
a9e2aefa | 1271 | // "begSegment" and all compatible HitForRec's in other station. |
1272 | // Only if "begSegment" does not belong already to a track candidate. | |
1273 | // Is that a too strong condition ???? | |
1274 | if (!(begSegment->GetInTrack())) | |
1275 | nbCan1Seg1Hit = MakeTrackCandidatesWithOneSegmentAndOnePoint(begSegment); | |
1276 | } // for (iBegSegment = 0;... | |
1277 | } // for (begStation = 4;... | |
1278 | return; | |
1279 | } | |
1280 | ||
1281 | //__________________________________________________________________________ | |
1282 | void AliMUONEventReconstructor::FollowTracks(void) | |
1283 | { | |
1284 | // Follow tracks in stations(1..) 3, 2 and 1 | |
04b5ea16 | 1285 | // too long: should be made more modular !!!! |
e516b01d | 1286 | AliMUONHitForRec *bestHit, *extrapHit, *hit; |
1287 | AliMUONSegment *bestSegment, *extrapSegment, *segment; | |
04b5ea16 | 1288 | AliMUONTrack *track, *nextTrack; |
1289 | AliMUONTrackParam *trackParam1, trackParam[2], trackParamVertex; | |
ecfa008b | 1290 | // -1 to avoid compilation warnings |
1291 | Int_t ch = -1, chInStation, chBestHit = -1, iHit, iSegment, station, trackIndex; | |
04b5ea16 | 1292 | Double_t bestChi2, chi2, dZ1, dZ2, dZ3, maxSigma2Distance, mcsFactor; |
d0bfce8d | 1293 | Double_t bendingMomentum, chi2Norm = 0.; |
9cbdf048 | 1294 | AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? |
04b5ea16 | 1295 | // local maxSigma2Distance, for easy increase in testing |
1296 | maxSigma2Distance = fMaxSigma2Distance; | |
b840996b | 1297 | AliDebug(2,"Enter FollowTracks"); |
a9e2aefa | 1298 | // Loop over track candidates |
04b5ea16 | 1299 | track = (AliMUONTrack*) fRecTracksPtr->First(); |
1300 | trackIndex = -1; | |
1301 | while (track) { | |
1302 | // Follow function for each track candidate ???? | |
1303 | trackIndex++; | |
1304 | nextTrack = (AliMUONTrack*) fRecTracksPtr->After(track); // prepare next track | |
b840996b | 1305 | AliDebug(2,Form("FollowTracks: track candidate(0..): %d", trackIndex)); |
956019b6 | 1306 | // Fit track candidate |
1307 | track->SetFitMCS(0); // without multiple Coulomb scattering | |
1308 | track->SetFitNParam(3); // with 3 parameters (X = Y = 0) | |
1309 | track->SetFitStart(0); // from parameters at vertex | |
1310 | track->Fit(); | |
b840996b | 1311 | if (AliLog::GetGlobalDebugLevel()> 2) { |
a9e2aefa | 1312 | cout << "FollowTracks: track candidate(0..): " << trackIndex |
956019b6 | 1313 | << " after fit in stations(0..) 3 and 4" << endl; |
a9e2aefa | 1314 | track->RecursiveDump(); |
1315 | } | |
1316 | // Loop over stations(1..) 3, 2 and 1 | |
04b5ea16 | 1317 | // something SPECIAL for stations 2 and 1 for majority 3 coincidence ???? |
1318 | // otherwise: majority coincidence 2 !!!! | |
a9e2aefa | 1319 | for (station = 2; station >= 0; station--) { |
1320 | // Track parameters at first track hit (smallest Z) | |
1321 | trackParam1 = ((AliMUONTrackHit*) | |
1322 | (track->GetTrackHitsPtr()->First()))->GetTrackParam(); | |
1323 | // extrapolation to station | |
1324 | trackParam1->ExtrapToStation(station, trackParam); | |
79e1e601 | 1325 | extrapSegment = new AliMUONSegment(); // empty segment |
a9e2aefa | 1326 | // multiple scattering factor corresponding to one chamber |
1327 | // and momentum in bending plane (not total) | |
1328 | mcsFactor = 0.0136 * trackParam1->GetInverseBendingMomentum(); | |
1329 | mcsFactor = fChamberThicknessInX0 * mcsFactor * mcsFactor; | |
1330 | // Z difference from previous station | |
9cbdf048 | 1331 | dZ1 = (&(pMUON->Chamber(2 * station)))->Z() - |
1332 | (&(pMUON->Chamber(2 * station + 2)))->Z(); | |
a9e2aefa | 1333 | // Z difference between the two previous stations |
9cbdf048 | 1334 | dZ2 = (&(pMUON->Chamber(2 * station + 2)))->Z() - |
1335 | (&(pMUON->Chamber(2 * station + 4)))->Z(); | |
04b5ea16 | 1336 | // Z difference between the two chambers in the previous station |
1337 | dZ3 = (&(pMUON->Chamber(2 * station)))->Z() - | |
1338 | (&(pMUON->Chamber(2 * station + 1)))->Z(); | |
1339 | extrapSegment->SetBendingCoorReso2(fBendingResolution * fBendingResolution); | |
1340 | extrapSegment-> | |
1341 | SetNonBendingCoorReso2(fNonBendingResolution * fNonBendingResolution); | |
1342 | extrapSegment->UpdateFromStationTrackParam | |
1343 | (trackParam, mcsFactor, dZ1, dZ2, dZ3, station, | |
1344 | trackParam1->GetInverseBendingMomentum()); | |
a9e2aefa | 1345 | bestChi2 = 5.0; |
1346 | bestSegment = NULL; | |
b840996b | 1347 | if (AliLog::GetGlobalDebugLevel() > 2) { |
a9e2aefa | 1348 | cout << "FollowTracks: track candidate(0..): " << trackIndex |
1349 | << " Look for segment in station(0..): " << station << endl; | |
1350 | } | |
1351 | // Loop over segments in station | |
1352 | for (iSegment = 0; iSegment < fNSegments[station]; iSegment++) { | |
1353 | // Look for best compatible Segment in station | |
1354 | // should consider all possibilities ???? | |
1355 | // multiple scattering ???? | |
1356 | // separation in 2 functions: Segment and HitForRec ???? | |
1357 | segment = (AliMUONSegment*) ((*fSegmentsPtr[station])[iSegment]); | |
d0bfce8d | 1358 | // correction of corrected segment (fBendingCoor and fNonBendingCoor) |
1359 | // according to real Z value of "segment" and slopes of "extrapSegment" | |
e516b01d | 1360 | (&(trackParam[0]))->ExtrapToZ(segment->GetZ()); |
1361 | (&(trackParam[1]))->ExtrapToZ(segment->GetZ()); | |
1362 | extrapSegment->SetBendingCoor((&(trackParam[0]))->GetBendingCoor()); | |
1363 | extrapSegment->SetNonBendingCoor((&(trackParam[0]))->GetNonBendingCoor()); | |
1364 | extrapSegment->SetBendingSlope((&(trackParam[0]))->GetBendingSlope()); | |
1365 | extrapSegment->SetNonBendingSlope((&(trackParam[0]))->GetNonBendingSlope()); | |
d0bfce8d | 1366 | chi2 = segment-> |
e516b01d | 1367 | NormalizedChi2WithSegment(extrapSegment, maxSigma2Distance); |
a9e2aefa | 1368 | if (chi2 < bestChi2) { |
1369 | // update best Chi2 and Segment if better found | |
1370 | bestSegment = segment; | |
1371 | bestChi2 = chi2; | |
1372 | } | |
1373 | } | |
1374 | if (bestSegment) { | |
1375 | // best segment found: add it to track candidate | |
e516b01d | 1376 | (&(trackParam[0]))->ExtrapToZ(bestSegment->GetZ()); |
1377 | (&(trackParam[1]))->ExtrapToZ(bestSegment->GetZ()); | |
a9e2aefa | 1378 | track->AddSegment(bestSegment); |
1379 | // set track parameters at these two TrakHit's | |
1380 | track->SetTrackParamAtHit(track->GetNTrackHits() - 2, &(trackParam[0])); | |
1381 | track->SetTrackParamAtHit(track->GetNTrackHits() - 1, &(trackParam[1])); | |
b840996b | 1382 | AliDebug(3, Form("FollowTracks: track candidate(0..): %d Added segment in station(0..): %d", trackIndex, station)); |
1383 | if (AliLog::GetGlobalDebugLevel()>2) track->RecursiveDump(); | |
a9e2aefa | 1384 | } |
1385 | else { | |
1386 | // No best segment found: | |
1387 | // Look for best compatible HitForRec in station: | |
1388 | // should consider all possibilities ???? | |
1389 | // multiple scattering ???? do about like for extrapSegment !!!! | |
79e1e601 | 1390 | extrapHit = new AliMUONHitForRec(); // empty hit |
a9e2aefa | 1391 | bestChi2 = 3.0; |
1392 | bestHit = NULL; | |
b840996b | 1393 | AliDebug(3, Form("FollowTracks: track candidate(0..): %d Segment not found, look for hit in station(0..): %d ", |
1394 | trackIndex, station)); | |
1395 | ||
a9e2aefa | 1396 | // Loop over chambers of the station |
d82671a0 | 1397 | for (chInStation = 0; chInStation < 2; chInStation++) { |
956019b6 | 1398 | ch = 2 * station + chInStation; |
a9e2aefa | 1399 | for (iHit = fIndexOfFirstHitForRecPerChamber[ch]; |
1400 | iHit < fIndexOfFirstHitForRecPerChamber[ch] + | |
1401 | fNHitsForRecPerChamber[ch]; | |
1402 | iHit++) { | |
1403 | hit = (AliMUONHitForRec*) ((*fHitsForRecPtr)[iHit]); | |
e516b01d | 1404 | // coordinates of extrapolated hit |
1405 | (&(trackParam[chInStation]))->ExtrapToZ(hit->GetZ()); | |
1406 | extrapHit-> | |
1407 | SetBendingCoor((&(trackParam[chInStation]))->GetBendingCoor()); | |
1408 | extrapHit-> | |
1409 | SetNonBendingCoor((&(trackParam[chInStation]))->GetNonBendingCoor()); | |
1410 | // resolutions from "extrapSegment" | |
1411 | extrapHit->SetBendingReso2(extrapSegment->GetBendingCoorReso2()); | |
1412 | extrapHit->SetNonBendingReso2(extrapSegment->GetNonBendingCoorReso2()); | |
1413 | // Loop over hits in the chamber | |
a9e2aefa | 1414 | // condition for hit not already in segment ???? |
1415 | chi2 = hit->NormalizedChi2WithHitForRec(extrapHit, maxSigma2Distance); | |
1416 | if (chi2 < bestChi2) { | |
1417 | // update best Chi2 and HitForRec if better found | |
1418 | bestHit = hit; | |
1419 | bestChi2 = chi2; | |
d82671a0 | 1420 | chBestHit = chInStation; |
a9e2aefa | 1421 | } |
1422 | } | |
1423 | } | |
1424 | if (bestHit) { | |
1425 | // best hit found: add it to track candidate | |
e516b01d | 1426 | (&(trackParam[chBestHit]))->ExtrapToZ(bestHit->GetZ()); |
a9e2aefa | 1427 | track->AddHitForRec(bestHit); |
956019b6 | 1428 | // set track parameters at this TrackHit |
a9e2aefa | 1429 | track->SetTrackParamAtHit(track->GetNTrackHits() - 1, |
1430 | &(trackParam[chBestHit])); | |
b840996b | 1431 | if (AliLog::GetGlobalDebugLevel() > 2) { |
a9e2aefa | 1432 | cout << "FollowTracks: track candidate(0..): " << trackIndex |
1433 | << " Added hit in station(0..): " << station << endl; | |
1434 | track->RecursiveDump(); | |
1435 | } | |
1436 | } | |
1437 | else { | |
8429a5e4 | 1438 | // Remove current track candidate |
1439 | // and corresponding TrackHit's, ... | |
1440 | track->Remove(); | |
04b5ea16 | 1441 | delete extrapSegment; |
d0bfce8d | 1442 | delete extrapHit; |
a9e2aefa | 1443 | break; // stop the search for this candidate: |
1444 | // exit from the loop over station | |
1445 | } | |
d0bfce8d | 1446 | delete extrapHit; |
a9e2aefa | 1447 | } |
04b5ea16 | 1448 | delete extrapSegment; |
a9e2aefa | 1449 | // Sort track hits according to increasing Z |
1450 | track->GetTrackHitsPtr()->Sort(); | |
1451 | // Update track parameters at first track hit (smallest Z) | |
1452 | trackParam1 = ((AliMUONTrackHit*) | |
1453 | (track->GetTrackHitsPtr()->First()))->GetTrackParam(); | |
d0bfce8d | 1454 | bendingMomentum = 0.; |
1455 | if (TMath::Abs(trackParam1->GetInverseBendingMomentum()) > 0.) | |
1456 | bendingMomentum = TMath::Abs(1/(trackParam1->GetInverseBendingMomentum())); | |
1457 | // Track removed if bendingMomentum not in window [min, max] | |
1458 | if ((bendingMomentum < fMinBendingMomentum) || (bendingMomentum > fMaxBendingMomentum)) { | |
1459 | track->Remove(); | |
1460 | break; // stop the search for this candidate: | |
1461 | // exit from the loop over station | |
1462 | } | |
956019b6 | 1463 | // Track fit |
04b5ea16 | 1464 | // with multiple Coulomb scattering if all stations |
1465 | if (station == 0) track->SetFitMCS(1); | |
956019b6 | 1466 | // without multiple Coulomb scattering if not all stations |
04b5ea16 | 1467 | else track->SetFitMCS(0); |
956019b6 | 1468 | track->SetFitNParam(5); // with 5 parameters (momentum and position) |
1469 | track->SetFitStart(1); // from parameters at first hit | |
1470 | track->Fit(); | |
d0bfce8d | 1471 | Double_t numberOfDegFree = (2.0 * track->GetNTrackHits() - 5); |
1472 | if (numberOfDegFree > 0) { | |
1473 | chi2Norm = track->GetFitFMin() / numberOfDegFree; | |
1474 | } else { | |
1475 | chi2Norm = 1.e10; | |
1476 | } | |
1477 | // Track removed if normalized chi2 too high | |
1478 | if (chi2Norm > fMaxChi2) { | |
1479 | track->Remove(); | |
1480 | break; // stop the search for this candidate: | |
1481 | // exit from the loop over station | |
1482 | } | |
b840996b | 1483 | if (AliLog::GetGlobalDebugLevel() > 2) { |
a9e2aefa | 1484 | cout << "FollowTracks: track candidate(0..): " << trackIndex |
1485 | << " after fit from station(0..): " << station << " to 4" << endl; | |
1486 | track->RecursiveDump(); | |
1487 | } | |
04b5ea16 | 1488 | // Track extrapolation to the vertex through the absorber (Branson) |
956019b6 | 1489 | // after going through the first station |
04b5ea16 | 1490 | if (station == 0) { |
1491 | trackParamVertex = *trackParam1; | |
889a0215 | 1492 | (&trackParamVertex)->ExtrapToVertex(0.,0.,0.); |
04b5ea16 | 1493 | track->SetTrackParamAtVertex(&trackParamVertex); |
b840996b | 1494 | if (AliLog::GetGlobalDebugLevel() > 0) { |
6ae236ee | 1495 | cout << "FollowTracks: track candidate(0..): " << trackIndex |
1496 | << " after extrapolation to vertex" << endl; | |
1497 | track->RecursiveDump(); | |
1498 | } | |
04b5ea16 | 1499 | } |
a9e2aefa | 1500 | } // for (station = 2;... |
04b5ea16 | 1501 | // go really to next track |
1502 | track = nextTrack; | |
1503 | } // while (track) | |
1504 | // Compression of track array (necessary after Remove ????) | |
1505 | fRecTracksPtr->Compress(); | |
1506 | return; | |
1507 | } | |
1508 | ||
1509 | //__________________________________________________________________________ | |
8429a5e4 | 1510 | void AliMUONEventReconstructor::RemoveDoubleTracks(void) |
1511 | { | |
1512 | // To remove double tracks. | |
1513 | // Tracks are considered identical | |
1514 | // if they have at least half of their hits in common. | |
1515 | // Among two identical tracks, one keeps the track with the larger number of hits | |
1516 | // or, if these numbers are equal, the track with the minimum Chi2. | |
1517 | AliMUONTrack *track1, *track2, *trackToRemove; | |
1518 | Bool_t identicalTracks; | |
1519 | Int_t hitsInCommon, nHits1, nHits2; | |
1520 | identicalTracks = kTRUE; | |
1521 | while (identicalTracks) { | |
1522 | identicalTracks = kFALSE; | |
1523 | // Loop over first track of the pair | |
1524 | track1 = (AliMUONTrack*) fRecTracksPtr->First(); | |
1525 | while (track1 && (!identicalTracks)) { | |
1526 | nHits1 = track1->GetNTrackHits(); | |
1527 | // Loop over second track of the pair | |
1528 | track2 = (AliMUONTrack*) fRecTracksPtr->After(track1); | |
1529 | while (track2 && (!identicalTracks)) { | |
1530 | nHits2 = track2->GetNTrackHits(); | |
1531 | // number of hits in common between two tracks | |
1532 | hitsInCommon = track1->HitsInCommon(track2); | |
1533 | // check for identical tracks | |
1534 | if ((4 * hitsInCommon) >= (nHits1 + nHits2)) { | |
1535 | identicalTracks = kTRUE; | |
1536 | // decide which track to remove | |
1537 | if (nHits1 > nHits2) trackToRemove = track2; | |
1538 | else if (nHits1 < nHits2) trackToRemove = track1; | |
1539 | else if ((track1->GetFitFMin()) < (track2->GetFitFMin())) | |
1540 | trackToRemove = track2; | |
1541 | else trackToRemove = track1; | |
1542 | // remove it | |
1543 | trackToRemove->Remove(); | |
1544 | } | |
1545 | track2 = (AliMUONTrack*) fRecTracksPtr->After(track2); | |
1546 | } // track2 | |
1547 | track1 = (AliMUONTrack*) fRecTracksPtr->After(track1); | |
1548 | } // track1 | |
1549 | } | |
1550 | return; | |
1551 | } | |
1552 | ||
d837040f | 1553 | //__________________________________________________________________________ |
1554 | void AliMUONEventReconstructor::UpdateTrackParamAtHit() | |
1555 | { | |
1556 | // Set track parameters after track fitting. Fill fTrackParamAtHit of AliMUONTrack's | |
1557 | AliMUONTrack *track; | |
1558 | AliMUONTrackHit *trackHit; | |
1559 | AliMUONTrackParam *trackParam; | |
1560 | track = (AliMUONTrack*) fRecTracksPtr->First(); | |
1561 | while (track) { | |
1562 | trackHit = (AliMUONTrackHit*) (track->GetTrackHitsPtr())->First(); | |
1563 | while (trackHit) { | |
1564 | trackParam = trackHit->GetTrackParam(); | |
1565 | track->AddTrackParamAtHit(trackParam); | |
1566 | trackHit = (AliMUONTrackHit*) (track->GetTrackHitsPtr())->After(trackHit); | |
1567 | } // trackHit | |
1568 | track = (AliMUONTrack*) fRecTracksPtr->After(track); | |
1569 | } // track | |
1570 | return; | |
1571 | } | |
1572 | ||
b8dc484b | 1573 | //__________________________________________________________________________ |
1574 | void AliMUONEventReconstructor::UpdateHitForRecAtHit() | |
1575 | { | |
1576 | // Set cluster parameterss after track fitting. Fill fHitForRecAtHit of AliMUONTrack's | |
1577 | AliMUONTrack *track; | |
1578 | AliMUONTrackHit *trackHit; | |
1579 | AliMUONHitForRec *hitForRec; | |
1580 | track = (AliMUONTrack*) fRecTracksPtr->First(); | |
1581 | while (track) { | |
1582 | trackHit = (AliMUONTrackHit*) (track->GetTrackHitsPtr())->First(); | |
1583 | while (trackHit) { | |
1584 | hitForRec = trackHit->GetHitForRecPtr(); | |
1585 | track->AddHitForRecAtHit(hitForRec); | |
1586 | trackHit = (AliMUONTrackHit*) (track->GetTrackHitsPtr())->After(trackHit); | |
1587 | } // trackHit | |
1588 | track = (AliMUONTrack*) fRecTracksPtr->After(track); | |
1589 | } // track | |
1590 | return; | |
1591 | } | |
1592 | ||
b035a148 | 1593 | //__________________________________________________________________________ |
1594 | void AliMUONEventReconstructor::FillMUONTrack() | |
1595 | { | |
1596 | // Set track parameters at hits for Kalman track. Fill fTrackParamAtHit of AliMUONTrack's | |
1597 | AliMUONTrackK *track; | |
1598 | track = (AliMUONTrackK*) fRecTracksPtr->First(); | |
1599 | while (track) { | |
1600 | track->FillMUONTrack(); | |
1601 | track = (AliMUONTrackK*) fRecTracksPtr->After(track); | |
1602 | } | |
1603 | return; | |
1604 | } | |
1605 | ||
8429a5e4 | 1606 | //__________________________________________________________________________ |
04b5ea16 | 1607 | void AliMUONEventReconstructor::EventDump(void) |
1608 | { | |
1609 | // Dump reconstructed event (track parameters at vertex and at first hit), | |
1610 | // and the particle parameters | |
1611 | ||
1612 | AliMUONTrack *track; | |
1613 | AliMUONTrackParam *trackParam, *trackParam1; | |
04b5ea16 | 1614 | Double_t bendingSlope, nonBendingSlope, pYZ; |
1615 | Double_t pX, pY, pZ, x, y, z, c; | |
1616 | Int_t np, trackIndex, nTrackHits; | |
1617 | ||
b840996b | 1618 | AliDebug(1,"****** enter EventDump ******"); |
1619 | AliDebug(1, Form("Number of Reconstructed tracks : %d", fNRecTracks)); | |
1620 | ||
04b5ea16 | 1621 | fRecTracksPtr->Compress(); // for simple loop without "Next" since no hole |
1622 | // Loop over reconstructed tracks | |
1623 | for (trackIndex = 0; trackIndex < fNRecTracks; trackIndex++) { | |
83dbc640 | 1624 | if (fTrackMethod != 1) continue; //AZ - skip the rest for now |
b840996b | 1625 | AliDebug(1, Form("track number: %d", trackIndex)); |
04b5ea16 | 1626 | // function for each track for modularity ???? |
1627 | track = (AliMUONTrack*) ((*fRecTracksPtr)[trackIndex]); | |
1628 | nTrackHits = track->GetNTrackHits(); | |
b840996b | 1629 | AliDebug(1, Form("Number of track hits: %d ", nTrackHits)); |
04b5ea16 | 1630 | // track parameters at Vertex |
1631 | trackParam = track->GetTrackParamAtVertex(); | |
1632 | x = trackParam->GetNonBendingCoor(); | |
1633 | y = trackParam->GetBendingCoor(); | |
1634 | z = trackParam->GetZ(); | |
1635 | bendingSlope = trackParam->GetBendingSlope(); | |
1636 | nonBendingSlope = trackParam->GetNonBendingSlope(); | |
1637 | pYZ = 1/TMath::Abs(trackParam->GetInverseBendingMomentum()); | |
1638 | pZ = pYZ/TMath::Sqrt(1+bendingSlope*bendingSlope); | |
1639 | pX = pZ * nonBendingSlope; | |
1640 | pY = pZ * bendingSlope; | |
1641 | c = TMath::Sign(1.0, trackParam->GetInverseBendingMomentum()); | |
b840996b | 1642 | AliDebug(1, Form("Track parameters at Vertex z= %f: X= %f Y= %f pX= %f pY= %f pZ= %f c= %f\n", |
1643 | z, x, y, pX, pY, pZ, c)); | |
04b5ea16 | 1644 | |
1645 | // track parameters at first hit | |
1646 | trackParam1 = ((AliMUONTrackHit*) | |
1647 | (track->GetTrackHitsPtr()->First()))->GetTrackParam(); | |
1648 | x = trackParam1->GetNonBendingCoor(); | |
1649 | y = trackParam1->GetBendingCoor(); | |
1650 | z = trackParam1->GetZ(); | |
1651 | bendingSlope = trackParam1->GetBendingSlope(); | |
1652 | nonBendingSlope = trackParam1->GetNonBendingSlope(); | |
1653 | pYZ = 1/TMath::Abs(trackParam1->GetInverseBendingMomentum()); | |
1654 | pZ = pYZ/TMath::Sqrt(1.0 + bendingSlope * bendingSlope); | |
1655 | pX = pZ * nonBendingSlope; | |
1656 | pY = pZ * bendingSlope; | |
1657 | c = TMath::Sign(1.0, trackParam1->GetInverseBendingMomentum()); | |
b840996b | 1658 | AliDebug(1, Form("track parameters at z= %f: X= %f Y= %f pX= %f pY= %f pZ= %f c= %f\n", |
1659 | z, x, y, pX, pY, pZ, c)); | |
04b5ea16 | 1660 | } |
1661 | // informations about generated particles | |
5d12ce38 | 1662 | np = gAlice->GetMCApp()->GetNtrack(); |
04b5ea16 | 1663 | printf(" **** number of generated particles: %d \n", np); |
1664 | ||
88cb7938 | 1665 | // for (Int_t iPart = 0; iPart < np; iPart++) { |
1666 | // p = gAlice->Particle(iPart); | |
1667 | // printf(" particle %d: type= %d px= %f py= %f pz= %f pdg= %d\n", | |
1668 | // iPart, p->GetPdgCode(), p->Px(), p->Py(), p->Pz(), p->GetPdgCode()); | |
1669 | // } | |
a9e2aefa | 1670 | return; |
1671 | } | |
1672 | ||
276c44b7 | 1673 | |
1674 | //__________________________________________________________________________ | |
1675 | void AliMUONEventReconstructor::EventDumpTrigger(void) | |
1676 | { | |
1677 | // Dump reconstructed trigger event | |
1678 | // and the particle parameters | |
1679 | ||
52c9bc11 | 1680 | AliMUONTriggerTrack *triggertrack ; |
1681 | Int_t nTriggerTracks = fMUONData->RecTriggerTracks()->GetEntriesFast(); | |
276c44b7 | 1682 | |
b840996b | 1683 | AliDebug(1, "****** enter EventDumpTrigger ******"); |
1684 | AliDebug(1, Form("Number of Reconstructed tracks : %d ", nTriggerTracks)); | |
1685 | ||
276c44b7 | 1686 | // Loop over reconstructed tracks |
52c9bc11 | 1687 | for (Int_t trackIndex = 0; trackIndex < nTriggerTracks; trackIndex++) { |
1688 | triggertrack = (AliMUONTriggerTrack*)fMUONData->RecTriggerTracks()->At(trackIndex); | |
276c44b7 | 1689 | printf(" trigger track number %i x11=%f y11=%f thetax=%f thetay=%f \n", |
1690 | trackIndex, | |
1691 | triggertrack->GetX11(),triggertrack->GetY11(), | |
1692 | triggertrack->GetThetax(),triggertrack->GetThetay()); | |
1693 | } | |
1694 | } | |
1695 | ||
1696 | //__________________________________________________________________________ | |
c7ba256d | 1697 | void AliMUONEventReconstructor::FillEvent() |
1698 | { | |
1699 | // Create a new AliMUONRecoEvent, fill its track list, then add it as a | |
1700 | // leaf in the Event branch of TreeRecoEvent tree | |
1701 | cout << "Enter FillEvent() ...\n"; | |
1702 | ||
1703 | if (!fRecoEvent) { | |
1704 | fRecoEvent = new AliMUONRecoEvent(); | |
1705 | } else { | |
1706 | fRecoEvent->Clear(); | |
1707 | } | |
1708 | //save current directory | |
1709 | TDirectory *current = gDirectory; | |
1710 | if (!fTreeFile) fTreeFile = new TFile("tree_reco.root", "RECREATE"); | |
1711 | if (!fEventTree) fEventTree = new TTree("TreeRecoEvent", "MUON reconstructed events"); | |
83dbc640 | 1712 | //AZif (fRecoEvent->MakeDumpTracks(fRecTracksPtr)) { |
1713 | if (fRecoEvent->MakeDumpTracks(fMuons, fRecTracksPtr, this)) { //AZ | |
b840996b | 1714 | if (AliLog::GetGlobalDebugLevel() > 1) fRecoEvent->EventInfo(); |
c7ba256d | 1715 | TBranch *branch = fEventTree->GetBranch("Event"); |
d0f40f23 | 1716 | if (!branch) branch = fEventTree->Branch("Event", "AliMUONRecoEvent", &fRecoEvent, 64000); |
c7ba256d | 1717 | branch->SetAutoDelete(); |
1718 | fTreeFile->cd(); | |
1719 | fEventTree->Fill(); | |
1720 | fTreeFile->Write(); | |
1721 | } | |
1722 | // restore directory | |
1723 | current->cd(); | |
1724 | } | |
83dbc640 | 1725 | |
1726 | //__________________________________________________________________________ | |
1727 | void AliMUONEventReconstructor::MakeTrackCandidatesK(void) | |
1728 | { | |
1729 | // To make initial tracks for Kalman filter from the list of segments | |
1730 | Int_t istat, iseg; | |
1731 | AliMUONSegment *segment; | |
1732 | AliMUONTrackK *trackK; | |
1733 | ||
b840996b | 1734 | AliDebug(1,"Enter MakeTrackCandidatesK"); |
83dbc640 | 1735 | // Reset the TClonesArray of reconstructed tracks |
1736 | if (fRecTracksPtr) fRecTracksPtr->Delete(); | |
1737 | // Delete in order that the Track destructors are called, | |
1738 | // hence the space for the TClonesArray of pointers to TrackHit's is freed | |
1739 | fNRecTracks = 0; | |
1740 | ||
1741 | AliMUONTrackK a(this, fHitsForRecPtr); // bad idea ??? | |
1742 | // Loop over stations(1...) 5 and 4 | |
1743 | for (istat=4; istat>=3; istat--) { | |
1744 | // Loop over segments in the station | |
1745 | for (iseg=0; iseg<fNSegments[istat]; iseg++) { | |
1746 | // Transform segments to tracks and evaluate covariance matrix | |
1747 | segment = (AliMUONSegment*) ((*fSegmentsPtr[istat])[iseg]); | |
1748 | trackK = new ((*fRecTracksPtr)[fNRecTracks]) AliMUONTrackK(segment); | |
1749 | fNRecTracks++; | |
1750 | } // for (iseg=0;...) | |
1751 | } // for (istat=4;...) | |
1752 | return; | |
1753 | } | |
1754 | ||
1755 | //__________________________________________________________________________ | |
1756 | void AliMUONEventReconstructor::FollowTracksK(void) | |
1757 | { | |
1758 | // Follow tracks using Kalman filter | |
30178c30 | 1759 | Bool_t ok; |
b035a148 | 1760 | Int_t icand, ichamBeg = 0, ichamEnd, chamBits; |
83dbc640 | 1761 | Double_t zDipole1, zDipole2; |
1762 | AliMUONTrackK *trackK; | |
1763 | AliMUONHitForRec *hit; | |
1764 | AliMUONRawCluster *clus; | |
1765 | TClonesArray *rawclusters; | |
83dbc640 | 1766 | clus = 0; rawclusters = 0; |
1767 | ||
b035a148 | 1768 | //AZ(z->-z) zDipole1 = GetSimpleBPosition() - GetSimpleBLength()/2; |
1769 | //AZ(z->-z) zDipole2 = zDipole1 + GetSimpleBLength(); | |
1770 | zDipole1 = GetSimpleBPosition() + GetSimpleBLength()/2; | |
1771 | zDipole2 = zDipole1 - GetSimpleBLength(); | |
83dbc640 | 1772 | |
1773 | // Print hits | |
b035a148 | 1774 | trackK = (AliMUONTrackK*) ((*fRecTracksPtr)[0]); |
1775 | if (trackK->DebugLevel() > 0) { | |
1776 | for (Int_t i1=0; i1<fNHitsForRec; i1++) { | |
1777 | hit = (AliMUONHitForRec*) ((*fHitsForRecPtr)[i1]); | |
29fc2c86 | 1778 | //if (hit->GetTTRTrack() > 1 || hit->GetTrackRefSignal() == 0) continue; |
b035a148 | 1779 | printf(" Hit # %d %10.4f %10.4f %10.4f", |
1780 | hit->GetChamberNumber(), hit->GetBendingCoor(), | |
1781 | hit->GetNonBendingCoor(), hit->GetZ()); | |
29fc2c86 | 1782 | if (fRecTrackRefHits) { |
1783 | // from track ref hits | |
1784 | printf(" %3d %3d \n", hit->GetTrackRefSignal(), hit->GetTTRTrack()); | |
b035a148 | 1785 | } else { |
1786 | // from raw clusters | |
1787 | rawclusters = fMUONData->RawClusters(hit->GetChamberNumber()); | |
1788 | clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(hit-> | |
1789 | GetHitNumber()); | |
1790 | printf("%3d", clus->GetTrack(1)-1); | |
1791 | if (clus->GetTrack(2) != 0) printf("%3d \n", clus->GetTrack(2)-1); | |
1792 | else printf("\n"); | |
29fc2c86 | 1793 | } // if (fRecTrackRefHits) |
83dbc640 | 1794 | } |
b035a148 | 1795 | } // if (trackK->DebugLevel() > 0) |
83dbc640 | 1796 | |
1797 | icand = -1; | |
b035a148 | 1798 | Int_t nSeeds; |
1799 | nSeeds = fNRecTracks; // starting number of seeds | |
83dbc640 | 1800 | // Loop over track candidates |
1801 | while (icand < fNRecTracks-1) { | |
1802 | icand ++; | |
b035a148 | 1803 | if (trackK->DebugLevel()>0) cout << " *** Kalman track candidate No. " << icand << endl; |
83dbc640 | 1804 | trackK = (AliMUONTrackK*) ((*fRecTracksPtr)[icand]); |
b035a148 | 1805 | if (trackK->GetRecover() < 0) continue; // failed track |
83dbc640 | 1806 | |
1807 | // Discard candidate which will produce the double track | |
b035a148 | 1808 | /* |
83dbc640 | 1809 | if (icand > 0) { |
30178c30 | 1810 | ok = CheckCandidateK(icand,nSeeds); |
1811 | if (!ok) { | |
b035a148 | 1812 | trackK->SetRecover(-1); // mark candidate to be removed |
1813 | continue; | |
83dbc640 | 1814 | } |
1815 | } | |
b035a148 | 1816 | */ |
83dbc640 | 1817 | |
30178c30 | 1818 | ok = kTRUE; |
83dbc640 | 1819 | if (trackK->GetRecover() == 0) hit = (AliMUONHitForRec*) |
1820 | trackK->GetHitOnTrack()->Last(); // last hit | |
b035a148 | 1821 | //else hit = (AliMUONHitForRec*) (*trackK->GetHitOnTrack())[1]; // 2'nd hit |
1822 | else hit = trackK->GetHitLastOk(); // hit where track stopped | |
1823 | if (hit) ichamBeg = hit->GetChamberNumber(); | |
83dbc640 | 1824 | ichamEnd = 0; |
1825 | // Check propagation direction | |
b035a148 | 1826 | if (hit == NULL) ichamBeg = ichamEnd; |
1827 | //AZ(z->-z) else if (trackK->GetTrackDir() > 0) { | |
1828 | else if (trackK->GetTrackDir() < 0) { | |
83dbc640 | 1829 | ichamEnd = 9; // forward propagation |
30178c30 | 1830 | ok = trackK->KalmanFilter(ichamBeg,ichamEnd,kFALSE,zDipole1,zDipole2); |
1831 | if (ok) { | |
83dbc640 | 1832 | ichamBeg = ichamEnd; |
1833 | ichamEnd = 6; // backward propagation | |
1834 | // Change weight matrix and zero fChi2 for backpropagation | |
1835 | trackK->StartBack(); | |
b035a148 | 1836 | //AZ trackK->SetTrackDir(-1); |
1837 | trackK->SetTrackDir(1); | |
30178c30 | 1838 | ok = trackK->KalmanFilter(ichamBeg,ichamEnd,kTRUE,zDipole1,zDipole2); |
83dbc640 | 1839 | ichamBeg = ichamEnd; |
1840 | ichamEnd = 0; | |
1841 | } | |
1842 | } else { | |
1843 | if (trackK->GetBPFlag()) { | |
1844 | // backpropagation | |
1845 | ichamEnd = 6; // backward propagation | |
1846 | // Change weight matrix and zero fChi2 for backpropagation | |
1847 | trackK->StartBack(); | |
30178c30 | 1848 | ok = trackK->KalmanFilter(ichamBeg,ichamEnd,kTRUE,zDipole1,zDipole2); |
83dbc640 | 1849 | ichamBeg = ichamEnd; |
1850 | ichamEnd = 0; | |
1851 | } | |
1852 | } | |
1853 | ||
30178c30 | 1854 | if (ok) { |
b035a148 | 1855 | //AZ trackK->SetTrackDir(-1); |
1856 | trackK->SetTrackDir(1); | |
83dbc640 | 1857 | trackK->SetBPFlag(kFALSE); |
30178c30 | 1858 | ok = trackK->KalmanFilter(ichamBeg,ichamEnd,kFALSE,zDipole1,zDipole2); |
83dbc640 | 1859 | } |
b035a148 | 1860 | if (!ok) { trackK->SetRecover(-1); continue; } // mark candidate to be removed |
1861 | ||
1862 | // Apply smoother | |
1863 | if (trackK->GetRecover() >= 0) { | |
1864 | ok = trackK->Smooth(); | |
1865 | if (!ok) trackK->SetRecover(-1); // mark candidate to be removed | |
1866 | } | |
83dbc640 | 1867 | |
1868 | // Majority 3 of 4 in first 2 stations | |
b035a148 | 1869 | if (!ok) continue; |
83dbc640 | 1870 | chamBits = 0; |
b035a148 | 1871 | Double_t chi2_max = 0; |
83dbc640 | 1872 | for (Int_t i=0; i<trackK->GetNTrackHits(); i++) { |
1873 | hit = (AliMUONHitForRec*) (*trackK->GetHitOnTrack())[i]; | |
b035a148 | 1874 | chamBits |= BIT(hit->GetChamberNumber()); |
1875 | if (trackK->GetChi2PerPoint(i) > chi2_max) chi2_max = trackK->GetChi2PerPoint(i); | |
83dbc640 | 1876 | } |
b035a148 | 1877 | if (!((chamBits&3)==3 || (chamBits>>2&3)==3) && chi2_max > 25) { |
1878 | //trackK->Recover(); | |
1879 | trackK->SetRecover(-1); //mark candidate to be removed | |
1880 | continue; | |
1881 | } | |
1882 | if (ok) trackK->SetTrackQuality(0); // compute "track quality" | |
83dbc640 | 1883 | } // while |
1884 | ||
1885 | for (Int_t i=0; i<fNRecTracks; i++) { | |
1886 | trackK = (AliMUONTrackK*) ((*fRecTracksPtr)[i]); | |
1887 | if (trackK->GetRecover() < 0) fRecTracksPtr->RemoveAt(i); | |
1888 | } | |
1889 | ||
1890 | // Compress TClonesArray | |
1891 | fRecTracksPtr->Compress(); | |
1892 | fNRecTracks = fRecTracksPtr->GetEntriesFast(); | |
1893 | return; | |
1894 | } | |
1895 | ||
1896 | //__________________________________________________________________________ | |
30178c30 | 1897 | Bool_t AliMUONEventReconstructor::CheckCandidateK(Int_t icand, Int_t nSeeds) const |
83dbc640 | 1898 | { |
1899 | // Discards track candidate if it will produce the double track (having | |
1900 | // the same seed segment hits as hits of a good track found before) | |
1901 | AliMUONTrackK *track1, *track2; | |
1902 | AliMUONHitForRec *hit1, *hit2, *hit; | |
1903 | ||
1904 | track1 = (AliMUONTrackK*) ((*fRecTracksPtr)[icand]); | |
1905 | hit1 = (AliMUONHitForRec*) (*track1->GetHitOnTrack())[0]; // 1'st hit | |
1906 | hit2 = (AliMUONHitForRec*) (*track1->GetHitOnTrack())[1]; // 2'nd hit | |
1907 | ||
1908 | for (Int_t i=0; i<icand; i++) { | |
1909 | track2 = (AliMUONTrackK*) ((*fRecTracksPtr)[i]); | |
1910 | //if (track2->GetRecover() < 0) continue; | |
1911 | if (track2->GetRecover() < 0 && icand >= nSeeds) continue; | |
1912 | ||
1913 | if (track1->GetStartSegment() == track2->GetStartSegment()) { | |
1914 | return kFALSE; | |
1915 | } else { | |
1916 | Int_t nSame = 0; | |
1917 | for (Int_t j=0; j<track2->GetNTrackHits(); j++) { | |
1918 | hit = (AliMUONHitForRec*) (*track2->GetHitOnTrack())[j]; | |
1919 | if (hit == hit1 || hit == hit2) { | |
1920 | nSame++; | |
1921 | if (nSame == 2) return kFALSE; | |
1922 | } | |
1923 | } // for (Int_t j=0; | |
1924 | } | |
1925 | } // for (Int_t i=0; | |
1926 | return kTRUE; | |
1927 | } | |
1928 | ||
1929 | //__________________________________________________________________________ | |
1930 | void AliMUONEventReconstructor::RemoveDoubleTracksK(void) | |
1931 | { | |
1932 | // Removes double tracks (sharing more than half of their hits). Keeps | |
1933 | // the track with higher quality | |
1934 | AliMUONTrackK *track1, *track2, *trackToKill; | |
1935 | ||
1936 | // Sort tracks according to their quality | |
1937 | fRecTracksPtr->Sort(); | |
1938 | ||
1939 | // Loop over first track of the pair | |
1940 | track1 = (AliMUONTrackK*) fRecTracksPtr->First(); | |
b035a148 | 1941 | Int_t debug = track1->DebugLevel(); |
83dbc640 | 1942 | while (track1) { |
1943 | // Loop over second track of the pair | |
1944 | track2 = (AliMUONTrackK*) fRecTracksPtr->After(track1); | |
1945 | while (track2) { | |
1946 | // Check whether or not to keep track2 | |
1947 | if (!track2->KeepTrack(track1)) { | |
b035a148 | 1948 | if (debug >= 0) cout << " Killed track: " << 1/(*track2->GetTrackParameters())(4,0) << |
83dbc640 | 1949 | " " << track2->GetTrackQuality() << endl; |
1950 | trackToKill = track2; | |
1951 | track2 = (AliMUONTrackK*) fRecTracksPtr->After(track2); | |
1952 | trackToKill->Kill(); | |
1953 | fRecTracksPtr->Compress(); | |
1954 | } else track2 = (AliMUONTrackK*) fRecTracksPtr->After(track2); | |
1955 | } // track2 | |
1956 | track1 = (AliMUONTrackK*) fRecTracksPtr->After(track1); | |
1957 | } // track1 | |
1958 | ||
1959 | fNRecTracks = fRecTracksPtr->GetEntriesFast(); | |
b035a148 | 1960 | if (debug >= 0) cout << " Number of Kalman tracks: " << fNRecTracks << endl; |
83dbc640 | 1961 | } |
1962 | ||
1963 | //__________________________________________________________________________ | |
1964 | void AliMUONEventReconstructor::GoToVertex(void) | |
1965 | { | |
1966 | // Propagates track to the vertex thru absorber | |
1967 | // (using Branson correction for now) | |
1968 | ||
1969 | Double_t zVertex; | |
1970 | zVertex = 0; | |
1971 | for (Int_t i=0; i<fNRecTracks; i++) { | |
1972 | //((AliMUONTrackK*)(*fRecTracksPtr)[i])->Branson(); | |
83dbc640 | 1973 | ((AliMUONTrackK*)(*fRecTracksPtr)[i])->SetTrackQuality(1); // compute Chi2 |
b035a148 | 1974 | //((AliMUONTrackK*)(*fRecTracksPtr)[i])->GoToZ(zVertex); // w/out absorber |
1975 | ((AliMUONTrackK*)(*fRecTracksPtr)[i])->GoToVertex(1); // with absorber | |
83dbc640 | 1976 | } |
1977 | } | |
b035a148 | 1978 | |
1979 | //__________________________________________________________________________ | |
1980 | void AliMUONEventReconstructor::SetTrackMethod(Int_t iTrackMethod) | |
1981 | { | |
1982 | // Set track method and recreate track container if necessary | |
1983 | ||
1984 | fTrackMethod = iTrackMethod == 2 ? 2 : 1; | |
1985 | if (fTrackMethod == 2) { | |
1986 | if (fRecTracksPtr) delete fRecTracksPtr; | |
1987 | fRecTracksPtr = new TClonesArray("AliMUONTrackK", 10); | |
1988 | cout << " *** Tracking with the Kalman filter *** " << endl; | |
1989 | } else cout << " *** Traditional tracking *** " << endl; | |
1990 | ||
1991 | } |