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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 | |
30178c30 | 35 | #include <Riostream.h> |
36 | #include <TDirectory.h> | |
37 | #include <TFile.h> | |
38 | #include <TMatrixD.h> //AZ | |
a9e2aefa | 39 | |
3831f268 | 40 | #include "AliMUONEventReconstructor.h" |
30178c30 | 41 | #include "AliMUON.h" |
42 | #include "AliMUONHit.h" | |
a9e2aefa | 43 | #include "AliMUONHitForRec.h" |
276c44b7 | 44 | #include "AliMUONTriggerTrack.h" |
276c44b7 | 45 | #include "AliMUONTriggerCircuit.h" |
a9e2aefa | 46 | #include "AliMUONRawCluster.h" |
276c44b7 | 47 | #include "AliMUONLocalTrigger.h" |
52c9bc11 | 48 | #include "AliMUONGlobalTrigger.h" |
3831f268 | 49 | #include "AliMUONRecoEvent.h" |
50 | #include "AliMUONSegment.h" | |
a9e2aefa | 51 | #include "AliMUONTrack.h" |
a9e2aefa | 52 | #include "AliMUONTrackHit.h" |
94de3818 | 53 | #include "AliMagF.h" |
3831f268 | 54 | #include "AliRun.h" // for gAlice |
88cb7938 | 55 | #include "AliRunLoader.h" |
56 | #include "AliLoader.h" | |
83dbc640 | 57 | #include "AliMUONTrackK.h" //AZ |
5d12ce38 | 58 | #include "AliMC.h" |
a9e2aefa | 59 | |
a9e2aefa | 60 | //************* Defaults parameters for reconstruction |
343146bf | 61 | const Double_t AliMUONEventReconstructor::fgkDefaultMinBendingMomentum = 3.0; |
62 | const Double_t AliMUONEventReconstructor::fgkDefaultMaxBendingMomentum = 500.0; | |
63 | const Double_t AliMUONEventReconstructor::fgkDefaultMaxChi2 = 100.0; | |
64 | const Double_t AliMUONEventReconstructor::fgkDefaultMaxSigma2Distance = 16.0; | |
65 | const Double_t AliMUONEventReconstructor::fgkDefaultBendingResolution = 0.01; | |
66 | const Double_t AliMUONEventReconstructor::fgkDefaultNonBendingResolution = 0.144; | |
67 | const Double_t AliMUONEventReconstructor::fgkDefaultChamberThicknessInX0 = 0.03; | |
a9e2aefa | 68 | // Simple magnetic field: |
69 | // Value taken from macro MUONtracking.C: 0.7 T, hence 7 kG | |
70 | // Length and Position from reco_muon.F, with opposite sign: | |
71 | // Length = ZMAGEND-ZCOIL | |
72 | // Position = (ZMAGEND+ZCOIL)/2 | |
73 | // to be ajusted differently from real magnetic field ???? | |
343146bf | 74 | const Double_t AliMUONEventReconstructor::fgkDefaultSimpleBValue = 7.0; |
75 | const Double_t AliMUONEventReconstructor::fgkDefaultSimpleBLength = 428.0; | |
76 | const Double_t AliMUONEventReconstructor::fgkDefaultSimpleBPosition = 1019.0; | |
77 | const Int_t AliMUONEventReconstructor::fgkDefaultRecGeantHits = 0; | |
78 | const Double_t AliMUONEventReconstructor::fgkDefaultEfficiency = 0.95; | |
a9e2aefa | 79 | |
343146bf | 80 | const Int_t AliMUONEventReconstructor::fgkDefaultPrintLevel = -1; |
a9e2aefa | 81 | |
82 | ClassImp(AliMUONEventReconstructor) // Class implementation in ROOT context | |
83 | ||
84 | //__________________________________________________________________________ | |
52c9bc11 | 85 | AliMUONEventReconstructor::AliMUONEventReconstructor(AliLoader* loader) |
30178c30 | 86 | : TObject() |
a9e2aefa | 87 | { |
88 | // Constructor for class AliMUONEventReconstructor | |
89 | SetReconstructionParametersToDefaults(); | |
83dbc640 | 90 | fTrackMethod = 1; //AZ - tracking method (1-default, 2-Kalman) |
a9e2aefa | 91 | // Memory allocation for the TClonesArray of hits for reconstruction |
92 | // Is 10000 the right size ???? | |
93 | fHitsForRecPtr = new TClonesArray("AliMUONHitForRec", 10000); | |
94 | fNHitsForRec = 0; // really needed or GetEntriesFast sufficient ???? | |
95 | // Memory allocation for the TClonesArray's of segments in stations | |
96 | // Is 2000 the right size ???? | |
30178c30 | 97 | for (Int_t st = 0; st < fgkMaxMuonTrackingStations; st++) { |
a9e2aefa | 98 | fSegmentsPtr[st] = new TClonesArray("AliMUONSegment", 2000); |
99 | fNSegments[st] = 0; // really needed or GetEntriesFast sufficient ???? | |
100 | } | |
101 | // Memory allocation for the TClonesArray of reconstructed tracks | |
102 | // Is 10 the right size ???? | |
103 | fRecTracksPtr = new TClonesArray("AliMUONTrack", 10); | |
104 | fNRecTracks = 0; // really needed or GetEntriesFast sufficient ???? | |
276c44b7 | 105 | // trigger tracks |
106 | fRecTriggerTracksPtr = new TClonesArray("AliMUONTriggerTrack", 10); | |
107 | fNRecTriggerTracks = 0; // really needed or GetEntriesFast sufficient ???? | |
8429a5e4 | 108 | // Memory allocation for the TClonesArray of hits on reconstructed tracks |
109 | // Is 100 the right size ???? | |
110 | fRecTrackHitsPtr = new TClonesArray("AliMUONTrack", 100); | |
111 | fNRecTrackHits = 0; // really needed or GetEntriesFast sufficient ???? | |
a9e2aefa | 112 | |
5b64e914 | 113 | // Sign of fSimpleBValue according to sign of Bx value at (50,50,-950). |
a6f03ddb | 114 | Float_t b[3], x[3]; |
5b64e914 | 115 | x[0] = 50.; x[1] = 50.; x[2] = -950.; |
a6f03ddb | 116 | gAlice->Field()->Field(x, b); |
065bd0e1 | 117 | fSimpleBValue = TMath::Sign(fSimpleBValue,(Double_t) b[0]); |
5b64e914 | 118 | fSimpleBPosition = TMath::Sign(fSimpleBPosition,(Double_t) x[2]); |
a6f03ddb | 119 | // See how to get fSimple(BValue, BLength, BPosition) |
120 | // automatically calculated from the actual magnetic field ???? | |
a9e2aefa | 121 | |
122 | if (fPrintLevel >= 0) { | |
a6f03ddb | 123 | cout << "AliMUONEventReconstructor constructed with defaults" << endl; Dump(); |
124 | cout << endl << "Magnetic field from root file:" << endl; | |
125 | gAlice->Field()->Dump(); | |
126 | cout << endl; | |
127 | } | |
c7ba256d | 128 | |
47a6b602 | 129 | // Initializions for GEANT background events |
130 | fBkgGeantFile = 0; | |
131 | fBkgGeantTK = 0; | |
132 | fBkgGeantParticles = 0; | |
133 | fBkgGeantTH = 0; | |
134 | fBkgGeantHits = 0; | |
135 | fBkgGeantEventNumber = -1; | |
136 | ||
c7ba256d | 137 | // Initialize to 0 pointers to RecoEvent, tree and tree file |
138 | fRecoEvent = 0; | |
139 | fEventTree = 0; | |
140 | fTreeFile = 0; | |
52c9bc11 | 141 | |
142 | // initialize loader's | |
143 | fLoader = loader; | |
144 | ||
145 | // initialize container | |
146 | fMUONData = new AliMUONData(fLoader,"MUON","MUON"); | |
147 | ||
148 | // Loading AliRun master | |
149 | AliRunLoader* runloader = fLoader->GetRunLoader(); | |
150 | if (runloader->GetAliRun() == 0x0) runloader->LoadgAlice(); | |
151 | gAlice = runloader->GetAliRun(); | |
152 | ||
a9e2aefa | 153 | return; |
154 | } | |
52c9bc11 | 155 | //__________________________________________________________________________ |
30178c30 | 156 | AliMUONEventReconstructor::AliMUONEventReconstructor (const AliMUONEventReconstructor& rhs) |
157 | : TObject(rhs) | |
9cbdf048 | 158 | { |
30178c30 | 159 | // Protected copy constructor |
160 | ||
161 | Fatal("AliMUONEventReconstructor", "Not implemented."); | |
9cbdf048 | 162 | } |
163 | ||
30178c30 | 164 | AliMUONEventReconstructor & |
165 | AliMUONEventReconstructor::operator=(const AliMUONEventReconstructor& rhs) | |
9cbdf048 | 166 | { |
30178c30 | 167 | // Protected assignement operator |
168 | ||
169 | if (this == &rhs) return *this; | |
170 | ||
171 | Fatal("operator=", "Not implemented."); | |
172 | ||
173 | return *this; | |
9cbdf048 | 174 | } |
175 | ||
a9e2aefa | 176 | //__________________________________________________________________________ |
177 | AliMUONEventReconstructor::~AliMUONEventReconstructor(void) | |
178 | { | |
179 | // Destructor for class AliMUONEventReconstructor | |
c7ba256d | 180 | if (fTreeFile) { |
181 | fTreeFile->Close(); | |
182 | delete fTreeFile; | |
183 | } | |
184 | // if (fEventTree) delete fEventTree; | |
185 | if (fRecoEvent) delete fRecoEvent; | |
a9e2aefa | 186 | delete fHitsForRecPtr; // Correct destruction of everything ???? or delete [] ???? |
30178c30 | 187 | for (Int_t st = 0; st < fgkMaxMuonTrackingStations; st++) |
a9e2aefa | 188 | delete fSegmentsPtr[st]; // Correct destruction of everything ???? |
189 | return; | |
190 | } | |
191 | ||
192 | //__________________________________________________________________________ | |
193 | void AliMUONEventReconstructor::SetReconstructionParametersToDefaults(void) | |
194 | { | |
195 | // Set reconstruction parameters to default values | |
196 | // Would be much more convenient with a structure (or class) ???? | |
343146bf | 197 | fMinBendingMomentum = fgkDefaultMinBendingMomentum; |
198 | fMaxBendingMomentum = fgkDefaultMaxBendingMomentum; | |
199 | fMaxChi2 = fgkDefaultMaxChi2; | |
200 | fMaxSigma2Distance = fgkDefaultMaxSigma2Distance; | |
a9e2aefa | 201 | |
9cbdf048 | 202 | AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON"); |
a9e2aefa | 203 | // ******** Parameters for making HitsForRec |
204 | // minimum radius, | |
205 | // like in TRACKF_STAT: | |
206 | // 2 degrees for stations 1 and 2, or ch(0...) from 0 to 3; | |
207 | // 30 cm for stations 3 to 5, or ch(0...) from 4 to 9 | |
343146bf | 208 | for (Int_t ch = 0; ch < fgkMaxMuonTrackingChambers; ch++) { |
9cbdf048 | 209 | if (ch < 4) fRMin[ch] = TMath::Abs((&(pMUON->Chamber(ch)))->Z()) * |
a9e2aefa | 210 | 2.0 * TMath::Pi() / 180.0; |
211 | else fRMin[ch] = 30.0; | |
d0bfce8d | 212 | // maximum radius at 10 degrees and Z of chamber |
213 | fRMax[ch] = TMath::Abs((&(pMUON->Chamber(ch)))->Z()) * | |
214 | 10.0 * TMath::Pi() / 180.0; | |
a9e2aefa | 215 | } |
a9e2aefa | 216 | |
217 | // ******** Parameters for making segments | |
218 | // should be parametrized ???? | |
219 | // according to interval between chambers in a station ???? | |
220 | // Maximum distance in non bending plane | |
221 | // 5 * 0.22 just to remember the way it was made in TRACKF_STAT | |
222 | // SIGCUT*DYMAX(IZ) | |
30178c30 | 223 | for (Int_t st = 0; st < fgkMaxMuonTrackingStations; st++) |
a9e2aefa | 224 | fSegmentMaxDistNonBending[st] = 5. * 0.22; |
860cef81 | 225 | // Maximum distance in bending plane: |
226 | // values from TRACKF_STAT, corresponding to (J psi 20cm), | |
227 | // scaled to the real distance between chambers in a station | |
ef21c79e | 228 | fSegmentMaxDistBending[0] = TMath::Abs( 1.5 * |
229 | ((&(pMUON->Chamber(1)))->Z() - (&(pMUON->Chamber(0)))->Z()) / 20.0); | |
230 | fSegmentMaxDistBending[1] = TMath::Abs( 1.5 * | |
231 | ((&(pMUON->Chamber(3)))->Z() - (&(pMUON->Chamber(2)))->Z()) / 20.0); | |
232 | fSegmentMaxDistBending[2] = TMath::Abs( 3.0 * | |
233 | ((&(pMUON->Chamber(5)))->Z() - (&(pMUON->Chamber(4)))->Z()) / 20.0); | |
234 | fSegmentMaxDistBending[3] = TMath::Abs( 6.0 * | |
235 | ((&(pMUON->Chamber(7)))->Z() - (&(pMUON->Chamber(6)))->Z()) / 20.0); | |
236 | fSegmentMaxDistBending[4] = TMath::Abs( 6.0 * | |
237 | ((&(pMUON->Chamber(9)))->Z() - (&(pMUON->Chamber(8)))->Z()) / 20.0); | |
a9e2aefa | 238 | |
343146bf | 239 | fBendingResolution = fgkDefaultBendingResolution; |
240 | fNonBendingResolution = fgkDefaultNonBendingResolution; | |
241 | fChamberThicknessInX0 = fgkDefaultChamberThicknessInX0; | |
242 | fSimpleBValue = fgkDefaultSimpleBValue; | |
243 | fSimpleBLength = fgkDefaultSimpleBLength; | |
244 | fSimpleBPosition = fgkDefaultSimpleBPosition; | |
245 | fRecGeantHits = fgkDefaultRecGeantHits; | |
246 | fEfficiency = fgkDefaultEfficiency; | |
247 | fPrintLevel = fgkDefaultPrintLevel; | |
a9e2aefa | 248 | return; |
249 | } | |
250 | ||
251 | //__________________________________________________________________________ | |
3831f268 | 252 | Double_t AliMUONEventReconstructor::GetImpactParamFromBendingMomentum(Double_t BendingMomentum) const |
a9e2aefa | 253 | { |
254 | // Returns impact parameter at vertex in bending plane (cm), | |
255 | // from the signed bending momentum "BendingMomentum" in bending plane (GeV/c), | |
256 | // using simple values for dipole magnetic field. | |
065bd0e1 | 257 | // The sign of "BendingMomentum" is the sign of the charge. |
a9e2aefa | 258 | return (-0.0003 * fSimpleBValue * fSimpleBLength * fSimpleBPosition / |
259 | BendingMomentum); | |
260 | } | |
261 | ||
262 | //__________________________________________________________________________ | |
3831f268 | 263 | Double_t AliMUONEventReconstructor::GetBendingMomentumFromImpactParam(Double_t ImpactParam) const |
a9e2aefa | 264 | { |
265 | // Returns signed bending momentum in bending plane (GeV/c), | |
065bd0e1 | 266 | // the sign being the sign of the charge for particles moving forward in Z, |
a9e2aefa | 267 | // from the impact parameter "ImpactParam" at vertex in bending plane (cm), |
268 | // using simple values for dipole magnetic field. | |
a9e2aefa | 269 | return (-0.0003 * fSimpleBValue * fSimpleBLength * fSimpleBPosition / |
270 | ImpactParam); | |
271 | } | |
272 | ||
273 | //__________________________________________________________________________ | |
274 | void AliMUONEventReconstructor::SetBkgGeantFile(Text_t *BkgGeantFileName) | |
275 | { | |
276 | // Set background file ... for GEANT hits | |
277 | // Must be called after having loaded the firts signal event | |
278 | if (fPrintLevel >= 0) { | |
279 | cout << "Enter SetBkgGeantFile with BkgGeantFileName ``" | |
280 | << BkgGeantFileName << "''" << endl;} | |
281 | if (strlen(BkgGeantFileName)) { | |
282 | // BkgGeantFileName not empty: try to open the file | |
283 | if (fPrintLevel >= 2) {cout << "Before File(Bkg)" << endl; gDirectory->Dump();} | |
284 | fBkgGeantFile = new TFile(BkgGeantFileName); | |
285 | if (fPrintLevel >= 2) {cout << "After File(Bkg)" << endl; gDirectory->Dump();} | |
286 | if (fBkgGeantFile-> IsOpen()) { | |
287 | if (fPrintLevel >= 0) { | |
288 | cout << "Background for GEANT hits in file: ``" << BkgGeantFileName | |
289 | << "'' successfully opened" << endl;} | |
290 | } | |
291 | else { | |
292 | cout << "Background for GEANT hits in file: " << BkgGeantFileName << endl; | |
293 | cout << "NOT FOUND: EXIT" << endl; | |
294 | exit(0); // right instruction for exit ???? | |
295 | } | |
296 | // Arrays for "particles" and "hits" | |
297 | fBkgGeantParticles = new TClonesArray("TParticle", 200); | |
298 | fBkgGeantHits = new TClonesArray("AliMUONHit", 2000); | |
299 | // Event number to -1 for initialization | |
300 | fBkgGeantEventNumber = -1; | |
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(); | |
306 | if (fPrintLevel >= 2) {cout << "After cd(gAlice)" << endl; gDirectory->Dump();} | |
307 | } | |
308 | return; | |
309 | } | |
310 | ||
311 | //__________________________________________________________________________ | |
312 | void AliMUONEventReconstructor::NextBkgGeantEvent(void) | |
313 | { | |
314 | // Get next event in background file for GEANT hits | |
315 | // Goes back to event number 0 when end of file is reached | |
316 | char treeName[20]; | |
317 | TBranch *branch; | |
318 | if (fPrintLevel >= 0) { | |
319 | cout << "Enter NextBkgGeantEvent" << endl;} | |
320 | // Clean previous event | |
321 | if(fBkgGeantTK) delete fBkgGeantTK; | |
322 | fBkgGeantTK = NULL; | |
323 | if(fBkgGeantParticles) fBkgGeantParticles->Clear(); | |
324 | if(fBkgGeantTH) delete fBkgGeantTH; | |
325 | fBkgGeantTH = NULL; | |
326 | if(fBkgGeantHits) fBkgGeantHits->Clear(); | |
327 | // Increment event number | |
328 | fBkgGeantEventNumber++; | |
329 | // Get access to Particles and Hits for event from background file | |
330 | if (fPrintLevel >= 2) {cout << "Before cd(Bkg)" << endl; gDirectory->Dump();} | |
331 | fBkgGeantFile->cd(); | |
332 | if (fPrintLevel >= 2) {cout << "After cd(Bkg)" << endl; gDirectory->Dump();} | |
333 | // Particles: TreeK for event and branch "Particles" | |
334 | sprintf(treeName, "TreeK%d", fBkgGeantEventNumber); | |
335 | fBkgGeantTK = (TTree*)gDirectory->Get(treeName); | |
336 | if (!fBkgGeantTK) { | |
337 | if (fPrintLevel >= 0) { | |
338 | cout << "Cannot find Kine Tree for background event: " << | |
339 | fBkgGeantEventNumber << endl; | |
340 | cout << "Goes back to event 0" << endl; | |
341 | } | |
342 | fBkgGeantEventNumber = 0; | |
343 | sprintf(treeName, "TreeK%d", fBkgGeantEventNumber); | |
344 | fBkgGeantTK = (TTree*)gDirectory->Get(treeName); | |
345 | if (!fBkgGeantTK) { | |
346 | cout << "ERROR: cannot find Kine Tree for background event: " << | |
347 | fBkgGeantEventNumber << endl; | |
348 | exit(0); | |
349 | } | |
350 | } | |
351 | if (fBkgGeantTK) | |
352 | fBkgGeantTK->SetBranchAddress("Particles", &fBkgGeantParticles); | |
353 | fBkgGeantTK->GetEvent(0); // why event 0 ???? necessary ???? | |
354 | // Hits: TreeH for event and branch "MUON" | |
355 | sprintf(treeName, "TreeH%d", fBkgGeantEventNumber); | |
356 | fBkgGeantTH = (TTree*)gDirectory->Get(treeName); | |
357 | if (!fBkgGeantTH) { | |
358 | cout << "ERROR: cannot find Hits Tree for background event: " << | |
359 | fBkgGeantEventNumber << endl; | |
360 | exit(0); | |
361 | } | |
362 | if (fBkgGeantTH && fBkgGeantHits) { | |
363 | branch = fBkgGeantTH->GetBranch("MUON"); | |
364 | if (branch) branch->SetAddress(&fBkgGeantHits); | |
365 | } | |
366 | fBkgGeantTH->GetEntries(); // necessary ???? | |
367 | // Back to the signal file | |
368 | ((gAlice->TreeK())->GetCurrentFile())->cd(); | |
369 | if (fPrintLevel >= 2) {cout << "After cd(gAlice)" << endl; gDirectory->Dump();} | |
370 | return; | |
371 | } | |
372 | ||
373 | //__________________________________________________________________________ | |
374 | void AliMUONEventReconstructor::EventReconstruct(void) | |
375 | { | |
376 | // To reconstruct one event | |
377 | if (fPrintLevel >= 1) cout << "enter EventReconstruct" << endl; | |
378 | MakeEventToBeReconstructed(); | |
379 | MakeSegments(); | |
380 | MakeTracks(); | |
d837040f | 381 | if (fMUONData->IsTriggerTrackBranchesInTree()) |
382 | ValidateTracksWithTrigger(); | |
383 | ||
384 | // Add tracks to MUON data container | |
385 | for(Int_t i=0; i<GetNRecTracks(); i++) { | |
386 | AliMUONTrack * track = (AliMUONTrack*) GetRecTracksPtr()->At(i); | |
387 | fMUONData->AddRecTrack(*track); | |
388 | } | |
389 | ||
a9e2aefa | 390 | return; |
391 | } | |
392 | ||
276c44b7 | 393 | //__________________________________________________________________________ |
394 | void AliMUONEventReconstructor::EventReconstructTrigger(void) | |
395 | { | |
396 | // To reconstruct one event | |
397 | if (fPrintLevel >= 1) cout << "enter EventReconstructTrigger" << endl; | |
398 | MakeTriggerTracks(); | |
399 | return; | |
400 | } | |
401 | ||
a9e2aefa | 402 | //__________________________________________________________________________ |
403 | void AliMUONEventReconstructor::ResetHitsForRec(void) | |
404 | { | |
405 | // To reset the array and the number of HitsForRec, | |
406 | // and also the number of HitsForRec | |
407 | // and the index of the first HitForRec per chamber | |
408 | if (fHitsForRecPtr) fHitsForRecPtr->Clear(); | |
409 | fNHitsForRec = 0; | |
343146bf | 410 | for (Int_t ch = 0; ch < fgkMaxMuonTrackingChambers; ch++) |
a9e2aefa | 411 | fNHitsForRecPerChamber[ch] = fIndexOfFirstHitForRecPerChamber[ch] = 0; |
412 | return; | |
413 | } | |
414 | ||
415 | //__________________________________________________________________________ | |
416 | void AliMUONEventReconstructor::ResetSegments(void) | |
417 | { | |
418 | // To reset the TClonesArray of segments and the number of Segments | |
419 | // for all stations | |
30178c30 | 420 | for (Int_t st = 0; st < fgkMaxMuonTrackingStations; st++) { |
a9e2aefa | 421 | if (fSegmentsPtr[st]) fSegmentsPtr[st]->Clear(); |
422 | fNSegments[st] = 0; | |
423 | } | |
424 | return; | |
425 | } | |
426 | ||
427 | //__________________________________________________________________________ | |
428 | void AliMUONEventReconstructor::ResetTracks(void) | |
429 | { | |
430 | // To reset the TClonesArray of reconstructed tracks | |
8429a5e4 | 431 | if (fRecTracksPtr) fRecTracksPtr->Delete(); |
432 | // Delete in order that the Track destructors are called, | |
433 | // hence the space for the TClonesArray of pointers to TrackHit's is freed | |
a9e2aefa | 434 | fNRecTracks = 0; |
435 | return; | |
436 | } | |
437 | ||
276c44b7 | 438 | //__________________________________________________________________________ |
439 | void AliMUONEventReconstructor::ResetTriggerTracks(void) | |
440 | { | |
441 | // To reset the TClonesArray of reconstructed trigger tracks | |
442 | if (fRecTriggerTracksPtr) fRecTriggerTracksPtr->Delete(); | |
443 | // Delete in order that the Track destructors are called, | |
444 | // hence the space for the TClonesArray of pointers to TrackHit's is freed | |
445 | fNRecTriggerTracks = 0; | |
446 | return; | |
447 | } | |
448 | ||
8429a5e4 | 449 | //__________________________________________________________________________ |
450 | void AliMUONEventReconstructor::ResetTrackHits(void) | |
451 | { | |
452 | // To reset the TClonesArray of hits on reconstructed tracks | |
453 | if (fRecTrackHitsPtr) fRecTrackHitsPtr->Clear(); | |
454 | fNRecTrackHits = 0; | |
455 | return; | |
456 | } | |
457 | ||
a9e2aefa | 458 | //__________________________________________________________________________ |
459 | void AliMUONEventReconstructor::MakeEventToBeReconstructed(void) | |
460 | { | |
461 | // To make the list of hits to be reconstructed, | |
462 | // either from the GEANT hits or from the raw clusters | |
463 | // according to the parameter set for the reconstructor | |
e191bb57 | 464 | // TString evfoldname = AliConfig::GetDefaultEventFolderName();//to be interfaced properly |
88cb7938 | 465 | |
52c9bc11 | 466 | // AliRunLoader* rl = AliRunLoader::GetRunLoader(evfoldname); |
467 | // if (rl == 0x0) | |
468 | // { | |
469 | // Error("MakeEventToBeReconstructed", | |
470 | // "Can not find Run Loader in Event Folder named %s.", | |
471 | // evfoldname.Data()); | |
472 | // return; | |
473 | // } | |
474 | // AliLoader* gime = rl->GetLoader("MUONLoader"); | |
475 | // if (gime == 0x0) | |
476 | // { | |
477 | // Error("MakeEventToBeReconstructed","Can not get MUON Loader from Run Loader."); | |
478 | // return; | |
479 | // } | |
88cb7938 | 480 | |
a9e2aefa | 481 | if (fPrintLevel >= 1) cout << "enter MakeEventToBeReconstructed" << endl; |
482 | ResetHitsForRec(); | |
483 | if (fRecGeantHits == 1) { | |
484 | // Reconstruction from GEANT hits | |
485 | // Back to the signal file | |
52c9bc11 | 486 | TTree* treeH = fLoader->TreeH(); |
88cb7938 | 487 | if (treeH == 0x0) |
488 | { | |
52c9bc11 | 489 | Int_t retval = fLoader->LoadHits(); |
88cb7938 | 490 | if ( retval) |
491 | { | |
492 | Error("MakeEventToBeReconstructed","Error occured while loading hits."); | |
493 | return; | |
494 | } | |
52c9bc11 | 495 | treeH = fLoader->TreeH(); |
88cb7938 | 496 | if (treeH == 0x0) |
497 | { | |
498 | Error("MakeEventToBeReconstructed","Can not get TreeH"); | |
499 | return; | |
500 | } | |
501 | } | |
52c9bc11 | 502 | fMUONData->SetTreeAddress("H"); |
503 | AddHitsForRecFromGEANT(treeH); | |
88cb7938 | 504 | |
a9e2aefa | 505 | // Background hits |
506 | AddHitsForRecFromBkgGEANT(fBkgGeantTH, fBkgGeantHits); | |
507 | // Sort HitsForRec in increasing order with respect to chamber number | |
508 | SortHitsForRecWithIncreasingChamber(); | |
509 | } | |
510 | else { | |
511 | // Reconstruction from raw clusters | |
512 | // AliMUON *MUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? | |
513 | // Security on MUON ???? | |
514 | // TreeR assumed to be be "prepared" in calling function | |
515 | // by "MUON->GetTreeR(nev)" ???? | |
52c9bc11 | 516 | TTree *treeR = fLoader->TreeR(); |
517 | fMUONData->SetTreeAddress("RC"); | |
9cbdf048 | 518 | AddHitsForRecFromRawClusters(treeR); |
a9e2aefa | 519 | // No sorting: it is done automatically in the previous function |
520 | } | |
521 | if (fPrintLevel >= 10) { | |
522 | cout << "end of MakeEventToBeReconstructed" << endl; | |
523 | cout << "NHitsForRec: " << fNHitsForRec << endl; | |
343146bf | 524 | for (Int_t ch = 0; ch < fgkMaxMuonTrackingChambers; ch++) { |
a9e2aefa | 525 | cout << "chamber(0...): " << ch |
526 | << " NHitsForRec: " << fNHitsForRecPerChamber[ch] | |
527 | << " index(first HitForRec): " << fIndexOfFirstHitForRecPerChamber[ch] | |
528 | << endl; | |
529 | for (Int_t hit = fIndexOfFirstHitForRecPerChamber[ch]; | |
530 | hit < fIndexOfFirstHitForRecPerChamber[ch] + fNHitsForRecPerChamber[ch]; | |
531 | hit++) { | |
532 | cout << "HitForRec index(0...): " << hit << endl; | |
533 | ((*fHitsForRecPtr)[hit])->Dump(); | |
534 | } | |
535 | } | |
536 | } | |
537 | return; | |
538 | } | |
539 | ||
540 | //__________________________________________________________________________ | |
541 | void AliMUONEventReconstructor::AddHitsForRecFromGEANT(TTree *TH) | |
542 | { | |
543 | // To add to the list of hits for reconstruction | |
544 | // the GEANT signal hits from a hit tree TH. | |
83dbc640 | 545 | Int_t hitBits, chamBits; //AZ |
a9e2aefa | 546 | if (fPrintLevel >= 2) |
547 | cout << "enter AddHitsForRecFromGEANT with TH: " << TH << endl; | |
548 | if (TH == NULL) return; | |
52c9bc11 | 549 | // AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? |
550 | //AliMUONData * muondata = pMUON->GetMUONData(); | |
a9e2aefa | 551 | // Security on MUON ???? |
552 | // See whether it could be the same for signal and background ???? | |
553 | // Loop over tracks in tree | |
554 | Int_t ntracks = (Int_t) TH->GetEntries(); | |
555 | if (fPrintLevel >= 2) | |
556 | cout << "ntracks: " << ntracks << endl; | |
83dbc640 | 557 | fMuons = 0; //AZ |
a9e2aefa | 558 | for (Int_t track = 0; track < ntracks; track++) { |
52c9bc11 | 559 | fMUONData->ResetHits(); |
a9e2aefa | 560 | TH->GetEvent(track); |
561 | // Loop over hits | |
562 | Int_t hit = 0; | |
83dbc640 | 563 | hitBits = 0; // AZ |
564 | chamBits = 0; // AZ | |
565 | Int_t itrack = track; //AZ | |
38302c61 | 566 | |
567 | Int_t ihit, nhits=0; | |
52c9bc11 | 568 | nhits = (Int_t) fMUONData->Hits()->GetEntriesFast(); |
38302c61 | 569 | AliMUONHit* mHit=0x0; |
1391e633 | 570 | |
38302c61 | 571 | for(ihit=0; ihit<nhits; ihit++) { |
52c9bc11 | 572 | mHit = static_cast<AliMUONHit*>(fMUONData->Hits()->At(ihit)); |
38302c61 | 573 | Int_t ipart = TMath::Abs ((Int_t) mHit->Particle()); //AZ |
574 | if (NewHitForRecFromGEANT(mHit,track, hit, 1) && ipart == 13 | |
575 | //if (NewHitForRecFromGEANT(mHit,itrack-1, hit, 1) && ipart == 13 | |
1391e633 | 576 | && itrack <= 2 && !BIT(mHit->Chamber()-1) ) chamBits |= BIT(mHit->Chamber()-1); //AZ - set bit |
38302c61 | 577 | } |
1391e633 | 578 | |
83dbc640 | 579 | if (chamBits&3 && chamBits>>2&3 && chamBits>>4&3 && chamBits>>6&3 && |
580 | chamBits>>8&3 && ((chamBits>>6&3)==3 || (chamBits>>8&3)==3)) | |
581 | fMuons += 1; //AZ | |
582 | //if (chamBits&3 && chamBits>>2&3 && chamBits>>4&3 && chamBits>>6&3 && | |
583 | // chamBits>>8&3 && ((chamBits>>6&3)==3 || (chamBits>>8&3)==3) && | |
584 | // ((chamBits&3)==3 || (chamBits>>2&3)==3)) fMuons += 1; | |
a9e2aefa | 585 | } // end of track loop |
586 | return; | |
587 | } | |
588 | ||
589 | //__________________________________________________________________________ | |
590 | void AliMUONEventReconstructor::AddHitsForRecFromBkgGEANT(TTree *TH, TClonesArray *Hits) | |
591 | { | |
592 | // To add to the list of hits for reconstruction | |
593 | // the GEANT background hits from a hit tree TH and a pointer Hits to a hit list. | |
594 | // How to have only one function "AddHitsForRecFromGEANT" ???? | |
595 | if (fPrintLevel >= 2) | |
596 | cout << "enter AddHitsForRecFromBkgGEANT with TH: " << TH << endl; | |
597 | if (TH == NULL) return; | |
598 | // Loop over tracks in tree | |
599 | Int_t ntracks = (Int_t) TH->GetEntries(); | |
600 | if (fPrintLevel >= 2) | |
601 | cout << "ntracks: " << ntracks << endl; | |
602 | for (Int_t track = 0; track < ntracks; track++) { | |
603 | if (Hits) Hits->Clear(); | |
604 | TH->GetEvent(track); | |
605 | // Loop over hits | |
606 | for (Int_t hit = 0; hit < Hits->GetEntriesFast(); hit++) { | |
607 | NewHitForRecFromGEANT((AliMUONHit*) (*Hits)[hit], track, hit, 0); | |
608 | } // end of hit loop | |
609 | } // end of track loop | |
610 | return; | |
611 | } | |
612 | ||
613 | //__________________________________________________________________________ | |
614 | AliMUONHitForRec* AliMUONEventReconstructor::NewHitForRecFromGEANT(AliMUONHit* Hit, Int_t TrackNumber, Int_t HitNumber, Int_t Signal) | |
615 | { | |
616 | // To make a new hit for reconstruction from a GEANT hit pointed to by "Hit", | |
617 | // with hit number "HitNumber" in the track numbered "TrackNumber", | |
618 | // either from signal ("Signal" = 1) or background ("Signal" = 0) event. | |
619 | // Selects hits in tracking (not trigger) chambers. | |
620 | // Takes into account the efficiency (fEfficiency) | |
621 | // and the smearing from resolution (fBendingResolution and fNonBendingResolution). | |
622 | // Adds a condition on the radius between RMin and RMax | |
623 | // to better simulate the real chambers. | |
624 | // Returns the pointer to the new hit for reconstruction, | |
625 | // or NULL in case of inefficiency or non tracking chamber or bad radius. | |
626 | // No condition on at most 20 cm from a muon from a resonance | |
627 | // like in Fortran TRACKF_STAT. | |
628 | AliMUONHitForRec* hitForRec; | |
629 | Double_t bendCoor, nonBendCoor, radius; | |
0a5f36d9 | 630 | Int_t chamber = Hit->Chamber() - 1; // chamber(0...) |
a9e2aefa | 631 | // only in tracking chambers (fChamber starts at 1) |
343146bf | 632 | if (chamber >= fgkMaxMuonTrackingChambers) return NULL; |
a9e2aefa | 633 | // only if hit is efficient (keep track for checking ????) |
634 | if (gRandom->Rndm() > fEfficiency) return NULL; | |
635 | // only if radius between RMin and RMax | |
94de3818 | 636 | bendCoor = Hit->Y(); |
637 | nonBendCoor = Hit->X(); | |
a9e2aefa | 638 | radius = TMath::Sqrt((bendCoor * bendCoor) + (nonBendCoor * nonBendCoor)); |
d0bfce8d | 639 | // This cut is not needed with a realistic chamber geometry !!!! |
640 | // if ((radius < fRMin[chamber]) || (radius > fRMax[chamber])) return NULL; | |
a9e2aefa | 641 | // new AliMUONHitForRec from GEANT hit and increment number of AliMUONHitForRec's |
642 | hitForRec = new ((*fHitsForRecPtr)[fNHitsForRec]) AliMUONHitForRec(Hit); | |
643 | fNHitsForRec++; | |
644 | // add smearing from resolution | |
645 | hitForRec->SetBendingCoor(bendCoor + gRandom->Gaus(0., fBendingResolution)); | |
646 | hitForRec->SetNonBendingCoor(nonBendCoor | |
647 | + gRandom->Gaus(0., fNonBendingResolution)); | |
d0bfce8d | 648 | // // !!!! without smearing |
649 | // hitForRec->SetBendingCoor(bendCoor); | |
650 | // hitForRec->SetNonBendingCoor(nonBendCoor); | |
a9e2aefa | 651 | // more information into HitForRec |
652 | // resolution: angular effect to be added here ???? | |
653 | hitForRec->SetBendingReso2(fBendingResolution * fBendingResolution); | |
654 | hitForRec->SetNonBendingReso2(fNonBendingResolution * fNonBendingResolution); | |
655 | // GEANT track info | |
656 | hitForRec->SetHitNumber(HitNumber); | |
657 | hitForRec->SetTHTrack(TrackNumber); | |
658 | hitForRec->SetGeantSignal(Signal); | |
659 | if (fPrintLevel >= 10) { | |
660 | cout << "track: " << TrackNumber << " hit: " << HitNumber << endl; | |
661 | Hit->Dump(); | |
662 | cout << "AliMUONHitForRec number (1...): " << fNHitsForRec << endl; | |
663 | hitForRec->Dump();} | |
664 | return hitForRec; | |
665 | } | |
666 | ||
667 | //__________________________________________________________________________ | |
668 | void AliMUONEventReconstructor::SortHitsForRecWithIncreasingChamber() | |
669 | { | |
670 | // Sort HitsForRec's in increasing order with respect to chamber number. | |
671 | // Uses the function "Compare". | |
672 | // Update the information for HitsForRec per chamber too. | |
673 | Int_t ch, nhits, prevch; | |
674 | fHitsForRecPtr->Sort(); | |
343146bf | 675 | for (ch = 0; ch < fgkMaxMuonTrackingChambers; ch++) { |
a9e2aefa | 676 | fNHitsForRecPerChamber[ch] = 0; |
677 | fIndexOfFirstHitForRecPerChamber[ch] = 0; | |
678 | } | |
679 | prevch = 0; // previous chamber | |
680 | nhits = 0; // number of hits in current chamber | |
681 | // Loop over HitsForRec | |
682 | for (Int_t hit = 0; hit < fNHitsForRec; hit++) { | |
683 | // chamber number (0...) | |
684 | ch = ((AliMUONHitForRec*) ((*fHitsForRecPtr)[hit]))->GetChamberNumber(); | |
685 | // increment number of hits in current chamber | |
686 | (fNHitsForRecPerChamber[ch])++; | |
687 | // update index of first HitForRec in current chamber | |
688 | // if chamber number different from previous one | |
689 | if (ch != prevch) { | |
690 | fIndexOfFirstHitForRecPerChamber[ch] = hit; | |
691 | prevch = ch; | |
692 | } | |
693 | } | |
694 | return; | |
695 | } | |
696 | ||
697 | // //__________________________________________________________________________ | |
698 | // void AliMUONEventReconstructor::AddHitsForRecFromCathodeCorrelations(TTree* TC) | |
699 | // { | |
700 | // // OLD VERSION WHEN ONE ONE WAS USING SO CALLED CATHODE CORRELATIONS | |
701 | // // To add to the list of hits for reconstruction | |
702 | // // the (cathode correlated) raw clusters | |
703 | // // No condition added, like in Fortran TRACKF_STAT, | |
704 | // // on the radius between RMin and RMax. | |
705 | // AliMUONHitForRec *hitForRec; | |
706 | // if (fPrintLevel >= 1) cout << "enter AddHitsForRecFromCathodeCorrelations" << endl; | |
707 | // AliMUON *MUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? | |
708 | // // Security on MUON ???? | |
709 | // // Loop over tracking chambers | |
343146bf | 710 | // for (Int_t ch = 0; ch < fgkMaxMuonTrackingChambers; ch++) { |
a9e2aefa | 711 | // // number of HitsForRec to 0 for the chamber |
712 | // fNHitsForRecPerChamber[ch] = 0; | |
713 | // // index of first HitForRec for the chamber | |
714 | // if (ch == 0) fIndexOfFirstHitForRecPerChamber[ch] = 0; | |
715 | // else fIndexOfFirstHitForRecPerChamber[ch] = fNHitsForRec; | |
716 | // TClonesArray *reconst_hits = MUON->ReconstHitsAddress(ch); | |
717 | // MUON->ResetReconstHits(); | |
718 | // TC->GetEvent(); | |
719 | // Int_t ncor = (Int_t)reconst_hits->GetEntries(); | |
720 | // // Loop over (cathode correlated) raw clusters | |
721 | // for (Int_t cor = 0; cor < ncor; cor++) { | |
722 | // AliMUONReconstHit * mCor = | |
723 | // (AliMUONReconstHit*) reconst_hits->UncheckedAt(cor); | |
724 | // // new AliMUONHitForRec from (cathode correlated) raw cluster | |
725 | // // and increment number of AliMUONHitForRec's (total and in chamber) | |
726 | // hitForRec = new ((*fHitsForRecPtr)[fNHitsForRec]) AliMUONHitForRec(mCor); | |
727 | // fNHitsForRec++; | |
728 | // (fNHitsForRecPerChamber[ch])++; | |
729 | // // more information into HitForRec | |
730 | // hitForRec->SetChamberNumber(ch); | |
731 | // hitForRec->SetHitNumber(cor); | |
732 | // // Z coordinate of the chamber (cm) with sign opposite to GEANT sign | |
733 | // // could (should) be more exact from chamber geometry ???? | |
734 | // hitForRec->SetZ(-(&(MUON->Chamber(ch)))->Z()); | |
735 | // if (fPrintLevel >= 10) { | |
736 | // cout << "chamber (0...): " << ch << | |
737 | // " cathcorrel (0...): " << cor << endl; | |
738 | // mCor->Dump(); | |
739 | // cout << "AliMUONHitForRec number (1...): " << fNHitsForRec << endl; | |
740 | // hitForRec->Dump();} | |
741 | // } // end of cluster loop | |
742 | // } // end of chamber loop | |
743 | // return; | |
744 | // } | |
745 | ||
746 | //__________________________________________________________________________ | |
747 | void AliMUONEventReconstructor::AddHitsForRecFromRawClusters(TTree* TR) | |
748 | { | |
749 | // To add to the list of hits for reconstruction all the raw clusters | |
750 | // No condition added, like in Fortran TRACKF_STAT, | |
751 | // on the radius between RMin and RMax. | |
752 | AliMUONHitForRec *hitForRec; | |
753 | AliMUONRawCluster *clus; | |
f69d51b5 | 754 | Int_t iclus, nclus, nTRentries; |
a9e2aefa | 755 | TClonesArray *rawclusters; |
756 | if (fPrintLevel >= 1) cout << "enter AddHitsForRecFromRawClusters" << endl; | |
88cb7938 | 757 | |
e191bb57 | 758 | // TString evfoldname = AliConfig::GetDefaultEventFolderName();//to be interfaced properly |
52c9bc11 | 759 | // AliRunLoader* rl = AliRunLoader::GetRunLoader(evfoldname); |
760 | // if (rl == 0x0) | |
761 | // { | |
762 | // Error("MakeEventToBeReconstructed", | |
763 | // "Can not find Run Loader in Event Folder named %s.", | |
764 | // evfoldname.Data()); | |
765 | // return; | |
766 | // } | |
767 | // AliLoader* gime = rl->GetLoader("MUONLoader"); | |
768 | // if (gime == 0x0) | |
769 | // { | |
770 | // Error("MakeEventToBeReconstructed","Can not get MUON Loader from Run Loader."); | |
771 | // return; | |
772 | // } | |
773 | // // Loading AliRun master | |
774 | // rl->LoadgAlice(); | |
775 | // gAlice = rl->GetAliRun(); | |
88cb7938 | 776 | |
777 | // Loading MUON subsystem | |
52c9bc11 | 778 | // AliMUON * pMUON = (AliMUON *) gAlice->GetDetector("MUON"); |
88cb7938 | 779 | |
f69d51b5 | 780 | nTRentries = Int_t(TR->GetEntries()); |
781 | if (nTRentries != 1) { | |
782 | cout << "Error in AliMUONEventReconstructor::AddHitsForRecFromRawClusters" | |
783 | << endl; | |
784 | cout << "nTRentries = " << nTRentries << " not equal to 1" << endl; | |
785 | exit(0); | |
786 | } | |
52c9bc11 | 787 | fLoader->TreeR()->GetEvent(0); // only one entry |
788 | ||
a9e2aefa | 789 | // Loop over tracking chambers |
343146bf | 790 | for (Int_t ch = 0; ch < fgkMaxMuonTrackingChambers; ch++) { |
a9e2aefa | 791 | // number of HitsForRec to 0 for the chamber |
792 | fNHitsForRecPerChamber[ch] = 0; | |
793 | // index of first HitForRec for the chamber | |
794 | if (ch == 0) fIndexOfFirstHitForRecPerChamber[ch] = 0; | |
795 | else fIndexOfFirstHitForRecPerChamber[ch] = fNHitsForRec; | |
52c9bc11 | 796 | rawclusters =fMUONData->RawClusters(ch); |
f69d51b5 | 797 | // pMUON->ResetRawClusters(); |
798 | // TR->GetEvent((Int_t) (TR->GetEntries()) - 1); // to be checked ???? | |
a9e2aefa | 799 | nclus = (Int_t) (rawclusters->GetEntries()); |
800 | // Loop over (cathode correlated) raw clusters | |
801 | for (iclus = 0; iclus < nclus; iclus++) { | |
802 | clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(iclus); | |
803 | // new AliMUONHitForRec from raw cluster | |
804 | // and increment number of AliMUONHitForRec's (total and in chamber) | |
805 | hitForRec = new ((*fHitsForRecPtr)[fNHitsForRec]) AliMUONHitForRec(clus); | |
806 | fNHitsForRec++; | |
807 | (fNHitsForRecPerChamber[ch])++; | |
808 | // more information into HitForRec | |
809 | // resolution: info should be already in raw cluster and taken from it ???? | |
810 | hitForRec->SetBendingReso2(fBendingResolution * fBendingResolution); | |
811 | hitForRec->SetNonBendingReso2(fNonBendingResolution * fNonBendingResolution); | |
812 | // original raw cluster | |
813 | hitForRec->SetChamberNumber(ch); | |
814 | hitForRec->SetHitNumber(iclus); | |
ba5b68db | 815 | // Z coordinate of the raw cluster (cm) |
ba12c242 | 816 | hitForRec->SetZ(clus->GetZ(0)); |
a9e2aefa | 817 | if (fPrintLevel >= 10) { |
818 | cout << "chamber (0...): " << ch << | |
819 | " raw cluster (0...): " << iclus << endl; | |
820 | clus->Dump(); | |
821 | cout << "AliMUONHitForRec number (1...): " << fNHitsForRec << endl; | |
822 | hitForRec->Dump();} | |
823 | } // end of cluster loop | |
824 | } // end of chamber loop | |
83dbc640 | 825 | SortHitsForRecWithIncreasingChamber(); //AZ |
a9e2aefa | 826 | return; |
827 | } | |
828 | ||
829 | //__________________________________________________________________________ | |
830 | void AliMUONEventReconstructor::MakeSegments(void) | |
831 | { | |
832 | // To make the list of segments in all stations, | |
833 | // from the list of hits to be reconstructed | |
834 | if (fPrintLevel >= 1) cout << "enter MakeSegments" << endl; | |
835 | ResetSegments(); | |
836 | // Loop over stations | |
83dbc640 | 837 | Int_t nb = (fTrackMethod == 2) ? 3 : 0; //AZ |
30178c30 | 838 | //AZ for (Int_t st = 0; st < fgkMaxMuonTrackingStations; st++) |
839 | for (Int_t st = nb; st < fgkMaxMuonTrackingStations; st++) //AZ | |
a9e2aefa | 840 | MakeSegmentsPerStation(st); |
841 | if (fPrintLevel >= 10) { | |
842 | cout << "end of MakeSegments" << endl; | |
30178c30 | 843 | for (Int_t st = 0; st < fgkMaxMuonTrackingStations; st++) { |
a9e2aefa | 844 | cout << "station(0...): " << st |
845 | << " Segments: " << fNSegments[st] | |
846 | << endl; | |
847 | for (Int_t seg = 0; | |
848 | seg < fNSegments[st]; | |
849 | seg++) { | |
850 | cout << "Segment index(0...): " << seg << endl; | |
851 | ((*fSegmentsPtr[st])[seg])->Dump(); | |
852 | } | |
853 | } | |
854 | } | |
855 | return; | |
856 | } | |
857 | ||
858 | //__________________________________________________________________________ | |
859 | void AliMUONEventReconstructor::MakeSegmentsPerStation(Int_t Station) | |
860 | { | |
861 | // To make the list of segments in station number "Station" (0...) | |
862 | // from the list of hits to be reconstructed. | |
863 | // Updates "fNSegments"[Station]. | |
864 | // Segments in stations 4 and 5 are sorted | |
865 | // according to increasing absolute value of "impact parameter" | |
866 | AliMUONHitForRec *hit1Ptr, *hit2Ptr; | |
867 | AliMUONSegment *segment; | |
868 | Bool_t last2st; | |
869 | Double_t bendingSlope, distBend, distNonBend, extBendCoor, extNonBendCoor, | |
d0bfce8d | 870 | impactParam = 0., maxImpactParam = 0., minImpactParam = 0.; // =0 to avoid compilation warnings. |
9cbdf048 | 871 | AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? |
a9e2aefa | 872 | if (fPrintLevel >= 1) |
873 | cout << "enter MakeSegmentsPerStation (0...) " << Station << endl; | |
874 | // first and second chambers (0...) in the station | |
875 | Int_t ch1 = 2 * Station; | |
876 | Int_t ch2 = ch1 + 1; | |
877 | // variable true for stations downstream of the dipole: | |
878 | // Station(0..4) equal to 3 or 4 | |
879 | if ((Station == 3) || (Station == 4)) { | |
880 | last2st = kTRUE; | |
881 | // maximum impact parameter (cm) according to fMinBendingMomentum... | |
882 | maxImpactParam = | |
883 | TMath::Abs(GetImpactParamFromBendingMomentum(fMinBendingMomentum)); | |
d0bfce8d | 884 | // minimum impact parameter (cm) according to fMaxBendingMomentum... |
885 | minImpactParam = | |
886 | TMath::Abs(GetImpactParamFromBendingMomentum(fMaxBendingMomentum)); | |
a9e2aefa | 887 | } |
888 | else last2st = kFALSE; | |
889 | // extrapolation factor from Z of first chamber to Z of second chamber | |
890 | // dZ to be changed to take into account fine structure of chambers ???? | |
891 | Double_t extrapFact = | |
9cbdf048 | 892 | (&(pMUON->Chamber(ch2)))->Z() / (&(pMUON->Chamber(ch1)))->Z(); |
a9e2aefa | 893 | // index for current segment |
894 | Int_t segmentIndex = 0; | |
895 | // Loop over HitsForRec in the first chamber of the station | |
896 | for (Int_t hit1 = fIndexOfFirstHitForRecPerChamber[ch1]; | |
897 | hit1 < fIndexOfFirstHitForRecPerChamber[ch1] + fNHitsForRecPerChamber[ch1]; | |
898 | hit1++) { | |
899 | // pointer to the HitForRec | |
900 | hit1Ptr = (AliMUONHitForRec*) ((*fHitsForRecPtr)[hit1]); | |
901 | // extrapolation, | |
902 | // on the straight line joining the HitForRec to the vertex (0,0,0), | |
903 | // to the Z of the second chamber of the station | |
904 | extBendCoor = extrapFact * hit1Ptr->GetBendingCoor(); | |
905 | extNonBendCoor = extrapFact * hit1Ptr->GetNonBendingCoor(); | |
906 | // Loop over HitsForRec in the second chamber of the station | |
907 | for (Int_t hit2 = fIndexOfFirstHitForRecPerChamber[ch2]; | |
908 | hit2 < fIndexOfFirstHitForRecPerChamber[ch2] + fNHitsForRecPerChamber[ch2]; | |
909 | hit2++) { | |
910 | // pointer to the HitForRec | |
911 | hit2Ptr = (AliMUONHitForRec*) ((*fHitsForRecPtr)[hit2]); | |
912 | // absolute values of distances, in bending and non bending planes, | |
913 | // between the HitForRec in the second chamber | |
914 | // and the previous extrapolation | |
915 | distBend = TMath::Abs(hit2Ptr->GetBendingCoor() - extBendCoor); | |
916 | distNonBend = TMath::Abs(hit2Ptr->GetNonBendingCoor() - extNonBendCoor); | |
917 | if (last2st) { | |
918 | // bending slope | |
919 | bendingSlope = (hit1Ptr->GetBendingCoor() - hit2Ptr->GetBendingCoor()) / | |
920 | (hit1Ptr->GetZ() - hit2Ptr->GetZ()); | |
921 | // absolute value of impact parameter | |
922 | impactParam = | |
31817925 | 923 | TMath::Abs(hit1Ptr->GetBendingCoor() - hit1Ptr->GetZ() * bendingSlope); |
a9e2aefa | 924 | } |
925 | // check for distances not too large, | |
926 | // and impact parameter not too big if stations downstream of the dipole. | |
927 | // Conditions "distBend" and "impactParam" correlated for these stations ???? | |
928 | if ((distBend < fSegmentMaxDistBending[Station]) && | |
929 | (distNonBend < fSegmentMaxDistNonBending[Station]) && | |
d0bfce8d | 930 | (!last2st || (impactParam < maxImpactParam)) && |
931 | (!last2st || (impactParam > minImpactParam))) { | |
a9e2aefa | 932 | // make new segment |
933 | segment = new ((*fSegmentsPtr[Station])[segmentIndex]) | |
934 | AliMUONSegment(hit1Ptr, hit2Ptr); | |
935 | // update "link" to this segment from the hit in the first chamber | |
936 | if (hit1Ptr->GetNSegments() == 0) | |
937 | hit1Ptr->SetIndexOfFirstSegment(segmentIndex); | |
938 | hit1Ptr->SetNSegments(hit1Ptr->GetNSegments() + 1); | |
939 | if (fPrintLevel >= 10) { | |
940 | cout << "segmentIndex(0...): " << segmentIndex | |
941 | << " distBend: " << distBend | |
942 | << " distNonBend: " << distNonBend | |
943 | << endl; | |
944 | segment->Dump(); | |
945 | cout << "HitForRec in first chamber" << endl; | |
946 | hit1Ptr->Dump(); | |
947 | cout << "HitForRec in second chamber" << endl; | |
948 | hit2Ptr->Dump(); | |
949 | }; | |
950 | // increment index for current segment | |
951 | segmentIndex++; | |
952 | } | |
953 | } //for (Int_t hit2 | |
954 | } // for (Int_t hit1... | |
955 | fNSegments[Station] = segmentIndex; | |
956 | // Sorting according to "impact parameter" if station(1..5) 4 or 5, | |
957 | // i.e. Station(0..4) 3 or 4, using the function "Compare". | |
958 | // After this sorting, it is impossible to use | |
959 | // the "fNSegments" and "fIndexOfFirstSegment" | |
960 | // of the HitForRec in the first chamber to explore all segments formed with it. | |
961 | // Is this sorting really needed ???? | |
962 | if ((Station == 3) || (Station == 4)) (fSegmentsPtr[Station])->Sort(); | |
963 | if (fPrintLevel >= 1) cout << "Station: " << Station << " NSegments: " | |
964 | << fNSegments[Station] << endl; | |
965 | return; | |
966 | } | |
967 | ||
968 | //__________________________________________________________________________ | |
969 | void AliMUONEventReconstructor::MakeTracks(void) | |
970 | { | |
971 | // To make the tracks, | |
972 | // from the list of segments and points in all stations | |
973 | if (fPrintLevel >= 1) cout << "enter MakeTracks" << endl; | |
8429a5e4 | 974 | // The order may be important for the following Reset's |
a9e2aefa | 975 | ResetTracks(); |
8429a5e4 | 976 | ResetTrackHits(); |
83dbc640 | 977 | if (fTrackMethod == 2) { //AZ - Kalman filter |
978 | MakeTrackCandidatesK(); | |
979 | // Follow tracks in stations(1..) 3, 2 and 1 | |
980 | FollowTracksK(); | |
981 | // Remove double tracks | |
982 | RemoveDoubleTracksK(); | |
983 | // Propagate tracks to the vertex thru absorber | |
984 | GoToVertex(); | |
d837040f | 985 | } else { |
83dbc640 | 986 | // Look for candidates from at least 3 aligned points in stations(1..) 4 and 5 |
987 | MakeTrackCandidates(); | |
988 | // Follow tracks in stations(1..) 3, 2 and 1 | |
989 | FollowTracks(); | |
990 | // Remove double tracks | |
991 | RemoveDoubleTracks(); | |
d837040f | 992 | UpdateTrackParamAtHit(); |
52c9bc11 | 993 | } |
a9e2aefa | 994 | return; |
995 | } | |
996 | ||
276c44b7 | 997 | //__________________________________________________________________________ |
d837040f | 998 | void AliMUONEventReconstructor::ValidateTracksWithTrigger(void) |
999 | { | |
1000 | AliMUONTrack *track; | |
24ab3324 | 1001 | TClonesArray *recTriggerTracks; |
1002 | ||
1003 | fMUONData->ResetRecTriggerTracks(); | |
1004 | fMUONData->SetTreeAddress("RL"); | |
1005 | fMUONData->GetRecTriggerTracks(); | |
1006 | recTriggerTracks = fMUONData->RecTriggerTracks(); | |
e8765288 | 1007 | |
d837040f | 1008 | track = (AliMUONTrack*) fRecTracksPtr->First(); |
1009 | while (track) { | |
1010 | track->MatchTriggerTrack(recTriggerTracks); | |
1011 | track = (AliMUONTrack*) fRecTracksPtr->After(track); | |
e8765288 | 1012 | } |
24ab3324 | 1013 | |
d837040f | 1014 | } |
1015 | ||
1016 | //__________________________________________________________________________ | |
1017 | Bool_t AliMUONEventReconstructor::MakeTriggerTracks(void) | |
276c44b7 | 1018 | { |
1019 | // To make the trigger tracks from Local Trigger | |
1020 | if (fPrintLevel >= 1) cout << "enter MakeTriggerTracks" << endl; | |
52c9bc11 | 1021 | // ResetTriggerTracks(); |
276c44b7 | 1022 | |
1023 | Int_t nTRentries; | |
52c9bc11 | 1024 | Long_t gloTrigPat; |
276c44b7 | 1025 | TClonesArray *localTrigger; |
9131b4fe | 1026 | TClonesArray *globalTrigger; |
276c44b7 | 1027 | AliMUONLocalTrigger *locTrg; |
9131b4fe | 1028 | AliMUONGlobalTrigger *gloTrg; |
276c44b7 | 1029 | AliMUONTriggerCircuit *circuit; |
52c9bc11 | 1030 | AliMUONTriggerTrack *recTriggerTrack = 0; |
d837040f | 1031 | |
30178c30 | 1032 | TTree* treeR = fLoader->TreeR(); |
276c44b7 | 1033 | |
276c44b7 | 1034 | // Loading MUON subsystem |
1035 | AliMUON * pMUON = (AliMUON *) gAlice->GetDetector("MUON"); | |
1036 | ||
30178c30 | 1037 | nTRentries = Int_t(treeR->GetEntries()); |
d837040f | 1038 | |
30178c30 | 1039 | treeR->GetEvent(0); // only one entry |
d837040f | 1040 | |
1041 | if (!(fMUONData->IsTriggerBranchesInTree())) { | |
1042 | cout << "Warning in AliMUONEventReconstructor::MakeTriggerTracks" | |
52c9bc11 | 1043 | << endl; |
d837040f | 1044 | cout << "Trigger information is not avalaible, nTRentries = " << nTRentries << " not equal to 1" << endl; |
1045 | return kFALSE; | |
276c44b7 | 1046 | } |
276c44b7 | 1047 | |
52c9bc11 | 1048 | fMUONData->SetTreeAddress("GLT"); |
1049 | fMUONData->GetTrigger(); | |
9131b4fe | 1050 | |
52c9bc11 | 1051 | // global trigger for trigger pattern |
9131b4fe | 1052 | gloTrigPat = 0; |
52c9bc11 | 1053 | globalTrigger = fMUONData->GlobalTrigger(); |
9131b4fe | 1054 | gloTrg = (AliMUONGlobalTrigger*)globalTrigger->UncheckedAt(0); |
1055 | if (gloTrg->SinglePlusLpt()) gloTrigPat|= 0x1; | |
1056 | if (gloTrg->SinglePlusHpt()) gloTrigPat|= 0x2; | |
1057 | if (gloTrg->SinglePlusApt()) gloTrigPat|= 0x4; | |
1058 | ||
1059 | if (gloTrg->SingleMinusLpt()) gloTrigPat|= 0x8; | |
1060 | if (gloTrg->SingleMinusHpt()) gloTrigPat|= 0x10; | |
1061 | if (gloTrg->SingleMinusApt()) gloTrigPat|= 0x20; | |
1062 | ||
1063 | if (gloTrg->SingleUndefLpt()) gloTrigPat|= 0x40; | |
1064 | if (gloTrg->SingleUndefHpt()) gloTrigPat|= 0x80; | |
1065 | if (gloTrg->SingleUndefApt()) gloTrigPat|= 0x100; | |
1066 | ||
1067 | if (gloTrg->PairUnlikeLpt()) gloTrigPat|= 0x200; | |
1068 | if (gloTrg->PairUnlikeHpt()) gloTrigPat|= 0x400; | |
1069 | if (gloTrg->PairUnlikeApt()) gloTrigPat|= 0x800; | |
1070 | ||
1071 | if (gloTrg->PairLikeLpt()) gloTrigPat|= 0x1000; | |
1072 | if (gloTrg->PairLikeHpt()) gloTrigPat|= 0x2000; | |
1073 | if (gloTrg->PairLikeApt()) gloTrigPat|= 0x4000; | |
1074 | ||
52c9bc11 | 1075 | |
1076 | ||
1077 | // local trigger for tracking | |
1078 | localTrigger = fMUONData->LocalTrigger(); | |
276c44b7 | 1079 | Int_t nlocals = (Int_t) (localTrigger->GetEntries()); |
1080 | Float_t z11 = ( &(pMUON->Chamber(10)) )->Z(); | |
1081 | Float_t z21 = ( &(pMUON->Chamber(12)) )->Z(); | |
1082 | ||
1083 | for (Int_t i=0; i<nlocals; i++) { // loop on Local Trigger | |
52c9bc11 | 1084 | locTrg = (AliMUONLocalTrigger*)localTrigger->UncheckedAt(i); |
1085 | circuit = &(pMUON->TriggerCircuit(locTrg->LoCircuit())); | |
1086 | Float_t y11 = circuit->GetY11Pos(locTrg->LoStripX()); | |
aeb4f510 | 1087 | Int_t stripX21 = locTrg->LoStripX()+locTrg->LoDev()+1; |
1088 | Float_t y21 = circuit->GetY21Pos(stripX21); | |
52c9bc11 | 1089 | Float_t x11 = circuit->GetX11Pos(locTrg->LoStripY()); |
1090 | Float_t thetax = TMath::ATan2( x11 , z11 ); | |
1091 | Float_t thetay = TMath::ATan2( (y21-y11) , (z21-z11) ); | |
1092 | ||
1093 | recTriggerTrack = new AliMUONTriggerTrack(x11,y11,thetax,thetay,gloTrigPat,this); | |
1094 | // since static statement does not work, set gloTrigPat for each track | |
1095 | ||
1096 | // fNRecTriggerTracks++; | |
1097 | fMUONData->AddRecTriggerTrack(*recTriggerTrack); | |
276c44b7 | 1098 | } // end of loop on Local Trigger |
d837040f | 1099 | return kTRUE; |
276c44b7 | 1100 | } |
1101 | ||
a9e2aefa | 1102 | //__________________________________________________________________________ |
1103 | Int_t AliMUONEventReconstructor::MakeTrackCandidatesWithTwoSegments(AliMUONSegment *BegSegment) | |
1104 | { | |
1105 | // To make track candidates with two segments in stations(1..) 4 and 5, | |
1106 | // the first segment being pointed to by "BegSegment". | |
1107 | // Returns the number of such track candidates. | |
1108 | Int_t endStation, iEndSegment, nbCan2Seg; | |
1109 | AliMUONSegment *endSegment, *extrapSegment; | |
1110 | AliMUONTrack *recTrack; | |
1111 | Double_t mcsFactor; | |
1112 | if (fPrintLevel >= 1) cout << "enter MakeTrackCandidatesWithTwoSegments" << endl; | |
1113 | // Station for the end segment | |
1114 | endStation = 7 - (BegSegment->GetHitForRec1())->GetChamberNumber() / 2; | |
1115 | // multiple scattering factor corresponding to one chamber | |
1116 | mcsFactor = 0.0136 / | |
1117 | GetBendingMomentumFromImpactParam(BegSegment->GetBendingImpact()); | |
1118 | mcsFactor = fChamberThicknessInX0 * mcsFactor * mcsFactor; | |
1119 | // linear extrapolation to end station | |
1120 | extrapSegment = | |
1121 | BegSegment->CreateSegmentFromLinearExtrapToStation(endStation, mcsFactor); | |
1122 | // number of candidates with 2 segments to 0 | |
1123 | nbCan2Seg = 0; | |
1124 | // Loop over segments in the end station | |
1125 | for (iEndSegment = 0; iEndSegment < fNSegments[endStation]; iEndSegment++) { | |
1126 | // pointer to segment | |
1127 | endSegment = (AliMUONSegment*) ((*fSegmentsPtr[endStation])[iEndSegment]); | |
1128 | // test compatibility between current segment and "extrapSegment" | |
04b5ea16 | 1129 | // 4 because 4 quantities in chi2 |
a9e2aefa | 1130 | if ((endSegment-> |
1131 | NormalizedChi2WithSegment(extrapSegment, | |
1132 | fMaxSigma2Distance)) <= 4.0) { | |
1133 | // both segments compatible: | |
1134 | // make track candidate from "begSegment" and "endSegment" | |
1135 | if (fPrintLevel >= 2) | |
1136 | cout << "TrackCandidate with Segment " << iEndSegment << | |
1137 | " in Station(0..) " << endStation << endl; | |
1138 | // flag for both segments in one track: | |
1139 | // to be done in track constructor ???? | |
1140 | BegSegment->SetInTrack(kTRUE); | |
1141 | endSegment->SetInTrack(kTRUE); | |
1142 | recTrack = new ((*fRecTracksPtr)[fNRecTracks]) | |
1143 | AliMUONTrack(BegSegment, endSegment, this); | |
1144 | fNRecTracks++; | |
1145 | if (fPrintLevel >= 10) recTrack->RecursiveDump(); | |
1146 | // increment number of track candidates with 2 segments | |
1147 | nbCan2Seg++; | |
1148 | } | |
1149 | } // for (iEndSegment = 0;... | |
1150 | delete extrapSegment; // should not delete HitForRec's it points to !!!! | |
1151 | return nbCan2Seg; | |
1152 | } | |
1153 | ||
1154 | //__________________________________________________________________________ | |
1155 | Int_t AliMUONEventReconstructor::MakeTrackCandidatesWithOneSegmentAndOnePoint(AliMUONSegment *BegSegment) | |
1156 | { | |
1157 | // To make track candidates with one segment and one point | |
1158 | // in stations(1..) 4 and 5, | |
1159 | // the segment being pointed to by "BegSegment". | |
1160 | Int_t ch, ch1, ch2, endStation, iHit, iHitMax, iHitMin, nbCan1Seg1Hit; | |
1161 | AliMUONHitForRec *extrapHitForRec, *hit; | |
1162 | AliMUONTrack *recTrack; | |
1163 | Double_t mcsFactor; | |
1164 | if (fPrintLevel >= 1) | |
1165 | cout << "enter MakeTrackCandidatesWithOneSegmentAndOnePoint" << endl; | |
1166 | // station for the end point | |
1167 | endStation = 7 - (BegSegment->GetHitForRec1())->GetChamberNumber() / 2; | |
1168 | // multiple scattering factor corresponding to one chamber | |
1169 | mcsFactor = 0.0136 / | |
1170 | GetBendingMomentumFromImpactParam(BegSegment->GetBendingImpact()); | |
1171 | mcsFactor = fChamberThicknessInX0 * mcsFactor * mcsFactor; | |
1172 | // first and second chambers(0..) in the end station | |
1173 | ch1 = 2 * endStation; | |
1174 | ch2 = ch1 + 1; | |
1175 | // number of candidates to 0 | |
1176 | nbCan1Seg1Hit = 0; | |
1177 | // Loop over chambers of the end station | |
1178 | for (ch = ch2; ch >= ch1; ch--) { | |
1179 | // linear extrapolation to chamber | |
1180 | extrapHitForRec = | |
1181 | BegSegment->CreateHitForRecFromLinearExtrapToChamber(ch, mcsFactor); | |
1182 | // limits for the hit index in the loop | |
1183 | iHitMin = fIndexOfFirstHitForRecPerChamber[ch]; | |
1184 | iHitMax = iHitMin + fNHitsForRecPerChamber[ch]; | |
1185 | // Loop over HitForRec's in the chamber | |
1186 | for (iHit = iHitMin; iHit < iHitMax; iHit++) { | |
1187 | // pointer to HitForRec | |
1188 | hit = (AliMUONHitForRec*) ((*fHitsForRecPtr)[iHit]); | |
1189 | // test compatibility between current HitForRec and "extrapHitForRec" | |
04b5ea16 | 1190 | // 2 because 2 quantities in chi2 |
a9e2aefa | 1191 | if ((hit-> |
1192 | NormalizedChi2WithHitForRec(extrapHitForRec, | |
1193 | fMaxSigma2Distance)) <= 2.0) { | |
1194 | // both HitForRec's compatible: | |
1195 | // make track candidate from begSegment and current HitForRec | |
1196 | if (fPrintLevel >= 2) | |
1197 | cout << "TrackCandidate with HitForRec " << iHit << | |
1198 | " in Chamber(0..) " << ch << endl; | |
1199 | // flag for beginning segments in one track: | |
1200 | // to be done in track constructor ???? | |
1201 | BegSegment->SetInTrack(kTRUE); | |
1202 | recTrack = new ((*fRecTracksPtr)[fNRecTracks]) | |
1203 | AliMUONTrack(BegSegment, hit, this); | |
1204 | // the right place to eliminate "double counting" ???? how ???? | |
1205 | fNRecTracks++; | |
1206 | if (fPrintLevel >= 10) recTrack->RecursiveDump(); | |
1207 | // increment number of track candidates | |
1208 | nbCan1Seg1Hit++; | |
1209 | } | |
1210 | } // for (iHit = iHitMin;... | |
1211 | delete extrapHitForRec; | |
1212 | } // for (ch = ch2;... | |
1213 | return nbCan1Seg1Hit; | |
1214 | } | |
1215 | ||
1216 | //__________________________________________________________________________ | |
1217 | void AliMUONEventReconstructor::MakeTrackCandidates(void) | |
1218 | { | |
1219 | // To make track candidates | |
1220 | // with at least 3 aligned points in stations(1..) 4 and 5 | |
1221 | // (two Segment's or one Segment and one HitForRec) | |
1222 | Int_t begStation, iBegSegment, nbCan1Seg1Hit, nbCan2Seg; | |
1223 | AliMUONSegment *begSegment; | |
1224 | if (fPrintLevel >= 1) cout << "enter MakeTrackCandidates" << endl; | |
1225 | // Loop over stations(1..) 5 and 4 for the beginning segment | |
1226 | for (begStation = 4; begStation > 2; begStation--) { | |
1227 | // Loop over segments in the beginning station | |
1228 | for (iBegSegment = 0; iBegSegment < fNSegments[begStation]; iBegSegment++) { | |
1229 | // pointer to segment | |
1230 | begSegment = (AliMUONSegment*) ((*fSegmentsPtr[begStation])[iBegSegment]); | |
1231 | if (fPrintLevel >= 2) | |
1232 | cout << "look for TrackCandidate's with Segment " << iBegSegment << | |
1233 | " in Station(0..) " << begStation << endl; | |
1234 | // Look for track candidates with two segments, | |
1235 | // "begSegment" and all compatible segments in other station. | |
1236 | // Only for beginning station(1..) 5 | |
1237 | // because candidates with 2 segments have to looked for only once. | |
1238 | if (begStation == 4) | |
1239 | nbCan2Seg = MakeTrackCandidatesWithTwoSegments(begSegment); | |
956019b6 | 1240 | // Look for track candidates with one segment and one point, |
a9e2aefa | 1241 | // "begSegment" and all compatible HitForRec's in other station. |
1242 | // Only if "begSegment" does not belong already to a track candidate. | |
1243 | // Is that a too strong condition ???? | |
1244 | if (!(begSegment->GetInTrack())) | |
1245 | nbCan1Seg1Hit = MakeTrackCandidatesWithOneSegmentAndOnePoint(begSegment); | |
1246 | } // for (iBegSegment = 0;... | |
1247 | } // for (begStation = 4;... | |
1248 | return; | |
1249 | } | |
1250 | ||
1251 | //__________________________________________________________________________ | |
1252 | void AliMUONEventReconstructor::FollowTracks(void) | |
1253 | { | |
1254 | // Follow tracks in stations(1..) 3, 2 and 1 | |
04b5ea16 | 1255 | // too long: should be made more modular !!!! |
d0bfce8d | 1256 | AliMUONHitForRec *bestHit, *extrapHit, *extrapCorrHit, *hit; |
1257 | AliMUONSegment *bestSegment, *extrapSegment, *extrapCorrSegment, *segment; | |
04b5ea16 | 1258 | AliMUONTrack *track, *nextTrack; |
1259 | AliMUONTrackParam *trackParam1, trackParam[2], trackParamVertex; | |
ecfa008b | 1260 | // -1 to avoid compilation warnings |
1261 | Int_t ch = -1, chInStation, chBestHit = -1, iHit, iSegment, station, trackIndex; | |
04b5ea16 | 1262 | Double_t bestChi2, chi2, dZ1, dZ2, dZ3, maxSigma2Distance, mcsFactor; |
d0bfce8d | 1263 | Double_t bendingMomentum, chi2Norm = 0.; |
9cbdf048 | 1264 | AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? |
04b5ea16 | 1265 | // local maxSigma2Distance, for easy increase in testing |
1266 | maxSigma2Distance = fMaxSigma2Distance; | |
a9e2aefa | 1267 | if (fPrintLevel >= 2) |
1268 | cout << "enter FollowTracks" << endl; | |
1269 | // Loop over track candidates | |
04b5ea16 | 1270 | track = (AliMUONTrack*) fRecTracksPtr->First(); |
1271 | trackIndex = -1; | |
1272 | while (track) { | |
1273 | // Follow function for each track candidate ???? | |
1274 | trackIndex++; | |
1275 | nextTrack = (AliMUONTrack*) fRecTracksPtr->After(track); // prepare next track | |
a9e2aefa | 1276 | if (fPrintLevel >= 2) |
1277 | cout << "FollowTracks: track candidate(0..): " << trackIndex << endl; | |
956019b6 | 1278 | // Fit track candidate |
1279 | track->SetFitMCS(0); // without multiple Coulomb scattering | |
1280 | track->SetFitNParam(3); // with 3 parameters (X = Y = 0) | |
1281 | track->SetFitStart(0); // from parameters at vertex | |
1282 | track->Fit(); | |
a9e2aefa | 1283 | if (fPrintLevel >= 10) { |
1284 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
956019b6 | 1285 | << " after fit in stations(0..) 3 and 4" << endl; |
a9e2aefa | 1286 | track->RecursiveDump(); |
1287 | } | |
1288 | // Loop over stations(1..) 3, 2 and 1 | |
04b5ea16 | 1289 | // something SPECIAL for stations 2 and 1 for majority 3 coincidence ???? |
1290 | // otherwise: majority coincidence 2 !!!! | |
a9e2aefa | 1291 | for (station = 2; station >= 0; station--) { |
1292 | // Track parameters at first track hit (smallest Z) | |
1293 | trackParam1 = ((AliMUONTrackHit*) | |
1294 | (track->GetTrackHitsPtr()->First()))->GetTrackParam(); | |
1295 | // extrapolation to station | |
1296 | trackParam1->ExtrapToStation(station, trackParam); | |
79e1e601 | 1297 | extrapSegment = new AliMUONSegment(); // empty segment |
d0bfce8d | 1298 | extrapCorrSegment = new AliMUONSegment(); // empty corrected segment |
a9e2aefa | 1299 | // multiple scattering factor corresponding to one chamber |
1300 | // and momentum in bending plane (not total) | |
1301 | mcsFactor = 0.0136 * trackParam1->GetInverseBendingMomentum(); | |
1302 | mcsFactor = fChamberThicknessInX0 * mcsFactor * mcsFactor; | |
1303 | // Z difference from previous station | |
9cbdf048 | 1304 | dZ1 = (&(pMUON->Chamber(2 * station)))->Z() - |
1305 | (&(pMUON->Chamber(2 * station + 2)))->Z(); | |
a9e2aefa | 1306 | // Z difference between the two previous stations |
9cbdf048 | 1307 | dZ2 = (&(pMUON->Chamber(2 * station + 2)))->Z() - |
1308 | (&(pMUON->Chamber(2 * station + 4)))->Z(); | |
04b5ea16 | 1309 | // Z difference between the two chambers in the previous station |
1310 | dZ3 = (&(pMUON->Chamber(2 * station)))->Z() - | |
1311 | (&(pMUON->Chamber(2 * station + 1)))->Z(); | |
1312 | extrapSegment->SetBendingCoorReso2(fBendingResolution * fBendingResolution); | |
1313 | extrapSegment-> | |
1314 | SetNonBendingCoorReso2(fNonBendingResolution * fNonBendingResolution); | |
1315 | extrapSegment->UpdateFromStationTrackParam | |
1316 | (trackParam, mcsFactor, dZ1, dZ2, dZ3, station, | |
1317 | trackParam1->GetInverseBendingMomentum()); | |
d0bfce8d | 1318 | // same thing for corrected segment |
1319 | // better to use copy constructor, after checking that it works properly !!!! | |
1320 | extrapCorrSegment->SetBendingCoorReso2(fBendingResolution * fBendingResolution); | |
1321 | extrapCorrSegment-> | |
1322 | SetNonBendingCoorReso2(fNonBendingResolution * fNonBendingResolution); | |
1323 | extrapCorrSegment->UpdateFromStationTrackParam | |
1324 | (trackParam, mcsFactor, dZ1, dZ2, dZ3, station, | |
1325 | trackParam1->GetInverseBendingMomentum()); | |
a9e2aefa | 1326 | bestChi2 = 5.0; |
1327 | bestSegment = NULL; | |
1328 | if (fPrintLevel >= 10) { | |
1329 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1330 | << " Look for segment in station(0..): " << station << endl; | |
1331 | } | |
1332 | // Loop over segments in station | |
1333 | for (iSegment = 0; iSegment < fNSegments[station]; iSegment++) { | |
1334 | // Look for best compatible Segment in station | |
1335 | // should consider all possibilities ???? | |
1336 | // multiple scattering ???? | |
1337 | // separation in 2 functions: Segment and HitForRec ???? | |
1338 | segment = (AliMUONSegment*) ((*fSegmentsPtr[station])[iSegment]); | |
d0bfce8d | 1339 | // correction of corrected segment (fBendingCoor and fNonBendingCoor) |
1340 | // according to real Z value of "segment" and slopes of "extrapSegment" | |
1341 | extrapCorrSegment-> | |
1342 | SetBendingCoor(extrapSegment->GetBendingCoor() + | |
1343 | extrapSegment->GetBendingSlope() * | |
1344 | (segment->GetHitForRec1()->GetZ() - | |
1345 | (&(pMUON->Chamber(2 * station)))->Z())); | |
1346 | extrapCorrSegment-> | |
1347 | SetNonBendingCoor(extrapSegment->GetNonBendingCoor() + | |
1348 | extrapSegment->GetNonBendingSlope() * | |
1349 | (segment->GetHitForRec1()->GetZ() - | |
1350 | (&(pMUON->Chamber(2 * station)))->Z())); | |
1351 | chi2 = segment-> | |
1352 | NormalizedChi2WithSegment(extrapCorrSegment, maxSigma2Distance); | |
a9e2aefa | 1353 | if (chi2 < bestChi2) { |
1354 | // update best Chi2 and Segment if better found | |
1355 | bestSegment = segment; | |
1356 | bestChi2 = chi2; | |
1357 | } | |
1358 | } | |
1359 | if (bestSegment) { | |
1360 | // best segment found: add it to track candidate | |
1361 | track->AddSegment(bestSegment); | |
1362 | // set track parameters at these two TrakHit's | |
1363 | track->SetTrackParamAtHit(track->GetNTrackHits() - 2, &(trackParam[0])); | |
1364 | track->SetTrackParamAtHit(track->GetNTrackHits() - 1, &(trackParam[1])); | |
1365 | if (fPrintLevel >= 10) { | |
1366 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1367 | << " Added segment in station(0..): " << station << endl; | |
1368 | track->RecursiveDump(); | |
1369 | } | |
1370 | } | |
1371 | else { | |
1372 | // No best segment found: | |
1373 | // Look for best compatible HitForRec in station: | |
1374 | // should consider all possibilities ???? | |
1375 | // multiple scattering ???? do about like for extrapSegment !!!! | |
79e1e601 | 1376 | extrapHit = new AliMUONHitForRec(); // empty hit |
d0bfce8d | 1377 | extrapCorrHit = new AliMUONHitForRec(); // empty corrected hit |
a9e2aefa | 1378 | bestChi2 = 3.0; |
1379 | bestHit = NULL; | |
1380 | if (fPrintLevel >= 10) { | |
1381 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1382 | << " Segment not found, look for hit in station(0..): " << station | |
1383 | << endl; | |
1384 | } | |
1385 | // Loop over chambers of the station | |
d82671a0 | 1386 | for (chInStation = 0; chInStation < 2; chInStation++) { |
a9e2aefa | 1387 | // coordinates of extrapolated hit |
d82671a0 | 1388 | extrapHit-> |
1389 | SetBendingCoor((&(trackParam[chInStation]))->GetBendingCoor()); | |
1390 | extrapHit-> | |
1391 | SetNonBendingCoor((&(trackParam[chInStation]))->GetNonBendingCoor()); | |
a9e2aefa | 1392 | // resolutions from "extrapSegment" |
1393 | extrapHit->SetBendingReso2(extrapSegment->GetBendingCoorReso2()); | |
1394 | extrapHit->SetNonBendingReso2(extrapSegment->GetNonBendingCoorReso2()); | |
d0bfce8d | 1395 | // same things for corrected hit |
1396 | // better to use copy constructor, after checking that it works properly !!!! | |
1397 | extrapCorrHit-> | |
1398 | SetBendingCoor((&(trackParam[chInStation]))->GetBendingCoor()); | |
1399 | extrapCorrHit-> | |
1400 | SetNonBendingCoor((&(trackParam[chInStation]))->GetNonBendingCoor()); | |
1401 | extrapHit->SetBendingReso2(extrapSegment->GetBendingCoorReso2()); | |
1402 | extrapHit->SetNonBendingReso2(extrapSegment->GetNonBendingCoorReso2()); | |
a9e2aefa | 1403 | // Loop over hits in the chamber |
956019b6 | 1404 | ch = 2 * station + chInStation; |
a9e2aefa | 1405 | for (iHit = fIndexOfFirstHitForRecPerChamber[ch]; |
1406 | iHit < fIndexOfFirstHitForRecPerChamber[ch] + | |
1407 | fNHitsForRecPerChamber[ch]; | |
1408 | iHit++) { | |
1409 | hit = (AliMUONHitForRec*) ((*fHitsForRecPtr)[iHit]); | |
d0bfce8d | 1410 | // correction of corrected hit (fBendingCoor and fNonBendingCoor) |
1411 | // according to real Z value of "hit" and slopes of right "trackParam" | |
1412 | extrapCorrHit-> | |
1413 | SetBendingCoor((&(trackParam[chInStation]))->GetBendingCoor() + | |
1414 | (&(trackParam[chInStation]))->GetBendingSlope() * | |
1415 | (hit->GetZ() - | |
1416 | (&(trackParam[chInStation]))->GetZ())); | |
1417 | extrapCorrHit-> | |
1418 | SetNonBendingCoor((&(trackParam[chInStation]))->GetNonBendingCoor() + | |
1419 | (&(trackParam[chInStation]))->GetNonBendingSlope() * | |
1420 | (hit->GetZ() - | |
1421 | (&(trackParam[chInStation]))->GetZ())); | |
a9e2aefa | 1422 | // condition for hit not already in segment ???? |
1423 | chi2 = hit->NormalizedChi2WithHitForRec(extrapHit, maxSigma2Distance); | |
1424 | if (chi2 < bestChi2) { | |
1425 | // update best Chi2 and HitForRec if better found | |
1426 | bestHit = hit; | |
1427 | bestChi2 = chi2; | |
d82671a0 | 1428 | chBestHit = chInStation; |
a9e2aefa | 1429 | } |
1430 | } | |
1431 | } | |
1432 | if (bestHit) { | |
1433 | // best hit found: add it to track candidate | |
1434 | track->AddHitForRec(bestHit); | |
956019b6 | 1435 | // set track parameters at this TrackHit |
a9e2aefa | 1436 | track->SetTrackParamAtHit(track->GetNTrackHits() - 1, |
1437 | &(trackParam[chBestHit])); | |
1438 | if (fPrintLevel >= 10) { | |
1439 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1440 | << " Added hit in station(0..): " << station << endl; | |
1441 | track->RecursiveDump(); | |
1442 | } | |
1443 | } | |
1444 | else { | |
8429a5e4 | 1445 | // Remove current track candidate |
1446 | // and corresponding TrackHit's, ... | |
1447 | track->Remove(); | |
04b5ea16 | 1448 | delete extrapSegment; |
d0bfce8d | 1449 | delete extrapCorrSegment; |
1450 | delete extrapHit; | |
1451 | delete extrapCorrHit; | |
a9e2aefa | 1452 | break; // stop the search for this candidate: |
1453 | // exit from the loop over station | |
1454 | } | |
d0bfce8d | 1455 | delete extrapHit; |
1456 | delete extrapCorrHit; | |
a9e2aefa | 1457 | } |
04b5ea16 | 1458 | delete extrapSegment; |
d0bfce8d | 1459 | delete extrapCorrSegment; |
a9e2aefa | 1460 | // Sort track hits according to increasing Z |
1461 | track->GetTrackHitsPtr()->Sort(); | |
1462 | // Update track parameters at first track hit (smallest Z) | |
1463 | trackParam1 = ((AliMUONTrackHit*) | |
1464 | (track->GetTrackHitsPtr()->First()))->GetTrackParam(); | |
d0bfce8d | 1465 | bendingMomentum = 0.; |
1466 | if (TMath::Abs(trackParam1->GetInverseBendingMomentum()) > 0.) | |
1467 | bendingMomentum = TMath::Abs(1/(trackParam1->GetInverseBendingMomentum())); | |
1468 | // Track removed if bendingMomentum not in window [min, max] | |
1469 | if ((bendingMomentum < fMinBendingMomentum) || (bendingMomentum > fMaxBendingMomentum)) { | |
1470 | track->Remove(); | |
1471 | break; // stop the search for this candidate: | |
1472 | // exit from the loop over station | |
1473 | } | |
956019b6 | 1474 | // Track fit |
04b5ea16 | 1475 | // with multiple Coulomb scattering if all stations |
1476 | if (station == 0) track->SetFitMCS(1); | |
956019b6 | 1477 | // without multiple Coulomb scattering if not all stations |
04b5ea16 | 1478 | else track->SetFitMCS(0); |
956019b6 | 1479 | track->SetFitNParam(5); // with 5 parameters (momentum and position) |
1480 | track->SetFitStart(1); // from parameters at first hit | |
1481 | track->Fit(); | |
d0bfce8d | 1482 | Double_t numberOfDegFree = (2.0 * track->GetNTrackHits() - 5); |
1483 | if (numberOfDegFree > 0) { | |
1484 | chi2Norm = track->GetFitFMin() / numberOfDegFree; | |
1485 | } else { | |
1486 | chi2Norm = 1.e10; | |
1487 | } | |
1488 | // Track removed if normalized chi2 too high | |
1489 | if (chi2Norm > fMaxChi2) { | |
1490 | track->Remove(); | |
1491 | break; // stop the search for this candidate: | |
1492 | // exit from the loop over station | |
1493 | } | |
a9e2aefa | 1494 | if (fPrintLevel >= 10) { |
1495 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1496 | << " after fit from station(0..): " << station << " to 4" << endl; | |
1497 | track->RecursiveDump(); | |
1498 | } | |
04b5ea16 | 1499 | // Track extrapolation to the vertex through the absorber (Branson) |
956019b6 | 1500 | // after going through the first station |
04b5ea16 | 1501 | if (station == 0) { |
1502 | trackParamVertex = *trackParam1; | |
1503 | (&trackParamVertex)->ExtrapToVertex(); | |
1504 | track->SetTrackParamAtVertex(&trackParamVertex); | |
6ae236ee | 1505 | if (fPrintLevel >= 1) { |
1506 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1507 | << " after extrapolation to vertex" << endl; | |
1508 | track->RecursiveDump(); | |
1509 | } | |
04b5ea16 | 1510 | } |
a9e2aefa | 1511 | } // for (station = 2;... |
04b5ea16 | 1512 | // go really to next track |
1513 | track = nextTrack; | |
1514 | } // while (track) | |
1515 | // Compression of track array (necessary after Remove ????) | |
1516 | fRecTracksPtr->Compress(); | |
1517 | return; | |
1518 | } | |
1519 | ||
1520 | //__________________________________________________________________________ | |
8429a5e4 | 1521 | void AliMUONEventReconstructor::RemoveDoubleTracks(void) |
1522 | { | |
1523 | // To remove double tracks. | |
1524 | // Tracks are considered identical | |
1525 | // if they have at least half of their hits in common. | |
1526 | // Among two identical tracks, one keeps the track with the larger number of hits | |
1527 | // or, if these numbers are equal, the track with the minimum Chi2. | |
1528 | AliMUONTrack *track1, *track2, *trackToRemove; | |
1529 | Bool_t identicalTracks; | |
1530 | Int_t hitsInCommon, nHits1, nHits2; | |
1531 | identicalTracks = kTRUE; | |
1532 | while (identicalTracks) { | |
1533 | identicalTracks = kFALSE; | |
1534 | // Loop over first track of the pair | |
1535 | track1 = (AliMUONTrack*) fRecTracksPtr->First(); | |
1536 | while (track1 && (!identicalTracks)) { | |
1537 | nHits1 = track1->GetNTrackHits(); | |
1538 | // Loop over second track of the pair | |
1539 | track2 = (AliMUONTrack*) fRecTracksPtr->After(track1); | |
1540 | while (track2 && (!identicalTracks)) { | |
1541 | nHits2 = track2->GetNTrackHits(); | |
1542 | // number of hits in common between two tracks | |
1543 | hitsInCommon = track1->HitsInCommon(track2); | |
1544 | // check for identical tracks | |
1545 | if ((4 * hitsInCommon) >= (nHits1 + nHits2)) { | |
1546 | identicalTracks = kTRUE; | |
1547 | // decide which track to remove | |
1548 | if (nHits1 > nHits2) trackToRemove = track2; | |
1549 | else if (nHits1 < nHits2) trackToRemove = track1; | |
1550 | else if ((track1->GetFitFMin()) < (track2->GetFitFMin())) | |
1551 | trackToRemove = track2; | |
1552 | else trackToRemove = track1; | |
1553 | // remove it | |
1554 | trackToRemove->Remove(); | |
1555 | } | |
1556 | track2 = (AliMUONTrack*) fRecTracksPtr->After(track2); | |
1557 | } // track2 | |
1558 | track1 = (AliMUONTrack*) fRecTracksPtr->After(track1); | |
1559 | } // track1 | |
1560 | } | |
1561 | return; | |
1562 | } | |
1563 | ||
d837040f | 1564 | //__________________________________________________________________________ |
1565 | void AliMUONEventReconstructor::UpdateTrackParamAtHit() | |
1566 | { | |
1567 | // Set track parameters after track fitting. Fill fTrackParamAtHit of AliMUONTrack's | |
1568 | AliMUONTrack *track; | |
1569 | AliMUONTrackHit *trackHit; | |
1570 | AliMUONTrackParam *trackParam; | |
1571 | track = (AliMUONTrack*) fRecTracksPtr->First(); | |
1572 | while (track) { | |
1573 | trackHit = (AliMUONTrackHit*) (track->GetTrackHitsPtr())->First(); | |
1574 | while (trackHit) { | |
1575 | trackParam = trackHit->GetTrackParam(); | |
1576 | track->AddTrackParamAtHit(trackParam); | |
1577 | trackHit = (AliMUONTrackHit*) (track->GetTrackHitsPtr())->After(trackHit); | |
1578 | } // trackHit | |
1579 | track = (AliMUONTrack*) fRecTracksPtr->After(track); | |
1580 | } // track | |
1581 | return; | |
1582 | } | |
1583 | ||
8429a5e4 | 1584 | //__________________________________________________________________________ |
04b5ea16 | 1585 | void AliMUONEventReconstructor::EventDump(void) |
1586 | { | |
1587 | // Dump reconstructed event (track parameters at vertex and at first hit), | |
1588 | // and the particle parameters | |
1589 | ||
1590 | AliMUONTrack *track; | |
1591 | AliMUONTrackParam *trackParam, *trackParam1; | |
04b5ea16 | 1592 | Double_t bendingSlope, nonBendingSlope, pYZ; |
1593 | Double_t pX, pY, pZ, x, y, z, c; | |
1594 | Int_t np, trackIndex, nTrackHits; | |
1595 | ||
1596 | if (fPrintLevel >= 1) cout << "****** enter EventDump ******" << endl; | |
1597 | if (fPrintLevel >= 1) { | |
1598 | cout << " Number of Reconstructed tracks :" << fNRecTracks << endl; | |
1599 | } | |
1600 | fRecTracksPtr->Compress(); // for simple loop without "Next" since no hole | |
1601 | // Loop over reconstructed tracks | |
1602 | for (trackIndex = 0; trackIndex < fNRecTracks; trackIndex++) { | |
83dbc640 | 1603 | if (fTrackMethod != 1) continue; //AZ - skip the rest for now |
04b5ea16 | 1604 | if (fPrintLevel >= 1) |
1605 | cout << " track number: " << trackIndex << endl; | |
1606 | // function for each track for modularity ???? | |
1607 | track = (AliMUONTrack*) ((*fRecTracksPtr)[trackIndex]); | |
1608 | nTrackHits = track->GetNTrackHits(); | |
1609 | if (fPrintLevel >= 1) | |
1610 | cout << " number of track hits: " << nTrackHits << endl; | |
1611 | // track parameters at Vertex | |
1612 | trackParam = track->GetTrackParamAtVertex(); | |
1613 | x = trackParam->GetNonBendingCoor(); | |
1614 | y = trackParam->GetBendingCoor(); | |
1615 | z = trackParam->GetZ(); | |
1616 | bendingSlope = trackParam->GetBendingSlope(); | |
1617 | nonBendingSlope = trackParam->GetNonBendingSlope(); | |
1618 | pYZ = 1/TMath::Abs(trackParam->GetInverseBendingMomentum()); | |
1619 | pZ = pYZ/TMath::Sqrt(1+bendingSlope*bendingSlope); | |
1620 | pX = pZ * nonBendingSlope; | |
1621 | pY = pZ * bendingSlope; | |
1622 | c = TMath::Sign(1.0, trackParam->GetInverseBendingMomentum()); | |
1623 | if (fPrintLevel >= 1) | |
1624 | printf(" track parameters at Vertex z= %f: X= %f Y= %f pX= %f pY= %f pZ= %f c= %f\n", | |
1625 | z, x, y, pX, pY, pZ, c); | |
1626 | ||
1627 | // track parameters at first hit | |
1628 | trackParam1 = ((AliMUONTrackHit*) | |
1629 | (track->GetTrackHitsPtr()->First()))->GetTrackParam(); | |
1630 | x = trackParam1->GetNonBendingCoor(); | |
1631 | y = trackParam1->GetBendingCoor(); | |
1632 | z = trackParam1->GetZ(); | |
1633 | bendingSlope = trackParam1->GetBendingSlope(); | |
1634 | nonBendingSlope = trackParam1->GetNonBendingSlope(); | |
1635 | pYZ = 1/TMath::Abs(trackParam1->GetInverseBendingMomentum()); | |
1636 | pZ = pYZ/TMath::Sqrt(1.0 + bendingSlope * bendingSlope); | |
1637 | pX = pZ * nonBendingSlope; | |
1638 | pY = pZ * bendingSlope; | |
1639 | c = TMath::Sign(1.0, trackParam1->GetInverseBendingMomentum()); | |
1640 | if (fPrintLevel >= 1) | |
1641 | printf(" track parameters at z= %f: X= %f Y= %f pX= %f pY= %f pZ= %f c= %f\n", | |
1642 | z, x, y, pX, pY, pZ, c); | |
1643 | } | |
1644 | // informations about generated particles | |
5d12ce38 | 1645 | np = gAlice->GetMCApp()->GetNtrack(); |
04b5ea16 | 1646 | printf(" **** number of generated particles: %d \n", np); |
1647 | ||
88cb7938 | 1648 | // for (Int_t iPart = 0; iPart < np; iPart++) { |
1649 | // p = gAlice->Particle(iPart); | |
1650 | // printf(" particle %d: type= %d px= %f py= %f pz= %f pdg= %d\n", | |
1651 | // iPart, p->GetPdgCode(), p->Px(), p->Py(), p->Pz(), p->GetPdgCode()); | |
1652 | // } | |
a9e2aefa | 1653 | return; |
1654 | } | |
1655 | ||
276c44b7 | 1656 | |
1657 | //__________________________________________________________________________ | |
1658 | void AliMUONEventReconstructor::EventDumpTrigger(void) | |
1659 | { | |
1660 | // Dump reconstructed trigger event | |
1661 | // and the particle parameters | |
1662 | ||
52c9bc11 | 1663 | AliMUONTriggerTrack *triggertrack ; |
1664 | Int_t nTriggerTracks = fMUONData->RecTriggerTracks()->GetEntriesFast(); | |
276c44b7 | 1665 | |
276c44b7 | 1666 | if (fPrintLevel >= 1) { |
52c9bc11 | 1667 | cout << "****** enter EventDumpTrigger ******" << endl; |
1668 | cout << " Number of Reconstructed tracks :" << nTriggerTracks << endl; | |
276c44b7 | 1669 | } |
1670 | // Loop over reconstructed tracks | |
52c9bc11 | 1671 | for (Int_t trackIndex = 0; trackIndex < nTriggerTracks; trackIndex++) { |
1672 | triggertrack = (AliMUONTriggerTrack*)fMUONData->RecTriggerTracks()->At(trackIndex); | |
276c44b7 | 1673 | printf(" trigger track number %i x11=%f y11=%f thetax=%f thetay=%f \n", |
1674 | trackIndex, | |
1675 | triggertrack->GetX11(),triggertrack->GetY11(), | |
1676 | triggertrack->GetThetax(),triggertrack->GetThetay()); | |
1677 | } | |
1678 | } | |
1679 | ||
1680 | //__________________________________________________________________________ | |
c7ba256d | 1681 | void AliMUONEventReconstructor::FillEvent() |
1682 | { | |
1683 | // Create a new AliMUONRecoEvent, fill its track list, then add it as a | |
1684 | // leaf in the Event branch of TreeRecoEvent tree | |
1685 | cout << "Enter FillEvent() ...\n"; | |
1686 | ||
1687 | if (!fRecoEvent) { | |
1688 | fRecoEvent = new AliMUONRecoEvent(); | |
1689 | } else { | |
1690 | fRecoEvent->Clear(); | |
1691 | } | |
1692 | //save current directory | |
1693 | TDirectory *current = gDirectory; | |
1694 | if (!fTreeFile) fTreeFile = new TFile("tree_reco.root", "RECREATE"); | |
1695 | if (!fEventTree) fEventTree = new TTree("TreeRecoEvent", "MUON reconstructed events"); | |
83dbc640 | 1696 | //AZif (fRecoEvent->MakeDumpTracks(fRecTracksPtr)) { |
1697 | if (fRecoEvent->MakeDumpTracks(fMuons, fRecTracksPtr, this)) { //AZ | |
c7ba256d | 1698 | if (fPrintLevel > 1) fRecoEvent->EventInfo(); |
1699 | TBranch *branch = fEventTree->GetBranch("Event"); | |
d0f40f23 | 1700 | if (!branch) branch = fEventTree->Branch("Event", "AliMUONRecoEvent", &fRecoEvent, 64000); |
c7ba256d | 1701 | branch->SetAutoDelete(); |
1702 | fTreeFile->cd(); | |
1703 | fEventTree->Fill(); | |
1704 | fTreeFile->Write(); | |
1705 | } | |
1706 | // restore directory | |
1707 | current->cd(); | |
1708 | } | |
83dbc640 | 1709 | |
1710 | //__________________________________________________________________________ | |
1711 | void AliMUONEventReconstructor::MakeTrackCandidatesK(void) | |
1712 | { | |
1713 | // To make initial tracks for Kalman filter from the list of segments | |
1714 | Int_t istat, iseg; | |
1715 | AliMUONSegment *segment; | |
1716 | AliMUONTrackK *trackK; | |
1717 | ||
1718 | if (fPrintLevel >= 1) cout << "enter MakeTrackCandidatesK" << endl; | |
1719 | // Reset the TClonesArray of reconstructed tracks | |
1720 | if (fRecTracksPtr) fRecTracksPtr->Delete(); | |
1721 | // Delete in order that the Track destructors are called, | |
1722 | // hence the space for the TClonesArray of pointers to TrackHit's is freed | |
1723 | fNRecTracks = 0; | |
1724 | ||
1725 | AliMUONTrackK a(this, fHitsForRecPtr); // bad idea ??? | |
1726 | // Loop over stations(1...) 5 and 4 | |
1727 | for (istat=4; istat>=3; istat--) { | |
1728 | // Loop over segments in the station | |
1729 | for (iseg=0; iseg<fNSegments[istat]; iseg++) { | |
1730 | // Transform segments to tracks and evaluate covariance matrix | |
1731 | segment = (AliMUONSegment*) ((*fSegmentsPtr[istat])[iseg]); | |
1732 | trackK = new ((*fRecTracksPtr)[fNRecTracks]) AliMUONTrackK(segment); | |
1733 | fNRecTracks++; | |
1734 | } // for (iseg=0;...) | |
1735 | } // for (istat=4;...) | |
1736 | return; | |
1737 | } | |
1738 | ||
1739 | //__________________________________________________________________________ | |
1740 | void AliMUONEventReconstructor::FollowTracksK(void) | |
1741 | { | |
1742 | // Follow tracks using Kalman filter | |
30178c30 | 1743 | Bool_t ok; |
83dbc640 | 1744 | Int_t icand, ichamBeg, ichamEnd, chamBits; |
1745 | Double_t zDipole1, zDipole2; | |
1746 | AliMUONTrackK *trackK; | |
1747 | AliMUONHitForRec *hit; | |
1748 | AliMUONRawCluster *clus; | |
1749 | TClonesArray *rawclusters; | |
1750 | AliMUON *pMUON; | |
1751 | clus = 0; rawclusters = 0; | |
1752 | ||
1753 | zDipole1 = GetSimpleBPosition() - GetSimpleBLength()/2; | |
1754 | zDipole2 = zDipole1 + GetSimpleBLength(); | |
1755 | ||
1756 | // Print hits | |
1757 | pMUON = (AliMUON*) gAlice->GetModule("MUON"); | |
1758 | for (Int_t i1=0; i1<fNHitsForRec; i1++) { | |
1759 | hit = (AliMUONHitForRec*) ((*fHitsForRecPtr)[i1]); | |
1760 | //if (hit->GetTHTrack() > 1 || hit->GetGeantSignal() == 0) continue; | |
1761 | /* | |
1762 | cout << " Hit #" << hit->GetChamberNumber() << " "; | |
1763 | cout << hit->GetBendingCoor() << " "; | |
1764 | cout << hit->GetNonBendingCoor() << " "; | |
1765 | cout << hit->GetZ() << " "; | |
1766 | cout << hit->GetGeantSignal() << " "; | |
1767 | cout << hit->GetTHTrack() << endl; | |
1768 | */ | |
1769 | /* | |
1770 | printf(" Hit # %d %10.4f %10.4f %10.4f", | |
1771 | hit->GetChamberNumber(), hit->GetBendingCoor(), | |
1772 | hit->GetNonBendingCoor(), hit->GetZ()); | |
1773 | if (fRecGeantHits) { | |
1774 | // from GEANT hits | |
1775 | printf(" %3d %3d \n", hit->GetGeantSignal(), hit->GetTHTrack()); | |
1776 | } else { | |
1777 | // from raw clusters | |
1778 | rawclusters = pMUON->RawClustAddress(hit->GetChamberNumber()); | |
1779 | clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(hit-> | |
1780 | GetHitNumber()); | |
1781 | printf("%3d", clus->fTracks[1]-1); | |
1782 | if (clus->fTracks[2] != 0) printf("%3d \n", clus->fTracks[2]-1); | |
1783 | else printf("\n"); | |
1784 | } | |
1785 | */ | |
1786 | } | |
1787 | ||
1788 | icand = -1; | |
1789 | Int_t nSeeds = fNRecTracks; // starting number of seeds | |
1790 | // Loop over track candidates | |
1791 | while (icand < fNRecTracks-1) { | |
1792 | icand ++; | |
1793 | trackK = (AliMUONTrackK*) ((*fRecTracksPtr)[icand]); | |
1794 | ||
1795 | // Discard candidate which will produce the double track | |
1796 | if (icand > 0) { | |
30178c30 | 1797 | ok = CheckCandidateK(icand,nSeeds); |
1798 | if (!ok) { | |
83dbc640 | 1799 | //trackK->SetRecover(-1); // mark candidate to be removed |
1800 | //continue; | |
1801 | } | |
1802 | } | |
1803 | ||
30178c30 | 1804 | ok = kTRUE; |
83dbc640 | 1805 | if (trackK->GetRecover() == 0) hit = (AliMUONHitForRec*) |
1806 | trackK->GetHitOnTrack()->Last(); // last hit | |
1807 | else hit = (AliMUONHitForRec*) (*trackK->GetHitOnTrack())[1]; // 2'nd hit | |
1808 | ichamBeg = hit->GetChamberNumber(); | |
1809 | ichamEnd = 0; | |
1810 | // Check propagation direction | |
1811 | if (trackK->GetTrackDir() > 0) { | |
1812 | ichamEnd = 9; // forward propagation | |
30178c30 | 1813 | ok = trackK->KalmanFilter(ichamBeg,ichamEnd,kFALSE,zDipole1,zDipole2); |
1814 | if (ok) { | |
83dbc640 | 1815 | ichamBeg = ichamEnd; |
1816 | ichamEnd = 6; // backward propagation | |
1817 | // Change weight matrix and zero fChi2 for backpropagation | |
1818 | trackK->StartBack(); | |
30178c30 | 1819 | ok = trackK->KalmanFilter(ichamBeg,ichamEnd,kTRUE,zDipole1,zDipole2); |
83dbc640 | 1820 | ichamBeg = ichamEnd; |
1821 | ichamEnd = 0; | |
1822 | } | |
1823 | } else { | |
1824 | if (trackK->GetBPFlag()) { | |
1825 | // backpropagation | |
1826 | ichamEnd = 6; // backward propagation | |
1827 | // Change weight matrix and zero fChi2 for backpropagation | |
1828 | trackK->StartBack(); | |
30178c30 | 1829 | ok = trackK->KalmanFilter(ichamBeg,ichamEnd,kTRUE,zDipole1,zDipole2); |
83dbc640 | 1830 | ichamBeg = ichamEnd; |
1831 | ichamEnd = 0; | |
1832 | } | |
1833 | } | |
1834 | ||
30178c30 | 1835 | if (ok) { |
83dbc640 | 1836 | trackK->SetTrackDir(-1); |
1837 | trackK->SetBPFlag(kFALSE); | |
30178c30 | 1838 | ok = trackK->KalmanFilter(ichamBeg,ichamEnd,kFALSE,zDipole1,zDipole2); |
83dbc640 | 1839 | } |
30178c30 | 1840 | if (ok) trackK->SetTrackQuality(0); // compute "track quality" |
83dbc640 | 1841 | else trackK->SetRecover(-1); // mark candidate to be removed |
1842 | ||
1843 | // Majority 3 of 4 in first 2 stations | |
1844 | chamBits = 0; | |
1845 | for (Int_t i=0; i<trackK->GetNTrackHits(); i++) { | |
1846 | hit = (AliMUONHitForRec*) (*trackK->GetHitOnTrack())[i]; | |
1847 | chamBits |= BIT(hit->GetChamberNumber()-1); | |
1848 | } | |
1849 | //if (!((chamBits&3)==3 || (chamBits>>2&3)==3)) trackK->SetRecover(-1); | |
1850 | //mark candidate to be removed | |
1851 | } // while | |
1852 | ||
1853 | for (Int_t i=0; i<fNRecTracks; i++) { | |
1854 | trackK = (AliMUONTrackK*) ((*fRecTracksPtr)[i]); | |
1855 | if (trackK->GetRecover() < 0) fRecTracksPtr->RemoveAt(i); | |
1856 | } | |
1857 | ||
1858 | // Compress TClonesArray | |
1859 | fRecTracksPtr->Compress(); | |
1860 | fNRecTracks = fRecTracksPtr->GetEntriesFast(); | |
1861 | return; | |
1862 | } | |
1863 | ||
1864 | //__________________________________________________________________________ | |
30178c30 | 1865 | Bool_t AliMUONEventReconstructor::CheckCandidateK(Int_t icand, Int_t nSeeds) const |
83dbc640 | 1866 | { |
1867 | // Discards track candidate if it will produce the double track (having | |
1868 | // the same seed segment hits as hits of a good track found before) | |
1869 | AliMUONTrackK *track1, *track2; | |
1870 | AliMUONHitForRec *hit1, *hit2, *hit; | |
1871 | ||
1872 | track1 = (AliMUONTrackK*) ((*fRecTracksPtr)[icand]); | |
1873 | hit1 = (AliMUONHitForRec*) (*track1->GetHitOnTrack())[0]; // 1'st hit | |
1874 | hit2 = (AliMUONHitForRec*) (*track1->GetHitOnTrack())[1]; // 2'nd hit | |
1875 | ||
1876 | for (Int_t i=0; i<icand; i++) { | |
1877 | track2 = (AliMUONTrackK*) ((*fRecTracksPtr)[i]); | |
1878 | //if (track2->GetRecover() < 0) continue; | |
1879 | if (track2->GetRecover() < 0 && icand >= nSeeds) continue; | |
1880 | ||
1881 | if (track1->GetStartSegment() == track2->GetStartSegment()) { | |
1882 | return kFALSE; | |
1883 | } else { | |
1884 | Int_t nSame = 0; | |
1885 | for (Int_t j=0; j<track2->GetNTrackHits(); j++) { | |
1886 | hit = (AliMUONHitForRec*) (*track2->GetHitOnTrack())[j]; | |
1887 | if (hit == hit1 || hit == hit2) { | |
1888 | nSame++; | |
1889 | if (nSame == 2) return kFALSE; | |
1890 | } | |
1891 | } // for (Int_t j=0; | |
1892 | } | |
1893 | } // for (Int_t i=0; | |
1894 | return kTRUE; | |
1895 | } | |
1896 | ||
1897 | //__________________________________________________________________________ | |
1898 | void AliMUONEventReconstructor::RemoveDoubleTracksK(void) | |
1899 | { | |
1900 | // Removes double tracks (sharing more than half of their hits). Keeps | |
1901 | // the track with higher quality | |
1902 | AliMUONTrackK *track1, *track2, *trackToKill; | |
1903 | ||
1904 | // Sort tracks according to their quality | |
1905 | fRecTracksPtr->Sort(); | |
1906 | ||
1907 | // Loop over first track of the pair | |
1908 | track1 = (AliMUONTrackK*) fRecTracksPtr->First(); | |
1909 | while (track1) { | |
1910 | // Loop over second track of the pair | |
1911 | track2 = (AliMUONTrackK*) fRecTracksPtr->After(track1); | |
1912 | while (track2) { | |
1913 | // Check whether or not to keep track2 | |
1914 | if (!track2->KeepTrack(track1)) { | |
1915 | cout << " Killed track: " << 1/(*track2->GetTrackParameters())(4,0) << | |
1916 | " " << track2->GetTrackQuality() << endl; | |
1917 | trackToKill = track2; | |
1918 | track2 = (AliMUONTrackK*) fRecTracksPtr->After(track2); | |
1919 | trackToKill->Kill(); | |
1920 | fRecTracksPtr->Compress(); | |
1921 | } else track2 = (AliMUONTrackK*) fRecTracksPtr->After(track2); | |
1922 | } // track2 | |
1923 | track1 = (AliMUONTrackK*) fRecTracksPtr->After(track1); | |
1924 | } // track1 | |
1925 | ||
1926 | fNRecTracks = fRecTracksPtr->GetEntriesFast(); | |
1927 | cout << " Number of Kalman tracks: " << fNRecTracks << endl; | |
1928 | } | |
1929 | ||
1930 | //__________________________________________________________________________ | |
1931 | void AliMUONEventReconstructor::GoToVertex(void) | |
1932 | { | |
1933 | // Propagates track to the vertex thru absorber | |
1934 | // (using Branson correction for now) | |
1935 | ||
1936 | Double_t zVertex; | |
1937 | zVertex = 0; | |
1938 | for (Int_t i=0; i<fNRecTracks; i++) { | |
1939 | //((AliMUONTrackK*)(*fRecTracksPtr)[i])->Branson(); | |
1940 | //((AliMUONTrackK*)(*fRecTracksPtr)[i])->GoToZ(zVertex); // w/out absorber | |
1941 | ((AliMUONTrackK*)(*fRecTracksPtr)[i])->SetTrackQuality(1); // compute Chi2 | |
1942 | ((AliMUONTrackK*)(*fRecTracksPtr)[i])->GoToVertex(); // with absorber | |
1943 | } | |
1944 | } |