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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 | |
70479d0e | 35 | #include <Riostream.h> // for cout |
82a4bc7b | 36 | #include <stdlib.h> // for exit() |
a9e2aefa | 37 | |
94de3818 | 38 | #include <TTree.h> |
a9e2aefa | 39 | |
a9e2aefa | 40 | #include "AliMUON.h" |
52c9bc11 | 41 | //#include "AliMUONChamber.h" |
3831f268 | 42 | #include "AliMUONEventReconstructor.h" |
a9e2aefa | 43 | #include "AliMUONHitForRec.h" |
276c44b7 | 44 | #include "AliMUONTriggerTrack.h" |
45 | //#include "AliMUONTriggerConstants.h" | |
46 | #include "AliMUONTriggerCircuit.h" | |
a9e2aefa | 47 | #include "AliMUONRawCluster.h" |
276c44b7 | 48 | #include "AliMUONLocalTrigger.h" |
52c9bc11 | 49 | #include "AliMUONGlobalTrigger.h" |
3831f268 | 50 | #include "AliMUONRecoEvent.h" |
51 | #include "AliMUONSegment.h" | |
a9e2aefa | 52 | #include "AliMUONTrack.h" |
a9e2aefa | 53 | #include "AliMUONTrackHit.h" |
94de3818 | 54 | #include "AliMagF.h" |
3831f268 | 55 | #include "AliRun.h" // for gAlice |
88cb7938 | 56 | #include "AliConfig.h" |
57 | #include "AliRunLoader.h" | |
58 | #include "AliLoader.h" | |
83dbc640 | 59 | #include "AliMUONTrackK.h" //AZ |
60 | #include <TMatrixD.h> //AZ | |
5d12ce38 | 61 | #include "AliMC.h" |
a9e2aefa | 62 | |
a9e2aefa | 63 | //************* Defaults parameters for reconstruction |
9cbdf048 | 64 | static const Double_t kDefaultMinBendingMomentum = 3.0; |
d0bfce8d | 65 | static const Double_t kDefaultMaxBendingMomentum = 500.0; |
66 | static const Double_t kDefaultMaxChi2 = 100.0; | |
9cbdf048 | 67 | static const Double_t kDefaultMaxSigma2Distance = 16.0; |
68 | static const Double_t kDefaultBendingResolution = 0.01; | |
69 | static const Double_t kDefaultNonBendingResolution = 0.144; | |
70 | static const Double_t kDefaultChamberThicknessInX0 = 0.03; | |
a9e2aefa | 71 | // Simple magnetic field: |
72 | // Value taken from macro MUONtracking.C: 0.7 T, hence 7 kG | |
73 | // Length and Position from reco_muon.F, with opposite sign: | |
74 | // Length = ZMAGEND-ZCOIL | |
75 | // Position = (ZMAGEND+ZCOIL)/2 | |
76 | // to be ajusted differently from real magnetic field ???? | |
9cbdf048 | 77 | static const Double_t kDefaultSimpleBValue = 7.0; |
78 | static const Double_t kDefaultSimpleBLength = 428.0; | |
79 | static const Double_t kDefaultSimpleBPosition = 1019.0; | |
80 | static const Int_t kDefaultRecGeantHits = 0; | |
81 | static const Double_t kDefaultEfficiency = 0.95; | |
a9e2aefa | 82 | |
70b6e084 | 83 | static const Int_t kDefaultPrintLevel = -1; |
a9e2aefa | 84 | |
85 | ClassImp(AliMUONEventReconstructor) // Class implementation in ROOT context | |
86 | ||
87 | //__________________________________________________________________________ | |
52c9bc11 | 88 | AliMUONEventReconstructor::AliMUONEventReconstructor(AliLoader* loader) |
a9e2aefa | 89 | { |
90 | // Constructor for class AliMUONEventReconstructor | |
91 | SetReconstructionParametersToDefaults(); | |
83dbc640 | 92 | fTrackMethod = 1; //AZ - tracking method (1-default, 2-Kalman) |
a9e2aefa | 93 | // Memory allocation for the TClonesArray of hits for reconstruction |
94 | // Is 10000 the right size ???? | |
95 | fHitsForRecPtr = new TClonesArray("AliMUONHitForRec", 10000); | |
96 | fNHitsForRec = 0; // really needed or GetEntriesFast sufficient ???? | |
97 | // Memory allocation for the TClonesArray's of segments in stations | |
98 | // Is 2000 the right size ???? | |
9cbdf048 | 99 | for (Int_t st = 0; st < kMaxMuonTrackingStations; st++) { |
a9e2aefa | 100 | fSegmentsPtr[st] = new TClonesArray("AliMUONSegment", 2000); |
101 | fNSegments[st] = 0; // really needed or GetEntriesFast sufficient ???? | |
102 | } | |
103 | // Memory allocation for the TClonesArray of reconstructed tracks | |
104 | // Is 10 the right size ???? | |
105 | fRecTracksPtr = new TClonesArray("AliMUONTrack", 10); | |
106 | fNRecTracks = 0; // really needed or GetEntriesFast sufficient ???? | |
276c44b7 | 107 | // trigger tracks |
108 | fRecTriggerTracksPtr = new TClonesArray("AliMUONTriggerTrack", 10); | |
109 | fNRecTriggerTracks = 0; // really needed or GetEntriesFast sufficient ???? | |
8429a5e4 | 110 | // Memory allocation for the TClonesArray of hits on reconstructed tracks |
111 | // Is 100 the right size ???? | |
112 | fRecTrackHitsPtr = new TClonesArray("AliMUONTrack", 100); | |
113 | fNRecTrackHits = 0; // really needed or GetEntriesFast sufficient ???? | |
a9e2aefa | 114 | |
5b64e914 | 115 | // Sign of fSimpleBValue according to sign of Bx value at (50,50,-950). |
a6f03ddb | 116 | Float_t b[3], x[3]; |
5b64e914 | 117 | x[0] = 50.; x[1] = 50.; x[2] = -950.; |
a6f03ddb | 118 | gAlice->Field()->Field(x, b); |
065bd0e1 | 119 | fSimpleBValue = TMath::Sign(fSimpleBValue,(Double_t) b[0]); |
5b64e914 | 120 | fSimpleBPosition = TMath::Sign(fSimpleBPosition,(Double_t) x[2]); |
a6f03ddb | 121 | // See how to get fSimple(BValue, BLength, BPosition) |
122 | // automatically calculated from the actual magnetic field ???? | |
a9e2aefa | 123 | |
124 | if (fPrintLevel >= 0) { | |
a6f03ddb | 125 | cout << "AliMUONEventReconstructor constructed with defaults" << endl; Dump(); |
126 | cout << endl << "Magnetic field from root file:" << endl; | |
127 | gAlice->Field()->Dump(); | |
128 | cout << endl; | |
129 | } | |
c7ba256d | 130 | |
47a6b602 | 131 | // Initializions for GEANT background events |
132 | fBkgGeantFile = 0; | |
133 | fBkgGeantTK = 0; | |
134 | fBkgGeantParticles = 0; | |
135 | fBkgGeantTH = 0; | |
136 | fBkgGeantHits = 0; | |
137 | fBkgGeantEventNumber = -1; | |
138 | ||
c7ba256d | 139 | // Initialize to 0 pointers to RecoEvent, tree and tree file |
140 | fRecoEvent = 0; | |
141 | fEventTree = 0; | |
142 | fTreeFile = 0; | |
52c9bc11 | 143 | |
144 | // initialize loader's | |
145 | fLoader = loader; | |
146 | ||
147 | // initialize container | |
148 | fMUONData = new AliMUONData(fLoader,"MUON","MUON"); | |
149 | ||
150 | // Loading AliRun master | |
151 | AliRunLoader* runloader = fLoader->GetRunLoader(); | |
152 | if (runloader->GetAliRun() == 0x0) runloader->LoadgAlice(); | |
153 | gAlice = runloader->GetAliRun(); | |
154 | ||
a9e2aefa | 155 | return; |
156 | } | |
52c9bc11 | 157 | //__________________________________________________________________________ |
d9a3473d | 158 | AliMUONEventReconstructor::AliMUONEventReconstructor (const AliMUONEventReconstructor& Reconstructor):TObject(Reconstructor) |
9cbdf048 | 159 | { |
160 | // Dummy copy constructor | |
161 | } | |
162 | ||
d9a3473d | 163 | AliMUONEventReconstructor & AliMUONEventReconstructor::operator=(const AliMUONEventReconstructor& /*Reconstructor*/) |
9cbdf048 | 164 | { |
165 | // Dummy assignment operator | |
166 | return *this; | |
167 | } | |
168 | ||
a9e2aefa | 169 | //__________________________________________________________________________ |
170 | AliMUONEventReconstructor::~AliMUONEventReconstructor(void) | |
171 | { | |
172 | // Destructor for class AliMUONEventReconstructor | |
c7ba256d | 173 | if (fTreeFile) { |
174 | fTreeFile->Close(); | |
175 | delete fTreeFile; | |
176 | } | |
177 | // if (fEventTree) delete fEventTree; | |
178 | if (fRecoEvent) delete fRecoEvent; | |
a9e2aefa | 179 | delete fHitsForRecPtr; // Correct destruction of everything ???? or delete [] ???? |
9cbdf048 | 180 | for (Int_t st = 0; st < kMaxMuonTrackingStations; st++) |
a9e2aefa | 181 | delete fSegmentsPtr[st]; // Correct destruction of everything ???? |
182 | return; | |
183 | } | |
184 | ||
185 | //__________________________________________________________________________ | |
186 | void AliMUONEventReconstructor::SetReconstructionParametersToDefaults(void) | |
187 | { | |
188 | // Set reconstruction parameters to default values | |
189 | // Would be much more convenient with a structure (or class) ???? | |
9cbdf048 | 190 | fMinBendingMomentum = kDefaultMinBendingMomentum; |
d0bfce8d | 191 | fMaxBendingMomentum = kDefaultMaxBendingMomentum; |
192 | fMaxChi2 = kDefaultMaxChi2; | |
9cbdf048 | 193 | fMaxSigma2Distance = kDefaultMaxSigma2Distance; |
a9e2aefa | 194 | |
9cbdf048 | 195 | AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON"); |
a9e2aefa | 196 | // ******** Parameters for making HitsForRec |
197 | // minimum radius, | |
198 | // like in TRACKF_STAT: | |
199 | // 2 degrees for stations 1 and 2, or ch(0...) from 0 to 3; | |
200 | // 30 cm for stations 3 to 5, or ch(0...) from 4 to 9 | |
9cbdf048 | 201 | for (Int_t ch = 0; ch < kMaxMuonTrackingChambers; ch++) { |
202 | if (ch < 4) fRMin[ch] = TMath::Abs((&(pMUON->Chamber(ch)))->Z()) * | |
a9e2aefa | 203 | 2.0 * TMath::Pi() / 180.0; |
204 | else fRMin[ch] = 30.0; | |
d0bfce8d | 205 | // maximum radius at 10 degrees and Z of chamber |
206 | fRMax[ch] = TMath::Abs((&(pMUON->Chamber(ch)))->Z()) * | |
207 | 10.0 * TMath::Pi() / 180.0; | |
a9e2aefa | 208 | } |
a9e2aefa | 209 | |
210 | // ******** Parameters for making segments | |
211 | // should be parametrized ???? | |
212 | // according to interval between chambers in a station ???? | |
213 | // Maximum distance in non bending plane | |
214 | // 5 * 0.22 just to remember the way it was made in TRACKF_STAT | |
215 | // SIGCUT*DYMAX(IZ) | |
9cbdf048 | 216 | for (Int_t st = 0; st < kMaxMuonTrackingStations; st++) |
a9e2aefa | 217 | fSegmentMaxDistNonBending[st] = 5. * 0.22; |
860cef81 | 218 | // Maximum distance in bending plane: |
219 | // values from TRACKF_STAT, corresponding to (J psi 20cm), | |
220 | // scaled to the real distance between chambers in a station | |
ef21c79e | 221 | fSegmentMaxDistBending[0] = TMath::Abs( 1.5 * |
222 | ((&(pMUON->Chamber(1)))->Z() - (&(pMUON->Chamber(0)))->Z()) / 20.0); | |
223 | fSegmentMaxDistBending[1] = TMath::Abs( 1.5 * | |
224 | ((&(pMUON->Chamber(3)))->Z() - (&(pMUON->Chamber(2)))->Z()) / 20.0); | |
225 | fSegmentMaxDistBending[2] = TMath::Abs( 3.0 * | |
226 | ((&(pMUON->Chamber(5)))->Z() - (&(pMUON->Chamber(4)))->Z()) / 20.0); | |
227 | fSegmentMaxDistBending[3] = TMath::Abs( 6.0 * | |
228 | ((&(pMUON->Chamber(7)))->Z() - (&(pMUON->Chamber(6)))->Z()) / 20.0); | |
229 | fSegmentMaxDistBending[4] = TMath::Abs( 6.0 * | |
230 | ((&(pMUON->Chamber(9)))->Z() - (&(pMUON->Chamber(8)))->Z()) / 20.0); | |
a9e2aefa | 231 | |
9cbdf048 | 232 | fBendingResolution = kDefaultBendingResolution; |
233 | fNonBendingResolution = kDefaultNonBendingResolution; | |
234 | fChamberThicknessInX0 = kDefaultChamberThicknessInX0; | |
235 | fSimpleBValue = kDefaultSimpleBValue; | |
236 | fSimpleBLength = kDefaultSimpleBLength; | |
237 | fSimpleBPosition = kDefaultSimpleBPosition; | |
238 | fRecGeantHits = kDefaultRecGeantHits; | |
239 | fEfficiency = kDefaultEfficiency; | |
240 | fPrintLevel = kDefaultPrintLevel; | |
a9e2aefa | 241 | return; |
242 | } | |
243 | ||
244 | //__________________________________________________________________________ | |
3831f268 | 245 | Double_t AliMUONEventReconstructor::GetImpactParamFromBendingMomentum(Double_t BendingMomentum) const |
a9e2aefa | 246 | { |
247 | // Returns impact parameter at vertex in bending plane (cm), | |
248 | // from the signed bending momentum "BendingMomentum" in bending plane (GeV/c), | |
249 | // using simple values for dipole magnetic field. | |
065bd0e1 | 250 | // The sign of "BendingMomentum" is the sign of the charge. |
a9e2aefa | 251 | return (-0.0003 * fSimpleBValue * fSimpleBLength * fSimpleBPosition / |
252 | BendingMomentum); | |
253 | } | |
254 | ||
255 | //__________________________________________________________________________ | |
3831f268 | 256 | Double_t AliMUONEventReconstructor::GetBendingMomentumFromImpactParam(Double_t ImpactParam) const |
a9e2aefa | 257 | { |
258 | // Returns signed bending momentum in bending plane (GeV/c), | |
065bd0e1 | 259 | // the sign being the sign of the charge for particles moving forward in Z, |
a9e2aefa | 260 | // from the impact parameter "ImpactParam" at vertex in bending plane (cm), |
261 | // using simple values for dipole magnetic field. | |
a9e2aefa | 262 | return (-0.0003 * fSimpleBValue * fSimpleBLength * fSimpleBPosition / |
263 | ImpactParam); | |
264 | } | |
265 | ||
266 | //__________________________________________________________________________ | |
267 | void AliMUONEventReconstructor::SetBkgGeantFile(Text_t *BkgGeantFileName) | |
268 | { | |
269 | // Set background file ... for GEANT hits | |
270 | // Must be called after having loaded the firts signal event | |
271 | if (fPrintLevel >= 0) { | |
272 | cout << "Enter SetBkgGeantFile with BkgGeantFileName ``" | |
273 | << BkgGeantFileName << "''" << endl;} | |
274 | if (strlen(BkgGeantFileName)) { | |
275 | // BkgGeantFileName not empty: try to open the file | |
276 | if (fPrintLevel >= 2) {cout << "Before File(Bkg)" << endl; gDirectory->Dump();} | |
277 | fBkgGeantFile = new TFile(BkgGeantFileName); | |
278 | if (fPrintLevel >= 2) {cout << "After File(Bkg)" << endl; gDirectory->Dump();} | |
279 | if (fBkgGeantFile-> IsOpen()) { | |
280 | if (fPrintLevel >= 0) { | |
281 | cout << "Background for GEANT hits in file: ``" << BkgGeantFileName | |
282 | << "'' successfully opened" << endl;} | |
283 | } | |
284 | else { | |
285 | cout << "Background for GEANT hits in file: " << BkgGeantFileName << endl; | |
286 | cout << "NOT FOUND: EXIT" << endl; | |
287 | exit(0); // right instruction for exit ???? | |
288 | } | |
289 | // Arrays for "particles" and "hits" | |
290 | fBkgGeantParticles = new TClonesArray("TParticle", 200); | |
291 | fBkgGeantHits = new TClonesArray("AliMUONHit", 2000); | |
292 | // Event number to -1 for initialization | |
293 | fBkgGeantEventNumber = -1; | |
294 | // Back to the signal file: | |
295 | // first signal event must have been loaded previously, | |
296 | // otherwise, Segmentation violation at the next instruction | |
297 | // How is it possible to do smething better ???? | |
298 | ((gAlice->TreeK())->GetCurrentFile())->cd(); | |
299 | if (fPrintLevel >= 2) {cout << "After cd(gAlice)" << endl; gDirectory->Dump();} | |
300 | } | |
301 | return; | |
302 | } | |
303 | ||
304 | //__________________________________________________________________________ | |
305 | void AliMUONEventReconstructor::NextBkgGeantEvent(void) | |
306 | { | |
307 | // Get next event in background file for GEANT hits | |
308 | // Goes back to event number 0 when end of file is reached | |
309 | char treeName[20]; | |
310 | TBranch *branch; | |
311 | if (fPrintLevel >= 0) { | |
312 | cout << "Enter NextBkgGeantEvent" << endl;} | |
313 | // Clean previous event | |
314 | if(fBkgGeantTK) delete fBkgGeantTK; | |
315 | fBkgGeantTK = NULL; | |
316 | if(fBkgGeantParticles) fBkgGeantParticles->Clear(); | |
317 | if(fBkgGeantTH) delete fBkgGeantTH; | |
318 | fBkgGeantTH = NULL; | |
319 | if(fBkgGeantHits) fBkgGeantHits->Clear(); | |
320 | // Increment event number | |
321 | fBkgGeantEventNumber++; | |
322 | // Get access to Particles and Hits for event from background file | |
323 | if (fPrintLevel >= 2) {cout << "Before cd(Bkg)" << endl; gDirectory->Dump();} | |
324 | fBkgGeantFile->cd(); | |
325 | if (fPrintLevel >= 2) {cout << "After cd(Bkg)" << endl; gDirectory->Dump();} | |
326 | // Particles: TreeK for event and branch "Particles" | |
327 | sprintf(treeName, "TreeK%d", fBkgGeantEventNumber); | |
328 | fBkgGeantTK = (TTree*)gDirectory->Get(treeName); | |
329 | if (!fBkgGeantTK) { | |
330 | if (fPrintLevel >= 0) { | |
331 | cout << "Cannot find Kine Tree for background event: " << | |
332 | fBkgGeantEventNumber << endl; | |
333 | cout << "Goes back to event 0" << endl; | |
334 | } | |
335 | fBkgGeantEventNumber = 0; | |
336 | sprintf(treeName, "TreeK%d", fBkgGeantEventNumber); | |
337 | fBkgGeantTK = (TTree*)gDirectory->Get(treeName); | |
338 | if (!fBkgGeantTK) { | |
339 | cout << "ERROR: cannot find Kine Tree for background event: " << | |
340 | fBkgGeantEventNumber << endl; | |
341 | exit(0); | |
342 | } | |
343 | } | |
344 | if (fBkgGeantTK) | |
345 | fBkgGeantTK->SetBranchAddress("Particles", &fBkgGeantParticles); | |
346 | fBkgGeantTK->GetEvent(0); // why event 0 ???? necessary ???? | |
347 | // Hits: TreeH for event and branch "MUON" | |
348 | sprintf(treeName, "TreeH%d", fBkgGeantEventNumber); | |
349 | fBkgGeantTH = (TTree*)gDirectory->Get(treeName); | |
350 | if (!fBkgGeantTH) { | |
351 | cout << "ERROR: cannot find Hits Tree for background event: " << | |
352 | fBkgGeantEventNumber << endl; | |
353 | exit(0); | |
354 | } | |
355 | if (fBkgGeantTH && fBkgGeantHits) { | |
356 | branch = fBkgGeantTH->GetBranch("MUON"); | |
357 | if (branch) branch->SetAddress(&fBkgGeantHits); | |
358 | } | |
359 | fBkgGeantTH->GetEntries(); // necessary ???? | |
360 | // Back to the signal file | |
361 | ((gAlice->TreeK())->GetCurrentFile())->cd(); | |
362 | if (fPrintLevel >= 2) {cout << "After cd(gAlice)" << endl; gDirectory->Dump();} | |
363 | return; | |
364 | } | |
365 | ||
366 | //__________________________________________________________________________ | |
367 | void AliMUONEventReconstructor::EventReconstruct(void) | |
368 | { | |
369 | // To reconstruct one event | |
370 | if (fPrintLevel >= 1) cout << "enter EventReconstruct" << endl; | |
371 | MakeEventToBeReconstructed(); | |
372 | MakeSegments(); | |
373 | MakeTracks(); | |
d837040f | 374 | if (fMUONData->IsTriggerTrackBranchesInTree()) |
375 | ValidateTracksWithTrigger(); | |
376 | ||
377 | // Add tracks to MUON data container | |
378 | for(Int_t i=0; i<GetNRecTracks(); i++) { | |
379 | AliMUONTrack * track = (AliMUONTrack*) GetRecTracksPtr()->At(i); | |
380 | fMUONData->AddRecTrack(*track); | |
381 | } | |
382 | ||
a9e2aefa | 383 | return; |
384 | } | |
385 | ||
276c44b7 | 386 | //__________________________________________________________________________ |
387 | void AliMUONEventReconstructor::EventReconstructTrigger(void) | |
388 | { | |
389 | // To reconstruct one event | |
390 | if (fPrintLevel >= 1) cout << "enter EventReconstructTrigger" << endl; | |
391 | MakeTriggerTracks(); | |
392 | return; | |
393 | } | |
394 | ||
a9e2aefa | 395 | //__________________________________________________________________________ |
396 | void AliMUONEventReconstructor::ResetHitsForRec(void) | |
397 | { | |
398 | // To reset the array and the number of HitsForRec, | |
399 | // and also the number of HitsForRec | |
400 | // and the index of the first HitForRec per chamber | |
401 | if (fHitsForRecPtr) fHitsForRecPtr->Clear(); | |
402 | fNHitsForRec = 0; | |
9cbdf048 | 403 | for (Int_t ch = 0; ch < kMaxMuonTrackingChambers; ch++) |
a9e2aefa | 404 | fNHitsForRecPerChamber[ch] = fIndexOfFirstHitForRecPerChamber[ch] = 0; |
405 | return; | |
406 | } | |
407 | ||
408 | //__________________________________________________________________________ | |
409 | void AliMUONEventReconstructor::ResetSegments(void) | |
410 | { | |
411 | // To reset the TClonesArray of segments and the number of Segments | |
412 | // for all stations | |
9cbdf048 | 413 | for (Int_t st = 0; st < kMaxMuonTrackingStations; st++) { |
a9e2aefa | 414 | if (fSegmentsPtr[st]) fSegmentsPtr[st]->Clear(); |
415 | fNSegments[st] = 0; | |
416 | } | |
417 | return; | |
418 | } | |
419 | ||
420 | //__________________________________________________________________________ | |
421 | void AliMUONEventReconstructor::ResetTracks(void) | |
422 | { | |
423 | // To reset the TClonesArray of reconstructed tracks | |
8429a5e4 | 424 | if (fRecTracksPtr) fRecTracksPtr->Delete(); |
425 | // Delete in order that the Track destructors are called, | |
426 | // hence the space for the TClonesArray of pointers to TrackHit's is freed | |
a9e2aefa | 427 | fNRecTracks = 0; |
428 | return; | |
429 | } | |
430 | ||
276c44b7 | 431 | //__________________________________________________________________________ |
432 | void AliMUONEventReconstructor::ResetTriggerTracks(void) | |
433 | { | |
434 | // To reset the TClonesArray of reconstructed trigger tracks | |
435 | if (fRecTriggerTracksPtr) fRecTriggerTracksPtr->Delete(); | |
436 | // Delete in order that the Track destructors are called, | |
437 | // hence the space for the TClonesArray of pointers to TrackHit's is freed | |
438 | fNRecTriggerTracks = 0; | |
439 | return; | |
440 | } | |
441 | ||
8429a5e4 | 442 | //__________________________________________________________________________ |
443 | void AliMUONEventReconstructor::ResetTrackHits(void) | |
444 | { | |
445 | // To reset the TClonesArray of hits on reconstructed tracks | |
446 | if (fRecTrackHitsPtr) fRecTrackHitsPtr->Clear(); | |
447 | fNRecTrackHits = 0; | |
448 | return; | |
449 | } | |
450 | ||
a9e2aefa | 451 | //__________________________________________________________________________ |
452 | void AliMUONEventReconstructor::MakeEventToBeReconstructed(void) | |
453 | { | |
454 | // To make the list of hits to be reconstructed, | |
455 | // either from the GEANT hits or from the raw clusters | |
456 | // according to the parameter set for the reconstructor | |
e191bb57 | 457 | // TString evfoldname = AliConfig::GetDefaultEventFolderName();//to be interfaced properly |
88cb7938 | 458 | |
52c9bc11 | 459 | // AliRunLoader* rl = AliRunLoader::GetRunLoader(evfoldname); |
460 | // if (rl == 0x0) | |
461 | // { | |
462 | // Error("MakeEventToBeReconstructed", | |
463 | // "Can not find Run Loader in Event Folder named %s.", | |
464 | // evfoldname.Data()); | |
465 | // return; | |
466 | // } | |
467 | // AliLoader* gime = rl->GetLoader("MUONLoader"); | |
468 | // if (gime == 0x0) | |
469 | // { | |
470 | // Error("MakeEventToBeReconstructed","Can not get MUON Loader from Run Loader."); | |
471 | // return; | |
472 | // } | |
88cb7938 | 473 | |
a9e2aefa | 474 | if (fPrintLevel >= 1) cout << "enter MakeEventToBeReconstructed" << endl; |
475 | ResetHitsForRec(); | |
476 | if (fRecGeantHits == 1) { | |
477 | // Reconstruction from GEANT hits | |
478 | // Back to the signal file | |
52c9bc11 | 479 | TTree* treeH = fLoader->TreeH(); |
88cb7938 | 480 | if (treeH == 0x0) |
481 | { | |
52c9bc11 | 482 | Int_t retval = fLoader->LoadHits(); |
88cb7938 | 483 | if ( retval) |
484 | { | |
485 | Error("MakeEventToBeReconstructed","Error occured while loading hits."); | |
486 | return; | |
487 | } | |
52c9bc11 | 488 | treeH = fLoader->TreeH(); |
88cb7938 | 489 | if (treeH == 0x0) |
490 | { | |
491 | Error("MakeEventToBeReconstructed","Can not get TreeH"); | |
492 | return; | |
493 | } | |
494 | } | |
52c9bc11 | 495 | fMUONData->SetTreeAddress("H"); |
496 | AddHitsForRecFromGEANT(treeH); | |
88cb7938 | 497 | |
a9e2aefa | 498 | // Background hits |
499 | AddHitsForRecFromBkgGEANT(fBkgGeantTH, fBkgGeantHits); | |
500 | // Sort HitsForRec in increasing order with respect to chamber number | |
501 | SortHitsForRecWithIncreasingChamber(); | |
502 | } | |
503 | else { | |
504 | // Reconstruction from raw clusters | |
505 | // AliMUON *MUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? | |
506 | // Security on MUON ???? | |
507 | // TreeR assumed to be be "prepared" in calling function | |
508 | // by "MUON->GetTreeR(nev)" ???? | |
52c9bc11 | 509 | TTree *treeR = fLoader->TreeR(); |
510 | fMUONData->SetTreeAddress("RC"); | |
9cbdf048 | 511 | AddHitsForRecFromRawClusters(treeR); |
a9e2aefa | 512 | // No sorting: it is done automatically in the previous function |
513 | } | |
514 | if (fPrintLevel >= 10) { | |
515 | cout << "end of MakeEventToBeReconstructed" << endl; | |
516 | cout << "NHitsForRec: " << fNHitsForRec << endl; | |
9cbdf048 | 517 | for (Int_t ch = 0; ch < kMaxMuonTrackingChambers; ch++) { |
a9e2aefa | 518 | cout << "chamber(0...): " << ch |
519 | << " NHitsForRec: " << fNHitsForRecPerChamber[ch] | |
520 | << " index(first HitForRec): " << fIndexOfFirstHitForRecPerChamber[ch] | |
521 | << endl; | |
522 | for (Int_t hit = fIndexOfFirstHitForRecPerChamber[ch]; | |
523 | hit < fIndexOfFirstHitForRecPerChamber[ch] + fNHitsForRecPerChamber[ch]; | |
524 | hit++) { | |
525 | cout << "HitForRec index(0...): " << hit << endl; | |
526 | ((*fHitsForRecPtr)[hit])->Dump(); | |
527 | } | |
528 | } | |
529 | } | |
530 | return; | |
531 | } | |
532 | ||
533 | //__________________________________________________________________________ | |
534 | void AliMUONEventReconstructor::AddHitsForRecFromGEANT(TTree *TH) | |
535 | { | |
536 | // To add to the list of hits for reconstruction | |
537 | // the GEANT signal hits from a hit tree TH. | |
83dbc640 | 538 | Int_t hitBits, chamBits; //AZ |
a9e2aefa | 539 | if (fPrintLevel >= 2) |
540 | cout << "enter AddHitsForRecFromGEANT with TH: " << TH << endl; | |
541 | if (TH == NULL) return; | |
52c9bc11 | 542 | // AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? |
543 | //AliMUONData * muondata = pMUON->GetMUONData(); | |
a9e2aefa | 544 | // Security on MUON ???? |
545 | // See whether it could be the same for signal and background ???? | |
546 | // Loop over tracks in tree | |
547 | Int_t ntracks = (Int_t) TH->GetEntries(); | |
548 | if (fPrintLevel >= 2) | |
549 | cout << "ntracks: " << ntracks << endl; | |
83dbc640 | 550 | fMuons = 0; //AZ |
a9e2aefa | 551 | for (Int_t track = 0; track < ntracks; track++) { |
52c9bc11 | 552 | fMUONData->ResetHits(); |
a9e2aefa | 553 | TH->GetEvent(track); |
554 | // Loop over hits | |
555 | Int_t hit = 0; | |
83dbc640 | 556 | hitBits = 0; // AZ |
557 | chamBits = 0; // AZ | |
558 | Int_t itrack = track; //AZ | |
38302c61 | 559 | |
560 | Int_t ihit, nhits=0; | |
52c9bc11 | 561 | nhits = (Int_t) fMUONData->Hits()->GetEntriesFast(); |
38302c61 | 562 | AliMUONHit* mHit=0x0; |
1391e633 | 563 | |
38302c61 | 564 | for(ihit=0; ihit<nhits; ihit++) { |
52c9bc11 | 565 | mHit = static_cast<AliMUONHit*>(fMUONData->Hits()->At(ihit)); |
38302c61 | 566 | Int_t ipart = TMath::Abs ((Int_t) mHit->Particle()); //AZ |
567 | if (NewHitForRecFromGEANT(mHit,track, hit, 1) && ipart == 13 | |
568 | //if (NewHitForRecFromGEANT(mHit,itrack-1, hit, 1) && ipart == 13 | |
1391e633 | 569 | && itrack <= 2 && !BIT(mHit->Chamber()-1) ) chamBits |= BIT(mHit->Chamber()-1); //AZ - set bit |
38302c61 | 570 | } |
1391e633 | 571 | |
83dbc640 | 572 | if (chamBits&3 && chamBits>>2&3 && chamBits>>4&3 && chamBits>>6&3 && |
573 | chamBits>>8&3 && ((chamBits>>6&3)==3 || (chamBits>>8&3)==3)) | |
574 | fMuons += 1; //AZ | |
575 | //if (chamBits&3 && chamBits>>2&3 && chamBits>>4&3 && chamBits>>6&3 && | |
576 | // chamBits>>8&3 && ((chamBits>>6&3)==3 || (chamBits>>8&3)==3) && | |
577 | // ((chamBits&3)==3 || (chamBits>>2&3)==3)) fMuons += 1; | |
a9e2aefa | 578 | } // end of track loop |
579 | return; | |
580 | } | |
581 | ||
582 | //__________________________________________________________________________ | |
583 | void AliMUONEventReconstructor::AddHitsForRecFromBkgGEANT(TTree *TH, TClonesArray *Hits) | |
584 | { | |
585 | // To add to the list of hits for reconstruction | |
586 | // the GEANT background hits from a hit tree TH and a pointer Hits to a hit list. | |
587 | // How to have only one function "AddHitsForRecFromGEANT" ???? | |
588 | if (fPrintLevel >= 2) | |
589 | cout << "enter AddHitsForRecFromBkgGEANT with TH: " << TH << endl; | |
590 | if (TH == NULL) return; | |
591 | // Loop over tracks in tree | |
592 | Int_t ntracks = (Int_t) TH->GetEntries(); | |
593 | if (fPrintLevel >= 2) | |
594 | cout << "ntracks: " << ntracks << endl; | |
595 | for (Int_t track = 0; track < ntracks; track++) { | |
596 | if (Hits) Hits->Clear(); | |
597 | TH->GetEvent(track); | |
598 | // Loop over hits | |
599 | for (Int_t hit = 0; hit < Hits->GetEntriesFast(); hit++) { | |
600 | NewHitForRecFromGEANT((AliMUONHit*) (*Hits)[hit], track, hit, 0); | |
601 | } // end of hit loop | |
602 | } // end of track loop | |
603 | return; | |
604 | } | |
605 | ||
606 | //__________________________________________________________________________ | |
607 | AliMUONHitForRec* AliMUONEventReconstructor::NewHitForRecFromGEANT(AliMUONHit* Hit, Int_t TrackNumber, Int_t HitNumber, Int_t Signal) | |
608 | { | |
609 | // To make a new hit for reconstruction from a GEANT hit pointed to by "Hit", | |
610 | // with hit number "HitNumber" in the track numbered "TrackNumber", | |
611 | // either from signal ("Signal" = 1) or background ("Signal" = 0) event. | |
612 | // Selects hits in tracking (not trigger) chambers. | |
613 | // Takes into account the efficiency (fEfficiency) | |
614 | // and the smearing from resolution (fBendingResolution and fNonBendingResolution). | |
615 | // Adds a condition on the radius between RMin and RMax | |
616 | // to better simulate the real chambers. | |
617 | // Returns the pointer to the new hit for reconstruction, | |
618 | // or NULL in case of inefficiency or non tracking chamber or bad radius. | |
619 | // No condition on at most 20 cm from a muon from a resonance | |
620 | // like in Fortran TRACKF_STAT. | |
621 | AliMUONHitForRec* hitForRec; | |
622 | Double_t bendCoor, nonBendCoor, radius; | |
0a5f36d9 | 623 | Int_t chamber = Hit->Chamber() - 1; // chamber(0...) |
a9e2aefa | 624 | // only in tracking chambers (fChamber starts at 1) |
9cbdf048 | 625 | if (chamber >= kMaxMuonTrackingChambers) return NULL; |
a9e2aefa | 626 | // only if hit is efficient (keep track for checking ????) |
627 | if (gRandom->Rndm() > fEfficiency) return NULL; | |
628 | // only if radius between RMin and RMax | |
94de3818 | 629 | bendCoor = Hit->Y(); |
630 | nonBendCoor = Hit->X(); | |
a9e2aefa | 631 | radius = TMath::Sqrt((bendCoor * bendCoor) + (nonBendCoor * nonBendCoor)); |
d0bfce8d | 632 | // This cut is not needed with a realistic chamber geometry !!!! |
633 | // if ((radius < fRMin[chamber]) || (radius > fRMax[chamber])) return NULL; | |
a9e2aefa | 634 | // new AliMUONHitForRec from GEANT hit and increment number of AliMUONHitForRec's |
635 | hitForRec = new ((*fHitsForRecPtr)[fNHitsForRec]) AliMUONHitForRec(Hit); | |
636 | fNHitsForRec++; | |
637 | // add smearing from resolution | |
638 | hitForRec->SetBendingCoor(bendCoor + gRandom->Gaus(0., fBendingResolution)); | |
639 | hitForRec->SetNonBendingCoor(nonBendCoor | |
640 | + gRandom->Gaus(0., fNonBendingResolution)); | |
d0bfce8d | 641 | // // !!!! without smearing |
642 | // hitForRec->SetBendingCoor(bendCoor); | |
643 | // hitForRec->SetNonBendingCoor(nonBendCoor); | |
a9e2aefa | 644 | // more information into HitForRec |
645 | // resolution: angular effect to be added here ???? | |
646 | hitForRec->SetBendingReso2(fBendingResolution * fBendingResolution); | |
647 | hitForRec->SetNonBendingReso2(fNonBendingResolution * fNonBendingResolution); | |
648 | // GEANT track info | |
649 | hitForRec->SetHitNumber(HitNumber); | |
650 | hitForRec->SetTHTrack(TrackNumber); | |
651 | hitForRec->SetGeantSignal(Signal); | |
652 | if (fPrintLevel >= 10) { | |
653 | cout << "track: " << TrackNumber << " hit: " << HitNumber << endl; | |
654 | Hit->Dump(); | |
655 | cout << "AliMUONHitForRec number (1...): " << fNHitsForRec << endl; | |
656 | hitForRec->Dump();} | |
657 | return hitForRec; | |
658 | } | |
659 | ||
660 | //__________________________________________________________________________ | |
661 | void AliMUONEventReconstructor::SortHitsForRecWithIncreasingChamber() | |
662 | { | |
663 | // Sort HitsForRec's in increasing order with respect to chamber number. | |
664 | // Uses the function "Compare". | |
665 | // Update the information for HitsForRec per chamber too. | |
666 | Int_t ch, nhits, prevch; | |
667 | fHitsForRecPtr->Sort(); | |
9cbdf048 | 668 | for (ch = 0; ch < kMaxMuonTrackingChambers; ch++) { |
a9e2aefa | 669 | fNHitsForRecPerChamber[ch] = 0; |
670 | fIndexOfFirstHitForRecPerChamber[ch] = 0; | |
671 | } | |
672 | prevch = 0; // previous chamber | |
673 | nhits = 0; // number of hits in current chamber | |
674 | // Loop over HitsForRec | |
675 | for (Int_t hit = 0; hit < fNHitsForRec; hit++) { | |
676 | // chamber number (0...) | |
677 | ch = ((AliMUONHitForRec*) ((*fHitsForRecPtr)[hit]))->GetChamberNumber(); | |
678 | // increment number of hits in current chamber | |
679 | (fNHitsForRecPerChamber[ch])++; | |
680 | // update index of first HitForRec in current chamber | |
681 | // if chamber number different from previous one | |
682 | if (ch != prevch) { | |
683 | fIndexOfFirstHitForRecPerChamber[ch] = hit; | |
684 | prevch = ch; | |
685 | } | |
686 | } | |
687 | return; | |
688 | } | |
689 | ||
690 | // //__________________________________________________________________________ | |
691 | // void AliMUONEventReconstructor::AddHitsForRecFromCathodeCorrelations(TTree* TC) | |
692 | // { | |
693 | // // OLD VERSION WHEN ONE ONE WAS USING SO CALLED CATHODE CORRELATIONS | |
694 | // // To add to the list of hits for reconstruction | |
695 | // // the (cathode correlated) raw clusters | |
696 | // // No condition added, like in Fortran TRACKF_STAT, | |
697 | // // on the radius between RMin and RMax. | |
698 | // AliMUONHitForRec *hitForRec; | |
699 | // if (fPrintLevel >= 1) cout << "enter AddHitsForRecFromCathodeCorrelations" << endl; | |
700 | // AliMUON *MUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? | |
701 | // // Security on MUON ???? | |
702 | // // Loop over tracking chambers | |
9cbdf048 | 703 | // for (Int_t ch = 0; ch < kMaxMuonTrackingChambers; ch++) { |
a9e2aefa | 704 | // // number of HitsForRec to 0 for the chamber |
705 | // fNHitsForRecPerChamber[ch] = 0; | |
706 | // // index of first HitForRec for the chamber | |
707 | // if (ch == 0) fIndexOfFirstHitForRecPerChamber[ch] = 0; | |
708 | // else fIndexOfFirstHitForRecPerChamber[ch] = fNHitsForRec; | |
709 | // TClonesArray *reconst_hits = MUON->ReconstHitsAddress(ch); | |
710 | // MUON->ResetReconstHits(); | |
711 | // TC->GetEvent(); | |
712 | // Int_t ncor = (Int_t)reconst_hits->GetEntries(); | |
713 | // // Loop over (cathode correlated) raw clusters | |
714 | // for (Int_t cor = 0; cor < ncor; cor++) { | |
715 | // AliMUONReconstHit * mCor = | |
716 | // (AliMUONReconstHit*) reconst_hits->UncheckedAt(cor); | |
717 | // // new AliMUONHitForRec from (cathode correlated) raw cluster | |
718 | // // and increment number of AliMUONHitForRec's (total and in chamber) | |
719 | // hitForRec = new ((*fHitsForRecPtr)[fNHitsForRec]) AliMUONHitForRec(mCor); | |
720 | // fNHitsForRec++; | |
721 | // (fNHitsForRecPerChamber[ch])++; | |
722 | // // more information into HitForRec | |
723 | // hitForRec->SetChamberNumber(ch); | |
724 | // hitForRec->SetHitNumber(cor); | |
725 | // // Z coordinate of the chamber (cm) with sign opposite to GEANT sign | |
726 | // // could (should) be more exact from chamber geometry ???? | |
727 | // hitForRec->SetZ(-(&(MUON->Chamber(ch)))->Z()); | |
728 | // if (fPrintLevel >= 10) { | |
729 | // cout << "chamber (0...): " << ch << | |
730 | // " cathcorrel (0...): " << cor << endl; | |
731 | // mCor->Dump(); | |
732 | // cout << "AliMUONHitForRec number (1...): " << fNHitsForRec << endl; | |
733 | // hitForRec->Dump();} | |
734 | // } // end of cluster loop | |
735 | // } // end of chamber loop | |
736 | // return; | |
737 | // } | |
738 | ||
739 | //__________________________________________________________________________ | |
740 | void AliMUONEventReconstructor::AddHitsForRecFromRawClusters(TTree* TR) | |
741 | { | |
742 | // To add to the list of hits for reconstruction all the raw clusters | |
743 | // No condition added, like in Fortran TRACKF_STAT, | |
744 | // on the radius between RMin and RMax. | |
745 | AliMUONHitForRec *hitForRec; | |
746 | AliMUONRawCluster *clus; | |
f69d51b5 | 747 | Int_t iclus, nclus, nTRentries; |
a9e2aefa | 748 | TClonesArray *rawclusters; |
749 | if (fPrintLevel >= 1) cout << "enter AddHitsForRecFromRawClusters" << endl; | |
88cb7938 | 750 | |
e191bb57 | 751 | // TString evfoldname = AliConfig::GetDefaultEventFolderName();//to be interfaced properly |
52c9bc11 | 752 | // AliRunLoader* rl = AliRunLoader::GetRunLoader(evfoldname); |
753 | // if (rl == 0x0) | |
754 | // { | |
755 | // Error("MakeEventToBeReconstructed", | |
756 | // "Can not find Run Loader in Event Folder named %s.", | |
757 | // evfoldname.Data()); | |
758 | // return; | |
759 | // } | |
760 | // AliLoader* gime = rl->GetLoader("MUONLoader"); | |
761 | // if (gime == 0x0) | |
762 | // { | |
763 | // Error("MakeEventToBeReconstructed","Can not get MUON Loader from Run Loader."); | |
764 | // return; | |
765 | // } | |
766 | // // Loading AliRun master | |
767 | // rl->LoadgAlice(); | |
768 | // gAlice = rl->GetAliRun(); | |
88cb7938 | 769 | |
770 | // Loading MUON subsystem | |
52c9bc11 | 771 | // AliMUON * pMUON = (AliMUON *) gAlice->GetDetector("MUON"); |
88cb7938 | 772 | |
f69d51b5 | 773 | nTRentries = Int_t(TR->GetEntries()); |
774 | if (nTRentries != 1) { | |
775 | cout << "Error in AliMUONEventReconstructor::AddHitsForRecFromRawClusters" | |
776 | << endl; | |
777 | cout << "nTRentries = " << nTRentries << " not equal to 1" << endl; | |
778 | exit(0); | |
779 | } | |
52c9bc11 | 780 | fLoader->TreeR()->GetEvent(0); // only one entry |
781 | ||
a9e2aefa | 782 | // Loop over tracking chambers |
9cbdf048 | 783 | for (Int_t ch = 0; ch < kMaxMuonTrackingChambers; ch++) { |
a9e2aefa | 784 | // number of HitsForRec to 0 for the chamber |
785 | fNHitsForRecPerChamber[ch] = 0; | |
786 | // index of first HitForRec for the chamber | |
787 | if (ch == 0) fIndexOfFirstHitForRecPerChamber[ch] = 0; | |
788 | else fIndexOfFirstHitForRecPerChamber[ch] = fNHitsForRec; | |
52c9bc11 | 789 | rawclusters =fMUONData->RawClusters(ch); |
f69d51b5 | 790 | // pMUON->ResetRawClusters(); |
791 | // TR->GetEvent((Int_t) (TR->GetEntries()) - 1); // to be checked ???? | |
a9e2aefa | 792 | nclus = (Int_t) (rawclusters->GetEntries()); |
793 | // Loop over (cathode correlated) raw clusters | |
794 | for (iclus = 0; iclus < nclus; iclus++) { | |
795 | clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(iclus); | |
796 | // new AliMUONHitForRec from raw cluster | |
797 | // and increment number of AliMUONHitForRec's (total and in chamber) | |
798 | hitForRec = new ((*fHitsForRecPtr)[fNHitsForRec]) AliMUONHitForRec(clus); | |
799 | fNHitsForRec++; | |
800 | (fNHitsForRecPerChamber[ch])++; | |
801 | // more information into HitForRec | |
802 | // resolution: info should be already in raw cluster and taken from it ???? | |
803 | hitForRec->SetBendingReso2(fBendingResolution * fBendingResolution); | |
804 | hitForRec->SetNonBendingReso2(fNonBendingResolution * fNonBendingResolution); | |
805 | // original raw cluster | |
806 | hitForRec->SetChamberNumber(ch); | |
807 | hitForRec->SetHitNumber(iclus); | |
ba5b68db | 808 | // Z coordinate of the raw cluster (cm) |
cfe0107f | 809 | hitForRec->SetZ(clus->fZ[0]); |
a9e2aefa | 810 | if (fPrintLevel >= 10) { |
811 | cout << "chamber (0...): " << ch << | |
812 | " raw cluster (0...): " << iclus << endl; | |
813 | clus->Dump(); | |
814 | cout << "AliMUONHitForRec number (1...): " << fNHitsForRec << endl; | |
815 | hitForRec->Dump();} | |
816 | } // end of cluster loop | |
817 | } // end of chamber loop | |
83dbc640 | 818 | SortHitsForRecWithIncreasingChamber(); //AZ |
a9e2aefa | 819 | return; |
820 | } | |
821 | ||
822 | //__________________________________________________________________________ | |
823 | void AliMUONEventReconstructor::MakeSegments(void) | |
824 | { | |
825 | // To make the list of segments in all stations, | |
826 | // from the list of hits to be reconstructed | |
827 | if (fPrintLevel >= 1) cout << "enter MakeSegments" << endl; | |
828 | ResetSegments(); | |
829 | // Loop over stations | |
83dbc640 | 830 | Int_t nb = (fTrackMethod == 2) ? 3 : 0; //AZ |
831 | //AZ for (Int_t st = 0; st < kMaxMuonTrackingStations; st++) | |
832 | for (Int_t st = nb; st < kMaxMuonTrackingStations; st++) //AZ | |
a9e2aefa | 833 | MakeSegmentsPerStation(st); |
834 | if (fPrintLevel >= 10) { | |
835 | cout << "end of MakeSegments" << endl; | |
9cbdf048 | 836 | for (Int_t st = 0; st < kMaxMuonTrackingStations; st++) { |
a9e2aefa | 837 | cout << "station(0...): " << st |
838 | << " Segments: " << fNSegments[st] | |
839 | << endl; | |
840 | for (Int_t seg = 0; | |
841 | seg < fNSegments[st]; | |
842 | seg++) { | |
843 | cout << "Segment index(0...): " << seg << endl; | |
844 | ((*fSegmentsPtr[st])[seg])->Dump(); | |
845 | } | |
846 | } | |
847 | } | |
848 | return; | |
849 | } | |
850 | ||
851 | //__________________________________________________________________________ | |
852 | void AliMUONEventReconstructor::MakeSegmentsPerStation(Int_t Station) | |
853 | { | |
854 | // To make the list of segments in station number "Station" (0...) | |
855 | // from the list of hits to be reconstructed. | |
856 | // Updates "fNSegments"[Station]. | |
857 | // Segments in stations 4 and 5 are sorted | |
858 | // according to increasing absolute value of "impact parameter" | |
859 | AliMUONHitForRec *hit1Ptr, *hit2Ptr; | |
860 | AliMUONSegment *segment; | |
861 | Bool_t last2st; | |
862 | Double_t bendingSlope, distBend, distNonBend, extBendCoor, extNonBendCoor, | |
d0bfce8d | 863 | impactParam = 0., maxImpactParam = 0., minImpactParam = 0.; // =0 to avoid compilation warnings. |
9cbdf048 | 864 | AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? |
a9e2aefa | 865 | if (fPrintLevel >= 1) |
866 | cout << "enter MakeSegmentsPerStation (0...) " << Station << endl; | |
867 | // first and second chambers (0...) in the station | |
868 | Int_t ch1 = 2 * Station; | |
869 | Int_t ch2 = ch1 + 1; | |
870 | // variable true for stations downstream of the dipole: | |
871 | // Station(0..4) equal to 3 or 4 | |
872 | if ((Station == 3) || (Station == 4)) { | |
873 | last2st = kTRUE; | |
874 | // maximum impact parameter (cm) according to fMinBendingMomentum... | |
875 | maxImpactParam = | |
876 | TMath::Abs(GetImpactParamFromBendingMomentum(fMinBendingMomentum)); | |
d0bfce8d | 877 | // minimum impact parameter (cm) according to fMaxBendingMomentum... |
878 | minImpactParam = | |
879 | TMath::Abs(GetImpactParamFromBendingMomentum(fMaxBendingMomentum)); | |
a9e2aefa | 880 | } |
881 | else last2st = kFALSE; | |
882 | // extrapolation factor from Z of first chamber to Z of second chamber | |
883 | // dZ to be changed to take into account fine structure of chambers ???? | |
884 | Double_t extrapFact = | |
9cbdf048 | 885 | (&(pMUON->Chamber(ch2)))->Z() / (&(pMUON->Chamber(ch1)))->Z(); |
a9e2aefa | 886 | // index for current segment |
887 | Int_t segmentIndex = 0; | |
888 | // Loop over HitsForRec in the first chamber of the station | |
889 | for (Int_t hit1 = fIndexOfFirstHitForRecPerChamber[ch1]; | |
890 | hit1 < fIndexOfFirstHitForRecPerChamber[ch1] + fNHitsForRecPerChamber[ch1]; | |
891 | hit1++) { | |
892 | // pointer to the HitForRec | |
893 | hit1Ptr = (AliMUONHitForRec*) ((*fHitsForRecPtr)[hit1]); | |
894 | // extrapolation, | |
895 | // on the straight line joining the HitForRec to the vertex (0,0,0), | |
896 | // to the Z of the second chamber of the station | |
897 | extBendCoor = extrapFact * hit1Ptr->GetBendingCoor(); | |
898 | extNonBendCoor = extrapFact * hit1Ptr->GetNonBendingCoor(); | |
899 | // Loop over HitsForRec in the second chamber of the station | |
900 | for (Int_t hit2 = fIndexOfFirstHitForRecPerChamber[ch2]; | |
901 | hit2 < fIndexOfFirstHitForRecPerChamber[ch2] + fNHitsForRecPerChamber[ch2]; | |
902 | hit2++) { | |
903 | // pointer to the HitForRec | |
904 | hit2Ptr = (AliMUONHitForRec*) ((*fHitsForRecPtr)[hit2]); | |
905 | // absolute values of distances, in bending and non bending planes, | |
906 | // between the HitForRec in the second chamber | |
907 | // and the previous extrapolation | |
908 | distBend = TMath::Abs(hit2Ptr->GetBendingCoor() - extBendCoor); | |
909 | distNonBend = TMath::Abs(hit2Ptr->GetNonBendingCoor() - extNonBendCoor); | |
910 | if (last2st) { | |
911 | // bending slope | |
912 | bendingSlope = (hit1Ptr->GetBendingCoor() - hit2Ptr->GetBendingCoor()) / | |
913 | (hit1Ptr->GetZ() - hit2Ptr->GetZ()); | |
914 | // absolute value of impact parameter | |
915 | impactParam = | |
31817925 | 916 | TMath::Abs(hit1Ptr->GetBendingCoor() - hit1Ptr->GetZ() * bendingSlope); |
a9e2aefa | 917 | } |
918 | // check for distances not too large, | |
919 | // and impact parameter not too big if stations downstream of the dipole. | |
920 | // Conditions "distBend" and "impactParam" correlated for these stations ???? | |
921 | if ((distBend < fSegmentMaxDistBending[Station]) && | |
922 | (distNonBend < fSegmentMaxDistNonBending[Station]) && | |
d0bfce8d | 923 | (!last2st || (impactParam < maxImpactParam)) && |
924 | (!last2st || (impactParam > minImpactParam))) { | |
a9e2aefa | 925 | // make new segment |
926 | segment = new ((*fSegmentsPtr[Station])[segmentIndex]) | |
927 | AliMUONSegment(hit1Ptr, hit2Ptr); | |
928 | // update "link" to this segment from the hit in the first chamber | |
929 | if (hit1Ptr->GetNSegments() == 0) | |
930 | hit1Ptr->SetIndexOfFirstSegment(segmentIndex); | |
931 | hit1Ptr->SetNSegments(hit1Ptr->GetNSegments() + 1); | |
932 | if (fPrintLevel >= 10) { | |
933 | cout << "segmentIndex(0...): " << segmentIndex | |
934 | << " distBend: " << distBend | |
935 | << " distNonBend: " << distNonBend | |
936 | << endl; | |
937 | segment->Dump(); | |
938 | cout << "HitForRec in first chamber" << endl; | |
939 | hit1Ptr->Dump(); | |
940 | cout << "HitForRec in second chamber" << endl; | |
941 | hit2Ptr->Dump(); | |
942 | }; | |
943 | // increment index for current segment | |
944 | segmentIndex++; | |
945 | } | |
946 | } //for (Int_t hit2 | |
947 | } // for (Int_t hit1... | |
948 | fNSegments[Station] = segmentIndex; | |
949 | // Sorting according to "impact parameter" if station(1..5) 4 or 5, | |
950 | // i.e. Station(0..4) 3 or 4, using the function "Compare". | |
951 | // After this sorting, it is impossible to use | |
952 | // the "fNSegments" and "fIndexOfFirstSegment" | |
953 | // of the HitForRec in the first chamber to explore all segments formed with it. | |
954 | // Is this sorting really needed ???? | |
955 | if ((Station == 3) || (Station == 4)) (fSegmentsPtr[Station])->Sort(); | |
956 | if (fPrintLevel >= 1) cout << "Station: " << Station << " NSegments: " | |
957 | << fNSegments[Station] << endl; | |
958 | return; | |
959 | } | |
960 | ||
961 | //__________________________________________________________________________ | |
962 | void AliMUONEventReconstructor::MakeTracks(void) | |
963 | { | |
964 | // To make the tracks, | |
965 | // from the list of segments and points in all stations | |
966 | if (fPrintLevel >= 1) cout << "enter MakeTracks" << endl; | |
8429a5e4 | 967 | // The order may be important for the following Reset's |
a9e2aefa | 968 | ResetTracks(); |
8429a5e4 | 969 | ResetTrackHits(); |
83dbc640 | 970 | if (fTrackMethod == 2) { //AZ - Kalman filter |
971 | MakeTrackCandidatesK(); | |
972 | // Follow tracks in stations(1..) 3, 2 and 1 | |
973 | FollowTracksK(); | |
974 | // Remove double tracks | |
975 | RemoveDoubleTracksK(); | |
976 | // Propagate tracks to the vertex thru absorber | |
977 | GoToVertex(); | |
d837040f | 978 | } else { |
83dbc640 | 979 | // Look for candidates from at least 3 aligned points in stations(1..) 4 and 5 |
980 | MakeTrackCandidates(); | |
981 | // Follow tracks in stations(1..) 3, 2 and 1 | |
982 | FollowTracks(); | |
983 | // Remove double tracks | |
984 | RemoveDoubleTracks(); | |
d837040f | 985 | UpdateTrackParamAtHit(); |
52c9bc11 | 986 | } |
a9e2aefa | 987 | return; |
988 | } | |
989 | ||
276c44b7 | 990 | //__________________________________________________________________________ |
d837040f | 991 | void AliMUONEventReconstructor::ValidateTracksWithTrigger(void) |
992 | { | |
993 | AliMUONTrack *track; | |
24ab3324 | 994 | TClonesArray *recTriggerTracks; |
995 | ||
996 | fMUONData->ResetRecTriggerTracks(); | |
997 | fMUONData->SetTreeAddress("RL"); | |
998 | fMUONData->GetRecTriggerTracks(); | |
999 | recTriggerTracks = fMUONData->RecTriggerTracks(); | |
e8765288 | 1000 | |
d837040f | 1001 | track = (AliMUONTrack*) fRecTracksPtr->First(); |
1002 | while (track) { | |
1003 | track->MatchTriggerTrack(recTriggerTracks); | |
1004 | track = (AliMUONTrack*) fRecTracksPtr->After(track); | |
e8765288 | 1005 | } |
24ab3324 | 1006 | |
d837040f | 1007 | } |
1008 | ||
1009 | //__________________________________________________________________________ | |
1010 | Bool_t AliMUONEventReconstructor::MakeTriggerTracks(void) | |
276c44b7 | 1011 | { |
1012 | // To make the trigger tracks from Local Trigger | |
1013 | if (fPrintLevel >= 1) cout << "enter MakeTriggerTracks" << endl; | |
52c9bc11 | 1014 | // ResetTriggerTracks(); |
276c44b7 | 1015 | |
1016 | Int_t nTRentries; | |
52c9bc11 | 1017 | Long_t gloTrigPat; |
276c44b7 | 1018 | TClonesArray *localTrigger; |
9131b4fe | 1019 | TClonesArray *globalTrigger; |
276c44b7 | 1020 | AliMUONLocalTrigger *locTrg; |
9131b4fe | 1021 | AliMUONGlobalTrigger *gloTrg; |
276c44b7 | 1022 | AliMUONTriggerCircuit *circuit; |
52c9bc11 | 1023 | AliMUONTriggerTrack *recTriggerTrack = 0; |
d837040f | 1024 | |
52c9bc11 | 1025 | TTree* TR = fLoader->TreeR(); |
276c44b7 | 1026 | |
276c44b7 | 1027 | // Loading MUON subsystem |
1028 | AliMUON * pMUON = (AliMUON *) gAlice->GetDetector("MUON"); | |
1029 | ||
1030 | nTRentries = Int_t(TR->GetEntries()); | |
d837040f | 1031 | |
1032 | TR->GetEvent(0); // only one entry | |
1033 | ||
1034 | if (!(fMUONData->IsTriggerBranchesInTree())) { | |
1035 | cout << "Warning in AliMUONEventReconstructor::MakeTriggerTracks" | |
52c9bc11 | 1036 | << endl; |
d837040f | 1037 | cout << "Trigger information is not avalaible, nTRentries = " << nTRentries << " not equal to 1" << endl; |
1038 | return kFALSE; | |
276c44b7 | 1039 | } |
276c44b7 | 1040 | |
52c9bc11 | 1041 | fMUONData->SetTreeAddress("GLT"); |
1042 | fMUONData->GetTrigger(); | |
9131b4fe | 1043 | |
52c9bc11 | 1044 | // global trigger for trigger pattern |
9131b4fe | 1045 | gloTrigPat = 0; |
52c9bc11 | 1046 | globalTrigger = fMUONData->GlobalTrigger(); |
9131b4fe | 1047 | gloTrg = (AliMUONGlobalTrigger*)globalTrigger->UncheckedAt(0); |
1048 | if (gloTrg->SinglePlusLpt()) gloTrigPat|= 0x1; | |
1049 | if (gloTrg->SinglePlusHpt()) gloTrigPat|= 0x2; | |
1050 | if (gloTrg->SinglePlusApt()) gloTrigPat|= 0x4; | |
1051 | ||
1052 | if (gloTrg->SingleMinusLpt()) gloTrigPat|= 0x8; | |
1053 | if (gloTrg->SingleMinusHpt()) gloTrigPat|= 0x10; | |
1054 | if (gloTrg->SingleMinusApt()) gloTrigPat|= 0x20; | |
1055 | ||
1056 | if (gloTrg->SingleUndefLpt()) gloTrigPat|= 0x40; | |
1057 | if (gloTrg->SingleUndefHpt()) gloTrigPat|= 0x80; | |
1058 | if (gloTrg->SingleUndefApt()) gloTrigPat|= 0x100; | |
1059 | ||
1060 | if (gloTrg->PairUnlikeLpt()) gloTrigPat|= 0x200; | |
1061 | if (gloTrg->PairUnlikeHpt()) gloTrigPat|= 0x400; | |
1062 | if (gloTrg->PairUnlikeApt()) gloTrigPat|= 0x800; | |
1063 | ||
1064 | if (gloTrg->PairLikeLpt()) gloTrigPat|= 0x1000; | |
1065 | if (gloTrg->PairLikeHpt()) gloTrigPat|= 0x2000; | |
1066 | if (gloTrg->PairLikeApt()) gloTrigPat|= 0x4000; | |
1067 | ||
52c9bc11 | 1068 | |
1069 | ||
1070 | // local trigger for tracking | |
1071 | localTrigger = fMUONData->LocalTrigger(); | |
276c44b7 | 1072 | Int_t nlocals = (Int_t) (localTrigger->GetEntries()); |
1073 | Float_t z11 = ( &(pMUON->Chamber(10)) )->Z(); | |
1074 | Float_t z21 = ( &(pMUON->Chamber(12)) )->Z(); | |
1075 | ||
1076 | for (Int_t i=0; i<nlocals; i++) { // loop on Local Trigger | |
52c9bc11 | 1077 | locTrg = (AliMUONLocalTrigger*)localTrigger->UncheckedAt(i); |
1078 | circuit = &(pMUON->TriggerCircuit(locTrg->LoCircuit())); | |
1079 | Float_t y11 = circuit->GetY11Pos(locTrg->LoStripX()); | |
aeb4f510 | 1080 | Int_t stripX21 = locTrg->LoStripX()+locTrg->LoDev()+1; |
1081 | Float_t y21 = circuit->GetY21Pos(stripX21); | |
52c9bc11 | 1082 | Float_t x11 = circuit->GetX11Pos(locTrg->LoStripY()); |
1083 | Float_t thetax = TMath::ATan2( x11 , z11 ); | |
1084 | Float_t thetay = TMath::ATan2( (y21-y11) , (z21-z11) ); | |
1085 | ||
1086 | recTriggerTrack = new AliMUONTriggerTrack(x11,y11,thetax,thetay,gloTrigPat,this); | |
1087 | // since static statement does not work, set gloTrigPat for each track | |
1088 | ||
1089 | // fNRecTriggerTracks++; | |
1090 | fMUONData->AddRecTriggerTrack(*recTriggerTrack); | |
276c44b7 | 1091 | } // end of loop on Local Trigger |
d837040f | 1092 | return kTRUE; |
276c44b7 | 1093 | } |
1094 | ||
a9e2aefa | 1095 | //__________________________________________________________________________ |
1096 | Int_t AliMUONEventReconstructor::MakeTrackCandidatesWithTwoSegments(AliMUONSegment *BegSegment) | |
1097 | { | |
1098 | // To make track candidates with two segments in stations(1..) 4 and 5, | |
1099 | // the first segment being pointed to by "BegSegment". | |
1100 | // Returns the number of such track candidates. | |
1101 | Int_t endStation, iEndSegment, nbCan2Seg; | |
1102 | AliMUONSegment *endSegment, *extrapSegment; | |
1103 | AliMUONTrack *recTrack; | |
1104 | Double_t mcsFactor; | |
1105 | if (fPrintLevel >= 1) cout << "enter MakeTrackCandidatesWithTwoSegments" << endl; | |
1106 | // Station for the end segment | |
1107 | endStation = 7 - (BegSegment->GetHitForRec1())->GetChamberNumber() / 2; | |
1108 | // multiple scattering factor corresponding to one chamber | |
1109 | mcsFactor = 0.0136 / | |
1110 | GetBendingMomentumFromImpactParam(BegSegment->GetBendingImpact()); | |
1111 | mcsFactor = fChamberThicknessInX0 * mcsFactor * mcsFactor; | |
1112 | // linear extrapolation to end station | |
1113 | extrapSegment = | |
1114 | BegSegment->CreateSegmentFromLinearExtrapToStation(endStation, mcsFactor); | |
1115 | // number of candidates with 2 segments to 0 | |
1116 | nbCan2Seg = 0; | |
1117 | // Loop over segments in the end station | |
1118 | for (iEndSegment = 0; iEndSegment < fNSegments[endStation]; iEndSegment++) { | |
1119 | // pointer to segment | |
1120 | endSegment = (AliMUONSegment*) ((*fSegmentsPtr[endStation])[iEndSegment]); | |
1121 | // test compatibility between current segment and "extrapSegment" | |
04b5ea16 | 1122 | // 4 because 4 quantities in chi2 |
a9e2aefa | 1123 | if ((endSegment-> |
1124 | NormalizedChi2WithSegment(extrapSegment, | |
1125 | fMaxSigma2Distance)) <= 4.0) { | |
1126 | // both segments compatible: | |
1127 | // make track candidate from "begSegment" and "endSegment" | |
1128 | if (fPrintLevel >= 2) | |
1129 | cout << "TrackCandidate with Segment " << iEndSegment << | |
1130 | " in Station(0..) " << endStation << endl; | |
1131 | // flag for both segments in one track: | |
1132 | // to be done in track constructor ???? | |
1133 | BegSegment->SetInTrack(kTRUE); | |
1134 | endSegment->SetInTrack(kTRUE); | |
1135 | recTrack = new ((*fRecTracksPtr)[fNRecTracks]) | |
1136 | AliMUONTrack(BegSegment, endSegment, this); | |
1137 | fNRecTracks++; | |
1138 | if (fPrintLevel >= 10) recTrack->RecursiveDump(); | |
1139 | // increment number of track candidates with 2 segments | |
1140 | nbCan2Seg++; | |
1141 | } | |
1142 | } // for (iEndSegment = 0;... | |
1143 | delete extrapSegment; // should not delete HitForRec's it points to !!!! | |
1144 | return nbCan2Seg; | |
1145 | } | |
1146 | ||
1147 | //__________________________________________________________________________ | |
1148 | Int_t AliMUONEventReconstructor::MakeTrackCandidatesWithOneSegmentAndOnePoint(AliMUONSegment *BegSegment) | |
1149 | { | |
1150 | // To make track candidates with one segment and one point | |
1151 | // in stations(1..) 4 and 5, | |
1152 | // the segment being pointed to by "BegSegment". | |
1153 | Int_t ch, ch1, ch2, endStation, iHit, iHitMax, iHitMin, nbCan1Seg1Hit; | |
1154 | AliMUONHitForRec *extrapHitForRec, *hit; | |
1155 | AliMUONTrack *recTrack; | |
1156 | Double_t mcsFactor; | |
1157 | if (fPrintLevel >= 1) | |
1158 | cout << "enter MakeTrackCandidatesWithOneSegmentAndOnePoint" << endl; | |
1159 | // station for the end point | |
1160 | endStation = 7 - (BegSegment->GetHitForRec1())->GetChamberNumber() / 2; | |
1161 | // multiple scattering factor corresponding to one chamber | |
1162 | mcsFactor = 0.0136 / | |
1163 | GetBendingMomentumFromImpactParam(BegSegment->GetBendingImpact()); | |
1164 | mcsFactor = fChamberThicknessInX0 * mcsFactor * mcsFactor; | |
1165 | // first and second chambers(0..) in the end station | |
1166 | ch1 = 2 * endStation; | |
1167 | ch2 = ch1 + 1; | |
1168 | // number of candidates to 0 | |
1169 | nbCan1Seg1Hit = 0; | |
1170 | // Loop over chambers of the end station | |
1171 | for (ch = ch2; ch >= ch1; ch--) { | |
1172 | // linear extrapolation to chamber | |
1173 | extrapHitForRec = | |
1174 | BegSegment->CreateHitForRecFromLinearExtrapToChamber(ch, mcsFactor); | |
1175 | // limits for the hit index in the loop | |
1176 | iHitMin = fIndexOfFirstHitForRecPerChamber[ch]; | |
1177 | iHitMax = iHitMin + fNHitsForRecPerChamber[ch]; | |
1178 | // Loop over HitForRec's in the chamber | |
1179 | for (iHit = iHitMin; iHit < iHitMax; iHit++) { | |
1180 | // pointer to HitForRec | |
1181 | hit = (AliMUONHitForRec*) ((*fHitsForRecPtr)[iHit]); | |
1182 | // test compatibility between current HitForRec and "extrapHitForRec" | |
04b5ea16 | 1183 | // 2 because 2 quantities in chi2 |
a9e2aefa | 1184 | if ((hit-> |
1185 | NormalizedChi2WithHitForRec(extrapHitForRec, | |
1186 | fMaxSigma2Distance)) <= 2.0) { | |
1187 | // both HitForRec's compatible: | |
1188 | // make track candidate from begSegment and current HitForRec | |
1189 | if (fPrintLevel >= 2) | |
1190 | cout << "TrackCandidate with HitForRec " << iHit << | |
1191 | " in Chamber(0..) " << ch << endl; | |
1192 | // flag for beginning segments in one track: | |
1193 | // to be done in track constructor ???? | |
1194 | BegSegment->SetInTrack(kTRUE); | |
1195 | recTrack = new ((*fRecTracksPtr)[fNRecTracks]) | |
1196 | AliMUONTrack(BegSegment, hit, this); | |
1197 | // the right place to eliminate "double counting" ???? how ???? | |
1198 | fNRecTracks++; | |
1199 | if (fPrintLevel >= 10) recTrack->RecursiveDump(); | |
1200 | // increment number of track candidates | |
1201 | nbCan1Seg1Hit++; | |
1202 | } | |
1203 | } // for (iHit = iHitMin;... | |
1204 | delete extrapHitForRec; | |
1205 | } // for (ch = ch2;... | |
1206 | return nbCan1Seg1Hit; | |
1207 | } | |
1208 | ||
1209 | //__________________________________________________________________________ | |
1210 | void AliMUONEventReconstructor::MakeTrackCandidates(void) | |
1211 | { | |
1212 | // To make track candidates | |
1213 | // with at least 3 aligned points in stations(1..) 4 and 5 | |
1214 | // (two Segment's or one Segment and one HitForRec) | |
1215 | Int_t begStation, iBegSegment, nbCan1Seg1Hit, nbCan2Seg; | |
1216 | AliMUONSegment *begSegment; | |
1217 | if (fPrintLevel >= 1) cout << "enter MakeTrackCandidates" << endl; | |
1218 | // Loop over stations(1..) 5 and 4 for the beginning segment | |
1219 | for (begStation = 4; begStation > 2; begStation--) { | |
1220 | // Loop over segments in the beginning station | |
1221 | for (iBegSegment = 0; iBegSegment < fNSegments[begStation]; iBegSegment++) { | |
1222 | // pointer to segment | |
1223 | begSegment = (AliMUONSegment*) ((*fSegmentsPtr[begStation])[iBegSegment]); | |
1224 | if (fPrintLevel >= 2) | |
1225 | cout << "look for TrackCandidate's with Segment " << iBegSegment << | |
1226 | " in Station(0..) " << begStation << endl; | |
1227 | // Look for track candidates with two segments, | |
1228 | // "begSegment" and all compatible segments in other station. | |
1229 | // Only for beginning station(1..) 5 | |
1230 | // because candidates with 2 segments have to looked for only once. | |
1231 | if (begStation == 4) | |
1232 | nbCan2Seg = MakeTrackCandidatesWithTwoSegments(begSegment); | |
956019b6 | 1233 | // Look for track candidates with one segment and one point, |
a9e2aefa | 1234 | // "begSegment" and all compatible HitForRec's in other station. |
1235 | // Only if "begSegment" does not belong already to a track candidate. | |
1236 | // Is that a too strong condition ???? | |
1237 | if (!(begSegment->GetInTrack())) | |
1238 | nbCan1Seg1Hit = MakeTrackCandidatesWithOneSegmentAndOnePoint(begSegment); | |
1239 | } // for (iBegSegment = 0;... | |
1240 | } // for (begStation = 4;... | |
1241 | return; | |
1242 | } | |
1243 | ||
1244 | //__________________________________________________________________________ | |
1245 | void AliMUONEventReconstructor::FollowTracks(void) | |
1246 | { | |
1247 | // Follow tracks in stations(1..) 3, 2 and 1 | |
04b5ea16 | 1248 | // too long: should be made more modular !!!! |
d0bfce8d | 1249 | AliMUONHitForRec *bestHit, *extrapHit, *extrapCorrHit, *hit; |
1250 | AliMUONSegment *bestSegment, *extrapSegment, *extrapCorrSegment, *segment; | |
04b5ea16 | 1251 | AliMUONTrack *track, *nextTrack; |
1252 | AliMUONTrackParam *trackParam1, trackParam[2], trackParamVertex; | |
ecfa008b | 1253 | // -1 to avoid compilation warnings |
1254 | Int_t ch = -1, chInStation, chBestHit = -1, iHit, iSegment, station, trackIndex; | |
04b5ea16 | 1255 | Double_t bestChi2, chi2, dZ1, dZ2, dZ3, maxSigma2Distance, mcsFactor; |
d0bfce8d | 1256 | Double_t bendingMomentum, chi2Norm = 0.; |
9cbdf048 | 1257 | AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? |
04b5ea16 | 1258 | // local maxSigma2Distance, for easy increase in testing |
1259 | maxSigma2Distance = fMaxSigma2Distance; | |
a9e2aefa | 1260 | if (fPrintLevel >= 2) |
1261 | cout << "enter FollowTracks" << endl; | |
1262 | // Loop over track candidates | |
04b5ea16 | 1263 | track = (AliMUONTrack*) fRecTracksPtr->First(); |
1264 | trackIndex = -1; | |
1265 | while (track) { | |
1266 | // Follow function for each track candidate ???? | |
1267 | trackIndex++; | |
1268 | nextTrack = (AliMUONTrack*) fRecTracksPtr->After(track); // prepare next track | |
a9e2aefa | 1269 | if (fPrintLevel >= 2) |
1270 | cout << "FollowTracks: track candidate(0..): " << trackIndex << endl; | |
956019b6 | 1271 | // Fit track candidate |
1272 | track->SetFitMCS(0); // without multiple Coulomb scattering | |
1273 | track->SetFitNParam(3); // with 3 parameters (X = Y = 0) | |
1274 | track->SetFitStart(0); // from parameters at vertex | |
1275 | track->Fit(); | |
a9e2aefa | 1276 | if (fPrintLevel >= 10) { |
1277 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
956019b6 | 1278 | << " after fit in stations(0..) 3 and 4" << endl; |
a9e2aefa | 1279 | track->RecursiveDump(); |
1280 | } | |
1281 | // Loop over stations(1..) 3, 2 and 1 | |
04b5ea16 | 1282 | // something SPECIAL for stations 2 and 1 for majority 3 coincidence ???? |
1283 | // otherwise: majority coincidence 2 !!!! | |
a9e2aefa | 1284 | for (station = 2; station >= 0; station--) { |
1285 | // Track parameters at first track hit (smallest Z) | |
1286 | trackParam1 = ((AliMUONTrackHit*) | |
1287 | (track->GetTrackHitsPtr()->First()))->GetTrackParam(); | |
1288 | // extrapolation to station | |
1289 | trackParam1->ExtrapToStation(station, trackParam); | |
79e1e601 | 1290 | extrapSegment = new AliMUONSegment(); // empty segment |
d0bfce8d | 1291 | extrapCorrSegment = new AliMUONSegment(); // empty corrected segment |
a9e2aefa | 1292 | // multiple scattering factor corresponding to one chamber |
1293 | // and momentum in bending plane (not total) | |
1294 | mcsFactor = 0.0136 * trackParam1->GetInverseBendingMomentum(); | |
1295 | mcsFactor = fChamberThicknessInX0 * mcsFactor * mcsFactor; | |
1296 | // Z difference from previous station | |
9cbdf048 | 1297 | dZ1 = (&(pMUON->Chamber(2 * station)))->Z() - |
1298 | (&(pMUON->Chamber(2 * station + 2)))->Z(); | |
a9e2aefa | 1299 | // Z difference between the two previous stations |
9cbdf048 | 1300 | dZ2 = (&(pMUON->Chamber(2 * station + 2)))->Z() - |
1301 | (&(pMUON->Chamber(2 * station + 4)))->Z(); | |
04b5ea16 | 1302 | // Z difference between the two chambers in the previous station |
1303 | dZ3 = (&(pMUON->Chamber(2 * station)))->Z() - | |
1304 | (&(pMUON->Chamber(2 * station + 1)))->Z(); | |
1305 | extrapSegment->SetBendingCoorReso2(fBendingResolution * fBendingResolution); | |
1306 | extrapSegment-> | |
1307 | SetNonBendingCoorReso2(fNonBendingResolution * fNonBendingResolution); | |
1308 | extrapSegment->UpdateFromStationTrackParam | |
1309 | (trackParam, mcsFactor, dZ1, dZ2, dZ3, station, | |
1310 | trackParam1->GetInverseBendingMomentum()); | |
d0bfce8d | 1311 | // same thing for corrected segment |
1312 | // better to use copy constructor, after checking that it works properly !!!! | |
1313 | extrapCorrSegment->SetBendingCoorReso2(fBendingResolution * fBendingResolution); | |
1314 | extrapCorrSegment-> | |
1315 | SetNonBendingCoorReso2(fNonBendingResolution * fNonBendingResolution); | |
1316 | extrapCorrSegment->UpdateFromStationTrackParam | |
1317 | (trackParam, mcsFactor, dZ1, dZ2, dZ3, station, | |
1318 | trackParam1->GetInverseBendingMomentum()); | |
a9e2aefa | 1319 | bestChi2 = 5.0; |
1320 | bestSegment = NULL; | |
1321 | if (fPrintLevel >= 10) { | |
1322 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1323 | << " Look for segment in station(0..): " << station << endl; | |
1324 | } | |
1325 | // Loop over segments in station | |
1326 | for (iSegment = 0; iSegment < fNSegments[station]; iSegment++) { | |
1327 | // Look for best compatible Segment in station | |
1328 | // should consider all possibilities ???? | |
1329 | // multiple scattering ???? | |
1330 | // separation in 2 functions: Segment and HitForRec ???? | |
1331 | segment = (AliMUONSegment*) ((*fSegmentsPtr[station])[iSegment]); | |
d0bfce8d | 1332 | // correction of corrected segment (fBendingCoor and fNonBendingCoor) |
1333 | // according to real Z value of "segment" and slopes of "extrapSegment" | |
1334 | extrapCorrSegment-> | |
1335 | SetBendingCoor(extrapSegment->GetBendingCoor() + | |
1336 | extrapSegment->GetBendingSlope() * | |
1337 | (segment->GetHitForRec1()->GetZ() - | |
1338 | (&(pMUON->Chamber(2 * station)))->Z())); | |
1339 | extrapCorrSegment-> | |
1340 | SetNonBendingCoor(extrapSegment->GetNonBendingCoor() + | |
1341 | extrapSegment->GetNonBendingSlope() * | |
1342 | (segment->GetHitForRec1()->GetZ() - | |
1343 | (&(pMUON->Chamber(2 * station)))->Z())); | |
1344 | chi2 = segment-> | |
1345 | NormalizedChi2WithSegment(extrapCorrSegment, maxSigma2Distance); | |
a9e2aefa | 1346 | if (chi2 < bestChi2) { |
1347 | // update best Chi2 and Segment if better found | |
1348 | bestSegment = segment; | |
1349 | bestChi2 = chi2; | |
1350 | } | |
1351 | } | |
1352 | if (bestSegment) { | |
1353 | // best segment found: add it to track candidate | |
1354 | track->AddSegment(bestSegment); | |
1355 | // set track parameters at these two TrakHit's | |
1356 | track->SetTrackParamAtHit(track->GetNTrackHits() - 2, &(trackParam[0])); | |
1357 | track->SetTrackParamAtHit(track->GetNTrackHits() - 1, &(trackParam[1])); | |
1358 | if (fPrintLevel >= 10) { | |
1359 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1360 | << " Added segment in station(0..): " << station << endl; | |
1361 | track->RecursiveDump(); | |
1362 | } | |
1363 | } | |
1364 | else { | |
1365 | // No best segment found: | |
1366 | // Look for best compatible HitForRec in station: | |
1367 | // should consider all possibilities ???? | |
1368 | // multiple scattering ???? do about like for extrapSegment !!!! | |
79e1e601 | 1369 | extrapHit = new AliMUONHitForRec(); // empty hit |
d0bfce8d | 1370 | extrapCorrHit = new AliMUONHitForRec(); // empty corrected hit |
a9e2aefa | 1371 | bestChi2 = 3.0; |
1372 | bestHit = NULL; | |
1373 | if (fPrintLevel >= 10) { | |
1374 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1375 | << " Segment not found, look for hit in station(0..): " << station | |
1376 | << endl; | |
1377 | } | |
1378 | // Loop over chambers of the station | |
d82671a0 | 1379 | for (chInStation = 0; chInStation < 2; chInStation++) { |
a9e2aefa | 1380 | // coordinates of extrapolated hit |
d82671a0 | 1381 | extrapHit-> |
1382 | SetBendingCoor((&(trackParam[chInStation]))->GetBendingCoor()); | |
1383 | extrapHit-> | |
1384 | SetNonBendingCoor((&(trackParam[chInStation]))->GetNonBendingCoor()); | |
a9e2aefa | 1385 | // resolutions from "extrapSegment" |
1386 | extrapHit->SetBendingReso2(extrapSegment->GetBendingCoorReso2()); | |
1387 | extrapHit->SetNonBendingReso2(extrapSegment->GetNonBendingCoorReso2()); | |
d0bfce8d | 1388 | // same things for corrected hit |
1389 | // better to use copy constructor, after checking that it works properly !!!! | |
1390 | extrapCorrHit-> | |
1391 | SetBendingCoor((&(trackParam[chInStation]))->GetBendingCoor()); | |
1392 | extrapCorrHit-> | |
1393 | SetNonBendingCoor((&(trackParam[chInStation]))->GetNonBendingCoor()); | |
1394 | extrapHit->SetBendingReso2(extrapSegment->GetBendingCoorReso2()); | |
1395 | extrapHit->SetNonBendingReso2(extrapSegment->GetNonBendingCoorReso2()); | |
a9e2aefa | 1396 | // Loop over hits in the chamber |
956019b6 | 1397 | ch = 2 * station + chInStation; |
a9e2aefa | 1398 | for (iHit = fIndexOfFirstHitForRecPerChamber[ch]; |
1399 | iHit < fIndexOfFirstHitForRecPerChamber[ch] + | |
1400 | fNHitsForRecPerChamber[ch]; | |
1401 | iHit++) { | |
1402 | hit = (AliMUONHitForRec*) ((*fHitsForRecPtr)[iHit]); | |
d0bfce8d | 1403 | // correction of corrected hit (fBendingCoor and fNonBendingCoor) |
1404 | // according to real Z value of "hit" and slopes of right "trackParam" | |
1405 | extrapCorrHit-> | |
1406 | SetBendingCoor((&(trackParam[chInStation]))->GetBendingCoor() + | |
1407 | (&(trackParam[chInStation]))->GetBendingSlope() * | |
1408 | (hit->GetZ() - | |
1409 | (&(trackParam[chInStation]))->GetZ())); | |
1410 | extrapCorrHit-> | |
1411 | SetNonBendingCoor((&(trackParam[chInStation]))->GetNonBendingCoor() + | |
1412 | (&(trackParam[chInStation]))->GetNonBendingSlope() * | |
1413 | (hit->GetZ() - | |
1414 | (&(trackParam[chInStation]))->GetZ())); | |
a9e2aefa | 1415 | // condition for hit not already in segment ???? |
1416 | chi2 = hit->NormalizedChi2WithHitForRec(extrapHit, maxSigma2Distance); | |
1417 | if (chi2 < bestChi2) { | |
1418 | // update best Chi2 and HitForRec if better found | |
1419 | bestHit = hit; | |
1420 | bestChi2 = chi2; | |
d82671a0 | 1421 | chBestHit = chInStation; |
a9e2aefa | 1422 | } |
1423 | } | |
1424 | } | |
1425 | if (bestHit) { | |
1426 | // best hit found: add it to track candidate | |
1427 | track->AddHitForRec(bestHit); | |
956019b6 | 1428 | // set track parameters at this TrackHit |
a9e2aefa | 1429 | track->SetTrackParamAtHit(track->GetNTrackHits() - 1, |
1430 | &(trackParam[chBestHit])); | |
1431 | if (fPrintLevel >= 10) { | |
1432 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1433 | << " Added hit in station(0..): " << station << endl; | |
1434 | track->RecursiveDump(); | |
1435 | } | |
1436 | } | |
1437 | else { | |
8429a5e4 | 1438 | // Remove current track candidate |
1439 | // and corresponding TrackHit's, ... | |
1440 | track->Remove(); | |
04b5ea16 | 1441 | delete extrapSegment; |
d0bfce8d | 1442 | delete extrapCorrSegment; |
1443 | delete extrapHit; | |
1444 | delete extrapCorrHit; | |
a9e2aefa | 1445 | break; // stop the search for this candidate: |
1446 | // exit from the loop over station | |
1447 | } | |
d0bfce8d | 1448 | delete extrapHit; |
1449 | delete extrapCorrHit; | |
a9e2aefa | 1450 | } |
04b5ea16 | 1451 | delete extrapSegment; |
d0bfce8d | 1452 | delete extrapCorrSegment; |
a9e2aefa | 1453 | // Sort track hits according to increasing Z |
1454 | track->GetTrackHitsPtr()->Sort(); | |
1455 | // Update track parameters at first track hit (smallest Z) | |
1456 | trackParam1 = ((AliMUONTrackHit*) | |
1457 | (track->GetTrackHitsPtr()->First()))->GetTrackParam(); | |
d0bfce8d | 1458 | bendingMomentum = 0.; |
1459 | if (TMath::Abs(trackParam1->GetInverseBendingMomentum()) > 0.) | |
1460 | bendingMomentum = TMath::Abs(1/(trackParam1->GetInverseBendingMomentum())); | |
1461 | // Track removed if bendingMomentum not in window [min, max] | |
1462 | if ((bendingMomentum < fMinBendingMomentum) || (bendingMomentum > fMaxBendingMomentum)) { | |
1463 | track->Remove(); | |
1464 | break; // stop the search for this candidate: | |
1465 | // exit from the loop over station | |
1466 | } | |
956019b6 | 1467 | // Track fit |
04b5ea16 | 1468 | // with multiple Coulomb scattering if all stations |
1469 | if (station == 0) track->SetFitMCS(1); | |
956019b6 | 1470 | // without multiple Coulomb scattering if not all stations |
04b5ea16 | 1471 | else track->SetFitMCS(0); |
956019b6 | 1472 | track->SetFitNParam(5); // with 5 parameters (momentum and position) |
1473 | track->SetFitStart(1); // from parameters at first hit | |
1474 | track->Fit(); | |
d0bfce8d | 1475 | Double_t numberOfDegFree = (2.0 * track->GetNTrackHits() - 5); |
1476 | if (numberOfDegFree > 0) { | |
1477 | chi2Norm = track->GetFitFMin() / numberOfDegFree; | |
1478 | } else { | |
1479 | chi2Norm = 1.e10; | |
1480 | } | |
1481 | // Track removed if normalized chi2 too high | |
1482 | if (chi2Norm > fMaxChi2) { | |
1483 | track->Remove(); | |
1484 | break; // stop the search for this candidate: | |
1485 | // exit from the loop over station | |
1486 | } | |
a9e2aefa | 1487 | if (fPrintLevel >= 10) { |
1488 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1489 | << " after fit from station(0..): " << station << " to 4" << endl; | |
1490 | track->RecursiveDump(); | |
1491 | } | |
04b5ea16 | 1492 | // Track extrapolation to the vertex through the absorber (Branson) |
956019b6 | 1493 | // after going through the first station |
04b5ea16 | 1494 | if (station == 0) { |
1495 | trackParamVertex = *trackParam1; | |
1496 | (&trackParamVertex)->ExtrapToVertex(); | |
1497 | track->SetTrackParamAtVertex(&trackParamVertex); | |
6ae236ee | 1498 | if (fPrintLevel >= 1) { |
1499 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1500 | << " after extrapolation to vertex" << endl; | |
1501 | track->RecursiveDump(); | |
1502 | } | |
04b5ea16 | 1503 | } |
a9e2aefa | 1504 | } // for (station = 2;... |
04b5ea16 | 1505 | // go really to next track |
1506 | track = nextTrack; | |
1507 | } // while (track) | |
1508 | // Compression of track array (necessary after Remove ????) | |
1509 | fRecTracksPtr->Compress(); | |
1510 | return; | |
1511 | } | |
1512 | ||
1513 | //__________________________________________________________________________ | |
8429a5e4 | 1514 | void AliMUONEventReconstructor::RemoveDoubleTracks(void) |
1515 | { | |
1516 | // To remove double tracks. | |
1517 | // Tracks are considered identical | |
1518 | // if they have at least half of their hits in common. | |
1519 | // Among two identical tracks, one keeps the track with the larger number of hits | |
1520 | // or, if these numbers are equal, the track with the minimum Chi2. | |
1521 | AliMUONTrack *track1, *track2, *trackToRemove; | |
1522 | Bool_t identicalTracks; | |
1523 | Int_t hitsInCommon, nHits1, nHits2; | |
1524 | identicalTracks = kTRUE; | |
1525 | while (identicalTracks) { | |
1526 | identicalTracks = kFALSE; | |
1527 | // Loop over first track of the pair | |
1528 | track1 = (AliMUONTrack*) fRecTracksPtr->First(); | |
1529 | while (track1 && (!identicalTracks)) { | |
1530 | nHits1 = track1->GetNTrackHits(); | |
1531 | // Loop over second track of the pair | |
1532 | track2 = (AliMUONTrack*) fRecTracksPtr->After(track1); | |
1533 | while (track2 && (!identicalTracks)) { | |
1534 | nHits2 = track2->GetNTrackHits(); | |
1535 | // number of hits in common between two tracks | |
1536 | hitsInCommon = track1->HitsInCommon(track2); | |
1537 | // check for identical tracks | |
1538 | if ((4 * hitsInCommon) >= (nHits1 + nHits2)) { | |
1539 | identicalTracks = kTRUE; | |
1540 | // decide which track to remove | |
1541 | if (nHits1 > nHits2) trackToRemove = track2; | |
1542 | else if (nHits1 < nHits2) trackToRemove = track1; | |
1543 | else if ((track1->GetFitFMin()) < (track2->GetFitFMin())) | |
1544 | trackToRemove = track2; | |
1545 | else trackToRemove = track1; | |
1546 | // remove it | |
1547 | trackToRemove->Remove(); | |
1548 | } | |
1549 | track2 = (AliMUONTrack*) fRecTracksPtr->After(track2); | |
1550 | } // track2 | |
1551 | track1 = (AliMUONTrack*) fRecTracksPtr->After(track1); | |
1552 | } // track1 | |
1553 | } | |
1554 | return; | |
1555 | } | |
1556 | ||
d837040f | 1557 | //__________________________________________________________________________ |
1558 | void AliMUONEventReconstructor::UpdateTrackParamAtHit() | |
1559 | { | |
1560 | // Set track parameters after track fitting. Fill fTrackParamAtHit of AliMUONTrack's | |
1561 | AliMUONTrack *track; | |
1562 | AliMUONTrackHit *trackHit; | |
1563 | AliMUONTrackParam *trackParam; | |
1564 | track = (AliMUONTrack*) fRecTracksPtr->First(); | |
1565 | while (track) { | |
1566 | trackHit = (AliMUONTrackHit*) (track->GetTrackHitsPtr())->First(); | |
1567 | while (trackHit) { | |
1568 | trackParam = trackHit->GetTrackParam(); | |
1569 | track->AddTrackParamAtHit(trackParam); | |
1570 | trackHit = (AliMUONTrackHit*) (track->GetTrackHitsPtr())->After(trackHit); | |
1571 | } // trackHit | |
1572 | track = (AliMUONTrack*) fRecTracksPtr->After(track); | |
1573 | } // track | |
1574 | return; | |
1575 | } | |
1576 | ||
8429a5e4 | 1577 | //__________________________________________________________________________ |
04b5ea16 | 1578 | void AliMUONEventReconstructor::EventDump(void) |
1579 | { | |
1580 | // Dump reconstructed event (track parameters at vertex and at first hit), | |
1581 | // and the particle parameters | |
1582 | ||
1583 | AliMUONTrack *track; | |
1584 | AliMUONTrackParam *trackParam, *trackParam1; | |
04b5ea16 | 1585 | Double_t bendingSlope, nonBendingSlope, pYZ; |
1586 | Double_t pX, pY, pZ, x, y, z, c; | |
1587 | Int_t np, trackIndex, nTrackHits; | |
1588 | ||
1589 | if (fPrintLevel >= 1) cout << "****** enter EventDump ******" << endl; | |
1590 | if (fPrintLevel >= 1) { | |
1591 | cout << " Number of Reconstructed tracks :" << fNRecTracks << endl; | |
1592 | } | |
1593 | fRecTracksPtr->Compress(); // for simple loop without "Next" since no hole | |
1594 | // Loop over reconstructed tracks | |
1595 | for (trackIndex = 0; trackIndex < fNRecTracks; trackIndex++) { | |
83dbc640 | 1596 | if (fTrackMethod != 1) continue; //AZ - skip the rest for now |
04b5ea16 | 1597 | if (fPrintLevel >= 1) |
1598 | cout << " track number: " << trackIndex << endl; | |
1599 | // function for each track for modularity ???? | |
1600 | track = (AliMUONTrack*) ((*fRecTracksPtr)[trackIndex]); | |
1601 | nTrackHits = track->GetNTrackHits(); | |
1602 | if (fPrintLevel >= 1) | |
1603 | cout << " number of track hits: " << nTrackHits << endl; | |
1604 | // track parameters at Vertex | |
1605 | trackParam = track->GetTrackParamAtVertex(); | |
1606 | x = trackParam->GetNonBendingCoor(); | |
1607 | y = trackParam->GetBendingCoor(); | |
1608 | z = trackParam->GetZ(); | |
1609 | bendingSlope = trackParam->GetBendingSlope(); | |
1610 | nonBendingSlope = trackParam->GetNonBendingSlope(); | |
1611 | pYZ = 1/TMath::Abs(trackParam->GetInverseBendingMomentum()); | |
1612 | pZ = pYZ/TMath::Sqrt(1+bendingSlope*bendingSlope); | |
1613 | pX = pZ * nonBendingSlope; | |
1614 | pY = pZ * bendingSlope; | |
1615 | c = TMath::Sign(1.0, trackParam->GetInverseBendingMomentum()); | |
1616 | if (fPrintLevel >= 1) | |
1617 | printf(" track parameters at Vertex z= %f: X= %f Y= %f pX= %f pY= %f pZ= %f c= %f\n", | |
1618 | z, x, y, pX, pY, pZ, c); | |
1619 | ||
1620 | // track parameters at first hit | |
1621 | trackParam1 = ((AliMUONTrackHit*) | |
1622 | (track->GetTrackHitsPtr()->First()))->GetTrackParam(); | |
1623 | x = trackParam1->GetNonBendingCoor(); | |
1624 | y = trackParam1->GetBendingCoor(); | |
1625 | z = trackParam1->GetZ(); | |
1626 | bendingSlope = trackParam1->GetBendingSlope(); | |
1627 | nonBendingSlope = trackParam1->GetNonBendingSlope(); | |
1628 | pYZ = 1/TMath::Abs(trackParam1->GetInverseBendingMomentum()); | |
1629 | pZ = pYZ/TMath::Sqrt(1.0 + bendingSlope * bendingSlope); | |
1630 | pX = pZ * nonBendingSlope; | |
1631 | pY = pZ * bendingSlope; | |
1632 | c = TMath::Sign(1.0, trackParam1->GetInverseBendingMomentum()); | |
1633 | if (fPrintLevel >= 1) | |
1634 | printf(" track parameters at z= %f: X= %f Y= %f pX= %f pY= %f pZ= %f c= %f\n", | |
1635 | z, x, y, pX, pY, pZ, c); | |
1636 | } | |
1637 | // informations about generated particles | |
5d12ce38 | 1638 | np = gAlice->GetMCApp()->GetNtrack(); |
04b5ea16 | 1639 | printf(" **** number of generated particles: %d \n", np); |
1640 | ||
88cb7938 | 1641 | // for (Int_t iPart = 0; iPart < np; iPart++) { |
1642 | // p = gAlice->Particle(iPart); | |
1643 | // printf(" particle %d: type= %d px= %f py= %f pz= %f pdg= %d\n", | |
1644 | // iPart, p->GetPdgCode(), p->Px(), p->Py(), p->Pz(), p->GetPdgCode()); | |
1645 | // } | |
a9e2aefa | 1646 | return; |
1647 | } | |
1648 | ||
276c44b7 | 1649 | |
1650 | //__________________________________________________________________________ | |
1651 | void AliMUONEventReconstructor::EventDumpTrigger(void) | |
1652 | { | |
1653 | // Dump reconstructed trigger event | |
1654 | // and the particle parameters | |
1655 | ||
52c9bc11 | 1656 | AliMUONTriggerTrack *triggertrack ; |
1657 | Int_t nTriggerTracks = fMUONData->RecTriggerTracks()->GetEntriesFast(); | |
276c44b7 | 1658 | |
276c44b7 | 1659 | if (fPrintLevel >= 1) { |
52c9bc11 | 1660 | cout << "****** enter EventDumpTrigger ******" << endl; |
1661 | cout << " Number of Reconstructed tracks :" << nTriggerTracks << endl; | |
276c44b7 | 1662 | } |
1663 | // Loop over reconstructed tracks | |
52c9bc11 | 1664 | for (Int_t trackIndex = 0; trackIndex < nTriggerTracks; trackIndex++) { |
1665 | triggertrack = (AliMUONTriggerTrack*)fMUONData->RecTriggerTracks()->At(trackIndex); | |
276c44b7 | 1666 | printf(" trigger track number %i x11=%f y11=%f thetax=%f thetay=%f \n", |
1667 | trackIndex, | |
1668 | triggertrack->GetX11(),triggertrack->GetY11(), | |
1669 | triggertrack->GetThetax(),triggertrack->GetThetay()); | |
1670 | } | |
1671 | } | |
1672 | ||
1673 | //__________________________________________________________________________ | |
c7ba256d | 1674 | void AliMUONEventReconstructor::FillEvent() |
1675 | { | |
1676 | // Create a new AliMUONRecoEvent, fill its track list, then add it as a | |
1677 | // leaf in the Event branch of TreeRecoEvent tree | |
1678 | cout << "Enter FillEvent() ...\n"; | |
1679 | ||
1680 | if (!fRecoEvent) { | |
1681 | fRecoEvent = new AliMUONRecoEvent(); | |
1682 | } else { | |
1683 | fRecoEvent->Clear(); | |
1684 | } | |
1685 | //save current directory | |
1686 | TDirectory *current = gDirectory; | |
1687 | if (!fTreeFile) fTreeFile = new TFile("tree_reco.root", "RECREATE"); | |
1688 | if (!fEventTree) fEventTree = new TTree("TreeRecoEvent", "MUON reconstructed events"); | |
83dbc640 | 1689 | //AZif (fRecoEvent->MakeDumpTracks(fRecTracksPtr)) { |
1690 | if (fRecoEvent->MakeDumpTracks(fMuons, fRecTracksPtr, this)) { //AZ | |
c7ba256d | 1691 | if (fPrintLevel > 1) fRecoEvent->EventInfo(); |
1692 | TBranch *branch = fEventTree->GetBranch("Event"); | |
d0f40f23 | 1693 | if (!branch) branch = fEventTree->Branch("Event", "AliMUONRecoEvent", &fRecoEvent, 64000); |
c7ba256d | 1694 | branch->SetAutoDelete(); |
1695 | fTreeFile->cd(); | |
1696 | fEventTree->Fill(); | |
1697 | fTreeFile->Write(); | |
1698 | } | |
1699 | // restore directory | |
1700 | current->cd(); | |
1701 | } | |
83dbc640 | 1702 | |
1703 | //__________________________________________________________________________ | |
1704 | void AliMUONEventReconstructor::MakeTrackCandidatesK(void) | |
1705 | { | |
1706 | // To make initial tracks for Kalman filter from the list of segments | |
1707 | Int_t istat, iseg; | |
1708 | AliMUONSegment *segment; | |
1709 | AliMUONTrackK *trackK; | |
1710 | ||
1711 | if (fPrintLevel >= 1) cout << "enter MakeTrackCandidatesK" << endl; | |
1712 | // Reset the TClonesArray of reconstructed tracks | |
1713 | if (fRecTracksPtr) fRecTracksPtr->Delete(); | |
1714 | // Delete in order that the Track destructors are called, | |
1715 | // hence the space for the TClonesArray of pointers to TrackHit's is freed | |
1716 | fNRecTracks = 0; | |
1717 | ||
1718 | AliMUONTrackK a(this, fHitsForRecPtr); // bad idea ??? | |
1719 | // Loop over stations(1...) 5 and 4 | |
1720 | for (istat=4; istat>=3; istat--) { | |
1721 | // Loop over segments in the station | |
1722 | for (iseg=0; iseg<fNSegments[istat]; iseg++) { | |
1723 | // Transform segments to tracks and evaluate covariance matrix | |
1724 | segment = (AliMUONSegment*) ((*fSegmentsPtr[istat])[iseg]); | |
1725 | trackK = new ((*fRecTracksPtr)[fNRecTracks]) AliMUONTrackK(segment); | |
1726 | fNRecTracks++; | |
1727 | } // for (iseg=0;...) | |
1728 | } // for (istat=4;...) | |
1729 | return; | |
1730 | } | |
1731 | ||
1732 | //__________________________________________________________________________ | |
1733 | void AliMUONEventReconstructor::FollowTracksK(void) | |
1734 | { | |
1735 | // Follow tracks using Kalman filter | |
1736 | Bool_t Ok; | |
1737 | Int_t icand, ichamBeg, ichamEnd, chamBits; | |
1738 | Double_t zDipole1, zDipole2; | |
1739 | AliMUONTrackK *trackK; | |
1740 | AliMUONHitForRec *hit; | |
1741 | AliMUONRawCluster *clus; | |
1742 | TClonesArray *rawclusters; | |
1743 | AliMUON *pMUON; | |
1744 | clus = 0; rawclusters = 0; | |
1745 | ||
1746 | zDipole1 = GetSimpleBPosition() - GetSimpleBLength()/2; | |
1747 | zDipole2 = zDipole1 + GetSimpleBLength(); | |
1748 | ||
1749 | // Print hits | |
1750 | pMUON = (AliMUON*) gAlice->GetModule("MUON"); | |
1751 | for (Int_t i1=0; i1<fNHitsForRec; i1++) { | |
1752 | hit = (AliMUONHitForRec*) ((*fHitsForRecPtr)[i1]); | |
1753 | //if (hit->GetTHTrack() > 1 || hit->GetGeantSignal() == 0) continue; | |
1754 | /* | |
1755 | cout << " Hit #" << hit->GetChamberNumber() << " "; | |
1756 | cout << hit->GetBendingCoor() << " "; | |
1757 | cout << hit->GetNonBendingCoor() << " "; | |
1758 | cout << hit->GetZ() << " "; | |
1759 | cout << hit->GetGeantSignal() << " "; | |
1760 | cout << hit->GetTHTrack() << endl; | |
1761 | */ | |
1762 | /* | |
1763 | printf(" Hit # %d %10.4f %10.4f %10.4f", | |
1764 | hit->GetChamberNumber(), hit->GetBendingCoor(), | |
1765 | hit->GetNonBendingCoor(), hit->GetZ()); | |
1766 | if (fRecGeantHits) { | |
1767 | // from GEANT hits | |
1768 | printf(" %3d %3d \n", hit->GetGeantSignal(), hit->GetTHTrack()); | |
1769 | } else { | |
1770 | // from raw clusters | |
1771 | rawclusters = pMUON->RawClustAddress(hit->GetChamberNumber()); | |
1772 | clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(hit-> | |
1773 | GetHitNumber()); | |
1774 | printf("%3d", clus->fTracks[1]-1); | |
1775 | if (clus->fTracks[2] != 0) printf("%3d \n", clus->fTracks[2]-1); | |
1776 | else printf("\n"); | |
1777 | } | |
1778 | */ | |
1779 | } | |
1780 | ||
1781 | icand = -1; | |
1782 | Int_t nSeeds = fNRecTracks; // starting number of seeds | |
1783 | // Loop over track candidates | |
1784 | while (icand < fNRecTracks-1) { | |
1785 | icand ++; | |
1786 | trackK = (AliMUONTrackK*) ((*fRecTracksPtr)[icand]); | |
1787 | ||
1788 | // Discard candidate which will produce the double track | |
1789 | if (icand > 0) { | |
1790 | Ok = CheckCandidateK(icand,nSeeds); | |
1791 | if (!Ok) { | |
1792 | //trackK->SetRecover(-1); // mark candidate to be removed | |
1793 | //continue; | |
1794 | } | |
1795 | } | |
1796 | ||
1797 | Ok = kTRUE; | |
1798 | if (trackK->GetRecover() == 0) hit = (AliMUONHitForRec*) | |
1799 | trackK->GetHitOnTrack()->Last(); // last hit | |
1800 | else hit = (AliMUONHitForRec*) (*trackK->GetHitOnTrack())[1]; // 2'nd hit | |
1801 | ichamBeg = hit->GetChamberNumber(); | |
1802 | ichamEnd = 0; | |
1803 | // Check propagation direction | |
1804 | if (trackK->GetTrackDir() > 0) { | |
1805 | ichamEnd = 9; // forward propagation | |
1806 | Ok = trackK->KalmanFilter(ichamBeg,ichamEnd,kFALSE,zDipole1,zDipole2); | |
1807 | if (Ok) { | |
1808 | ichamBeg = ichamEnd; | |
1809 | ichamEnd = 6; // backward propagation | |
1810 | // Change weight matrix and zero fChi2 for backpropagation | |
1811 | trackK->StartBack(); | |
1812 | Ok = trackK->KalmanFilter(ichamBeg,ichamEnd,kTRUE,zDipole1,zDipole2); | |
1813 | ichamBeg = ichamEnd; | |
1814 | ichamEnd = 0; | |
1815 | } | |
1816 | } else { | |
1817 | if (trackK->GetBPFlag()) { | |
1818 | // backpropagation | |
1819 | ichamEnd = 6; // backward propagation | |
1820 | // Change weight matrix and zero fChi2 for backpropagation | |
1821 | trackK->StartBack(); | |
1822 | Ok = trackK->KalmanFilter(ichamBeg,ichamEnd,kTRUE,zDipole1,zDipole2); | |
1823 | ichamBeg = ichamEnd; | |
1824 | ichamEnd = 0; | |
1825 | } | |
1826 | } | |
1827 | ||
1828 | if (Ok) { | |
1829 | trackK->SetTrackDir(-1); | |
1830 | trackK->SetBPFlag(kFALSE); | |
1831 | Ok = trackK->KalmanFilter(ichamBeg,ichamEnd,kFALSE,zDipole1,zDipole2); | |
1832 | } | |
1833 | if (Ok) trackK->SetTrackQuality(0); // compute "track quality" | |
1834 | else trackK->SetRecover(-1); // mark candidate to be removed | |
1835 | ||
1836 | // Majority 3 of 4 in first 2 stations | |
1837 | chamBits = 0; | |
1838 | for (Int_t i=0; i<trackK->GetNTrackHits(); i++) { | |
1839 | hit = (AliMUONHitForRec*) (*trackK->GetHitOnTrack())[i]; | |
1840 | chamBits |= BIT(hit->GetChamberNumber()-1); | |
1841 | } | |
1842 | //if (!((chamBits&3)==3 || (chamBits>>2&3)==3)) trackK->SetRecover(-1); | |
1843 | //mark candidate to be removed | |
1844 | } // while | |
1845 | ||
1846 | for (Int_t i=0; i<fNRecTracks; i++) { | |
1847 | trackK = (AliMUONTrackK*) ((*fRecTracksPtr)[i]); | |
1848 | if (trackK->GetRecover() < 0) fRecTracksPtr->RemoveAt(i); | |
1849 | } | |
1850 | ||
1851 | // Compress TClonesArray | |
1852 | fRecTracksPtr->Compress(); | |
1853 | fNRecTracks = fRecTracksPtr->GetEntriesFast(); | |
1854 | return; | |
1855 | } | |
1856 | ||
1857 | //__________________________________________________________________________ | |
1858 | Bool_t AliMUONEventReconstructor::CheckCandidateK(Int_t icand, Int_t nSeeds) | |
1859 | { | |
1860 | // Discards track candidate if it will produce the double track (having | |
1861 | // the same seed segment hits as hits of a good track found before) | |
1862 | AliMUONTrackK *track1, *track2; | |
1863 | AliMUONHitForRec *hit1, *hit2, *hit; | |
1864 | ||
1865 | track1 = (AliMUONTrackK*) ((*fRecTracksPtr)[icand]); | |
1866 | hit1 = (AliMUONHitForRec*) (*track1->GetHitOnTrack())[0]; // 1'st hit | |
1867 | hit2 = (AliMUONHitForRec*) (*track1->GetHitOnTrack())[1]; // 2'nd hit | |
1868 | ||
1869 | for (Int_t i=0; i<icand; i++) { | |
1870 | track2 = (AliMUONTrackK*) ((*fRecTracksPtr)[i]); | |
1871 | //if (track2->GetRecover() < 0) continue; | |
1872 | if (track2->GetRecover() < 0 && icand >= nSeeds) continue; | |
1873 | ||
1874 | if (track1->GetStartSegment() == track2->GetStartSegment()) { | |
1875 | return kFALSE; | |
1876 | } else { | |
1877 | Int_t nSame = 0; | |
1878 | for (Int_t j=0; j<track2->GetNTrackHits(); j++) { | |
1879 | hit = (AliMUONHitForRec*) (*track2->GetHitOnTrack())[j]; | |
1880 | if (hit == hit1 || hit == hit2) { | |
1881 | nSame++; | |
1882 | if (nSame == 2) return kFALSE; | |
1883 | } | |
1884 | } // for (Int_t j=0; | |
1885 | } | |
1886 | } // for (Int_t i=0; | |
1887 | return kTRUE; | |
1888 | } | |
1889 | ||
1890 | //__________________________________________________________________________ | |
1891 | void AliMUONEventReconstructor::RemoveDoubleTracksK(void) | |
1892 | { | |
1893 | // Removes double tracks (sharing more than half of their hits). Keeps | |
1894 | // the track with higher quality | |
1895 | AliMUONTrackK *track1, *track2, *trackToKill; | |
1896 | ||
1897 | // Sort tracks according to their quality | |
1898 | fRecTracksPtr->Sort(); | |
1899 | ||
1900 | // Loop over first track of the pair | |
1901 | track1 = (AliMUONTrackK*) fRecTracksPtr->First(); | |
1902 | while (track1) { | |
1903 | // Loop over second track of the pair | |
1904 | track2 = (AliMUONTrackK*) fRecTracksPtr->After(track1); | |
1905 | while (track2) { | |
1906 | // Check whether or not to keep track2 | |
1907 | if (!track2->KeepTrack(track1)) { | |
1908 | cout << " Killed track: " << 1/(*track2->GetTrackParameters())(4,0) << | |
1909 | " " << track2->GetTrackQuality() << endl; | |
1910 | trackToKill = track2; | |
1911 | track2 = (AliMUONTrackK*) fRecTracksPtr->After(track2); | |
1912 | trackToKill->Kill(); | |
1913 | fRecTracksPtr->Compress(); | |
1914 | } else track2 = (AliMUONTrackK*) fRecTracksPtr->After(track2); | |
1915 | } // track2 | |
1916 | track1 = (AliMUONTrackK*) fRecTracksPtr->After(track1); | |
1917 | } // track1 | |
1918 | ||
1919 | fNRecTracks = fRecTracksPtr->GetEntriesFast(); | |
1920 | cout << " Number of Kalman tracks: " << fNRecTracks << endl; | |
1921 | } | |
1922 | ||
1923 | //__________________________________________________________________________ | |
1924 | void AliMUONEventReconstructor::GoToVertex(void) | |
1925 | { | |
1926 | // Propagates track to the vertex thru absorber | |
1927 | // (using Branson correction for now) | |
1928 | ||
1929 | Double_t zVertex; | |
1930 | zVertex = 0; | |
1931 | for (Int_t i=0; i<fNRecTracks; i++) { | |
1932 | //((AliMUONTrackK*)(*fRecTracksPtr)[i])->Branson(); | |
1933 | //((AliMUONTrackK*)(*fRecTracksPtr)[i])->GoToZ(zVertex); // w/out absorber | |
1934 | ((AliMUONTrackK*)(*fRecTracksPtr)[i])->SetTrackQuality(1); // compute Chi2 | |
1935 | ((AliMUONTrackK*)(*fRecTracksPtr)[i])->GoToVertex(); // with absorber | |
1936 | } | |
1937 | } |