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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 | ||
16 | /* | |
17 | $Log$ | |
94de3818 | 18 | Revision 1.12 2000/10/02 16:58:29 egangler |
19 | Cleaning of the code : | |
20 | -> coding conventions | |
21 | -> void Streamers | |
22 | -> some useless includes removed or replaced by "class" statement | |
23 | ||
ecfa008b | 24 | Revision 1.11 2000/09/22 09:16:33 hristov |
25 | Casting needed on DEC | |
26 | ||
8832c7b4 | 27 | Revision 1.10 2000/09/19 09:49:50 gosset |
28 | AliMUONEventReconstructor package | |
29 | * track extrapolation independent from reco_muon.F, use of AliMagF... | |
30 | * possibility to use new magnetic field (automatic from generated root file) | |
31 | ||
a6f03ddb | 32 | Revision 1.9 2000/07/20 12:45:27 gosset |
33 | New "EventReconstructor..." structure, | |
34 | hopefully more adapted to tree/streamer. | |
35 | "AliMUONEventReconstructor::RemoveDoubleTracks" | |
36 | to keep only one track among similar ones. | |
37 | ||
8429a5e4 | 38 | Revision 1.8 2000/07/18 16:04:06 gosset |
39 | AliMUONEventReconstructor package: | |
40 | * a few minor modifications and more comments | |
41 | * a few corrections | |
42 | * right sign for Z of raw clusters | |
43 | * right loop over chambers inside station | |
44 | * symmetrized covariance matrix for measurements (TrackChi2MCS) | |
45 | * right sign of charge in extrapolation (ExtrapToZ) | |
46 | * right zEndAbsorber for Branson correction below 3 degrees | |
47 | * use of TVirtualFitter instead of TMinuit for AliMUONTrack::Fit | |
48 | * no parameter for AliMUONTrack::Fit() but more fit parameters in Track object | |
49 | ||
956019b6 | 50 | Revision 1.7 2000/07/03 12:28:06 gosset |
51 | Printout at the right place after extrapolation to vertex | |
52 | ||
6ae236ee | 53 | Revision 1.6 2000/06/30 12:01:06 gosset |
54 | Correction for hit search in the right chamber (JPC) | |
55 | ||
d82671a0 | 56 | Revision 1.5 2000/06/30 10:15:48 gosset |
57 | Changes to EventReconstructor...: | |
58 | precision fit with multiple Coulomb scattering; | |
59 | extrapolation to vertex with Branson correction in absorber (JPC) | |
60 | ||
04b5ea16 | 61 | Revision 1.4 2000/06/27 14:11:36 gosset |
62 | Corrections against violations of coding conventions | |
63 | ||
9cbdf048 | 64 | Revision 1.3 2000/06/16 07:27:08 gosset |
65 | To remove problem in running RuleChecker, like in MUON-dev | |
66 | ||
79e1e601 | 67 | Revision 1.1.2.5 2000/06/16 07:00:26 gosset |
68 | To remove problem in running RuleChecker | |
69 | ||
a9e2aefa | 70 | Revision 1.1.2.4 2000/06/12 08:00:07 morsch |
71 | Dummy streamer to solve CINT compilation problem (to be investigated !) | |
72 | ||
73 | Revision 1.1.2.3 2000/06/09 20:59:57 morsch | |
74 | Make includes consistent with new file structure. | |
75 | ||
76 | Revision 1.1.2.2 2000/06/09 12:58:05 gosset | |
77 | Removed comment beginnings in Log sections of .cxx files | |
78 | Suppressed most violations of coding rules | |
79 | ||
80 | Revision 1.1.2.1 2000/06/07 14:44:53 gosset | |
81 | Addition of files for track reconstruction in C++ | |
82 | */ | |
83 | ||
84 | //__________________________________________________________________________ | |
85 | // | |
86 | // MUON event reconstructor in ALICE | |
87 | // | |
88 | // This class contains as data: | |
89 | // * the parameters for the event reconstruction | |
90 | // * a pointer to the array of hits to be reconstructed (the event) | |
91 | // * a pointer to the array of segments made with these hits inside each station | |
92 | // * a pointer to the array of reconstructed tracks | |
93 | // | |
94 | // It contains as methods, among others: | |
95 | // * MakeEventToBeReconstructed to build the array of hits to be reconstructed | |
96 | // * MakeSegments to build the segments | |
97 | // * MakeTracks to build the tracks | |
98 | //__________________________________________________________________________ | |
99 | ||
100 | #include <iostream.h> | |
101 | ||
102 | #include <TRandom.h> | |
103 | #include <TFile.h> | |
94de3818 | 104 | #include <TTree.h> |
a9e2aefa | 105 | |
a9e2aefa | 106 | #include "AliMUONEventReconstructor.h" |
107 | #include "AliMUON.h" | |
108 | #include "AliMUONHitForRec.h" | |
109 | #include "AliMUONSegment.h" | |
110 | #include "AliMUONHit.h" | |
111 | #include "AliMUONRawCluster.h" | |
112 | #include "AliMUONTrack.h" | |
113 | #include "AliMUONChamber.h" | |
114 | #include "AliMUONTrackHit.h" | |
94de3818 | 115 | #include "AliMagF.h" |
a9e2aefa | 116 | #include "AliRun.h" |
04b5ea16 | 117 | #include "TParticle.h" |
a9e2aefa | 118 | |
a9e2aefa | 119 | //************* Defaults parameters for reconstruction |
9cbdf048 | 120 | static const Double_t kDefaultMinBendingMomentum = 3.0; |
121 | static const Double_t kDefaultMaxSigma2Distance = 16.0; | |
122 | static const Double_t kDefaultBendingResolution = 0.01; | |
123 | static const Double_t kDefaultNonBendingResolution = 0.144; | |
124 | static const Double_t kDefaultChamberThicknessInX0 = 0.03; | |
a9e2aefa | 125 | // Simple magnetic field: |
126 | // Value taken from macro MUONtracking.C: 0.7 T, hence 7 kG | |
127 | // Length and Position from reco_muon.F, with opposite sign: | |
128 | // Length = ZMAGEND-ZCOIL | |
129 | // Position = (ZMAGEND+ZCOIL)/2 | |
130 | // to be ajusted differently from real magnetic field ???? | |
9cbdf048 | 131 | static const Double_t kDefaultSimpleBValue = 7.0; |
132 | static const Double_t kDefaultSimpleBLength = 428.0; | |
133 | static const Double_t kDefaultSimpleBPosition = 1019.0; | |
134 | static const Int_t kDefaultRecGeantHits = 0; | |
135 | static const Double_t kDefaultEfficiency = 0.95; | |
a9e2aefa | 136 | |
9cbdf048 | 137 | static const Int_t kDefaultPrintLevel = 0; |
a9e2aefa | 138 | |
139 | ClassImp(AliMUONEventReconstructor) // Class implementation in ROOT context | |
140 | ||
141 | //__________________________________________________________________________ | |
142 | AliMUONEventReconstructor::AliMUONEventReconstructor(void) | |
143 | { | |
144 | // Constructor for class AliMUONEventReconstructor | |
145 | SetReconstructionParametersToDefaults(); | |
146 | // Memory allocation for the TClonesArray of hits for reconstruction | |
147 | // Is 10000 the right size ???? | |
148 | fHitsForRecPtr = new TClonesArray("AliMUONHitForRec", 10000); | |
149 | fNHitsForRec = 0; // really needed or GetEntriesFast sufficient ???? | |
150 | // Memory allocation for the TClonesArray's of segments in stations | |
151 | // Is 2000 the right size ???? | |
9cbdf048 | 152 | for (Int_t st = 0; st < kMaxMuonTrackingStations; st++) { |
a9e2aefa | 153 | fSegmentsPtr[st] = new TClonesArray("AliMUONSegment", 2000); |
154 | fNSegments[st] = 0; // really needed or GetEntriesFast sufficient ???? | |
155 | } | |
156 | // Memory allocation for the TClonesArray of reconstructed tracks | |
157 | // Is 10 the right size ???? | |
158 | fRecTracksPtr = new TClonesArray("AliMUONTrack", 10); | |
159 | fNRecTracks = 0; // really needed or GetEntriesFast sufficient ???? | |
8429a5e4 | 160 | // Memory allocation for the TClonesArray of hits on reconstructed tracks |
161 | // Is 100 the right size ???? | |
162 | fRecTrackHitsPtr = new TClonesArray("AliMUONTrack", 100); | |
163 | fNRecTrackHits = 0; // really needed or GetEntriesFast sufficient ???? | |
a9e2aefa | 164 | |
a6f03ddb | 165 | // Sign of fSimpleBValue according to sign of value at (50,50,950). |
166 | Float_t b[3], x[3]; | |
167 | x[0] = 50.; x[1] = 50.; x[2] = 950.; | |
168 | gAlice->Field()->Field(x, b); | |
8832c7b4 | 169 | fSimpleBValue = TMath::Sign(fSimpleBValue,(Double_t) b[2]); |
a6f03ddb | 170 | // See how to get fSimple(BValue, BLength, BPosition) |
171 | // automatically calculated from the actual magnetic field ???? | |
a9e2aefa | 172 | |
173 | if (fPrintLevel >= 0) { | |
a6f03ddb | 174 | cout << "AliMUONEventReconstructor constructed with defaults" << endl; Dump(); |
175 | cout << endl << "Magnetic field from root file:" << endl; | |
176 | gAlice->Field()->Dump(); | |
177 | cout << endl; | |
178 | } | |
a9e2aefa | 179 | return; |
180 | } | |
181 | ||
9cbdf048 | 182 | AliMUONEventReconstructor::AliMUONEventReconstructor (const AliMUONEventReconstructor& Reconstructor) |
183 | { | |
184 | // Dummy copy constructor | |
185 | } | |
186 | ||
187 | AliMUONEventReconstructor & AliMUONEventReconstructor::operator=(const AliMUONEventReconstructor& Reconstructor) | |
188 | { | |
189 | // Dummy assignment operator | |
190 | return *this; | |
191 | } | |
192 | ||
a9e2aefa | 193 | //__________________________________________________________________________ |
194 | AliMUONEventReconstructor::~AliMUONEventReconstructor(void) | |
195 | { | |
196 | // Destructor for class AliMUONEventReconstructor | |
197 | delete fHitsForRecPtr; // Correct destruction of everything ???? or delete [] ???? | |
9cbdf048 | 198 | for (Int_t st = 0; st < kMaxMuonTrackingStations; st++) |
a9e2aefa | 199 | delete fSegmentsPtr[st]; // Correct destruction of everything ???? |
200 | return; | |
201 | } | |
202 | ||
203 | //__________________________________________________________________________ | |
204 | void AliMUONEventReconstructor::SetReconstructionParametersToDefaults(void) | |
205 | { | |
206 | // Set reconstruction parameters to default values | |
207 | // Would be much more convenient with a structure (or class) ???? | |
9cbdf048 | 208 | fMinBendingMomentum = kDefaultMinBendingMomentum; |
209 | fMaxSigma2Distance = kDefaultMaxSigma2Distance; | |
a9e2aefa | 210 | |
9cbdf048 | 211 | AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON"); |
a9e2aefa | 212 | // ******** Parameters for making HitsForRec |
213 | // minimum radius, | |
214 | // like in TRACKF_STAT: | |
215 | // 2 degrees for stations 1 and 2, or ch(0...) from 0 to 3; | |
216 | // 30 cm for stations 3 to 5, or ch(0...) from 4 to 9 | |
9cbdf048 | 217 | for (Int_t ch = 0; ch < kMaxMuonTrackingChambers; ch++) { |
218 | if (ch < 4) fRMin[ch] = TMath::Abs((&(pMUON->Chamber(ch)))->Z()) * | |
a9e2aefa | 219 | 2.0 * TMath::Pi() / 180.0; |
220 | else fRMin[ch] = 30.0; | |
221 | } | |
222 | // maximum radius | |
223 | // like in TRACKF_STAT (10 degrees ????) | |
224 | fRMax[0] = fRMax[1] = 91.5; | |
225 | fRMax[2] = fRMax[3] = 122.5; | |
226 | fRMax[4] = fRMax[5] = 158.3; | |
227 | fRMax[6] = fRMax[7] = 260.0; | |
228 | fRMax[8] = fRMax[9] = 260.0; | |
229 | ||
230 | // ******** Parameters for making segments | |
231 | // should be parametrized ???? | |
232 | // according to interval between chambers in a station ???? | |
233 | // Maximum distance in non bending plane | |
234 | // 5 * 0.22 just to remember the way it was made in TRACKF_STAT | |
235 | // SIGCUT*DYMAX(IZ) | |
9cbdf048 | 236 | for (Int_t st = 0; st < kMaxMuonTrackingStations; st++) |
a9e2aefa | 237 | fSegmentMaxDistNonBending[st] = 5. * 0.22; |
238 | // Maximum distance in bending plane | |
239 | // values from TRACKF_STAT corresponding to (J psi 20cm) | |
240 | fSegmentMaxDistBending[0] = 1.5; | |
241 | fSegmentMaxDistBending[1] = 1.5; | |
242 | fSegmentMaxDistBending[2] = 3.0; | |
243 | fSegmentMaxDistBending[3] = 6.0; | |
244 | fSegmentMaxDistBending[4] = 6.0; | |
245 | ||
9cbdf048 | 246 | fBendingResolution = kDefaultBendingResolution; |
247 | fNonBendingResolution = kDefaultNonBendingResolution; | |
248 | fChamberThicknessInX0 = kDefaultChamberThicknessInX0; | |
249 | fSimpleBValue = kDefaultSimpleBValue; | |
250 | fSimpleBLength = kDefaultSimpleBLength; | |
251 | fSimpleBPosition = kDefaultSimpleBPosition; | |
252 | fRecGeantHits = kDefaultRecGeantHits; | |
253 | fEfficiency = kDefaultEfficiency; | |
254 | fPrintLevel = kDefaultPrintLevel; | |
a9e2aefa | 255 | return; |
256 | } | |
257 | ||
258 | //__________________________________________________________________________ | |
259 | Double_t AliMUONEventReconstructor::GetImpactParamFromBendingMomentum(Double_t BendingMomentum) | |
260 | { | |
261 | // Returns impact parameter at vertex in bending plane (cm), | |
262 | // from the signed bending momentum "BendingMomentum" in bending plane (GeV/c), | |
263 | // using simple values for dipole magnetic field. | |
264 | // The sign is the sign of the charge. | |
265 | return (-0.0003 * fSimpleBValue * fSimpleBLength * fSimpleBPosition / | |
266 | BendingMomentum); | |
267 | } | |
268 | ||
269 | //__________________________________________________________________________ | |
270 | Double_t AliMUONEventReconstructor::GetBendingMomentumFromImpactParam(Double_t ImpactParam) | |
271 | { | |
272 | // Returns signed bending momentum in bending plane (GeV/c), | |
273 | // from the impact parameter "ImpactParam" at vertex in bending plane (cm), | |
274 | // using simple values for dipole magnetic field. | |
275 | // The sign is the sign of the charge. | |
276 | return (-0.0003 * fSimpleBValue * fSimpleBLength * fSimpleBPosition / | |
277 | ImpactParam); | |
278 | } | |
279 | ||
280 | //__________________________________________________________________________ | |
281 | void AliMUONEventReconstructor::SetBkgGeantFile(Text_t *BkgGeantFileName) | |
282 | { | |
283 | // Set background file ... for GEANT hits | |
284 | // Must be called after having loaded the firts signal event | |
285 | if (fPrintLevel >= 0) { | |
286 | cout << "Enter SetBkgGeantFile with BkgGeantFileName ``" | |
287 | << BkgGeantFileName << "''" << endl;} | |
288 | if (strlen(BkgGeantFileName)) { | |
289 | // BkgGeantFileName not empty: try to open the file | |
290 | if (fPrintLevel >= 2) {cout << "Before File(Bkg)" << endl; gDirectory->Dump();} | |
291 | fBkgGeantFile = new TFile(BkgGeantFileName); | |
292 | if (fPrintLevel >= 2) {cout << "After File(Bkg)" << endl; gDirectory->Dump();} | |
293 | if (fBkgGeantFile-> IsOpen()) { | |
294 | if (fPrintLevel >= 0) { | |
295 | cout << "Background for GEANT hits in file: ``" << BkgGeantFileName | |
296 | << "'' successfully opened" << endl;} | |
297 | } | |
298 | else { | |
299 | cout << "Background for GEANT hits in file: " << BkgGeantFileName << endl; | |
300 | cout << "NOT FOUND: EXIT" << endl; | |
301 | exit(0); // right instruction for exit ???? | |
302 | } | |
303 | // Arrays for "particles" and "hits" | |
304 | fBkgGeantParticles = new TClonesArray("TParticle", 200); | |
305 | fBkgGeantHits = new TClonesArray("AliMUONHit", 2000); | |
306 | // Event number to -1 for initialization | |
307 | fBkgGeantEventNumber = -1; | |
308 | // Back to the signal file: | |
309 | // first signal event must have been loaded previously, | |
310 | // otherwise, Segmentation violation at the next instruction | |
311 | // How is it possible to do smething better ???? | |
312 | ((gAlice->TreeK())->GetCurrentFile())->cd(); | |
313 | if (fPrintLevel >= 2) {cout << "After cd(gAlice)" << endl; gDirectory->Dump();} | |
314 | } | |
315 | return; | |
316 | } | |
317 | ||
318 | //__________________________________________________________________________ | |
319 | void AliMUONEventReconstructor::NextBkgGeantEvent(void) | |
320 | { | |
321 | // Get next event in background file for GEANT hits | |
322 | // Goes back to event number 0 when end of file is reached | |
323 | char treeName[20]; | |
324 | TBranch *branch; | |
325 | if (fPrintLevel >= 0) { | |
326 | cout << "Enter NextBkgGeantEvent" << endl;} | |
327 | // Clean previous event | |
328 | if(fBkgGeantTK) delete fBkgGeantTK; | |
329 | fBkgGeantTK = NULL; | |
330 | if(fBkgGeantParticles) fBkgGeantParticles->Clear(); | |
331 | if(fBkgGeantTH) delete fBkgGeantTH; | |
332 | fBkgGeantTH = NULL; | |
333 | if(fBkgGeantHits) fBkgGeantHits->Clear(); | |
334 | // Increment event number | |
335 | fBkgGeantEventNumber++; | |
336 | // Get access to Particles and Hits for event from background file | |
337 | if (fPrintLevel >= 2) {cout << "Before cd(Bkg)" << endl; gDirectory->Dump();} | |
338 | fBkgGeantFile->cd(); | |
339 | if (fPrintLevel >= 2) {cout << "After cd(Bkg)" << endl; gDirectory->Dump();} | |
340 | // Particles: TreeK for event and branch "Particles" | |
341 | sprintf(treeName, "TreeK%d", fBkgGeantEventNumber); | |
342 | fBkgGeantTK = (TTree*)gDirectory->Get(treeName); | |
343 | if (!fBkgGeantTK) { | |
344 | if (fPrintLevel >= 0) { | |
345 | cout << "Cannot find Kine Tree for background event: " << | |
346 | fBkgGeantEventNumber << endl; | |
347 | cout << "Goes back to event 0" << endl; | |
348 | } | |
349 | fBkgGeantEventNumber = 0; | |
350 | sprintf(treeName, "TreeK%d", fBkgGeantEventNumber); | |
351 | fBkgGeantTK = (TTree*)gDirectory->Get(treeName); | |
352 | if (!fBkgGeantTK) { | |
353 | cout << "ERROR: cannot find Kine Tree for background event: " << | |
354 | fBkgGeantEventNumber << endl; | |
355 | exit(0); | |
356 | } | |
357 | } | |
358 | if (fBkgGeantTK) | |
359 | fBkgGeantTK->SetBranchAddress("Particles", &fBkgGeantParticles); | |
360 | fBkgGeantTK->GetEvent(0); // why event 0 ???? necessary ???? | |
361 | // Hits: TreeH for event and branch "MUON" | |
362 | sprintf(treeName, "TreeH%d", fBkgGeantEventNumber); | |
363 | fBkgGeantTH = (TTree*)gDirectory->Get(treeName); | |
364 | if (!fBkgGeantTH) { | |
365 | cout << "ERROR: cannot find Hits Tree for background event: " << | |
366 | fBkgGeantEventNumber << endl; | |
367 | exit(0); | |
368 | } | |
369 | if (fBkgGeantTH && fBkgGeantHits) { | |
370 | branch = fBkgGeantTH->GetBranch("MUON"); | |
371 | if (branch) branch->SetAddress(&fBkgGeantHits); | |
372 | } | |
373 | fBkgGeantTH->GetEntries(); // necessary ???? | |
374 | // Back to the signal file | |
375 | ((gAlice->TreeK())->GetCurrentFile())->cd(); | |
376 | if (fPrintLevel >= 2) {cout << "After cd(gAlice)" << endl; gDirectory->Dump();} | |
377 | return; | |
378 | } | |
379 | ||
380 | //__________________________________________________________________________ | |
381 | void AliMUONEventReconstructor::EventReconstruct(void) | |
382 | { | |
383 | // To reconstruct one event | |
384 | if (fPrintLevel >= 1) cout << "enter EventReconstruct" << endl; | |
385 | MakeEventToBeReconstructed(); | |
386 | MakeSegments(); | |
387 | MakeTracks(); | |
388 | return; | |
389 | } | |
390 | ||
391 | //__________________________________________________________________________ | |
392 | void AliMUONEventReconstructor::ResetHitsForRec(void) | |
393 | { | |
394 | // To reset the array and the number of HitsForRec, | |
395 | // and also the number of HitsForRec | |
396 | // and the index of the first HitForRec per chamber | |
397 | if (fHitsForRecPtr) fHitsForRecPtr->Clear(); | |
398 | fNHitsForRec = 0; | |
9cbdf048 | 399 | for (Int_t ch = 0; ch < kMaxMuonTrackingChambers; ch++) |
a9e2aefa | 400 | fNHitsForRecPerChamber[ch] = fIndexOfFirstHitForRecPerChamber[ch] = 0; |
401 | return; | |
402 | } | |
403 | ||
404 | //__________________________________________________________________________ | |
405 | void AliMUONEventReconstructor::ResetSegments(void) | |
406 | { | |
407 | // To reset the TClonesArray of segments and the number of Segments | |
408 | // for all stations | |
9cbdf048 | 409 | for (Int_t st = 0; st < kMaxMuonTrackingStations; st++) { |
a9e2aefa | 410 | if (fSegmentsPtr[st]) fSegmentsPtr[st]->Clear(); |
411 | fNSegments[st] = 0; | |
412 | } | |
413 | return; | |
414 | } | |
415 | ||
416 | //__________________________________________________________________________ | |
417 | void AliMUONEventReconstructor::ResetTracks(void) | |
418 | { | |
419 | // To reset the TClonesArray of reconstructed tracks | |
8429a5e4 | 420 | if (fRecTracksPtr) fRecTracksPtr->Delete(); |
421 | // Delete in order that the Track destructors are called, | |
422 | // hence the space for the TClonesArray of pointers to TrackHit's is freed | |
a9e2aefa | 423 | fNRecTracks = 0; |
424 | return; | |
425 | } | |
426 | ||
8429a5e4 | 427 | //__________________________________________________________________________ |
428 | void AliMUONEventReconstructor::ResetTrackHits(void) | |
429 | { | |
430 | // To reset the TClonesArray of hits on reconstructed tracks | |
431 | if (fRecTrackHitsPtr) fRecTrackHitsPtr->Clear(); | |
432 | fNRecTrackHits = 0; | |
433 | return; | |
434 | } | |
435 | ||
a9e2aefa | 436 | //__________________________________________________________________________ |
437 | void AliMUONEventReconstructor::MakeEventToBeReconstructed(void) | |
438 | { | |
439 | // To make the list of hits to be reconstructed, | |
440 | // either from the GEANT hits or from the raw clusters | |
441 | // according to the parameter set for the reconstructor | |
442 | if (fPrintLevel >= 1) cout << "enter MakeEventToBeReconstructed" << endl; | |
443 | ResetHitsForRec(); | |
444 | if (fRecGeantHits == 1) { | |
445 | // Reconstruction from GEANT hits | |
446 | // Back to the signal file | |
447 | ((gAlice->TreeK())->GetCurrentFile())->cd(); | |
448 | // Signal hits | |
449 | // AliMUON *MUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? | |
450 | // Security on MUON ???? | |
451 | AddHitsForRecFromGEANT(gAlice->TreeH()); | |
452 | // Background hits | |
453 | AddHitsForRecFromBkgGEANT(fBkgGeantTH, fBkgGeantHits); | |
454 | // Sort HitsForRec in increasing order with respect to chamber number | |
455 | SortHitsForRecWithIncreasingChamber(); | |
456 | } | |
457 | else { | |
458 | // Reconstruction from raw clusters | |
459 | // AliMUON *MUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? | |
460 | // Security on MUON ???? | |
461 | // TreeR assumed to be be "prepared" in calling function | |
462 | // by "MUON->GetTreeR(nev)" ???? | |
9cbdf048 | 463 | TTree *treeR = gAlice->TreeR(); |
464 | AddHitsForRecFromRawClusters(treeR); | |
a9e2aefa | 465 | // No sorting: it is done automatically in the previous function |
466 | } | |
467 | if (fPrintLevel >= 10) { | |
468 | cout << "end of MakeEventToBeReconstructed" << endl; | |
469 | cout << "NHitsForRec: " << fNHitsForRec << endl; | |
9cbdf048 | 470 | for (Int_t ch = 0; ch < kMaxMuonTrackingChambers; ch++) { |
a9e2aefa | 471 | cout << "chamber(0...): " << ch |
472 | << " NHitsForRec: " << fNHitsForRecPerChamber[ch] | |
473 | << " index(first HitForRec): " << fIndexOfFirstHitForRecPerChamber[ch] | |
474 | << endl; | |
475 | for (Int_t hit = fIndexOfFirstHitForRecPerChamber[ch]; | |
476 | hit < fIndexOfFirstHitForRecPerChamber[ch] + fNHitsForRecPerChamber[ch]; | |
477 | hit++) { | |
478 | cout << "HitForRec index(0...): " << hit << endl; | |
479 | ((*fHitsForRecPtr)[hit])->Dump(); | |
480 | } | |
481 | } | |
482 | } | |
483 | return; | |
484 | } | |
485 | ||
486 | //__________________________________________________________________________ | |
487 | void AliMUONEventReconstructor::AddHitsForRecFromGEANT(TTree *TH) | |
488 | { | |
489 | // To add to the list of hits for reconstruction | |
490 | // the GEANT signal hits from a hit tree TH. | |
491 | if (fPrintLevel >= 2) | |
492 | cout << "enter AddHitsForRecFromGEANT with TH: " << TH << endl; | |
493 | if (TH == NULL) return; | |
9cbdf048 | 494 | AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? |
a9e2aefa | 495 | // Security on MUON ???? |
496 | // See whether it could be the same for signal and background ???? | |
497 | // Loop over tracks in tree | |
498 | Int_t ntracks = (Int_t) TH->GetEntries(); | |
499 | if (fPrintLevel >= 2) | |
500 | cout << "ntracks: " << ntracks << endl; | |
501 | for (Int_t track = 0; track < ntracks; track++) { | |
502 | gAlice->ResetHits(); | |
503 | TH->GetEvent(track); | |
504 | // Loop over hits | |
505 | Int_t hit = 0; | |
9cbdf048 | 506 | for (AliMUONHit* mHit = (AliMUONHit*) pMUON->FirstHit(-1); |
a9e2aefa | 507 | mHit; |
9cbdf048 | 508 | mHit = (AliMUONHit*) pMUON->NextHit(), hit++) { |
a9e2aefa | 509 | NewHitForRecFromGEANT(mHit,track, hit, 1); |
510 | } // end of hit loop | |
511 | } // end of track loop | |
512 | return; | |
513 | } | |
514 | ||
515 | //__________________________________________________________________________ | |
516 | void AliMUONEventReconstructor::AddHitsForRecFromBkgGEANT(TTree *TH, TClonesArray *Hits) | |
517 | { | |
518 | // To add to the list of hits for reconstruction | |
519 | // the GEANT background hits from a hit tree TH and a pointer Hits to a hit list. | |
520 | // How to have only one function "AddHitsForRecFromGEANT" ???? | |
521 | if (fPrintLevel >= 2) | |
522 | cout << "enter AddHitsForRecFromBkgGEANT with TH: " << TH << endl; | |
523 | if (TH == NULL) return; | |
524 | // Loop over tracks in tree | |
525 | Int_t ntracks = (Int_t) TH->GetEntries(); | |
526 | if (fPrintLevel >= 2) | |
527 | cout << "ntracks: " << ntracks << endl; | |
528 | for (Int_t track = 0; track < ntracks; track++) { | |
529 | if (Hits) Hits->Clear(); | |
530 | TH->GetEvent(track); | |
531 | // Loop over hits | |
532 | for (Int_t hit = 0; hit < Hits->GetEntriesFast(); hit++) { | |
533 | NewHitForRecFromGEANT((AliMUONHit*) (*Hits)[hit], track, hit, 0); | |
534 | } // end of hit loop | |
535 | } // end of track loop | |
536 | return; | |
537 | } | |
538 | ||
539 | //__________________________________________________________________________ | |
540 | AliMUONHitForRec* AliMUONEventReconstructor::NewHitForRecFromGEANT(AliMUONHit* Hit, Int_t TrackNumber, Int_t HitNumber, Int_t Signal) | |
541 | { | |
542 | // To make a new hit for reconstruction from a GEANT hit pointed to by "Hit", | |
543 | // with hit number "HitNumber" in the track numbered "TrackNumber", | |
544 | // either from signal ("Signal" = 1) or background ("Signal" = 0) event. | |
545 | // Selects hits in tracking (not trigger) chambers. | |
546 | // Takes into account the efficiency (fEfficiency) | |
547 | // and the smearing from resolution (fBendingResolution and fNonBendingResolution). | |
548 | // Adds a condition on the radius between RMin and RMax | |
549 | // to better simulate the real chambers. | |
550 | // Returns the pointer to the new hit for reconstruction, | |
551 | // or NULL in case of inefficiency or non tracking chamber or bad radius. | |
552 | // No condition on at most 20 cm from a muon from a resonance | |
553 | // like in Fortran TRACKF_STAT. | |
554 | AliMUONHitForRec* hitForRec; | |
555 | Double_t bendCoor, nonBendCoor, radius; | |
556 | Int_t chamber = Hit->fChamber - 1; // chamber(0...) | |
557 | // only in tracking chambers (fChamber starts at 1) | |
9cbdf048 | 558 | if (chamber >= kMaxMuonTrackingChambers) return NULL; |
a9e2aefa | 559 | // only if hit is efficient (keep track for checking ????) |
560 | if (gRandom->Rndm() > fEfficiency) return NULL; | |
561 | // only if radius between RMin and RMax | |
94de3818 | 562 | bendCoor = Hit->Y(); |
563 | nonBendCoor = Hit->X(); | |
a9e2aefa | 564 | radius = TMath::Sqrt((bendCoor * bendCoor) + (nonBendCoor * nonBendCoor)); |
565 | if ((radius < fRMin[chamber]) || (radius > fRMax[chamber])) return NULL; | |
566 | // new AliMUONHitForRec from GEANT hit and increment number of AliMUONHitForRec's | |
567 | hitForRec = new ((*fHitsForRecPtr)[fNHitsForRec]) AliMUONHitForRec(Hit); | |
568 | fNHitsForRec++; | |
569 | // add smearing from resolution | |
570 | hitForRec->SetBendingCoor(bendCoor + gRandom->Gaus(0., fBendingResolution)); | |
571 | hitForRec->SetNonBendingCoor(nonBendCoor | |
572 | + gRandom->Gaus(0., fNonBendingResolution)); | |
573 | // more information into HitForRec | |
574 | // resolution: angular effect to be added here ???? | |
575 | hitForRec->SetBendingReso2(fBendingResolution * fBendingResolution); | |
576 | hitForRec->SetNonBendingReso2(fNonBendingResolution * fNonBendingResolution); | |
577 | // GEANT track info | |
578 | hitForRec->SetHitNumber(HitNumber); | |
579 | hitForRec->SetTHTrack(TrackNumber); | |
580 | hitForRec->SetGeantSignal(Signal); | |
581 | if (fPrintLevel >= 10) { | |
582 | cout << "track: " << TrackNumber << " hit: " << HitNumber << endl; | |
583 | Hit->Dump(); | |
584 | cout << "AliMUONHitForRec number (1...): " << fNHitsForRec << endl; | |
585 | hitForRec->Dump();} | |
586 | return hitForRec; | |
587 | } | |
588 | ||
589 | //__________________________________________________________________________ | |
590 | void AliMUONEventReconstructor::SortHitsForRecWithIncreasingChamber() | |
591 | { | |
592 | // Sort HitsForRec's in increasing order with respect to chamber number. | |
593 | // Uses the function "Compare". | |
594 | // Update the information for HitsForRec per chamber too. | |
595 | Int_t ch, nhits, prevch; | |
596 | fHitsForRecPtr->Sort(); | |
9cbdf048 | 597 | for (ch = 0; ch < kMaxMuonTrackingChambers; ch++) { |
a9e2aefa | 598 | fNHitsForRecPerChamber[ch] = 0; |
599 | fIndexOfFirstHitForRecPerChamber[ch] = 0; | |
600 | } | |
601 | prevch = 0; // previous chamber | |
602 | nhits = 0; // number of hits in current chamber | |
603 | // Loop over HitsForRec | |
604 | for (Int_t hit = 0; hit < fNHitsForRec; hit++) { | |
605 | // chamber number (0...) | |
606 | ch = ((AliMUONHitForRec*) ((*fHitsForRecPtr)[hit]))->GetChamberNumber(); | |
607 | // increment number of hits in current chamber | |
608 | (fNHitsForRecPerChamber[ch])++; | |
609 | // update index of first HitForRec in current chamber | |
610 | // if chamber number different from previous one | |
611 | if (ch != prevch) { | |
612 | fIndexOfFirstHitForRecPerChamber[ch] = hit; | |
613 | prevch = ch; | |
614 | } | |
615 | } | |
616 | return; | |
617 | } | |
618 | ||
619 | // //__________________________________________________________________________ | |
620 | // void AliMUONEventReconstructor::AddHitsForRecFromCathodeCorrelations(TTree* TC) | |
621 | // { | |
622 | // // OLD VERSION WHEN ONE ONE WAS USING SO CALLED CATHODE CORRELATIONS | |
623 | // // To add to the list of hits for reconstruction | |
624 | // // the (cathode correlated) raw clusters | |
625 | // // No condition added, like in Fortran TRACKF_STAT, | |
626 | // // on the radius between RMin and RMax. | |
627 | // AliMUONHitForRec *hitForRec; | |
628 | // if (fPrintLevel >= 1) cout << "enter AddHitsForRecFromCathodeCorrelations" << endl; | |
629 | // AliMUON *MUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? | |
630 | // // Security on MUON ???? | |
631 | // // Loop over tracking chambers | |
9cbdf048 | 632 | // for (Int_t ch = 0; ch < kMaxMuonTrackingChambers; ch++) { |
a9e2aefa | 633 | // // number of HitsForRec to 0 for the chamber |
634 | // fNHitsForRecPerChamber[ch] = 0; | |
635 | // // index of first HitForRec for the chamber | |
636 | // if (ch == 0) fIndexOfFirstHitForRecPerChamber[ch] = 0; | |
637 | // else fIndexOfFirstHitForRecPerChamber[ch] = fNHitsForRec; | |
638 | // TClonesArray *reconst_hits = MUON->ReconstHitsAddress(ch); | |
639 | // MUON->ResetReconstHits(); | |
640 | // TC->GetEvent(); | |
641 | // Int_t ncor = (Int_t)reconst_hits->GetEntries(); | |
642 | // // Loop over (cathode correlated) raw clusters | |
643 | // for (Int_t cor = 0; cor < ncor; cor++) { | |
644 | // AliMUONReconstHit * mCor = | |
645 | // (AliMUONReconstHit*) reconst_hits->UncheckedAt(cor); | |
646 | // // new AliMUONHitForRec from (cathode correlated) raw cluster | |
647 | // // and increment number of AliMUONHitForRec's (total and in chamber) | |
648 | // hitForRec = new ((*fHitsForRecPtr)[fNHitsForRec]) AliMUONHitForRec(mCor); | |
649 | // fNHitsForRec++; | |
650 | // (fNHitsForRecPerChamber[ch])++; | |
651 | // // more information into HitForRec | |
652 | // hitForRec->SetChamberNumber(ch); | |
653 | // hitForRec->SetHitNumber(cor); | |
654 | // // Z coordinate of the chamber (cm) with sign opposite to GEANT sign | |
655 | // // could (should) be more exact from chamber geometry ???? | |
656 | // hitForRec->SetZ(-(&(MUON->Chamber(ch)))->Z()); | |
657 | // if (fPrintLevel >= 10) { | |
658 | // cout << "chamber (0...): " << ch << | |
659 | // " cathcorrel (0...): " << cor << endl; | |
660 | // mCor->Dump(); | |
661 | // cout << "AliMUONHitForRec number (1...): " << fNHitsForRec << endl; | |
662 | // hitForRec->Dump();} | |
663 | // } // end of cluster loop | |
664 | // } // end of chamber loop | |
665 | // return; | |
666 | // } | |
667 | ||
668 | //__________________________________________________________________________ | |
669 | void AliMUONEventReconstructor::AddHitsForRecFromRawClusters(TTree* TR) | |
670 | { | |
671 | // To add to the list of hits for reconstruction all the raw clusters | |
672 | // No condition added, like in Fortran TRACKF_STAT, | |
673 | // on the radius between RMin and RMax. | |
674 | AliMUONHitForRec *hitForRec; | |
675 | AliMUONRawCluster *clus; | |
676 | Int_t iclus, nclus; | |
677 | TClonesArray *rawclusters; | |
678 | if (fPrintLevel >= 1) cout << "enter AddHitsForRecFromRawClusters" << endl; | |
9cbdf048 | 679 | AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? |
a9e2aefa | 680 | // Security on MUON ???? |
681 | // Loop over tracking chambers | |
9cbdf048 | 682 | for (Int_t ch = 0; ch < kMaxMuonTrackingChambers; ch++) { |
a9e2aefa | 683 | // number of HitsForRec to 0 for the chamber |
684 | fNHitsForRecPerChamber[ch] = 0; | |
685 | // index of first HitForRec for the chamber | |
686 | if (ch == 0) fIndexOfFirstHitForRecPerChamber[ch] = 0; | |
687 | else fIndexOfFirstHitForRecPerChamber[ch] = fNHitsForRec; | |
9cbdf048 | 688 | rawclusters = pMUON->RawClustAddress(ch); |
689 | pMUON->ResetRawClusters(); | |
a9e2aefa | 690 | TR->GetEvent((Int_t) (TR->GetEntries()) - 1); // to be checked ???? |
691 | nclus = (Int_t) (rawclusters->GetEntries()); | |
692 | // Loop over (cathode correlated) raw clusters | |
693 | for (iclus = 0; iclus < nclus; iclus++) { | |
694 | clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(iclus); | |
695 | // new AliMUONHitForRec from raw cluster | |
696 | // and increment number of AliMUONHitForRec's (total and in chamber) | |
697 | hitForRec = new ((*fHitsForRecPtr)[fNHitsForRec]) AliMUONHitForRec(clus); | |
698 | fNHitsForRec++; | |
699 | (fNHitsForRecPerChamber[ch])++; | |
700 | // more information into HitForRec | |
701 | // resolution: info should be already in raw cluster and taken from it ???? | |
702 | hitForRec->SetBendingReso2(fBendingResolution * fBendingResolution); | |
703 | hitForRec->SetNonBendingReso2(fNonBendingResolution * fNonBendingResolution); | |
704 | // original raw cluster | |
705 | hitForRec->SetChamberNumber(ch); | |
706 | hitForRec->SetHitNumber(iclus); | |
956019b6 | 707 | // Z coordinate of the chamber (cm) |
a9e2aefa | 708 | // could (should) be more exact from chamber geometry ???? |
956019b6 | 709 | hitForRec->SetZ((&(pMUON->Chamber(ch)))->Z()); |
a9e2aefa | 710 | if (fPrintLevel >= 10) { |
711 | cout << "chamber (0...): " << ch << | |
712 | " raw cluster (0...): " << iclus << endl; | |
713 | clus->Dump(); | |
714 | cout << "AliMUONHitForRec number (1...): " << fNHitsForRec << endl; | |
715 | hitForRec->Dump();} | |
716 | } // end of cluster loop | |
717 | } // end of chamber loop | |
718 | return; | |
719 | } | |
720 | ||
721 | //__________________________________________________________________________ | |
722 | void AliMUONEventReconstructor::MakeSegments(void) | |
723 | { | |
724 | // To make the list of segments in all stations, | |
725 | // from the list of hits to be reconstructed | |
726 | if (fPrintLevel >= 1) cout << "enter MakeSegments" << endl; | |
727 | ResetSegments(); | |
728 | // Loop over stations | |
9cbdf048 | 729 | for (Int_t st = 0; st < kMaxMuonTrackingStations; st++) |
a9e2aefa | 730 | MakeSegmentsPerStation(st); |
731 | if (fPrintLevel >= 10) { | |
732 | cout << "end of MakeSegments" << endl; | |
9cbdf048 | 733 | for (Int_t st = 0; st < kMaxMuonTrackingStations; st++) { |
a9e2aefa | 734 | cout << "station(0...): " << st |
735 | << " Segments: " << fNSegments[st] | |
736 | << endl; | |
737 | for (Int_t seg = 0; | |
738 | seg < fNSegments[st]; | |
739 | seg++) { | |
740 | cout << "Segment index(0...): " << seg << endl; | |
741 | ((*fSegmentsPtr[st])[seg])->Dump(); | |
742 | } | |
743 | } | |
744 | } | |
745 | return; | |
746 | } | |
747 | ||
748 | //__________________________________________________________________________ | |
749 | void AliMUONEventReconstructor::MakeSegmentsPerStation(Int_t Station) | |
750 | { | |
751 | // To make the list of segments in station number "Station" (0...) | |
752 | // from the list of hits to be reconstructed. | |
753 | // Updates "fNSegments"[Station]. | |
754 | // Segments in stations 4 and 5 are sorted | |
755 | // according to increasing absolute value of "impact parameter" | |
756 | AliMUONHitForRec *hit1Ptr, *hit2Ptr; | |
757 | AliMUONSegment *segment; | |
758 | Bool_t last2st; | |
759 | Double_t bendingSlope, distBend, distNonBend, extBendCoor, extNonBendCoor, | |
ecfa008b | 760 | impactParam = 0., maxImpactParam = 0.; // =0 to avoid compilation warnings. |
9cbdf048 | 761 | AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? |
a9e2aefa | 762 | if (fPrintLevel >= 1) |
763 | cout << "enter MakeSegmentsPerStation (0...) " << Station << endl; | |
764 | // first and second chambers (0...) in the station | |
765 | Int_t ch1 = 2 * Station; | |
766 | Int_t ch2 = ch1 + 1; | |
767 | // variable true for stations downstream of the dipole: | |
768 | // Station(0..4) equal to 3 or 4 | |
769 | if ((Station == 3) || (Station == 4)) { | |
770 | last2st = kTRUE; | |
771 | // maximum impact parameter (cm) according to fMinBendingMomentum... | |
772 | maxImpactParam = | |
773 | TMath::Abs(GetImpactParamFromBendingMomentum(fMinBendingMomentum)); | |
774 | } | |
775 | else last2st = kFALSE; | |
776 | // extrapolation factor from Z of first chamber to Z of second chamber | |
777 | // dZ to be changed to take into account fine structure of chambers ???? | |
778 | Double_t extrapFact = | |
9cbdf048 | 779 | (&(pMUON->Chamber(ch2)))->Z() / (&(pMUON->Chamber(ch1)))->Z(); |
a9e2aefa | 780 | // index for current segment |
781 | Int_t segmentIndex = 0; | |
782 | // Loop over HitsForRec in the first chamber of the station | |
783 | for (Int_t hit1 = fIndexOfFirstHitForRecPerChamber[ch1]; | |
784 | hit1 < fIndexOfFirstHitForRecPerChamber[ch1] + fNHitsForRecPerChamber[ch1]; | |
785 | hit1++) { | |
786 | // pointer to the HitForRec | |
787 | hit1Ptr = (AliMUONHitForRec*) ((*fHitsForRecPtr)[hit1]); | |
788 | // extrapolation, | |
789 | // on the straight line joining the HitForRec to the vertex (0,0,0), | |
790 | // to the Z of the second chamber of the station | |
791 | extBendCoor = extrapFact * hit1Ptr->GetBendingCoor(); | |
792 | extNonBendCoor = extrapFact * hit1Ptr->GetNonBendingCoor(); | |
793 | // Loop over HitsForRec in the second chamber of the station | |
794 | for (Int_t hit2 = fIndexOfFirstHitForRecPerChamber[ch2]; | |
795 | hit2 < fIndexOfFirstHitForRecPerChamber[ch2] + fNHitsForRecPerChamber[ch2]; | |
796 | hit2++) { | |
797 | // pointer to the HitForRec | |
798 | hit2Ptr = (AliMUONHitForRec*) ((*fHitsForRecPtr)[hit2]); | |
799 | // absolute values of distances, in bending and non bending planes, | |
800 | // between the HitForRec in the second chamber | |
801 | // and the previous extrapolation | |
802 | distBend = TMath::Abs(hit2Ptr->GetBendingCoor() - extBendCoor); | |
803 | distNonBend = TMath::Abs(hit2Ptr->GetNonBendingCoor() - extNonBendCoor); | |
804 | if (last2st) { | |
805 | // bending slope | |
806 | bendingSlope = (hit1Ptr->GetBendingCoor() - hit2Ptr->GetBendingCoor()) / | |
807 | (hit1Ptr->GetZ() - hit2Ptr->GetZ()); | |
808 | // absolute value of impact parameter | |
809 | impactParam = | |
810 | TMath::Abs(hit1Ptr->GetBendingCoor() - hit2Ptr->GetZ() * bendingSlope); | |
811 | } | |
812 | // check for distances not too large, | |
813 | // and impact parameter not too big if stations downstream of the dipole. | |
814 | // Conditions "distBend" and "impactParam" correlated for these stations ???? | |
815 | if ((distBend < fSegmentMaxDistBending[Station]) && | |
816 | (distNonBend < fSegmentMaxDistNonBending[Station]) && | |
817 | (!last2st || (impactParam < maxImpactParam))) { | |
818 | // make new segment | |
819 | segment = new ((*fSegmentsPtr[Station])[segmentIndex]) | |
820 | AliMUONSegment(hit1Ptr, hit2Ptr); | |
821 | // update "link" to this segment from the hit in the first chamber | |
822 | if (hit1Ptr->GetNSegments() == 0) | |
823 | hit1Ptr->SetIndexOfFirstSegment(segmentIndex); | |
824 | hit1Ptr->SetNSegments(hit1Ptr->GetNSegments() + 1); | |
825 | if (fPrintLevel >= 10) { | |
826 | cout << "segmentIndex(0...): " << segmentIndex | |
827 | << " distBend: " << distBend | |
828 | << " distNonBend: " << distNonBend | |
829 | << endl; | |
830 | segment->Dump(); | |
831 | cout << "HitForRec in first chamber" << endl; | |
832 | hit1Ptr->Dump(); | |
833 | cout << "HitForRec in second chamber" << endl; | |
834 | hit2Ptr->Dump(); | |
835 | }; | |
836 | // increment index for current segment | |
837 | segmentIndex++; | |
838 | } | |
839 | } //for (Int_t hit2 | |
840 | } // for (Int_t hit1... | |
841 | fNSegments[Station] = segmentIndex; | |
842 | // Sorting according to "impact parameter" if station(1..5) 4 or 5, | |
843 | // i.e. Station(0..4) 3 or 4, using the function "Compare". | |
844 | // After this sorting, it is impossible to use | |
845 | // the "fNSegments" and "fIndexOfFirstSegment" | |
846 | // of the HitForRec in the first chamber to explore all segments formed with it. | |
847 | // Is this sorting really needed ???? | |
848 | if ((Station == 3) || (Station == 4)) (fSegmentsPtr[Station])->Sort(); | |
849 | if (fPrintLevel >= 1) cout << "Station: " << Station << " NSegments: " | |
850 | << fNSegments[Station] << endl; | |
851 | return; | |
852 | } | |
853 | ||
854 | //__________________________________________________________________________ | |
855 | void AliMUONEventReconstructor::MakeTracks(void) | |
856 | { | |
857 | // To make the tracks, | |
858 | // from the list of segments and points in all stations | |
859 | if (fPrintLevel >= 1) cout << "enter MakeTracks" << endl; | |
8429a5e4 | 860 | // The order may be important for the following Reset's |
a9e2aefa | 861 | ResetTracks(); |
8429a5e4 | 862 | ResetTrackHits(); |
a9e2aefa | 863 | // Look for candidates from at least 3 aligned points in stations(1..) 4 and 5 |
864 | MakeTrackCandidates(); | |
865 | // Follow tracks in stations(1..) 3, 2 and 1 | |
866 | FollowTracks(); | |
8429a5e4 | 867 | // Remove double tracks |
868 | RemoveDoubleTracks(); | |
a9e2aefa | 869 | return; |
870 | } | |
871 | ||
872 | //__________________________________________________________________________ | |
873 | Int_t AliMUONEventReconstructor::MakeTrackCandidatesWithTwoSegments(AliMUONSegment *BegSegment) | |
874 | { | |
875 | // To make track candidates with two segments in stations(1..) 4 and 5, | |
876 | // the first segment being pointed to by "BegSegment". | |
877 | // Returns the number of such track candidates. | |
878 | Int_t endStation, iEndSegment, nbCan2Seg; | |
879 | AliMUONSegment *endSegment, *extrapSegment; | |
880 | AliMUONTrack *recTrack; | |
881 | Double_t mcsFactor; | |
882 | if (fPrintLevel >= 1) cout << "enter MakeTrackCandidatesWithTwoSegments" << endl; | |
883 | // Station for the end segment | |
884 | endStation = 7 - (BegSegment->GetHitForRec1())->GetChamberNumber() / 2; | |
885 | // multiple scattering factor corresponding to one chamber | |
886 | mcsFactor = 0.0136 / | |
887 | GetBendingMomentumFromImpactParam(BegSegment->GetBendingImpact()); | |
888 | mcsFactor = fChamberThicknessInX0 * mcsFactor * mcsFactor; | |
889 | // linear extrapolation to end station | |
890 | extrapSegment = | |
891 | BegSegment->CreateSegmentFromLinearExtrapToStation(endStation, mcsFactor); | |
892 | // number of candidates with 2 segments to 0 | |
893 | nbCan2Seg = 0; | |
894 | // Loop over segments in the end station | |
895 | for (iEndSegment = 0; iEndSegment < fNSegments[endStation]; iEndSegment++) { | |
896 | // pointer to segment | |
897 | endSegment = (AliMUONSegment*) ((*fSegmentsPtr[endStation])[iEndSegment]); | |
898 | // test compatibility between current segment and "extrapSegment" | |
04b5ea16 | 899 | // 4 because 4 quantities in chi2 |
a9e2aefa | 900 | if ((endSegment-> |
901 | NormalizedChi2WithSegment(extrapSegment, | |
902 | fMaxSigma2Distance)) <= 4.0) { | |
903 | // both segments compatible: | |
904 | // make track candidate from "begSegment" and "endSegment" | |
905 | if (fPrintLevel >= 2) | |
906 | cout << "TrackCandidate with Segment " << iEndSegment << | |
907 | " in Station(0..) " << endStation << endl; | |
908 | // flag for both segments in one track: | |
909 | // to be done in track constructor ???? | |
910 | BegSegment->SetInTrack(kTRUE); | |
911 | endSegment->SetInTrack(kTRUE); | |
912 | recTrack = new ((*fRecTracksPtr)[fNRecTracks]) | |
913 | AliMUONTrack(BegSegment, endSegment, this); | |
914 | fNRecTracks++; | |
915 | if (fPrintLevel >= 10) recTrack->RecursiveDump(); | |
916 | // increment number of track candidates with 2 segments | |
917 | nbCan2Seg++; | |
918 | } | |
919 | } // for (iEndSegment = 0;... | |
920 | delete extrapSegment; // should not delete HitForRec's it points to !!!! | |
921 | return nbCan2Seg; | |
922 | } | |
923 | ||
924 | //__________________________________________________________________________ | |
925 | Int_t AliMUONEventReconstructor::MakeTrackCandidatesWithOneSegmentAndOnePoint(AliMUONSegment *BegSegment) | |
926 | { | |
927 | // To make track candidates with one segment and one point | |
928 | // in stations(1..) 4 and 5, | |
929 | // the segment being pointed to by "BegSegment". | |
930 | Int_t ch, ch1, ch2, endStation, iHit, iHitMax, iHitMin, nbCan1Seg1Hit; | |
931 | AliMUONHitForRec *extrapHitForRec, *hit; | |
932 | AliMUONTrack *recTrack; | |
933 | Double_t mcsFactor; | |
934 | if (fPrintLevel >= 1) | |
935 | cout << "enter MakeTrackCandidatesWithOneSegmentAndOnePoint" << endl; | |
936 | // station for the end point | |
937 | endStation = 7 - (BegSegment->GetHitForRec1())->GetChamberNumber() / 2; | |
938 | // multiple scattering factor corresponding to one chamber | |
939 | mcsFactor = 0.0136 / | |
940 | GetBendingMomentumFromImpactParam(BegSegment->GetBendingImpact()); | |
941 | mcsFactor = fChamberThicknessInX0 * mcsFactor * mcsFactor; | |
942 | // first and second chambers(0..) in the end station | |
943 | ch1 = 2 * endStation; | |
944 | ch2 = ch1 + 1; | |
945 | // number of candidates to 0 | |
946 | nbCan1Seg1Hit = 0; | |
947 | // Loop over chambers of the end station | |
948 | for (ch = ch2; ch >= ch1; ch--) { | |
949 | // linear extrapolation to chamber | |
950 | extrapHitForRec = | |
951 | BegSegment->CreateHitForRecFromLinearExtrapToChamber(ch, mcsFactor); | |
952 | // limits for the hit index in the loop | |
953 | iHitMin = fIndexOfFirstHitForRecPerChamber[ch]; | |
954 | iHitMax = iHitMin + fNHitsForRecPerChamber[ch]; | |
955 | // Loop over HitForRec's in the chamber | |
956 | for (iHit = iHitMin; iHit < iHitMax; iHit++) { | |
957 | // pointer to HitForRec | |
958 | hit = (AliMUONHitForRec*) ((*fHitsForRecPtr)[iHit]); | |
959 | // test compatibility between current HitForRec and "extrapHitForRec" | |
04b5ea16 | 960 | // 2 because 2 quantities in chi2 |
a9e2aefa | 961 | if ((hit-> |
962 | NormalizedChi2WithHitForRec(extrapHitForRec, | |
963 | fMaxSigma2Distance)) <= 2.0) { | |
964 | // both HitForRec's compatible: | |
965 | // make track candidate from begSegment and current HitForRec | |
966 | if (fPrintLevel >= 2) | |
967 | cout << "TrackCandidate with HitForRec " << iHit << | |
968 | " in Chamber(0..) " << ch << endl; | |
969 | // flag for beginning segments in one track: | |
970 | // to be done in track constructor ???? | |
971 | BegSegment->SetInTrack(kTRUE); | |
972 | recTrack = new ((*fRecTracksPtr)[fNRecTracks]) | |
973 | AliMUONTrack(BegSegment, hit, this); | |
974 | // the right place to eliminate "double counting" ???? how ???? | |
975 | fNRecTracks++; | |
976 | if (fPrintLevel >= 10) recTrack->RecursiveDump(); | |
977 | // increment number of track candidates | |
978 | nbCan1Seg1Hit++; | |
979 | } | |
980 | } // for (iHit = iHitMin;... | |
981 | delete extrapHitForRec; | |
982 | } // for (ch = ch2;... | |
983 | return nbCan1Seg1Hit; | |
984 | } | |
985 | ||
986 | //__________________________________________________________________________ | |
987 | void AliMUONEventReconstructor::MakeTrackCandidates(void) | |
988 | { | |
989 | // To make track candidates | |
990 | // with at least 3 aligned points in stations(1..) 4 and 5 | |
991 | // (two Segment's or one Segment and one HitForRec) | |
992 | Int_t begStation, iBegSegment, nbCan1Seg1Hit, nbCan2Seg; | |
993 | AliMUONSegment *begSegment; | |
994 | if (fPrintLevel >= 1) cout << "enter MakeTrackCandidates" << endl; | |
995 | // Loop over stations(1..) 5 and 4 for the beginning segment | |
996 | for (begStation = 4; begStation > 2; begStation--) { | |
997 | // Loop over segments in the beginning station | |
998 | for (iBegSegment = 0; iBegSegment < fNSegments[begStation]; iBegSegment++) { | |
999 | // pointer to segment | |
1000 | begSegment = (AliMUONSegment*) ((*fSegmentsPtr[begStation])[iBegSegment]); | |
1001 | if (fPrintLevel >= 2) | |
1002 | cout << "look for TrackCandidate's with Segment " << iBegSegment << | |
1003 | " in Station(0..) " << begStation << endl; | |
1004 | // Look for track candidates with two segments, | |
1005 | // "begSegment" and all compatible segments in other station. | |
1006 | // Only for beginning station(1..) 5 | |
1007 | // because candidates with 2 segments have to looked for only once. | |
1008 | if (begStation == 4) | |
1009 | nbCan2Seg = MakeTrackCandidatesWithTwoSegments(begSegment); | |
956019b6 | 1010 | // Look for track candidates with one segment and one point, |
a9e2aefa | 1011 | // "begSegment" and all compatible HitForRec's in other station. |
1012 | // Only if "begSegment" does not belong already to a track candidate. | |
1013 | // Is that a too strong condition ???? | |
1014 | if (!(begSegment->GetInTrack())) | |
1015 | nbCan1Seg1Hit = MakeTrackCandidatesWithOneSegmentAndOnePoint(begSegment); | |
1016 | } // for (iBegSegment = 0;... | |
1017 | } // for (begStation = 4;... | |
1018 | return; | |
1019 | } | |
1020 | ||
1021 | //__________________________________________________________________________ | |
1022 | void AliMUONEventReconstructor::FollowTracks(void) | |
1023 | { | |
1024 | // Follow tracks in stations(1..) 3, 2 and 1 | |
04b5ea16 | 1025 | // too long: should be made more modular !!!! |
a9e2aefa | 1026 | AliMUONHitForRec *bestHit, *extrapHit, *hit; |
1027 | AliMUONSegment *bestSegment, *extrapSegment, *segment; | |
04b5ea16 | 1028 | AliMUONTrack *track, *nextTrack; |
1029 | AliMUONTrackParam *trackParam1, trackParam[2], trackParamVertex; | |
ecfa008b | 1030 | // -1 to avoid compilation warnings |
1031 | Int_t ch = -1, chInStation, chBestHit = -1, iHit, iSegment, station, trackIndex; | |
04b5ea16 | 1032 | Double_t bestChi2, chi2, dZ1, dZ2, dZ3, maxSigma2Distance, mcsFactor; |
9cbdf048 | 1033 | AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ???? |
04b5ea16 | 1034 | // local maxSigma2Distance, for easy increase in testing |
1035 | maxSigma2Distance = fMaxSigma2Distance; | |
a9e2aefa | 1036 | if (fPrintLevel >= 2) |
1037 | cout << "enter FollowTracks" << endl; | |
1038 | // Loop over track candidates | |
04b5ea16 | 1039 | track = (AliMUONTrack*) fRecTracksPtr->First(); |
1040 | trackIndex = -1; | |
1041 | while (track) { | |
1042 | // Follow function for each track candidate ???? | |
1043 | trackIndex++; | |
1044 | nextTrack = (AliMUONTrack*) fRecTracksPtr->After(track); // prepare next track | |
a9e2aefa | 1045 | if (fPrintLevel >= 2) |
1046 | cout << "FollowTracks: track candidate(0..): " << trackIndex << endl; | |
956019b6 | 1047 | // Fit track candidate |
1048 | track->SetFitMCS(0); // without multiple Coulomb scattering | |
1049 | track->SetFitNParam(3); // with 3 parameters (X = Y = 0) | |
1050 | track->SetFitStart(0); // from parameters at vertex | |
1051 | track->Fit(); | |
a9e2aefa | 1052 | if (fPrintLevel >= 10) { |
1053 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
956019b6 | 1054 | << " after fit in stations(0..) 3 and 4" << endl; |
a9e2aefa | 1055 | track->RecursiveDump(); |
1056 | } | |
1057 | // Loop over stations(1..) 3, 2 and 1 | |
04b5ea16 | 1058 | // something SPECIAL for stations 2 and 1 for majority 3 coincidence ???? |
1059 | // otherwise: majority coincidence 2 !!!! | |
a9e2aefa | 1060 | for (station = 2; station >= 0; station--) { |
1061 | // Track parameters at first track hit (smallest Z) | |
1062 | trackParam1 = ((AliMUONTrackHit*) | |
1063 | (track->GetTrackHitsPtr()->First()))->GetTrackParam(); | |
1064 | // extrapolation to station | |
1065 | trackParam1->ExtrapToStation(station, trackParam); | |
79e1e601 | 1066 | extrapSegment = new AliMUONSegment(); // empty segment |
a9e2aefa | 1067 | // multiple scattering factor corresponding to one chamber |
1068 | // and momentum in bending plane (not total) | |
1069 | mcsFactor = 0.0136 * trackParam1->GetInverseBendingMomentum(); | |
1070 | mcsFactor = fChamberThicknessInX0 * mcsFactor * mcsFactor; | |
1071 | // Z difference from previous station | |
9cbdf048 | 1072 | dZ1 = (&(pMUON->Chamber(2 * station)))->Z() - |
1073 | (&(pMUON->Chamber(2 * station + 2)))->Z(); | |
a9e2aefa | 1074 | // Z difference between the two previous stations |
9cbdf048 | 1075 | dZ2 = (&(pMUON->Chamber(2 * station + 2)))->Z() - |
1076 | (&(pMUON->Chamber(2 * station + 4)))->Z(); | |
04b5ea16 | 1077 | // Z difference between the two chambers in the previous station |
1078 | dZ3 = (&(pMUON->Chamber(2 * station)))->Z() - | |
1079 | (&(pMUON->Chamber(2 * station + 1)))->Z(); | |
1080 | extrapSegment->SetBendingCoorReso2(fBendingResolution * fBendingResolution); | |
1081 | extrapSegment-> | |
1082 | SetNonBendingCoorReso2(fNonBendingResolution * fNonBendingResolution); | |
1083 | extrapSegment->UpdateFromStationTrackParam | |
1084 | (trackParam, mcsFactor, dZ1, dZ2, dZ3, station, | |
1085 | trackParam1->GetInverseBendingMomentum()); | |
a9e2aefa | 1086 | bestChi2 = 5.0; |
1087 | bestSegment = NULL; | |
1088 | if (fPrintLevel >= 10) { | |
1089 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1090 | << " Look for segment in station(0..): " << station << endl; | |
1091 | } | |
1092 | // Loop over segments in station | |
1093 | for (iSegment = 0; iSegment < fNSegments[station]; iSegment++) { | |
1094 | // Look for best compatible Segment in station | |
1095 | // should consider all possibilities ???? | |
1096 | // multiple scattering ???? | |
1097 | // separation in 2 functions: Segment and HitForRec ???? | |
1098 | segment = (AliMUONSegment*) ((*fSegmentsPtr[station])[iSegment]); | |
1099 | chi2 = segment->NormalizedChi2WithSegment(extrapSegment, maxSigma2Distance); | |
1100 | if (chi2 < bestChi2) { | |
1101 | // update best Chi2 and Segment if better found | |
1102 | bestSegment = segment; | |
1103 | bestChi2 = chi2; | |
1104 | } | |
1105 | } | |
1106 | if (bestSegment) { | |
1107 | // best segment found: add it to track candidate | |
1108 | track->AddSegment(bestSegment); | |
1109 | // set track parameters at these two TrakHit's | |
1110 | track->SetTrackParamAtHit(track->GetNTrackHits() - 2, &(trackParam[0])); | |
1111 | track->SetTrackParamAtHit(track->GetNTrackHits() - 1, &(trackParam[1])); | |
1112 | if (fPrintLevel >= 10) { | |
1113 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1114 | << " Added segment in station(0..): " << station << endl; | |
1115 | track->RecursiveDump(); | |
1116 | } | |
1117 | } | |
1118 | else { | |
1119 | // No best segment found: | |
1120 | // Look for best compatible HitForRec in station: | |
1121 | // should consider all possibilities ???? | |
1122 | // multiple scattering ???? do about like for extrapSegment !!!! | |
79e1e601 | 1123 | extrapHit = new AliMUONHitForRec(); // empty hit |
a9e2aefa | 1124 | bestChi2 = 3.0; |
1125 | bestHit = NULL; | |
1126 | if (fPrintLevel >= 10) { | |
1127 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1128 | << " Segment not found, look for hit in station(0..): " << station | |
1129 | << endl; | |
1130 | } | |
1131 | // Loop over chambers of the station | |
d82671a0 | 1132 | for (chInStation = 0; chInStation < 2; chInStation++) { |
a9e2aefa | 1133 | // coordinates of extrapolated hit |
d82671a0 | 1134 | extrapHit-> |
1135 | SetBendingCoor((&(trackParam[chInStation]))->GetBendingCoor()); | |
1136 | extrapHit-> | |
1137 | SetNonBendingCoor((&(trackParam[chInStation]))->GetNonBendingCoor()); | |
a9e2aefa | 1138 | // resolutions from "extrapSegment" |
1139 | extrapHit->SetBendingReso2(extrapSegment->GetBendingCoorReso2()); | |
1140 | extrapHit->SetNonBendingReso2(extrapSegment->GetNonBendingCoorReso2()); | |
1141 | // Loop over hits in the chamber | |
956019b6 | 1142 | ch = 2 * station + chInStation; |
a9e2aefa | 1143 | for (iHit = fIndexOfFirstHitForRecPerChamber[ch]; |
1144 | iHit < fIndexOfFirstHitForRecPerChamber[ch] + | |
1145 | fNHitsForRecPerChamber[ch]; | |
1146 | iHit++) { | |
1147 | hit = (AliMUONHitForRec*) ((*fHitsForRecPtr)[iHit]); | |
1148 | // condition for hit not already in segment ???? | |
1149 | chi2 = hit->NormalizedChi2WithHitForRec(extrapHit, maxSigma2Distance); | |
1150 | if (chi2 < bestChi2) { | |
1151 | // update best Chi2 and HitForRec if better found | |
1152 | bestHit = hit; | |
1153 | bestChi2 = chi2; | |
d82671a0 | 1154 | chBestHit = chInStation; |
a9e2aefa | 1155 | } |
1156 | } | |
1157 | } | |
1158 | if (bestHit) { | |
1159 | // best hit found: add it to track candidate | |
1160 | track->AddHitForRec(bestHit); | |
956019b6 | 1161 | // set track parameters at this TrackHit |
a9e2aefa | 1162 | track->SetTrackParamAtHit(track->GetNTrackHits() - 1, |
1163 | &(trackParam[chBestHit])); | |
1164 | if (fPrintLevel >= 10) { | |
1165 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1166 | << " Added hit in station(0..): " << station << endl; | |
1167 | track->RecursiveDump(); | |
1168 | } | |
1169 | } | |
1170 | else { | |
8429a5e4 | 1171 | // Remove current track candidate |
1172 | // and corresponding TrackHit's, ... | |
1173 | track->Remove(); | |
04b5ea16 | 1174 | delete extrapSegment; |
a9e2aefa | 1175 | break; // stop the search for this candidate: |
1176 | // exit from the loop over station | |
1177 | } | |
1178 | } | |
04b5ea16 | 1179 | delete extrapSegment; |
a9e2aefa | 1180 | // Sort track hits according to increasing Z |
1181 | track->GetTrackHitsPtr()->Sort(); | |
1182 | // Update track parameters at first track hit (smallest Z) | |
1183 | trackParam1 = ((AliMUONTrackHit*) | |
1184 | (track->GetTrackHitsPtr()->First()))->GetTrackParam(); | |
956019b6 | 1185 | // Track fit |
04b5ea16 | 1186 | // with multiple Coulomb scattering if all stations |
1187 | if (station == 0) track->SetFitMCS(1); | |
956019b6 | 1188 | // without multiple Coulomb scattering if not all stations |
04b5ea16 | 1189 | else track->SetFitMCS(0); |
956019b6 | 1190 | track->SetFitNParam(5); // with 5 parameters (momentum and position) |
1191 | track->SetFitStart(1); // from parameters at first hit | |
1192 | track->Fit(); | |
a9e2aefa | 1193 | if (fPrintLevel >= 10) { |
1194 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1195 | << " after fit from station(0..): " << station << " to 4" << endl; | |
1196 | track->RecursiveDump(); | |
1197 | } | |
04b5ea16 | 1198 | // Track extrapolation to the vertex through the absorber (Branson) |
956019b6 | 1199 | // after going through the first station |
04b5ea16 | 1200 | if (station == 0) { |
1201 | trackParamVertex = *trackParam1; | |
1202 | (&trackParamVertex)->ExtrapToVertex(); | |
1203 | track->SetTrackParamAtVertex(&trackParamVertex); | |
6ae236ee | 1204 | if (fPrintLevel >= 1) { |
1205 | cout << "FollowTracks: track candidate(0..): " << trackIndex | |
1206 | << " after extrapolation to vertex" << endl; | |
1207 | track->RecursiveDump(); | |
1208 | } | |
04b5ea16 | 1209 | } |
a9e2aefa | 1210 | } // for (station = 2;... |
04b5ea16 | 1211 | // go really to next track |
1212 | track = nextTrack; | |
1213 | } // while (track) | |
1214 | // Compression of track array (necessary after Remove ????) | |
1215 | fRecTracksPtr->Compress(); | |
1216 | return; | |
1217 | } | |
1218 | ||
1219 | //__________________________________________________________________________ | |
8429a5e4 | 1220 | void AliMUONEventReconstructor::RemoveDoubleTracks(void) |
1221 | { | |
1222 | // To remove double tracks. | |
1223 | // Tracks are considered identical | |
1224 | // if they have at least half of their hits in common. | |
1225 | // Among two identical tracks, one keeps the track with the larger number of hits | |
1226 | // or, if these numbers are equal, the track with the minimum Chi2. | |
1227 | AliMUONTrack *track1, *track2, *trackToRemove; | |
1228 | Bool_t identicalTracks; | |
1229 | Int_t hitsInCommon, nHits1, nHits2; | |
1230 | identicalTracks = kTRUE; | |
1231 | while (identicalTracks) { | |
1232 | identicalTracks = kFALSE; | |
1233 | // Loop over first track of the pair | |
1234 | track1 = (AliMUONTrack*) fRecTracksPtr->First(); | |
1235 | while (track1 && (!identicalTracks)) { | |
1236 | nHits1 = track1->GetNTrackHits(); | |
1237 | // Loop over second track of the pair | |
1238 | track2 = (AliMUONTrack*) fRecTracksPtr->After(track1); | |
1239 | while (track2 && (!identicalTracks)) { | |
1240 | nHits2 = track2->GetNTrackHits(); | |
1241 | // number of hits in common between two tracks | |
1242 | hitsInCommon = track1->HitsInCommon(track2); | |
1243 | // check for identical tracks | |
1244 | if ((4 * hitsInCommon) >= (nHits1 + nHits2)) { | |
1245 | identicalTracks = kTRUE; | |
1246 | // decide which track to remove | |
1247 | if (nHits1 > nHits2) trackToRemove = track2; | |
1248 | else if (nHits1 < nHits2) trackToRemove = track1; | |
1249 | else if ((track1->GetFitFMin()) < (track2->GetFitFMin())) | |
1250 | trackToRemove = track2; | |
1251 | else trackToRemove = track1; | |
1252 | // remove it | |
1253 | trackToRemove->Remove(); | |
1254 | } | |
1255 | track2 = (AliMUONTrack*) fRecTracksPtr->After(track2); | |
1256 | } // track2 | |
1257 | track1 = (AliMUONTrack*) fRecTracksPtr->After(track1); | |
1258 | } // track1 | |
1259 | } | |
1260 | return; | |
1261 | } | |
1262 | ||
1263 | //__________________________________________________________________________ | |
04b5ea16 | 1264 | void AliMUONEventReconstructor::EventDump(void) |
1265 | { | |
1266 | // Dump reconstructed event (track parameters at vertex and at first hit), | |
1267 | // and the particle parameters | |
1268 | ||
1269 | AliMUONTrack *track; | |
1270 | AliMUONTrackParam *trackParam, *trackParam1; | |
1271 | TClonesArray *particles; // pointer to the particle list | |
1272 | TParticle *p; | |
1273 | Double_t bendingSlope, nonBendingSlope, pYZ; | |
1274 | Double_t pX, pY, pZ, x, y, z, c; | |
1275 | Int_t np, trackIndex, nTrackHits; | |
1276 | ||
1277 | if (fPrintLevel >= 1) cout << "****** enter EventDump ******" << endl; | |
1278 | if (fPrintLevel >= 1) { | |
1279 | cout << " Number of Reconstructed tracks :" << fNRecTracks << endl; | |
1280 | } | |
1281 | fRecTracksPtr->Compress(); // for simple loop without "Next" since no hole | |
1282 | // Loop over reconstructed tracks | |
1283 | for (trackIndex = 0; trackIndex < fNRecTracks; trackIndex++) { | |
1284 | if (fPrintLevel >= 1) | |
1285 | cout << " track number: " << trackIndex << endl; | |
1286 | // function for each track for modularity ???? | |
1287 | track = (AliMUONTrack*) ((*fRecTracksPtr)[trackIndex]); | |
1288 | nTrackHits = track->GetNTrackHits(); | |
1289 | if (fPrintLevel >= 1) | |
1290 | cout << " number of track hits: " << nTrackHits << endl; | |
1291 | // track parameters at Vertex | |
1292 | trackParam = track->GetTrackParamAtVertex(); | |
1293 | x = trackParam->GetNonBendingCoor(); | |
1294 | y = trackParam->GetBendingCoor(); | |
1295 | z = trackParam->GetZ(); | |
1296 | bendingSlope = trackParam->GetBendingSlope(); | |
1297 | nonBendingSlope = trackParam->GetNonBendingSlope(); | |
1298 | pYZ = 1/TMath::Abs(trackParam->GetInverseBendingMomentum()); | |
1299 | pZ = pYZ/TMath::Sqrt(1+bendingSlope*bendingSlope); | |
1300 | pX = pZ * nonBendingSlope; | |
1301 | pY = pZ * bendingSlope; | |
1302 | c = TMath::Sign(1.0, trackParam->GetInverseBendingMomentum()); | |
1303 | if (fPrintLevel >= 1) | |
1304 | printf(" track parameters at Vertex z= %f: X= %f Y= %f pX= %f pY= %f pZ= %f c= %f\n", | |
1305 | z, x, y, pX, pY, pZ, c); | |
1306 | ||
1307 | // track parameters at first hit | |
1308 | trackParam1 = ((AliMUONTrackHit*) | |
1309 | (track->GetTrackHitsPtr()->First()))->GetTrackParam(); | |
1310 | x = trackParam1->GetNonBendingCoor(); | |
1311 | y = trackParam1->GetBendingCoor(); | |
1312 | z = trackParam1->GetZ(); | |
1313 | bendingSlope = trackParam1->GetBendingSlope(); | |
1314 | nonBendingSlope = trackParam1->GetNonBendingSlope(); | |
1315 | pYZ = 1/TMath::Abs(trackParam1->GetInverseBendingMomentum()); | |
1316 | pZ = pYZ/TMath::Sqrt(1.0 + bendingSlope * bendingSlope); | |
1317 | pX = pZ * nonBendingSlope; | |
1318 | pY = pZ * bendingSlope; | |
1319 | c = TMath::Sign(1.0, trackParam1->GetInverseBendingMomentum()); | |
1320 | if (fPrintLevel >= 1) | |
1321 | printf(" track parameters at z= %f: X= %f Y= %f pX= %f pY= %f pZ= %f c= %f\n", | |
1322 | z, x, y, pX, pY, pZ, c); | |
1323 | } | |
1324 | // informations about generated particles | |
1325 | particles = gAlice->Particles(); | |
1326 | np = particles->GetEntriesFast(); | |
1327 | printf(" **** number of generated particles: %d \n", np); | |
1328 | ||
1329 | for (Int_t iPart = 0; iPart < np; iPart++) { | |
1330 | p = (TParticle*) particles->UncheckedAt(iPart); | |
1331 | printf(" particle %d: type= %d px= %f py= %f pz= %f pdg= %d\n", | |
1332 | iPart, p->GetPdgCode(), p->Px(), p->Py(), p->Pz(), p->GetPdgCode()); | |
1333 | } | |
a9e2aefa | 1334 | return; |
1335 | } | |
1336 |