Change const char * by TString, change AliInfos per AliPreprocessor::Log or AliDebug
[u/mrichter/AliRoot.git] / MUON / AliMUONVTrackReconstructor.cxx
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8d0843c6 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/* $Id$ */
17
18////////////////////////////////////
19//
20// Virtual MUON track reconstructor in ALICE (class renamed from AliMUONEventReconstructor)
21//
22// This class contains as data:
23// * a pointer to the array of hits to be reconstructed (the event)
24// * a pointer to the array of segments made with these hits inside each station
25// * a pointer to the array of reconstructed tracks
26//
27// It contains as methods, among others:
28// * EventReconstruct to build the muon tracks
29// * EventReconstructTrigger to build the trigger tracks
30//
31////////////////////////////////////
32
33#include <stdlib.h>
34#include <Riostream.h>
35#include <TTree.h>
36
37#include "AliMUONVTrackReconstructor.h"
38#include "AliMUONData.h"
39#include "AliMUONConstants.h"
40#include "AliMUONHitForRec.h"
41#include "AliMUONTriggerTrack.h"
e1a10d41 42#include "AliMUONTriggerCircuit.h"
8d0843c6 43#include "AliMUONLocalTrigger.h"
44#include "AliMUONGlobalTrigger.h"
45#include "AliMUONSegment.h"
46#include "AliMUONTrack.h"
37827b29 47#include "AliMUONTrackParam.h"
48#include "AliMUONTrackExtrap.h"
8d0843c6 49#include "AliMagF.h"
50#include "AliLog.h"
51#include "AliTracker.h"
52
53ClassImp(AliMUONVTrackReconstructor) // Class implementation in ROOT context
54
55//************* Defaults parameters for reconstruction
56const Double_t AliMUONVTrackReconstructor::fgkDefaultMinBendingMomentum = 3.0;
57const Double_t AliMUONVTrackReconstructor::fgkDefaultMaxBendingMomentum = 3000.0;
58const Double_t AliMUONVTrackReconstructor::fgkDefaultBendingResolution = 0.01;
59const Double_t AliMUONVTrackReconstructor::fgkDefaultNonBendingResolution = 0.144;
60const Double_t AliMUONVTrackReconstructor::fgkDefaultMaxSigma2Distance = 16.0;
61// Simple magnetic field:
62// Value taken from macro MUONtracking.C: 0.7 T, hence 7 kG
63// Length and Position from reco_muon.F, with opposite sign:
64// Length = ZMAGEND-ZCOIL
65// Position = (ZMAGEND+ZCOIL)/2
66// to be ajusted differently from real magnetic field ????
67const Double_t AliMUONVTrackReconstructor::fgkDefaultSimpleBValue = 7.0;
68const Double_t AliMUONVTrackReconstructor::fgkDefaultSimpleBLength = 428.0;
69const Double_t AliMUONVTrackReconstructor::fgkDefaultSimpleBPosition = 1019.0;
70
71//__________________________________________________________________________
72AliMUONVTrackReconstructor::AliMUONVTrackReconstructor(AliMUONData* data)
73 : TObject(),
74 fMinBendingMomentum(fgkDefaultMinBendingMomentum),
75 fMaxBendingMomentum(fgkDefaultMaxBendingMomentum),
76 fBendingResolution(fgkDefaultBendingResolution),
77 fNonBendingResolution(fgkDefaultNonBendingResolution),
78 fMaxSigma2Distance(fgkDefaultMaxSigma2Distance),
79 fChamberThicknessInX0(AliMUONConstants::DefaultChamberThicknessInX0()),
80 fSimpleBValue(fgkDefaultSimpleBValue),
81 fSimpleBLength(fgkDefaultSimpleBLength),
82 fSimpleBPosition(fgkDefaultSimpleBPosition),
83 fSegmentMaxDistBending(0x0),
84 fSegmentMaxDistNonBending(0x0),
85 fHitsForRecPtr(0x0),
86 fNHitsForRec(0),
87 fNHitsForRecPerChamber(0x0),
88 fIndexOfFirstHitForRecPerChamber(0x0),
89 fSegmentsPtr(0x0),
90 fNSegments(0x0),
91 fRecTracksPtr(0x0),
92 fNRecTracks(0),
93 fMUONData(data),
94 fTriggerTrack(new AliMUONTriggerTrack()),
95 fTriggerCircuit(0x0)
96{
97 /// Constructor for class AliMUONVTrackReconstructor
98 fSegmentMaxDistBending = new Double_t[AliMUONConstants::NTrackingSt()];
99 fSegmentMaxDistNonBending = new Double_t[AliMUONConstants::NTrackingSt()];
100 fNHitsForRecPerChamber = new Int_t[AliMUONConstants::NTrackingCh()];
101 fIndexOfFirstHitForRecPerChamber = new Int_t[AliMUONConstants::NTrackingCh()];
102
103 SetReconstructionParametersToDefaults();
104
105 // Memory allocation for the TClonesArray of hits for reconstruction
106 // Is 10000 the right size ????
107 fHitsForRecPtr = new TClonesArray("AliMUONHitForRec", 10000);
108
109 // Memory allocation for the TClonesArray's of segments in stations
110 // Is 2000 the right size ????
111 fSegmentsPtr = new TClonesArray*[AliMUONConstants::NTrackingSt()];
112 fNSegments = new Int_t[AliMUONConstants::NTrackingSt()];
113 for (Int_t st = 0; st < AliMUONConstants::NTrackingSt(); st++) {
114 fSegmentsPtr[st] = new TClonesArray("AliMUONSegment", 2000);
115 fNSegments[st] = 0; // really needed or GetEntriesFast sufficient ????
116 }
117
118 const AliMagF* kField = AliTracker::GetFieldMap();
119 if (!kField) AliFatal("No field available");
120 // Sign of fSimpleBValue according to sign of Bx value at (50,50,-950).
121 Float_t b[3], x[3];
122 x[0] = 50.; x[1] = 50.; x[2] = -950.;
123 kField->Field(x,b);
124
125 fSimpleBValue = TMath::Sign(fSimpleBValue,(Double_t) b[0]);
126 fSimpleBPosition = TMath::Sign(fSimpleBPosition,(Double_t) x[2]);
127 // See how to get fSimple(BValue, BLength, BPosition)
128 // automatically calculated from the actual magnetic field ????
37827b29 129
130 // set the magnetic field for track extrapolations
131 AliMUONTrackExtrap::SetField(kField);
8d0843c6 132}
133
134 //__________________________________________________________________________
135AliMUONVTrackReconstructor::~AliMUONVTrackReconstructor(void)
136{
137 /// Destructor for class AliMUONVTrackReconstructor
138 delete [] fSegmentMaxDistBending;
139 delete [] fSegmentMaxDistNonBending;
140 delete [] fNHitsForRecPerChamber;
141 delete [] fIndexOfFirstHitForRecPerChamber;
142 delete fTriggerTrack;
143 delete fHitsForRecPtr;
144 // Correct destruction of everything ????
145 for (Int_t st = 0; st < AliMUONConstants::NTrackingSt(); st++) delete fSegmentsPtr[st];
146 delete [] fSegmentsPtr;
147 delete [] fNSegments;
148}
149
150 //__________________________________________________________________________
151void AliMUONVTrackReconstructor::SetReconstructionParametersToDefaults(void)
152{
153 /// Set reconstruction parameters for making segments to default values
154 // Would be much more convenient with a structure (or class) ????
155
156 // ******** Parameters for making segments
157 // should be parametrized ????
158 // according to interval between chambers in a station ????
159 // Maximum distance in non bending plane
160 // 5 * 0.22 just to remember the way it was made in TRACKF_STAT
161 // SIGCUT*DYMAX(IZ)
162 for (Int_t st = 0; st < AliMUONConstants::NTrackingCh()/2; st++)
163 fSegmentMaxDistNonBending[st] = 5. * 0.22;
164 // Maximum distance in bending plane:
165 // values from TRACKF_STAT, corresponding to (J psi 20cm),
166 // scaled to the real distance between chambers in a station
167 fSegmentMaxDistBending[0] = TMath::Abs( 1.5 *
168 (AliMUONConstants::DefaultChamberZ(1) - AliMUONConstants::DefaultChamberZ(0)) / 20.0);
169 fSegmentMaxDistBending[1] = TMath::Abs( 1.5 *
170 (AliMUONConstants::DefaultChamberZ(3) - AliMUONConstants::DefaultChamberZ(2)) / 20.0);
171 fSegmentMaxDistBending[2] = TMath::Abs( 3.0 *
172 (AliMUONConstants::DefaultChamberZ(5) - AliMUONConstants::DefaultChamberZ(4)) / 20.0);
173 fSegmentMaxDistBending[3] = TMath::Abs( 6.0 *
174 (AliMUONConstants::DefaultChamberZ(7) - AliMUONConstants::DefaultChamberZ(6)) / 20.0);
175 fSegmentMaxDistBending[4] = TMath::Abs( 6.0 *
176 (AliMUONConstants::DefaultChamberZ(9) - AliMUONConstants::DefaultChamberZ(8)) / 20.0);
177
178 return;
179}
180
181 //__________________________________________________________________________
182void AliMUONVTrackReconstructor::EventReconstruct(void)
183{
184 // To reconstruct one event
185 AliDebug(1,"Enter EventReconstruct");
186 ResetTracks(); //AZ
187 ResetSegments(); //AZ
188 ResetHitsForRec(); //AZ
189 AddHitsForRecFromRawClusters();
190 MakeSegments();
191 MakeTracks();
192 if (fMUONData->IsTriggerTrackBranchesInTree())
193 ValidateTracksWithTrigger();
194
195 // Add tracks to MUON data container
196 for(Int_t i=0; i<fNRecTracks; i++) {
197 AliMUONTrack * track = (AliMUONTrack*) fRecTracksPtr->At(i);
198 fMUONData->AddRecTrack(*track);
199 }
200}
201
202 //__________________________________________________________________________
203void AliMUONVTrackReconstructor::ResetTracks(void)
204{
205 /// To reset the TClonesArray of reconstructed tracks
206 if (fRecTracksPtr) fRecTracksPtr->Delete();
207 // Delete in order that the Track destructors are called,
208 // hence the space for the TClonesArray of pointers to TrackHit's is freed
209 fNRecTracks = 0;
210 return;
211}
212
213 //__________________________________________________________________________
214void AliMUONVTrackReconstructor::ResetSegments(void)
215{
216 /// To reset the TClonesArray of segments and the number of Segments for all stations
217 for (Int_t st = 0; st < AliMUONConstants::NTrackingCh()/2; st++) {
218 if (fSegmentsPtr[st]) fSegmentsPtr[st]->Clear();
219 fNSegments[st] = 0;
220 }
221 return;
222}
223
224 //__________________________________________________________________________
225void AliMUONVTrackReconstructor::ResetHitsForRec(void)
226{
227 /// To reset the array and the number of HitsForRec,
228 /// and also the number of HitsForRec
229 /// and the index of the first HitForRec per chamber
230 if (fHitsForRecPtr) fHitsForRecPtr->Delete();
231 fNHitsForRec = 0;
232 for (Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++)
233 fNHitsForRecPerChamber[ch] = fIndexOfFirstHitForRecPerChamber[ch] = 0;
234 return;
235}
236
237 //__________________________________________________________________________
238void AliMUONVTrackReconstructor::SortHitsForRecWithIncreasingChamber()
239{
240 /// Sort HitsForRec's in increasing order with respect to chamber number.
241 /// Uses the function "Compare".
242 /// Update the information for HitsForRec per chamber too.
243 Int_t ch, nhits, prevch;
244 fHitsForRecPtr->Sort();
245 for (ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++) {
246 fNHitsForRecPerChamber[ch] = 0;
247 fIndexOfFirstHitForRecPerChamber[ch] = 0;
248 }
249 prevch = 0; // previous chamber
250 nhits = 0; // number of hits in current chamber
251 // Loop over HitsForRec
252 for (Int_t hit = 0; hit < fNHitsForRec; hit++) {
253 // chamber number (0...)
254 ch = ((AliMUONHitForRec*) ((*fHitsForRecPtr)[hit]))->GetChamberNumber();
255 // increment number of hits in current chamber
256 (fNHitsForRecPerChamber[ch])++;
257 // update index of first HitForRec in current chamber
258 // if chamber number different from previous one
259 if (ch != prevch) {
260 fIndexOfFirstHitForRecPerChamber[ch] = hit;
261 prevch = ch;
262 }
263 }
264 return;
265}
266
267 //__________________________________________________________________________
268void AliMUONVTrackReconstructor::MakeSegmentsPerStation(Int_t Station)
269{
270 /// To make the list of segments in station number "Station" (0...)
271 /// from the list of hits to be reconstructed.
272 /// Updates "fNSegments"[Station].
273 /// Segments in stations 4 and 5 are sorted
274 /// according to increasing absolute value of "impact parameter"
275 AliMUONHitForRec *hit1Ptr, *hit2Ptr;
276 AliMUONSegment *segment;
277 Bool_t last2st;
278 Double_t bendingSlope, distBend, distNonBend, extBendCoor, extNonBendCoor,
279 impactParam = 0., maxImpactParam = 0., minImpactParam = 0.; // =0 to avoid compilation warnings.
280 AliDebug(1,Form("Enter MakeSegmentsPerStation (0...) %d",Station));
281 // first and second chambers (0...) in the station
282 Int_t ch1 = 2 * Station;
283 Int_t ch2 = ch1 + 1;
284 // variable true for stations downstream of the dipole:
285 // Station(0..4) equal to 3 or 4
286 if ((Station == 3) || (Station == 4)) {
287 last2st = kTRUE;
288 // maximum impact parameter (cm) according to fMinBendingMomentum...
289 maxImpactParam =
290 TMath::Abs(GetImpactParamFromBendingMomentum(fMinBendingMomentum));
291 // minimum impact parameter (cm) according to fMaxBendingMomentum...
292 minImpactParam =
293 TMath::Abs(GetImpactParamFromBendingMomentum(fMaxBendingMomentum));
294 }
295 else last2st = kFALSE;
296 // extrapolation factor from Z of first chamber to Z of second chamber
297 // dZ to be changed to take into account fine structure of chambers ????
298 Double_t extrapFact;
299 // index for current segment
300 Int_t segmentIndex = 0;
301 // Loop over HitsForRec in the first chamber of the station
302 for (Int_t hit1 = fIndexOfFirstHitForRecPerChamber[ch1];
303 hit1 < fIndexOfFirstHitForRecPerChamber[ch1] + fNHitsForRecPerChamber[ch1];
304 hit1++) {
305 // pointer to the HitForRec
306 hit1Ptr = (AliMUONHitForRec*) ((*fHitsForRecPtr)[hit1]);
307 // extrapolation,
308 // on the straight line joining the HitForRec to the vertex (0,0,0),
309 // to the Z of the second chamber of the station
310 // Loop over HitsForRec in the second chamber of the station
311 for (Int_t hit2 = fIndexOfFirstHitForRecPerChamber[ch2];
312 hit2 < fIndexOfFirstHitForRecPerChamber[ch2] + fNHitsForRecPerChamber[ch2];
313 hit2++) {
314 // pointer to the HitForRec
315 hit2Ptr = (AliMUONHitForRec*) ((*fHitsForRecPtr)[hit2]);
316 // absolute values of distances, in bending and non bending planes,
317 // between the HitForRec in the second chamber
318 // and the previous extrapolation
319 extrapFact = hit2Ptr->GetZ()/ hit1Ptr->GetZ();
320 extBendCoor = extrapFact * hit1Ptr->GetBendingCoor();
321 extNonBendCoor = extrapFact * hit1Ptr->GetNonBendingCoor();
322 distBend = TMath::Abs(hit2Ptr->GetBendingCoor() - extBendCoor);
323 distNonBend = TMath::Abs(hit2Ptr->GetNonBendingCoor() - extNonBendCoor);
324 if (last2st) {
325 // bending slope
326 if ( hit1Ptr->GetZ() - hit2Ptr->GetZ() != 0.0 ) {
327 bendingSlope = (hit1Ptr->GetBendingCoor() - hit2Ptr->GetBendingCoor()) /
328 (hit1Ptr->GetZ() - hit2Ptr->GetZ());
329 // absolute value of impact parameter
330 impactParam =
331 TMath::Abs(hit1Ptr->GetBendingCoor() - hit1Ptr->GetZ() * bendingSlope);
332 }
333 else {
334 AliWarning("hit1Ptr->GetZ() = hit2Ptr->GetZ(): impactParam set to maxImpactParam");
335 impactParam = maxImpactParam;
336 }
337 }
338 // check for distances not too large,
339 // and impact parameter not too big if stations downstream of the dipole.
340 // Conditions "distBend" and "impactParam" correlated for these stations ????
341 if ((distBend < fSegmentMaxDistBending[Station]) &&
342 (distNonBend < fSegmentMaxDistNonBending[Station]) &&
343 (!last2st || (impactParam < maxImpactParam)) &&
344 (!last2st || (impactParam > minImpactParam))) {
345 // make new segment
346 segment = new ((*fSegmentsPtr[Station])[segmentIndex])
347 AliMUONSegment(hit1Ptr, hit2Ptr);
348 // update "link" to this segment from the hit in the first chamber
349 if (hit1Ptr->GetNSegments() == 0)
350 hit1Ptr->SetIndexOfFirstSegment(segmentIndex);
351 hit1Ptr->SetNSegments(hit1Ptr->GetNSegments() + 1);
352 if (AliLog::GetGlobalDebugLevel() > 1) {
353 cout << "segmentIndex(0...): " << segmentIndex
354 << " distBend: " << distBend
355 << " distNonBend: " << distNonBend
356 << endl;
357 segment->Dump();
358 cout << "HitForRec in first chamber" << endl;
359 hit1Ptr->Dump();
360 cout << "HitForRec in second chamber" << endl;
361 hit2Ptr->Dump();
362 };
363 // increment index for current segment
364 segmentIndex++;
365 }
366 } //for (Int_t hit2
367 } // for (Int_t hit1...
368 fNSegments[Station] = segmentIndex;
369 // Sorting according to "impact parameter" if station(1..5) 4 or 5,
370 // i.e. Station(0..4) 3 or 4, using the function "Compare".
371 // After this sorting, it is impossible to use
372 // the "fNSegments" and "fIndexOfFirstSegment"
373 // of the HitForRec in the first chamber to explore all segments formed with it.
374 // Is this sorting really needed ????
375 if ((Station == 3) || (Station == 4)) (fSegmentsPtr[Station])->Sort();
376 AliDebug(1,Form("Station: %d NSegments: %d ", Station, fNSegments[Station]));
377 return;
378}
379
380 //__________________________________________________________________________
381Double_t AliMUONVTrackReconstructor::GetImpactParamFromBendingMomentum(Double_t BendingMomentum) const
382{
383 /// Returns impact parameter at vertex in bending plane (cm),
384 /// from the signed bending momentum "BendingMomentum" in bending plane (GeV/c),
385 /// using simple values for dipole magnetic field.
386 /// The sign of "BendingMomentum" is the sign of the charge.
387 return (-0.0003 * fSimpleBValue * fSimpleBLength * fSimpleBPosition /
388 BendingMomentum);
389}
390
391 //__________________________________________________________________________
392Double_t AliMUONVTrackReconstructor::GetBendingMomentumFromImpactParam(Double_t ImpactParam) const
393{
394 /// Returns signed bending momentum in bending plane (GeV/c),
395 /// the sign being the sign of the charge for particles moving forward in Z,
396 /// from the impact parameter "ImpactParam" at vertex in bending plane (cm),
397 /// using simple values for dipole magnetic field.
398 return (-0.0003 * fSimpleBValue * fSimpleBLength * fSimpleBPosition /
399 ImpactParam);
400}
401
402 //__________________________________________________________________________
403void AliMUONVTrackReconstructor::ValidateTracksWithTrigger(void)
404{
405 /// Try to match track from tracking system with trigger track
406 AliMUONTrack *track;
407 AliMUONTrackParam trackParam;
408 AliMUONTriggerTrack *triggerTrack;
409
410 fMUONData->SetTreeAddress("RL");
411 fMUONData->GetRecTriggerTracks();
412 TClonesArray *recTriggerTracks = fMUONData->RecTriggerTracks();
413
414 Bool_t matchTrigger;
415 Double_t distSigma[3]={1,1,0.02}; // sigma of distributions (trigger-track) X,Y,slopeY
416 Double_t distTriggerTrack[3];
417 Double_t chi2MatchTrigger, xTrack, yTrack, ySlopeTrack, dTrigTrackMin2, dTrigTrack2 = 0.;
418
419 track = (AliMUONTrack*) fRecTracksPtr->First();
420 while (track) {
421 matchTrigger = kFALSE;
422 chi2MatchTrigger = 0.;
423
424 trackParam = *((AliMUONTrackParam*) (track->GetTrackParamAtHit()->Last()));
37827b29 425 AliMUONTrackExtrap::ExtrapToZ(&trackParam, AliMUONConstants::DefaultChamberZ(10)); // extrap to 1st trigger chamber
8d0843c6 426
427 xTrack = trackParam.GetNonBendingCoor();
428 yTrack = trackParam.GetBendingCoor();
429 ySlopeTrack = trackParam.GetBendingSlope();
430 dTrigTrackMin2 = 999.;
431
432 triggerTrack = (AliMUONTriggerTrack*) recTriggerTracks->First();
433 while(triggerTrack){
434 distTriggerTrack[0] = (triggerTrack->GetX11()-xTrack)/distSigma[0];
435 distTriggerTrack[1] = (triggerTrack->GetY11()-yTrack)/distSigma[1];
436 distTriggerTrack[2] = (TMath::Tan(triggerTrack->GetThetay())-ySlopeTrack)/distSigma[2];
437 dTrigTrack2 = 0.;
438 for (Int_t iVar = 0; iVar < 3; iVar++) dTrigTrack2 += distTriggerTrack[iVar]*distTriggerTrack[iVar];
439 if (dTrigTrack2 < dTrigTrackMin2 && dTrigTrack2 < fMaxSigma2Distance) {
440 dTrigTrackMin2 = dTrigTrack2;
441 matchTrigger = kTRUE;
442 chi2MatchTrigger = dTrigTrack2/3.; // Normalized Chi2, 3 variables (X,Y,slopeY)
443 }
444 triggerTrack = (AliMUONTriggerTrack*) recTriggerTracks->After(triggerTrack);
445 }
446
447 track->SetMatchTrigger(matchTrigger);
448 track->SetChi2MatchTrigger(chi2MatchTrigger);
449
450 track = (AliMUONTrack*) fRecTracksPtr->After(track);
451 }
452
453 return;
454}
455
456//__________________________________________________________________________
457void AliMUONVTrackReconstructor::EventReconstructTrigger(void)
458{
459 /// To reconstruct trigger for one event
460 AliDebug(1,"Enter EventReconstructTrigger");
461 MakeTriggerTracks();
462 return;
463}
464
465 //__________________________________________________________________________
466Bool_t AliMUONVTrackReconstructor::MakeTriggerTracks(void)
467{
468 // To make the trigger tracks from Local Trigger
469 AliDebug(1, "Enter MakeTriggerTracks");
e6b25a6e 470
471 TTree* treeR;
472 Int_t nTRentries;
473 UChar_t gloTrigPat;
474 TClonesArray *localTrigger;
475 TClonesArray *globalTrigger;
476 AliMUONLocalTrigger *locTrg;
477 AliMUONGlobalTrigger *gloTrg;
478
479 treeR = fMUONData->TreeR();
480 if (!treeR) {
481 AliWarning("TreeR is not loaded");
482 return kFALSE;
483 }
484
485 nTRentries = Int_t(treeR->GetEntries());
8d0843c6 486
e6b25a6e 487 treeR->GetEvent(0); // only one entry
8d0843c6 488
e6b25a6e 489 if (!(fMUONData->IsTriggerBranchesInTree())) {
490 AliWarning(Form("Trigger information is not avalaible, nTRentries = %d not equal to 1",nTRentries));
491 return kFALSE;
492 }
8d0843c6 493
e6b25a6e 494 fMUONData->SetTreeAddress("TC");
495 fMUONData->GetTrigger();
8d0843c6 496
e6b25a6e 497 // global trigger for trigger pattern
498 gloTrigPat = 0;
499 globalTrigger = fMUONData->GlobalTrigger();
500 gloTrg = (AliMUONGlobalTrigger*)globalTrigger->UncheckedAt(0);
8d0843c6 501
e6b25a6e 502 if (gloTrg)
503 gloTrigPat = gloTrg->GetGlobalResponse();
504
505
506 // local trigger for tracking
507 localTrigger = fMUONData->LocalTrigger();
508 Int_t nlocals = (Int_t) (localTrigger->GetEntries());
8d0843c6 509
e6b25a6e 510 Float_t z11 = AliMUONConstants::DefaultChamberZ(10);
511 Float_t z21 = AliMUONConstants::DefaultChamberZ(12);
512
513 Float_t y11 = 0.;
514 Int_t stripX21 = 0;
515 Float_t y21 = 0.;
516 Float_t x11 = 0.;
517
518 for (Int_t i=0; i<nlocals; i++) { // loop on Local Trigger
519 locTrg = (AliMUONLocalTrigger*)localTrigger->UncheckedAt(i);
520
521 AliDebug(1, "AliMUONTrackReconstructor::MakeTriggerTrack using NEW trigger \n");
522 AliMUONTriggerCircuit* circuit =
523 (AliMUONTriggerCircuit*)fTriggerCircuit->At(locTrg->LoCircuit()-1); // -1 !!!
524
525 y11 = circuit->GetY11Pos(locTrg->LoStripX());
526 stripX21 = locTrg->LoStripX()+locTrg->LoDev()+1;
527 y21 = circuit->GetY21Pos(stripX21);
528 x11 = circuit->GetX11Pos(locTrg->LoStripY());
529
530 AliDebug(1, Form(" MakeTriggerTrack %d %d %d %d %d %f %f %f \n",i,locTrg->LoCircuit(),
531 locTrg->LoStripX(),locTrg->LoStripX()+locTrg->LoDev()+1,locTrg->LoStripY(),y11, y21, x11));
532
533 Float_t thetax = TMath::ATan2( x11 , z11 );
534 Float_t thetay = TMath::ATan2( (y21-y11) , (z21-z11) );
535
536 fTriggerTrack->SetX11(x11);
537 fTriggerTrack->SetY11(y11);
538 fTriggerTrack->SetThetax(thetax);
539 fTriggerTrack->SetThetay(thetay);
540 fTriggerTrack->SetGTPattern(gloTrigPat);
541
542 fMUONData->AddRecTriggerTrack(*fTriggerTrack);
543 } // end of loop on Local Trigger
544
545 return kTRUE;
8d0843c6 546}
547
548//__________________________________________________________________________
549void AliMUONVTrackReconstructor::EventDumpTrigger(void)
550{
551 /// Dump reconstructed trigger event
552 /// and the particle parameters
553 AliMUONTriggerTrack *triggertrack ;
554 Int_t nTriggerTracks = fMUONData->RecTriggerTracks()->GetEntriesFast();
555
556 AliDebug(1, "****** enter EventDumpTrigger ******");
557 AliDebug(1, Form("Number of Reconstructed tracks : %d ", nTriggerTracks));
558
559 // Loop over reconstructed tracks
560 for (Int_t trackIndex = 0; trackIndex < nTriggerTracks; trackIndex++) {
561 triggertrack = (AliMUONTriggerTrack*)fMUONData->RecTriggerTracks()->At(trackIndex);
562 printf(" trigger track number %i x11=%f y11=%f thetax=%f thetay=%f \n",
563 trackIndex,
564 triggertrack->GetX11(),triggertrack->GetY11(),
565 triggertrack->GetThetax(),triggertrack->GetThetay());
566 }
567}
568