]> git.uio.no Git - u/mrichter/AliRoot.git/blame - MUON/AliMUONTrackHitPattern.cxx
git://git.uio.no / u / mrichter / AliRoot.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Removing compiler warnings from AliMUONGain, AliMUONPedestal.
[u/mrichter/AliRoot.git] / MUON / AliMUONTrackHitPattern.cxx
CommitLineData
7771752e 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
ea94c18b 16/* $Id$ */
17
18
3d1463c8 19//-----------------------------------------------------------------------------
7771752e 20/// \class AliMUONTrackHitPattern
21///
22/// This class propagates tracks to trigger chambers
683cb6c5 23/// searching for matching trigger tracks and fired strips.
7771752e 24///
25/// To each track, a hit pattern for trigger chambers is set.
67c201be 26///
7771752e 27/// The main method is:
683cb6c5 28/// * ExecuteValidation
7771752e 29///
30/// \author Diego Stocco
3d1463c8 31//-----------------------------------------------------------------------------
7771752e 32
33
34#include "AliMUONTrackHitPattern.h"
7ec3b9cf 35
7771752e 36#include "AliMUONConstants.h"
7ec3b9cf 37#include "AliMUONVDigit.h"
38#include "AliMUONDigitMaker.h"
39#include "AliMUONDigitStoreV1.h"
7771752e 40#include "AliMUONGeometryTransformer.h"
7771752e 41#include "AliMUONLocalTrigger.h"
7771752e 42#include "AliMUONLocalTriggerBoard.h"
a0dc65b4 43#include "AliMUONRecoParam.h"
7ec3b9cf 44#include "AliMUONTrack.h"
45#include "AliMUONTrackExtrap.h"
46#include "AliMUONTrackParam.h"
47#include "AliMUONVTrackStore.h"
48#include "AliMUONVTriggerStore.h"
7771752e 49#include "AliMpPad.h"
7771752e 50#include "AliMpSegmentation.h"
7ec3b9cf 51#include "AliMpVSegmentation.h"
fda59e58 52#include "AliMpDEManager.h"
53#include "AliMUONReconstructor.h"
683cb6c5 54#include "AliMUONTriggerTrack.h"
55#include "AliMUONVTriggerTrackStore.h"
56
57#include "AliMpConstants.h"
ea94c18b 58
ea94c18b 59#include "AliLog.h"
7771752e 60#include "AliTracker.h"
67c201be 61#include "AliESDMuonTrack.h"
ea94c18b 62
7771752e 63#include <Riostream.h>
7ec3b9cf 64#include <TArrayS.h>
7771752e 65#include <TClonesArray.h>
66#include <TMath.h>
67#include <TMatrixD.h>
683cb6c5 68#include <TROOT.h>
69#include <TDirectory.h>
70#include <TFile.h>
71#include <TSystem.h>
6e97fbb8 72#include <TVector2.h>
683cb6c5 73
74#include <cassert>
7771752e 75
76/// \cond CLASSIMP
77ClassImp(AliMUONTrackHitPattern) // Class implementation in ROOT context
78/// \endcond
79
80
81//______________________________________________________________________________
a0dc65b4 82AliMUONTrackHitPattern::AliMUONTrackHitPattern(const AliMUONRecoParam* recoParam,
83 const AliMUONGeometryTransformer& transformer,
7ec3b9cf 84 const AliMUONDigitMaker& digitMaker)
a0dc65b4 85: TObject(),
9b1e069f 86fkRecoParam(recoParam),
87fkTransformer(transformer),
88fkDigitMaker(digitMaker),
a0dc65b4 89fDeltaZ(0.0),
90fTrigCovariance(0x0),
91fkMaxDistance(99999.)
7771752e 92{
93 /// Default constructor
683cb6c5 94 InitMembers();
f7a1cc68 95 AliMUONTrackExtrap::SetField();
7771752e 96}
97
98
99//______________________________________________________________________________
100AliMUONTrackHitPattern::~AliMUONTrackHitPattern(void)
101{
7ec3b9cf 102 /// Destructor
683cb6c5 103 delete fTrigCovariance;
7771752e 104}
105
106
107//______________________________________________________________________________
683cb6c5 108void AliMUONTrackHitPattern::InitMembers()
7771752e 109{
683cb6c5 110 //
111 /// Initialize data members
112 //
113 fDeltaZ = TMath::Abs(AliMUONConstants::DefaultChamberZ(12) - AliMUONConstants::DefaultChamberZ(10));
114
115 const Double_t kTrigNonBendReso = AliMUONConstants::TriggerNonBendingReso();
116 const Double_t kTrigBendReso = AliMUONConstants::TriggerBendingReso();
117 const Double_t kTrigSlopeBendReso = 1.414 * AliMUONConstants::TriggerBendingReso()/fDeltaZ;
118 const Double_t kTrigCovSlopeBend = - kTrigBendReso * kTrigBendReso / fDeltaZ;
119
120 // Covariance matrix 3x3 (X,Y,slopeY) for trigger tracks
121 fTrigCovariance = new TMatrixD(3,3);
122 fTrigCovariance->Zero();
123 (*fTrigCovariance)(0,0) = kTrigNonBendReso * kTrigNonBendReso;
124 (*fTrigCovariance)(1,1) = kTrigBendReso * kTrigBendReso;
125 (*fTrigCovariance)(2,2) = kTrigSlopeBendReso * kTrigSlopeBendReso;
126 (*fTrigCovariance)(1,2) = (*fTrigCovariance)(2,1) = kTrigCovSlopeBend;
683cb6c5 127}
fda59e58 128
7ec3b9cf 129
683cb6c5 130//_____________________________________________________________________________
131void AliMUONTrackHitPattern::CheckConstants() const
132{
133/// Check consistence of redefined constants
134
135 assert(fgkNcathodes == AliMpConstants::NofCathodes());
136 assert(fgkNchambers == AliMpConstants::NofTriggerChambers());
137 assert(fgkNplanes == AliMpConstants::NofTriggerChambers() * fgkNcathodes);
138}
139
140
141//______________________________________________________________________________
9b1e069f 142void AliMUONTrackHitPattern::ExecuteValidation(const AliMUONVTrackStore& trackStore,
683cb6c5 143 const AliMUONVTriggerTrackStore& triggerTrackStore,
144 const AliMUONVTriggerStore& triggerStore) const
145{
146 //
147 /// Main method:
148 /// Loops on reco tracks, extrapolates them to trigger chambers
149 /// and searches for matching trigger tracks and digits
150 //
151
152 AliMUONDigitStoreV1 digitStore;
54355f2c 153 fkDigitMaker.TriggerToDigitsStore(triggerStore,digitStore);
683cb6c5 154
67c201be 155 // Get the hit pattern for all trigger tracks
156 AliMUONTriggerTrack* triggerTrack;
157 TIter itTriggerTrack(triggerTrackStore.CreateIterator());
158 while ( ( triggerTrack = static_cast<AliMUONTriggerTrack*>(itTriggerTrack() ) ) ){
159 UShort_t pattern = GetHitPattern(triggerTrack, digitStore);
160 triggerTrack->SetHitsPatternInTrigCh(pattern);
161 AliDebug(1, Form("Hit pattern: hits 0x%x slat %2i board %3i effFlag %i",
162 pattern & 0xFF, AliESDMuonTrack::GetSlatOrInfo(pattern),
163 triggerTrack->GetLoTrgNum(), AliESDMuonTrack::GetEffFlag(pattern)));
164 }
683cb6c5 165
67c201be 166 // Match tracker tracks with trigger tracks.
683cb6c5 167 TIter itTrack(trackStore.CreateIterator());
168 AliMUONTrack* track;
169
170 const Int_t kFirstTrigCh = AliMUONConstants::NTrackingCh();
171
172 while ( ( track = static_cast<AliMUONTrack*>(itTrack()) ) )
173 {
174 AliMUONTrackParam trackParam(*((AliMUONTrackParam*) (track->GetTrackParamAtCluster()->Last())));
175
176 ApplyMCSCorrections(trackParam);
177 AliMUONTrackExtrap::ExtrapToZCov(&trackParam, AliMUONConstants::DefaultChamberZ(kFirstTrigCh)); // extrap to 1st trigger chamber
178
179 AliMUONTriggerTrack *matchedTriggerTrack = MatchTriggerTrack(track, trackParam, triggerTrackStore, triggerStore);
180
67c201be 181 // Copy trigger tracks hit pattern if there is matching,
182 // otherwise calculate the hit pattern directly from tracker track:
183 // the obtained pattern is good for check, but not good for efficiency determination.
184 UShort_t pattern = matchedTriggerTrack ?
185 matchedTriggerTrack->GetHitsPatternInTrigCh() :
186 GetHitPattern(&trackParam, digitStore);
187
683cb6c5 188 track->SetHitsPatternInTrigCh(pattern);
189 }
190}
191
192
193//______________________________________________________________________________
194AliMUONTriggerTrack *
195AliMUONTrackHitPattern::MatchTriggerTrack(AliMUONTrack* track,
196 AliMUONTrackParam& trackParam,
197 const AliMUONVTriggerTrackStore& triggerTrackStore,
198 const AliMUONVTriggerStore& triggerStore) const
199{
200 //
201 /// Match track with trigger track
202 //
203
204 Int_t matchTrigger = 0;
205 Int_t loTrgNum(-1);
206 Double_t distTriggerTrack[3], sigma2[3];
207 Double_t chi2;
208 Double_t chi2MatchTrigger = 0., minChi2MatchTrigger = 999.;
209 Int_t doubleMatch = -1; // Check if track matches 2 trigger tracks
210 Double_t doubleChi2 = -1.;
211 AliMUONTriggerTrack* doubleTriggerTrack = 0x0;
212 AliMUONTriggerTrack* matchedTriggerTrack = 0x0;
7ec3b9cf 213
683cb6c5 214 const TMatrixD& kParamCov = trackParam.GetCovariances();
7ec3b9cf 215
683cb6c5 216 Double_t xTrack = trackParam.GetNonBendingCoor();
217 Double_t yTrack = trackParam.GetBendingCoor();
218 Double_t ySlopeTrack = trackParam.GetBendingSlope();
219
220 // Covariance matrix 3x3 (X,Y,slopeY) for tracker tracks
221 TMatrixD trackCov(3,3);
222 trackCov.Zero();
223 trackCov(0,0) = kParamCov(0,0);
224 trackCov(1,1) = kParamCov(2,2);
225 trackCov(2,2) = kParamCov(3,3);
226 trackCov(1,2) = kParamCov(2,3);
227 trackCov(2,1) = kParamCov(3,2);
228
229 TMatrixD sumCov(trackCov,TMatrixD::kPlus,*fTrigCovariance);
230
231 Bool_t isCovOK = kTRUE;
232
233 if (sumCov.Determinant() != 0) {
234 sumCov.Invert();
235 } else {
236 AliWarning(" Determinant = 0");
237 isCovOK = kFALSE;
238 sigma2[0] = kParamCov(0,0);
239 sigma2[1] = kParamCov(2,2);
240 sigma2[2] = kParamCov(3,3);
241 // sigma of distributions (trigger-track) X,Y,slopeY
242 const Double_t kDistSigma[3]={AliMUONConstants::TriggerNonBendingReso(),
243 AliMUONConstants::TriggerBendingReso(),
244 1.414 * AliMUONConstants::TriggerBendingReso()/fDeltaZ};
245 for (Int_t iVar = 0; iVar < 3; iVar++) sigma2[iVar] += kDistSigma[iVar] * kDistSigma[iVar];
246 }
fda59e58 247
683cb6c5 248 AliMUONTriggerTrack *triggerTrack;
249 TIter itTriggerTrack(triggerTrackStore.CreateIterator());
250 while ( ( triggerTrack = static_cast<AliMUONTriggerTrack*>(itTriggerTrack() ) ) )
251 {
252 distTriggerTrack[0] = triggerTrack->GetX11() - xTrack;
253 distTriggerTrack[1] = triggerTrack->GetY11() - yTrack;
254 distTriggerTrack[2] = TMath::Tan(triggerTrack->GetThetay()) - ySlopeTrack;
255
256 if(isCovOK){
257 TMatrixD paramDiff(3,1);
258 for(Int_t iVar = 0; iVar < 3; iVar++)
259 paramDiff(iVar,0) = distTriggerTrack[iVar];
260
261 TMatrixD tmp(sumCov,TMatrixD::kMult,paramDiff);
262 TMatrixD chi2M(paramDiff,TMatrixD::kTransposeMult,tmp);
263 chi2 = chi2M(0,0);
264 }
265 else {
266 chi2 = 0.;
267 for (Int_t iVar = 0; iVar < 3; iVar++) chi2 += distTriggerTrack[iVar]*distTriggerTrack[iVar]/sigma2[iVar];
268 }
fda59e58 269
683cb6c5 270 chi2 /= 3.; // Normalized Chi2: 3 degrees of freedom (X,Y,slopeY)
a0dc65b4 271 if (chi2 < GetRecoParam()->GetMaxNormChi2MatchTrigger())
7ec3b9cf 272 {
683cb6c5 273 Bool_t isDoubleTrack = (TMath::Abs(chi2 - minChi2MatchTrigger)<1.);
a0dc65b4 274 if (chi2 < minChi2MatchTrigger && chi2 < GetRecoParam()->GetMaxNormChi2MatchTrigger())
7ec3b9cf 275 {
683cb6c5 276 if(isDoubleTrack)
277 {
278 doubleMatch = loTrgNum;
279 doubleChi2 = chi2MatchTrigger;
280 doubleTriggerTrack = matchedTriggerTrack;
fda59e58 281 }
683cb6c5 282 minChi2MatchTrigger = chi2;
283 chi2MatchTrigger = chi2;
284 loTrgNum = triggerTrack->GetLoTrgNum();
285 matchedTriggerTrack = triggerTrack;
286 AliMUONLocalTrigger* locTrg = triggerStore.FindLocal(loTrgNum);
287 matchTrigger = 1;
288 if(locTrg->LoLpt()>0) matchTrigger = 2;
289 if(locTrg->LoHpt()>0) matchTrigger = 3;
290 }
291 else if(isDoubleTrack)
292 {
293 doubleMatch = triggerTrack->GetLoTrgNum();
294 doubleChi2 = chi2;
7ec3b9cf 295 }
7771752e 296 }
683cb6c5 297 }
298 if(doubleMatch>=0)
299 { // If two trigger tracks match, select the one passing more trigger cuts
300 AliDebug(1, Form("Two candidates found: %i and %i",loTrgNum,doubleMatch));
301 AliMUONLocalTrigger* locTrg1 = triggerStore.FindLocal(doubleMatch);
302 if((locTrg1->LoLpt()>0 && matchTrigger<2) || (locTrg1->LoHpt() && matchTrigger<3))
303 {
304 if(locTrg1->LoHpt()>0) matchTrigger=3;
305 else matchTrigger = 2;
306 loTrgNum = doubleMatch;
307 chi2MatchTrigger = doubleChi2;
308 matchedTriggerTrack = doubleTriggerTrack;
309 }
310 }
311
312 track->SetMatchTrigger(matchTrigger);
313 track->SetLoTrgNum(loTrgNum);
314 track->SetChi2MatchTrigger(chi2MatchTrigger);
315
316 AliMUONLocalTrigger* locTrg = static_cast<AliMUONLocalTrigger*>(triggerStore.FindLocal(loTrgNum));
317
318 if (locTrg)
319 {
d72d7b9e 320 Int_t deviation = locTrg->GetDeviation();
683cb6c5 321 track->SetLocalTrigger(locTrg->LoCircuit(),
322 locTrg->LoStripX(),
323 locTrg->LoStripY(),
c79ae710 324 deviation,
683cb6c5 325 locTrg->LoLpt(),
326 locTrg->LoHpt());
327 }
328
329 return matchedTriggerTrack;
330}
331
332
333//______________________________________________________________________________
54355f2c 334UShort_t AliMUONTrackHitPattern::GetHitPattern(AliMUONTriggerTrack* matchedTriggerTrack,
67c201be 335 AliMUONVDigitStore& digitStore) const
683cb6c5 336{
337 //
67c201be 338 /// Get hit pattern on trigger chambers for the current trigger track
683cb6c5 339 //
340 UShort_t pattern = 0;
67c201be 341 PerformTrigTrackMatch(pattern, matchedTriggerTrack, digitStore);
342 return pattern;
343}
683cb6c5 344
54355f2c 345
67c201be 346//______________________________________________________________________________
347UShort_t AliMUONTrackHitPattern::GetHitPattern(AliMUONTrackParam* trackParam,
348 AliMUONVDigitStore& digitStore) const
349{
350 //
351 /// Get hit pattern on trigger chambers for the current tracker track
352 //
353 UShort_t pattern = 0;
354 Bool_t isMatch[2];
355 const Int_t kNTrackingCh = AliMUONConstants::NTrackingCh();
683cb6c5 356
357 for(Int_t ch=0; ch<4; ++ch)
358 {
359 Int_t iChamber = kNTrackingCh+ch;
54355f2c 360 AliMUONTrackExtrap::ExtrapToZCov(trackParam, AliMUONConstants::DefaultChamberZ(iChamber));
361 FindPadMatchingTrack(digitStore, *trackParam, isMatch, iChamber);
683cb6c5 362 for(Int_t cath=0; cath<2; ++cath)
363 {
67c201be 364 if(isMatch[cath]) AliESDMuonTrack::SetFiredChamber(pattern, cath, ch);
683cb6c5 365 }
366 }
683cb6c5 367
67c201be 368 // pattern obtained by propagation of tracker track
369 // when it does not match the trigger.
370 AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackerTrackPattern);
683cb6c5 371
67c201be 372 return pattern;
683cb6c5 373}
374
683cb6c5 375//______________________________________________________________________________
376void
377AliMUONTrackHitPattern::ApplyMCSCorrections(AliMUONTrackParam& trackParam) const
378{
379 //
380 /// Returns uncertainties on extrapolated position.
381 /// Takes into account Branson plane corrections in the iron wall.
382 //
383
384 const Float_t kZFilterOut = AliMUONConstants::MuonFilterZEnd();
385 const Float_t kFilterThickness = TMath::Abs(kZFilterOut-AliMUONConstants::MuonFilterZBeg()); // cm
386
387 AliMUONTrackExtrap::ExtrapToZCov(&trackParam, kZFilterOut); // Extrap to muon filter end
388 AliMUONTrackExtrap::AddMCSEffect(&trackParam, kFilterThickness, AliMUONConstants::MuonFilterX0()); // Add MCS effects
389 return;
390}
391
392
7771752e 393//______________________________________________________________________________
7ec3b9cf 394void
9b1e069f 395AliMUONTrackHitPattern::FindPadMatchingTrack(const AliMUONVDigitStore& digitStore,
7ec3b9cf 396 const AliMUONTrackParam& trackParam,
fda59e58 397 Bool_t isMatch[2], Int_t iChamber) const
7771752e 398{
399 //
683cb6c5 400 /// Given the tracker track position, searches for matching digits.
7771752e 401 //
402
403 Float_t minMatchDist[2];
404
7ec3b9cf 405 for(Int_t cath=0; cath<2; ++cath)
406 {
407 isMatch[cath]=kFALSE;
683cb6c5 408 minMatchDist[cath]=fkMaxDistance/10.;
7771752e 409 }
410
7ec3b9cf 411 TIter next(digitStore.CreateIterator());
412 AliMUONVDigit* mDigit;
fda59e58 413
7ec3b9cf 414 while ( ( mDigit = static_cast<AliMUONVDigit*>(next()) ) )
415 {
416 Int_t currDetElemId = mDigit->DetElemId();
fda59e58 417 Int_t currCh = AliMpDEManager::GetChamberId(currDetElemId);
418 if(currCh!=iChamber) continue;
7ec3b9cf 419 Int_t cathode = mDigit->Cathode();
420 Int_t ix = mDigit->PadX();
421 Int_t iy = mDigit->PadY();
422 Float_t xpad, ypad, zpad;
423 const AliMpVSegmentation* seg = AliMpSegmentation::Instance()
424 ->GetMpSegmentation(currDetElemId,AliMp::GetCathodType(cathode));
425
168e9c4d 426 AliMpPad pad = seg->PadByIndices(ix,iy,kTRUE);
6e97fbb8 427 Float_t xlocal1 = pad.GetPositionX();
428 Float_t ylocal1 = pad.GetPositionY();
429 Float_t dpx = pad.GetDimensionX();
430 Float_t dpy = pad.GetDimensionY();
431
9b1e069f 432 fkTransformer.Local2Global(currDetElemId, xlocal1, ylocal1, 0, xpad, ypad, zpad);
7ec3b9cf 433 Float_t matchDist = MinDistanceFromPad(xpad, ypad, zpad, dpx, dpy, trackParam);
434 if(matchDist>minMatchDist[cathode])continue;
435 isMatch[cathode] = kTRUE;
fda59e58 436 if(isMatch[0] && isMatch[1]) break;
7ec3b9cf 437 minMatchDist[cathode] = matchDist;
7771752e 438 }
7771752e 439}
440
441
442//______________________________________________________________________________
7ec3b9cf 443Float_t
444AliMUONTrackHitPattern::MinDistanceFromPad(Float_t xPad, Float_t yPad, Float_t zPad,
445 Float_t dpx, Float_t dpy,
446 const AliMUONTrackParam& trackParam) const
7771752e 447{
448 //
683cb6c5 449 /// Decides if the digit belongs to the tracker track.
7771752e 450 //
7771752e 451
fda59e58 452 AliMUONTrackParam trackParamAtPadZ(trackParam);
453 AliMUONTrackExtrap::ExtrapToZCov(&trackParamAtPadZ, zPad);
454
455 Float_t xTrackAtPad = trackParamAtPadZ.GetNonBendingCoor();
456 Float_t yTrackAtPad = trackParamAtPadZ.GetBendingCoor();
7771752e 457
a0dc65b4 458 const Float_t kNSigma = GetRecoParam()->GetSigmaCutForTrigger();
fda59e58 459
460 const TMatrixD& kCovParam = trackParamAtPadZ.GetCovariances();
461
462 Float_t sigmaX = TMath::Sqrt(kCovParam(0,0));
463 Float_t sigmaY = TMath::Sqrt(kCovParam(2,2));
464
465 Float_t maxDistX = kNSigma * sigmaX; // in cm
466 Float_t maxDistY = kNSigma * sigmaY; // in cm
7771752e 467
468 Float_t deltaX = TMath::Abs(xPad-xTrackAtPad)-dpx;
469 Float_t deltaY = TMath::Abs(yPad-yTrackAtPad)-dpy;
470
683cb6c5 471 Float_t matchDist = fkMaxDistance;
7771752e 472 if(deltaX<=maxDistX && deltaY<=maxDistY) matchDist = TMath::Max(deltaX, deltaY);
fda59e58 473
7771752e 474 return matchDist;
475}
476
477
683cb6c5 478//_____________________________________________________________________________
9b1e069f 479Int_t AliMUONTrackHitPattern::FindPadMatchingTrig(const AliMUONVDigitStore& digitStore, Int_t &detElemId,
683cb6c5 480 Float_t coor[2], Bool_t isMatch[2],
481 TArrayI nboard[2], TArrayF &zRealMatch, Float_t y11) const
482{
483 //
484 /// Check slat and board number of digit matching trigger track
485 //
486
487 enum {kBending, kNonBending};
488
489 Float_t minMatchDist[fgkNcathodes];
490 Int_t padsInCheckArea[fgkNcathodes];
491
492 for(Int_t cath=0; cath<fgkNcathodes; cath++){
493 isMatch[cath] = kFALSE;
494 minMatchDist[cath] = fkMaxDistance/10.;
495 padsInCheckArea[cath] = 0;
496 }
497 Int_t iChamber = AliMpDEManager::GetChamberId(detElemId);
498 Int_t ch = iChamber-10;
499 Float_t oldDeltaZ = AliMUONConstants::DefaultChamberZ(iChamber) - AliMUONConstants::DefaultChamberZ(10);
500 Float_t y = coor[1];
501 Int_t iSlat = detElemId%100;
502 Int_t trigDigitBendPlane = -1;
503 Int_t foundDetElemId = detElemId;
504 Float_t foundZmatch=999.;
505 Float_t yCoorAtPadZ=999.;
506
507 TIter next(digitStore.CreateIterator());
508 AliMUONVDigit* mDigit;
509 Int_t idigit=0;
510
511 while ( ( mDigit = static_cast<AliMUONVDigit*>(next()) ) )
512 {
513 idigit++;
514 Int_t currDetElemId = mDigit->DetElemId();
515 Int_t currCh = AliMpDEManager::GetChamberId(currDetElemId);
516 if(currCh!=iChamber) continue;
517 Int_t currSlat = currDetElemId%100;
518 Int_t slatDiff = TMath::Abs(currSlat-iSlat);
519 if(slatDiff>1 && slatDiff<17) continue; // Check neighbour slats
520 Int_t cathode = mDigit->Cathode();
521 Int_t ix = mDigit->PadX();
522 Int_t iy = mDigit->PadY();
523 Float_t xpad, ypad, zpad;
524 const AliMpVSegmentation* seg = AliMpSegmentation::Instance()
525 ->GetMpSegmentation(currDetElemId,AliMp::GetCathodType(cathode));
526
168e9c4d 527 AliMpPad pad = seg->PadByIndices(ix,iy,kTRUE);
6e97fbb8 528 Float_t xlocal1 = pad.GetPositionX();
529 Float_t ylocal1 = pad.GetPositionY();
530 Float_t dpx = pad.GetDimensionX();
531 Float_t dpy = pad.GetDimensionY();
532
9b1e069f 533 fkTransformer.Local2Global(currDetElemId, xlocal1, ylocal1, 0, xpad, ypad, zpad);
b5270f21 534 AliDebug(2, Form("\nDetElemId = %i Cathode = %i Pad = (%i,%i) = (%.2f,%.2f) Dim = (%.2f,%.2f) Track = (%.2f,%.2f)\n",currDetElemId,cathode,ix,iy,xpad,ypad,dpx,dpy,coor[0],coor[1]));
683cb6c5 535 // searching track intersection with chambers (second approximation)
536 if(ch%2==1){
537 //if(iChamber%2==1){
538 Float_t deltaZ = zpad - zRealMatch[0];
539 y = (coor[1]-y11)*deltaZ/oldDeltaZ + y11;
540 if(TMath::Abs(y-coor[1])>0.1) AliDebug(3, Form("oldDeltaZ = %7.2f newDeltaZ = %7.2f\toldY = %7.2f new y = %7.2f\n",oldDeltaZ,deltaZ,coor[1],y));
541 }
542 Float_t matchDist = PadMatchTrack(xpad, ypad, dpx, dpy, coor[0], y);
543 if(matchDist<fkMaxDistance/2.) padsInCheckArea[cathode]++;
544 if(matchDist>minMatchDist[cathode])continue;
545 isMatch[cathode] = kTRUE;
546 minMatchDist[cathode] = matchDist;
547 foundDetElemId = currDetElemId;
548 foundZmatch=zpad;
549 yCoorAtPadZ=y;
550 if(cathode==kBending) trigDigitBendPlane = idigit;
551 for (Int_t loc=0; loc<pad.GetNofLocations(); loc++){
168e9c4d 552 nboard[cathode][loc] = pad.GetLocalBoardId(loc);
683cb6c5 553 }
554 for(Int_t loc=pad.GetNofLocations(); loc<fgkNlocations; loc++){
555 nboard[cathode][loc]=-1;
556 }
683cb6c5 557 }
558
683cb6c5 559 if(isMatch[kBending] || isMatch[kNonBending]){
560 detElemId = foundDetElemId;
561 zRealMatch[ch] = foundZmatch;
562 coor[1] = yCoorAtPadZ;
563 }
67c201be 564
565 // If track matches many pads, it is not good for effciency determination.
566 // However we still want to calculate the hit pattern.
567 for(Int_t cath=0; cath<fgkNcathodes; cath++){
568 if(padsInCheckArea[cath]>2) {
569 AliDebug(1, Form("padsInCheckArea[%i] = %i\n",cath,padsInCheckArea[cath]));
570 return -500;
571 }
572 }
573
683cb6c5 574 return trigDigitBendPlane;
575}
576
577//_____________________________________________________________________________
578Float_t AliMUONTrackHitPattern::PadMatchTrack(Float_t xPad, Float_t yPad,
579 Float_t dpx, Float_t dpy,
580 Float_t xTrackAtPad, Float_t yTrackAtPad) const
581{
582 //
583 /// Decides if the digit belongs to the trigger track.
584 //
585
a0dc65b4 586 Float_t maxDist = GetRecoParam()->GetStripCutForTrigger() * 2. * TMath::Min(dpx,dpy); // cm
b5270f21 587 if(maxDist<2.) maxDist = 2.;
a0dc65b4 588 Float_t maxDistCheckArea = GetRecoParam()->GetMaxStripAreaForTrigger() * 2. * TMath::Min(dpx,dpy); // cm
683cb6c5 589
590 Float_t matchDist = fkMaxDistance;
591
592 Float_t deltaX = TMath::Abs(xPad-xTrackAtPad)-dpx;
593 Float_t deltaY = TMath::Abs(yPad-yTrackAtPad)-dpy;
594 Float_t maxDistX = maxDist;
595 Float_t maxDistY = maxDist;
596
597 if(deltaX<=maxDistX && deltaY<=maxDistY) matchDist = TMath::Max(deltaX, deltaY);
598 else if(deltaX<=maxDistCheckArea && deltaY<=maxDistCheckArea) matchDist = fkMaxDistance/5.;
599 return matchDist;
600}
601
602
603//_____________________________________________________________________________
604Int_t AliMUONTrackHitPattern::DetElemIdFromPos(Float_t x, Float_t y,
605 Int_t chamber, Int_t cathode) const
606{
607 //
608 /// Given the (x,y) position in the chamber,
609 /// it returns the corresponding slat
610 //
611
612 Int_t resultingDetElemId = -1;
613 AliMpDEIterator it;
614 Float_t minDist = 999.;
615 for ( it.First(chamber-1); ! it.IsDone(); it.Next() ){
616 Int_t detElemId = it.CurrentDEId();
617 Int_t ich = detElemId/100-10;
618 Float_t tolerance=0.2*((Float_t)ich);
619 Float_t currDist=9999.;
620
621 const AliMpVSegmentation* seg =
622 AliMpSegmentation::Instance()
623 ->GetMpSegmentation(detElemId,AliMp::GetCathodType(cathode));
624 if (!seg) continue;
625
6e97fbb8 626 Float_t deltax = seg->GetDimensionX();
627 Float_t deltay = seg->GetDimensionY();
683cb6c5 628 Float_t xlocal1 = -deltax;
629 Float_t ylocal1 = -deltay;
630 Float_t xlocal2 = +deltax;
631 Float_t ylocal2 = +deltay;
632 Float_t xg01, yg01, zg1, xg02, yg02, zg2;
9b1e069f 633 fkTransformer.Local2Global(detElemId, xlocal1, ylocal1, 0, xg01, yg01, zg1);
634 fkTransformer.Local2Global(detElemId, xlocal2, ylocal2, 0, xg02, yg02, zg2);
683cb6c5 635
636 Float_t xg1 = xg01, xg2 = xg02, yg1 = yg01, yg2 = yg02;
637
638 if(xg01>xg02){
639 xg1 = xg02;
640 xg2 = xg01;
641 }
642 if(yg01>yg02){
643 yg1 = yg02;
644 yg2 = yg01;
645 }
646
647 if(x>=xg1-tolerance && x<=xg2+tolerance && y>=yg1-tolerance && y<=yg2+tolerance){ // takes into account errors in extrapolation
648 if(y<yg1) currDist = yg1-y;
649 else if(y>yg2) currDist = y-yg2;
650 if(currDist<minDist) {
651 resultingDetElemId = detElemId;
652 minDist=currDist;
653 continue;
654 }
655 resultingDetElemId = detElemId;
656 break;
657 }
658 } // loop on detElemId
659 return resultingDetElemId;
660}
661
662
663//_____________________________________________________________________________
664void AliMUONTrackHitPattern::LocalBoardFromPos(Float_t x, Float_t y,
665 Int_t detElemId, Int_t cathode,
666 Int_t localBoard[4]) const
667{
668 //
669 /// Given the (x,y) position in the chamber,
670 /// it returns the corresponding local board
671 //
672
673 for(Int_t loc=0; loc<fgkNlocations; loc++){
674 localBoard[loc]=-1;
675 }
676 Float_t xl, yl, zl;
9b1e069f 677 fkTransformer.Global2Local(detElemId, x, y, 0, xl, yl, zl);
683cb6c5 678 TVector2 pos(xl,yl);
679 const AliMpVSegmentation* seg =
680 AliMpSegmentation::Instance()
681 ->GetMpSegmentation(detElemId,AliMp::GetCathodType(cathode));
682 if (seg){
6e97fbb8 683 AliMpPad pad = seg->PadByPosition(pos.X(),pos.Y(),kFALSE);
683cb6c5 684 for (Int_t loc=0; loc<pad.GetNofLocations(); loc++){
168e9c4d 685 localBoard[loc] = pad.GetLocalBoardId(loc);
683cb6c5 686 }
687 }
688}
689
690
691//_____________________________________________________________________________
692Bool_t AliMUONTrackHitPattern::PerformTrigTrackMatch(UShort_t &pattern,
9b1e069f 693 const AliMUONTriggerTrack* matchedTrigTrack,
683cb6c5 694 AliMUONVDigitStore& digitStore) const
7771752e 695{
fda59e58 696 //
683cb6c5 697 /// It searches for matching digits around the trigger track.
fda59e58 698 //
7771752e 699
683cb6c5 700 enum {kBending, kNonBending};
7771752e 701
683cb6c5 702 Int_t chOrder[fgkNchambers] = {0,2,1,3};
703
704 TArrayF zRealMatch(fgkNchambers);
705 TArrayF correctFactor(fgkNcathodes);
706
707 Bool_t isMatch[fgkNcathodes];
708 for(Int_t cath=0; cath<fgkNcathodes; cath++){
709 isMatch[cath] = kFALSE;
710 }
711
712 TArrayF zMeanChamber(fgkNchambers);
713 for(Int_t ch=0; ch<fgkNchambers; ch++){
714 zMeanChamber[ch] = AliMUONConstants::DefaultChamberZ(10+ch);
715 }
716
717 TArrayI digitPerTrack(fgkNcathodes);
718
719 Float_t trackIntersectCh[fgkNchambers][fgkNcathodes];
720
721 TArrayI triggeredDigits;
722 triggeredDigits.Set(fgkNchambers);
723 triggeredDigits.Reset(-1);
724
725 TArrayI trigScheme[fgkNcathodes];
726 TArrayI slatThatTriggered[fgkNcathodes];
727 for(Int_t cath=0; cath<fgkNcathodes; cath++){
728 trigScheme[cath].Set(fgkNchambers);
729 slatThatTriggered[cath].Set(fgkNchambers);
730 }
731
732 Int_t boardThatTriggered[fgkNchambers][fgkNcathodes][fgkNlocations];
733 TArrayI nboard[fgkNcathodes];
734 for(Int_t cath=0; cath<fgkNcathodes; cath++){
735 nboard[cath].Set(fgkNlocations);
736 }
737 Int_t ineffBoard[fgkNlocations];
738 for(Int_t loc=0; loc<fgkNlocations; loc++){
739 ineffBoard[loc] = -1;
740 }
741
742 digitPerTrack.Reset();
743 for(Int_t ch=0; ch<fgkNchambers; ch++){
744 zRealMatch[ch] = zMeanChamber[ch];
745 for(Int_t cath=0; cath<fgkNcathodes; cath++){
746 for(Int_t loc=0; loc<fgkNlocations; loc++){
747 boardThatTriggered[ch][cath][loc]=-1;
748 }
749 }
750 }
751
752 for(Int_t cath=0; cath<fgkNcathodes; cath++){
753 slatThatTriggered[cath].Reset(-1);
754 trigScheme[cath].Reset();
755 }
756
757 Bool_t isClearEvent = kTRUE;
758
759 //Float_t x11 = matchedTrigTrack->GetX11();// x position (info from non-bending plane)
760 Float_t y11 = matchedTrigTrack->GetY11();// y position (info from bending plane)
761 Float_t thetaX = matchedTrigTrack->GetThetax();
762 Float_t thetaY = matchedTrigTrack->GetThetay();
763
764 for(Int_t ch=0; ch<fgkNchambers; ch++) { // chamber loop
765 Int_t currCh = chOrder[ch];
b5270f21 766 AliDebug(3, Form("zMeanChamber[%i] = %.2f\tzRealMatch[0] = %.2f\n",currCh,zMeanChamber[currCh],zRealMatch[0]));
683cb6c5 767
768 for(Int_t cath=0; cath<fgkNcathodes; cath++){
769 correctFactor[cath]=1.;
770 }
771 // calculate corrections to trigger track theta
772 if(ch>=1) correctFactor[kNonBending] = zMeanChamber[0]/zRealMatch[0];// corrects x position
773 if(ch>=2) correctFactor[kBending] = (zMeanChamber[2] - zMeanChamber[0]) / (zRealMatch[2] - zRealMatch[0]);// corrects y position
774
775 // searching track intersection with chambers (first approximation)
776 Float_t deltaZ = zMeanChamber[currCh] - zMeanChamber[0];
777 trackIntersectCh[currCh][0] = zMeanChamber[currCh] * TMath::Tan(thetaX) * correctFactor[kNonBending];// x position (info from non-bending plane)
778 trackIntersectCh[currCh][1] = y11 + deltaZ * TMath::Tan(thetaY) * correctFactor[kBending];// y position (info from bending plane)
779 Int_t detElemIdFromTrack = DetElemIdFromPos(trackIntersectCh[currCh][0], trackIntersectCh[currCh][1], 11+currCh, 0);
780 if(detElemIdFromTrack<0) {
781 AliDebug(1, "Warning: trigger track outside trigger chamber\n");
67c201be 782 isClearEvent = kFALSE;
783
784 // track is rejected since the extrapolated track
785 // does not match a slat (border effects)
786 AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackOutsideGeometry);
683cb6c5 787 continue;
788 }
789
790 triggeredDigits[currCh] = FindPadMatchingTrig(digitStore, detElemIdFromTrack, trackIntersectCh[currCh], isMatch, nboard, zRealMatch, y11);
791
792 // if FindPadMatchingTrig = -500 => too many digits matching pad =>
67c201be 793 // => Event not clear => Do not use for efficiency calculation
683cb6c5 794 if(triggeredDigits[currCh]<-100){
795 isClearEvent = kFALSE;
67c201be 796 // track is rejected since it matches many pads
797 AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackMatchesManyPads);
683cb6c5 798 AliDebug(1, Form("Warning: track = %p (%i) matches many pads. Rejected!\n",(void *)matchedTrigTrack, detElemIdFromTrack));
683cb6c5 799 }
800
801 for(Int_t cath=0; cath<fgkNcathodes; cath++){
802 if(!isMatch[cath]) continue;
67c201be 803 AliESDMuonTrack::SetFiredChamber(pattern, cath, currCh);
683cb6c5 804 digitPerTrack[cath]++;
805 trigScheme[cath][currCh]++;
806 slatThatTriggered[cath][currCh] = detElemIdFromTrack;
807 for(Int_t loc=0; loc<fgkNlocations; loc++){
808 boardThatTriggered[currCh][cath][loc] = nboard[cath][loc];
809 }
810 }
811 } // end chamber loop
812
813 for(Int_t cath=0; cath<fgkNcathodes; cath++){
67c201be 814 if(digitPerTrack[cath]<3) {
815 isClearEvent = kFALSE;
816 // track is rejected since the number of associated
817 // digits found is less than 3.
818 AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackMatchesFewPads);
819 AliDebug(1, Form("Warning: found %i digits for trigger track cathode %i.\nRejecting event\n", digitPerTrack[cath],cath));
820 }
683cb6c5 821 }
822
823 if(!isClearEvent) return kFALSE;
824
67c201be 825 AliESDMuonTrack::EAliTriggerChPatternFlag goodForEff = AliESDMuonTrack::kBoardEff;
683cb6c5 826
827 Int_t ineffSlat = -1;
828 Int_t ineffDetElId = -1;
829 Int_t firstSlat = slatThatTriggered[kBending][0]%100;
830 if(firstSlat<0) firstSlat = slatThatTriggered[kBending][1]%100;
831 Int_t firstBoard = boardThatTriggered[0][kBending][0];
832 if(firstBoard<0) firstBoard = boardThatTriggered[1][kBending][0];
833 for(Int_t ch=0; ch<fgkNchambers; ch++){
834 Bool_t isCurrChIneff = kFALSE;
835 Int_t currSlat = slatThatTriggered[kBending][ch]%100;
836 if(currSlat<0){
837 ineffDetElId = DetElemIdFromPos(trackIntersectCh[ch][0], trackIntersectCh[ch][1], 11+ch, kBending);
838 currSlat = ineffDetElId%100;
839 ineffSlat = currSlat;
840 isCurrChIneff = kTRUE;
841 }
842 if(currSlat!=firstSlat) {
67c201be 843 AliESDMuonTrack::AddEffInfo(pattern,
844 AliESDMuonTrack::kCrossDifferentSlats,
845 AliESDMuonTrack::kChEff); // track crosses different slats
683cb6c5 846 return kTRUE;
847 }
848 Bool_t atLeastOneLoc=kFALSE;
849 if(isCurrChIneff) LocalBoardFromPos(trackIntersectCh[ch][0], trackIntersectCh[ch][1], ineffDetElId, kBending, ineffBoard);
850 for(Int_t loc=0; loc<fgkNlocations; loc++){
851 Int_t currBoard = boardThatTriggered[ch][kBending][loc];
852 if(isCurrChIneff) currBoard = ineffBoard[loc];
853 if(currBoard==firstBoard){
854 atLeastOneLoc=kTRUE;
855 break;
856 }
857 }
67c201be 858 if(!atLeastOneLoc) goodForEff = AliESDMuonTrack::kSlatEff;
683cb6c5 859 } // end chamber loop
860
67c201be 861 AliESDMuonTrack::AddEffInfo(pattern, firstSlat, goodForEff);
683cb6c5 862 return kTRUE;
7771752e 863}