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Compilation warning fixed.
[u/mrichter/AliRoot.git] / MUON / AliMUONTrackHitPattern.cxx
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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"
64f628e9 38#include "AliMUONVDigitStore.h"
7771752e 39#include "AliMUONGeometryTransformer.h"
7771752e 40#include "AliMUONLocalTrigger.h"
7771752e 41#include "AliMUONLocalTriggerBoard.h"
a0dc65b4 42#include "AliMUONRecoParam.h"
7ec3b9cf 43#include "AliMUONTrack.h"
44#include "AliMUONTrackExtrap.h"
45#include "AliMUONTrackParam.h"
46#include "AliMUONVTrackStore.h"
47#include "AliMUONVTriggerStore.h"
7771752e 48#include "AliMpPad.h"
7771752e 49#include "AliMpSegmentation.h"
7ec3b9cf 50#include "AliMpVSegmentation.h"
fda59e58 51#include "AliMpDEManager.h"
52#include "AliMUONReconstructor.h"
683cb6c5 53#include "AliMUONTriggerTrack.h"
54#include "AliMUONVTriggerTrackStore.h"
55
56#include "AliMpConstants.h"
ea94c18b 57
ea94c18b 58#include "AliLog.h"
7771752e 59#include "AliTracker.h"
67c201be 60#include "AliESDMuonTrack.h"
ea94c18b 61
7771752e 62#include <Riostream.h>
7ec3b9cf 63#include <TArrayS.h>
7771752e 64#include <TClonesArray.h>
65#include <TMath.h>
66#include <TMatrixD.h>
683cb6c5 67#include <TROOT.h>
68#include <TDirectory.h>
69#include <TFile.h>
70#include <TSystem.h>
6e97fbb8 71#include <TVector2.h>
683cb6c5 72
73#include <cassert>
7771752e 74
75/// \cond CLASSIMP
76ClassImp(AliMUONTrackHitPattern) // Class implementation in ROOT context
77/// \endcond
78
79
80//______________________________________________________________________________
a0dc65b4 81AliMUONTrackHitPattern::AliMUONTrackHitPattern(const AliMUONRecoParam* recoParam,
82 const AliMUONGeometryTransformer& transformer,
64f628e9 83 const AliMUONVDigitStore& digitStore)
a0dc65b4 84: TObject(),
9b1e069f 85fkRecoParam(recoParam),
86fkTransformer(transformer),
64f628e9 87fkDigitStore(digitStore),
a0dc65b4 88fkMaxDistance(99999.)
7771752e 89{
90 /// Default constructor
f7a1cc68 91 AliMUONTrackExtrap::SetField();
7771752e 92}
93
94
95//______________________________________________________________________________
96AliMUONTrackHitPattern::~AliMUONTrackHitPattern(void)
97{
7ec3b9cf 98 /// Destructor
7771752e 99}
100
683cb6c5 101//_____________________________________________________________________________
102void AliMUONTrackHitPattern::CheckConstants() const
103{
104/// Check consistence of redefined constants
105
106 assert(fgkNcathodes == AliMpConstants::NofCathodes());
107 assert(fgkNchambers == AliMpConstants::NofTriggerChambers());
108 assert(fgkNplanes == AliMpConstants::NofTriggerChambers() * fgkNcathodes);
109}
110
111
112//______________________________________________________________________________
9b1e069f 113void AliMUONTrackHitPattern::ExecuteValidation(const AliMUONVTrackStore& trackStore,
683cb6c5 114 const AliMUONVTriggerTrackStore& triggerTrackStore,
115 const AliMUONVTriggerStore& triggerStore) const
116{
117 //
118 /// Main method:
119 /// Loops on reco tracks, extrapolates them to trigger chambers
120 /// and searches for matching trigger tracks and digits
121 //
122
67c201be 123 // Get the hit pattern for all trigger tracks
124 AliMUONTriggerTrack* triggerTrack;
125 TIter itTriggerTrack(triggerTrackStore.CreateIterator());
126 while ( ( triggerTrack = static_cast<AliMUONTriggerTrack*>(itTriggerTrack() ) ) ){
64f628e9 127 UShort_t pattern = GetHitPattern(triggerTrack);
67c201be 128 triggerTrack->SetHitsPatternInTrigCh(pattern);
129 AliDebug(1, Form("Hit pattern: hits 0x%x slat %2i board %3i effFlag %i",
130 pattern & 0xFF, AliESDMuonTrack::GetSlatOrInfo(pattern),
131 triggerTrack->GetLoTrgNum(), AliESDMuonTrack::GetEffFlag(pattern)));
132 }
683cb6c5 133
67c201be 134 // Match tracker tracks with trigger tracks.
683cb6c5 135 TIter itTrack(trackStore.CreateIterator());
136 AliMUONTrack* track;
137
138 const Int_t kFirstTrigCh = AliMUONConstants::NTrackingCh();
139
140 while ( ( track = static_cast<AliMUONTrack*>(itTrack()) ) )
141 {
142 AliMUONTrackParam trackParam(*((AliMUONTrackParam*) (track->GetTrackParamAtCluster()->Last())));
143
144 ApplyMCSCorrections(trackParam);
145 AliMUONTrackExtrap::ExtrapToZCov(&trackParam, AliMUONConstants::DefaultChamberZ(kFirstTrigCh)); // extrap to 1st trigger chamber
146
147 AliMUONTriggerTrack *matchedTriggerTrack = MatchTriggerTrack(track, trackParam, triggerTrackStore, triggerStore);
148
67c201be 149 // Copy trigger tracks hit pattern if there is matching,
150 // otherwise calculate the hit pattern directly from tracker track:
151 // the obtained pattern is good for check, but not good for efficiency determination.
152 UShort_t pattern = matchedTriggerTrack ?
153 matchedTriggerTrack->GetHitsPatternInTrigCh() :
64f628e9 154 GetHitPattern(&trackParam);
67c201be 155
683cb6c5 156 track->SetHitsPatternInTrigCh(pattern);
157 }
158}
159
160
161//______________________________________________________________________________
162AliMUONTriggerTrack *
163AliMUONTrackHitPattern::MatchTriggerTrack(AliMUONTrack* track,
164 AliMUONTrackParam& trackParam,
165 const AliMUONVTriggerTrackStore& triggerTrackStore,
166 const AliMUONVTriggerStore& triggerStore) const
167{
168 //
169 /// Match track with trigger track
170 //
171
172 Int_t matchTrigger = 0;
173 Int_t loTrgNum(-1);
bdfb6eef 174 TMatrixD paramDiff(3,1);
683cb6c5 175 Double_t chi2;
176 Double_t chi2MatchTrigger = 0., minChi2MatchTrigger = 999.;
177 Int_t doubleMatch = -1; // Check if track matches 2 trigger tracks
178 Double_t doubleChi2 = -1.;
179 AliMUONTriggerTrack* doubleTriggerTrack = 0x0;
180 AliMUONTriggerTrack* matchedTriggerTrack = 0x0;
7ec3b9cf 181
683cb6c5 182
bdfb6eef 183 // Covariance matrix 3x3 (X,Y,slopeY) for trigger tracks
683cb6c5 184 TMatrixD trackCov(3,3);
fda59e58 185
683cb6c5 186 AliMUONTriggerTrack *triggerTrack;
187 TIter itTriggerTrack(triggerTrackStore.CreateIterator());
188 while ( ( triggerTrack = static_cast<AliMUONTriggerTrack*>(itTriggerTrack() ) ) )
189 {
bdfb6eef 190 AliMUONTrackExtrap::LinearExtrapToZCov(&trackParam, triggerTrack->GetZ11());
191 const TMatrixD& kParamCov = trackParam.GetCovariances();
192
193 Double_t xTrack = trackParam.GetNonBendingCoor();
194 Double_t yTrack = trackParam.GetBendingCoor();
195 Double_t ySlopeTrack = trackParam.GetBendingSlope();
196
197 paramDiff(0,0) = triggerTrack->GetX11() - xTrack;
198 paramDiff(1,0) = triggerTrack->GetY11() - yTrack;
199 paramDiff(2,0) = triggerTrack->GetSlopeY() - ySlopeTrack;
200
201 // Covariance matrix 3x3 (X,Y,slopeY) for tracker tracks
202 trackCov.Zero();
203 trackCov(0,0) = kParamCov(0,0);
204 trackCov(1,1) = kParamCov(2,2);
205 trackCov(2,2) = kParamCov(3,3);
206 trackCov(1,2) = kParamCov(2,3);
207 trackCov(2,1) = kParamCov(3,2);
208
209 // Covariance matrix 3x3 (X,Y,slopeY) for trigger tracks
210 TMatrixD trigCov(triggerTrack->GetCovariances());
211
212 TMatrixD sumCov(trackCov,TMatrixD::kPlus,trigCov);
213 if (sumCov.Determinant() != 0) {
214 sumCov.Invert();
215
683cb6c5 216 TMatrixD tmp(sumCov,TMatrixD::kMult,paramDiff);
217 TMatrixD chi2M(paramDiff,TMatrixD::kTransposeMult,tmp);
bdfb6eef 218 chi2 = chi2M(0,0);
219 } else {
220 AliWarning(" Determinant = 0");
221 Double_t sigma2 = 0.;
683cb6c5 222 chi2 = 0.;
bdfb6eef 223 for (Int_t iVar = 0; iVar < 3; iVar++) {
224 sigma2 = trackCov(iVar,iVar) + trigCov(iVar,iVar);
225 chi2 += paramDiff(iVar,0) * paramDiff(iVar,0) / sigma2;
226 }
683cb6c5 227 }
fda59e58 228
683cb6c5 229 chi2 /= 3.; // Normalized Chi2: 3 degrees of freedom (X,Y,slopeY)
a0dc65b4 230 if (chi2 < GetRecoParam()->GetMaxNormChi2MatchTrigger())
7ec3b9cf 231 {
683cb6c5 232 Bool_t isDoubleTrack = (TMath::Abs(chi2 - minChi2MatchTrigger)<1.);
a0dc65b4 233 if (chi2 < minChi2MatchTrigger && chi2 < GetRecoParam()->GetMaxNormChi2MatchTrigger())
7ec3b9cf 234 {
683cb6c5 235 if(isDoubleTrack)
236 {
237 doubleMatch = loTrgNum;
238 doubleChi2 = chi2MatchTrigger;
239 doubleTriggerTrack = matchedTriggerTrack;
fda59e58 240 }
683cb6c5 241 minChi2MatchTrigger = chi2;
242 chi2MatchTrigger = chi2;
243 loTrgNum = triggerTrack->GetLoTrgNum();
244 matchedTriggerTrack = triggerTrack;
245 AliMUONLocalTrigger* locTrg = triggerStore.FindLocal(loTrgNum);
246 matchTrigger = 1;
247 if(locTrg->LoLpt()>0) matchTrigger = 2;
248 if(locTrg->LoHpt()>0) matchTrigger = 3;
249 }
250 else if(isDoubleTrack)
251 {
252 doubleMatch = triggerTrack->GetLoTrgNum();
253 doubleChi2 = chi2;
7ec3b9cf 254 }
7771752e 255 }
683cb6c5 256 }
257 if(doubleMatch>=0)
258 { // If two trigger tracks match, select the one passing more trigger cuts
259 AliDebug(1, Form("Two candidates found: %i and %i",loTrgNum,doubleMatch));
260 AliMUONLocalTrigger* locTrg1 = triggerStore.FindLocal(doubleMatch);
261 if((locTrg1->LoLpt()>0 && matchTrigger<2) || (locTrg1->LoHpt() && matchTrigger<3))
262 {
263 if(locTrg1->LoHpt()>0) matchTrigger=3;
264 else matchTrigger = 2;
265 loTrgNum = doubleMatch;
266 chi2MatchTrigger = doubleChi2;
267 matchedTriggerTrack = doubleTriggerTrack;
268 }
269 }
270
271 track->SetMatchTrigger(matchTrigger);
683cb6c5 272 track->SetChi2MatchTrigger(chi2MatchTrigger);
273
274 AliMUONLocalTrigger* locTrg = static_cast<AliMUONLocalTrigger*>(triggerStore.FindLocal(loTrgNum));
275
276 if (locTrg)
277 {
278 track->SetLocalTrigger(locTrg->LoCircuit(),
279 locTrg->LoStripX(),
280 locTrg->LoStripY(),
00d46f24 281 locTrg->GetDeviation(),
683cb6c5 282 locTrg->LoLpt(),
00d46f24 283 locTrg->LoHpt(),
284 locTrg->GetTriggerWithoutChamber());
683cb6c5 285 }
286
287 return matchedTriggerTrack;
288}
289
290
291//______________________________________________________________________________
64f628e9 292UShort_t AliMUONTrackHitPattern::GetHitPattern(AliMUONTriggerTrack* matchedTriggerTrack) const
683cb6c5 293{
294 //
67c201be 295 /// Get hit pattern on trigger chambers for the current trigger track
683cb6c5 296 //
297 UShort_t pattern = 0;
64f628e9 298 PerformTrigTrackMatch(pattern, matchedTriggerTrack);
67c201be 299 return pattern;
300}
683cb6c5 301
54355f2c 302
67c201be 303//______________________________________________________________________________
64f628e9 304UShort_t AliMUONTrackHitPattern::GetHitPattern(AliMUONTrackParam* trackParam) const
67c201be 305{
306 //
307 /// Get hit pattern on trigger chambers for the current tracker track
308 //
309 UShort_t pattern = 0;
310 Bool_t isMatch[2];
311 const Int_t kNTrackingCh = AliMUONConstants::NTrackingCh();
683cb6c5 312
313 for(Int_t ch=0; ch<4; ++ch)
314 {
315 Int_t iChamber = kNTrackingCh+ch;
54355f2c 316 AliMUONTrackExtrap::ExtrapToZCov(trackParam, AliMUONConstants::DefaultChamberZ(iChamber));
64f628e9 317 FindPadMatchingTrack(*trackParam, isMatch, iChamber);
683cb6c5 318 for(Int_t cath=0; cath<2; ++cath)
319 {
67c201be 320 if(isMatch[cath]) AliESDMuonTrack::SetFiredChamber(pattern, cath, ch);
683cb6c5 321 }
322 }
683cb6c5 323
67c201be 324 // pattern obtained by propagation of tracker track
325 // when it does not match the trigger.
326 AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackerTrackPattern);
683cb6c5 327
67c201be 328 return pattern;
683cb6c5 329}
330
683cb6c5 331//______________________________________________________________________________
332void
333AliMUONTrackHitPattern::ApplyMCSCorrections(AliMUONTrackParam& trackParam) const
334{
335 //
336 /// Returns uncertainties on extrapolated position.
337 /// Takes into account Branson plane corrections in the iron wall.
338 //
339
340 const Float_t kZFilterOut = AliMUONConstants::MuonFilterZEnd();
37a615ac 341 const Float_t kFilterThickness = kZFilterOut-AliMUONConstants::MuonFilterZBeg(); // cm
683cb6c5 342
343 AliMUONTrackExtrap::ExtrapToZCov(&trackParam, kZFilterOut); // Extrap to muon filter end
344 AliMUONTrackExtrap::AddMCSEffect(&trackParam, kFilterThickness, AliMUONConstants::MuonFilterX0()); // Add MCS effects
345 return;
346}
347
348
7771752e 349//______________________________________________________________________________
7ec3b9cf 350void
64f628e9 351AliMUONTrackHitPattern::FindPadMatchingTrack(const AliMUONTrackParam& trackParam,
fda59e58 352 Bool_t isMatch[2], Int_t iChamber) const
7771752e 353{
354 //
683cb6c5 355 /// Given the tracker track position, searches for matching digits.
7771752e 356 //
357
358 Float_t minMatchDist[2];
359
7ec3b9cf 360 for(Int_t cath=0; cath<2; ++cath)
361 {
362 isMatch[cath]=kFALSE;
683cb6c5 363 minMatchDist[cath]=fkMaxDistance/10.;
7771752e 364 }
365
64f628e9 366 TIter next(fkDigitStore.CreateTriggerIterator());
7ec3b9cf 367 AliMUONVDigit* mDigit;
fda59e58 368
7ec3b9cf 369 while ( ( mDigit = static_cast<AliMUONVDigit*>(next()) ) )
370 {
371 Int_t currDetElemId = mDigit->DetElemId();
fda59e58 372 Int_t currCh = AliMpDEManager::GetChamberId(currDetElemId);
373 if(currCh!=iChamber) continue;
7ec3b9cf 374 Int_t cathode = mDigit->Cathode();
375 Int_t ix = mDigit->PadX();
376 Int_t iy = mDigit->PadY();
377 Float_t xpad, ypad, zpad;
378 const AliMpVSegmentation* seg = AliMpSegmentation::Instance()
379 ->GetMpSegmentation(currDetElemId,AliMp::GetCathodType(cathode));
380
168e9c4d 381 AliMpPad pad = seg->PadByIndices(ix,iy,kTRUE);
6e97fbb8 382 Float_t xlocal1 = pad.GetPositionX();
383 Float_t ylocal1 = pad.GetPositionY();
384 Float_t dpx = pad.GetDimensionX();
385 Float_t dpy = pad.GetDimensionY();
386
9b1e069f 387 fkTransformer.Local2Global(currDetElemId, xlocal1, ylocal1, 0, xpad, ypad, zpad);
7ec3b9cf 388 Float_t matchDist = MinDistanceFromPad(xpad, ypad, zpad, dpx, dpy, trackParam);
389 if(matchDist>minMatchDist[cathode])continue;
390 isMatch[cathode] = kTRUE;
fda59e58 391 if(isMatch[0] && isMatch[1]) break;
7ec3b9cf 392 minMatchDist[cathode] = matchDist;
7771752e 393 }
7771752e 394}
395
396
397//______________________________________________________________________________
7ec3b9cf 398Float_t
399AliMUONTrackHitPattern::MinDistanceFromPad(Float_t xPad, Float_t yPad, Float_t zPad,
400 Float_t dpx, Float_t dpy,
401 const AliMUONTrackParam& trackParam) const
7771752e 402{
403 //
683cb6c5 404 /// Decides if the digit belongs to the tracker track.
7771752e 405 //
7771752e 406
fda59e58 407 AliMUONTrackParam trackParamAtPadZ(trackParam);
bdfb6eef 408 AliMUONTrackExtrap::LinearExtrapToZCov(&trackParamAtPadZ, zPad);
fda59e58 409
410 Float_t xTrackAtPad = trackParamAtPadZ.GetNonBendingCoor();
411 Float_t yTrackAtPad = trackParamAtPadZ.GetBendingCoor();
7771752e 412
a0dc65b4 413 const Float_t kNSigma = GetRecoParam()->GetSigmaCutForTrigger();
fda59e58 414
415 const TMatrixD& kCovParam = trackParamAtPadZ.GetCovariances();
416
417 Float_t sigmaX = TMath::Sqrt(kCovParam(0,0));
418 Float_t sigmaY = TMath::Sqrt(kCovParam(2,2));
419
420 Float_t maxDistX = kNSigma * sigmaX; // in cm
421 Float_t maxDistY = kNSigma * sigmaY; // in cm
7771752e 422
423 Float_t deltaX = TMath::Abs(xPad-xTrackAtPad)-dpx;
424 Float_t deltaY = TMath::Abs(yPad-yTrackAtPad)-dpy;
425
683cb6c5 426 Float_t matchDist = fkMaxDistance;
7771752e 427 if(deltaX<=maxDistX && deltaY<=maxDistY) matchDist = TMath::Max(deltaX, deltaY);
fda59e58 428
7771752e 429 return matchDist;
430}
431
432
683cb6c5 433//_____________________________________________________________________________
64f628e9 434Int_t AliMUONTrackHitPattern::FindPadMatchingTrig(Int_t &detElemId,
683cb6c5 435 Float_t coor[2], Bool_t isMatch[2],
436 TArrayI nboard[2], TArrayF &zRealMatch, Float_t y11) const
437{
438 //
439 /// Check slat and board number of digit matching trigger track
440 //
441
442 enum {kBending, kNonBending};
443
444 Float_t minMatchDist[fgkNcathodes];
445 Int_t padsInCheckArea[fgkNcathodes];
446
447 for(Int_t cath=0; cath<fgkNcathodes; cath++){
448 isMatch[cath] = kFALSE;
449 minMatchDist[cath] = fkMaxDistance/10.;
450 padsInCheckArea[cath] = 0;
451 }
452 Int_t iChamber = AliMpDEManager::GetChamberId(detElemId);
453 Int_t ch = iChamber-10;
454 Float_t oldDeltaZ = AliMUONConstants::DefaultChamberZ(iChamber) - AliMUONConstants::DefaultChamberZ(10);
455 Float_t y = coor[1];
456 Int_t iSlat = detElemId%100;
457 Int_t trigDigitBendPlane = -1;
458 Int_t foundDetElemId = detElemId;
459 Float_t foundZmatch=999.;
460 Float_t yCoorAtPadZ=999.;
461
64f628e9 462 TIter next(fkDigitStore.CreateTriggerIterator());
683cb6c5 463 AliMUONVDigit* mDigit;
464 Int_t idigit=0;
465
466 while ( ( mDigit = static_cast<AliMUONVDigit*>(next()) ) )
467 {
468 idigit++;
469 Int_t currDetElemId = mDigit->DetElemId();
470 Int_t currCh = AliMpDEManager::GetChamberId(currDetElemId);
471 if(currCh!=iChamber) continue;
472 Int_t currSlat = currDetElemId%100;
473 Int_t slatDiff = TMath::Abs(currSlat-iSlat);
474 if(slatDiff>1 && slatDiff<17) continue; // Check neighbour slats
475 Int_t cathode = mDigit->Cathode();
476 Int_t ix = mDigit->PadX();
477 Int_t iy = mDigit->PadY();
478 Float_t xpad, ypad, zpad;
479 const AliMpVSegmentation* seg = AliMpSegmentation::Instance()
480 ->GetMpSegmentation(currDetElemId,AliMp::GetCathodType(cathode));
481
168e9c4d 482 AliMpPad pad = seg->PadByIndices(ix,iy,kTRUE);
6e97fbb8 483 Float_t xlocal1 = pad.GetPositionX();
484 Float_t ylocal1 = pad.GetPositionY();
485 Float_t dpx = pad.GetDimensionX();
486 Float_t dpy = pad.GetDimensionY();
487
9b1e069f 488 fkTransformer.Local2Global(currDetElemId, xlocal1, ylocal1, 0, xpad, ypad, zpad);
b5270f21 489 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 490 // searching track intersection with chambers (second approximation)
491 if(ch%2==1){
492 //if(iChamber%2==1){
493 Float_t deltaZ = zpad - zRealMatch[0];
494 y = (coor[1]-y11)*deltaZ/oldDeltaZ + y11;
495 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));
496 }
497 Float_t matchDist = PadMatchTrack(xpad, ypad, dpx, dpy, coor[0], y);
498 if(matchDist<fkMaxDistance/2.) padsInCheckArea[cathode]++;
499 if(matchDist>minMatchDist[cathode])continue;
500 isMatch[cathode] = kTRUE;
501 minMatchDist[cathode] = matchDist;
502 foundDetElemId = currDetElemId;
503 foundZmatch=zpad;
504 yCoorAtPadZ=y;
505 if(cathode==kBending) trigDigitBendPlane = idigit;
506 for (Int_t loc=0; loc<pad.GetNofLocations(); loc++){
168e9c4d 507 nboard[cathode][loc] = pad.GetLocalBoardId(loc);
683cb6c5 508 }
509 for(Int_t loc=pad.GetNofLocations(); loc<fgkNlocations; loc++){
510 nboard[cathode][loc]=-1;
511 }
683cb6c5 512 }
513
683cb6c5 514 if(isMatch[kBending] || isMatch[kNonBending]){
515 detElemId = foundDetElemId;
516 zRealMatch[ch] = foundZmatch;
517 coor[1] = yCoorAtPadZ;
518 }
67c201be 519
520 // If track matches many pads, it is not good for effciency determination.
521 // However we still want to calculate the hit pattern.
522 for(Int_t cath=0; cath<fgkNcathodes; cath++){
523 if(padsInCheckArea[cath]>2) {
524 AliDebug(1, Form("padsInCheckArea[%i] = %i\n",cath,padsInCheckArea[cath]));
525 return -500;
526 }
527 }
528
683cb6c5 529 return trigDigitBendPlane;
530}
531
532//_____________________________________________________________________________
533Float_t AliMUONTrackHitPattern::PadMatchTrack(Float_t xPad, Float_t yPad,
534 Float_t dpx, Float_t dpy,
535 Float_t xTrackAtPad, Float_t yTrackAtPad) const
536{
537 //
538 /// Decides if the digit belongs to the trigger track.
539 //
540
a0dc65b4 541 Float_t maxDist = GetRecoParam()->GetStripCutForTrigger() * 2. * TMath::Min(dpx,dpy); // cm
b5270f21 542 if(maxDist<2.) maxDist = 2.;
a0dc65b4 543 Float_t maxDistCheckArea = GetRecoParam()->GetMaxStripAreaForTrigger() * 2. * TMath::Min(dpx,dpy); // cm
683cb6c5 544
545 Float_t matchDist = fkMaxDistance;
546
547 Float_t deltaX = TMath::Abs(xPad-xTrackAtPad)-dpx;
548 Float_t deltaY = TMath::Abs(yPad-yTrackAtPad)-dpy;
549 Float_t maxDistX = maxDist;
550 Float_t maxDistY = maxDist;
551
552 if(deltaX<=maxDistX && deltaY<=maxDistY) matchDist = TMath::Max(deltaX, deltaY);
553 else if(deltaX<=maxDistCheckArea && deltaY<=maxDistCheckArea) matchDist = fkMaxDistance/5.;
554 return matchDist;
555}
556
557
558//_____________________________________________________________________________
559Int_t AliMUONTrackHitPattern::DetElemIdFromPos(Float_t x, Float_t y,
560 Int_t chamber, Int_t cathode) const
561{
562 //
563 /// Given the (x,y) position in the chamber,
564 /// it returns the corresponding slat
565 //
566
567 Int_t resultingDetElemId = -1;
568 AliMpDEIterator it;
569 Float_t minDist = 999.;
570 for ( it.First(chamber-1); ! it.IsDone(); it.Next() ){
571 Int_t detElemId = it.CurrentDEId();
572 Int_t ich = detElemId/100-10;
573 Float_t tolerance=0.2*((Float_t)ich);
574 Float_t currDist=9999.;
575
576 const AliMpVSegmentation* seg =
577 AliMpSegmentation::Instance()
578 ->GetMpSegmentation(detElemId,AliMp::GetCathodType(cathode));
579 if (!seg) continue;
580
6e97fbb8 581 Float_t deltax = seg->GetDimensionX();
582 Float_t deltay = seg->GetDimensionY();
683cb6c5 583 Float_t xlocal1 = -deltax;
584 Float_t ylocal1 = -deltay;
585 Float_t xlocal2 = +deltax;
586 Float_t ylocal2 = +deltay;
587 Float_t xg01, yg01, zg1, xg02, yg02, zg2;
9b1e069f 588 fkTransformer.Local2Global(detElemId, xlocal1, ylocal1, 0, xg01, yg01, zg1);
589 fkTransformer.Local2Global(detElemId, xlocal2, ylocal2, 0, xg02, yg02, zg2);
683cb6c5 590
591 Float_t xg1 = xg01, xg2 = xg02, yg1 = yg01, yg2 = yg02;
592
593 if(xg01>xg02){
594 xg1 = xg02;
595 xg2 = xg01;
596 }
597 if(yg01>yg02){
598 yg1 = yg02;
599 yg2 = yg01;
600 }
601
602 if(x>=xg1-tolerance && x<=xg2+tolerance && y>=yg1-tolerance && y<=yg2+tolerance){ // takes into account errors in extrapolation
603 if(y<yg1) currDist = yg1-y;
604 else if(y>yg2) currDist = y-yg2;
605 if(currDist<minDist) {
606 resultingDetElemId = detElemId;
607 minDist=currDist;
608 continue;
609 }
610 resultingDetElemId = detElemId;
611 break;
612 }
613 } // loop on detElemId
614 return resultingDetElemId;
615}
616
617
618//_____________________________________________________________________________
619void AliMUONTrackHitPattern::LocalBoardFromPos(Float_t x, Float_t y,
620 Int_t detElemId, Int_t cathode,
621 Int_t localBoard[4]) const
622{
623 //
624 /// Given the (x,y) position in the chamber,
625 /// it returns the corresponding local board
626 //
627
628 for(Int_t loc=0; loc<fgkNlocations; loc++){
629 localBoard[loc]=-1;
630 }
4e116cd5 631 Float_t xg, yg, zg;
632 fkTransformer.Local2Global(detElemId, 0., 0., 0., xg, yg, zg);
633 Float_t z = zg - (y-yg)*TMath::Tan(TMath::DegToRad()*AliMUONConstants::St345Inclination());
683cb6c5 634 Float_t xl, yl, zl;
4e116cd5 635 fkTransformer.Global2Local(detElemId, x, y, z, xl, yl, zl);
683cb6c5 636 const AliMpVSegmentation* seg =
637 AliMpSegmentation::Instance()
638 ->GetMpSegmentation(detElemId,AliMp::GetCathodType(cathode));
4e116cd5 639 if ( ! seg ) return;
640 AliMpPad pad = seg->PadByPosition(xl,yl,kFALSE);
641 if ( ! pad.IsValid() ){
642 AliWarning(Form("Pad not found! DetElemId %i position global (%f, %f, %f) local (%f, %f, %f)\n", detElemId, x, y, z, xl, yl, zl));
643 return;
644 }
645
646 AliDebug(2, Form("\nWould match: DetElemId = %i Pad = (%i,%i) = (%.2f,%.2f,%.2f) Board %3i\n",detElemId,pad.GetIx(),pad.GetIy(),xl,yl,zl,pad.GetLocalBoardId(0)));
647
648 for (Int_t loc=0; loc<pad.GetNofLocations(); loc++){
649 localBoard[loc] = pad.GetLocalBoardId(loc);
683cb6c5 650 }
651}
652
653
654//_____________________________________________________________________________
655Bool_t AliMUONTrackHitPattern::PerformTrigTrackMatch(UShort_t &pattern,
64f628e9 656 const AliMUONTriggerTrack* matchedTrigTrack) const
7771752e 657{
fda59e58 658 //
683cb6c5 659 /// It searches for matching digits around the trigger track.
fda59e58 660 //
7771752e 661
683cb6c5 662 enum {kBending, kNonBending};
7771752e 663
683cb6c5 664 Int_t chOrder[fgkNchambers] = {0,2,1,3};
665
666 TArrayF zRealMatch(fgkNchambers);
683cb6c5 667
668 Bool_t isMatch[fgkNcathodes];
669 for(Int_t cath=0; cath<fgkNcathodes; cath++){
670 isMatch[cath] = kFALSE;
671 }
672
673 TArrayF zMeanChamber(fgkNchambers);
bdfb6eef 674 zMeanChamber[0] = matchedTrigTrack->GetZ11();
675 zMeanChamber[1] = matchedTrigTrack->GetZ11() + AliMUONConstants::DefaultChamberZ(11) - AliMUONConstants::DefaultChamberZ(10);
676 zMeanChamber[2] = matchedTrigTrack->GetZ21();
677 zMeanChamber[3] = matchedTrigTrack->GetZ21() + AliMUONConstants::DefaultChamberZ(13) - AliMUONConstants::DefaultChamberZ(12);
683cb6c5 678
679 TArrayI digitPerTrack(fgkNcathodes);
680
681 Float_t trackIntersectCh[fgkNchambers][fgkNcathodes];
682
683 TArrayI triggeredDigits;
684 triggeredDigits.Set(fgkNchambers);
685 triggeredDigits.Reset(-1);
686
687 TArrayI trigScheme[fgkNcathodes];
688 TArrayI slatThatTriggered[fgkNcathodes];
689 for(Int_t cath=0; cath<fgkNcathodes; cath++){
690 trigScheme[cath].Set(fgkNchambers);
691 slatThatTriggered[cath].Set(fgkNchambers);
692 }
693
694 Int_t boardThatTriggered[fgkNchambers][fgkNcathodes][fgkNlocations];
695 TArrayI nboard[fgkNcathodes];
696 for(Int_t cath=0; cath<fgkNcathodes; cath++){
697 nboard[cath].Set(fgkNlocations);
698 }
699 Int_t ineffBoard[fgkNlocations];
700 for(Int_t loc=0; loc<fgkNlocations; loc++){
701 ineffBoard[loc] = -1;
702 }
703
704 digitPerTrack.Reset();
705 for(Int_t ch=0; ch<fgkNchambers; ch++){
706 zRealMatch[ch] = zMeanChamber[ch];
707 for(Int_t cath=0; cath<fgkNcathodes; cath++){
708 for(Int_t loc=0; loc<fgkNlocations; loc++){
709 boardThatTriggered[ch][cath][loc]=-1;
710 }
711 }
712 }
713
714 for(Int_t cath=0; cath<fgkNcathodes; cath++){
715 slatThatTriggered[cath].Reset(-1);
716 trigScheme[cath].Reset();
717 }
718
719 Bool_t isClearEvent = kTRUE;
720
683cb6c5 721 Float_t y11 = matchedTrigTrack->GetY11();// y position (info from bending plane)
bdfb6eef 722 Float_t slopeX = matchedTrigTrack->GetSlopeX();
723 Float_t slopeY = matchedTrigTrack->GetSlopeY();
683cb6c5 724
725 for(Int_t ch=0; ch<fgkNchambers; ch++) { // chamber loop
726 Int_t currCh = chOrder[ch];
b5270f21 727 AliDebug(3, Form("zMeanChamber[%i] = %.2f\tzRealMatch[0] = %.2f\n",currCh,zMeanChamber[currCh],zRealMatch[0]));
683cb6c5 728
683cb6c5 729 // searching track intersection with chambers (first approximation)
730 Float_t deltaZ = zMeanChamber[currCh] - zMeanChamber[0];
bdfb6eef 731 trackIntersectCh[currCh][0] = zMeanChamber[currCh] * slopeX;
732 trackIntersectCh[currCh][1] = y11 + deltaZ * slopeY;
683cb6c5 733 Int_t detElemIdFromTrack = DetElemIdFromPos(trackIntersectCh[currCh][0], trackIntersectCh[currCh][1], 11+currCh, 0);
734 if(detElemIdFromTrack<0) {
735 AliDebug(1, "Warning: trigger track outside trigger chamber\n");
67c201be 736 isClearEvent = kFALSE;
737
738 // track is rejected since the extrapolated track
739 // does not match a slat (border effects)
740 AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackOutsideGeometry);
683cb6c5 741 continue;
742 }
743
64f628e9 744 triggeredDigits[currCh] = FindPadMatchingTrig(detElemIdFromTrack, trackIntersectCh[currCh], isMatch, nboard, zRealMatch, y11);
683cb6c5 745
746 // if FindPadMatchingTrig = -500 => too many digits matching pad =>
67c201be 747 // => Event not clear => Do not use for efficiency calculation
683cb6c5 748 if(triggeredDigits[currCh]<-100){
749 isClearEvent = kFALSE;
67c201be 750 // track is rejected since it matches many pads
751 AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackMatchesManyPads);
683cb6c5 752 AliDebug(1, Form("Warning: track = %p (%i) matches many pads. Rejected!\n",(void *)matchedTrigTrack, detElemIdFromTrack));
683cb6c5 753 }
754
755 for(Int_t cath=0; cath<fgkNcathodes; cath++){
756 if(!isMatch[cath]) continue;
67c201be 757 AliESDMuonTrack::SetFiredChamber(pattern, cath, currCh);
683cb6c5 758 digitPerTrack[cath]++;
759 trigScheme[cath][currCh]++;
760 slatThatTriggered[cath][currCh] = detElemIdFromTrack;
761 for(Int_t loc=0; loc<fgkNlocations; loc++){
762 boardThatTriggered[currCh][cath][loc] = nboard[cath][loc];
763 }
764 }
765 } // end chamber loop
766
767 for(Int_t cath=0; cath<fgkNcathodes; cath++){
67c201be 768 if(digitPerTrack[cath]<3) {
769 isClearEvent = kFALSE;
770 // track is rejected since the number of associated
771 // digits found is less than 3.
772 AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackMatchesFewPads);
773 AliDebug(1, Form("Warning: found %i digits for trigger track cathode %i.\nRejecting event\n", digitPerTrack[cath],cath));
774 }
683cb6c5 775 }
776
777 if(!isClearEvent) return kFALSE;
778
67c201be 779 AliESDMuonTrack::EAliTriggerChPatternFlag goodForEff = AliESDMuonTrack::kBoardEff;
683cb6c5 780
781 Int_t ineffSlat = -1;
782 Int_t ineffDetElId = -1;
783 Int_t firstSlat = slatThatTriggered[kBending][0]%100;
784 if(firstSlat<0) firstSlat = slatThatTriggered[kBending][1]%100;
785 Int_t firstBoard = boardThatTriggered[0][kBending][0];
786 if(firstBoard<0) firstBoard = boardThatTriggered[1][kBending][0];
787 for(Int_t ch=0; ch<fgkNchambers; ch++){
788 Bool_t isCurrChIneff = kFALSE;
789 Int_t currSlat = slatThatTriggered[kBending][ch]%100;
790 if(currSlat<0){
791 ineffDetElId = DetElemIdFromPos(trackIntersectCh[ch][0], trackIntersectCh[ch][1], 11+ch, kBending);
792 currSlat = ineffDetElId%100;
793 ineffSlat = currSlat;
794 isCurrChIneff = kTRUE;
795 }
796 if(currSlat!=firstSlat) {
67c201be 797 AliESDMuonTrack::AddEffInfo(pattern,
798 AliESDMuonTrack::kCrossDifferentSlats,
799 AliESDMuonTrack::kChEff); // track crosses different slats
683cb6c5 800 return kTRUE;
801 }
802 Bool_t atLeastOneLoc=kFALSE;
803 if(isCurrChIneff) LocalBoardFromPos(trackIntersectCh[ch][0], trackIntersectCh[ch][1], ineffDetElId, kBending, ineffBoard);
804 for(Int_t loc=0; loc<fgkNlocations; loc++){
805 Int_t currBoard = boardThatTriggered[ch][kBending][loc];
806 if(isCurrChIneff) currBoard = ineffBoard[loc];
807 if(currBoard==firstBoard){
808 atLeastOneLoc=kTRUE;
809 break;
810 }
811 }
67c201be 812 if(!atLeastOneLoc) goodForEff = AliESDMuonTrack::kSlatEff;
683cb6c5 813 } // end chamber loop
814
67c201be 815 AliESDMuonTrack::AddEffInfo(pattern, firstSlat, goodForEff);
683cb6c5 816 return kTRUE;
7771752e 817}