Line data Source code
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 : /// \class AliMUONTrackHitPattern
21 : ///
22 : /// This class propagates tracks to trigger chambers
23 : /// searching for matching trigger tracks and fired strips.
24 : ///
25 : /// To each track, a hit pattern for trigger chambers is set.
26 : ///
27 : /// The main method is:
28 : /// * ExecuteValidation
29 : ///
30 : /// \author Diego Stocco
31 : //-----------------------------------------------------------------------------
32 :
33 :
34 : #include "AliMUONTrackHitPattern.h"
35 :
36 : #include "AliMUONConstants.h"
37 : #include "AliMUONVDigit.h"
38 : #include "AliMUONVDigitStore.h"
39 : #include "AliMUONGeometryTransformer.h"
40 : #include "AliMUONLocalTrigger.h"
41 : #include "AliMUONRecoParam.h"
42 : #include "AliMUONTrack.h"
43 : #include "AliMUONTrackExtrap.h"
44 : #include "AliMUONTrackParam.h"
45 : #include "AliMUONVTrackStore.h"
46 : #include "AliMUONVTriggerStore.h"
47 : #include "AliMUONTriggerTrack.h"
48 : #include "AliMUONVTriggerTrackStore.h"
49 : #include "AliMUONTriggerUtilities.h"
50 :
51 : #include "AliMpPad.h"
52 : #include "AliMpSegmentation.h"
53 : #include "AliMpVSegmentation.h"
54 : #include "AliMpDEManager.h"
55 : #include "AliMpArea.h"
56 : #include "AliMpConstants.h"
57 :
58 : #include "AliLog.h"
59 : #include "AliESDMuonTrack.h"
60 : #include "AliCodeTimer.h"
61 :
62 : #include <Riostream.h>
63 : #include <TArrayI.h>
64 : #include <TMath.h>
65 : #include <TMatrixD.h>
66 : #include <TVector3.h>
67 : #include <TArrayF.h>
68 : #include <TRandom.h>
69 :
70 : /// \cond CLASSIMP
71 18 : ClassImp(AliMUONTrackHitPattern) // Class implementation in ROOT context
72 : /// \endcond
73 :
74 :
75 : //______________________________________________________________________________
76 : AliMUONTrackHitPattern::AliMUONTrackHitPattern(const AliMUONRecoParam* recoParam,
77 : const AliMUONGeometryTransformer& transformer,
78 : const AliMUONVDigitStore& digitStore,
79 : const AliMUONTriggerUtilities* triggerUtilities)
80 2 : : TObject(),
81 2 : fkRecoParam(recoParam),
82 2 : fkTransformer(transformer),
83 2 : fkDigitStore(digitStore),
84 2 : fkTriggerUtilities(triggerUtilities),
85 2 : fkMaxDistance(99999.) // obsolete
86 10 : {
87 : /// Default constructor
88 2 : AliMUONTrackExtrap::SetField();
89 4 : }
90 :
91 :
92 : //______________________________________________________________________________
93 : AliMUONTrackHitPattern::~AliMUONTrackHitPattern(void)
94 8 : {
95 : /// Destructor
96 8 : }
97 :
98 :
99 : //______________________________________________________________________________
100 : void
101 : AliMUONTrackHitPattern::ApplyMCSCorrections(AliMUONTrackParam& trackParam) const
102 : {
103 : //
104 : /// Returns uncertainties on extrapolated position.
105 : /// Takes into account Branson plane corrections in the iron wall.
106 : //
107 :
108 32 : const Float_t kZFilterOut = AliMUONConstants::MuonFilterZEnd();
109 16 : const Float_t kFilterThickness = kZFilterOut-AliMUONConstants::MuonFilterZBeg(); // cm
110 :
111 16 : AliMUONTrackExtrap::ExtrapToZCov(&trackParam, kZFilterOut); // Extrap to muon filter end
112 16 : AliMUONTrackExtrap::AddMCSEffect(&trackParam, kFilterThickness, AliMUONConstants::MuonFilterX0()); // Add MCS effects
113 : return;
114 16 : }
115 :
116 :
117 : //______________________________________________________________________________
118 : void AliMUONTrackHitPattern::ExecuteValidation(const AliMUONVTrackStore& trackStore,
119 : const AliMUONVTriggerTrackStore& triggerTrackStore,
120 : const AliMUONVTriggerStore& triggerStore) const
121 : {
122 : //
123 : /// Main method:
124 : /// Loops on reco tracks, extrapolates them to trigger chambers
125 : /// and searches for matching trigger tracks and digits
126 : //
127 :
128 : // Get the hit pattern for all trigger tracks
129 : AliMUONTriggerTrack* triggerTrack;
130 16 : TIter itTriggerTrack(triggerTrackStore.CreateIterator());
131 66 : while ( ( triggerTrack = static_cast<AliMUONTriggerTrack*>(itTriggerTrack() ) ) ){
132 14 : AliMUONTrackParam trackParam;
133 14 : trackParam.SetNonBendingCoor(triggerTrack->GetX11());
134 14 : trackParam.SetBendingCoor(triggerTrack->GetY11());
135 14 : trackParam.SetZ(triggerTrack->GetZ11());
136 14 : trackParam.SetNonBendingSlope(triggerTrack->GetSlopeX());
137 14 : trackParam.SetBendingSlope(triggerTrack->GetSlopeY());
138 14 : trackParam.SetInverseBendingMomentum(1.);
139 14 : UInt_t pattern = GetHitPattern(trackParam, kTRUE);
140 : // The pattern is a UInt_t, including the information
141 : // on the matched local board,
142 : // but for backward compatibility we fill a UShort_t
143 : // which do not contain such info.
144 : // In the old pattern, we use 15 bits out of 16, so the last one should
145 : // be masked or it will be filled with 1 bit with the local board info.
146 14 : triggerTrack->SetHitsPatternInTrigCh((UShort_t)(pattern & 0x7FFF));
147 70 : AliDebug(1, Form("Hit pattern (MTR): hits 0x%x slat %2i board %3i effFlag %i",
148 : pattern & 0xFF, AliESDMuonTrack::GetSlatOrInfo(pattern),triggerTrack->GetLoTrgNum(), AliESDMuonTrack::GetEffFlag(pattern)));
149 14 : }
150 :
151 : // Match tracker tracks with trigger tracks.
152 16 : TIter itTrack(trackStore.CreateIterator());
153 : AliMUONTrack* track;
154 :
155 8 : const Int_t kFirstTrigCh = AliMUONConstants::NTrackingCh();
156 :
157 72 : while ( ( track = static_cast<AliMUONTrack*>(itTrack()) ) )
158 : {
159 48 : AliMUONTrackParam trackParam(*((AliMUONTrackParam*) (track->GetTrackParamAtCluster()->Last())));
160 :
161 16 : ApplyMCSCorrections(trackParam);
162 16 : AliMUONTrackExtrap::ExtrapToZCov(&trackParam, AliMUONConstants::DefaultChamberZ(kFirstTrigCh)); // extrap to 1st trigger chamber
163 :
164 16 : AliMUONTriggerTrack *matchedTriggerTrack = MatchTriggerTrack(track, trackParam, triggerTrackStore, triggerStore);
165 28 : if ( matchedTriggerTrack ) track->SetHitsPatternInTrigCh(matchedTriggerTrack->GetHitsPatternInTrigCh());
166 :
167 16 : UInt_t pattern = GetHitPattern(trackParam, kFALSE);
168 16 : track->SetHitsPatternInTrigChTrk(pattern);
169 80 : AliDebug(1, Form("Hit pattern (MTK): hits 0x%x slat %2i board %3i effFlag %i",
170 : pattern & 0xFF, AliESDMuonTrack::GetSlatOrInfo(pattern), AliESDMuonTrack::GetCrossedBoard(pattern), AliESDMuonTrack::GetEffFlag(pattern)));
171 16 : }
172 8 : }
173 :
174 :
175 : //______________________________________________________________________________
176 : Bool_t AliMUONTrackHitPattern::FindMatchingPads(const AliMUONTrackParam* trackParam,
177 : TArrayI& matchedDetElemId, TObjArray& pads,
178 : const AliMUONVDigitStore& digitStore,
179 : Bool_t isTriggerTrack) const
180 : {
181 : //
182 : /// Search for matching digits in trigger chamber
183 : //
184 : enum {kBending, kNonBending};
185 :
186 240 : Double_t minMatchDist[2];
187 240 : Int_t padsInCheckArea[2];
188 :
189 240 : AliMUONTrackParam trackParamAtPadZ(*trackParam);
190 :
191 480 : Int_t inputDetElemId = matchedDetElemId[0];
192 :
193 1440 : for(Int_t cath=0; cath<2; cath++){
194 480 : minMatchDist[cath] = 99999.;
195 480 : padsInCheckArea[cath] = 0;
196 : }
197 :
198 240 : Int_t iChamber = AliMpDEManager::GetChamberId(inputDetElemId);
199 240 : Int_t iSlat = inputDetElemId%100;
200 :
201 480 : TIter next(digitStore.CreateTriggerIterator());
202 : AliMUONVDigit* mDigit;
203 :
204 240 : Double_t xPad = 0., yPad = 0., zPad = 0.;
205 : Double_t sigmaX = 0., sigmaY = 0.;
206 :
207 720 : Double_t nSigmas = ( isTriggerTrack ) ? GetRecoParam()->GetStripCutForTrigger() : GetRecoParam()->GetSigmaCutForTrigger();
208 : Bool_t goodForEff = kTRUE;
209 :
210 7136 : while ( ( mDigit = static_cast<AliMUONVDigit*>(next()) ) )
211 : {
212 3208 : Int_t currDetElemId = mDigit->DetElemId();
213 3208 : Int_t currCh = AliMpDEManager::GetChamberId(currDetElemId);
214 5614 : if ( currCh != iChamber ) continue;
215 802 : Int_t currSlat = currDetElemId%100;
216 802 : Int_t slatDiff = TMath::Abs(currSlat-iSlat);
217 1006 : if ( slatDiff>1 && slatDiff<17 ) continue; // Check neighbour slats
218 :
219 598 : Int_t cathode = mDigit->Cathode();
220 598 : Int_t ix = mDigit->PadX();
221 598 : Int_t iy = mDigit->PadY();
222 1196 : const AliMpVSegmentation* seg = AliMpSegmentation::Instance()
223 598 : ->GetMpSegmentation(currDetElemId,AliMp::GetCathodType(cathode));
224 598 : AliMpPad pad = seg->PadByIndices(ix,iy,kTRUE);
225 :
226 : // Get local pad coordinates
227 598 : Double_t xPadLocal = pad.GetPositionX();
228 598 : Double_t yPadLocal = pad.GetPositionY();
229 598 : Double_t dpx = pad.GetDimensionX();
230 598 : Double_t dpy = pad.GetDimensionY();
231 598 : Double_t xWidth = 2. * dpx;
232 598 : Double_t yWidth = 2. * dpy;
233 :
234 : // Get global pad coordinates
235 598 : fkTransformer.Local2Global(currDetElemId, xPadLocal, yPadLocal, 0., xPad, yPad, zPad);
236 :
237 : // Get track parameters at pad z
238 908 : if ( trackParamAtPadZ.CovariancesExist() ) AliMUONTrackExtrap::LinearExtrapToZCov(&trackParamAtPadZ, zPad);
239 288 : else AliMUONTrackExtrap::LinearExtrapToZ(&trackParamAtPadZ, zPad);
240 :
241 1196 : Double_t deltaX = TMath::Abs(xPad-trackParamAtPadZ.GetNonBendingCoor()) - dpx;
242 1196 : Double_t deltaY = TMath::Abs(yPad-trackParamAtPadZ.GetBendingCoor()) - dpy;
243 :
244 :
245 : // Get sigmas
246 598 : if ( isTriggerTrack ) {
247 288 : Double_t checkWidth = TMath::Min(xWidth, yWidth);
248 288 : Double_t maxCheckArea = GetRecoParam()->GetMaxStripAreaForTrigger() * checkWidth;
249 288 : Double_t sigma = TMath::Max(checkWidth, 2.);
250 : sigmaX = sigma; // in cm
251 : sigmaY = sigma; // in cm
252 492 : if ( deltaX <= maxCheckArea && deltaY <= maxCheckArea ) {
253 166 : padsInCheckArea[cathode]++;
254 166 : if ( padsInCheckArea[cathode] > 2 ) {
255 : goodForEff = kFALSE;
256 50 : AliDebug(2, Form("padsInCheckArea[%i] = %i\n",cathode,padsInCheckArea[cathode]));
257 : }
258 : }
259 288 : }
260 : else {
261 310 : const TMatrixD& kCovParam = trackParamAtPadZ.GetCovariances();
262 620 : sigmaX = TMath::Sqrt(kCovParam(0,0)); // in cm
263 620 : sigmaY = TMath::Sqrt(kCovParam(2,2)); // in cm
264 : }
265 :
266 2990 : AliDebug(2, Form("\nDetElemId %i Cath %i Dim = (%.2f,%.2f) Pad (%i,%i) = (%.2f,%.2f) Track = (%.2f,%.2f) Delta (%.2f,%.2f) Sigma (%.2f,%.2f) p %g\n",
267 : currDetElemId,cathode,dpx,dpy,ix,iy,xPad,yPad,trackParamAtPadZ.GetNonBendingCoor(),trackParamAtPadZ.GetBendingCoor(),deltaX,deltaY,sigmaX,sigmaY,trackParamAtPadZ.P()));
268 : //if ( deltaX <= maxCheckArea && deltaY <= maxCheckArea ) padsInCheckArea[cathode]++;
269 1288 : if ( deltaX > nSigmas * sigmaX || deltaY > nSigmas * sigmaY ) continue;
270 342 : Double_t matchDist = TMath::Max(deltaX, deltaY);
271 391 : if ( matchDist > minMatchDist[cathode] ) continue;
272 745 : if ( pads.At(cathode) ) delete pads.RemoveAt(cathode);
273 586 : pads.AddAt((AliMpPad*)pad.Clone(),cathode);
274 293 : minMatchDist[cathode] = matchDist;
275 586 : matchedDetElemId[cathode] = currDetElemId; // Set the input detection element id to the matched one
276 891 : } // loop on digits
277 :
278 : // // If track matches many pads, it is not good for effciency determination.
279 : // // However we still want to calculate the hit pattern.
280 : // for ( Int_t cath=0; cath<2; cath++ ){
281 : // if ( padsInCheckArea[cath] > 2 ) {
282 : // AliDebug(2, Form("padsInCheckArea[%i] = %i\n",cath,padsInCheckArea[cath]));
283 : // return kFALSE;
284 : // }
285 : // }
286 :
287 240 : return goodForEff;
288 240 : }
289 :
290 :
291 : //_____________________________________________________________________________
292 : UInt_t AliMUONTrackHitPattern::GetHitPattern(const AliMUONTrackParam& trackParam, Bool_t isTriggerTrack) const
293 : {
294 : //
295 : /// Searches for matching digits around the track.
296 : //
297 :
298 30 : AliCodeTimerAuto("",0);
299 :
300 30 : TArrayI digitPerTrack(2);
301 30 : digitPerTrack.Reset();
302 :
303 30 : UInt_t pattern = 0;
304 :
305 150 : TObjArray trackParamList, matchedPads(2), maskedPads(2), padsFromPos(4), validPads(2);
306 120 : trackParamList.SetOwner(); matchedPads.SetOwner(); maskedPads.SetOwner(); padsFromPos.SetOwner();
307 :
308 : Int_t firstSlat = -1, firstBoard = -1;
309 : AliESDMuonTrack::EAliTriggerChPatternFlag goodForEff = AliESDMuonTrack::kBoardEff;
310 120 : TArrayI matchedDetElemId(2), maskedDetElemId(2), detElemIdFromTrack(2), validDetElemId(2);
311 :
312 450 : for(Int_t ich=0; ich<AliMUONConstants::NTriggerCh(); ich++) { // chamber loop
313 :
314 600 : trackParamList.Delete(); matchedPads.Delete(); maskedPads.Delete(); padsFromPos.Delete(); validPads.Clear();
315 :
316 120 : Int_t nFound = GetTrackParamAtChamber(trackParam, 11+ich, trackParamList, detElemIdFromTrack, padsFromPos);
317 120 : if ( nFound == 0 ) {
318 : // track is rejected since the extrapolated track
319 : // does not match a slat (border effects)
320 0 : AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackOutsideGeometry);
321 : goodForEff = AliESDMuonTrack::kNoEff;
322 0 : AliDebug(2, "Warning: trigger track outside trigger chamber\n");
323 0 : continue;
324 : }
325 :
326 : // Search for masked pads
327 240 : maskedDetElemId.Reset(detElemIdFromTrack[0]);
328 240 : FindMatchingPads((AliMUONTrackParam*)trackParamList.At(0), maskedDetElemId, maskedPads, *(fkTriggerUtilities->GetMaskedDigits()), isTriggerTrack);
329 240 : if ( maskedPads.GetEntries() > 0 ) {
330 0 : AliESDMuonTrack::AddEffInfo(pattern,AliESDMuonTrack::kTrackMatchesMasks); // pad is masked
331 : goodForEff = AliESDMuonTrack::kNoEff;
332 0 : for ( Int_t icath=0; icath<2; icath++ ) {
333 0 : AliMpPad* currPad = (AliMpPad*)maskedPads.UncheckedAt(icath);
334 0 : if ( ! currPad ) continue;
335 0 : AliDebug(2,Form("DetElemId %i cath %i board %i strip %i is masked: effFlag 0", matchedDetElemId[icath], icath, currPad->GetLocalBoardId(0), currPad->GetLocalBoardChannel(0)));
336 0 : }
337 : // continue;
338 : // We want to calculate the hit pattern in any case, so we do not "continue"
339 : // However we set the flag in such a way not to use the track for efficiency calculations
340 0 : }
341 :
342 : // If no masked pads matched, search for active pads
343 240 : matchedDetElemId.Reset(detElemIdFromTrack[0]);
344 360 : if ( ! FindMatchingPads((AliMUONTrackParam*)trackParamList.At(0), matchedDetElemId, matchedPads, fkDigitStore, isTriggerTrack) ) {
345 : // if ! FindPadMatchingTrig => too many digits matching pad =>
346 : // => Event not clear => Do not use for efficiency calculation
347 2 : AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackMatchesManyPads);
348 : goodForEff = AliESDMuonTrack::kNoEff;
349 10 : AliDebug(2, Form("Warning: track in %i matches many pads. Rejected!\n", matchedDetElemId[0]));
350 : }
351 :
352 : Int_t nMatched = 0;
353 :
354 240 : Int_t mostProbDEmatched = detElemIdFromTrack[0];
355 720 : for ( Int_t icath=0; icath<2; icath++ ) {
356 240 : if ( matchedPads.UncheckedAt(icath) ) {
357 240 : nMatched++;
358 : // Fill pattern anyway
359 240 : AliESDMuonTrack::SetFiredChamber(pattern, icath, ich);
360 480 : digitPerTrack[icath]++;
361 480 : mostProbDEmatched = matchedDetElemId[icath];
362 240 : }
363 : }
364 : Int_t mostProbDEindex = 0;
365 240 : for ( Int_t ifound=0; ifound<nFound; ifound++ ) {
366 240 : if ( detElemIdFromTrack[ifound] == mostProbDEmatched ) {
367 : mostProbDEindex = ifound;
368 120 : break;
369 : }
370 : }
371 :
372 124 : if ( goodForEff == AliESDMuonTrack::kNoEff ) continue;
373 :
374 696 : for ( Int_t icath=0; icath<2; icath++ ) {
375 232 : if ( matchedPads.UncheckedAt(icath) ) {
376 232 : validPads.AddAt(matchedPads.UncheckedAt(icath),icath);
377 696 : validDetElemId[icath] = matchedDetElemId[icath];
378 232 : }
379 : else {
380 0 : validPads.AddAt(padsFromPos.UncheckedAt(2*mostProbDEindex + icath),icath);
381 0 : validDetElemId[icath] = detElemIdFromTrack[mostProbDEindex];
382 : }
383 : }
384 :
385 116 : Int_t currSlat = mostProbDEmatched%100;
386 146 : if ( firstSlat < 0 ) firstSlat = currSlat;
387 :
388 464 : if ( currSlat != firstSlat || validDetElemId[0] != validDetElemId[1] ) {
389 : goodForEff = AliESDMuonTrack::kChEff;
390 : firstSlat = AliESDMuonTrack::kCrossDifferentSlats;
391 0 : }
392 :
393 176 : if ( firstBoard < 0 ) firstBoard = ((AliMpPad*)validPads.UncheckedAt(0))->GetLocalBoardId(0);
394 :
395 696 : for ( Int_t icath=0; icath<2; icath++ ){
396 :
397 232 : if ( goodForEff == AliESDMuonTrack::kBoardEff) {
398 : Bool_t atLeastOneLoc = kFALSE;
399 182 : AliMpPad* currPad = (AliMpPad*)validPads.UncheckedAt(icath);
400 710 : for ( Int_t iloc=0; iloc<currPad->GetNofLocations(); iloc++) {
401 436 : if ( currPad->GetLocalBoardId(iloc) == firstBoard ) {
402 : atLeastOneLoc = kTRUE;
403 168 : break;
404 : }
405 : } // loop on locations
406 196 : if ( ! atLeastOneLoc ) goodForEff = AliESDMuonTrack::kSlatEff;
407 182 : }
408 : } // loop on cathodes
409 : // } // if track good for efficiency
410 116 : } // end chamber loop
411 :
412 32 : if ( goodForEff == AliESDMuonTrack::kNoEff ) return pattern;
413 :
414 168 : for(Int_t cath=0; cath<2; cath++){
415 112 : if(digitPerTrack[cath]<3) {
416 : // track is rejected since the number of associated
417 : // digits found is less than 3.
418 0 : AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackMatchesFewPads);
419 : goodForEff = AliESDMuonTrack::kNoEff;
420 0 : AliDebug(2, Form("Warning: found %i digits for trigger track cathode %i.\nRejecting event\n", digitPerTrack[cath],cath));
421 : }
422 : } // loop on cathodes
423 :
424 28 : if ( goodForEff == AliESDMuonTrack::kNoEff ) return pattern;
425 :
426 28 : AliESDMuonTrack::AddEffInfo(pattern, firstSlat, firstBoard, goodForEff);
427 28 : return pattern;
428 30 : }
429 :
430 :
431 :
432 : //_____________________________________________________________________________
433 : Int_t AliMUONTrackHitPattern::GetTrackParamAtChamber(const AliMUONTrackParam& inputTrackParam, Int_t chamber,
434 : TObjArray& trackParamList, TArrayI& foundDetElemId,
435 : TObjArray& padsFromPos) const
436 : {
437 : //
438 : /// Return the extrapolated the track parameter at the given chamber
439 : /// and returns the matching DetElemId
440 : /// CAVEAT: at the border the result is not univoque
441 : //
442 :
443 : Int_t nFound = 0;
444 240 : foundDetElemId[0] = foundDetElemId[1] = 0;
445 120 : AliMUONTrackParam trackParamCopy(inputTrackParam);
446 360 : TVector3 globalPoint1(trackParamCopy.GetNonBendingCoor(), trackParamCopy.GetBendingCoor(), trackParamCopy.GetZ());
447 120 : AliMUONTrackExtrap::LinearExtrapToZ(&trackParamCopy, trackParamCopy.GetZ() + 20.);
448 360 : TVector3 globalPoint2(trackParamCopy.GetNonBendingCoor(), trackParamCopy.GetBendingCoor(), trackParamCopy.GetZ());
449 120 : TVector3 localCoor;
450 :
451 : // AliMpArea pointArea(x, y, 2.*AliMpConstants::LengthTolerance(), 2.*AliMpConstants::LengthTolerance());
452 120 : AliMpDEIterator it;
453 120 : Double_t xGlobal, yGlobal, zGlobal;
454 3438 : for ( it.First(chamber-1); ! it.IsDone(); it.Next() ){
455 1136 : Int_t detElemId = it.CurrentDEId();
456 1136 : PosInDetElemIdLocal(localCoor, globalPoint1, globalPoint2, detElemId);
457 1136 : fkTransformer.Local2Global(detElemId, localCoor.X(), localCoor.Y(), localCoor.Z(), xGlobal, yGlobal, zGlobal);
458 1136 : AliMpArea pointArea(xGlobal, yGlobal, 2.*AliMpConstants::LengthTolerance(), 2.*AliMpConstants::LengthTolerance());
459 1136 : AliMpArea* deArea = fkTransformer.GetDEArea(detElemId);
460 2272 : if ( deArea->Contains(pointArea) ) {
461 : // Check if track matches valid pads
462 : // (this is not trivial for cut RPC)
463 : Int_t validPads = 0;
464 720 : for ( Int_t icath=0; icath<2; icath++ ) {
465 : const AliMpVSegmentation* seg =
466 480 : AliMpSegmentation::Instance()
467 240 : ->GetMpSegmentation(detElemId,AliMp::GetCathodType(icath));
468 240 : AliMpPad pad = seg->PadByPosition(localCoor.X(),localCoor.Y(),kFALSE);
469 240 : if ( pad.IsValid() ) {
470 480 : padsFromPos.AddAt(pad.Clone(), 2*nFound + icath);
471 240 : validPads++;
472 240 : }
473 240 : }
474 120 : if ( validPads < 2 ) continue;
475 240 : AliMUONTrackParam* extrapTrackParam = new AliMUONTrackParam(inputTrackParam);
476 184 : if ( extrapTrackParam->CovariancesExist() ) AliMUONTrackExtrap::LinearExtrapToZCov(extrapTrackParam, zGlobal);
477 56 : else AliMUONTrackExtrap::LinearExtrapToZ(extrapTrackParam, zGlobal);
478 120 : trackParamList.AddAt(extrapTrackParam,nFound);
479 240 : foundDetElemId[nFound] = detElemId;
480 120 : nFound++;
481 120 : if ( nFound == 2 ) break;
482 120 : }
483 1126 : else if ( nFound > 0 ) break;
484 2162 : } // loop on detElemId
485 :
486 : return nFound;
487 120 : }
488 :
489 :
490 : //______________________________________________________________________________
491 : AliMUONTriggerTrack *
492 : AliMUONTrackHitPattern::MatchTriggerTrack(AliMUONTrack* track,
493 : AliMUONTrackParam& trackParam,
494 : const AliMUONVTriggerTrackStore& triggerTrackStore,
495 : const AliMUONVTriggerStore& triggerStore) const
496 : {
497 : //
498 : /// Match track with trigger track
499 : //
500 :
501 : Int_t matchTrigger = 0;
502 : Int_t loTrgNum(-1);
503 32 : TMatrixD paramDiff(3,1);
504 : Double_t chi2;
505 : Double_t chi2MatchTrigger = 0., minChi2MatchTrigger = 999.;
506 : Int_t doubleMatch = -1; // Check if track matches 2 trigger tracks
507 : Double_t doubleChi2 = -1.;
508 : AliMUONTriggerTrack* doubleTriggerTrack = 0x0;
509 : AliMUONTriggerTrack* matchedTriggerTrack = 0x0;
510 :
511 :
512 : // Covariance matrix 3x3 (X,Y,slopeY) for trigger tracks
513 16 : TMatrixD trackCov(3,3);
514 :
515 : AliMUONTriggerTrack *triggerTrack;
516 32 : TIter itTriggerTrack(triggerTrackStore.CreateIterator());
517 116 : while ( ( triggerTrack = static_cast<AliMUONTriggerTrack*>(itTriggerTrack() ) ) )
518 : {
519 28 : AliMUONTrackExtrap::LinearExtrapToZCov(&trackParam, triggerTrack->GetZ11());
520 28 : const TMatrixD& kParamCov = trackParam.GetCovariances();
521 :
522 28 : Double_t xTrack = trackParam.GetNonBendingCoor();
523 28 : Double_t yTrack = trackParam.GetBendingCoor();
524 28 : Double_t ySlopeTrack = trackParam.GetBendingSlope();
525 :
526 56 : paramDiff(0,0) = triggerTrack->GetX11() - xTrack;
527 56 : paramDiff(1,0) = triggerTrack->GetY11() - yTrack;
528 56 : paramDiff(2,0) = triggerTrack->GetSlopeY() - ySlopeTrack;
529 :
530 : // Covariance matrix 3x3 (X,Y,slopeY) for tracker tracks
531 28 : trackCov.Zero();
532 84 : trackCov(0,0) = kParamCov(0,0);
533 84 : trackCov(1,1) = kParamCov(2,2);
534 84 : trackCov(2,2) = kParamCov(3,3);
535 84 : trackCov(1,2) = kParamCov(2,3);
536 84 : trackCov(2,1) = kParamCov(3,2);
537 :
538 : // Covariance matrix 3x3 (X,Y,slopeY) for trigger tracks
539 56 : TMatrixD trigCov(triggerTrack->GetCovariances());
540 :
541 28 : TMatrixD sumCov(trackCov,TMatrixD::kPlus,trigCov);
542 56 : if (sumCov.Determinant() != 0) {
543 28 : sumCov.Invert();
544 :
545 28 : TMatrixD tmp(sumCov,TMatrixD::kMult,paramDiff);
546 28 : TMatrixD chi2M(paramDiff,TMatrixD::kTransposeMult,tmp);
547 56 : chi2 = chi2M(0,0);
548 28 : } else {
549 0 : AliWarning(" Determinant = 0");
550 : Double_t sigma2 = 0.;
551 : chi2 = 0.;
552 0 : for (Int_t iVar = 0; iVar < 3; iVar++) {
553 0 : sigma2 = trackCov(iVar,iVar) + trigCov(iVar,iVar);
554 0 : chi2 += paramDiff(iVar,0) * paramDiff(iVar,0) / sigma2;
555 : }
556 : }
557 :
558 28 : chi2 /= 3.; // Normalized Chi2: 3 degrees of freedom (X,Y,slopeY)
559 28 : if (chi2 < GetRecoParam()->GetMaxNormChi2MatchTrigger())
560 : {
561 14 : Bool_t isDoubleTrack = (TMath::Abs(chi2 - minChi2MatchTrigger)<1.);
562 26 : if (chi2 < minChi2MatchTrigger && chi2 < GetRecoParam()->GetMaxNormChi2MatchTrigger())
563 : {
564 12 : if(isDoubleTrack)
565 : {
566 : doubleMatch = loTrgNum;
567 : doubleChi2 = chi2MatchTrigger;
568 : doubleTriggerTrack = matchedTriggerTrack;
569 0 : }
570 : minChi2MatchTrigger = chi2;
571 : chi2MatchTrigger = chi2;
572 12 : loTrgNum = triggerTrack->GetLoTrgNum();
573 : matchedTriggerTrack = triggerTrack;
574 12 : AliMUONLocalTrigger* locTrg = triggerStore.FindLocal(loTrgNum);
575 : matchTrigger = 1;
576 24 : if(locTrg->LoLpt()>0) matchTrigger = 2;
577 24 : if(locTrg->LoHpt()>0) matchTrigger = 3;
578 12 : }
579 2 : else if(isDoubleTrack)
580 : {
581 0 : doubleMatch = triggerTrack->GetLoTrgNum();
582 : doubleChi2 = chi2;
583 0 : }
584 14 : }
585 28 : }
586 16 : if(doubleMatch>=0)
587 : { // If two trigger tracks match, select the one passing more trigger cuts
588 0 : AliDebug(1, Form("Two candidates found: %i and %i",loTrgNum,doubleMatch));
589 0 : AliMUONLocalTrigger* locTrg1 = triggerStore.FindLocal(doubleMatch);
590 0 : if((locTrg1->LoLpt()>0 && matchTrigger<2) || (locTrg1->LoHpt() && matchTrigger<3))
591 : {
592 0 : if(locTrg1->LoHpt()>0) matchTrigger=3;
593 : else matchTrigger = 2;
594 : loTrgNum = doubleMatch;
595 : chi2MatchTrigger = doubleChi2;
596 : matchedTriggerTrack = doubleTriggerTrack;
597 0 : }
598 0 : }
599 :
600 16 : track->SetMatchTrigger(matchTrigger);
601 16 : track->SetChi2MatchTrigger(chi2MatchTrigger);
602 :
603 16 : AliMUONLocalTrigger* locTrg = static_cast<AliMUONLocalTrigger*>(triggerStore.FindLocal(loTrgNum));
604 :
605 16 : if (locTrg)
606 : {
607 24 : track->SetLocalTrigger(locTrg->LoCircuit(),
608 12 : locTrg->LoStripX(),
609 12 : locTrg->LoStripY(),
610 12 : locTrg->GetDeviation(),
611 12 : locTrg->LoLpt(),
612 12 : locTrg->LoHpt(),
613 12 : locTrg->GetTriggerWithoutChamber());
614 : }
615 :
616 : return matchedTriggerTrack;
617 16 : }
618 :
619 :
620 : //_____________________________________________________________________________
621 : Bool_t AliMUONTrackHitPattern::PosInDetElemIdLocal(TVector3& localCoor, const TVector3& globalPoint1,
622 : const TVector3& globalPoint2, Int_t detElemId) const
623 : {
624 : /// Given two points belonging to a line (global coordinates)
625 : /// it returns the intersection point with the detElemId (local coordinates)
626 :
627 2272 : Double_t xloc, yloc, zloc;
628 1136 : fkTransformer.Global2Local(detElemId, globalPoint1.X(), globalPoint1.Y(), globalPoint1.Z(), xloc, yloc, zloc);
629 1136 : TVector3 localPoint1(xloc, yloc, zloc);
630 1136 : fkTransformer.Global2Local(detElemId, globalPoint2.X(), globalPoint2.Y(), globalPoint2.Z(), xloc, yloc, zloc);
631 1136 : TVector3 localPoint2(xloc, yloc, zloc);
632 4544 : localCoor = localPoint1 - ( localPoint1.Z() / ( localPoint2.Z() - localPoint1.Z() ) ) * ( localPoint2 - localPoint1 );
633 :
634 : return kTRUE;
635 1136 : }
636 :
637 :
638 : // THE FOLLOWING METHODS ARE OBSOLETE
639 :
640 : //______________________________________________________________________________
641 : UInt_t AliMUONTrackHitPattern::GetHitPattern(const AliMUONTriggerTrack* matchedTriggerTrack) const
642 : {
643 : //
644 : /// Get hit pattern on trigger chambers for the current trigger track
645 : //
646 0 : UInt_t pattern = 0;
647 0 : PerformTrigTrackMatch(pattern, matchedTriggerTrack);
648 0 : return pattern;
649 0 : }
650 :
651 :
652 : //______________________________________________________________________________
653 : UInt_t AliMUONTrackHitPattern::GetHitPattern(AliMUONTrackParam* trackParam) const
654 : {
655 : //
656 : /// Get hit pattern on trigger chambers for the current tracker track
657 : //
658 0 : UInt_t pattern = 0;
659 0 : Bool_t isMatch[2];
660 0 : const Int_t kNTrackingCh = AliMUONConstants::NTrackingCh();
661 :
662 0 : for(Int_t ch=0; ch<4; ++ch)
663 : {
664 0 : Int_t iChamber = kNTrackingCh+ch;
665 0 : AliMUONTrackExtrap::ExtrapToZCov(trackParam, AliMUONConstants::DefaultChamberZ(iChamber));
666 0 : FindPadMatchingTrack(*trackParam, isMatch, iChamber);
667 0 : for(Int_t cath=0; cath<2; ++cath)
668 : {
669 0 : if(isMatch[cath]) AliESDMuonTrack::SetFiredChamber(pattern, cath, ch);
670 : }
671 : }
672 :
673 : // pattern obtained by propagation of tracker track
674 : // when it does not match the trigger.
675 0 : AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackerTrackPattern);
676 :
677 0 : return pattern;
678 0 : }
679 :
680 :
681 : //______________________________________________________________________________
682 : void
683 : AliMUONTrackHitPattern::FindPadMatchingTrack(const AliMUONTrackParam& trackParam,
684 : Bool_t isMatch[2], Int_t iChamber) const
685 : {
686 : //
687 : /// Given the tracker track position, searches for matching digits.
688 : //
689 :
690 0 : Float_t minMatchDist[2];
691 :
692 0 : for(Int_t cath=0; cath<2; ++cath)
693 : {
694 0 : isMatch[cath]=kFALSE;
695 0 : minMatchDist[cath]=fkMaxDistance/10.;
696 : }
697 :
698 0 : TIter next(fkDigitStore.CreateTriggerIterator());
699 : AliMUONVDigit* mDigit;
700 :
701 0 : while ( ( mDigit = static_cast<AliMUONVDigit*>(next()) ) )
702 : {
703 0 : Int_t currDetElemId = mDigit->DetElemId();
704 0 : Int_t currCh = AliMpDEManager::GetChamberId(currDetElemId);
705 0 : if(currCh!=iChamber) continue;
706 0 : Int_t cathode = mDigit->Cathode();
707 0 : Int_t ix = mDigit->PadX();
708 0 : Int_t iy = mDigit->PadY();
709 0 : Float_t xpad, ypad, zpad;
710 0 : const AliMpVSegmentation* seg = AliMpSegmentation::Instance()
711 0 : ->GetMpSegmentation(currDetElemId,AliMp::GetCathodType(cathode));
712 :
713 0 : AliMpPad pad = seg->PadByIndices(ix,iy,kTRUE);
714 0 : Float_t xlocal1 = pad.GetPositionX();
715 0 : Float_t ylocal1 = pad.GetPositionY();
716 0 : Float_t dpx = pad.GetDimensionX();
717 0 : Float_t dpy = pad.GetDimensionY();
718 :
719 0 : fkTransformer.Local2Global(currDetElemId, xlocal1, ylocal1, 0, xpad, ypad, zpad);
720 0 : Float_t matchDist = MinDistanceFromPad(xpad, ypad, zpad, dpx, dpy, trackParam);
721 0 : if(matchDist>minMatchDist[cathode])continue;
722 0 : isMatch[cathode] = kTRUE;
723 0 : if(isMatch[0] && isMatch[1]) break;
724 0 : minMatchDist[cathode] = matchDist;
725 0 : }
726 0 : }
727 :
728 :
729 : //______________________________________________________________________________
730 : Float_t
731 : AliMUONTrackHitPattern::MinDistanceFromPad(Float_t xPad, Float_t yPad, Float_t zPad,
732 : Float_t dpx, Float_t dpy,
733 : const AliMUONTrackParam& trackParam) const
734 : {
735 : //
736 : /// Decides if the digit belongs to the tracker track.
737 : //
738 :
739 0 : AliMUONTrackParam trackParamAtPadZ(trackParam);
740 0 : AliMUONTrackExtrap::LinearExtrapToZCov(&trackParamAtPadZ, zPad);
741 :
742 0 : Float_t xTrackAtPad = trackParamAtPadZ.GetNonBendingCoor();
743 0 : Float_t yTrackAtPad = trackParamAtPadZ.GetBendingCoor();
744 :
745 0 : const Float_t kNSigma = GetRecoParam()->GetSigmaCutForTrigger();
746 :
747 0 : const TMatrixD& kCovParam = trackParamAtPadZ.GetCovariances();
748 :
749 0 : Float_t sigmaX = TMath::Sqrt(kCovParam(0,0));
750 0 : Float_t sigmaY = TMath::Sqrt(kCovParam(2,2));
751 :
752 0 : Float_t maxDistX = kNSigma * sigmaX; // in cm
753 0 : Float_t maxDistY = kNSigma * sigmaY; // in cm
754 :
755 0 : Float_t deltaX = TMath::Abs(xPad-xTrackAtPad)-dpx;
756 0 : Float_t deltaY = TMath::Abs(yPad-yTrackAtPad)-dpy;
757 :
758 0 : Float_t matchDist = fkMaxDistance;
759 0 : if(deltaX<=maxDistX && deltaY<=maxDistY) matchDist = TMath::Max(deltaX, deltaY);
760 :
761 : return matchDist;
762 0 : }
763 :
764 :
765 : //_____________________________________________________________________________
766 : Bool_t AliMUONTrackHitPattern::FindPadMatchingTrig(const TVector3& vec11, const TVector3& vec21,
767 : Int_t matchedDetElemId[2], TObjArray& pads) const
768 : {
769 : //
770 : /// Check slat and board number of digit matching trigger track
771 : //
772 :
773 : enum {kBending, kNonBending};
774 :
775 0 : Float_t minMatchDist[2];
776 0 : Int_t padsInCheckArea[2];
777 :
778 0 : Int_t inputDetElemId = matchedDetElemId[0];
779 :
780 0 : for(Int_t cath=0; cath<2; cath++){
781 0 : minMatchDist[cath] = fkMaxDistance/10.;
782 0 : padsInCheckArea[cath] = 0;
783 : }
784 :
785 0 : Int_t iChamber = AliMpDEManager::GetChamberId(inputDetElemId);
786 0 : Int_t iSlat = inputDetElemId%100;
787 :
788 0 : TIter next(fkDigitStore.CreateTriggerIterator());
789 : AliMUONVDigit* mDigit;
790 0 : TVector3 localExtrap;
791 :
792 : Int_t previousDetElemId = -1;
793 :
794 0 : while ( ( mDigit = static_cast<AliMUONVDigit*>(next()) ) )
795 : {
796 0 : Int_t currDetElemId = mDigit->DetElemId();
797 0 : Int_t currCh = AliMpDEManager::GetChamberId(currDetElemId);
798 0 : if ( currCh != iChamber ) continue;
799 0 : Int_t currSlat = currDetElemId%100;
800 0 : Int_t slatDiff = TMath::Abs(currSlat-iSlat);
801 0 : if ( slatDiff>1 && slatDiff<17 ) continue; // Check neighbour slats
802 0 : Int_t cathode = mDigit->Cathode();
803 0 : Int_t ix = mDigit->PadX();
804 0 : Int_t iy = mDigit->PadY();
805 0 : const AliMpVSegmentation* seg = AliMpSegmentation::Instance()
806 0 : ->GetMpSegmentation(currDetElemId,AliMp::GetCathodType(cathode));
807 :
808 0 : AliMpPad pad = seg->PadByIndices(ix,iy,kTRUE);
809 :
810 0 : if ( currDetElemId != previousDetElemId ) {
811 0 : PosInDetElemIdLocal(localExtrap, vec11, vec21, currDetElemId);
812 : previousDetElemId = currDetElemId;
813 0 : }
814 :
815 0 : AliDebug(11, Form("\nDetElemId = %i Cathode = %i Pad = (%i,%i) = (%.2f,%.2f) Dim = (%.2f,%.2f) Track = (%.2f,%.2f)\n",
816 : currDetElemId,cathode,ix,iy,pad.GetPositionX(),pad.GetPositionY(),pad.GetDimensionX(),pad.GetDimensionY(),localExtrap.X(),localExtrap.Y()));
817 0 : Float_t matchDist = PadMatchTrack(pad, localExtrap);
818 0 : if ( matchDist < fkMaxDistance/2. ) padsInCheckArea[cathode]++;
819 0 : if ( matchDist > minMatchDist[cathode] ) continue;
820 0 : if ( pads.At(cathode) ) delete pads.RemoveAt(cathode);
821 0 : pads.AddAt((AliMpPad*)pad.Clone(),cathode);
822 0 : minMatchDist[cathode] = matchDist;
823 0 : matchedDetElemId[cathode] = currDetElemId; // Set the input detection element id to the matched one
824 0 : } // loop on digits
825 :
826 : // If track matches many pads, it is not good for effciency determination.
827 : // However we still want to calculate the hit pattern.
828 0 : for ( Int_t cath=0; cath<2; cath++ ){
829 0 : if ( padsInCheckArea[cath] > 2 ) {
830 0 : AliDebug(10, Form("padsInCheckArea[%i] = %i\n",cath,padsInCheckArea[cath]));
831 0 : return kFALSE;
832 : }
833 : }
834 :
835 0 : return kTRUE;
836 0 : }
837 :
838 : //_____________________________________________________________________________
839 : Float_t AliMUONTrackHitPattern::PadMatchTrack(const AliMpPad& pad, const TVector3& trackPosAtPad) const
840 : {
841 : //
842 : /// Decides if the digit belongs to the trigger track.
843 : //
844 :
845 0 : Float_t xPad = pad.GetPositionX();
846 0 : Float_t yPad = pad.GetPositionY();
847 0 : Float_t dpx = pad.GetDimensionX();
848 0 : Float_t dpy = pad.GetDimensionY();
849 :
850 :
851 0 : Float_t maxDist = GetRecoParam()->GetStripCutForTrigger() * 2. * TMath::Min(dpx,dpy); // cm
852 0 : if ( maxDist<2. ) maxDist = 2.;
853 0 : Float_t maxDistCheckArea = GetRecoParam()->GetMaxStripAreaForTrigger() * 2. * TMath::Min(dpx,dpy); // cm
854 :
855 0 : Float_t matchDist = fkMaxDistance;
856 :
857 0 : Float_t deltaX = TMath::Abs(xPad-trackPosAtPad.X())-dpx;
858 0 : Float_t deltaY = TMath::Abs(yPad-trackPosAtPad.Y())-dpy;
859 : Float_t maxDistX = maxDist;
860 : Float_t maxDistY = maxDist;
861 :
862 0 : if(deltaX<=maxDistX && deltaY<=maxDistY) matchDist = TMath::Max(deltaX, deltaY);
863 0 : else if(deltaX<=maxDistCheckArea && deltaY<=maxDistCheckArea) matchDist = fkMaxDistance/5.;
864 0 : return matchDist;
865 : }
866 :
867 :
868 : //_____________________________________________________________________________
869 : Int_t AliMUONTrackHitPattern::DetElemIdFromPos(Float_t x, Float_t y,
870 : Int_t chamber, Int_t foundDetElemId[2]) const
871 : {
872 : //
873 : /// Given the (x,y) position in the chamber,
874 : /// it returns the corresponding slats
875 : /// Caveat: at the border the result is not univoque
876 : //
877 :
878 : Int_t nFound = 0;
879 :
880 0 : foundDetElemId[0] = foundDetElemId[1] = 0;
881 0 : AliMpArea pointArea(x, y, 2.*AliMpConstants::LengthTolerance(), 2.*AliMpConstants::LengthTolerance());
882 0 : AliMpDEIterator it;
883 0 : for ( it.First(chamber-1); ! it.IsDone(); it.Next() ){
884 0 : Int_t detElemId = it.CurrentDEId();
885 0 : AliMpArea* deArea = fkTransformer.GetDEArea(detElemId);
886 :
887 0 : if ( deArea->Contains(pointArea) ) {
888 0 : foundDetElemId[nFound++] = detElemId;
889 0 : if ( nFound == 2 ) break;
890 : }
891 0 : else if ( nFound > 0 ) break;
892 0 : } // loop on detElemId
893 :
894 : return nFound;
895 0 : }
896 :
897 :
898 :
899 : //_____________________________________________________________________________
900 : Bool_t AliMUONTrackHitPattern::PadsFromPos(const TVector3& vec11, const TVector3& vec21,
901 : Int_t detElemId, TObjArray& pads) const
902 : {
903 : //
904 : /// Given the (x,y) position in the chamber,
905 : /// it returns the corresponding local board
906 : //
907 :
908 0 : pads.Delete();
909 :
910 0 : TVector3 localCoor;
911 0 : PosInDetElemIdLocal(localCoor, vec11, vec21, detElemId);
912 0 : for ( Int_t icath=0; icath<2; icath++ ) {
913 : const AliMpVSegmentation* seg =
914 0 : AliMpSegmentation::Instance()
915 0 : ->GetMpSegmentation(detElemId,AliMp::GetCathodType(icath));
916 0 : AliMpPad pad = seg->PadByPosition(localCoor.X(),localCoor.Y(),kFALSE);
917 0 : if ( pad.IsValid() ) {
918 0 : pads.AddAt(pad.Clone(), icath);
919 : }
920 0 : }
921 :
922 0 : return pads.GetEntries();
923 0 : }
924 :
925 :
926 : //_____________________________________________________________________________
927 : Bool_t AliMUONTrackHitPattern::IsCloseToAccEdge(TObjArray& pads, Int_t detElemId, Float_t coor[2]) const
928 : {
929 0 : AliMpArea* deArea = fkTransformer.GetDEArea(detElemId);
930 0 : Float_t dpx = ((AliMpPad*)pads.At(1))->GetDimensionX();
931 0 : Float_t dpy = ((AliMpPad*)pads.At(0))->GetDimensionY();
932 0 : Float_t resolution[2] = { static_cast<Float_t>(0.75*dpx), static_cast<Float_t>(0.75*dpy) };
933 0 : Float_t sign[3] = {0., 1., -1.};
934 0 : for ( Int_t ineighx=0; ineighx<3; ineighx++ ) {
935 0 : for ( Int_t ineighy=0; ineighy<3; ineighy++ ) {
936 0 : AliMpArea pointArea(coor[0]+sign[ineighx]*resolution[0],
937 0 : coor[1]+sign[ineighy]*resolution[1],
938 0 : 2.*AliMpConstants::LengthTolerance(),
939 0 : 2.*AliMpConstants::LengthTolerance());
940 0 : if ( ! deArea->Contains(pointArea) ) return kTRUE;
941 0 : } // loop on y neighbours
942 : } // loop on x neighbours
943 0 : return kFALSE;
944 0 : }
945 :
946 :
947 : //_____________________________________________________________________________
948 : Bool_t AliMUONTrackHitPattern::IsMasked(const AliMpPad& pad, Int_t detElemId, Int_t cathode, const TVector3& vec11, const TVector3& vec21) const
949 : {
950 : //
951 : /// Check if pad or its neighbours are masked
952 : //
953 :
954 : Int_t nMasked = 0;
955 :
956 0 : if ( fkTriggerUtilities->IsMasked(pad, detElemId, cathode) ) ++nMasked;
957 :
958 : // Check closest neighbour
959 :
960 0 : TVector3 localCoor;
961 0 : PosInDetElemIdLocal(localCoor, vec11, vec21, detElemId);
962 :
963 0 : Float_t padPos[2] = { static_cast<Float_t>(pad.GetPositionX()), static_cast<Float_t>(pad.GetPositionY())};
964 0 : Float_t padDim[2] = { static_cast<Float_t>(pad.GetDimensionX()), static_cast<Float_t>(pad.GetDimensionY())};
965 0 : Float_t inpactPos[2] = { static_cast<Float_t>(localCoor.X()), static_cast<Float_t>(localCoor.Y())};
966 0 : Float_t sign[2] = {-1., 1.};
967 0 : Int_t icoor = 1-cathode;
968 0 : Int_t addSlatSign[3] = {0,1,-1};
969 0 : Int_t inputCh = AliMpDEManager::GetChamberId(detElemId)+1;
970 0 : Int_t inputSlat = detElemId%100;
971 :
972 0 : Float_t newPos[2];
973 0 : for ( Int_t ineigh=0; ineigh<2; ineigh++ ) {
974 0 : newPos[1-icoor] = inpactPos[1-icoor];
975 0 : newPos[icoor] = inpactPos[icoor] + 1.05 * sign[ineigh] * padDim[icoor];
976 0 : if ( TMath::Abs(newPos[icoor] - padPos[icoor]) < padDim[icoor] ) continue;
977 : const AliMpVSegmentation* seg =
978 0 : AliMpSegmentation::Instance()->GetMpSegmentation(detElemId,AliMp::GetCathodType(cathode));
979 0 : AliMpPad neighPad = seg->PadByPosition(newPos[0],newPos[1],kFALSE);
980 0 : if ( neighPad.IsValid() ) {
981 0 : if ( fkTriggerUtilities->IsMasked(neighPad, detElemId, cathode) ) ++nMasked;
982 : }
983 : else {
984 0 : TVector3 deltaVec(newPos[0]-inpactPos[0],newPos[1]-inpactPos[1],0.);
985 0 : TVector3 transVec11 = vec11+deltaVec;
986 0 : TVector3 transVec21 = vec21+deltaVec;
987 0 : TObjArray padsFromPos;
988 0 : padsFromPos.SetOwner();
989 0 : for ( Int_t iAddSlat=0; iAddSlat<2; iAddSlat++ ) {
990 0 : Int_t currSlat = (inputSlat + addSlatSign[iAddSlat])%18;
991 0 : Int_t currDetElemId = 100 * inputCh + currSlat;
992 0 : PadsFromPos(transVec11,transVec21,currDetElemId,padsFromPos);
993 0 : AliMpPad* currPad = (AliMpPad*)padsFromPos.UncheckedAt(cathode);
994 0 : Bool_t isMasked = ( currPad ) ? fkTriggerUtilities->IsMasked(*currPad, currDetElemId, cathode) : kFALSE;
995 0 : padsFromPos.Delete();
996 0 : if ( isMasked ) ++nMasked;
997 : }
998 0 : } // loop on slats
999 0 : } // loop on neigbours
1000 :
1001 0 : Double_t maskedProb = ((Double_t)nMasked)/3.;
1002 0 : if ( gRandom->Rndm() < maskedProb ) return kTRUE;
1003 :
1004 0 : return kFALSE;
1005 0 : }
1006 :
1007 :
1008 : //_____________________________________________________________________________
1009 : Bool_t AliMUONTrackHitPattern::PerformTrigTrackMatch(UInt_t &pattern,
1010 : const AliMUONTriggerTrack* matchedTrigTrack) const
1011 : {
1012 : //
1013 : /// It searches for matching digits around the trigger track.
1014 : //
1015 :
1016 0 : AliCodeTimerAuto("",0);
1017 :
1018 : enum {kBending, kNonBending};
1019 :
1020 0 : TArrayF zMeanChamber(AliMUONConstants::NTriggerCh());
1021 0 : zMeanChamber[0] = matchedTrigTrack->GetZ11();
1022 0 : zMeanChamber[1] = matchedTrigTrack->GetZ11() + AliMUONConstants::DefaultChamberZ(11) - AliMUONConstants::DefaultChamberZ(10);
1023 0 : zMeanChamber[2] = matchedTrigTrack->GetZ21();
1024 0 : zMeanChamber[3] = matchedTrigTrack->GetZ21() + AliMUONConstants::DefaultChamberZ(13) - AliMUONConstants::DefaultChamberZ(12);
1025 :
1026 0 : TArrayI digitPerTrack(2);
1027 0 : digitPerTrack.Reset();
1028 :
1029 0 : Float_t trackIntersectCh[2];
1030 :
1031 0 : Float_t slopeX = matchedTrigTrack->GetSlopeX();
1032 0 : Float_t slopeY = matchedTrigTrack->GetSlopeY();
1033 :
1034 0 : Float_t z11 = matchedTrigTrack->GetZ11();
1035 0 : Float_t x11 = slopeX * z11;
1036 0 : Float_t y11 = matchedTrigTrack->GetY11();
1037 0 : Float_t z21 = matchedTrigTrack->GetZ21();
1038 0 : Float_t x21 = slopeX * z21;
1039 0 : Float_t y21 = y11 + slopeY * (z21-z11);
1040 0 : TVector3 vec11(x11, y11, z11), vec21(x21, y21, z21);
1041 :
1042 : Int_t firstSlat = -1, firstBoard = -1;
1043 : AliESDMuonTrack::EAliTriggerChPatternFlag goodForEff = AliESDMuonTrack::kBoardEff;
1044 0 : TObjArray matchedPads(2), padsFromPos(2), validPads(2);
1045 0 : matchedPads.SetOwner(); padsFromPos.SetOwner();
1046 0 : Int_t matchedDetElemId[2], detElemIdFromTrack[2];
1047 :
1048 0 : for(Int_t ich=0; ich<AliMUONConstants::NTriggerCh(); ich++) { // chamber loop
1049 :
1050 : // searching track intersection with chambers (first approximation)
1051 0 : Float_t deltaZ = zMeanChamber[ich] - zMeanChamber[0];
1052 0 : trackIntersectCh[0] = zMeanChamber[ich] * slopeX;
1053 0 : trackIntersectCh[1] = y11 + deltaZ * slopeY;
1054 0 : Int_t nFound = DetElemIdFromPos(trackIntersectCh[0], trackIntersectCh[1], 11+ich, detElemIdFromTrack);
1055 0 : if ( nFound == 0 ) {
1056 : // track is rejected since the extrapolated track
1057 : // does not match a slat (border effects)
1058 0 : AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackOutsideGeometry);
1059 : goodForEff = AliESDMuonTrack::kNoEff;
1060 0 : AliDebug(10, "Warning: trigger track outside trigger chamber\n");
1061 0 : continue;
1062 : }
1063 :
1064 0 : matchedDetElemId[0] = matchedDetElemId[1] = detElemIdFromTrack[0];
1065 :
1066 0 : if ( ! FindPadMatchingTrig(vec11, vec21, matchedDetElemId, matchedPads) ) {
1067 : // if ! FindPadMatchingTrig => too many digits matching pad =>
1068 : // => Event not clear => Do not use for efficiency calculation
1069 0 : AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackMatchesManyPads);
1070 : goodForEff = AliESDMuonTrack::kNoEff;
1071 0 : AliDebug(10, Form("Warning: track = %p (%i) matches many pads. Rejected!\n",(void *)matchedTrigTrack, matchedDetElemId[0]));
1072 : }
1073 :
1074 : Int_t nMatched = 0;
1075 :
1076 0 : Int_t mostProbDEmatched = detElemIdFromTrack[0];
1077 0 : for ( Int_t icath=0; icath<2; icath++ ) {
1078 0 : if ( matchedPads.UncheckedAt(icath) ) {
1079 0 : nMatched++;
1080 : // Fill pattern anyway
1081 0 : AliESDMuonTrack::SetFiredChamber(pattern, icath, ich);
1082 0 : digitPerTrack[icath]++;
1083 0 : mostProbDEmatched = matchedDetElemId[icath];
1084 0 : }
1085 : }
1086 0 : Int_t mostProbDEfromTrack = detElemIdFromTrack[0];
1087 0 : for ( Int_t ifound=0; ifound<nFound; ifound++ ) {
1088 0 : if ( detElemIdFromTrack[ifound] == mostProbDEmatched ) {
1089 : mostProbDEfromTrack = mostProbDEmatched;
1090 0 : break;
1091 : }
1092 : }
1093 :
1094 0 : if ( goodForEff == AliESDMuonTrack::kNoEff ) continue;
1095 :
1096 0 : if ( nMatched < 2 ) PadsFromPos(vec11, vec21, mostProbDEfromTrack, padsFromPos);
1097 :
1098 0 : for ( Int_t cath=0; cath<2; cath++ ) {
1099 0 : if ( matchedPads.UncheckedAt(cath) ) validPads.AddAt(matchedPads.UncheckedAt(cath),cath);
1100 0 : else if ( padsFromPos.UncheckedAt(cath) ) {
1101 0 : AliMpPad* currPad = (AliMpPad*)padsFromPos.UncheckedAt(cath);
1102 0 : validPads.AddAt(currPad,cath);
1103 0 : if ( IsMasked(*currPad, mostProbDEfromTrack, cath, vec11, vec21) ) {
1104 : // Check if strip was masked (if inefficient strip is found)
1105 0 : AliESDMuonTrack::AddEffInfo(pattern,AliESDMuonTrack::kTrackMatchesMasks); // pad is masked
1106 0 : AliDebug(10,Form("DetElemId %i cath %i board %i strip %i is masked: effFlag 0", mostProbDEfromTrack, cath, currPad->GetLocalBoardId(0), currPad->GetLocalBoardChannel(0)));
1107 : goodForEff = AliESDMuonTrack::kNoEff;
1108 0 : }
1109 0 : }
1110 : else goodForEff = AliESDMuonTrack::kNoEff;
1111 : } // loop on cathodes
1112 :
1113 0 : if ( goodForEff != AliESDMuonTrack::kNoEff ) {
1114 :
1115 0 : if ( nMatched == 0 && IsCloseToAccEdge(padsFromPos, mostProbDEfromTrack, trackIntersectCh) ) {
1116 : // Non of cathodes is fired.
1117 : // If we are close to the edge of the RPC
1118 : // it could be a problem of acceptance
1119 0 : AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackOutsideGeometry);
1120 : goodForEff = AliESDMuonTrack::kNoEff;
1121 0 : AliDebug(10, "Warning: trigger track at the edge of the chamber\n");
1122 : }
1123 :
1124 0 : Int_t currSlat = mostProbDEmatched%100;
1125 0 : if ( firstSlat < 0 ) firstSlat = currSlat;
1126 0 : else if ( currSlat != firstSlat ) {
1127 : goodForEff = AliESDMuonTrack::kChEff;
1128 : firstSlat = AliESDMuonTrack::kCrossDifferentSlats;
1129 0 : }
1130 :
1131 0 : if ( firstBoard < 0 ) firstBoard = ((AliMpPad*)validPads[kBending])->GetLocalBoardId(0);
1132 :
1133 0 : for ( Int_t cath=0; cath<2; cath++ ){
1134 :
1135 0 : if ( goodForEff == AliESDMuonTrack::kBoardEff) {
1136 : Bool_t atLeastOneLoc = kFALSE;
1137 0 : AliMpPad* currPad = (AliMpPad*)validPads.UncheckedAt(cath);
1138 0 : for ( Int_t iloc=0; iloc<currPad->GetNofLocations(); iloc++) {
1139 0 : if ( currPad->GetLocalBoardId(iloc) == firstBoard ) {
1140 : atLeastOneLoc = kTRUE;
1141 0 : break;
1142 : }
1143 : } // loop on locations
1144 0 : if ( ! atLeastOneLoc ) goodForEff = AliESDMuonTrack::kSlatEff;
1145 0 : }
1146 : } // loop on cathodes
1147 0 : } // if track good for efficiency
1148 0 : matchedPads.Delete();
1149 0 : padsFromPos.Delete();
1150 0 : } // end chamber loop
1151 :
1152 0 : if ( goodForEff == AliESDMuonTrack::kNoEff ) return kFALSE;
1153 :
1154 0 : for(Int_t cath=0; cath<2; cath++){
1155 0 : if(digitPerTrack[cath]<3) {
1156 : // track is rejected since the number of associated
1157 : // digits found is less than 3.
1158 0 : AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackMatchesFewPads);
1159 : goodForEff = AliESDMuonTrack::kNoEff;
1160 0 : AliDebug(10, Form("Warning: found %i digits for trigger track cathode %i.\nRejecting event\n", digitPerTrack[cath],cath));
1161 : }
1162 : } // loop on cathodes
1163 :
1164 0 : if ( goodForEff == AliESDMuonTrack::kNoEff ) return kFALSE;
1165 :
1166 0 : AliESDMuonTrack::AddEffInfo(pattern, firstSlat, firstBoard, goodForEff);
1167 0 : return kTRUE;
1168 0 : }
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