/* $Id$ */
-////////////////////////////////////
-///
+//-----------------------------------------------------------------------------
/// \class AliMUONTrackHitPattern
///
/// This class propagates tracks to trigger chambers
-/// searching for fired strips.
+/// searching for matching trigger tracks and fired strips.
///
/// To each track, a hit pattern for trigger chambers is set.
-/// The hit pattern is a UShort_t with 8 bits used:
-///
-/// 1 1 0 1 1 1 0 1
-/// | | |
-/// ----------- ------------
-/// chamber: 11 12 13 14 | 11 12 13 14
-/// cathode: bending | non-bending
-///
+///
/// The main method is:
-/// * GetHitPattern
+/// * ExecuteValidation
///
/// \author Diego Stocco
-///
-////////////////////////////////////
+//-----------------------------------------------------------------------------
#include "AliMUONTrackHitPattern.h"
#include "AliMUONConstants.h"
#include "AliMUONVDigit.h"
-#include "AliMUONDigitMaker.h"
-#include "AliMUONDigitStoreV1.h"
+#include "AliMUONVDigitStore.h"
#include "AliMUONGeometryTransformer.h"
#include "AliMUONLocalTrigger.h"
-#include "AliMUONLocalTriggerBoard.h"
+#include "AliMUONRecoParam.h"
#include "AliMUONTrack.h"
#include "AliMUONTrackExtrap.h"
#include "AliMUONTrackParam.h"
#include "AliMUONVTrackStore.h"
#include "AliMUONVTriggerStore.h"
+#include "AliMUONTriggerTrack.h"
+#include "AliMUONVTriggerTrackStore.h"
+#include "AliMUONTriggerUtilities.h"
+
#include "AliMpPad.h"
#include "AliMpSegmentation.h"
#include "AliMpVSegmentation.h"
+#include "AliMpDEManager.h"
+#include "AliMpArea.h"
+#include "AliMpConstants.h"
-#include "AliMagF.h"
#include "AliLog.h"
-#include "AliTracker.h"
+#include "AliESDMuonTrack.h"
+#include "AliCodeTimer.h"
#include <Riostream.h>
-#include <TArrayS.h>
-#include <TClonesArray.h>
+#include <TArrayI.h>
#include <TMath.h>
#include <TMatrixD.h>
+#include <TVector3.h>
+#include <TArrayF.h>
+#include <TRandom.h>
/// \cond CLASSIMP
ClassImp(AliMUONTrackHitPattern) // Class implementation in ROOT context
//______________________________________________________________________________
-AliMUONTrackHitPattern::AliMUONTrackHitPattern(const AliMUONGeometryTransformer& transformer,
- const AliMUONDigitMaker& digitMaker)
- : TObject(),
- fTransformer(transformer),
- fDigitMaker(digitMaker)
+AliMUONTrackHitPattern::AliMUONTrackHitPattern(const AliMUONRecoParam* recoParam,
+ const AliMUONGeometryTransformer& transformer,
+ const AliMUONVDigitStore& digitStore,
+ const AliMUONTriggerUtilities* triggerUtilities)
+: TObject(),
+fkRecoParam(recoParam),
+fkTransformer(transformer),
+fkDigitStore(digitStore),
+fkTriggerUtilities(triggerUtilities),
+fkMaxDistance(99999.) // obsolete
{
- /// Default constructor
-
- // Set magnetic field
- const AliMagF* kField = AliTracker::GetFieldMap();
- if (!kField) AliFatal("No field available");
- AliMUONTrackExtrap::SetField(kField);
+ /// Default constructor
+ AliMUONTrackExtrap::SetField();
}
//______________________________________________________________________________
-void AliMUONTrackHitPattern::GetHitPattern(AliMUONVTrackStore& trackStore,
- const AliMUONVTriggerStore& triggerStore) const
+void
+AliMUONTrackHitPattern::ApplyMCSCorrections(AliMUONTrackParam& trackParam) const
{
- //
- /// Main method:
- /// Loops on reco tracks, extrapolates them to trigger chambers
- /// and searches for matching digits
- //
+ //
+ /// Returns uncertainties on extrapolated position.
+ /// Takes into account Branson plane corrections in the iron wall.
+ //
+
+ const Float_t kZFilterOut = AliMUONConstants::MuonFilterZEnd();
+ const Float_t kFilterThickness = kZFilterOut-AliMUONConstants::MuonFilterZBeg(); // cm
+
+ AliMUONTrackExtrap::ExtrapToZCov(&trackParam, kZFilterOut); // Extrap to muon filter end
+ AliMUONTrackExtrap::AddMCSEffect(&trackParam, kFilterThickness, AliMUONConstants::MuonFilterX0()); // Add MCS effects
+ return;
+}
+
+
+//______________________________________________________________________________
+void AliMUONTrackHitPattern::ExecuteValidation(const AliMUONVTrackStore& trackStore,
+ const AliMUONVTriggerTrackStore& triggerTrackStore,
+ const AliMUONVTriggerStore& triggerStore) const
+{
+ //
+ /// Main method:
+ /// Loops on reco tracks, extrapolates them to trigger chambers
+ /// and searches for matching trigger tracks and digits
+ //
+
+ // Get the hit pattern for all trigger tracks
+ AliMUONTriggerTrack* triggerTrack;
+ TIter itTriggerTrack(triggerTrackStore.CreateIterator());
+ while ( ( triggerTrack = static_cast<AliMUONTriggerTrack*>(itTriggerTrack() ) ) ){
+ AliMUONTrackParam trackParam;
+ trackParam.SetNonBendingCoor(triggerTrack->GetX11());
+ trackParam.SetBendingCoor(triggerTrack->GetY11());
+ trackParam.SetZ(triggerTrack->GetZ11());
+ trackParam.SetNonBendingSlope(triggerTrack->GetSlopeX());
+ trackParam.SetBendingSlope(triggerTrack->GetSlopeY());
+ trackParam.SetInverseBendingMomentum(1.);
+ UInt_t pattern = GetHitPattern(trackParam, kTRUE);
+ // The pattern is a UInt_t, including the information
+ // on the matched local board,
+ // but for backward compatibility we fill a UShort_t
+ // which do not contain such info.
+ // In the old pattern, we use 15 bits out of 16, so the last one should
+ // be masked or it will be filled with 1 bit with the local board info.
+ triggerTrack->SetHitsPatternInTrigCh((UShort_t)(pattern & 0x7FFF));
+ AliDebug(1, Form("Hit pattern (MTR): hits 0x%x slat %2i board %3i effFlag %i",
+ pattern & 0xFF, AliESDMuonTrack::GetSlatOrInfo(pattern),triggerTrack->GetLoTrgNum(), AliESDMuonTrack::GetEffFlag(pattern)));
+ }
+
+ // Match tracker tracks with trigger tracks.
+ TIter itTrack(trackStore.CreateIterator());
+ AliMUONTrack* track;
+
+ const Int_t kFirstTrigCh = AliMUONConstants::NTrackingCh();
+
+ while ( ( track = static_cast<AliMUONTrack*>(itTrack()) ) )
+ {
+ AliMUONTrackParam trackParam(*((AliMUONTrackParam*) (track->GetTrackParamAtCluster()->Last())));
+
+ ApplyMCSCorrections(trackParam);
+ AliMUONTrackExtrap::ExtrapToZCov(&trackParam, AliMUONConstants::DefaultChamberZ(kFirstTrigCh)); // extrap to 1st trigger chamber
+
+ AliMUONTriggerTrack *matchedTriggerTrack = MatchTriggerTrack(track, trackParam, triggerTrackStore, triggerStore);
+ if ( matchedTriggerTrack ) track->SetHitsPatternInTrigCh(matchedTriggerTrack->GetHitsPatternInTrigCh());
+
+ UInt_t pattern = GetHitPattern(trackParam, kFALSE);
+ track->SetHitsPatternInTrigChTrk(pattern);
+ AliDebug(1, Form("Hit pattern (MTK): hits 0x%x slat %2i board %3i effFlag %i",
+ pattern & 0xFF, AliESDMuonTrack::GetSlatOrInfo(pattern), AliESDMuonTrack::GetCrossedBoard(pattern), AliESDMuonTrack::GetEffFlag(pattern)));
+ }
+}
+
+
+//______________________________________________________________________________
+Bool_t AliMUONTrackHitPattern::FindMatchingPads(const AliMUONTrackParam* trackParam,
+ TArrayI& matchedDetElemId, TObjArray& pads,
+ const AliMUONVDigitStore& digitStore,
+ Bool_t isTriggerTrack) const
+{
+ //
+ /// Search for matching digits in trigger chamber
+ //
+ enum {kBending, kNonBending};
+
+ Double_t minMatchDist[2];
+ Int_t padsInCheckArea[2];
+
+ AliMUONTrackParam trackParamAtPadZ(*trackParam);
+
+ Int_t inputDetElemId = matchedDetElemId[0];
+
+ for(Int_t cath=0; cath<2; cath++){
+ minMatchDist[cath] = 99999.;
+ padsInCheckArea[cath] = 0;
+ }
+
+ Int_t iChamber = AliMpDEManager::GetChamberId(inputDetElemId);
+ Int_t iSlat = inputDetElemId%100;
+
+ TIter next(digitStore.CreateTriggerIterator());
+ AliMUONVDigit* mDigit;
+
+ Double_t xPad = 0., yPad = 0., zPad = 0.;
+ Double_t sigmaX = 0., sigmaY = 0.;
+
+ Double_t nSigmas = ( isTriggerTrack ) ? GetRecoParam()->GetStripCutForTrigger() : GetRecoParam()->GetSigmaCutForTrigger();
+ Bool_t goodForEff = kTRUE;
+
+ while ( ( mDigit = static_cast<AliMUONVDigit*>(next()) ) )
+ {
+ Int_t currDetElemId = mDigit->DetElemId();
+ Int_t currCh = AliMpDEManager::GetChamberId(currDetElemId);
+ if ( currCh != iChamber ) continue;
+ Int_t currSlat = currDetElemId%100;
+ Int_t slatDiff = TMath::Abs(currSlat-iSlat);
+ if ( slatDiff>1 && slatDiff<17 ) continue; // Check neighbour slats
+
+ Int_t cathode = mDigit->Cathode();
+ Int_t ix = mDigit->PadX();
+ Int_t iy = mDigit->PadY();
+ const AliMpVSegmentation* seg = AliMpSegmentation::Instance()
+ ->GetMpSegmentation(currDetElemId,AliMp::GetCathodType(cathode));
+ AliMpPad pad = seg->PadByIndices(ix,iy,kTRUE);
+
+ // Get local pad coordinates
+ Double_t xPadLocal = pad.GetPositionX();
+ Double_t yPadLocal = pad.GetPositionY();
+ Double_t dpx = pad.GetDimensionX();
+ Double_t dpy = pad.GetDimensionY();
+ Double_t xWidth = 2. * dpx;
+ Double_t yWidth = 2. * dpy;
+
+ // Get global pad coordinates
+ fkTransformer.Local2Global(currDetElemId, xPadLocal, yPadLocal, 0., xPad, yPad, zPad);
+
+ // Get track parameters at pad z
+ if ( trackParamAtPadZ.CovariancesExist() ) AliMUONTrackExtrap::LinearExtrapToZCov(&trackParamAtPadZ, zPad);
+ else AliMUONTrackExtrap::LinearExtrapToZ(&trackParamAtPadZ, zPad);
+
+ Double_t deltaX = TMath::Abs(xPad-trackParamAtPadZ.GetNonBendingCoor()) - dpx;
+ Double_t deltaY = TMath::Abs(yPad-trackParamAtPadZ.GetBendingCoor()) - dpy;
+
+
+ // Get sigmas
+ if ( isTriggerTrack ) {
+ Double_t checkWidth = TMath::Min(xWidth, yWidth);
+ Double_t maxCheckArea = GetRecoParam()->GetMaxStripAreaForTrigger() * checkWidth;
+ Double_t sigma = TMath::Max(checkWidth, 2.);
+ sigmaX = sigma; // in cm
+ sigmaY = sigma; // in cm
+ if ( deltaX <= maxCheckArea && deltaY <= maxCheckArea ) {
+ padsInCheckArea[cathode]++;
+ if ( padsInCheckArea[cathode] > 2 ) {
+ goodForEff = kFALSE;
+ AliDebug(2, Form("padsInCheckArea[%i] = %i\n",cathode,padsInCheckArea[cathode]));
+ }
+ }
+ }
+ else {
+ const TMatrixD& kCovParam = trackParamAtPadZ.GetCovariances();
+ sigmaX = TMath::Sqrt(kCovParam(0,0)); // in cm
+ sigmaY = TMath::Sqrt(kCovParam(2,2)); // in cm
+ }
- const Int_t kMask[2][4]= {{0x80, 0x40, 0x20, 0x10},
- {0x08, 0x04, 0x02, 0x01}};
- Bool_t isMatch[2];
+ 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",
+ currDetElemId,cathode,dpx,dpy,ix,iy,xPad,yPad,trackParamAtPadZ.GetNonBendingCoor(),trackParamAtPadZ.GetBendingCoor(),deltaX,deltaY,sigmaX,sigmaY,trackParamAtPadZ.P()));
+ //if ( deltaX <= maxCheckArea && deltaY <= maxCheckArea ) padsInCheckArea[cathode]++;
+ if ( deltaX > nSigmas * sigmaX || deltaY > nSigmas * sigmaY ) continue;
+ Double_t matchDist = TMath::Max(deltaX, deltaY);
+ if ( matchDist > minMatchDist[cathode] ) continue;
+ if ( pads.At(cathode) ) delete pads.RemoveAt(cathode);
+ pads.AddAt((AliMpPad*)pad.Clone(),cathode);
+ minMatchDist[cathode] = matchDist;
+ matchedDetElemId[cathode] = currDetElemId; // Set the input detection element id to the matched one
+ } // loop on digits
+
+// // If track matches many pads, it is not good for effciency determination.
+// // However we still want to calculate the hit pattern.
+// for ( Int_t cath=0; cath<2; cath++ ){
+// if ( padsInCheckArea[cath] > 2 ) {
+// AliDebug(2, Form("padsInCheckArea[%i] = %i\n",cath,padsInCheckArea[cath]));
+// return kFALSE;
+// }
+// }
+
+ return goodForEff;
+}
+
- UShort_t pattern=0;
+//_____________________________________________________________________________
+UInt_t AliMUONTrackHitPattern::GetHitPattern(const AliMUONTrackParam& trackParam, Bool_t isTriggerTrack) const
+{
+ //
+ /// Searches for matching digits around the track.
+ //
+
+ AliCodeTimerAuto("",0);
+
+ TArrayI digitPerTrack(2);
+ digitPerTrack.Reset();
+
+ UInt_t pattern = 0;
+
+ TObjArray trackParamList, matchedPads(2), maskedPads(2), padsFromPos(4), validPads(2);
+ trackParamList.SetOwner(); matchedPads.SetOwner(); maskedPads.SetOwner(); padsFromPos.SetOwner();
+
+ Int_t firstSlat = -1, firstBoard = -1;
+ AliESDMuonTrack::EAliTriggerChPatternFlag goodForEff = AliESDMuonTrack::kBoardEff;
+ TArrayI matchedDetElemId(2), maskedDetElemId(2), detElemIdFromTrack(2), validDetElemId(2);
+
+ for(Int_t ich=0; ich<AliMUONConstants::NTriggerCh(); ich++) { // chamber loop
+
+ trackParamList.Delete(); matchedPads.Delete(); maskedPads.Delete(); padsFromPos.Delete(); validPads.Clear();
+
+ Int_t nFound = GetTrackParamAtChamber(trackParam, 11+ich, trackParamList, detElemIdFromTrack, padsFromPos);
+ if ( nFound == 0 ) {
+ // track is rejected since the extrapolated track
+ // does not match a slat (border effects)
+ AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackOutsideGeometry);
+ goodForEff = AliESDMuonTrack::kNoEff;
+ AliDebug(2, "Warning: trigger track outside trigger chamber\n");
+ continue;
+ }
- AliMUONDigitStoreV1 digitStore;
+ // Search for masked pads
+ maskedDetElemId.Reset(detElemIdFromTrack[0]);
+ FindMatchingPads((AliMUONTrackParam*)trackParamList.At(0), maskedDetElemId, maskedPads, *(fkTriggerUtilities->GetMaskedDigits()), isTriggerTrack);
+ if ( maskedPads.GetEntries() > 0 ) {
+ AliESDMuonTrack::AddEffInfo(pattern,AliESDMuonTrack::kTrackMatchesMasks); // pad is masked
+ goodForEff = AliESDMuonTrack::kNoEff;
+ for ( Int_t icath=0; icath<2; icath++ ) {
+ AliMpPad* currPad = (AliMpPad*)maskedPads.UncheckedAt(icath);
+ if ( ! currPad ) continue;
+ AliDebug(2,Form("DetElemId %i cath %i board %i strip %i is masked: effFlag 0", matchedDetElemId[icath], icath, currPad->GetLocalBoardId(0), currPad->GetLocalBoardChannel(0)));
+ }
+ // continue;
+ // We want to calculate the hit pattern in any case, so we do not "continue"
+ // However we set the flag in such a way not to use the track for efficiency calculations
+ }
- TriggerDigits(triggerStore,digitStore);
+ // If no masked pads matched, search for active pads
+ matchedDetElemId.Reset(detElemIdFromTrack[0]);
+ if ( ! FindMatchingPads((AliMUONTrackParam*)trackParamList.At(0), matchedDetElemId, matchedPads, fkDigitStore, isTriggerTrack) ) {
+ // if ! FindPadMatchingTrig => too many digits matching pad =>
+ // => Event not clear => Do not use for efficiency calculation
+ AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackMatchesManyPads);
+ goodForEff = AliESDMuonTrack::kNoEff;
+ AliDebug(2, Form("Warning: track in %i matches many pads. Rejected!\n", matchedDetElemId[0]));
+ }
- AliMUONTrack* muonTrack;
- TIter next(trackStore.CreateIterator());
+ Int_t nMatched = 0;
- while ( ( muonTrack = static_cast<AliMUONTrack*>(next()) ) )
- {
- pattern = 0;
- AliMUONTrackParam *trackParam = static_cast<AliMUONTrackParam*>
- (muonTrack->GetTrackParamAtHit()->Last());
+ Int_t mostProbDEmatched = detElemIdFromTrack[0];
+ for ( Int_t icath=0; icath<2; icath++ ) {
+ if ( matchedPads.UncheckedAt(icath) ) {
+ nMatched++;
+ // Fill pattern anyway
+ AliESDMuonTrack::SetFiredChamber(pattern, icath, ich);
+ digitPerTrack[icath]++;
+ mostProbDEmatched = matchedDetElemId[icath];
+ }
+ }
+ Int_t mostProbDEindex = 0;
+ for ( Int_t ifound=0; ifound<nFound; ifound++ ) {
+ if ( detElemIdFromTrack[ifound] == mostProbDEmatched ) {
+ mostProbDEindex = ifound;
+ break;
+ }
+ }
+
+ if ( goodForEff == AliESDMuonTrack::kNoEff ) continue;
+
+ for ( Int_t icath=0; icath<2; icath++ ) {
+ if ( matchedPads.UncheckedAt(icath) ) {
+ validPads.AddAt(matchedPads.UncheckedAt(icath),icath);
+ validDetElemId[icath] = matchedDetElemId[icath];
+ }
+ else {
+ validPads.AddAt(padsFromPos.UncheckedAt(2*mostProbDEindex + icath),icath);
+ validDetElemId[icath] = detElemIdFromTrack[mostProbDEindex];
+ }
+ }
+
+ Int_t currSlat = mostProbDEmatched%100;
+ if ( firstSlat < 0 ) firstSlat = currSlat;
+
+ if ( currSlat != firstSlat || validDetElemId[0] != validDetElemId[1] ) {
+ goodForEff = AliESDMuonTrack::kChEff;
+ firstSlat = AliESDMuonTrack::kCrossDifferentSlats;
+ }
+
+ if ( firstBoard < 0 ) firstBoard = ((AliMpPad*)validPads.UncheckedAt(0))->GetLocalBoardId(0);
+
+ for ( Int_t icath=0; icath<2; icath++ ){
+
+ if ( goodForEff == AliESDMuonTrack::kBoardEff) {
+ Bool_t atLeastOneLoc = kFALSE;
+ AliMpPad* currPad = (AliMpPad*)validPads.UncheckedAt(icath);
+ for ( Int_t iloc=0; iloc<currPad->GetNofLocations(); iloc++) {
+ if ( currPad->GetLocalBoardId(iloc) == firstBoard ) {
+ atLeastOneLoc = kTRUE;
+ break;
+ }
+ } // loop on locations
+ if ( ! atLeastOneLoc ) goodForEff = AliESDMuonTrack::kSlatEff;
+ }
+ } // loop on cathodes
+ // } // if track good for efficiency
+ } // end chamber loop
+
+ if ( goodForEff == AliESDMuonTrack::kNoEff ) return pattern;
+
+ for(Int_t cath=0; cath<2; cath++){
+ if(digitPerTrack[cath]<3) {
+ // track is rejected since the number of associated
+ // digits found is less than 3.
+ AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackMatchesFewPads);
+ goodForEff = AliESDMuonTrack::kNoEff;
+ AliDebug(2, Form("Warning: found %i digits for trigger track cathode %i.\nRejecting event\n", digitPerTrack[cath],cath));
+ }
+ } // loop on cathodes
+
+ if ( goodForEff == AliESDMuonTrack::kNoEff ) return pattern;
+
+ AliESDMuonTrack::AddEffInfo(pattern, firstSlat, firstBoard, goodForEff);
+ return pattern;
+}
+
+
+
+//_____________________________________________________________________________
+Int_t AliMUONTrackHitPattern::GetTrackParamAtChamber(const AliMUONTrackParam& inputTrackParam, Int_t chamber,
+ TObjArray& trackParamList, TArrayI& foundDetElemId,
+ TObjArray& padsFromPos) const
+{
+ //
+ /// Return the extrapolated the track parameter at the given chamber
+ /// and returns the matching DetElemId
+ /// CAVEAT: at the border the result is not univoque
+ //
+
+ Int_t nFound = 0;
+ foundDetElemId[0] = foundDetElemId[1] = 0;
+ AliMUONTrackParam trackParamCopy(inputTrackParam);
+ TVector3 globalPoint1(trackParamCopy.GetNonBendingCoor(), trackParamCopy.GetBendingCoor(), trackParamCopy.GetZ());
+ AliMUONTrackExtrap::LinearExtrapToZ(&trackParamCopy, trackParamCopy.GetZ() + 20.);
+ TVector3 globalPoint2(trackParamCopy.GetNonBendingCoor(), trackParamCopy.GetBendingCoor(), trackParamCopy.GetZ());
+ TVector3 localCoor;
+
+ // AliMpArea pointArea(x, y, 2.*AliMpConstants::LengthTolerance(), 2.*AliMpConstants::LengthTolerance());
+ AliMpDEIterator it;
+ Double_t xGlobal, yGlobal, zGlobal;
+ for ( it.First(chamber-1); ! it.IsDone(); it.Next() ){
+ Int_t detElemId = it.CurrentDEId();
+ PosInDetElemIdLocal(localCoor, globalPoint1, globalPoint2, detElemId);
+ fkTransformer.Local2Global(detElemId, localCoor.X(), localCoor.Y(), localCoor.Z(), xGlobal, yGlobal, zGlobal);
+ AliMpArea pointArea(xGlobal, yGlobal, 2.*AliMpConstants::LengthTolerance(), 2.*AliMpConstants::LengthTolerance());
+ AliMpArea* deArea = fkTransformer.GetDEArea(detElemId);
+ if ( deArea->Contains(pointArea) ) {
+ // Check if track matches valid pads
+ // (this is not trivial for cut RPC)
+ Int_t validPads = 0;
+ for ( Int_t icath=0; icath<2; icath++ ) {
+ const AliMpVSegmentation* seg =
+ AliMpSegmentation::Instance()
+ ->GetMpSegmentation(detElemId,AliMp::GetCathodType(icath));
+ AliMpPad pad = seg->PadByPosition(localCoor.X(),localCoor.Y(),kFALSE);
+ if ( pad.IsValid() ) {
+ padsFromPos.AddAt(pad.Clone(), 2*nFound + icath);
+ validPads++;
+ }
+ }
+ if ( validPads < 2 ) continue;
+ AliMUONTrackParam* extrapTrackParam = new AliMUONTrackParam(inputTrackParam);
+ if ( extrapTrackParam->CovariancesExist() ) AliMUONTrackExtrap::LinearExtrapToZCov(extrapTrackParam, zGlobal);
+ else AliMUONTrackExtrap::LinearExtrapToZ(extrapTrackParam, zGlobal);
+ trackParamList.AddAt(extrapTrackParam,nFound);
+ foundDetElemId[nFound] = detElemId;
+ nFound++;
+ if ( nFound == 2 ) break;
+ }
+ else if ( nFound > 0 ) break;
+ } // loop on detElemId
+
+ return nFound;
+}
+
+
+//______________________________________________________________________________
+AliMUONTriggerTrack *
+AliMUONTrackHitPattern::MatchTriggerTrack(AliMUONTrack* track,
+ AliMUONTrackParam& trackParam,
+ const AliMUONVTriggerTrackStore& triggerTrackStore,
+ const AliMUONVTriggerStore& triggerStore) const
+{
+ //
+ /// Match track with trigger track
+ //
+
+ Int_t matchTrigger = 0;
+ Int_t loTrgNum(-1);
+ TMatrixD paramDiff(3,1);
+ Double_t chi2;
+ Double_t chi2MatchTrigger = 0., minChi2MatchTrigger = 999.;
+ Int_t doubleMatch = -1; // Check if track matches 2 trigger tracks
+ Double_t doubleChi2 = -1.;
+ AliMUONTriggerTrack* doubleTriggerTrack = 0x0;
+ AliMUONTriggerTrack* matchedTriggerTrack = 0x0;
+
+
+ // Covariance matrix 3x3 (X,Y,slopeY) for trigger tracks
+ TMatrixD trackCov(3,3);
+
+ AliMUONTriggerTrack *triggerTrack;
+ TIter itTriggerTrack(triggerTrackStore.CreateIterator());
+ while ( ( triggerTrack = static_cast<AliMUONTriggerTrack*>(itTriggerTrack() ) ) )
+ {
+ AliMUONTrackExtrap::LinearExtrapToZCov(&trackParam, triggerTrack->GetZ11());
+ const TMatrixD& kParamCov = trackParam.GetCovariances();
+
+ Double_t xTrack = trackParam.GetNonBendingCoor();
+ Double_t yTrack = trackParam.GetBendingCoor();
+ Double_t ySlopeTrack = trackParam.GetBendingSlope();
+
+ paramDiff(0,0) = triggerTrack->GetX11() - xTrack;
+ paramDiff(1,0) = triggerTrack->GetY11() - yTrack;
+ paramDiff(2,0) = triggerTrack->GetSlopeY() - ySlopeTrack;
+
+ // Covariance matrix 3x3 (X,Y,slopeY) for tracker tracks
+ trackCov.Zero();
+ trackCov(0,0) = kParamCov(0,0);
+ trackCov(1,1) = kParamCov(2,2);
+ trackCov(2,2) = kParamCov(3,3);
+ trackCov(1,2) = kParamCov(2,3);
+ trackCov(2,1) = kParamCov(3,2);
+
+ // Covariance matrix 3x3 (X,Y,slopeY) for trigger tracks
+ TMatrixD trigCov(triggerTrack->GetCovariances());
+
+ TMatrixD sumCov(trackCov,TMatrixD::kPlus,trigCov);
+ if (sumCov.Determinant() != 0) {
+ sumCov.Invert();
- for(Int_t ch=0; ch<4; ++ch)
+ TMatrixD tmp(sumCov,TMatrixD::kMult,paramDiff);
+ TMatrixD chi2M(paramDiff,TMatrixD::kTransposeMult,tmp);
+ chi2 = chi2M(0,0);
+ } else {
+ AliWarning(" Determinant = 0");
+ Double_t sigma2 = 0.;
+ chi2 = 0.;
+ for (Int_t iVar = 0; iVar < 3; iVar++) {
+ sigma2 = trackCov(iVar,iVar) + trigCov(iVar,iVar);
+ chi2 += paramDiff(iVar,0) * paramDiff(iVar,0) / sigma2;
+ }
+ }
+
+ chi2 /= 3.; // Normalized Chi2: 3 degrees of freedom (X,Y,slopeY)
+ if (chi2 < GetRecoParam()->GetMaxNormChi2MatchTrigger())
+ {
+ Bool_t isDoubleTrack = (TMath::Abs(chi2 - minChi2MatchTrigger)<1.);
+ if (chi2 < minChi2MatchTrigger && chi2 < GetRecoParam()->GetMaxNormChi2MatchTrigger())
{
- AliMUONTrackExtrap::ExtrapToZCov(trackParam, AliMUONConstants::DefaultChamberZ(10+ch));
- FindPadMatchingTrack(digitStore,*trackParam, isMatch, ch);
- for(Int_t cath=0; cath<2; ++cath)
- {
- if(isMatch[cath]) pattern |= kMask[cath][ch];
- }
+ if(isDoubleTrack)
+ {
+ doubleMatch = loTrgNum;
+ doubleChi2 = chi2MatchTrigger;
+ doubleTriggerTrack = matchedTriggerTrack;
+ }
+ minChi2MatchTrigger = chi2;
+ chi2MatchTrigger = chi2;
+ loTrgNum = triggerTrack->GetLoTrgNum();
+ matchedTriggerTrack = triggerTrack;
+ AliMUONLocalTrigger* locTrg = triggerStore.FindLocal(loTrgNum);
+ matchTrigger = 1;
+ if(locTrg->LoLpt()>0) matchTrigger = 2;
+ if(locTrg->LoHpt()>0) matchTrigger = 3;
}
- muonTrack->SetHitsPatternInTrigCh(pattern);
+ else if(isDoubleTrack)
+ {
+ doubleMatch = triggerTrack->GetLoTrgNum();
+ doubleChi2 = chi2;
+ }
+ }
+ }
+ if(doubleMatch>=0)
+ { // If two trigger tracks match, select the one passing more trigger cuts
+ AliDebug(1, Form("Two candidates found: %i and %i",loTrgNum,doubleMatch));
+ AliMUONLocalTrigger* locTrg1 = triggerStore.FindLocal(doubleMatch);
+ if((locTrg1->LoLpt()>0 && matchTrigger<2) || (locTrg1->LoHpt() && matchTrigger<3))
+ {
+ if(locTrg1->LoHpt()>0) matchTrigger=3;
+ else matchTrigger = 2;
+ loTrgNum = doubleMatch;
+ chi2MatchTrigger = doubleChi2;
+ matchedTriggerTrack = doubleTriggerTrack;
+ }
+ }
+
+ track->SetMatchTrigger(matchTrigger);
+ track->SetChi2MatchTrigger(chi2MatchTrigger);
+
+ AliMUONLocalTrigger* locTrg = static_cast<AliMUONLocalTrigger*>(triggerStore.FindLocal(loTrgNum));
+
+ if (locTrg)
+ {
+ track->SetLocalTrigger(locTrg->LoCircuit(),
+ locTrg->LoStripX(),
+ locTrg->LoStripY(),
+ locTrg->GetDeviation(),
+ locTrg->LoLpt(),
+ locTrg->LoHpt(),
+ locTrg->GetTriggerWithoutChamber());
+ }
+
+ return matchedTriggerTrack;
+}
+
+
+//_____________________________________________________________________________
+Bool_t AliMUONTrackHitPattern::PosInDetElemIdLocal(TVector3& localCoor, const TVector3& globalPoint1,
+ const TVector3& globalPoint2, Int_t detElemId) const
+{
+ /// Given two points belonging to a line (global coordinates)
+ /// it returns the intersection point with the detElemId (local coordinates)
+
+ Double_t xloc, yloc, zloc;
+ fkTransformer.Global2Local(detElemId, globalPoint1.X(), globalPoint1.Y(), globalPoint1.Z(), xloc, yloc, zloc);
+ TVector3 localPoint1(xloc, yloc, zloc);
+ fkTransformer.Global2Local(detElemId, globalPoint2.X(), globalPoint2.Y(), globalPoint2.Z(), xloc, yloc, zloc);
+ TVector3 localPoint2(xloc, yloc, zloc);
+ localCoor = localPoint1 - ( localPoint1.Z() / ( localPoint2.Z() - localPoint1.Z() ) ) * ( localPoint2 - localPoint1 );
+
+ return kTRUE;
+}
+
+
+// THE FOLLOWING METHODS ARE OBSOLETE
+
+//______________________________________________________________________________
+UInt_t AliMUONTrackHitPattern::GetHitPattern(const AliMUONTriggerTrack* matchedTriggerTrack) const
+{
+ //
+ /// Get hit pattern on trigger chambers for the current trigger track
+ //
+ UInt_t pattern = 0;
+ PerformTrigTrackMatch(pattern, matchedTriggerTrack);
+ return pattern;
+}
+
+
+//______________________________________________________________________________
+UInt_t AliMUONTrackHitPattern::GetHitPattern(AliMUONTrackParam* trackParam) const
+{
+ //
+ /// Get hit pattern on trigger chambers for the current tracker track
+ //
+ UInt_t pattern = 0;
+ Bool_t isMatch[2];
+ const Int_t kNTrackingCh = AliMUONConstants::NTrackingCh();
+
+ for(Int_t ch=0; ch<4; ++ch)
+ {
+ Int_t iChamber = kNTrackingCh+ch;
+ AliMUONTrackExtrap::ExtrapToZCov(trackParam, AliMUONConstants::DefaultChamberZ(iChamber));
+ FindPadMatchingTrack(*trackParam, isMatch, iChamber);
+ for(Int_t cath=0; cath<2; ++cath)
+ {
+ if(isMatch[cath]) AliESDMuonTrack::SetFiredChamber(pattern, cath, ch);
}
+ }
+
+ // pattern obtained by propagation of tracker track
+ // when it does not match the trigger.
+ AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackerTrackPattern);
+
+ return pattern;
}
//______________________________________________________________________________
void
-AliMUONTrackHitPattern::FindPadMatchingTrack(AliMUONVDigitStore& digitStore,
- const AliMUONTrackParam& trackParam,
- Bool_t isMatch[2], Int_t /*iChamber*/) const
+AliMUONTrackHitPattern::FindPadMatchingTrack(const AliMUONTrackParam& trackParam,
+ Bool_t isMatch[2], Int_t iChamber) const
{
//
- /// Given track position, searches for matching digits.
+ /// Given the tracker track position, searches for matching digits.
//
Float_t minMatchDist[2];
for(Int_t cath=0; cath<2; ++cath)
{
isMatch[cath]=kFALSE;
- minMatchDist[cath]=9999.;
+ minMatchDist[cath]=fkMaxDistance/10.;
}
- TIter next(digitStore.CreateIterator());
+ TIter next(fkDigitStore.CreateTriggerIterator());
AliMUONVDigit* mDigit;
-
+
while ( ( mDigit = static_cast<AliMUONVDigit*>(next()) ) )
{
Int_t currDetElemId = mDigit->DetElemId();
+ Int_t currCh = AliMpDEManager::GetChamberId(currDetElemId);
+ if(currCh!=iChamber) continue;
Int_t cathode = mDigit->Cathode();
Int_t ix = mDigit->PadX();
Int_t iy = mDigit->PadY();
const AliMpVSegmentation* seg = AliMpSegmentation::Instance()
->GetMpSegmentation(currDetElemId,AliMp::GetCathodType(cathode));
- AliMpPad pad = seg->PadByIndices(AliMpIntPair(ix,iy),kTRUE);
- Float_t xlocal1 = pad.Position().X();
- Float_t ylocal1 = pad.Position().Y();
- Float_t dpx = pad.Dimensions().X();
- Float_t dpy = pad.Dimensions().Y();
- fTransformer.Local2Global(currDetElemId, xlocal1, ylocal1, 0, xpad, ypad, zpad);
+ AliMpPad pad = seg->PadByIndices(ix,iy,kTRUE);
+ Float_t xlocal1 = pad.GetPositionX();
+ Float_t ylocal1 = pad.GetPositionY();
+ Float_t dpx = pad.GetDimensionX();
+ Float_t dpy = pad.GetDimensionY();
+
+ fkTransformer.Local2Global(currDetElemId, xlocal1, ylocal1, 0, xpad, ypad, zpad);
Float_t matchDist = MinDistanceFromPad(xpad, ypad, zpad, dpx, dpy, trackParam);
if(matchDist>minMatchDist[cathode])continue;
isMatch[cathode] = kTRUE;
+ if(isMatch[0] && isMatch[1]) break;
minMatchDist[cathode] = matchDist;
}
}
const AliMUONTrackParam& trackParam) const
{
//
- /// Decides if the digit belongs to the track.
+ /// Decides if the digit belongs to the tracker track.
//
- Float_t xTrackAtPad = trackParam.GetNonBendingCoor();
- Float_t yTrackAtPad = trackParam.GetBendingCoor();
- Float_t sigmaX, sigmaY, sigmaMS;
- GetPosUncertainty(trackParam, zPad, sigmaX, sigmaY, sigmaMS);
+ AliMUONTrackParam trackParamAtPadZ(trackParam);
+ AliMUONTrackExtrap::LinearExtrapToZCov(&trackParamAtPadZ, zPad);
- Float_t maxDistX = 3.*(sigmaX + sigmaMS); // in cm
- Float_t maxDistY = 3.*(sigmaY + sigmaMS); // in cm
+ Float_t xTrackAtPad = trackParamAtPadZ.GetNonBendingCoor();
+ Float_t yTrackAtPad = trackParamAtPadZ.GetBendingCoor();
+
+ const Float_t kNSigma = GetRecoParam()->GetSigmaCutForTrigger();
+
+ const TMatrixD& kCovParam = trackParamAtPadZ.GetCovariances();
+
+ Float_t sigmaX = TMath::Sqrt(kCovParam(0,0));
+ Float_t sigmaY = TMath::Sqrt(kCovParam(2,2));
+
+ Float_t maxDistX = kNSigma * sigmaX; // in cm
+ Float_t maxDistY = kNSigma * sigmaY; // in cm
Float_t deltaX = TMath::Abs(xPad-xTrackAtPad)-dpx;
Float_t deltaY = TMath::Abs(yPad-yTrackAtPad)-dpy;
- Float_t matchDist = 99999.;
+ Float_t matchDist = fkMaxDistance;
if(deltaX<=maxDistX && deltaY<=maxDistY) matchDist = TMath::Max(deltaX, deltaY);
+
return matchDist;
}
-//______________________________________________________________________________
-void
-AliMUONTrackHitPattern::GetPosUncertainty(const AliMUONTrackParam& trackParam,
- Float_t zChamber,
- Float_t &sigmaX, Float_t &sigmaY,
- Float_t &sigmaMS) const
+//_____________________________________________________________________________
+Bool_t AliMUONTrackHitPattern::FindPadMatchingTrig(const TVector3& vec11, const TVector3& vec21,
+ Int_t matchedDetElemId[2], TObjArray& pads) const
{
- //
- /// Returns uncertainties on extrapolated position.
- /// Takes into account Branson plane corrections in the iron wall.
- //
-
- const Float_t kAlpha = 0.1123; // GeV/c
+ //
+ /// Check slat and board number of digit matching trigger track
+ //
+
+ enum {kBending, kNonBending};
+
+ Float_t minMatchDist[2];
+ Int_t padsInCheckArea[2];
+
+ Int_t inputDetElemId = matchedDetElemId[0];
+
+ for(Int_t cath=0; cath<2; cath++){
+ minMatchDist[cath] = fkMaxDistance/10.;
+ padsInCheckArea[cath] = 0;
+ }
+
+ Int_t iChamber = AliMpDEManager::GetChamberId(inputDetElemId);
+ Int_t iSlat = inputDetElemId%100;
+
+ TIter next(fkDigitStore.CreateTriggerIterator());
+ AliMUONVDigit* mDigit;
+ TVector3 localExtrap;
+
+ Int_t previousDetElemId = -1;
+
+ while ( ( mDigit = static_cast<AliMUONVDigit*>(next()) ) )
+ {
+ Int_t currDetElemId = mDigit->DetElemId();
+ Int_t currCh = AliMpDEManager::GetChamberId(currDetElemId);
+ if ( currCh != iChamber ) continue;
+ Int_t currSlat = currDetElemId%100;
+ Int_t slatDiff = TMath::Abs(currSlat-iSlat);
+ if ( slatDiff>1 && slatDiff<17 ) continue; // Check neighbour slats
+ Int_t cathode = mDigit->Cathode();
+ Int_t ix = mDigit->PadX();
+ Int_t iy = mDigit->PadY();
+ const AliMpVSegmentation* seg = AliMpSegmentation::Instance()
+ ->GetMpSegmentation(currDetElemId,AliMp::GetCathodType(cathode));
- // Find a better way to get such parameters ???
- const Float_t kZFilterIn = 1471.; // From STRUCT/SHILConst2.h
- const Float_t kZFilterOut = kZFilterIn + 120.; // From STRUCT/SHILConst2.h
+ AliMpPad pad = seg->PadByIndices(ix,iy,kTRUE);
- const Float_t kZBranson = - (kZFilterIn + (kZFilterOut - kZFilterIn)*2./3. ); // - sign because distance are positive
- Float_t zDistFromWall = TMath::Abs(zChamber - kZBranson);
- Float_t zDistFromLastTrackCh = TMath::Abs(zChamber - AliMUONConstants::DefaultChamberZ(9));
-
- const TMatrixD& kCovParam = trackParam.GetCovariances();
+ if ( currDetElemId != previousDetElemId ) {
+ PosInDetElemIdLocal(localExtrap, vec11, vec21, currDetElemId);
+ previousDetElemId = currDetElemId;
+ }
- sigmaX = kCovParam(0,0);
- sigmaY = kCovParam(2,2);
+ AliDebug(11, Form("\nDetElemId = %i Cathode = %i Pad = (%i,%i) = (%.2f,%.2f) Dim = (%.2f,%.2f) Track = (%.2f,%.2f)\n",
+ currDetElemId,cathode,ix,iy,pad.GetPositionX(),pad.GetPositionY(),pad.GetDimensionX(),pad.GetDimensionY(),localExtrap.X(),localExtrap.Y()));
+ Float_t matchDist = PadMatchTrack(pad, localExtrap);
+ if ( matchDist < fkMaxDistance/2. ) padsInCheckArea[cathode]++;
+ if ( matchDist > minMatchDist[cathode] ) continue;
+ if ( pads.At(cathode) ) delete pads.RemoveAt(cathode);
+ pads.AddAt((AliMpPad*)pad.Clone(),cathode);
+ minMatchDist[cathode] = matchDist;
+ matchedDetElemId[cathode] = currDetElemId; // Set the input detection element id to the matched one
+ } // loop on digits
+
+ // If track matches many pads, it is not good for effciency determination.
+ // However we still want to calculate the hit pattern.
+ for ( Int_t cath=0; cath<2; cath++ ){
+ if ( padsInCheckArea[cath] > 2 ) {
+ AliDebug(10, Form("padsInCheckArea[%i] = %i\n",cath,padsInCheckArea[cath]));
+ return kFALSE;
+ }
+ }
+
+ return kTRUE;
+}
+
+//_____________________________________________________________________________
+Float_t AliMUONTrackHitPattern::PadMatchTrack(const AliMpPad& pad, const TVector3& trackPosAtPad) const
+{
+ //
+ /// Decides if the digit belongs to the trigger track.
+ //
+
+ Float_t xPad = pad.GetPositionX();
+ Float_t yPad = pad.GetPositionY();
+ Float_t dpx = pad.GetDimensionX();
+ Float_t dpy = pad.GetDimensionY();
+
+
+ Float_t maxDist = GetRecoParam()->GetStripCutForTrigger() * 2. * TMath::Min(dpx,dpy); // cm
+ if ( maxDist<2. ) maxDist = 2.;
+ Float_t maxDistCheckArea = GetRecoParam()->GetMaxStripAreaForTrigger() * 2. * TMath::Min(dpx,dpy); // cm
+
+ Float_t matchDist = fkMaxDistance;
- // If covariance matrix is not extrapolated, use "reasonable" errors
- // (To be removed as soon as covariance matrix is correctly propagated).
- if (sigmaX==0.)sigmaX = 0.003 * zDistFromLastTrackCh;
- if (sigmaY==0.)sigmaY = 0.004 * zDistFromLastTrackCh;
+ Float_t deltaX = TMath::Abs(xPad-trackPosAtPad.X())-dpx;
+ Float_t deltaY = TMath::Abs(yPad-trackPosAtPad.Y())-dpy;
+ Float_t maxDistX = maxDist;
+ Float_t maxDistY = maxDist;
- Float_t p = trackParam.P();
- Float_t thetaMS = kAlpha/p;
- sigmaMS = zDistFromWall * TMath::Tan(thetaMS);
+ if(deltaX<=maxDistX && deltaY<=maxDistY) matchDist = TMath::Max(deltaX, deltaY);
+ else if(deltaX<=maxDistCheckArea && deltaY<=maxDistCheckArea) matchDist = fkMaxDistance/5.;
+ return matchDist;
}
-//______________________________________________________________________________
-Bool_t
-AliMUONTrackHitPattern::TriggerDigits(const AliMUONVTriggerStore& triggerStore,
- AliMUONVDigitStore& digitStore) const
+//_____________________________________________________________________________
+Int_t AliMUONTrackHitPattern::DetElemIdFromPos(Float_t x, Float_t y,
+ Int_t chamber, Int_t foundDetElemId[2]) const
{
//
- /// make (S)Digit for trigger
+ /// Given the (x,y) position in the chamber,
+ /// it returns the corresponding slats
+ /// Caveat: at the border the result is not univoque
//
- digitStore.Clear();
+ Int_t nFound = 0;
- AliMUONLocalTrigger* locTrg;
- TIter next(triggerStore.CreateLocalIterator());
+ foundDetElemId[0] = foundDetElemId[1] = 0;
+ AliMpArea pointArea(x, y, 2.*AliMpConstants::LengthTolerance(), 2.*AliMpConstants::LengthTolerance());
+ AliMpDEIterator it;
+ for ( it.First(chamber-1); ! it.IsDone(); it.Next() ){
+ Int_t detElemId = it.CurrentDEId();
+ AliMpArea* deArea = fkTransformer.GetDEArea(detElemId);
+
+ if ( deArea->Contains(pointArea) ) {
+ foundDetElemId[nFound++] = detElemId;
+ if ( nFound == 2 ) break;
+ }
+ else if ( nFound > 0 ) break;
+ } // loop on detElemId
- while ( ( locTrg = static_cast<AliMUONLocalTrigger*>(next()) ) )
- {
- if (locTrg->IsNull()) continue;
-
- TArrayS xyPattern[2];
- locTrg->GetXPattern(xyPattern[0]);
- locTrg->GetYPattern(xyPattern[1]);
-
- // do we need this ? (Ch.F.)
-// for(Int_t cath=0; cath<2; ++cath)
-// {
-// for(Int_t ch=0; ch<4; ++ch)
-// {
-// if(xyPattern[cath][ch]==0) continue;
-// }
-// }
-
- Int_t nBoard = locTrg->LoCircuit();
- fDigitMaker.TriggerDigits(nBoard, xyPattern, digitStore);
+ return nFound;
+}
+
+
+
+//_____________________________________________________________________________
+Bool_t AliMUONTrackHitPattern::PadsFromPos(const TVector3& vec11, const TVector3& vec21,
+ Int_t detElemId, TObjArray& pads) const
+{
+ //
+ /// Given the (x,y) position in the chamber,
+ /// it returns the corresponding local board
+ //
+
+ pads.Delete();
+
+ TVector3 localCoor;
+ PosInDetElemIdLocal(localCoor, vec11, vec21, detElemId);
+ for ( Int_t icath=0; icath<2; icath++ ) {
+ const AliMpVSegmentation* seg =
+ AliMpSegmentation::Instance()
+ ->GetMpSegmentation(detElemId,AliMp::GetCathodType(icath));
+ AliMpPad pad = seg->PadByPosition(localCoor.X(),localCoor.Y(),kFALSE);
+ if ( pad.IsValid() ) {
+ pads.AddAt(pad.Clone(), icath);
+ }
}
+
+ return pads.GetEntries();
+}
+
+
+//_____________________________________________________________________________
+Bool_t AliMUONTrackHitPattern::IsCloseToAccEdge(TObjArray& pads, Int_t detElemId, Float_t coor[2]) const
+{
+ AliMpArea* deArea = fkTransformer.GetDEArea(detElemId);
+ Float_t dpx = ((AliMpPad*)pads.At(1))->GetDimensionX();
+ Float_t dpy = ((AliMpPad*)pads.At(0))->GetDimensionY();
+ Float_t resolution[2] = { 0.75*dpx, 0.75*dpy };
+ Float_t sign[3] = {0., 1., -1.};
+ for ( Int_t ineighx=0; ineighx<3; ineighx++ ) {
+ for ( Int_t ineighy=0; ineighy<3; ineighy++ ) {
+ AliMpArea pointArea(coor[0]+sign[ineighx]*resolution[0],
+ coor[1]+sign[ineighy]*resolution[1],
+ 2.*AliMpConstants::LengthTolerance(),
+ 2.*AliMpConstants::LengthTolerance());
+ if ( ! deArea->Contains(pointArea) ) return kTRUE;
+ } // loop on y neighbours
+ } // loop on x neighbours
+ return kFALSE;
+}
+
+
+//_____________________________________________________________________________
+Bool_t AliMUONTrackHitPattern::IsMasked(const AliMpPad& pad, Int_t detElemId, Int_t cathode, const TVector3& vec11, const TVector3& vec21) const
+{
+ //
+ /// Check if pad or its neighbours are masked
+ //
+
+ Int_t nMasked = 0;
+
+ if ( fkTriggerUtilities->IsMasked(pad, detElemId, cathode) ) ++nMasked;
+
+ // Check closest neighbour
+
+ TVector3 localCoor;
+ PosInDetElemIdLocal(localCoor, vec11, vec21, detElemId);
+
+ Float_t padPos[2] = { pad.GetPositionX(), pad.GetPositionY()};
+ Float_t padDim[2] = { pad.GetDimensionX(), pad.GetDimensionY()};
+ Float_t inpactPos[2] = { localCoor.X(), localCoor.Y()};
+ Float_t sign[2] = {-1., 1.};
+ Int_t icoor = 1-cathode;
+ Int_t addSlatSign[3] = {0,1,-1};
+ Int_t inputCh = AliMpDEManager::GetChamberId(detElemId)+1;
+ Int_t inputSlat = detElemId%100;
+
+ Float_t newPos[2];
+ for ( Int_t ineigh=0; ineigh<2; ineigh++ ) {
+ newPos[1-icoor] = inpactPos[1-icoor];
+ newPos[icoor] = inpactPos[icoor] + 1.05 * sign[ineigh] * padDim[icoor];
+ if ( TMath::Abs(newPos[icoor] - padPos[icoor]) < padDim[icoor] ) continue;
+ const AliMpVSegmentation* seg =
+ AliMpSegmentation::Instance()->GetMpSegmentation(detElemId,AliMp::GetCathodType(cathode));
+ AliMpPad neighPad = seg->PadByPosition(newPos[0],newPos[1],kFALSE);
+ if ( neighPad.IsValid() ) {
+ if ( fkTriggerUtilities->IsMasked(neighPad, detElemId, cathode) ) ++nMasked;
+ }
+ else {
+ TVector3 deltaVec(newPos[0]-inpactPos[0],newPos[1]-inpactPos[1],0.);
+ TVector3 transVec11 = vec11+deltaVec;
+ TVector3 transVec21 = vec21+deltaVec;
+ TObjArray padsFromPos;
+ padsFromPos.SetOwner();
+ for ( Int_t iAddSlat=0; iAddSlat<2; iAddSlat++ ) {
+ Int_t currSlat = (inputSlat + addSlatSign[iAddSlat])%18;
+ Int_t currDetElemId = 100 * inputCh + currSlat;
+ PadsFromPos(transVec11,transVec21,currDetElemId,padsFromPos);
+ AliMpPad* currPad = (AliMpPad*)padsFromPos.UncheckedAt(cathode);
+ Bool_t isMasked = ( currPad ) ? fkTriggerUtilities->IsMasked(*currPad, currDetElemId, cathode) : kFALSE;
+ padsFromPos.Delete();
+ if ( isMasked ) ++nMasked;
+ }
+ } // loop on slats
+ } // loop on neigbours
+
+ Double_t maskedProb = ((Double_t)nMasked)/3.;
+ if ( gRandom->Rndm() < maskedProb ) return kTRUE;
+
+ return kFALSE;
+}
+
+
+//_____________________________________________________________________________
+Bool_t AliMUONTrackHitPattern::PerformTrigTrackMatch(UInt_t &pattern,
+ const AliMUONTriggerTrack* matchedTrigTrack) const
+{
+ //
+ /// It searches for matching digits around the trigger track.
+ //
+
+ AliCodeTimerAuto("",0);
+
+ enum {kBending, kNonBending};
+
+ TArrayF zMeanChamber(AliMUONConstants::NTriggerCh());
+ zMeanChamber[0] = matchedTrigTrack->GetZ11();
+ zMeanChamber[1] = matchedTrigTrack->GetZ11() + AliMUONConstants::DefaultChamberZ(11) - AliMUONConstants::DefaultChamberZ(10);
+ zMeanChamber[2] = matchedTrigTrack->GetZ21();
+ zMeanChamber[3] = matchedTrigTrack->GetZ21() + AliMUONConstants::DefaultChamberZ(13) - AliMUONConstants::DefaultChamberZ(12);
+
+ TArrayI digitPerTrack(2);
+ digitPerTrack.Reset();
+
+ Float_t trackIntersectCh[2];
+
+ Float_t slopeX = matchedTrigTrack->GetSlopeX();
+ Float_t slopeY = matchedTrigTrack->GetSlopeY();
+
+ Float_t z11 = matchedTrigTrack->GetZ11();
+ Float_t x11 = slopeX * z11;
+ Float_t y11 = matchedTrigTrack->GetY11();
+ Float_t z21 = matchedTrigTrack->GetZ21();
+ Float_t x21 = slopeX * z21;
+ Float_t y21 = y11 + slopeY * (z21-z11);
+ TVector3 vec11(x11, y11, z11), vec21(x21, y21, z21);
+
+ Int_t firstSlat = -1, firstBoard = -1;
+ AliESDMuonTrack::EAliTriggerChPatternFlag goodForEff = AliESDMuonTrack::kBoardEff;
+ TObjArray matchedPads(2), padsFromPos(2), validPads(2);
+ matchedPads.SetOwner(); padsFromPos.SetOwner();
+ Int_t matchedDetElemId[2], detElemIdFromTrack[2];
+
+ for(Int_t ich=0; ich<AliMUONConstants::NTriggerCh(); ich++) { // chamber loop
+
+ // searching track intersection with chambers (first approximation)
+ Float_t deltaZ = zMeanChamber[ich] - zMeanChamber[0];
+ trackIntersectCh[0] = zMeanChamber[ich] * slopeX;
+ trackIntersectCh[1] = y11 + deltaZ * slopeY;
+ Int_t nFound = DetElemIdFromPos(trackIntersectCh[0], trackIntersectCh[1], 11+ich, detElemIdFromTrack);
+ if ( nFound == 0 ) {
+ // track is rejected since the extrapolated track
+ // does not match a slat (border effects)
+ AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackOutsideGeometry);
+ goodForEff = AliESDMuonTrack::kNoEff;
+ AliDebug(10, "Warning: trigger track outside trigger chamber\n");
+ continue;
+ }
+
+ matchedDetElemId[0] = matchedDetElemId[1] = detElemIdFromTrack[0];
+
+ if ( ! FindPadMatchingTrig(vec11, vec21, matchedDetElemId, matchedPads) ) {
+ // if ! FindPadMatchingTrig => too many digits matching pad =>
+ // => Event not clear => Do not use for efficiency calculation
+ AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackMatchesManyPads);
+ goodForEff = AliESDMuonTrack::kNoEff;
+ AliDebug(10, Form("Warning: track = %p (%i) matches many pads. Rejected!\n",(void *)matchedTrigTrack, matchedDetElemId[0]));
+ }
+
+ Int_t nMatched = 0;
+
+ Int_t mostProbDEmatched = detElemIdFromTrack[0];
+ for ( Int_t icath=0; icath<2; icath++ ) {
+ if ( matchedPads.UncheckedAt(icath) ) {
+ nMatched++;
+ // Fill pattern anyway
+ AliESDMuonTrack::SetFiredChamber(pattern, icath, ich);
+ digitPerTrack[icath]++;
+ mostProbDEmatched = matchedDetElemId[icath];
+ }
+ }
+ Int_t mostProbDEfromTrack = detElemIdFromTrack[0];
+ for ( Int_t ifound=0; ifound<nFound; ifound++ ) {
+ if ( detElemIdFromTrack[ifound] == mostProbDEmatched ) {
+ mostProbDEfromTrack = mostProbDEmatched;
+ break;
+ }
+ }
+
+ if ( goodForEff == AliESDMuonTrack::kNoEff ) continue;
+
+ if ( nMatched < 2 ) PadsFromPos(vec11, vec21, mostProbDEfromTrack, padsFromPos);
+
+ for ( Int_t cath=0; cath<2; cath++ ) {
+ if ( matchedPads.UncheckedAt(cath) ) validPads.AddAt(matchedPads.UncheckedAt(cath),cath);
+ else if ( padsFromPos.UncheckedAt(cath) ) {
+ AliMpPad* currPad = (AliMpPad*)padsFromPos.UncheckedAt(cath);
+ validPads.AddAt(currPad,cath);
+ if ( IsMasked(*currPad, mostProbDEfromTrack, cath, vec11, vec21) ) {
+ // Check if strip was masked (if inefficient strip is found)
+ AliESDMuonTrack::AddEffInfo(pattern,AliESDMuonTrack::kTrackMatchesMasks); // pad is masked
+ AliDebug(10,Form("DetElemId %i cath %i board %i strip %i is masked: effFlag 0", mostProbDEfromTrack, cath, currPad->GetLocalBoardId(0), currPad->GetLocalBoardChannel(0)));
+ goodForEff = AliESDMuonTrack::kNoEff;
+ }
+ }
+ else goodForEff = AliESDMuonTrack::kNoEff;
+ } // loop on cathodes
+
+ if ( goodForEff != AliESDMuonTrack::kNoEff ) {
+
+ if ( nMatched == 0 && IsCloseToAccEdge(padsFromPos, mostProbDEfromTrack, trackIntersectCh) ) {
+ // Non of cathodes is fired.
+ // If we are close to the edge of the RPC
+ // it could be a problem of acceptance
+ AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackOutsideGeometry);
+ goodForEff = AliESDMuonTrack::kNoEff;
+ AliDebug(10, "Warning: trigger track at the edge of the chamber\n");
+ }
+
+ Int_t currSlat = mostProbDEmatched%100;
+ if ( firstSlat < 0 ) firstSlat = currSlat;
+ else if ( currSlat != firstSlat ) {
+ goodForEff = AliESDMuonTrack::kChEff;
+ firstSlat = AliESDMuonTrack::kCrossDifferentSlats;
+ }
+
+ if ( firstBoard < 0 ) firstBoard = ((AliMpPad*)validPads[kBending])->GetLocalBoardId(0);
+
+ for ( Int_t cath=0; cath<2; cath++ ){
+
+ if ( goodForEff == AliESDMuonTrack::kBoardEff) {
+ Bool_t atLeastOneLoc = kFALSE;
+ AliMpPad* currPad = (AliMpPad*)validPads.UncheckedAt(cath);
+ for ( Int_t iloc=0; iloc<currPad->GetNofLocations(); iloc++) {
+ if ( currPad->GetLocalBoardId(iloc) == firstBoard ) {
+ atLeastOneLoc = kTRUE;
+ break;
+ }
+ } // loop on locations
+ if ( ! atLeastOneLoc ) goodForEff = AliESDMuonTrack::kSlatEff;
+ }
+ } // loop on cathodes
+ } // if track good for efficiency
+ matchedPads.Delete();
+ padsFromPos.Delete();
+ } // end chamber loop
+
+ if ( goodForEff == AliESDMuonTrack::kNoEff ) return kFALSE;
+
+ for(Int_t cath=0; cath<2; cath++){
+ if(digitPerTrack[cath]<3) {
+ // track is rejected since the number of associated
+ // digits found is less than 3.
+ AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackMatchesFewPads);
+ goodForEff = AliESDMuonTrack::kNoEff;
+ AliDebug(10, Form("Warning: found %i digits for trigger track cathode %i.\nRejecting event\n", digitPerTrack[cath],cath));
+ }
+ } // loop on cathodes
+
+ if ( goodForEff == AliESDMuonTrack::kNoEff ) return kFALSE;
+
+ AliESDMuonTrack::AddEffInfo(pattern, firstSlat, firstBoard, goodForEff);
return kTRUE;
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff