* provided "as is" without express or implied warranty. *
**************************************************************************/
-////////////////////////////////////
-///
+/* $Id$ */
+
+
+//-----------------------------------------------------------------------------
/// \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 "AliMUONRecData.h"
-#include "AliMUONTrack.h"
-#include "AliMUONTrackParam.h"
-#include "AliMUONTrackExtrap.h"
+
#include "AliMUONConstants.h"
+#include "AliMUONVDigit.h"
+#include "AliMUONVDigitStore.h"
#include "AliMUONGeometryTransformer.h"
-#include "AliMUONDigit.h"
#include "AliMUONLocalTrigger.h"
-#include "AliMUONTriggerCrateStore.h"
#include "AliMUONLocalTriggerBoard.h"
-#include "AliMUONTriggerCircuit.h"
-#include "AliMUONDigitMaker.h"
-
+#include "AliMUONRecoParam.h"
+#include "AliMUONTrack.h"
+#include "AliMUONTrackExtrap.h"
+#include "AliMUONTrackParam.h"
+#include "AliMUONVTrackStore.h"
+#include "AliMUONVTriggerStore.h"
#include "AliMpPad.h"
-#include "AliMpVSegmentation.h"
#include "AliMpSegmentation.h"
+#include "AliMpVSegmentation.h"
+#include "AliMpDEManager.h"
+#include "AliMUONReconstructor.h"
+#include "AliMUONTriggerTrack.h"
+#include "AliMUONVTriggerTrackStore.h"
+
+#include "AliMpConstants.h"
#include "AliLog.h"
#include "AliTracker.h"
-#include "AliMagF.h"
+#include "AliESDMuonTrack.h"
#include <Riostream.h>
+#include <TArrayS.h>
#include <TClonesArray.h>
#include <TMath.h>
#include <TMatrixD.h>
-#include <TArrayS.h>
+#include <TROOT.h>
+#include <TDirectory.h>
+#include <TFile.h>
+#include <TSystem.h>
+#include <TVector2.h>
+
+#include <cassert>
/// \cond CLASSIMP
ClassImp(AliMUONTrackHitPattern) // Class implementation in ROOT context
//______________________________________________________________________________
-AliMUONTrackHitPattern::AliMUONTrackHitPattern(AliMUONRecData *data)
- : TObject(),
- fMUONData(data),
- fTransformer(new AliMUONGeometryTransformer(kTRUE)),
- fCrateManager(new AliMUONTriggerCrateStore()),
- fDigitMaker(new AliMUONDigitMaker())
+AliMUONTrackHitPattern::AliMUONTrackHitPattern(const AliMUONRecoParam* recoParam,
+ const AliMUONGeometryTransformer& transformer,
+ const AliMUONVDigitStore& digitStore)
+: TObject(),
+fkRecoParam(recoParam),
+fkTransformer(transformer),
+fkDigitStore(digitStore),
+fkMaxDistance(99999.)
{
/// Default constructor
+ AliMUONTrackExtrap::SetField();
+}
- // Set magnetic field
- const AliMagF* kField = AliTracker::GetFieldMap();
- if (!kField) AliFatal("No field available");
- AliMUONTrackExtrap::SetField(kField);
-
- // Geometry transformer
- fTransformer->ReadGeometryData("volpath.dat", "geometry.root");
- // Crate manager to retrieve local boards
- fCrateManager->ReadFromFile();
+//______________________________________________________________________________
+AliMUONTrackHitPattern::~AliMUONTrackHitPattern(void)
+{
+ /// Destructor
+}
- // set to digit maker
- fDigitMaker->SetCrateManager(fCrateManager);
+//_____________________________________________________________________________
+void AliMUONTrackHitPattern::CheckConstants() const
+{
+/// Check consistence of redefined constants
- for(Int_t ch=0; ch<4; ch++){
- fTriggerDigitsList[ch].Clear();
- }
+ assert(fgkNcathodes == AliMpConstants::NofCathodes());
+ assert(fgkNchambers == AliMpConstants::NofTriggerChambers());
+ assert(fgkNplanes == AliMpConstants::NofTriggerChambers() * fgkNcathodes);
}
//______________________________________________________________________________
-AliMUONTrackHitPattern::~AliMUONTrackHitPattern(void)
+void AliMUONTrackHitPattern::ExecuteValidation(const AliMUONVTrackStore& trackStore,
+ const AliMUONVTriggerTrackStore& triggerTrackStore,
+ const AliMUONVTriggerStore& triggerStore) const
{
-/// Destructor
- for(Int_t ch=0; ch<4; ch++){
- fTriggerDigitsList[ch].Delete();
- }
- delete fCrateManager;
+ //
+ /// 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() ) ) ){
+ UShort_t pattern = GetHitPattern(triggerTrack);
+ triggerTrack->SetHitsPatternInTrigCh(pattern);
+ AliDebug(1, Form("Hit pattern: 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);
+
+ // Copy trigger tracks hit pattern if there is matching,
+ // otherwise calculate the hit pattern directly from tracker track:
+ // the obtained pattern is good for check, but not good for efficiency determination.
+ UShort_t pattern = matchedTriggerTrack ?
+ matchedTriggerTrack->GetHitsPatternInTrigCh() :
+ GetHitPattern(&trackParam);
+
+ track->SetHitsPatternInTrigCh(pattern);
+ }
}
//______________________________________________________________________________
-void AliMUONTrackHitPattern::GetHitPattern(TClonesArray *recTracksPtr)
+AliMUONTriggerTrack *
+AliMUONTrackHitPattern::MatchTriggerTrack(AliMUONTrack* track,
+ AliMUONTrackParam& trackParam,
+ const AliMUONVTriggerTrackStore& triggerTrackStore,
+ const AliMUONVTriggerStore& triggerStore) const
{
- //
- /// Main method:
- /// Loops on reco tracks, extrapolates them to trigger chambers
- /// and searches for matching digits
- //
+ //
+ /// 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;
- const Int_t kMask[2][4]={{0x80, 0x40, 0x20, 0x10},
- {0x08, 0x04, 0x02, 0x01}};
- Bool_t isMatch[2];
- UShort_t pattern=0;
- TriggerDigits();
- Int_t nRecTracks = (Int_t)recTracksPtr->GetEntriesFast();
- for(Int_t iTrack=0; iTrack<nRecTracks; iTrack++){
- pattern = 0;
- AliMUONTrack *muonTrack = (AliMUONTrack*) recTracksPtr->At(iTrack);
- AliMUONTrackParam *trackParam = (AliMUONTrackParam*) ((muonTrack->GetTrackParamAtHit())->Last());
- for(Int_t ch=0; ch<4; ch++){
- AliMUONTrackExtrap::ExtrapToZCov(trackParam, AliMUONConstants::DefaultChamberZ(10+ch));
- FindPadMatchingTrack(trackParam, isMatch, ch);
- for(Int_t cath=0; cath<2; cath++){
- if(isMatch[cath]) pattern |= kMask[cath][ch];
- }
+
+ // 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();
+
+ 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())
+ {
+ if(isDoubleTrack)
+ {
+ doubleMatch = loTrgNum;
+ doubleChi2 = chi2MatchTrigger;
+ doubleTriggerTrack = matchedTriggerTrack;
}
- muonTrack->SetHitsPatternInTrigCh(pattern);
+ 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;
+ }
+ 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;
}
- return;
+ }
+
+ 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;
}
//______________________________________________________________________________
-void AliMUONTrackHitPattern::FindPadMatchingTrack(AliMUONTrackParam *trackParam,
- Bool_t isMatch[2], Int_t iChamber)
+UShort_t AliMUONTrackHitPattern::GetHitPattern(AliMUONTriggerTrack* matchedTriggerTrack) const
{
- //
- /// Given track position, searches for matching digits.
- //
+ //
+ /// Get hit pattern on trigger chambers for the current trigger track
+ //
+ UShort_t pattern = 0;
+ PerformTrigTrackMatch(pattern, matchedTriggerTrack);
+ return pattern;
+}
- Float_t minMatchDist[2];
- for(Int_t cath=0; cath<2; cath++){
- isMatch[cath]=kFALSE;
- minMatchDist[cath]=9999.;
+//______________________________________________________________________________
+UShort_t AliMUONTrackHitPattern::GetHitPattern(AliMUONTrackParam* trackParam) const
+{
+ //
+ /// Get hit pattern on trigger chambers for the current tracker track
+ //
+ UShort_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);
}
+ }
- Int_t ndigits = (Int_t)fTriggerDigitsList[iChamber].GetEntries();
- AliMUONDigit * mDigit = 0x0;
- for(Int_t idigit=0; idigit<ndigits; idigit++) { // digit loop
- mDigit = (AliMUONDigit*)fTriggerDigitsList[iChamber].At(idigit);
- Int_t currDetElemId = mDigit->DetElemId();
+ // pattern obtained by propagation of tracker track
+ // when it does not match the trigger.
+ AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackerTrackPattern);
- Int_t cathode = mDigit->Cathode();
- Int_t ix = mDigit->PadX();
- Int_t iy = mDigit->PadY();
- Float_t xpad, ypad, zpad;
- const AliMpVSegmentation* seg = AliMpSegmentation::Instance()
- ->GetMpSegmentation(currDetElemId,AliMp::GetCathodType(cathode));
+ return pattern;
+}
- 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);
- Float_t matchDist = MinDistanceFromPad(xpad, ypad, zpad, dpx, dpy, trackParam);
- if(matchDist>minMatchDist[cathode])continue;
- isMatch[cathode] = kTRUE;
- minMatchDist[cathode] = matchDist;
+//______________________________________________________________________________
+void
+AliMUONTrackHitPattern::ApplyMCSCorrections(AliMUONTrackParam& trackParam) const
+{
+ //
+ /// 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::FindPadMatchingTrack(const AliMUONTrackParam& trackParam,
+ Bool_t isMatch[2], Int_t iChamber) const
+{
+ //
+ /// 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]=fkMaxDistance/10.;
}
- return;
+ 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();
+ Float_t xpad, ypad, zpad;
+ const AliMpVSegmentation* seg = AliMpSegmentation::Instance()
+ ->GetMpSegmentation(currDetElemId,AliMp::GetCathodType(cathode));
+
+ 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;
+ }
}
//______________________________________________________________________________
-Float_t AliMUONTrackHitPattern::MinDistanceFromPad(Float_t xPad, Float_t yPad, Float_t zPad,
- Float_t dpx, Float_t dpy, AliMUONTrackParam *trackParam)
+Float_t
+AliMUONTrackHitPattern::MinDistanceFromPad(Float_t xPad, Float_t yPad, Float_t zPad,
+ Float_t dpx, Float_t dpy,
+ 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 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 = 3.*(sigmaX + sigmaMS); // in cm
- Float_t maxDistY = 3.*(sigmaY + sigmaMS); // in cm
+ 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(AliMUONTrackParam *trackParam, Float_t zChamber,
- Float_t &sigmaX, Float_t &sigmaY, Float_t &sigmaMS)
+//_____________________________________________________________________________
+Int_t AliMUONTrackHitPattern::FindPadMatchingTrig(Int_t &detElemId,
+ Float_t coor[2], Bool_t isMatch[2],
+ TArrayI nboard[2], TArrayF &zRealMatch, Float_t y11) const
{
//
- /// Returns uncertainties on extrapolated position.
- /// Takes into account Branson plane corrections in the iron wall.
+ /// Check slat and board number of digit matching trigger track
//
- const Float_t kAlpha = 0.1123; // GeV/c
-
- // 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
-
- 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));
+ enum {kBending, kNonBending};
- TMatrixD *covParam = trackParam->GetCovariances();
+ Float_t minMatchDist[fgkNcathodes];
+ Int_t padsInCheckArea[fgkNcathodes];
+
+ for(Int_t cath=0; cath<fgkNcathodes; cath++){
+ isMatch[cath] = kFALSE;
+ minMatchDist[cath] = fkMaxDistance/10.;
+ padsInCheckArea[cath] = 0;
+ }
+ Int_t iChamber = AliMpDEManager::GetChamberId(detElemId);
+ Int_t ch = iChamber-10;
+ Float_t oldDeltaZ = AliMUONConstants::DefaultChamberZ(iChamber) - AliMUONConstants::DefaultChamberZ(10);
+ Float_t y = coor[1];
+ Int_t iSlat = detElemId%100;
+ Int_t trigDigitBendPlane = -1;
+ Int_t foundDetElemId = detElemId;
+ Float_t foundZmatch=999.;
+ Float_t yCoorAtPadZ=999.;
+
+ TIter next(fkDigitStore.CreateTriggerIterator());
+ AliMUONVDigit* mDigit;
+ Int_t idigit=0;
- sigmaX = (*covParam)(0,0);
- sigmaY = (*covParam)(2,2);
+ while ( ( mDigit = static_cast<AliMUONVDigit*>(next()) ) )
+ {
+ idigit++;
+ 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();
+ Float_t xpad, ypad, zpad;
+ const AliMpVSegmentation* seg = AliMpSegmentation::Instance()
+ ->GetMpSegmentation(currDetElemId,AliMp::GetCathodType(cathode));
- // 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;
+ 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);
+ AliDebug(2, Form("\nDetElemId = %i Cathode = %i Pad = (%i,%i) = (%.2f,%.2f) Dim = (%.2f,%.2f) Track = (%.2f,%.2f)\n",currDetElemId,cathode,ix,iy,xpad,ypad,dpx,dpy,coor[0],coor[1]));
+ // searching track intersection with chambers (second approximation)
+ if(ch%2==1){
+ //if(iChamber%2==1){
+ Float_t deltaZ = zpad - zRealMatch[0];
+ y = (coor[1]-y11)*deltaZ/oldDeltaZ + y11;
+ if(TMath::Abs(y-coor[1])>0.1) AliDebug(3, Form("oldDeltaZ = %7.2f newDeltaZ = %7.2f\toldY = %7.2f new y = %7.2f\n",oldDeltaZ,deltaZ,coor[1],y));
+ }
+ Float_t matchDist = PadMatchTrack(xpad, ypad, dpx, dpy, coor[0], y);
+ if(matchDist<fkMaxDistance/2.) padsInCheckArea[cathode]++;
+ if(matchDist>minMatchDist[cathode])continue;
+ isMatch[cathode] = kTRUE;
+ minMatchDist[cathode] = matchDist;
+ foundDetElemId = currDetElemId;
+ foundZmatch=zpad;
+ yCoorAtPadZ=y;
+ if(cathode==kBending) trigDigitBendPlane = idigit;
+ for (Int_t loc=0; loc<pad.GetNofLocations(); loc++){
+ nboard[cathode][loc] = pad.GetLocalBoardId(loc);
+ }
+ for(Int_t loc=pad.GetNofLocations(); loc<fgkNlocations; loc++){
+ nboard[cathode][loc]=-1;
+ }
+ }
+
+ if(isMatch[kBending] || isMatch[kNonBending]){
+ detElemId = foundDetElemId;
+ zRealMatch[ch] = foundZmatch;
+ coor[1] = yCoorAtPadZ;
+ }
- Float_t p = trackParam->P();
- Float_t thetaMS = kAlpha/p;
- sigmaMS = zDistFromWall * TMath::Tan(thetaMS);
+ // 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<fgkNcathodes; cath++){
+ if(padsInCheckArea[cath]>2) {
+ AliDebug(1, Form("padsInCheckArea[%i] = %i\n",cath,padsInCheckArea[cath]));
+ return -500;
+ }
+ }
- return;
+ return trigDigitBendPlane;
}
-
-//____________________________________________________________________
-Bool_t AliMUONTrackHitPattern::TriggerDigits()
+//_____________________________________________________________________________
+Float_t AliMUONTrackHitPattern::PadMatchTrack(Float_t xPad, Float_t yPad,
+ Float_t dpx, Float_t dpy,
+ Float_t xTrackAtPad, Float_t yTrackAtPad) const
{
//
- /// make (S)Digit for trigger
+ /// Decides if the digit belongs to the trigger track.
//
- for(Int_t ch=0; ch<4; ++ch) fTriggerDigitsList[ch].Clear();
+ 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
- Int_t nBoard;
+ Float_t matchDist = fkMaxDistance;
- TList digitList;
-
- digitList.Clear();
-
- AliMUONLocalTrigger *locTrg = 0x0;
+ Float_t deltaX = TMath::Abs(xPad-xTrackAtPad)-dpx;
+ Float_t deltaY = TMath::Abs(yPad-yTrackAtPad)-dpy;
+ Float_t maxDistX = maxDist;
+ Float_t maxDistY = maxDist;
- fMUONData->SetTreeAddress("RC,TC");
- fMUONData->GetTrigger();
+ if(deltaX<=maxDistX && deltaY<=maxDistY) matchDist = TMath::Max(deltaX, deltaY);
+ else if(deltaX<=maxDistCheckArea && deltaY<=maxDistCheckArea) matchDist = fkMaxDistance/5.;
+ return matchDist;
+}
- TClonesArray *localTrigger = fMUONData->LocalTrigger();
- Int_t nLocTrig = (Int_t) localTrigger->GetEntriesFast();
- for(Int_t iLoc=0; iLoc<nLocTrig; iLoc++) {
- locTrg = (AliMUONLocalTrigger*)localTrigger->UncheckedAt(iLoc);
+//_____________________________________________________________________________
+Int_t AliMUONTrackHitPattern::DetElemIdFromPos(Float_t x, Float_t y,
+ Int_t chamber, Int_t cathode) const
+{
+ //
+ /// Given the (x,y) position in the chamber,
+ /// it returns the corresponding slat
+ //
- TArrayS xyPattern[2];
- xyPattern[0].Set(4);
- xyPattern[1].Set(4);
+ Int_t resultingDetElemId = -1;
+ AliMpDEIterator it;
+ Float_t minDist = 999.;
+ for ( it.First(chamber-1); ! it.IsDone(); it.Next() ){
+ Int_t detElemId = it.CurrentDEId();
+ Int_t ich = detElemId/100-10;
+ Float_t tolerance=0.2*((Float_t)ich);
+ Float_t currDist=9999.;
+
+ const AliMpVSegmentation* seg =
+ AliMpSegmentation::Instance()
+ ->GetMpSegmentation(detElemId,AliMp::GetCathodType(cathode));
+ if (!seg) continue;
+
+ Float_t deltax = seg->GetDimensionX();
+ Float_t deltay = seg->GetDimensionY();
+ Float_t xlocal1 = -deltax;
+ Float_t ylocal1 = -deltay;
+ Float_t xlocal2 = +deltax;
+ Float_t ylocal2 = +deltay;
+ Float_t xg01, yg01, zg1, xg02, yg02, zg2;
+ fkTransformer.Local2Global(detElemId, xlocal1, ylocal1, 0, xg01, yg01, zg1);
+ fkTransformer.Local2Global(detElemId, xlocal2, ylocal2, 0, xg02, yg02, zg2);
+
+ Float_t xg1 = xg01, xg2 = xg02, yg1 = yg01, yg2 = yg02;
+
+ if(xg01>xg02){
+ xg1 = xg02;
+ xg2 = xg01;
+ }
+ if(yg01>yg02){
+ yg1 = yg02;
+ yg2 = yg01;
+ }
- xyPattern[0].AddAt(locTrg->GetX1Pattern(),0);
- xyPattern[0].AddAt(locTrg->GetX2Pattern(),1);
- xyPattern[0].AddAt(locTrg->GetX3Pattern(),2);
- xyPattern[0].AddAt(locTrg->GetX4Pattern(),3);
+ if(x>=xg1-tolerance && x<=xg2+tolerance && y>=yg1-tolerance && y<=yg2+tolerance){ // takes into account errors in extrapolation
+ if(y<yg1) currDist = yg1-y;
+ else if(y>yg2) currDist = y-yg2;
+ if(currDist<minDist) {
+ resultingDetElemId = detElemId;
+ minDist=currDist;
+ continue;
+ }
+ resultingDetElemId = detElemId;
+ break;
+ }
+ } // loop on detElemId
+ return resultingDetElemId;
+}
- xyPattern[1].AddAt(locTrg->GetY1Pattern(),0);
- xyPattern[1].AddAt(locTrg->GetY2Pattern(),1);
- xyPattern[1].AddAt(locTrg->GetY3Pattern(),2);
- xyPattern[1].AddAt(locTrg->GetY4Pattern(),3);
- for(Int_t cath=0; cath<2; cath++){
- for(Int_t ch=0; ch<4; ch++){
- if(xyPattern[cath][ch]==0) continue;
- }
- }
+//_____________________________________________________________________________
+void AliMUONTrackHitPattern::LocalBoardFromPos(Float_t x, Float_t y,
+ Int_t detElemId, Int_t cathode,
+ Int_t localBoard[4]) const
+{
+ //
+ /// Given the (x,y) position in the chamber,
+ /// it returns the corresponding local board
+ //
- nBoard = locTrg->LoCircuit();
- fDigitMaker->TriggerDigits(nBoard, xyPattern, digitList);
+ for(Int_t loc=0; loc<fgkNlocations; loc++){
+ localBoard[loc]=-1;
+ }
+ Float_t xg, yg, zg;
+ fkTransformer.Local2Global(detElemId, 0., 0., 0., xg, yg, zg);
+ Float_t z = zg - (y-yg)*TMath::Tan(TMath::DegToRad()*AliMUONConstants::St345Inclination());
+ Float_t xl, yl, zl;
+ fkTransformer.Global2Local(detElemId, x, y, z, xl, yl, zl);
+ const AliMpVSegmentation* seg =
+ AliMpSegmentation::Instance()
+ ->GetMpSegmentation(detElemId,AliMp::GetCathodType(cathode));
+ if ( ! seg ) return;
+ AliMpPad pad = seg->PadByPosition(xl,yl,kFALSE);
+ if ( ! pad.IsValid() ){
+ AliWarning(Form("Pad not found! DetElemId %i position global (%f, %f, %f) local (%f, %f, %f)\n", detElemId, x, y, z, xl, yl, zl));
+ return;
+ }
+ AliDebug(2, Form("\nWould match: DetElemId = %i Pad = (%i,%i) = (%.2f,%.2f,%.2f) Board %3i\n",detElemId,pad.GetIx(),pad.GetIy(),xl,yl,zl,pad.GetLocalBoardId(0)));
- } // loop on localTriggers
+ for (Int_t loc=0; loc<pad.GetNofLocations(); loc++){
+ localBoard[loc] = pad.GetLocalBoardId(loc);
+ }
+}
- for (Int_t iEntry = 0; iEntry < digitList.GetEntries(); ++iEntry) {
- AliMUONDigit* digit = (AliMUONDigit*)digitList.At(iEntry);
- Int_t detElemId = digit->DetElemId();
- Int_t iChamber = detElemId/100 - 11; //FIXEME should be given by mapping
- fTriggerDigitsList[iChamber].Add(digit);
+//_____________________________________________________________________________
+Bool_t AliMUONTrackHitPattern::PerformTrigTrackMatch(UShort_t &pattern,
+ const AliMUONTriggerTrack* matchedTrigTrack) const
+{
+ //
+ /// It searches for matching digits around the trigger track.
+ //
+
+ enum {kBending, kNonBending};
+
+ Int_t chOrder[fgkNchambers] = {0,2,1,3};
+
+ TArrayF zRealMatch(fgkNchambers);
+
+ Bool_t isMatch[fgkNcathodes];
+ for(Int_t cath=0; cath<fgkNcathodes; cath++){
+ isMatch[cath] = kFALSE;
+ }
+
+ TArrayF zMeanChamber(fgkNchambers);
+ 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(fgkNcathodes);
+
+ Float_t trackIntersectCh[fgkNchambers][fgkNcathodes];
+
+ TArrayI triggeredDigits;
+ triggeredDigits.Set(fgkNchambers);
+ triggeredDigits.Reset(-1);
+
+ TArrayI trigScheme[fgkNcathodes];
+ TArrayI slatThatTriggered[fgkNcathodes];
+ for(Int_t cath=0; cath<fgkNcathodes; cath++){
+ trigScheme[cath].Set(fgkNchambers);
+ slatThatTriggered[cath].Set(fgkNchambers);
+ }
+
+ Int_t boardThatTriggered[fgkNchambers][fgkNcathodes][fgkNlocations];
+ TArrayI nboard[fgkNcathodes];
+ for(Int_t cath=0; cath<fgkNcathodes; cath++){
+ nboard[cath].Set(fgkNlocations);
+ }
+ Int_t ineffBoard[fgkNlocations];
+ for(Int_t loc=0; loc<fgkNlocations; loc++){
+ ineffBoard[loc] = -1;
+ }
+
+ digitPerTrack.Reset();
+ for(Int_t ch=0; ch<fgkNchambers; ch++){
+ zRealMatch[ch] = zMeanChamber[ch];
+ for(Int_t cath=0; cath<fgkNcathodes; cath++){
+ for(Int_t loc=0; loc<fgkNlocations; loc++){
+ boardThatTriggered[ch][cath][loc]=-1;
+ }
+ }
+ }
+
+ for(Int_t cath=0; cath<fgkNcathodes; cath++){
+ slatThatTriggered[cath].Reset(-1);
+ trigScheme[cath].Reset();
+ }
+
+ Bool_t isClearEvent = kTRUE;
+
+ Float_t y11 = matchedTrigTrack->GetY11();// y position (info from bending plane)
+ Float_t slopeX = matchedTrigTrack->GetSlopeX();
+ Float_t slopeY = matchedTrigTrack->GetSlopeY();
+
+ for(Int_t ch=0; ch<fgkNchambers; ch++) { // chamber loop
+ Int_t currCh = chOrder[ch];
+ AliDebug(3, Form("zMeanChamber[%i] = %.2f\tzRealMatch[0] = %.2f\n",currCh,zMeanChamber[currCh],zRealMatch[0]));
+
+ // searching track intersection with chambers (first approximation)
+ Float_t deltaZ = zMeanChamber[currCh] - zMeanChamber[0];
+ trackIntersectCh[currCh][0] = zMeanChamber[currCh] * slopeX;
+ trackIntersectCh[currCh][1] = y11 + deltaZ * slopeY;
+ Int_t detElemIdFromTrack = DetElemIdFromPos(trackIntersectCh[currCh][0], trackIntersectCh[currCh][1], 11+currCh, 0);
+ if(detElemIdFromTrack<0) {
+ AliDebug(1, "Warning: trigger track outside trigger chamber\n");
+ isClearEvent = kFALSE;
+
+ // track is rejected since the extrapolated track
+ // does not match a slat (border effects)
+ AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackOutsideGeometry);
+ continue;
+ }
+
+ triggeredDigits[currCh] = FindPadMatchingTrig(detElemIdFromTrack, trackIntersectCh[currCh], isMatch, nboard, zRealMatch, y11);
+
+ // if FindPadMatchingTrig = -500 => too many digits matching pad =>
+ // => Event not clear => Do not use for efficiency calculation
+ if(triggeredDigits[currCh]<-100){
+ isClearEvent = kFALSE;
+ // track is rejected since it matches many pads
+ AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackMatchesManyPads);
+ AliDebug(1, Form("Warning: track = %p (%i) matches many pads. Rejected!\n",(void *)matchedTrigTrack, detElemIdFromTrack));
}
- return kTRUE;
+ for(Int_t cath=0; cath<fgkNcathodes; cath++){
+ if(!isMatch[cath]) continue;
+ AliESDMuonTrack::SetFiredChamber(pattern, cath, currCh);
+ digitPerTrack[cath]++;
+ trigScheme[cath][currCh]++;
+ slatThatTriggered[cath][currCh] = detElemIdFromTrack;
+ for(Int_t loc=0; loc<fgkNlocations; loc++){
+ boardThatTriggered[currCh][cath][loc] = nboard[cath][loc];
+ }
+ }
+ } // end chamber loop
+
+ for(Int_t cath=0; cath<fgkNcathodes; cath++){
+ if(digitPerTrack[cath]<3) {
+ isClearEvent = kFALSE;
+ // track is rejected since the number of associated
+ // digits found is less than 3.
+ AliESDMuonTrack::AddEffInfo(pattern, AliESDMuonTrack::kTrackMatchesFewPads);
+ AliDebug(1, Form("Warning: found %i digits for trigger track cathode %i.\nRejecting event\n", digitPerTrack[cath],cath));
+ }
+ }
+
+ if(!isClearEvent) return kFALSE;
+
+ AliESDMuonTrack::EAliTriggerChPatternFlag goodForEff = AliESDMuonTrack::kBoardEff;
+
+ Int_t ineffSlat = -1;
+ Int_t ineffDetElId = -1;
+ Int_t firstSlat = slatThatTriggered[kBending][0]%100;
+ if(firstSlat<0) firstSlat = slatThatTriggered[kBending][1]%100;
+ Int_t firstBoard = boardThatTriggered[0][kBending][0];
+ if(firstBoard<0) firstBoard = boardThatTriggered[1][kBending][0];
+ for(Int_t ch=0; ch<fgkNchambers; ch++){
+ Bool_t isCurrChIneff = kFALSE;
+ Int_t currSlat = slatThatTriggered[kBending][ch]%100;
+ if(currSlat<0){
+ ineffDetElId = DetElemIdFromPos(trackIntersectCh[ch][0], trackIntersectCh[ch][1], 11+ch, kBending);
+ currSlat = ineffDetElId%100;
+ ineffSlat = currSlat;
+ isCurrChIneff = kTRUE;
+ }
+ if(currSlat!=firstSlat) {
+ AliESDMuonTrack::AddEffInfo(pattern,
+ AliESDMuonTrack::kCrossDifferentSlats,
+ AliESDMuonTrack::kChEff); // track crosses different slats
+ return kTRUE;
+ }
+ Bool_t atLeastOneLoc=kFALSE;
+ if(isCurrChIneff) LocalBoardFromPos(trackIntersectCh[ch][0], trackIntersectCh[ch][1], ineffDetElId, kBending, ineffBoard);
+ for(Int_t loc=0; loc<fgkNlocations; loc++){
+ Int_t currBoard = boardThatTriggered[ch][kBending][loc];
+ if(isCurrChIneff) currBoard = ineffBoard[loc];
+ if(currBoard==firstBoard){
+ atLeastOneLoc=kTRUE;
+ break;
+ }
+ }
+ if(!atLeastOneLoc) goodForEff = AliESDMuonTrack::kSlatEff;
+ } // end chamber loop
+
+ AliESDMuonTrack::AddEffInfo(pattern, firstSlat, goodForEff);
+ return kTRUE;
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff