#include "AliMUONVTriggerStore.h"
#include "AliMUONVTriggerTrackStore.h"
#include "AliMUONRecoParam.h"
+#include "AliMUONGeometryTransformer.h"
+#include "AliMUONVDigit.h"
#include "AliMpDEManager.h"
#include "AliMpArea.h"
+#include "AliMpDDLStore.h"
+#include "AliMpVSegmentation.h"
+#include "AliMpSegmentation.h"
+#include "AliMpPad.h"
+#include "AliMpDetElement.h"
+#include "AliMpCathodType.h"
+
#include "AliLog.h"
#include "AliCodeTimer.h"
#include "AliTracker.h"
#include <Riostream.h>
+using std::cout;
+using std::endl;
/// \cond CLASSIMP
ClassImp(AliMUONVTrackReconstructor) // Class implementation in ROOT context
/// \endcond
//__________________________________________________________________________
AliMUONVTrackReconstructor::AliMUONVTrackReconstructor(const AliMUONRecoParam* recoParam,
- AliMUONVClusterServer* clusterServer)
+ AliMUONVClusterServer* clusterServer,
+ const AliMUONGeometryTransformer* transformer)
: TObject(),
fRecTracksPtr(0x0),
fNRecTracks(0),
fClusterServer(clusterServer),
fkRecoParam(recoParam),
-fMaxMCSAngle2(0.)
+fkTransformer(transformer),
+fMaxMCSAngle2(0x0)
{
/// Constructor for class AliMUONVTrackReconstructor
/// WARNING: if clusterServer=0x0, no clusterization will be possible at this level
AliMUONTrackParam param;
Double_t inverseBendingP = (GetRecoParam()->GetMinBendingMomentum() > 0.) ? 1./GetRecoParam()->GetMinBendingMomentum() : 1.;
param.SetInverseBendingMomentum(inverseBendingP);
- fMaxMCSAngle2 = AliMUONTrackExtrap::GetMCSAngle2(param, AliMUONConstants::ChamberThicknessInX0(), 1.);
+ fMaxMCSAngle2 = new Double_t [AliMUONConstants::NTrackingCh()];
+ for (Int_t iCh=0; iCh<AliMUONConstants::NTrackingCh(); iCh++)
+ fMaxMCSAngle2[iCh] = AliMUONTrackExtrap::GetMCSAngle2(param, AliMUONConstants::ChamberThicknessInX0(iCh), 1.);
}
{
/// Destructor for class AliMUONVTrackReconstructor
delete fRecTracksPtr;
+ delete[] fMaxMCSAngle2;
}
//__________________________________________________________________________
{
/// To reconstruct one event
AliDebug(1,"");
- AliCodeTimerAuto("");
+ AliCodeTimerAuto("",0);
// Reset array of tracks
ResetTracks();
if (GetRecoParam()->ImproveTracks()) ImproveTracks();
// Remove connected tracks
- if (GetRecoParam()->RemoveConnectedTracksInSt12()) RemoveConnectedTracks(kFALSE);
- else RemoveConnectedTracks(kTRUE);
+ RemoveConnectedTracks(3, 4, kFALSE);
+ RemoveConnectedTracks(2, 2, kFALSE);
+ if (GetRecoParam()->RemoveConnectedTracksInSt12()) RemoveConnectedTracks(0, 1, kFALSE);
// Fill AliMUONTrack data members
Finalize();
+ if (!GetRecoParam()->RemoveConnectedTracksInSt12()) TagConnectedTracks(0, 1, kTRUE);
+
+ // Make sure there is no bad track left
+ RemoveBadTracks();
+
+ // Refit the reconstructed tracks with a different resolution for mono-cathod clusters
+ if (GetRecoParam()->DiscardMonoCathodClusters()) DiscardMonoCathodClusters();
// Add tracks to MUON data container
- for (Int_t i=0; i<fNRecTracks; ++i)
+ for (Int_t i=0; i<fNRecTracks; ++i)
{
AliMUONTrack * track = (AliMUONTrack*) fRecTracksPtr->At(i);
track->SetUniqueID(i+1);
trackStore.Add(*track);
}
+
}
//__________________________________________________________________________
// MCS dipersion
Double_t angleMCS2 = 0.;
- if (AliMUONTrackExtrap::IsFieldON() && chamber < 6)
- angleMCS2 = AliMUONTrackExtrap::GetMCSAngle2(trackParam, AliMUONConstants::ChamberThicknessInX0(), 1.);
- else angleMCS2 = fMaxMCSAngle2;
Double_t impactMCS2 = 0.;
- if (!GetRecoParam()->SelectOnTrackSlope()) for (Int_t iCh=0; iCh<=chamber; iCh++)
- impactMCS2 += AliMUONConstants::DefaultChamberZ(chamber) * AliMUONConstants::DefaultChamberZ(chamber) * angleMCS2;
+ if (AliMUONTrackExtrap::IsFieldON() && chamber < 6) {
+
+ // track momentum is known
+ for (Int_t iCh=0; iCh<=chamber; iCh++) {
+ Double_t localMCS2 = AliMUONTrackExtrap::GetMCSAngle2(trackParam, AliMUONConstants::ChamberThicknessInX0(iCh), 1.);
+ angleMCS2 += localMCS2;
+ impactMCS2 += AliMUONConstants::DefaultChamberZ(chamber) * AliMUONConstants::DefaultChamberZ(chamber) * localMCS2;
+ }
+
+ } else {
+
+ // track momentum is unknown
+ for (Int_t iCh=0; iCh<=chamber; iCh++) {
+ angleMCS2 += fMaxMCSAngle2[iCh];
+ impactMCS2 += AliMUONConstants::DefaultChamberZ(chamber) * AliMUONConstants::DefaultChamberZ(chamber) * fMaxMCSAngle2[iCh];
+ }
+
+ }
// ------ track selection in non bending direction ------
if (GetRecoParam()->SelectOnTrackSlope()) {
// check if non bending slope is within tolerances
- Double_t nonBendingSlopeErr = TMath::Sqrt(kParamCov(1,1) + (chamber + 1.) * angleMCS2);
+ Double_t nonBendingSlopeErr = TMath::Sqrt(kParamCov(1,1) + angleMCS2);
if ((TMath::Abs(trackParam.GetNonBendingSlope()) - sigmaCut * nonBendingSlopeErr) > GetRecoParam()->GetMaxNonBendingSlope()) return kFALSE;
} else {
if (GetRecoParam()->SelectOnTrackSlope()) {
// check if bending slope is within tolerances
- Double_t bendingSlopeErr = TMath::Sqrt(kParamCov(3,3) + (chamber + 1.) * angleMCS2);
+ Double_t bendingSlopeErr = TMath::Sqrt(kParamCov(3,3) + angleMCS2);
if ((TMath::Abs(trackParam.GetBendingSlope()) - sigmaCut * bendingSlopeErr) > GetRecoParam()->GetMaxBendingSlope()) return kFALSE;
} else {
TClonesArray* AliMUONVTrackReconstructor::MakeSegmentsBetweenChambers(const AliMUONVClusterStore& clusterStore, Int_t ch1, Int_t ch2)
{
/// To make the list of segments from the list of clusters in the 2 given chambers.
- /// Return a new TClonesArray of segments.
- /// It is the responsibility of the user to delete it afterward.
+ /// Return a TClonesArray of new segments (segments made in a previous call of this function are removed).
AliDebug(1,Form("Enter MakeSegmentsBetweenChambers (1..) %d-%d", ch1+1, ch2+1));
- AliCodeTimerAuto("");
+ AliCodeTimerAuto("",0);
AliMUONVCluster *cluster1, *cluster2;
AliMUONObjectPair *segment;
Double_t bendingSlope = 0., bendingSlopeErr = 0., bendingImpactParam = 0., bendingImpactParamErr = 0., bendingImpactParamErr2 = 0.;
Double_t bendingMomentum = 0., bendingMomentumErr = 0.;
Double_t bendingVertexDispersion2 = GetRecoParam()->GetBendingVertexDispersion() * GetRecoParam()->GetBendingVertexDispersion();
- Double_t impactMCS2 = 0; // maximum impact parameter dispersion**2 due to MCS in chamber
- if (!GetRecoParam()->SelectOnTrackSlope() || AliMUONTrackExtrap::IsFieldON()) for (Int_t iCh=0; iCh<=ch1; iCh++)
- impactMCS2 += AliMUONConstants::DefaultChamberZ(iCh) * AliMUONConstants::DefaultChamberZ(iCh) * fMaxMCSAngle2;
+ Double_t angleMCS2 = 0.; // maximum angular dispersion**2 due to MCS in chamber
+ Double_t impactMCS2 = 0.; // maximum impact parameter dispersion**2 due to MCS in chamber
+ for (Int_t iCh=0; iCh<=ch1; iCh++) {
+ angleMCS2 += fMaxMCSAngle2[iCh];
+ impactMCS2 += AliMUONConstants::DefaultChamberZ(iCh) * AliMUONConstants::DefaultChamberZ(iCh) * fMaxMCSAngle2[iCh];
+ }
Double_t sigmaCut = GetRecoParam()->GetSigmaCutForTracking();
// Create iterators to loop over clusters in both chambers
TIter nextInCh2(clusterStore.CreateChamberIterator(ch2,ch2));
// list of segments
- TClonesArray *segments = new TClonesArray("AliMUONObjectPair", 100);
+ static TClonesArray *segments = new TClonesArray("AliMUONObjectPair", 100);
+ segments->Clear("C");
// Loop over clusters in the first chamber of the station
while ( ( cluster1 = static_cast<AliMUONVCluster*>(nextInCh1()) ) ) {
if (GetRecoParam()->SelectOnTrackSlope()) {
// check if non bending slope is within tolerances
- nonBendingSlopeErr = TMath::Sqrt((cluster1->GetErrX2() + cluster2->GetErrX2()) / dZ / dZ + (ch1 + 1.) * fMaxMCSAngle2);
+ nonBendingSlopeErr = TMath::Sqrt((cluster1->GetErrX2() + cluster2->GetErrX2()) / dZ / dZ + angleMCS2);
if ((TMath::Abs(nonBendingSlope) - sigmaCut * nonBendingSlopeErr) > GetRecoParam()->GetMaxNonBendingSlope()) continue;
} else {
if (GetRecoParam()->SelectOnTrackSlope()) {
// check if bending slope is within tolerances
- bendingSlopeErr = TMath::Sqrt((cluster1->GetErrY2() + cluster2->GetErrY2()) / dZ / dZ + (ch1 + 1.) * fMaxMCSAngle2);
+ bendingSlopeErr = TMath::Sqrt((cluster1->GetErrY2() + cluster2->GetErrY2()) / dZ / dZ + angleMCS2);
if ((TMath::Abs(bendingSlope) - sigmaCut * bendingSlopeErr) > GetRecoParam()->GetMaxBendingSlope()) continue;
} else {
}
//__________________________________________________________________________
-void AliMUONVTrackReconstructor::RemoveConnectedTracks(Bool_t inSt345)
+void AliMUONVTrackReconstructor::RemoveBadTracks()
{
- /// To remove double tracks:
- /// Tracks are considered identical if they share 1 cluster or more.
- /// If inSt345=kTRUE only stations 3, 4 and 5 are considered.
- /// Among two identical tracks, one keeps the track with the larger number of clusters
- /// or, if these numbers are equal, the track with the minimum chi2.
- AliMUONTrack *track1, *track2, *trackToRemove;
- Int_t clustersInCommon, nClusters1, nClusters2;
- Bool_t removedTrack1;
+ /// Remove tracks for which a problem occured somewhere during the tracking
+
+ AliMUONTrack *track, *nextTrack;
+ Bool_t trackRemoved = kFALSE;
+
+ track = (AliMUONTrack*) fRecTracksPtr->First();
+ while (track) {
+
+ nextTrack = (AliMUONTrack*) fRecTracksPtr->After(track);
+
+ if (track->GetGlobalChi2() >= AliMUONTrack::MaxChi2()) {
+ AliWarning("problem occured somewhere during the tracking --> discard track");
+ fRecTracksPtr->Remove(track);
+ fNRecTracks--;
+ trackRemoved = kTRUE;
+ }
+
+ track = nextTrack;
+
+ }
+
+ // compress array of tracks if needed
+ if (trackRemoved) fRecTracksPtr->Compress();
+
+}
+
+ //__________________________________________________________________________
+void AliMUONVTrackReconstructor::RemoveConnectedTracks(Int_t stMin, Int_t stMax, Bool_t all)
+{
+ /// Find and remove tracks sharing 1 cluster or more in station(s) [stMin, stMax].
+ /// For each couple of connected tracks, one removes the one with the smallest
+ /// number of clusters or with the highest chi2 value in case of equality.
+ /// If all=kTRUE: both tracks are removed.
+
+ // tag the tracks to be removed
+ TagConnectedTracks(stMin, stMax, all);
+
+ // remove them
+ Int_t nTracks = fRecTracksPtr->GetEntriesFast();
+ for (Int_t i = 0; i < nTracks; i++) {
+ if (((AliMUONTrack*) fRecTracksPtr->UncheckedAt(i))->IsConnected()) {
+ fRecTracksPtr->RemoveAt(i);
+ fNRecTracks--;
+ }
+ }
+
+ // remove holes in the array if any
+ fRecTracksPtr->Compress();
+}
+
+ //__________________________________________________________________________
+void AliMUONVTrackReconstructor::TagConnectedTracks(Int_t stMin, Int_t stMax, Bool_t all)
+{
+ /// Find and tag tracks sharing 1 cluster or more in station(s) [stMin, stMax].
+ /// For each couple of connected tracks, one tags the one with the smallest
+ /// number of clusters or with the highest chi2 value in case of equality.
+ /// If all=kTRUE: both tracks are tagged.
+
+ AliMUONTrack *track1, *track2;
+ Int_t nClusters1, nClusters2;
+ Int_t nTracks = fRecTracksPtr->GetEntriesFast();
+
+ // reset the tags
+ for (Int_t i = 0; i < nTracks; i++) ((AliMUONTrack*) fRecTracksPtr->UncheckedAt(i))->Connected(kFALSE);
+
// Loop over first track of the pair
- track1 = (AliMUONTrack*) fRecTracksPtr->First();
- while (track1) {
- removedTrack1 = kFALSE;
- nClusters1 = track1->GetNClusters();
+ for (Int_t iTrack1 = 0; iTrack1 < nTracks; iTrack1++) {
+ track1 = (AliMUONTrack*) fRecTracksPtr->UncheckedAt(iTrack1);
+
// Loop over second track of the pair
- track2 = (AliMUONTrack*) fRecTracksPtr->After(track1);
- while (track2) {
- nClusters2 = track2->GetNClusters();
- // number of clusters in common between two tracks
- if (inSt345) clustersInCommon = track1->ClustersInCommonInSt345(track2);
- else clustersInCommon = track1->ClustersInCommon(track2);
- // check for identical tracks
- if (clustersInCommon > 0) {
- // decide which track to remove
- if ((nClusters1 > nClusters2) || ((nClusters1 == nClusters2) && (track1->GetGlobalChi2() <= track2->GetGlobalChi2()))) {
- // remove track2 and continue the second loop with the track next to track2
- trackToRemove = track2;
- track2 = (AliMUONTrack*) fRecTracksPtr->After(track2);
- fRecTracksPtr->Remove(trackToRemove);
- fRecTracksPtr->Compress(); // this is essential to retrieve the TClonesArray afterwards
- fNRecTracks--;
- } else {
- // else remove track1 and continue the first loop with the track next to track1
- trackToRemove = track1;
- track1 = (AliMUONTrack*) fRecTracksPtr->After(track1);
- fRecTracksPtr->Remove(trackToRemove);
- fRecTracksPtr->Compress(); // this is essential to retrieve the TClonesArray afterwards
- fNRecTracks--;
- removedTrack1 = kTRUE;
- break;
- }
- } else track2 = (AliMUONTrack*) fRecTracksPtr->After(track2);
- } // track2
- if (removedTrack1) continue;
- track1 = (AliMUONTrack*) fRecTracksPtr->After(track1);
- } // track1
- return;
+ for (Int_t iTrack2 = iTrack1+1; iTrack2 < nTracks; iTrack2++) {
+ track2 = (AliMUONTrack*) fRecTracksPtr->UncheckedAt(iTrack2);
+
+ // check for connected tracks and tag them
+ if (track1->ClustersInCommon(track2, stMin, stMax) > 0) {
+
+ if (all) {
+
+ // tag both tracks
+ track1->Connected();
+ track2->Connected();
+
+ } else {
+
+ // tag only the worst track
+ nClusters1 = track1->GetNClusters();
+ nClusters2 = track2->GetNClusters();
+ if ((nClusters1 > nClusters2) || ((nClusters1 == nClusters2) && (track1->GetGlobalChi2() <= track2->GetGlobalChi2()))) {
+ track2->Connected();
+ } else {
+ track1->Connected();
+ }
+
+ }
+
+ }
+
+ }
+
+ }
+
}
//__________________________________________________________________________
// extrapolate track parameters to the chamber
AliMUONTrackParam extrapTrackParam(trackParam);
- AliMUONTrackExtrap::ExtrapToZCov(&extrapTrackParam, AliMUONConstants::DefaultChamberZ(chamber));
+ if (!AliMUONTrackExtrap::ExtrapToZCov(&extrapTrackParam, AliMUONConstants::DefaultChamberZ(chamber))) return;
// build the searching area using the track and chamber resolutions and the maximum-distance-to-track value
const TMatrixD& kParamCov = extrapTrackParam.GetCovariances();
/// return trackParamAtCluster
// extrapolate track parameters and covariances at the z position of the tested cluster
+ // and set pointer to cluster into trackParamAtCluster
trackParamAtCluster = trackParam;
- AliMUONTrackExtrap::ExtrapToZCov(&trackParamAtCluster, cluster->GetZ(), updatePropagator);
-
- // set pointer to cluster into trackParamAtCluster
trackParamAtCluster.SetClusterPtr(cluster);
+ if (!AliMUONTrackExtrap::ExtrapToZCov(&trackParamAtCluster, cluster->GetZ(), updatePropagator))
+ return 2.*AliMUONTrack::MaxChi2();
// Set differences between trackParam and cluster in the bending and non bending directions
Double_t dX = cluster->GetX() - trackParamAtCluster.GetNonBendingCoor();
Double_t det = sigmaX2 * sigmaY2 - covXY * covXY;
// Compute chi2
- if (det == 0.) return 1.e10;
+ if (det == 0.) return 2.*AliMUONTrack::MaxChi2();
return (dX * dX * sigmaY2 + dY * dY * sigmaX2 - 2. * dX * dY * covXY) / det;
}
// extrapolate linearly track parameters and covariances at the z position of the second cluster
trackParamAtCluster2 = trackParamAtCluster1;
- AliMUONTrackExtrap::LinearExtrapToZ(&trackParamAtCluster2, cluster2->GetZ());
+ AliMUONTrackExtrap::LinearExtrapToZCov(&trackParamAtCluster2, cluster2->GetZ());
// set pointer to cluster2 into trackParamAtCluster2
trackParamAtCluster2.SetClusterPtr(cluster2);
// Compute chi2
Double_t detX = sigma2X1 * sigma2X2 - covX1X2 * covX1X2;
Double_t detY = sigma2Y1 * sigma2Y2 - covY1Y2 * covY1Y2;
- if (detX == 0. || detY == 0.) return 1.e10;
+ if (detX == 0. || detY == 0.) return 2.*AliMUONTrack::MaxChi2();
return (dX1 * dX1 * sigma2X2 + dX2 * dX2 * sigma2X1 - 2. * dX1 * dX2 * covX1X2) / detX
+ (dY1 * dY1 * sigma2Y2 + dY2 * dY2 * sigma2Y1 - 2. * dY1 * dY2 * covY1Y2) / detY;
/// return kTRUE if new cluster(s) have been found (otherwise return kFALSE)
AliDebug(1,Form("Enter FollowLinearTrackInChamber(1..) %d", nextChamber+1));
- Double_t chi2WithOneCluster = 1.e10;
+ Double_t chi2WithOneCluster = AliMUONTrack::MaxChi2();
Double_t maxChi2WithOneCluster = 2. * GetRecoParam()->GetSigmaCutForTracking() *
GetRecoParam()->GetSigmaCutForTracking(); // 2 because 2 quantities in chi2
Double_t bestChi2WithOneCluster = maxChi2WithOneCluster;
}
// Add MCS effect
- AliMUONTrackExtrap::AddMCSEffect(&trackParam,AliMUONConstants::ChamberThicknessInX0(),1.);
+ AliMUONTrackExtrap::AddMCSEffect(&trackParam,AliMUONConstants::ChamberThicknessInX0(trackParam.GetClusterPtr()->GetChamberId()),-1.);
// Printout for debuging
if ((AliLog::GetDebugLevel("MUON","AliMUONVTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
// try to add the current cluster accuratly
extrapTrackParamAtCluster = trackParam;
- AliMUONTrackExtrap::LinearExtrapToZ(&extrapTrackParamAtCluster, cluster->GetZ());
+ AliMUONTrackExtrap::LinearExtrapToZCov(&extrapTrackParamAtCluster, cluster->GetZ());
chi2WithOneCluster = TryOneCluster(extrapTrackParamAtCluster, cluster, extrapTrackParamAtCluster);
// if good chi2 then consider to add cluster
ch2 = 2*nextStation+1;
}
- Double_t chi2WithOneCluster = 1.e10;
- Double_t chi2WithTwoClusters = 1.e10;
+ Double_t chi2WithOneCluster = AliMUONTrack::MaxChi2();
+ Double_t chi2WithTwoClusters = AliMUONTrack::MaxChi2();
Double_t maxChi2WithOneCluster = 2. * GetRecoParam()->GetSigmaCutForTracking() *
GetRecoParam()->GetSigmaCutForTracking(); // 2 because 2 quantities in chi2
Double_t maxChi2WithTwoClusters = 4. * GetRecoParam()->GetSigmaCutForTracking() *
}
// Add MCS effect
- AliMUONTrackExtrap::AddMCSEffect(&trackParam,AliMUONConstants::ChamberThicknessInX0(),1.);
+ AliMUONTrackExtrap::AddMCSEffect(&trackParam,AliMUONConstants::ChamberThicknessInX0(trackParam.GetClusterPtr()->GetChamberId()),-1.);
// Printout for debuging
if ((AliLog::GetDebugLevel("MUON","AliMUONVTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
// try to add the current cluster accuratly
extrapTrackParamAtCluster2 = trackParam;
- AliMUONTrackExtrap::LinearExtrapToZ(&extrapTrackParamAtCluster2, clusterCh2->GetZ());
+ AliMUONTrackExtrap::LinearExtrapToZCov(&extrapTrackParamAtCluster2, clusterCh2->GetZ());
chi2WithOneCluster = TryOneCluster(extrapTrackParamAtCluster2, clusterCh2, extrapTrackParamAtCluster2);
// if good chi2 then try to attach a cluster in the other chamber too
}
// add MCS effect
- AliMUONTrackExtrap::AddMCSEffect(&extrapTrackParamAtCluster2,AliMUONConstants::ChamberThicknessInX0(),1.);
+ AliMUONTrackExtrap::AddMCSEffect(&extrapTrackParamAtCluster2,AliMUONConstants::ChamberThicknessInX0(ch2),-1.);
// reset cluster iterator of chamber 1
nextInCh1.Reset();
}
//Extrapolate trackCandidate to chamber "ch2"
- AliMUONTrackExtrap::LinearExtrapToZ(&trackParam, AliMUONConstants::DefaultChamberZ(ch2));
+ AliMUONTrackExtrap::LinearExtrapToZCov(&trackParam, AliMUONConstants::DefaultChamberZ(ch2));
// add MCS effect for next step
- AliMUONTrackExtrap::AddMCSEffect(&trackParam,AliMUONConstants::ChamberThicknessInX0(),1.);
+ AliMUONTrackExtrap::AddMCSEffect(&trackParam,AliMUONConstants::ChamberThicknessInX0(ch2),-1.);
// reset cluster iterator of chamber 1
nextInCh1.Reset();
// try to add the current cluster accuratly
extrapTrackParamAtCluster1 = trackParam;
- AliMUONTrackExtrap::LinearExtrapToZ(&extrapTrackParamAtCluster1, clusterCh1->GetZ());
+ AliMUONTrackExtrap::LinearExtrapToZCov(&extrapTrackParamAtCluster1, clusterCh1->GetZ());
chi2WithOneCluster = TryOneCluster(extrapTrackParamAtCluster1, clusterCh1, extrapTrackParamAtCluster1);
// if good chi2 then consider to add clusterCh1
//__________________________________________________________________________
void AliMUONVTrackReconstructor::Finalize()
{
- /// Recompute track parameters and covariances at each attached cluster from those at the first one
+ /// Recompute track parameters and covariances at each attached cluster
/// Set the label pointing to the corresponding MC track
+ /// Remove the track if finalization failed
- AliMUONTrack *track;
+ AliMUONTrack *track, *nextTrack;
+ Bool_t trackRemoved = kFALSE;
track = (AliMUONTrack*) fRecTracksPtr->First();
while (track) {
- FinalizeTrack(*track);
+ nextTrack = (AliMUONTrack*) fRecTracksPtr->After(track);
+
+ if (FinalizeTrack(*track)) track->FindMCLabel();
+ else {
+ fRecTracksPtr->Remove(track);
+ fNRecTracks--;
+ trackRemoved = kTRUE;
+ }
+
+ track = nextTrack;
+
+ }
+
+ // compress array of tracks if needed
+ if (trackRemoved) fRecTracksPtr->Compress();
+
+}
+
+//__________________________________________________________________________
+void AliMUONVTrackReconstructor::DiscardMonoCathodClusters()
+{
+ /// Assign a different resolution to the mono-cathod clusters
+ /// in the direction of the missing plane and refit the track
+ /// Remove the track in case of failure
+
+ if (!fkTransformer) AliFatal("missing geometry transformer");
+
+ AliMUONTrack *track, *nextTrack;
+ Bool_t trackRemoved = kFALSE;
+
+ track = (AliMUONTrack*) fRecTracksPtr->First();
+ while (track) {
+
+ nextTrack = (AliMUONTrack*) fRecTracksPtr->After(track);
+
+ ChangeMonoCathodClusterRes(*track);
+
+ if (!RefitTrack(*track) || (GetRecoParam()->ImproveTracks() && !track->IsImproved())) {
+ fRecTracksPtr->Remove(track);
+ fNRecTracks--;
+ trackRemoved = kTRUE;
+ }
+
+ track = nextTrack;
+
+ }
+
+ // compress array of tracks if needed
+ if (trackRemoved) fRecTracksPtr->Compress();
+
+}
+
+//__________________________________________________________________________
+void AliMUONVTrackReconstructor::ChangeMonoCathodClusterRes(AliMUONTrack &track)
+{
+ /// Assign a different resolution to the mono-cathod clusters
+ /// in the direction of the missing plane and refit the track
+
+ // Loop over clusters
+ AliMUONVCluster *cluster;
+ Int_t nClusters = track.GetNClusters();
+ for (Int_t iCluster = 0; iCluster < nClusters; iCluster++) {
+ cluster = ((AliMUONTrackParam*) track.GetTrackParamAtCluster()->UncheckedAt(iCluster))->GetClusterPtr();
+
+ // do it only for stations 3, 4 & 5
+ if (cluster->GetChamberId() < 4) continue;
- track->FindMCLabel();
+ // get the cathod corresponding to the bending/non-bending plane
+ Int_t deId = cluster->GetDetElemId();
+ AliMpDetElement* de = AliMpDDLStore::Instance()->GetDetElement(deId, kFALSE);
+ if (!de) continue;
+ AliMp::CathodType cath1 = de->GetCathodType(AliMp::kBendingPlane);
+ AliMp::CathodType cath2 = de->GetCathodType(AliMp::kNonBendingPlane);
- track = (AliMUONTrack*) fRecTracksPtr->After(track);
+ // get the corresponding segmentation
+ const AliMpVSegmentation* seg1 = AliMpSegmentation::Instance()->GetMpSegmentation(deId, cath1);
+ const AliMpVSegmentation* seg2 = AliMpSegmentation::Instance()->GetMpSegmentation(deId, cath2);
+ if (!seg1 || !seg2) continue;
+
+ // get local coordinate of the cluster
+ Double_t lX,lY,lZ;
+ Double_t gX = cluster->GetX();
+ Double_t gY = cluster->GetY();
+ Double_t gZ = cluster->GetZ();
+ fkTransformer->Global2Local(deId,gX,gY,gZ,lX,lY,lZ);
+
+ // find pads below the cluster
+ AliMpPad pad1 = seg1->PadByPosition(lX, lY, kFALSE);
+ AliMpPad pad2 = seg2->PadByPosition(lX, lY, kFALSE);
+
+ // build their ID if pads are valid
+ UInt_t padId1 = (pad1.IsValid()) ? AliMUONVDigit::BuildUniqueID(deId, pad1.GetManuId(), pad1.GetManuChannel(), cath1) : 0;
+ UInt_t padId2 = (pad2.IsValid()) ? AliMUONVDigit::BuildUniqueID(deId, pad2.GetManuId(), pad2.GetManuChannel(), cath2) : 0;
+
+ // check if the cluster contains these pads
+ Bool_t hasNonBending = kFALSE;
+ Bool_t hasBending = kFALSE;
+ for (Int_t iDigit = 0; iDigit < cluster->GetNDigits(); iDigit++) {
+
+ UInt_t digitId = cluster->GetDigitId(iDigit);
+
+ if (digitId == padId1) {
+
+ hasBending = kTRUE;
+ if (hasNonBending) break;
+
+ } else if (digitId == padId2) {
+
+ hasNonBending = kTRUE;
+ if (hasBending) break;
+
+ }
+
+ }
+
+ // modify the cluster resolution if needed
+ if (!hasNonBending) cluster->SetErrXY(GetRecoParam()->GetMonoCathodClNonBendingRes(), cluster->GetErrY());
+ if (!hasBending) cluster->SetErrXY(cluster->GetErrX(), GetRecoParam()->GetMonoCathodClBendingRes());
}
const AliMUONTrackHitPattern& trackHitPattern)
{
/// Try to match track from tracking system with trigger track
- AliCodeTimerAuto("");
+ AliCodeTimerAuto("",0);
trackHitPattern.ExecuteValidation(trackStore, triggerTrackStore, triggerStore);
}
- //__________________________________________________________________________
+
+//__________________________________________________________________________
void AliMUONVTrackReconstructor::EventReconstructTrigger(const AliMUONTriggerCircuit& circuit,
const AliMUONVTriggerStore& triggerStore,
AliMUONVTriggerTrackStore& triggerTrackStore)
{
- /// To make the trigger tracks from Local Trigger
+ /// Fill trigger track store from local trigger
AliDebug(1, "");
- AliCodeTimerAuto("");
-
+ AliCodeTimerAuto("",0);
+
AliMUONGlobalTrigger* globalTrigger = triggerStore.Global();
UChar_t gloTrigPat = 0;
gloTrigPat = globalTrigger->GetGlobalResponse();
}
+ AliMUONTriggerTrack triggerTrack;
+
TIter next(triggerStore.CreateIterator());
AliMUONLocalTrigger* locTrg(0x0);
-
- Float_t z11 = AliMUONConstants::DefaultChamberZ(10);
- Float_t z21 = AliMUONConstants::DefaultChamberZ(12);
-
- AliMUONTriggerTrack triggerTrack;
while ( ( locTrg = static_cast<AliMUONLocalTrigger*>(next()) ) )
{
- Bool_t xTrig=locTrg->IsTrigX();
- Bool_t yTrig=locTrg->IsTrigY();
-
- Int_t localBoardId = locTrg->LoCircuit();
-
- if (xTrig && yTrig)
+ if ( locTrg->IsTrigX() && locTrg->IsTrigY() )
{ // make Trigger Track if trigger in X and Y
- Float_t y11 = circuit.GetY11Pos(localBoardId, locTrg->LoStripX());
- // need first to convert deviation to [0-30]
- // (see AliMUONLocalTriggerBoard::LocalTrigger)
- Int_t deviation = locTrg->GetDeviation();
- Int_t stripX21 = locTrg->LoStripX()+deviation+1;
- Float_t y21 = circuit.GetY21Pos(localBoardId, stripX21);
- Float_t x11 = circuit.GetX11Pos(localBoardId, locTrg->LoStripY());
-
- AliDebug(1, Form(" MakeTriggerTrack %d %d %d %d %f %f %f \n",locTrg->LoCircuit(),
- locTrg->LoStripX(),locTrg->LoStripX()+locTrg->LoDev()+1,locTrg->LoStripY(),y11, y21, x11));
-
- Float_t thetax = TMath::ATan2( x11 , z11 );
- Float_t thetay = TMath::ATan2( (y21-y11) , (z21-z11) );
+ if (TriggerToTrack(circuit, *locTrg, triggerTrack, gloTrigPat))
+ triggerTrackStore.Add(triggerTrack);
- CorrectThetaRange(thetax);
- CorrectThetaRange(thetay);
-
- triggerTrack.SetX11(x11);
- triggerTrack.SetY11(y11);
- triggerTrack.SetThetax(thetax);
- triggerTrack.SetThetay(thetay);
- triggerTrack.SetGTPattern(gloTrigPat);
- triggerTrack.SetLoTrgNum(localBoardId);
-
- triggerTrackStore.Add(triggerTrack);
} // board is fired
} // end of loop on Local Trigger
}
//__________________________________________________________________________
-void AliMUONVTrackReconstructor::CorrectThetaRange(Float_t& theta)
+Bool_t AliMUONVTrackReconstructor::TriggerToTrack(const AliMUONTriggerCircuit& circuit,
+ const AliMUONLocalTrigger& locTrg,
+ AliMUONTriggerTrack& triggerTrack,
+ UChar_t globalTriggerPattern)
{
- /// The angles of the trigger tracks, obtained with ATan2,
- /// have values around +pi and -pi. On the contrary, the angles
- /// used in the tracker tracks have values around 0.
- /// This function sets the same range for the trigger tracks angles.
- if (theta < -TMath::PiOver2()) theta += TMath::Pi();
- else if(theta > TMath::PiOver2()) theta -= TMath::Pi();
+ /// To make the trigger tracks from Local Trigger
+ const Double_t kTrigNonBendReso = AliMUONConstants::TriggerNonBendingReso();
+ const Double_t kTrigBendReso = AliMUONConstants::TriggerBendingReso();
+ const Double_t kSqrt12 = TMath::Sqrt(12.);
+
+ TMatrixD trigCov(3,3);
+
+ Int_t localBoardId = locTrg.LoCircuit();
+
+ Float_t y11 = circuit.GetY11Pos(localBoardId, locTrg.LoStripX());
+ Float_t z11 = circuit.GetZ11Pos(localBoardId, locTrg.LoStripX());
+ // need first to convert deviation to [0-30]
+ // (see AliMUONLocalTriggerBoard::LocalTrigger)
+ Int_t deviation = locTrg.GetDeviation();
+ Int_t stripX21 = locTrg.LoStripX()+deviation+1;
+ Float_t y21 = circuit.GetY21Pos(localBoardId, stripX21);
+ Float_t z21 = circuit.GetZ21Pos(localBoardId, stripX21);
+ Float_t x11 = circuit.GetX11Pos(localBoardId, locTrg.LoStripY());
+
+ AliDebug(1, Form(" MakeTriggerTrack %3d %2d %2d %2d (%f %f %f) (%f %f)\n",locTrg.LoCircuit(),
+ locTrg.LoStripX(),locTrg.LoStripX()+deviation+1,locTrg.LoStripY(),x11, y11, z11, y21, z21));
+
+ if (TMath::Abs(z11) < 0.00001) return kFALSE;
+
+ Double_t deltaZ = z11 - z21;
+
+ Float_t slopeX = x11/z11;
+ Float_t slopeY = (y11-y21) / deltaZ;
+
+ Float_t sigmaX = circuit.GetX11Width(localBoardId, locTrg.LoStripY()) / kSqrt12;
+ Float_t sigmaY = circuit.GetY11Width(localBoardId, locTrg.LoStripX()) / kSqrt12;
+ Float_t sigmaY21 = circuit.GetY21Width(localBoardId, locTrg.LoStripX()) / kSqrt12;
+
+ trigCov.Zero();
+ trigCov(0,0) = kTrigNonBendReso * kTrigNonBendReso + sigmaX * sigmaX;
+ trigCov(1,1) = kTrigBendReso * kTrigBendReso + sigmaY * sigmaY;
+ trigCov(2,2) =
+ (2. * kTrigBendReso * kTrigBendReso + sigmaY * sigmaY + sigmaY21 * sigmaY21 ) / deltaZ / deltaZ;
+ trigCov(1,2) = trigCov(2,1) = trigCov(1,1) / deltaZ;
+
+ triggerTrack.SetX11(x11);
+ triggerTrack.SetY11(y11);
+ triggerTrack.SetZ11(z11);
+ triggerTrack.SetZ21(z21);
+ triggerTrack.SetSlopeX(slopeX);
+ triggerTrack.SetSlopeY(slopeY);
+ triggerTrack.SetGTPattern(globalTriggerPattern);
+ triggerTrack.SetLoTrgNum(localBoardId);
+ triggerTrack.SetCovariances(trigCov);
+ triggerTrack.SetUniqueID(locTrg.GetUniqueID());
+
+ return kTRUE;
+
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff