#include "AliMUONTrack.h"
-#include "AliMUONTrackParam.h"
-#include "AliMUONVCluster.h"
-#include "AliMUONObjectPair.h"
+#include "AliMUONReconstructor.h"
+#include "AliMUONRecoParam.h"
+#include "AliMUONVCluster.h"
+#include "AliMUONVClusterStore.h"
+#include "AliMUONObjectPair.h"
#include "AliMUONConstants.h"
-#include "AliMUONTrackExtrap.h"
+#include "AliMUONTrackExtrap.h"
#include "AliLog.h"
//__________________________________________________________________________
AliMUONTrack::AliMUONTrack()
: TObject(),
- fTrackParamAtCluster(new TClonesArray("AliMUONTrackParam",10)),
+ fTrackParamAtCluster(0x0),
fFitWithVertex(kFALSE),
fVertexErrXY2(),
fFitWithMCS(kFALSE),
fLocalTrigger(0)
{
/// Default constructor
- fTrackParamAtCluster->SetOwner(kTRUE);
fVertexErrXY2[0] = 0.;
fVertexErrXY2[1] = 0.;
}
fLocalTrigger(0)
{
/// Constructor from two clusters
- fTrackParamAtCluster->SetOwner(kTRUE);
fVertexErrXY2[0] = 0.;
fVertexErrXY2[1] = 0.;
// Pointers to clusters from the segment
- AliMUONVCluster* cluster1 = (AliMUONVCluster*) segment->First();
- AliMUONVCluster* cluster2 = (AliMUONVCluster*) segment->Second();
-
- // check sorting in -Z (spectro z<0)
- if (cluster1->GetZ() < cluster2->GetZ()) {
- cluster1 = cluster2;
- cluster2 = (AliMUONVCluster*) segment->First();
- }
-
- // order the clusters into the track according to the station the segment belong to
- //(the cluster first attached is the one from which we will start the tracking procedure)
- AliMUONVCluster *firstCluster, *lastCluster;
- if (cluster1->GetChamberId() == 8) {
- firstCluster = cluster1;
- lastCluster = cluster2;
- } else {
- firstCluster = cluster2;
- lastCluster = cluster1;
- }
+ AliMUONVCluster* firstCluster = (AliMUONVCluster*) segment->First();
+ AliMUONVCluster* lastCluster = (AliMUONVCluster*) segment->Second();
// Compute track parameters
Double_t z1 = firstCluster->GetZ();
Double_t bendingImpact = bendingCoor1 - z1 * bendingSlope;
Double_t inverseBendingMomentum = 1. / AliMUONTrackExtrap::GetBendingMomentumFromImpactParam(bendingImpact);
-
// Set track parameters at first cluster
AliMUONTrackParam trackParamAtFirstCluster;
trackParamAtFirstCluster.SetZ(z1);
trackParamAtFirstCluster.SetBendingSlope(bendingSlope);
trackParamAtFirstCluster.SetInverseBendingMomentum(inverseBendingMomentum);
-
// Set track parameters at last cluster
AliMUONTrackParam trackParamAtLastCluster;
trackParamAtLastCluster.SetZ(z2);
trackParamAtLastCluster.SetBendingSlope(bendingSlope);
trackParamAtLastCluster.SetInverseBendingMomentum(inverseBendingMomentum);
-
// Compute and set track parameters covariances at first cluster
- TMatrixD paramCov1(5,5);
- paramCov1.Zero();
+ TMatrixD paramCov(5,5);
+ paramCov.Zero();
// Non bending plane
- paramCov1(0,0) = firstCluster->GetErrX2();
- paramCov1(0,1) = firstCluster->GetErrX2() / dZ;
- paramCov1(1,0) = paramCov1(0,1);
- paramCov1(1,1) = ( firstCluster->GetErrX2() + lastCluster->GetErrX2() ) / dZ / dZ;
+ paramCov(0,0) = firstCluster->GetErrX2();
+ paramCov(0,1) = firstCluster->GetErrX2() / dZ;
+ paramCov(1,0) = paramCov(0,1);
+ paramCov(1,1) = ( firstCluster->GetErrX2() + lastCluster->GetErrX2() ) / dZ / dZ;
// Bending plane
- paramCov1(2,2) = firstCluster->GetErrY2();
- paramCov1(2,3) = firstCluster->GetErrY2() / dZ;
- paramCov1(3,2) = paramCov1(2,3);
- paramCov1(3,3) = ( firstCluster->GetErrY2() + lastCluster->GetErrY2() ) / dZ / dZ;
- // Inverse bending momentum (50% error)
- paramCov1(4,4) = 0.5*inverseBendingMomentum * 0.5*inverseBendingMomentum;
- // Set covariances
- trackParamAtFirstCluster.SetCovariances(paramCov1);
-
+ paramCov(2,2) = firstCluster->GetErrY2();
+ paramCov(2,3) = firstCluster->GetErrY2() / dZ;
+ paramCov(3,2) = paramCov(2,3);
+ paramCov(3,3) = ( firstCluster->GetErrY2() + lastCluster->GetErrY2() ) / dZ / dZ;
+ // Inverse bending momentum (vertex resolution + bending slope resolution + 10% error on dipole parameters+field)
+ paramCov(4,4) = ((AliMUONReconstructor::GetRecoParam()->GetBendingVertexDispersion() *
+ AliMUONReconstructor::GetRecoParam()->GetBendingVertexDispersion() +
+ (z1 * z1 * lastCluster->GetErrY2() + z2 * z2 * firstCluster->GetErrY2()) / dZ / dZ) /
+ bendingImpact / bendingImpact + 0.1 * 0.1) * inverseBendingMomentum * inverseBendingMomentum;
+ paramCov(2,4) = - z2 * firstCluster->GetErrY2() * inverseBendingMomentum / bendingImpact / dZ;
+ paramCov(4,2) = paramCov(2,4);
+ paramCov(3,4) = - (z1 * lastCluster->GetErrY2() + z2 * firstCluster->GetErrY2()) * inverseBendingMomentum / bendingImpact / dZ / dZ;
+ paramCov(4,3) = paramCov(3,4);
- // Compute and set track parameters covariances at last cluster (as if the first cluster did not exist)
- TMatrixD paramCov2(5,5);
- paramCov2.Zero();
- // Non bending plane
- paramCov2(0,0) = paramCov1(0,0);
- paramCov2(1,1) = 100.*paramCov1(1,1);
- // Bending plane
- paramCov2(2,2) = paramCov1(2,2);
- paramCov2(3,3) = 100.*paramCov1(3,3);
- // Inverse bending momentum
- paramCov2(4,4) = paramCov1(4,4);
// Set covariances
- trackParamAtLastCluster.SetCovariances(paramCov2);
+ trackParamAtFirstCluster.SetCovariances(paramCov);
- // Flag clusters as being removable
- trackParamAtFirstCluster.SetRemovable(kTRUE);
- trackParamAtLastCluster.SetRemovable(kTRUE);
+ // Compute and set track parameters covariances at last cluster
+ paramCov(1,0) = - paramCov(1,0);
+ paramCov(0,1) = - paramCov(0,1);
+ paramCov(3,2) = - paramCov(3,2);
+ paramCov(2,3) = - paramCov(2,3);
+ paramCov(2,4) = z1 * lastCluster->GetErrY2() * inverseBendingMomentum / bendingImpact / dZ;
+ paramCov(4,2) = paramCov(2,4);
+ trackParamAtLastCluster.SetCovariances(paramCov);
// Add track parameters at clusters
AddTrackParamAtCluster(trackParamAtFirstCluster,*firstCluster);
}
- //__________________________________________________________________________
+//__________________________________________________________________________
AliMUONTrack::AliMUONTrack(const AliMUONTrack& track)
: TObject(track),
- fTrackParamAtCluster(new TClonesArray("AliMUONTrackParam",10)),
+ fTrackParamAtCluster(0x0),
fFitWithVertex(track.fFitWithVertex),
fVertexErrXY2(),
fFitWithMCS(track.fFitWithMCS),
///copy constructor
// necessary to make a copy of the objects and not only the pointers in TClonesArray.
- AliMUONTrackParam *trackParamAtCluster = (AliMUONTrackParam*) track.fTrackParamAtCluster->First();
- while (trackParamAtCluster) {
- new ((*fTrackParamAtCluster)[GetNClusters()]) AliMUONTrackParam(*trackParamAtCluster);
- trackParamAtCluster = (AliMUONTrackParam*) track.fTrackParamAtCluster->After(trackParamAtCluster);
+ if (track.fTrackParamAtCluster) {
+ fTrackParamAtCluster = new TClonesArray("AliMUONTrackParam",10);
+ AliMUONTrackParam *trackParamAtCluster = (AliMUONTrackParam*) track.fTrackParamAtCluster->First();
+ while (trackParamAtCluster) {
+ new ((*fTrackParamAtCluster)[GetNClusters()]) AliMUONTrackParam(*trackParamAtCluster);
+ trackParamAtCluster = (AliMUONTrackParam*) track.fTrackParamAtCluster->After(trackParamAtCluster);
+ }
}
// copy vertex resolution square used during the tracking procedure
// base class assignement
TObject::operator=(track);
-
- // necessary to make a copy of the objects and not only the pointers in TClonesArray.
- fTrackParamAtCluster = new TClonesArray("AliMUONTrackParam",10);
- AliMUONTrackParam *trackParamAtCluster = (AliMUONTrackParam*) track.fTrackParamAtCluster->First();
- while (trackParamAtCluster) {
- new ((*fTrackParamAtCluster)[GetNClusters()]) AliMUONTrackParam(*trackParamAtCluster);
- trackParamAtCluster = (AliMUONTrackParam*) track.fTrackParamAtCluster->After(trackParamAtCluster);
+
+ // clear memory
+ Clear();
+
+ // necessary to make a copy of the objects and not only the pointers in TClonesArray
+ if (track.fTrackParamAtCluster) {
+ fTrackParamAtCluster = new TClonesArray("AliMUONTrackParam",10);
+ AliMUONTrackParam *trackParamAtCluster = (AliMUONTrackParam*) track.fTrackParamAtCluster->First();
+ while (trackParamAtCluster) {
+ new ((*fTrackParamAtCluster)[GetNClusters()]) AliMUONTrackParam(*trackParamAtCluster);
+ trackParamAtCluster = (AliMUONTrackParam*) track.fTrackParamAtCluster->After(trackParamAtCluster);
+ }
}
// copy cluster weights matrix if any
fClusterWeightsNonBending->ResizeTo(*(track.fClusterWeightsNonBending));
*fClusterWeightsNonBending = *(track.fClusterWeightsNonBending);
} else fClusterWeightsNonBending = new TMatrixD(*(track.fClusterWeightsNonBending));
- } else if (fClusterWeightsNonBending) {
- delete fClusterWeightsNonBending;
- fClusterWeightsNonBending = 0x0;
}
// copy cluster weights matrix if any
fClusterWeightsBending->ResizeTo(*(track.fClusterWeightsBending));
*fClusterWeightsBending = *(track.fClusterWeightsBending);
} else fClusterWeightsBending = new TMatrixD(*(track.fClusterWeightsBending));
- } else if (fClusterWeightsBending) {
- delete fClusterWeightsBending;
- fClusterWeightsBending = 0x0;
}
// copy track parameters at vertex if any
if (track.fTrackParamAtVertex) {
if (fTrackParamAtVertex) *fTrackParamAtVertex = *(track.fTrackParamAtVertex);
else fTrackParamAtVertex = new AliMUONTrackParam(*(track.fTrackParamAtVertex));
- } else if (fTrackParamAtVertex) {
- delete fTrackParamAtVertex;
- fTrackParamAtVertex = 0x0;
}
fFitWithVertex = track.fFitWithVertex;
void AliMUONTrack::Clear(Option_t* opt)
{
/// Clear arrays
- fTrackParamAtCluster->Clear(opt);
+ if (opt && opt[0] == 'C' && fTrackParamAtCluster) fTrackParamAtCluster->Clear("C");
+ else {
+ delete fTrackParamAtCluster;
+ fTrackParamAtCluster = 0x0;
+ }
+ delete fClusterWeightsNonBending; fClusterWeightsNonBending = 0x0;
+ delete fClusterWeightsBending; fClusterWeightsBending = 0x0;
+ delete fTrackParamAtVertex; fTrackParamAtVertex = 0x0;
+}
+
+ //__________________________________________________________________________
+void AliMUONTrack::Reset()
+{
+ /// Reset to default values
+ SetUniqueID(0);
+ fFitWithVertex = kFALSE;
+ fVertexErrXY2[0] = 0.;
+ fVertexErrXY2[1] = 0.;
+ fFitWithMCS = kFALSE;
+ fGlobalChi2 = -1.;
+ fImproved = kFALSE;
+ fMatchTrigger = -1;
+ floTrgNum = -1;
+ fChi2MatchTrigger = 0.;
+ fTrackID = 0;
+ fHitsPatternInTrigCh = 0;
+ fLocalTrigger = 0;
+ delete fTrackParamAtCluster; fTrackParamAtCluster = 0x0;
delete fClusterWeightsNonBending; fClusterWeightsNonBending = 0x0;
delete fClusterWeightsBending; fClusterWeightsBending = 0x0;
delete fTrackParamAtVertex; fTrackParamAtVertex = 0x0;
}
+ //__________________________________________________________________________
+TClonesArray* AliMUONTrack::GetTrackParamAtCluster() const
+{
+ /// return array of track parameters at cluster (create it if needed)
+ if (!fTrackParamAtCluster) fTrackParamAtCluster = new TClonesArray("AliMUONTrackParam",10);
+ return fTrackParamAtCluster;
+}
+
//__________________________________________________________________________
void AliMUONTrack::AddTrackParamAtCluster(const AliMUONTrackParam &trackParam, AliMUONVCluster &cluster, Bool_t copy)
{
}
// add parameters to the array of track parameters
+ if (!fTrackParamAtCluster) fTrackParamAtCluster = new TClonesArray("AliMUONTrackParam",10);
AliMUONTrackParam* trackParamAtCluster = new ((*fTrackParamAtCluster)[GetNClusters()]) AliMUONTrackParam(trackParam);
// link parameters with the associated cluster or its copy
AliMUONVCluster *clusterCopy = static_cast<AliMUONVCluster*>(cluster.Clone());
trackParamAtCluster->SetClusterPtr(clusterCopy, kTRUE);
} else trackParamAtCluster->SetClusterPtr(&cluster);
+
+ // sort the array of track parameters
+ fTrackParamAtCluster->Sort();
}
//__________________________________________________________________________
void AliMUONTrack::RemoveTrackParamAtCluster(AliMUONTrackParam *trackParam)
{
/// Remove trackParam from the array of TrackParamAtCluster
- if (!fTrackParamAtCluster->Remove(trackParam)) {
+ if (!fTrackParamAtCluster || !fTrackParamAtCluster->Remove(trackParam)) {
AliWarning("object to remove does not exist in array fTrackParamAtCluster");
return;
}
trackParamAtCluster = (AliMUONTrackParam*) (fTrackParamAtCluster->After(trackParamAtCluster));
}
+}
+
+ //__________________________________________________________________________
+Bool_t AliMUONTrack::IsValid()
+{
+ /// check the validity of the current track (at least one cluster per requested station)
+
+ Int_t nClusters = GetNClusters();
+ AliMUONTrackParam *trackParam;
+ Int_t currentStation = 0, expectedStation = 0;
+
+ for (Int_t i = 0; i < nClusters; i++) {
+ trackParam = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(i);
+
+ // skip unrequested stations
+ while (expectedStation < AliMUONConstants::NTrackingSt() &&
+ !AliMUONReconstructor::GetRecoParam()->RequestStation(expectedStation)) expectedStation++;
+
+ currentStation = trackParam->GetClusterPtr()->GetChamberId()/2;
+
+ // missing station
+ if (currentStation > expectedStation) return kFALSE;
+
+ // found station --> look for next one
+ if (currentStation == expectedStation) expectedStation++;
+
+ }
+
+ return expectedStation == AliMUONConstants::NTrackingSt();
+
+}
+
+ //__________________________________________________________________________
+void AliMUONTrack::TagRemovableClusters() {
+ /// Identify clusters that can be removed from the track,
+ /// with the only requirement to have at least 1 cluster per requested station
+
+ Int_t nClusters = GetNClusters();
+ AliMUONTrackParam *trackParam, *nextTrackParam;
+ Int_t currentCh, nextCh;
+
+ // reset flags to kFALSE for all clusters in required station
+ for (Int_t i = 0; i < nClusters; i++) {
+ trackParam = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(i);
+ if (AliMUONReconstructor::GetRecoParam()->RequestStation(trackParam->GetClusterPtr()->GetChamberId()/2))
+ trackParam->SetRemovable(kFALSE);
+ else trackParam->SetRemovable(kTRUE);
+ }
+
+ // loop over track parameters
+ for (Int_t i = 0; i < nClusters; i++) {
+ trackParam = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(i);
+
+ currentCh = trackParam->GetClusterPtr()->GetChamberId();
+
+ // loop over next track parameters
+ for (Int_t j = i+1; j < nClusters; j++) {
+ nextTrackParam = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(j);
+
+ nextCh = nextTrackParam->GetClusterPtr()->GetChamberId();
+
+ // check if the 2 clusters are on the same station
+ if (nextCh/2 != currentCh/2) break;
+
+ // set clusters in the same station as being removable
+ trackParam->SetRemovable(kTRUE);
+ nextTrackParam->SetRemovable(kTRUE);
+
+ }
+
+ }
+
}
//__________________________________________________________________________
/// - Also recompute the weight matrices of the attached clusters if accountForMCS=kTRUE
/// - Assume that track parameters at each cluster are corrects
/// - Return kFALSE if computation failed
+ AliDebug(1,"Enter ComputeLocalChi2");
+
+ if (!fTrackParamAtCluster) {
+ AliWarning("no cluster attached to this track");
+ return kFALSE;
+ }
if (accountForMCS) { // Compute local chi2 taking into account multiple scattering effects
/// - Assume that track parameters at each cluster are corrects
/// - Assume the cluster weights matrices are corrects
/// - Return negative value if chi2 computation failed
+ AliDebug(1,"Enter ComputeGlobalChi2");
+
+ if (!fTrackParamAtCluster) {
+ AliWarning("no cluster attached to this track");
+ return 1.e10;
+ }
Double_t chi2 = 0.;
/// - Use the provided MCS covariance matrix if any (otherwise build it temporarily)
/// - Assume that track parameters at each cluster are corrects
/// - Return kFALSE if computation failed
+ AliDebug(1,"Enter ComputeClusterWeights1");
+
+ if (!fTrackParamAtCluster) {
+ AliWarning("no cluster attached to this track");
+ return kFALSE;
+ }
// Alocate memory
Int_t nClusters = GetNClusters();
/// accounting for multiple scattering correlations and cluster resolution
/// - Use the provided MCS covariance matrix if any (otherwise build it temporarily)
/// - Return kFALSE if computation failed
+ AliDebug(1,"Enter ComputeClusterWeights2");
// Check MCS covariance matrix and recompute it if need
Int_t nClusters = GetNClusters();
{
/// Compute the multiple scattering covariance matrix
/// (assume that track parameters at each cluster are corrects)
+ AliDebug(1,"Enter ComputeMCSCovariances");
// Reset the size of the covariance matrix if needed
Int_t nClusters = GetNClusters();
{
/// Returns the number of clusters in common between the current track ("this")
/// and the track pointed to by "track".
+ if (!fTrackParamAtCluster || !this->fTrackParamAtCluster) return 0;
Int_t clustersInCommon = 0;
AliMUONTrackParam *trackParamAtCluster1, *trackParamAtCluster2;
// Loop over clusters of first track
Double_t numberOfDegFree = (2. * GetNClusters() - 5.);
if (numberOfDegFree > 0.) return fGlobalChi2 / numberOfDegFree;
- else return 1.e10;
+ else return fGlobalChi2; // system is under-constraint
}
//__________________________________________________________________________
-Bool_t* AliMUONTrack::CompatibleTrack(AliMUONTrack *track, Double_t sigma2Cut) const
+Bool_t* AliMUONTrack::CompatibleTrack(AliMUONTrack *track, Double_t sigmaCut) const
{
/// for each chamber: return kTRUE (kFALSE) if clusters are compatible (not compatible)
AliMUONTrackParam *trackParamAtCluster1, *trackParamAtCluster2;
AliMUONVCluster *cluster1, *cluster2;
Double_t chi2, dX, dY, dZ;
- Double_t chi2Max = sigma2Cut * sigma2Cut;
+ Double_t chi2Max = sigmaCut * sigmaCut;
Double_t dZMax = 1.; // 1 cm
Bool_t *compatibleCluster = new Bool_t[AliMUONConstants::NTrackingCh()];
for ( Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++) compatibleCluster[ch] = kFALSE;
+ if (!fTrackParamAtCluster || !this->fTrackParamAtCluster) return compatibleCluster;
+
// Loop over clusters of first track
trackParamAtCluster1 = (AliMUONTrackParam*) this->fTrackParamAtCluster->First();
while (trackParamAtCluster1) {
return compatibleCluster;
}
-//__________________________________________________________________________
-AliMUONTrackParam* AliMUONTrack::GetTrackParamAtVertex()
-{
- /// return reference to track parameters at vertex (create it before if needed)
- if (!fTrackParamAtVertex) fTrackParamAtVertex = new AliMUONTrackParam();
- return fTrackParamAtVertex;
-}
-
//__________________________________________________________________________
void AliMUONTrack::SetTrackParamAtVertex(const AliMUONTrackParam* trackParam)
{
", LoTrgNum=" << setw(3) << GetLoTrgNum() <<
", Chi2-tracking-trigger=" << setw(8) << setprecision(5) << GetChi2MatchTrigger();
cout << Form(" HitTriggerPattern %x",fHitsPatternInTrigCh) << endl;
- fTrackParamAtCluster->First()->Print("FULL");
+ if (fTrackParamAtCluster) fTrackParamAtCluster->First()->Print("FULL");
}
//__________________________________________________________________________
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff