/* $Id$ */
-////////////////////////////////////
-///
+//-----------------------------------------------------------------------------
/// \class AliMUONVTrackReconstructor
/// Virtual MUON track reconstructor in ALICE (class renamed from AliMUONEventReconstructor)
///
-/// This class contains as data:
-/// * a pointer to the array of hits to be reconstructed (the event)
-/// * a pointer to the array of segments made with these hits inside each station
-/// * a pointer to the array of reconstructed tracks
+/// This class contains as data a pointer to the array of reconstructed tracks
///
/// It contains as methods, among others:
/// * EventReconstruct to build the muon tracks
/// * EventReconstructTrigger to build the trigger tracks
+/// * ValidateTracksWithTrigger to match tracker/trigger tracks
///
-/// \author Philippe Pillot
+/// Several options and adjustable parameters are available for both KALMAN and ORIGINAL
+/// tracking algorithms. They can be changed by using:
+/// AliMUONRecoParam *muonRecoParam = AliMUONRecoParam::GetLow(High)FluxParam();
+/// muonRecoParam->Set...(); // see methods in AliMUONRecoParam.h for details
+/// AliMUONReconstructor::SetRecoParam(muonRecoParam);
+///
+/// Main parameters and options are:
+/// - *fgkSigmaToCutForTracking* : quality cut used to select new clusters to be
+/// attached to the track candidate and to select good tracks.
+/// - *fgkMakeTrackCandidatesFast* : if this flag is set to 'true', the track candidates
+/// are made assuming linear propagation between stations 4 and 5.
+/// - *fgkTrackAllTracks* : according to the value of this flag, in case that several
+/// new clusters pass the quality cut, either we consider all the possibilities
+/// (duplicating tracks) or we attach only the best cluster.
+/// - *fgkRecoverTracks* : if this flag is set to 'true', we try to recover the tracks
+/// lost during the tracking by removing the worst of the 2 clusters attached in the
+/// previous station.
+/// - *fgkImproveTracks* : if this flag is set to 'true', we try to improve the quality
+/// of the tracks at the end of the tracking by removing clusters that do not pass
+/// new quality cut (the track is removed is it does not contain enough cluster anymore).
+/// - *fgkComplementTracks* : if this flag is set to 'true', we try to improve the quality
+/// of the tracks at the end of the tracking by adding potentially missing clusters
+/// (we may have 2 clusters in the same chamber because of the overlapping of detection
+/// elements, which is not handle by the tracking algorithm).
+/// - *fgkSigmaToCutForImprovement* : quality cut used when we try to improve the
+/// quality of the tracks.
///
-////////////////////////////////////
+/// \author Philippe Pillot
+//-----------------------------------------------------------------------------
#include "AliMUONVTrackReconstructor.h"
-#include "AliMUONData.h"
+
#include "AliMUONConstants.h"
-#include "AliMUONHitForRec.h"
#include "AliMUONObjectPair.h"
#include "AliMUONTriggerTrack.h"
#include "AliMUONTriggerCircuit.h"
#include "AliMUONTrack.h"
#include "AliMUONTrackParam.h"
#include "AliMUONTrackExtrap.h"
+#include "AliMUONTrackHitPattern.h"
+#include "AliMUONVTrackStore.h"
+#include "AliMUONVClusterStore.h"
+#include "AliMUONVCluster.h"
+#include "AliMUONVTriggerStore.h"
+#include "AliMUONVTriggerTrackStore.h"
+#include "AliMpDEManager.h"
#include "AliLog.h"
+#include "AliCodeTimer.h"
#include "AliTracker.h"
-#include <Riostream.h>
#include <TClonesArray.h>
#include <TMath.h>
+#include <TMatrixD.h>
+
+#include <Riostream.h>
/// \cond CLASSIMP
ClassImp(AliMUONVTrackReconstructor) // Class implementation in ROOT context
/// \endcond
-//************* Defaults parameters for reconstruction
-const Double_t AliMUONVTrackReconstructor::fgkDefaultMinBendingMomentum = 3.0;
-const Double_t AliMUONVTrackReconstructor::fgkDefaultMaxBendingMomentum = 3000.0;
-const Double_t AliMUONVTrackReconstructor::fgkDefaultBendingResolution = 0.01;
-const Double_t AliMUONVTrackReconstructor::fgkDefaultNonBendingResolution = 0.144;
-const Double_t AliMUONVTrackReconstructor::fgkDefaultBendingVertexDispersion = 10.;
-const Double_t AliMUONVTrackReconstructor::fgkDefaultNonBendingVertexDispersion = 10.;
-const Double_t AliMUONVTrackReconstructor::fgkDefaultMaxNormChi2MatchTrigger = 16.0;
-
-//__________________________________________________________________________
-AliMUONVTrackReconstructor::AliMUONVTrackReconstructor(AliMUONData* data)
+ //__________________________________________________________________________
+AliMUONVTrackReconstructor::AliMUONVTrackReconstructor()
: TObject(),
- fMinBendingMomentum(fgkDefaultMinBendingMomentum),
- fMaxBendingMomentum(fgkDefaultMaxBendingMomentum),
- fBendingResolution(fgkDefaultBendingResolution),
- fNonBendingResolution(fgkDefaultNonBendingResolution),
- fBendingVertexDispersion(fgkDefaultBendingVertexDispersion),
- fNonBendingVertexDispersion(fgkDefaultNonBendingVertexDispersion),
- fMaxNormChi2MatchTrigger(fgkDefaultMaxNormChi2MatchTrigger),
- fHitsForRecPtr(0x0),
- fNHitsForRec(0),
- fNHitsForRecPerChamber(0x0),
- fIndexOfFirstHitForRecPerChamber(0x0),
fRecTracksPtr(0x0),
- fNRecTracks(0),
- fMUONData(data),
- fTriggerTrack(new AliMUONTriggerTrack()),
- fTriggerCircuit(0x0)
+ fNRecTracks(0)
{
/// Constructor for class AliMUONVTrackReconstructor
- fNHitsForRecPerChamber = new Int_t[AliMUONConstants::NTrackingCh()];
- fIndexOfFirstHitForRecPerChamber = new Int_t[AliMUONConstants::NTrackingCh()];
-
- // Memory allocation for the TClonesArray of hits for reconstruction
- // Is 10000 the right size ????
- fHitsForRecPtr = new TClonesArray("AliMUONHitForRec", 10000);
-
+
+ // Memory allocation for the TClonesArray of reconstructed tracks
+ fRecTracksPtr = new TClonesArray("AliMUONTrack", 100);
+
// set the magnetic field for track extrapolations
const AliMagF* kField = AliTracker::GetFieldMap();
if (!kField) AliFatal("No field available");
}
//__________________________________________________________________________
-AliMUONVTrackReconstructor::~AliMUONVTrackReconstructor(void)
+AliMUONVTrackReconstructor::~AliMUONVTrackReconstructor()
{
/// Destructor for class AliMUONVTrackReconstructor
- delete [] fNHitsForRecPerChamber;
- delete [] fIndexOfFirstHitForRecPerChamber;
- delete fTriggerTrack;
- delete fHitsForRecPtr;
+ delete fRecTracksPtr;
}
//__________________________________________________________________________
-void AliMUONVTrackReconstructor::EventReconstruct(void)
+void AliMUONVTrackReconstructor::ResetTracks()
+{
+ /// To reset the TClonesArray of reconstructed tracks
+ if (fRecTracksPtr) fRecTracksPtr->Clear("C");
+ fNRecTracks = 0;
+ return;
+}
+
+ //__________________________________________________________________________
+void AliMUONVTrackReconstructor::EventReconstruct(const AliMUONVClusterStore& clusterStore, AliMUONVTrackStore& trackStore)
{
/// To reconstruct one event
- AliDebug(1,"Enter EventReconstruct");
+ AliDebug(1,"");
+ AliCodeTimerAuto("");
+
+ // Reset array of tracks
+ ResetTracks();
- ResetTracks(); //AZ
- ResetHitsForRec(); //AZ
- AddHitsForRecFromRawClusters();
- MakeTracks();
- if (fMUONData->IsTriggerTrackBranchesInTree())
- ValidateTracksWithTrigger();
+ // Look for candidates from at least 3 aligned points in stations(1..) 4 and 5
+ MakeTrackCandidates(clusterStore);
+
+ // Stop tracking if no candidate found
+ if (fRecTracksPtr->GetEntriesFast() == 0) return;
+
+ // Follow tracks in stations(1..) 3, 2 and 1
+ FollowTracks(clusterStore);
+
+ // Complement the reconstructed tracks
+ if (AliMUONReconstructor::GetRecoParam()->ComplementTracks()) ComplementTracks(clusterStore);
+
+ // Improve the reconstructed tracks
+ if (AliMUONReconstructor::GetRecoParam()->ImproveTracks()) ImproveTracks();
+
+ // Remove double tracks
+ RemoveDoubleTracks();
+
+ // Fill AliMUONTrack data members
+ Finalize();
// 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);
- fMUONData->AddRecTrack(*track);
+ trackStore.Add(*track);
}
}
//__________________________________________________________________________
-void AliMUONVTrackReconstructor::ResetTracks(void)
+TClonesArray* AliMUONVTrackReconstructor::MakeSegmentsInStation(const AliMUONVClusterStore& clusterStore, Int_t station)
{
- /// To reset the TClonesArray of reconstructed tracks
- if (fRecTracksPtr) fRecTracksPtr->Delete();
- // Delete in order that the Track destructors are called,
- // hence the space for the TClonesArray of pointers to TrackHit's is freed
- fNRecTracks = 0;
- return;
+ /// To make the list of segments in station(0..) "Station" from the list of clusters to be reconstructed.
+ /// Return a new TClonesArray of segments.
+ /// It is the responsibility of the user to delete it afterward.
+ AliDebug(1,Form("Enter MakeSegmentsPerStation (1..) %d",station+1));
+
+ AliMUONVCluster *cluster1, *cluster2;
+ AliMUONObjectPair *segment;
+ Double_t bendingSlope = 0, impactParam = 0., bendingMomentum = 0.; // to avoid compilation warning
+ Int_t ch1 = 2 * station;
+ Int_t ch2 = ch1 + 1;
+
+ // Create iterators to loop over clusters in both chambers
+ TIter nextInCh1(clusterStore.CreateChamberIterator(ch1,ch1));
+ TIter nextInCh2(clusterStore.CreateChamberIterator(ch2,ch2));
+
+ // list of segments
+ TClonesArray *segments = new TClonesArray("AliMUONObjectPair", 100);
+ segments->SetOwner(kTRUE);
+
+ // Loop over clusters in the first chamber of the station
+ while ( ( cluster1 = static_cast<AliMUONVCluster*>(nextInCh1()) ) ) {
+
+ // reset cluster iterator of chamber 2
+ nextInCh2.Reset();
+
+ // Loop over clusters in the second chamber of the station
+ while ( ( cluster2 = static_cast<AliMUONVCluster*>(nextInCh2()) ) ) {
+
+ // bending slope
+ bendingSlope = (cluster1->GetY() - cluster2->GetY()) / (cluster1->GetZ() - cluster2->GetZ());
+
+ // impact parameter
+ impactParam = cluster1->GetY() - cluster1->GetZ() * bendingSlope;
+
+ // absolute value of bending momentum
+ bendingMomentum = TMath::Abs(AliMUONTrackExtrap::GetBendingMomentumFromImpactParam(impactParam));
+
+ // check for bending momentum within tolerances
+ if ((bendingMomentum < AliMUONReconstructor::GetRecoParam()->GetMaxBendingMomentum()) &&
+ (bendingMomentum > AliMUONReconstructor::GetRecoParam()->GetMinBendingMomentum())) {
+
+ // make new segment
+ segment = new ((*segments)[segments->GetLast()+1]) AliMUONObjectPair(cluster1, cluster2, kFALSE, kFALSE);
+
+ // Printout for debug
+ if (AliLog::GetGlobalDebugLevel() > 1) {
+ cout << "segmentIndex(0...): " << segments->GetLast() << endl;
+ segment->Dump();
+ cout << "Cluster in first chamber" << endl;
+ cluster1->Print();
+ cout << "Cluster in second chamber" << endl;
+ cluster2->Print();
+ }
+
+ }
+
+ }
+
+ }
+
+ // Printout for debug
+ AliDebug(1,Form("Station: %d NSegments: %d ", station+1, segments->GetEntriesFast()));
+
+ return segments;
}
//__________________________________________________________________________
-void AliMUONVTrackReconstructor::ResetHitsForRec(void)
+void AliMUONVTrackReconstructor::RemoveIdenticalTracks()
{
- /// To reset the array and the number of HitsForRec,
- /// and also the number of HitsForRec
- /// and the index of the first HitForRec per chamber
- if (fHitsForRecPtr) fHitsForRecPtr->Delete();
- fNHitsForRec = 0;
- for (Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++)
- fNHitsForRecPerChamber[ch] = fIndexOfFirstHitForRecPerChamber[ch] = 0;
+ /// To remove identical tracks:
+ /// Tracks are considered identical if they have all their clusters in common.
+ /// One keeps the track with the larger number of clusters if need be
+ AliMUONTrack *track1, *track2, *trackToRemove;
+ Int_t clustersInCommon, nClusters1, nClusters2;
+ Bool_t removedTrack1;
+ // Loop over first track of the pair
+ track1 = (AliMUONTrack*) fRecTracksPtr->First();
+ while (track1) {
+ removedTrack1 = kFALSE;
+ nClusters1 = track1->GetNClusters();
+ // 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
+ clustersInCommon = track1->ClustersInCommon(track2);
+ // check for identical tracks
+ if ((clustersInCommon == nClusters1) || (clustersInCommon == nClusters2)) {
+ // decide which track to remove
+ if (nClusters2 > nClusters1) {
+ // 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 {
+ // 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 track2 = (AliMUONTrack*) fRecTracksPtr->After(track2);
+ } // track2
+ if (removedTrack1) continue;
+ track1 = (AliMUONTrack*) fRecTracksPtr->After(track1);
+ } // track1
return;
}
//__________________________________________________________________________
-void AliMUONVTrackReconstructor::SortHitsForRecWithIncreasingChamber()
+void AliMUONVTrackReconstructor::RemoveDoubleTracks()
{
- /// Sort HitsForRec's in increasing order with respect to chamber number.
- /// Uses the function "Compare".
- /// Update the information for HitsForRec per chamber too.
- Int_t ch, nhits, prevch;
- fHitsForRecPtr->Sort();
- for (ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++) {
- fNHitsForRecPerChamber[ch] = 0;
- fIndexOfFirstHitForRecPerChamber[ch] = 0;
- }
- prevch = 0; // previous chamber
- nhits = 0; // number of hits in current chamber
- // Loop over HitsForRec
- for (Int_t hit = 0; hit < fNHitsForRec; hit++) {
- // chamber number (0...)
- ch = ((AliMUONHitForRec*) ((*fHitsForRecPtr)[hit]))->GetChamberNumber();
- // increment number of hits in current chamber
- (fNHitsForRecPerChamber[ch])++;
- // update index of first HitForRec in current chamber
- // if chamber number different from previous one
- if (ch != prevch) {
- fIndexOfFirstHitForRecPerChamber[ch] = hit;
- prevch = ch;
- }
- }
+ /// To remove double tracks:
+ /// Tracks are considered identical if more than half of the clusters of the track
+ /// which has the smaller number of clusters are in common with the other track.
+ /// 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;
+ // Loop over first track of the pair
+ track1 = (AliMUONTrack*) fRecTracksPtr->First();
+ while (track1) {
+ removedTrack1 = kFALSE;
+ nClusters1 = track1->GetNClusters();
+ // 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
+ clustersInCommon = track1->ClustersInCommon(track2);
+ // check for identical tracks
+ if (((nClusters1 < nClusters2) && (2 * clustersInCommon > nClusters1)) || (2 * clustersInCommon > nClusters2)) {
+ // 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;
}
//__________________________________________________________________________
-TClonesArray* AliMUONVTrackReconstructor::MakeSegmentsInStation(Int_t station)
+Double_t AliMUONVTrackReconstructor::TryOneCluster(const AliMUONTrackParam &trackParam, AliMUONVCluster* cluster,
+ AliMUONTrackParam &trackParamAtCluster, Bool_t updatePropagator)
{
- /// To make the list of segments in station(0..) "Station" from the list of hits to be reconstructed.
- /// Return a new TClonesArray of segments.
- /// It is the responsibility of the user to delete it afterward.
- AliDebug(1,Form("Enter MakeSegmentsPerStation (0...) %d",station));
+/// Test the compatibility between the track and the cluster (using trackParam's covariance matrix):
+/// return the corresponding Chi2
+/// return trackParamAtCluster
- AliMUONHitForRec *hit1Ptr, *hit2Ptr;
- AliMUONObjectPair *segment;
- Double_t bendingSlope = 0, impactParam = 0., bendingMomentum = 0.; // to avoid compilation warning
- // first and second chambers (0...) in the station
- Int_t ch1 = 2 * station;
- Int_t ch2 = ch1 + 1;
- // list of segments
- TClonesArray *segments = new TClonesArray("AliMUONObjectPair", fNHitsForRecPerChamber[ch2]);
- // Loop over HitForRec's in the first chamber of the station
- for (Int_t hit1 = fIndexOfFirstHitForRecPerChamber[ch1];
- hit1 < fIndexOfFirstHitForRecPerChamber[ch1] + fNHitsForRecPerChamber[ch1];
- hit1++) {
- // pointer to the HitForRec
- hit1Ptr = (AliMUONHitForRec*) ((*fHitsForRecPtr)[hit1]);
- // Loop over HitsForRec's in the second chamber of the station
- for (Int_t hit2 = fIndexOfFirstHitForRecPerChamber[ch2];
- hit2 < fIndexOfFirstHitForRecPerChamber[ch2] + fNHitsForRecPerChamber[ch2];
- hit2++) {
- // pointer to the HitForRec
- hit2Ptr = (AliMUONHitForRec*) ((*fHitsForRecPtr)[hit2]);
- if ( hit1Ptr->GetZ() - hit2Ptr->GetZ() != 0. ) {
- // bending slope
- bendingSlope = (hit1Ptr->GetBendingCoor() - hit2Ptr->GetBendingCoor()) / (hit1Ptr->GetZ() - hit2Ptr->GetZ());
- // impact parameter
- impactParam = hit1Ptr->GetBendingCoor() - hit1Ptr->GetZ() * bendingSlope;
- // absolute value of bending momentum
- bendingMomentum = TMath::Abs(AliMUONTrackExtrap::GetBendingMomentumFromImpactParam(impactParam));
- } else {
- AliWarning("hit1Ptr->GetZ() = hit2Ptr->GetZ(): no segment created");
- continue;
- }
- // check for bending momentum within tolerances
- if ((bendingMomentum < fMaxBendingMomentum) && (bendingMomentum > fMinBendingMomentum)) {
- // make new segment
- segment = new ((*segments)[segments->GetLast()+1]) AliMUONObjectPair(hit1Ptr, hit2Ptr, kFALSE, kFALSE);
- if (AliLog::GetGlobalDebugLevel() > 1) {
- cout << "segmentIndex(0...): " << segments->GetLast() << endl;
- segment->Dump();
- cout << "HitForRec in first chamber" << endl;
- hit1Ptr->Dump();
- cout << "HitForRec in second chamber" << endl;
- hit2Ptr->Dump();
+ // extrapolate track parameters and covariances at the z position of the tested cluster
+ trackParamAtCluster = trackParam;
+ AliMUONTrackExtrap::ExtrapToZCov(&trackParamAtCluster, cluster->GetZ(), updatePropagator);
+
+ // set pointer to cluster into trackParamAtCluster
+ trackParamAtCluster.SetClusterPtr(cluster);
+
+ // Set differences between trackParam and cluster in the bending and non bending directions
+ Double_t dX = cluster->GetX() - trackParamAtCluster.GetNonBendingCoor();
+ Double_t dY = cluster->GetY() - trackParamAtCluster.GetBendingCoor();
+
+ // Calculate errors and covariances
+ const TMatrixD& kParamCov = trackParamAtCluster.GetCovariances();
+ Double_t sigmaX2 = kParamCov(0,0) + cluster->GetErrX2();
+ Double_t sigmaY2 = kParamCov(2,2) + cluster->GetErrY2();
+
+ // Compute chi2
+ return dX * dX / sigmaX2 + dY * dY / sigmaY2;
+
+}
+
+ //__________________________________________________________________________
+Bool_t AliMUONVTrackReconstructor::TryOneClusterFast(const AliMUONTrackParam &trackParam, AliMUONVCluster* cluster)
+{
+/// Test the compatibility between the track and the cluster within a wide fix window
+/// assuming linear propagation of the track:
+/// return kTRUE if they are compatibles
+
+ Double_t dZ = cluster->GetZ() - trackParam.GetZ();
+ Double_t dX = cluster->GetX() - (trackParam.GetNonBendingCoor() + trackParam.GetNonBendingSlope() * dZ);
+ Double_t dY = cluster->GetY() - (trackParam.GetBendingCoor() + trackParam.GetBendingSlope() * dZ);
+
+ if (TMath::Abs(dX) > AliMUONReconstructor::GetRecoParam()->GetMaxNonBendingDistanceToTrack() ||
+ TMath::Abs(dY) > AliMUONReconstructor::GetRecoParam()->GetMaxBendingDistanceToTrack()) return kFALSE;
+
+ return kTRUE;
+
+}
+
+ //__________________________________________________________________________
+Double_t AliMUONVTrackReconstructor::TryTwoClustersFast(const AliMUONTrackParam &trackParamAtCluster1, AliMUONVCluster* cluster2,
+ AliMUONTrackParam &trackParamAtCluster2)
+{
+/// Test the compatibility between the track and the 2 clusters together (using trackParam's covariance matrix)
+/// assuming linear propagation between the two clusters:
+/// return the corresponding Chi2 accounting for covariances between the 2 clusters
+/// return trackParamAtCluster2
+
+ // extrapolate linearly track parameters and covariances at the z position of the second cluster
+ trackParamAtCluster2 = trackParamAtCluster1;
+ AliMUONTrackExtrap::LinearExtrapToZ(&trackParamAtCluster2, cluster2->GetZ());
+
+ // set pointer to cluster2 into trackParamAtCluster2
+ trackParamAtCluster2.SetClusterPtr(cluster2);
+
+ // Set differences between track and clusters in the bending and non bending directions
+ AliMUONVCluster* cluster1 = trackParamAtCluster1.GetClusterPtr();
+ Double_t dX1 = cluster1->GetX() - trackParamAtCluster1.GetNonBendingCoor();
+ Double_t dX2 = cluster2->GetX() - trackParamAtCluster2.GetNonBendingCoor();
+ Double_t dY1 = cluster1->GetY() - trackParamAtCluster1.GetBendingCoor();
+ Double_t dY2 = cluster2->GetY() - trackParamAtCluster2.GetBendingCoor();
+
+ // Calculate errors and covariances
+ const TMatrixD& kParamCov1 = trackParamAtCluster1.GetCovariances();
+ const TMatrixD& kParamCov2 = trackParamAtCluster2.GetCovariances();
+ Double_t dZ = trackParamAtCluster2.GetZ() - trackParamAtCluster1.GetZ();
+ Double_t sigma2X1 = kParamCov1(0,0) + cluster1->GetErrX2();
+ Double_t sigma2X2 = kParamCov2(0,0) + cluster2->GetErrX2();
+ Double_t covX1X2 = kParamCov1(0,0) + dZ * kParamCov1(0,1);
+ Double_t sigma2Y1 = kParamCov1(2,2) + cluster1->GetErrY2();
+ Double_t sigma2Y2 = kParamCov2(2,2) + cluster2->GetErrY2();
+ Double_t covY1Y2 = kParamCov1(2,2) + dZ * kParamCov1(2,3);
+
+ // Compute chi2
+ Double_t detX = sigma2X1 * sigma2X2 - covX1X2 * covX1X2;
+ Double_t detY = sigma2Y1 * sigma2Y2 - covY1Y2 * covY1Y2;
+ if (detX == 0. || detY == 0.) return 1.e10;
+ return (dX1 * dX1 * sigma2X2 + dX2 * dX2 * sigma2X1 - 2. * dX1 * dX2 * covX1X2) / detX
+ + (dY1 * dY1 * sigma2Y2 + dY2 * dY2 * sigma2Y1 - 2. * dY1 * dY2 * covY1Y2) / detY;
+
+}
+
+ //__________________________________________________________________________
+Bool_t AliMUONVTrackReconstructor::FollowLinearTrackInStation(AliMUONTrack &trackCandidate, const AliMUONVClusterStore& clusterStore,
+ Int_t nextStation)
+{
+ /// Follow trackCandidate in station(0..) nextStation assuming linear propagation, and search for compatible cluster(s)
+ /// Keep all possibilities or only the best one(s) according to the flag fgkTrackAllTracks:
+ /// kTRUE: duplicate "trackCandidate" if there are several possibilities and add the new tracks at the end of
+ /// fRecTracksPtr to avoid conficts with other track candidates at this current stage of the tracking procedure.
+ /// Remove the obsolete "trackCandidate" at the end.
+ /// kFALSE: add only the best cluster(s) to the "trackCandidate". Try to add a couple of clusters in priority.
+ /// return kTRUE if new cluster(s) have been found (otherwise return kFALSE)
+ AliDebug(1,Form("Enter FollowLinearTrackInStation(1..) %d", nextStation+1));
+
+ // Order the chamber according to the propagation direction (tracking starts with chamber 2):
+ // - nextStation == station(1...) 5 => forward propagation
+ // - nextStation < station(1...) 5 => backward propagation
+ Int_t ch1, ch2;
+ if (nextStation==4) {
+ ch1 = 2*nextStation+1;
+ ch2 = 2*nextStation;
+ } else {
+ ch1 = 2*nextStation;
+ ch2 = 2*nextStation+1;
+ }
+
+ Double_t chi2WithOneCluster = 1.e10;
+ Double_t chi2WithTwoClusters = 1.e10;
+ Double_t maxChi2WithOneCluster = 2. * AliMUONReconstructor::GetRecoParam()->GetSigmaCutForTracking() *
+ AliMUONReconstructor::GetRecoParam()->GetSigmaCutForTracking(); // 2 because 2 quantities in chi2
+ Double_t maxChi2WithTwoClusters = 4. * AliMUONReconstructor::GetRecoParam()->GetSigmaCutForTracking() *
+ AliMUONReconstructor::GetRecoParam()->GetSigmaCutForTracking(); // 4 because 4 quantities in chi2
+ Double_t bestChi2WithOneCluster = maxChi2WithOneCluster;
+ Double_t bestChi2WithTwoClusters = maxChi2WithTwoClusters;
+ Bool_t foundOneCluster = kFALSE;
+ Bool_t foundTwoClusters = kFALSE;
+ AliMUONTrack *newTrack = 0x0;
+ AliMUONVCluster *clusterCh1, *clusterCh2;
+ AliMUONTrackParam extrapTrackParamAtCluster1;
+ AliMUONTrackParam extrapTrackParamAtCluster2;
+ AliMUONTrackParam bestTrackParamAtCluster1;
+ AliMUONTrackParam bestTrackParamAtCluster2;
+
+ Int_t nClusters = clusterStore.GetSize();
+ Bool_t *clusterCh1Used = new Bool_t[nClusters];
+ for (Int_t i = 0; i < nClusters; i++) clusterCh1Used[i] = kFALSE;
+ Int_t iCluster1;
+
+ // Get track parameters
+ AliMUONTrackParam trackParam(*(AliMUONTrackParam*)trackCandidate.GetTrackParamAtCluster()->First());
+
+ // Add MCS effect
+ AliMUONTrackExtrap::AddMCSEffect(&trackParam,AliMUONConstants::ChamberThicknessInX0(),1.);
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONVTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowLinearTrackInStation: look for clusters in chamber(1..): " << ch2+1 << endl;
+ }
+
+ // Create iterators to loop over clusters in both chambers
+ TIter nextInCh1(clusterStore.CreateChamberIterator(ch1,ch1));
+ TIter nextInCh2(clusterStore.CreateChamberIterator(ch2,ch2));
+
+ // look for candidates in chamber 2
+ while ( ( clusterCh2 = static_cast<AliMUONVCluster*>(nextInCh2()) ) ) {
+
+ // try to add the current cluster fast
+ if (!TryOneClusterFast(trackParam, clusterCh2)) continue;
+
+ // try to add the current cluster accuratly
+ extrapTrackParamAtCluster2 = trackParam;
+ AliMUONTrackExtrap::LinearExtrapToZ(&extrapTrackParamAtCluster2, clusterCh2->GetZ());
+ chi2WithOneCluster = TryOneCluster(extrapTrackParamAtCluster2, clusterCh2, extrapTrackParamAtCluster2);
+
+ // if good chi2 then try to attach a cluster in the other chamber too
+ if (chi2WithOneCluster < maxChi2WithOneCluster) {
+ Bool_t foundSecondCluster = kFALSE;
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONVTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowLinearTrackInStation: found one cluster in chamber(1..): " << ch2+1
+ << " (Chi2 = " << chi2WithOneCluster << ")" << endl;
+ cout << " look for second clusters in chamber(1..): " << ch1+1 << " ..." << endl;
+ }
+
+ // add MCS effect
+ AliMUONTrackExtrap::AddMCSEffect(&extrapTrackParamAtCluster2,AliMUONConstants::ChamberThicknessInX0(),1.);
+
+ // reset cluster iterator of chamber 1
+ nextInCh1.Reset();
+ iCluster1 = -1;
+
+ // look for second candidates in chamber 1
+ while ( ( clusterCh1 = static_cast<AliMUONVCluster*>(nextInCh1()) ) ) {
+ iCluster1++;
+
+ // try to add the current cluster fast
+ if (!TryOneClusterFast(extrapTrackParamAtCluster2, clusterCh1)) continue;
+
+ // try to add the current cluster in addition to the one found in the previous chamber
+ chi2WithTwoClusters = TryTwoClustersFast(extrapTrackParamAtCluster2, clusterCh1, extrapTrackParamAtCluster1);
+
+ // if good chi2 then consider to add the 2 clusters to the "trackCandidate"
+ if (chi2WithTwoClusters < maxChi2WithTwoClusters) {
+ foundSecondCluster = kTRUE;
+ foundTwoClusters = kTRUE;
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONVTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowLinearTrackInStation: found one cluster in chamber(1..): " << ch1+1
+ << " (Chi2 = " << chi2WithTwoClusters << ")" << endl;
+ }
+
+ if (AliMUONReconstructor::GetRecoParam()->TrackAllTracks()) {
+ // copy trackCandidate into a new track put at the end of fRecTracksPtr and add the new clusters
+ newTrack = new ((*fRecTracksPtr)[fRecTracksPtr->GetLast()+1]) AliMUONTrack(trackCandidate);
+ extrapTrackParamAtCluster1.SetRemovable(kTRUE);
+ newTrack->AddTrackParamAtCluster(extrapTrackParamAtCluster1,*clusterCh1);
+ extrapTrackParamAtCluster2.SetRemovable(kTRUE);
+ newTrack->AddTrackParamAtCluster(extrapTrackParamAtCluster2,*clusterCh2);
+ newTrack->GetTrackParamAtCluster()->Sort();
+ fNRecTracks++;
+
+ // Tag clusterCh1 as used
+ clusterCh1Used[iCluster1] = kTRUE;
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONVTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowLinearTrackInStation: added two clusters in station(1..): " << nextStation+1 << endl;
+ if (AliLog::GetGlobalDebugLevel() >= 3) newTrack->RecursiveDump();
+ }
+
+ } else if (chi2WithTwoClusters < bestChi2WithTwoClusters) {
+ // keep track of the best couple of clusters
+ bestChi2WithTwoClusters = chi2WithTwoClusters;
+ bestTrackParamAtCluster1 = extrapTrackParamAtCluster1;
+ bestTrackParamAtCluster2 = extrapTrackParamAtCluster2;
+ }
+
}
+
}
- } //for (Int_t hit2
- } // for (Int_t hit1...
- AliDebug(1,Form("Station: %d NSegments: %d ", station, segments->GetEntriesFast()));
- return segments;
+
+ // if no cluster found in chamber1 then consider to add clusterCh2 only
+ if (!foundSecondCluster) {
+ foundOneCluster = kTRUE;
+
+ if (AliMUONReconstructor::GetRecoParam()->TrackAllTracks()) {
+ // copy trackCandidate into a new track put at the end of fRecTracksPtr and add the new cluster
+ newTrack = new ((*fRecTracksPtr)[fRecTracksPtr->GetLast()+1]) AliMUONTrack(trackCandidate);
+ extrapTrackParamAtCluster2.SetRemovable(kFALSE);
+ newTrack->AddTrackParamAtCluster(extrapTrackParamAtCluster2,*clusterCh2);
+ newTrack->GetTrackParamAtCluster()->Sort();
+ fNRecTracks++;
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONVTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowLinearTrackInStation: added one cluster in chamber(1..): " << ch2+1 << endl;
+ if (AliLog::GetGlobalDebugLevel() >= 3) newTrack->RecursiveDump();
+ }
+
+ } else if (!foundTwoClusters && chi2WithOneCluster < bestChi2WithOneCluster) {
+ // keep track of the best cluster except if a couple of clusters has already been found
+ bestChi2WithOneCluster = chi2WithOneCluster;
+ bestTrackParamAtCluster1 = extrapTrackParamAtCluster2;
+ }
+
+ }
+
+ }
+
+ }
+
+ // look for candidates in chamber 1 not already attached to a track
+ // if we want to keep all possible tracks or if no good couple of clusters has been found
+ if (AliMUONReconstructor::GetRecoParam()->TrackAllTracks() || !foundTwoClusters) {
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONVTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowLinearTrackInStation: look for single cluster in chamber(1..): " << ch1+1 << endl;
+ }
+
+ //Extrapolate trackCandidate to chamber "ch2"
+ AliMUONTrackExtrap::LinearExtrapToZ(&trackParam, AliMUONConstants::DefaultChamberZ(ch2));
+
+ // add MCS effect for next step
+ AliMUONTrackExtrap::AddMCSEffect(&trackParam,AliMUONConstants::ChamberThicknessInX0(),1.);
+
+ // reset cluster iterator of chamber 1
+ nextInCh1.Reset();
+ iCluster1 = -1;
+
+ // look for second candidates in chamber 1
+ while ( ( clusterCh1 = static_cast<AliMUONVCluster*>(nextInCh1()) ) ) {
+ iCluster1++;
+
+ if (clusterCh1Used[iCluster1]) continue; // Skip clusters already used
+
+ // try to add the current cluster fast
+ if (!TryOneClusterFast(trackParam, clusterCh1)) continue;
+
+ // try to add the current cluster accuratly
+ extrapTrackParamAtCluster1 = trackParam;
+ AliMUONTrackExtrap::LinearExtrapToZ(&extrapTrackParamAtCluster1, clusterCh1->GetZ());
+ chi2WithOneCluster = TryOneCluster(extrapTrackParamAtCluster1, clusterCh1, extrapTrackParamAtCluster1);
+
+ // if good chi2 then consider to add clusterCh1
+ // We do not try to attach a cluster in the other chamber too since it has already been done above
+ if (chi2WithOneCluster < maxChi2WithOneCluster) {
+ foundOneCluster = kTRUE;
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONVTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowLinearTrackInStation: found one cluster in chamber(1..): " << ch1+1
+ << " (Chi2 = " << chi2WithOneCluster << ")" << endl;
+ }
+
+ if (AliMUONReconstructor::GetRecoParam()->TrackAllTracks()) {
+ // copy trackCandidate into a new track put at the end of fRecTracksPtr and add the new cluster
+ newTrack = new ((*fRecTracksPtr)[fRecTracksPtr->GetLast()+1]) AliMUONTrack(trackCandidate);
+ extrapTrackParamAtCluster1.SetRemovable(kFALSE);
+ newTrack->AddTrackParamAtCluster(extrapTrackParamAtCluster1,*clusterCh1);
+ newTrack->GetTrackParamAtCluster()->Sort();
+ fNRecTracks++;
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONVTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowLinearTrackInStation: added one cluster in chamber(1..): " << ch1+1 << endl;
+ if (AliLog::GetGlobalDebugLevel() >= 3) newTrack->RecursiveDump();
+ }
+
+ } else if (chi2WithOneCluster < bestChi2WithOneCluster) {
+ // keep track of the best cluster except if a couple of clusters has already been found
+ bestChi2WithOneCluster = chi2WithOneCluster;
+ bestTrackParamAtCluster1 = extrapTrackParamAtCluster1;
+ }
+
+ }
+
+ }
+
+ }
+
+ // fill out the best track if required else clean up the fRecTracksPtr array
+ if (!AliMUONReconstructor::GetRecoParam()->TrackAllTracks()) {
+ if (foundTwoClusters) {
+ bestTrackParamAtCluster1.SetRemovable(kTRUE);
+ trackCandidate.AddTrackParamAtCluster(bestTrackParamAtCluster1,*(bestTrackParamAtCluster1.GetClusterPtr()));
+ bestTrackParamAtCluster2.SetRemovable(kTRUE);
+ trackCandidate.AddTrackParamAtCluster(bestTrackParamAtCluster2,*(bestTrackParamAtCluster2.GetClusterPtr()));
+ trackCandidate.GetTrackParamAtCluster()->Sort();
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONVTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowLinearTrackInStation: added the two best clusters in station(1..): " << nextStation+1 << endl;
+ if (AliLog::GetGlobalDebugLevel() >= 3) newTrack->RecursiveDump();
+ }
+
+ } else if (foundOneCluster) {
+ bestTrackParamAtCluster1.SetRemovable(kFALSE);
+ trackCandidate.AddTrackParamAtCluster(bestTrackParamAtCluster1,*(bestTrackParamAtCluster1.GetClusterPtr()));
+ trackCandidate.GetTrackParamAtCluster()->Sort();
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONVTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowLinearTrackInStation: added the best cluster in chamber(1..): " << bestTrackParamAtCluster1.GetClusterPtr()->GetChamberId()+1 << endl;
+ if (AliLog::GetGlobalDebugLevel() >= 3) newTrack->RecursiveDump();
+ }
+
+ } else {
+ delete [] clusterCh1Used;
+ return kFALSE;
+ }
+
+ } else if (foundOneCluster || foundTwoClusters) {
+
+ // remove obsolete track
+ fRecTracksPtr->Remove(&trackCandidate);
+ fNRecTracks--;
+
+ } else {
+ delete [] clusterCh1Used;
+ return kFALSE;
+ }
+
+ delete [] clusterCh1Used;
+ return kTRUE;
+
}
//__________________________________________________________________________
-void AliMUONVTrackReconstructor::ValidateTracksWithTrigger(void)
+void AliMUONVTrackReconstructor::ValidateTracksWithTrigger(AliMUONVTrackStore& trackStore,
+ const AliMUONVTriggerTrackStore& triggerTrackStore,
+ const AliMUONVTriggerStore& triggerStore,
+ const AliMUONTrackHitPattern& trackHitPattern)
{
/// Try to match track from tracking system with trigger track
- static const Double_t kDistSigma[3]={1,1,0.02}; // sigma of distributions (trigger-track) X,Y,slopeY
-
- AliMUONTrack *track;
- AliMUONTrackParam trackParam;
- AliMUONTriggerTrack *triggerTrack;
+ AliCodeTimerAuto("");
- fMUONData->SetTreeAddress("RL");
- fMUONData->GetRecTriggerTracks();
- TClonesArray *recTriggerTracks = fMUONData->RecTriggerTracks();
+ static const Double_t kDistSigma[3]={1,1,0.02}; // sigma of distributions (trigger-track) X,Y,slopeY
- Bool_t matchTrigger;
- Int_t loTrgNum;
+ Int_t matchTrigger;
+ Int_t loTrgNum(-1);
Double_t distTriggerTrack[3];
Double_t xTrack, yTrack, ySlopeTrack, chi2MatchTrigger, minChi2MatchTrigger, chi2;
+
+ TIter itTrack(trackStore.CreateIterator());
+ AliMUONTrack* track;
- track = (AliMUONTrack*) fRecTracksPtr->First();
- while (track) {
- matchTrigger = kFALSE;
+ while ( ( track = static_cast<AliMUONTrack*>(itTrack()) ) )
+ {
+ matchTrigger = 0;
chi2MatchTrigger = 0.;
loTrgNum = -1;
-
- trackParam = *((AliMUONTrackParam*) (track->GetTrackParamAtHit()->Last()));
+ Int_t doubleMatch=-1; // Check if track matches 2 trigger tracks
+ Double_t doubleChi2 = -1.;
+
+ AliMUONTrackParam trackParam(*((AliMUONTrackParam*) (track->GetTrackParamAtCluster()->Last())));
AliMUONTrackExtrap::ExtrapToZ(&trackParam, AliMUONConstants::DefaultChamberZ(10)); // extrap to 1st trigger chamber
xTrack = trackParam.GetNonBendingCoor();
yTrack = trackParam.GetBendingCoor();
ySlopeTrack = trackParam.GetBendingSlope();
minChi2MatchTrigger = 999.;
-
- triggerTrack = (AliMUONTriggerTrack*) recTriggerTracks->First();
- while(triggerTrack){
+
+ AliMUONTriggerTrack *triggerTrack;
+ TIter itTriggerTrack(triggerTrackStore.CreateIterator());
+ while ( ( triggerTrack = static_cast<AliMUONTriggerTrack*>(itTriggerTrack() ) ) )
+ {
distTriggerTrack[0] = (triggerTrack->GetX11()-xTrack)/kDistSigma[0];
distTriggerTrack[1] = (triggerTrack->GetY11()-yTrack)/kDistSigma[1];
distTriggerTrack[2] = (TMath::Tan(triggerTrack->GetThetay())-ySlopeTrack)/kDistSigma[2];
chi2 = 0.;
for (Int_t iVar = 0; iVar < 3; iVar++) chi2 += distTriggerTrack[iVar]*distTriggerTrack[iVar];
chi2 /= 3.; // Normalized Chi2: 3 degrees of freedom (X,Y,slopeY)
- if (chi2 < minChi2MatchTrigger && chi2 < fMaxNormChi2MatchTrigger) {
- minChi2MatchTrigger = chi2;
- matchTrigger = kTRUE;
- chi2MatchTrigger = chi2;
- loTrgNum=triggerTrack->GetLoTrgNum();
+ if (chi2 < AliMUONReconstructor::GetRecoParam()->GetMaxNormChi2MatchTrigger())
+ {
+ Bool_t isDoubleTrack = (TMath::Abs(chi2 - minChi2MatchTrigger)<1.);
+ if (chi2 < minChi2MatchTrigger && chi2 < AliMUONReconstructor::GetRecoParam()->GetMaxNormChi2MatchTrigger())
+ {
+ if(isDoubleTrack)
+ {
+ doubleMatch = loTrgNum;
+ doubleChi2 = chi2MatchTrigger;
+ }
+ minChi2MatchTrigger = chi2;
+ chi2MatchTrigger = chi2;
+ loTrgNum = triggerTrack->GetLoTrgNum();
+ 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;
}
- triggerTrack = (AliMUONTriggerTrack*) recTriggerTracks->After(triggerTrack);
}
track->SetMatchTrigger(matchTrigger);
track->SetLoTrgNum(loTrgNum);
track->SetChi2MatchTrigger(chi2MatchTrigger);
- track = (AliMUONTrack*) fRecTracksPtr->After(track);
- }
-
- return;
-}
-
-//__________________________________________________________________________
-void AliMUONVTrackReconstructor::EventReconstructTrigger(void)
-{
- /// To reconstruct trigger for one event
- AliDebug(1,"Enter EventReconstructTrigger");
- MakeTriggerTracks();
- return;
+
+ AliMUONLocalTrigger* locTrg = static_cast<AliMUONLocalTrigger*>(triggerStore.FindLocal(loTrgNum));
+
+ if (locTrg)
+ {
+ track->SetLocalTrigger(locTrg->LoCircuit(),
+ locTrg->LoStripX(),
+ locTrg->LoStripY(),
+ locTrg->LoDev(),
+ locTrg->LoLpt(),
+ locTrg->LoHpt());
+ }
+ }
+
+ trackHitPattern.GetHitPattern(trackStore,triggerStore);
}
//__________________________________________________________________________
-Bool_t AliMUONVTrackReconstructor::MakeTriggerTracks(void)
+void AliMUONVTrackReconstructor::EventReconstructTrigger(const AliMUONTriggerCircuit& circuit,
+ const AliMUONVTriggerStore& triggerStore,
+ AliMUONVTriggerTrackStore& triggerTrackStore)
{
- // To make the trigger tracks from Local Trigger
- AliDebug(1, "Enter MakeTriggerTracks");
-
- TTree* treeR;
- UChar_t gloTrigPat;
- TClonesArray *localTrigger;
- TClonesArray *globalTrigger;
- AliMUONLocalTrigger *locTrg;
- AliMUONGlobalTrigger *gloTrg;
+ /// To make the trigger tracks from Local Trigger
+ AliDebug(1, "");
+ AliCodeTimerAuto("");
+
+ AliMUONGlobalTrigger* globalTrigger = triggerStore.Global();
+
+ UChar_t gloTrigPat = 0;
- treeR = fMUONData->TreeR();
- if (!treeR) {
- AliWarning("TreeR is not loaded");
- return kFALSE;
+ if (globalTrigger)
+ {
+ gloTrigPat = globalTrigger->GetGlobalResponse();
}
- fMUONData->SetTreeAddress("TC");
- fMUONData->GetTrigger();
-
- // global trigger for trigger pattern
- gloTrigPat = 0;
- globalTrigger = fMUONData->GlobalTrigger();
- gloTrg = (AliMUONGlobalTrigger*)globalTrigger->UncheckedAt(0);
-
- if (gloTrg)
- gloTrigPat = gloTrg->GetGlobalResponse();
-
-
- // local trigger for tracking
- localTrigger = fMUONData->LocalTrigger();
- Int_t nlocals = (Int_t) (localTrigger->GetEntries());
+ TIter next(triggerStore.CreateIterator());
+ AliMUONLocalTrigger* locTrg(0x0);
Float_t z11 = AliMUONConstants::DefaultChamberZ(10);
Float_t z21 = AliMUONConstants::DefaultChamberZ(12);
-
- Float_t y11 = 0.;
- Int_t stripX21 = 0;
- Float_t y21 = 0.;
- Float_t x11 = 0.;
-
- for (Int_t i=0; i<nlocals; i++) { // loop on Local Trigger
- locTrg = (AliMUONLocalTrigger*)localTrigger->UncheckedAt(i);
-
- AliDebug(1, "AliMUONTrackReconstructor::MakeTriggerTrack using NEW trigger \n");
- AliMUONTriggerCircuit* circuit =
- (AliMUONTriggerCircuit*)fTriggerCircuit->At(locTrg->LoCircuit()-1); // -1 !!!
-
- y11 = circuit->GetY11Pos(locTrg->LoStripX());
- stripX21 = locTrg->LoStripX()+locTrg->LoDev()+1;
- y21 = circuit->GetY21Pos(stripX21);
- x11 = circuit->GetX11Pos(locTrg->LoStripY());
-
- AliDebug(1, Form(" MakeTriggerTrack %d %d %d %d %d %f %f %f \n",i,locTrg->LoCircuit(),
- locTrg->LoStripX(),locTrg->LoStripX()+locTrg->LoDev()+1,locTrg->LoStripY(),y11, y21, x11));
+
+ AliMUONTriggerTrack triggerTrack;
+
+ while ( ( locTrg = static_cast<AliMUONLocalTrigger*>(next()) ) )
+ {
+ Bool_t xTrig=kFALSE;
+ Bool_t yTrig=kFALSE;
- Float_t thetax = TMath::ATan2( x11 , z11 );
- Float_t thetay = TMath::ATan2( (y21-y11) , (z21-z11) );
+ Int_t localBoardId = locTrg->LoCircuit();
+ if ( locTrg->LoSdev()==1 && locTrg->LoDev()==0 &&
+ locTrg->LoStripX()==0) xTrig=kFALSE; // no trigger in X
+ else xTrig=kTRUE; // trigger in X
+ if (locTrg->LoTrigY()==1 &&
+ locTrg->LoStripY()==15 ) yTrig = kFALSE; // no trigger in Y
+ else yTrig = kTRUE; // trigger in Y
- fTriggerTrack->SetX11(x11);
- fTriggerTrack->SetY11(y11);
- fTriggerTrack->SetThetax(thetax);
- fTriggerTrack->SetThetay(thetay);
- fTriggerTrack->SetGTPattern(gloTrigPat);
- fTriggerTrack->SetLoTrgNum(i);
-
- fMUONData->AddRecTriggerTrack(*fTriggerTrack);
+ if (xTrig && yTrig)
+ { // 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->LoDev();
+ Int_t sign = 0;
+ if ( !locTrg->LoSdev() && deviation ) sign=-1;
+ if ( !locTrg->LoSdev() && !deviation ) sign= 0;
+ if ( locTrg->LoSdev() == 1 ) sign=+1;
+ deviation *= sign;
+ deviation += 15;
+ 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) );
+
+ 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
-
- return kTRUE;
-}
-
-//__________________________________________________________________________
-void AliMUONVTrackReconstructor::EventDumpTrigger(void)
-{
- /// Dump reconstructed trigger event
- /// and the particle parameters
- AliMUONTriggerTrack *triggertrack ;
- Int_t nTriggerTracks = fMUONData->RecTriggerTracks()->GetEntriesFast();
-
- AliDebug(1, "****** enter EventDumpTrigger ******");
- AliDebug(1, Form("Number of Reconstructed tracks : %d ", nTriggerTracks));
-
- // Loop over reconstructed tracks
- for (Int_t trackIndex = 0; trackIndex < nTriggerTracks; trackIndex++) {
- triggertrack = (AliMUONTriggerTrack*)fMUONData->RecTriggerTracks()->At(trackIndex);
- printf(" trigger track number %i x11=%f y11=%f thetax=%f thetay=%f \n",
- trackIndex,
- triggertrack->GetX11(),triggertrack->GetY11(),
- triggertrack->GetThetax(),triggertrack->GetThetay());
- }
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff