/*
$Log$
+Revision 1.31 2002/10/23 07:24:56 alibrary
+Introducing Riostream.h
+
+Revision 1.30 2002/10/14 14:57:29 hristov
+Merging the VirtualMC branch to the main development branch (HEAD)
+
+Revision 1.28.8.1 2002/10/11 06:56:47 hristov
+Updating VirtualMC to v3-09-02
+
+Revision 1.29 2002/09/20 13:32:26 cussonno
+Minor bugs in the definition of the bending impact parameter corrected (thanks to A. Zinchenko)
+
+Revision 1.28 2001/08/31 06:50:11 gosset
+Different handling of TreeR for track reconstruction from raw clusters
+
+Revision 1.27 2001/07/27 13:03:12 hristov
+Default Branch split level set to 99
+
+Revision 1.26 2001/05/03 08:11:31 hristov
+stdlib.h included to define exit()
+
+Revision 1.25 2001/04/25 14:50:42 gosset
+Corrections to violations of coding conventions
+
Revision 1.24 2001/03/30 09:37:58 gosset
Initialisations of pointers... for GEANT background events in the constructor
//
////////////////////////////////////
-#include <iostream.h> // for cout
+#include <Riostream.h> // for cout
+#include <stdlib.h> // for exit()
#include <TTree.h>
#include "AliMUONTrackHit.h"
#include "AliMagF.h"
#include "AliRun.h" // for gAlice
+#include "AliMUONTrackK.h" //AZ
+#include <TMatrixD.h> //AZ
//************* Defaults parameters for reconstruction
static const Double_t kDefaultMinBendingMomentum = 3.0;
{
// Constructor for class AliMUONEventReconstructor
SetReconstructionParametersToDefaults();
+ fTrackMethod = 1; //AZ - tracking method (1-default, 2-Kalman)
// Memory allocation for the TClonesArray of hits for reconstruction
// Is 10000 the right size ????
fHitsForRecPtr = new TClonesArray("AliMUONHitForRec", 10000);
{
// To add to the list of hits for reconstruction
// the GEANT signal hits from a hit tree TH.
+ Int_t hitBits, chamBits; //AZ
if (fPrintLevel >= 2)
cout << "enter AddHitsForRecFromGEANT with TH: " << TH << endl;
if (TH == NULL) return;
Int_t ntracks = (Int_t) TH->GetEntries();
if (fPrintLevel >= 2)
cout << "ntracks: " << ntracks << endl;
+ fMuons = 0; //AZ
for (Int_t track = 0; track < ntracks; track++) {
gAlice->ResetHits();
TH->GetEvent(track);
// Loop over hits
Int_t hit = 0;
+ hitBits = 0; // AZ
+ chamBits = 0; // AZ
+ Int_t itrack = track; //AZ
for (AliMUONHit* mHit = (AliMUONHit*) pMUON->FirstHit(-1);
mHit;
mHit = (AliMUONHit*) pMUON->NextHit(), hit++) {
- NewHitForRecFromGEANT(mHit,track, hit, 1);
+ Int_t ipart = TMath::Abs ((Int_t) mHit->Particle()); //AZ
+ //itrack = mHit->Track(); //AZ
+ //AZNewHitForRecFromGEANT(mHit,track, hit, 1);
+ if (NewHitForRecFromGEANT(mHit,track, hit, 1) && ipart == 13
+ //if (NewHitForRecFromGEANT(mHit,itrack-1, hit, 1) && ipart == 13
+ && itrack <= 2) chamBits |= BIT(mHit->Chamber()-1); //AZ - set bit
} // end of hit loop
+ if (chamBits&3 && chamBits>>2&3 && chamBits>>4&3 && chamBits>>6&3 &&
+ chamBits>>8&3 && ((chamBits>>6&3)==3 || (chamBits>>8&3)==3))
+ fMuons += 1; //AZ
+ //if (chamBits&3 && chamBits>>2&3 && chamBits>>4&3 && chamBits>>6&3 &&
+ // chamBits>>8&3 && ((chamBits>>6&3)==3 || (chamBits>>8&3)==3) &&
+ // ((chamBits&3)==3 || (chamBits>>2&3)==3)) fMuons += 1;
} // end of track loop
return;
}
// on the radius between RMin and RMax.
AliMUONHitForRec *hitForRec;
AliMUONRawCluster *clus;
- Int_t iclus, nclus;
+ Int_t iclus, nclus, nTRentries;
TClonesArray *rawclusters;
if (fPrintLevel >= 1) cout << "enter AddHitsForRecFromRawClusters" << endl;
AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON"); // necessary ????
// Security on MUON ????
+ pMUON->ResetRawClusters();
+ nTRentries = Int_t(TR->GetEntries());
+ if (nTRentries != 1) {
+ cout << "Error in AliMUONEventReconstructor::AddHitsForRecFromRawClusters"
+ << endl;
+ cout << "nTRentries = " << nTRentries << " not equal to 1" << endl;
+ exit(0);
+ }
+ TR->GetEvent(0); // only one entry
// Loop over tracking chambers
for (Int_t ch = 0; ch < kMaxMuonTrackingChambers; ch++) {
// number of HitsForRec to 0 for the chamber
if (ch == 0) fIndexOfFirstHitForRecPerChamber[ch] = 0;
else fIndexOfFirstHitForRecPerChamber[ch] = fNHitsForRec;
rawclusters = pMUON->RawClustAddress(ch);
- pMUON->ResetRawClusters();
- TR->GetEvent((Int_t) (TR->GetEntries()) - 1); // to be checked ????
+// pMUON->ResetRawClusters();
+// TR->GetEvent((Int_t) (TR->GetEntries()) - 1); // to be checked ????
nclus = (Int_t) (rawclusters->GetEntries());
// Loop over (cathode correlated) raw clusters
for (iclus = 0; iclus < nclus; iclus++) {
hitForRec->Dump();}
} // end of cluster loop
} // end of chamber loop
+ SortHitsForRecWithIncreasingChamber(); //AZ
return;
}
if (fPrintLevel >= 1) cout << "enter MakeSegments" << endl;
ResetSegments();
// Loop over stations
- for (Int_t st = 0; st < kMaxMuonTrackingStations; st++)
+ Int_t nb = (fTrackMethod == 2) ? 3 : 0; //AZ
+ //AZ for (Int_t st = 0; st < kMaxMuonTrackingStations; st++)
+ for (Int_t st = nb; st < kMaxMuonTrackingStations; st++) //AZ
MakeSegmentsPerStation(st);
if (fPrintLevel >= 10) {
cout << "end of MakeSegments" << endl;
(hit1Ptr->GetZ() - hit2Ptr->GetZ());
// absolute value of impact parameter
impactParam =
- TMath::Abs(hit1Ptr->GetBendingCoor() - hit2Ptr->GetZ() * bendingSlope);
+ TMath::Abs(hit1Ptr->GetBendingCoor() - hit1Ptr->GetZ() * bendingSlope);
}
// check for distances not too large,
// and impact parameter not too big if stations downstream of the dipole.
// The order may be important for the following Reset's
ResetTracks();
ResetTrackHits();
- // Look for candidates from at least 3 aligned points in stations(1..) 4 and 5
- MakeTrackCandidates();
- // Follow tracks in stations(1..) 3, 2 and 1
- FollowTracks();
- // Remove double tracks
- RemoveDoubleTracks();
+ if (fTrackMethod == 2) { //AZ - Kalman filter
+ MakeTrackCandidatesK();
+ // Follow tracks in stations(1..) 3, 2 and 1
+ FollowTracksK();
+ // Remove double tracks
+ RemoveDoubleTracksK();
+ // Propagate tracks to the vertex thru absorber
+ GoToVertex();
+ } else { //AZ
+ // Look for candidates from at least 3 aligned points in stations(1..) 4 and 5
+ MakeTrackCandidates();
+ // Follow tracks in stations(1..) 3, 2 and 1
+ FollowTracks();
+ // Remove double tracks
+ RemoveDoubleTracks();
+ }
return;
}
fRecTracksPtr->Compress(); // for simple loop without "Next" since no hole
// Loop over reconstructed tracks
for (trackIndex = 0; trackIndex < fNRecTracks; trackIndex++) {
+ if (fTrackMethod != 1) continue; //AZ - skip the rest for now
if (fPrintLevel >= 1)
cout << " track number: " << trackIndex << endl;
// function for each track for modularity ????
TDirectory *current = gDirectory;
if (!fTreeFile) fTreeFile = new TFile("tree_reco.root", "RECREATE");
if (!fEventTree) fEventTree = new TTree("TreeRecoEvent", "MUON reconstructed events");
- if (fRecoEvent->MakeDumpTracks(fRecTracksPtr)) {
+ //AZif (fRecoEvent->MakeDumpTracks(fRecTracksPtr)) {
+ if (fRecoEvent->MakeDumpTracks(fMuons, fRecTracksPtr, this)) { //AZ
if (fPrintLevel > 1) fRecoEvent->EventInfo();
TBranch *branch = fEventTree->GetBranch("Event");
- if (!branch) branch = fEventTree->Branch("Event", "AliMUONRecoEvent", &fRecoEvent, 64000,1);
+ if (!branch) branch = fEventTree->Branch("Event", "AliMUONRecoEvent", &fRecoEvent, 64000);
branch->SetAutoDelete();
fTreeFile->cd();
fEventTree->Fill();
// restore directory
current->cd();
}
+
+//__________________________________________________________________________
+void AliMUONEventReconstructor::MakeTrackCandidatesK(void)
+{
+ // To make initial tracks for Kalman filter from the list of segments
+ Int_t istat, iseg;
+ AliMUONSegment *segment;
+ AliMUONTrackK *trackK;
+
+ if (fPrintLevel >= 1) cout << "enter MakeTrackCandidatesK" << endl;
+ // 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;
+
+ AliMUONTrackK a(this, fHitsForRecPtr); // bad idea ???
+ // Loop over stations(1...) 5 and 4
+ for (istat=4; istat>=3; istat--) {
+ // Loop over segments in the station
+ for (iseg=0; iseg<fNSegments[istat]; iseg++) {
+ // Transform segments to tracks and evaluate covariance matrix
+ segment = (AliMUONSegment*) ((*fSegmentsPtr[istat])[iseg]);
+ trackK = new ((*fRecTracksPtr)[fNRecTracks]) AliMUONTrackK(segment);
+ fNRecTracks++;
+ } // for (iseg=0;...)
+ } // for (istat=4;...)
+ return;
+}
+
+//__________________________________________________________________________
+void AliMUONEventReconstructor::FollowTracksK(void)
+{
+ // Follow tracks using Kalman filter
+ Bool_t Ok;
+ Int_t icand, ichamBeg, ichamEnd, chamBits;
+ Double_t zDipole1, zDipole2;
+ AliMUONTrackK *trackK;
+ AliMUONHitForRec *hit;
+ AliMUONRawCluster *clus;
+ TClonesArray *rawclusters;
+ AliMUON *pMUON;
+ clus = 0; rawclusters = 0;
+
+ zDipole1 = GetSimpleBPosition() - GetSimpleBLength()/2;
+ zDipole2 = zDipole1 + GetSimpleBLength();
+
+ // Print hits
+ pMUON = (AliMUON*) gAlice->GetModule("MUON");
+ for (Int_t i1=0; i1<fNHitsForRec; i1++) {
+ hit = (AliMUONHitForRec*) ((*fHitsForRecPtr)[i1]);
+ //if (hit->GetTHTrack() > 1 || hit->GetGeantSignal() == 0) continue;
+ /*
+ cout << " Hit #" << hit->GetChamberNumber() << " ";
+ cout << hit->GetBendingCoor() << " ";
+ cout << hit->GetNonBendingCoor() << " ";
+ cout << hit->GetZ() << " ";
+ cout << hit->GetGeantSignal() << " ";
+ cout << hit->GetTHTrack() << endl;
+ */
+ /*
+ printf(" Hit # %d %10.4f %10.4f %10.4f",
+ hit->GetChamberNumber(), hit->GetBendingCoor(),
+ hit->GetNonBendingCoor(), hit->GetZ());
+ if (fRecGeantHits) {
+ // from GEANT hits
+ printf(" %3d %3d \n", hit->GetGeantSignal(), hit->GetTHTrack());
+ } else {
+ // from raw clusters
+ rawclusters = pMUON->RawClustAddress(hit->GetChamberNumber());
+ clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(hit->
+ GetHitNumber());
+ printf("%3d", clus->fTracks[1]-1);
+ if (clus->fTracks[2] != 0) printf("%3d \n", clus->fTracks[2]-1);
+ else printf("\n");
+ }
+ */
+ }
+
+ icand = -1;
+ Int_t nSeeds = fNRecTracks; // starting number of seeds
+ // Loop over track candidates
+ while (icand < fNRecTracks-1) {
+ icand ++;
+ trackK = (AliMUONTrackK*) ((*fRecTracksPtr)[icand]);
+
+ // Discard candidate which will produce the double track
+ if (icand > 0) {
+ Ok = CheckCandidateK(icand,nSeeds);
+ if (!Ok) {
+ //trackK->SetRecover(-1); // mark candidate to be removed
+ //continue;
+ }
+ }
+
+ Ok = kTRUE;
+ if (trackK->GetRecover() == 0) hit = (AliMUONHitForRec*)
+ trackK->GetHitOnTrack()->Last(); // last hit
+ else hit = (AliMUONHitForRec*) (*trackK->GetHitOnTrack())[1]; // 2'nd hit
+ ichamBeg = hit->GetChamberNumber();
+ ichamEnd = 0;
+ // Check propagation direction
+ if (trackK->GetTrackDir() > 0) {
+ ichamEnd = 9; // forward propagation
+ Ok = trackK->KalmanFilter(ichamBeg,ichamEnd,kFALSE,zDipole1,zDipole2);
+ if (Ok) {
+ ichamBeg = ichamEnd;
+ ichamEnd = 6; // backward propagation
+ // Change weight matrix and zero fChi2 for backpropagation
+ trackK->StartBack();
+ Ok = trackK->KalmanFilter(ichamBeg,ichamEnd,kTRUE,zDipole1,zDipole2);
+ ichamBeg = ichamEnd;
+ ichamEnd = 0;
+ }
+ } else {
+ if (trackK->GetBPFlag()) {
+ // backpropagation
+ ichamEnd = 6; // backward propagation
+ // Change weight matrix and zero fChi2 for backpropagation
+ trackK->StartBack();
+ Ok = trackK->KalmanFilter(ichamBeg,ichamEnd,kTRUE,zDipole1,zDipole2);
+ ichamBeg = ichamEnd;
+ ichamEnd = 0;
+ }
+ }
+
+ if (Ok) {
+ trackK->SetTrackDir(-1);
+ trackK->SetBPFlag(kFALSE);
+ Ok = trackK->KalmanFilter(ichamBeg,ichamEnd,kFALSE,zDipole1,zDipole2);
+ }
+ if (Ok) trackK->SetTrackQuality(0); // compute "track quality"
+ else trackK->SetRecover(-1); // mark candidate to be removed
+
+ // Majority 3 of 4 in first 2 stations
+ chamBits = 0;
+ for (Int_t i=0; i<trackK->GetNTrackHits(); i++) {
+ hit = (AliMUONHitForRec*) (*trackK->GetHitOnTrack())[i];
+ chamBits |= BIT(hit->GetChamberNumber()-1);
+ }
+ //if (!((chamBits&3)==3 || (chamBits>>2&3)==3)) trackK->SetRecover(-1);
+ //mark candidate to be removed
+ } // while
+
+ for (Int_t i=0; i<fNRecTracks; i++) {
+ trackK = (AliMUONTrackK*) ((*fRecTracksPtr)[i]);
+ if (trackK->GetRecover() < 0) fRecTracksPtr->RemoveAt(i);
+ }
+
+ // Compress TClonesArray
+ fRecTracksPtr->Compress();
+ fNRecTracks = fRecTracksPtr->GetEntriesFast();
+ return;
+}
+
+//__________________________________________________________________________
+Bool_t AliMUONEventReconstructor::CheckCandidateK(Int_t icand, Int_t nSeeds)
+{
+ // Discards track candidate if it will produce the double track (having
+ // the same seed segment hits as hits of a good track found before)
+ AliMUONTrackK *track1, *track2;
+ AliMUONHitForRec *hit1, *hit2, *hit;
+
+ track1 = (AliMUONTrackK*) ((*fRecTracksPtr)[icand]);
+ hit1 = (AliMUONHitForRec*) (*track1->GetHitOnTrack())[0]; // 1'st hit
+ hit2 = (AliMUONHitForRec*) (*track1->GetHitOnTrack())[1]; // 2'nd hit
+
+ for (Int_t i=0; i<icand; i++) {
+ track2 = (AliMUONTrackK*) ((*fRecTracksPtr)[i]);
+ //if (track2->GetRecover() < 0) continue;
+ if (track2->GetRecover() < 0 && icand >= nSeeds) continue;
+
+ if (track1->GetStartSegment() == track2->GetStartSegment()) {
+ return kFALSE;
+ } else {
+ Int_t nSame = 0;
+ for (Int_t j=0; j<track2->GetNTrackHits(); j++) {
+ hit = (AliMUONHitForRec*) (*track2->GetHitOnTrack())[j];
+ if (hit == hit1 || hit == hit2) {
+ nSame++;
+ if (nSame == 2) return kFALSE;
+ }
+ } // for (Int_t j=0;
+ }
+ } // for (Int_t i=0;
+ return kTRUE;
+}
+
+//__________________________________________________________________________
+void AliMUONEventReconstructor::RemoveDoubleTracksK(void)
+{
+ // Removes double tracks (sharing more than half of their hits). Keeps
+ // the track with higher quality
+ AliMUONTrackK *track1, *track2, *trackToKill;
+
+ // Sort tracks according to their quality
+ fRecTracksPtr->Sort();
+
+ // Loop over first track of the pair
+ track1 = (AliMUONTrackK*) fRecTracksPtr->First();
+ while (track1) {
+ // Loop over second track of the pair
+ track2 = (AliMUONTrackK*) fRecTracksPtr->After(track1);
+ while (track2) {
+ // Check whether or not to keep track2
+ if (!track2->KeepTrack(track1)) {
+ cout << " Killed track: " << 1/(*track2->GetTrackParameters())(4,0) <<
+ " " << track2->GetTrackQuality() << endl;
+ trackToKill = track2;
+ track2 = (AliMUONTrackK*) fRecTracksPtr->After(track2);
+ trackToKill->Kill();
+ fRecTracksPtr->Compress();
+ } else track2 = (AliMUONTrackK*) fRecTracksPtr->After(track2);
+ } // track2
+ track1 = (AliMUONTrackK*) fRecTracksPtr->After(track1);
+ } // track1
+
+ fNRecTracks = fRecTracksPtr->GetEntriesFast();
+ cout << " Number of Kalman tracks: " << fNRecTracks << endl;
+}
+
+//__________________________________________________________________________
+void AliMUONEventReconstructor::GoToVertex(void)
+{
+ // Propagates track to the vertex thru absorber
+ // (using Branson correction for now)
+
+ Double_t zVertex;
+ zVertex = 0;
+ for (Int_t i=0; i<fNRecTracks; i++) {
+ //((AliMUONTrackK*)(*fRecTracksPtr)[i])->Branson();
+ //((AliMUONTrackK*)(*fRecTracksPtr)[i])->GoToZ(zVertex); // w/out absorber
+ ((AliMUONTrackK*)(*fRecTracksPtr)[i])->SetTrackQuality(1); // compute Chi2
+ ((AliMUONTrackK*)(*fRecTracksPtr)[i])->GoToVertex(); // with absorber
+ }
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff