* about the suitability of this software for any purpose. It is *
* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.6 2001/01/26 20:00:53 hristov
-Major upgrade of AliRoot code
+/* $Id$ */
-Revision 1.4 2000/12/21 22:14:38 morsch
-Clean-up of coding rule violations.
+//-----------------------------------------------------------------------------
+/// \class AliMUONTrackReconstructor
+/// MUON track reconstructor using the original method
+///
+/// This class contains as data:
+/// - the parameters for the track reconstruction
+///
+/// It contains as methods, among others:
+/// - MakeTracks to build the tracks
+//-----------------------------------------------------------------------------
-Revision 1.3 2000/10/02 21:28:09 fca
-Removal of useless dependecies via forward declarations
+#include "AliMUONTrackReconstructor.h"
-Revision 1.2 2000/06/15 07:58:49 morsch
-Code from MUON-dev joined
+#include "AliMUONConstants.h"
+#include "AliMUONVCluster.h"
+#include "AliMUONVClusterServer.h"
+#include "AliMUONVClusterStore.h"
+#include "AliMUONTrack.h"
+#include "AliMUONTrackParam.h"
+#include "AliMUONTrackExtrap.h"
+#include "AliMUONRecoParam.h"
+#include "AliMUONGeometryTransformer.h"
-Revision 1.1.2.7 2000/06/09 22:06:29 morsch
-Some coding rule violations corrected. Will soon be obsolete.
+#include "AliMpArea.h"
-Revision 1.1.2.6 2000/05/02 07:15:29 morsch
-Put back TH1.h and TH2.h includes.
+#include "AliLog.h"
-Revision 1.1.2.5 2000/02/17 18:12:43 morsch
-Corrections in trackf_read_spoint causing segmentation violations in previous version (I. Chevrot)
-New histos (I. Chevrot)
-
-Revision 1.1.2.4 2000/02/15 18:01:08 morsch
-Log messages
-
-Revision 1.1.2.3 2000/02/15 17:59:01 morsch
-Log message added
-
-Revision 1.1.2.2 2000/02/15 18:54:56 morsch
-Reference between track contributing to reconstructed hit and particle corrected
-*/
-
-#include "AliCallf77.h"
-#include "AliMUONTrackReconstructor.h"
-#include "AliRun.h"
-#include "AliMUON.h"
-#include "AliMC.h"
-
-#include "AliMUONHit.h"
-#include "AliMUONPadHit.h"
-#include "AliMUONDigit.h"
-#include "AliMUONRawCluster.h"
-#include "AliMUONReconstHit.h"
-
-#include "AliPDG.h"
-
-#include <TRandom.h>
-#include <TFile.h>
-#include <TH1.h>
-#include <TH2.h>
-#include <TTree.h>
-#include <TParticle.h>
#include <TMinuit.h>
-#include <iostream.h>
-
-#ifndef WIN32
-# define reco_init reco_init_
-# define cutpxz cutpxz_
-# define sigmacut sigmacut_
-# define xpreci xpreci_
-# define ypreci ypreci_
-# define reconstmuon reconstmuon_
-# define reconstmuon2 reconstmuon2_
-# define trackf_read_geant trackf_read_geant_
-# define trackf_read_fit trackf_read_fit_
-# define trackf_read_spoint trackf_read_spoint_
-# define chfill chfill_
-# define chfill2 chfill2_
-# define chf1 chf1_
-# define chfnt chfnt_
-# define hist_create hist_create_
-# define hist_closed hist_closed_
-# define rndm rndm_
-# define fcn fcn_
-# define trackf_fit trackf_fit_
-# define prec_fit prec_fit_
-# define fcnfit fcnfit_
-# define reco_term reco_term_
-#else
-# define reco_init RECO_INIT
-# define cutpxz CUTPXZ
-# define sigmacut SIGMACUT
-# define xpreci XPRECI
-# define ypreci YPRECI
-# define reconstmuon RECONSTMUON
-# define reconstmuon2 RECONSTMUON2
-# define trackf_read_geant TRACKF_READ_GEANT
-# define trackf_read_fit TRACKF_READ_FIT
-# define trackf_read_spoint TRACKF_READ_SPOINT
-# define chfill CHFILL
-# define chfill2 CHFILL2
-# define chf1 CHF1
-# define chfnt CHFNT
-# define hist_create HIST_CREATE
-# define hist_closed HIST_CLOSED
-# define rndm RNDM
-# define fcn FCN
-# define trackf_fit TRACKF_FIT
-# define prec_fit PREC_FIT
-# define fcnfit FCNFIT
-# define reco_term RECO_TERM
-#endif
-
-extern "C"
+#include <Riostream.h>
+#include <TMath.h>
+#include <TMatrixD.h>
+#include <TClonesArray.h>
+
+// Functions to be minimized with Minuit
+void TrackChi2(Int_t &nParam, Double_t *gradient, Double_t &chi2, Double_t *param, Int_t flag);
+
+using std::endl;
+using std::cout;
+/// \cond CLASSIMP
+ClassImp(AliMUONTrackReconstructor) // Class implementation in ROOT context
+/// \endcond
+
+ //__________________________________________________________________________
+AliMUONTrackReconstructor::AliMUONTrackReconstructor(const AliMUONRecoParam* recoParam, AliMUONVClusterServer* clusterServer,
+ const AliMUONGeometryTransformer* transformer)
+ : AliMUONVTrackReconstructor(recoParam, clusterServer, transformer)
{
-void type_of_call reco_init(Double_t &, Double_t &, Double_t &);
-void type_of_call reco_term();
-void type_of_call cutpxz(Double_t &);
-void type_of_call sigmacut(Double_t &);
-void type_of_call xpreci(Double_t &);
-void type_of_call ypreci(Double_t &);
-void type_of_call reconstmuon(Int_t &, Int_t &, Int_t &, Int_t &, Int_t &);
-void type_of_call reconstmuon2(Int_t &, Int_t &, Int_t &);
-void type_of_call trackf_read_fit(Int_t &, Int_t &, Int_t &, Int_t *, Double_t *, Double_t *);
-void type_of_call trackf_read_geant(Int_t *, Double_t *, Double_t *, Double_t *, Int_t *, Int_t *, Double_t *, Double_t *, Double_t *, Double_t *,Int_t &, Double_t *, Double_t *, Double_t *, Int_t &, Int_t &, Double_t *, Double_t *, Double_t *, Double_t *);
-void type_of_call trackf_read_spoint(Int_t *, Double_t *, Double_t *, Double_t *, Int_t *, Int_t *, Double_t *, Double_t *, Double_t *, Double_t *,Int_t &, Double_t *, Double_t *, Double_t *, Int_t &, Int_t &, Double_t *, Double_t *, Double_t *, Double_t *);
-void type_of_call chfill(Int_t &, Float_t &, Float_t &, Float_t &);
-void type_of_call chfill2(Int_t &, Float_t &, Float_t &, Float_t &);
-void type_of_call chf1(Int_t &, Float_t &, Float_t &);
-void type_of_call chfnt(Int_t &, Int_t &, Int_t *, Int_t *, Float_t *, Float_t *, Float_t *, Float_t *, Float_t *, Float_t *, Float_t *, Float_t *);
-void type_of_call hist_create();
-void type_of_call hist_closed();
-void type_of_call fcnf(Int_t &, Double_t *, Double_t &, Double_t *, Int_t);
-void type_of_call fcn(Int_t &, Double_t *, Double_t &, Double_t *, Int_t &, Int_t &);
-void type_of_call trackf_fit(Int_t &, Double_t *, Double_t *, Double_t &, Double_t &, Double_t &, Double_t &, Double_t &);
-void type_of_call prec_fit(Double_t &, Double_t &, Double_t &, Double_t &, Double_t&, Double_t &, Double_t &, Double_t &, Double_t &, Double_t &, Double_t &, Double_t &, Double_t &, Double_t &, Double_t &);
-void type_of_call fcnfitf(Int_t &, Double_t *, Double_t &, Double_t *, Int_t);
-void type_of_call fcnfit(Int_t &, Double_t *, Double_t &, Double_t *, Int_t &, Int_t &);
-Float_t type_of_call rndm() {return gRandom->Rndm();}
-void type_of_call fit_trace(Float_t &, Float_t &, Float_t &, Float_t &, Float_t &, Float_t &, Int_t &, Int_t &, Int_t &, Int_t &);
+ /// Constructor
}
-static TTree *gAliNtupleGlobal;
-static TFile *gAliFileGlobal;
-static TTree *gAliTreeK1;
-static TTree *gAliTrH1;
-static TClonesArray *gAliHits2; //List of hits for one track only
-static TClonesArray *gAliParticles2; //List of particles in the Kine tree
-
+ //__________________________________________________________________________
+AliMUONTrackReconstructor::~AliMUONTrackReconstructor()
+{
+/// Destructor
+}
-// variables of the tracking ntuple
-struct {
- Int_t ievr; // number of event
- Int_t ntrackr; // number of tracks per event
- Int_t istatr[500]; // 1 = good muon, 2 = ghost, 0 = something else
- Int_t isignr[500]; // sign of the track
- Float_t pxr[500]; // x momentum of the reconstructed track
- Float_t pyr[500]; // y momentum of the reconstructed track
- Float_t pzr[500]; // z momentum of the reconstructed track
- Float_t zvr[500]; // z vertex
- Float_t chi2r[500]; // chi2 of the fit of the track with the field map
- Float_t pxv[500]; // x momentum at vertex
- Float_t pyv[500]; // y momentum at vertex
- Float_t pzv[500]; // z momentum at vertex
-} NtupleSt;
+ //__________________________________________________________________________
+Bool_t AliMUONTrackReconstructor::MakeTrackCandidates(AliMUONVClusterStore& clusterStore)
+{
+ /// To make track candidates (assuming linear propagation if the flag fgkMakeTrackCandidatesFast is set to kTRUE):
+ /// Start with segments station(1..) 4 or 5 then follow track in station 5 or 4.
+ /// Good candidates are made of at least three clusters.
+ /// Keep only best candidates or all of them according to the flag fgkTrackAllTracks.
+
+ TClonesArray *segments;
+ AliMUONTrack *track;
+ Int_t iCandidate = 0;
+ Bool_t clusterFound;
-ClassImp(AliMUONTrackReconstructor)
+ AliDebug(1,"Enter MakeTrackCandidates");
-//___________________________________________________
-AliMUONTrackReconstructor::AliMUONTrackReconstructor()
-{
-// Constructor
-//
- fSPxzCut = 3.0;
- fSSigmaCut = 4.0;
- fSXPrec = 0.01;
- fSYPrec = 0.144;
+ // Unless we're doing combined tracking, we'll clusterize all stations at once
+ Int_t firstChamber(0);
+ Int_t lastChamber(9);
+
+ if (GetRecoParam()->CombineClusterTrackReco()) {
+ // ... Here's the exception : ask the clustering to reconstruct
+ // clusters *only* in station 4 and 5 for combined tracking
+ firstChamber = 6;
+ }
+
+ for (Int_t i = firstChamber; i <= lastChamber; ++i )
+ {
+ if (fClusterServer && GetRecoParam()->UseChamber(i)) fClusterServer->Clusterize(i, clusterStore, AliMpArea(), GetRecoParam());
+ }
+
+ // Loop over stations(1..) 5 and 4 and make track candidates
+ for (Int_t istat=4; istat>=3; istat--) {
+
+ // Make segments in the station
+ segments = MakeSegmentsBetweenChambers(clusterStore, 2*istat, 2*istat+1);
+
+ // Loop over segments
+ for (Int_t iseg=0; iseg<segments->GetEntriesFast(); iseg++)
+ {
+ AliDebug(1,Form("Making primary candidate(1..) %d",++iCandidate));
+
+ // Transform segments to tracks and put them at the end of fRecTracksPtr
+ track = new ((*fRecTracksPtr)[fRecTracksPtr->GetLast()+1]) AliMUONTrack((AliMUONObjectPair*)((*segments)[iseg]),GetRecoParam()->GetBendingVertexDispersion());
+ fNRecTracks++;
+
+ // Look for compatible cluster(s) in the other station
+ if (GetRecoParam()->MakeTrackCandidatesFast())
+ clusterFound = FollowLinearTrackInStation(*track, clusterStore, 7-istat);
+ else clusterFound = FollowTrackInStation(*track, clusterStore, 7-istat);
+
+ // Remove track if no cluster found on a requested station
+ // or abort tracking if there are too many candidates
+ if (GetRecoParam()->RequestStation(7-istat)) {
+ if (!clusterFound) {
+ fRecTracksPtr->Remove(track);
+ fNRecTracks--;
+ } else if (fNRecTracks > GetRecoParam()->GetMaxTrackCandidates()) {
+ AliError(Form("Too many track candidates (%d tracks). Stop tracking.", fNRecTracks));
+ return kFALSE;
+ }
+ } else {
+ if ((fNRecTracks + segments->GetEntriesFast() - iseg - 1) > GetRecoParam()->GetMaxTrackCandidates()) {
+ AliError(Form("Too many track candidates (%d tracks). Stop tracking.", fNRecTracks + segments->GetEntriesFast() - iseg - 1));
+ return kFALSE;
+ }
+ }
+
+ }
+
+ }
+
+ // Keep all different tracks or only the best ones as required
+ if (GetRecoParam()->TrackAllTracks()) RemoveIdenticalTracks();
+ else RemoveDoubleTracks();
+
+ AliDebug(1,Form("Number of good candidates = %d",fNRecTracks));
+
+ return kTRUE;
+
}
-//_____________________________________________________________________________
-void AliMUONTrackReconstructor::Reconst2(Int_t &ifit, Int_t &idebug, Int_t &nev)
+ //__________________________________________________________________________
+Bool_t AliMUONTrackReconstructor::MakeMoreTrackCandidates(AliMUONVClusterStore& clusterStore)
{
-//
-//
- reconstmuon2(ifit,idebug,nev);
+ /// To make extra track candidates (assuming linear propagation if the flag fgkMakeTrackCandidatesFast is set to kTRUE):
+ /// clustering is supposed to be already done
+ /// Start with segments made of 1 cluster in each of the stations 4 and 5 then follow track in remaining chambers.
+ /// Good candidates are made of at least three clusters if both station are requested (two otherwise).
+ /// Keep only best candidates or all of them according to the flag fgkTrackAllTracks.
+
+ TClonesArray *segments;
+ AliMUONObjectPair *segment;
+ AliMUONTrack *track;
+ Int_t iCandidate = 0, iCurrentTrack, nCurrentTracks;
+ Bool_t clusterFound;
+
+ AliDebug(1,"Enter MakeMoreTrackCandidates");
+
+ // Double loop over chambers in stations(1..) 4 and 5 to make track candidates
+ for (Int_t ich1 = 6; ich1 <= 7; ich1++) {
+ for (Int_t ich2 = 8; ich2 <= 9; ich2++) {
+
+ // Make segments in the station
+ segments = MakeSegmentsBetweenChambers(clusterStore, ich1, ich2);
+
+ /// Remove segments already attached to a track
+ RemoveUsedSegments(*segments);
+
+ // Loop over segments
+ for (Int_t iSegment=0; iSegment<segments->GetEntriesFast(); iSegment++)
+ {
+ AliDebug(1,Form("Making primary candidate(1..) %d",++iCandidate));
+ segment = (AliMUONObjectPair*) segments->UncheckedAt(iSegment);
+
+ // Transform segments to tracks and put them at the end of fRecTracksPtr
+ iCurrentTrack = fRecTracksPtr->GetLast()+1;
+ track = new ((*fRecTracksPtr)[iCurrentTrack]) AliMUONTrack(segment,GetRecoParam()->GetBendingVertexDispersion());
+ fNRecTracks++;
+
+ // Look for compatible cluster(s) in the second chamber of station 5
+ clusterFound = FollowLinearTrackInChamber(*track, clusterStore, 17-ich2);
+
+ // skip the original track in case it has been removed
+ if (GetRecoParam()->TrackAllTracks() && clusterFound) iCurrentTrack++;
+
+ // loop over every new tracks
+ nCurrentTracks = fRecTracksPtr->GetLast()+1;
+ while (iCurrentTrack < nCurrentTracks) {
+ track = (AliMUONTrack*) fRecTracksPtr->UncheckedAt(iCurrentTrack);
+
+ // Look for compatible cluster(s) in the second chamber of station 4
+ FollowLinearTrackInChamber(*track, clusterStore, 13-ich1);
+
+ iCurrentTrack++;
+ }
+
+ // abort tracking if there are too many candidates
+ if ((fNRecTracks + segments->GetEntriesFast() - iSegment - 1) > GetRecoParam()->GetMaxTrackCandidates()) {
+ AliError(Form("Too many track candidates (%d tracks). Stop tracking.", fNRecTracks + segments->GetEntriesFast() - iSegment - 1));
+ return kFALSE;
+ }
+
+ }
+
+ }
+ }
+
+ // Keep only the best tracks if required
+ if (!GetRecoParam()->TrackAllTracks()) RemoveDoubleTracks();
+ else fRecTracksPtr->Compress();
+
+ AliDebug(1,Form("Number of good candidates = %d",fNRecTracks));
+
+ return kTRUE;
+
}
-//_____________________________________________________________________________
-void AliMUONTrackReconstructor::Reconst(Int_t &ifit, Int_t &idebug, Int_t bgdEvent, Int_t &nev, Int_t &idres, Int_t &ireadgeant, Option_t *option,Text_t *filename)
+ //__________________________________________________________________________
+Bool_t AliMUONTrackReconstructor::FollowTracks(AliMUONVClusterStore& clusterStore)
{
- //
- // open kine and hits tree of background file for reconstruction of geant hits
- // call tracking fortran program
- static Bool_t first=kTRUE;
- static TFile *pFile;
- char *addBackground = strstr(option,"Add");
-
- if (addBackground ) { // only in case of background with geant hits
- if(first) {
- fFileName=filename;
- cout<<"filename "<<fFileName<<endl;
- pFile=new TFile(fFileName);
- cout<<"I have opened "<<fFileName<<" file "<<endl;
- gAliHits2 = new TClonesArray("AliMUONHit",1000);
- gAliParticles2 = new TClonesArray("TParticle",1000);
- first=kFALSE;
- }
- pFile->cd();
- if(gAliHits2) gAliHits2->Clear();
- if(gAliParticles2) gAliParticles2->Clear();
- if(gAliTrH1) delete gAliTrH1;
- gAliTrH1=0;
- if(gAliTreeK1) delete gAliTreeK1;
- gAliTreeK1=0;
- // Get Hits Tree header from file
- char treeName[20];
- sprintf(treeName,"TreeH%d",bgdEvent);
- gAliTrH1 = (TTree*)gDirectory->Get(treeName);
- // printf("gAliTrH1 %p of treename %s for event %d \n",gAliTrH1,treeName,bgdEvent);
- if (!gAliTrH1) {
- printf("ERROR: cannot find Hits Tree for event:%d\n",bgdEvent);
+ /// Follow tracks in stations(1..) 3, 2 and 1
+ AliDebug(1,"Enter FollowTracks");
+
+ AliMUONTrack *track, *nextTrack;
+ AliMUONTrackParam *trackParam, *nextTrackParam;
+ Int_t currentNRecTracks;
+
+ Double_t sigmaCut2 = GetRecoParam()->GetSigmaCutForTracking() *
+ GetRecoParam()->GetSigmaCutForTracking();
+
+ for (Int_t station = 2; station >= 0; station--) {
+
+ // Save the actual number of reconstructed track in case of
+ // tracks are added or suppressed during the tracking procedure
+ // !! Do not compress fRecTracksPtr until the end of the loop over tracks !!
+ currentNRecTracks = fNRecTracks;
+
+ for (Int_t iRecTrack = 0; iRecTrack <currentNRecTracks; iRecTrack++) {
+ AliDebug(1,Form("FollowTracks: track candidate(1..) %d", iRecTrack+1));
+
+ track = (AliMUONTrack*) fRecTracksPtr->UncheckedAt(iRecTrack);
+
+ // Fit the track:
+ // Do not take into account the multiple scattering to speed up the fit
+ // Calculate the track parameter covariance matrix
+ // If there is no cluster out of station 4 or 5 then use the vertex to better constrain the fit
+ if (((AliMUONTrackParam*) track->GetTrackParamAtCluster()->First())->GetClusterPtr()->GetChamberId() > 5)
+ Fit(*track, kFALSE, kTRUE, kTRUE);
+ else Fit(*track, kFALSE, kFALSE, kTRUE);
+
+ // remove tracks out of limits
+ if (!IsAcceptable(*((AliMUONTrackParam*)track->GetTrackParamAtCluster()->First()))) {
+ fRecTracksPtr->Remove(track);
+ fNRecTracks--;
+ continue;
+ }
+
+ // remove track if the normalized chi2 is too high
+ if (track->GetNormalizedChi2() > sigmaCut2) {
+ fRecTracksPtr->Remove(track);
+ fNRecTracks--;
+ continue;
+ }
+
+ // save parameters from fit into smoothed parameters to complete track afterward
+ if (GetRecoParam()->ComplementTracks()) {
+
+ if (station==2) { // save track parameters on stations 4 and 5
+
+ // extrapolate track parameters and covariances at each cluster
+ // remove the track in case of failure
+ if (!track->UpdateCovTrackParamAtCluster()) {
+ fRecTracksPtr->Remove(track);
+ fNRecTracks--;
+ continue;
+ }
+
+ // save them
+ trackParam = (AliMUONTrackParam*) track->GetTrackParamAtCluster()->First();
+ while (trackParam) {
+ trackParam->SetSmoothParameters(trackParam->GetParameters());
+ trackParam->SetSmoothCovariances(trackParam->GetCovariances());
+ trackParam = (AliMUONTrackParam*) track->GetTrackParamAtCluster()->After(trackParam);
+ }
+
+ } else { // or save track parameters on last station only
+
+ trackParam = (AliMUONTrackParam*) track->GetTrackParamAtCluster()->First();
+ if (trackParam->GetClusterPtr()->GetChamberId() < 2*(station+2)) {
+
+ // save parameters from fit
+ trackParam->SetSmoothParameters(trackParam->GetParameters());
+ trackParam->SetSmoothCovariances(trackParam->GetCovariances());
+
+ // save parameters extrapolated to the second chamber of the same station if it has been hit
+ nextTrackParam = (AliMUONTrackParam*) track->GetTrackParamAtCluster()->After(trackParam);
+ if (nextTrackParam->GetClusterPtr()->GetChamberId() < 2*(station+2)) {
+
+ // reset parameters and covariances
+ nextTrackParam->SetParameters(trackParam->GetParameters());
+ nextTrackParam->SetZ(trackParam->GetZ());
+ nextTrackParam->SetCovariances(trackParam->GetCovariances());
+
+ // extrapolate them to the z of the corresponding cluster
+ // remove the track in case of failure
+ if (!AliMUONTrackExtrap::ExtrapToZCov(nextTrackParam, nextTrackParam->GetClusterPtr()->GetZ())) {
+ fRecTracksPtr->Remove(track);
+ fNRecTracks--;
+ continue;
+ }
+
+ // save them
+ nextTrackParam->SetSmoothParameters(nextTrackParam->GetParameters());
+ nextTrackParam->SetSmoothCovariances(nextTrackParam->GetCovariances());
+
+ }
+
+ }
+
+ }
+
+ }
+
+ // Look for compatible cluster(s) in station(0..) "station"
+ if (!FollowTrackInStation(*track, clusterStore, station)) {
+
+ // Try to recover track if required
+ if (GetRecoParam()->RecoverTracks()) {
+
+ // work on a copy of the track if this station is not required
+ // to keep the case where no cluster is reconstructed as a possible candidate
+ if (!GetRecoParam()->RequestStation(station)) {
+ track = new ((*fRecTracksPtr)[fRecTracksPtr->GetLast()+1]) AliMUONTrack(*track);
+ fNRecTracks++;
+ }
+
+ // try to recover
+ if (!RecoverTrack(*track, clusterStore, station)) {
+ // remove track if no cluster found
+ fRecTracksPtr->Remove(track);
+ fNRecTracks--;
+ }
+
+ } else if (GetRecoParam()->RequestStation(station)) {
+ // remove track if no cluster found
+ fRecTracksPtr->Remove(track);
+ fNRecTracks--;
+ }
+
+ }
+
+ // abort tracking if there are too many candidates
+ if (fNRecTracks > GetRecoParam()->GetMaxTrackCandidates()) {
+ AliError(Form("Too many track candidates (%d tracks). Stop tracking.", fNRecTracks));
+ return kFALSE;
+ }
+
}
- // set branch addresses
- TBranch *branch;
- char branchname[30];
- AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON");
- sprintf(branchname,"%s",pMUON->GetName());
- if (gAliTrH1 && gAliHits2) {
- branch = gAliTrH1->GetBranch(branchname);
- if (branch) branch->SetAddress(&gAliHits2);
+
+ // Compress fRecTracksPtr for the next step
+ fRecTracksPtr->Compress();
+
+ // Keep only the best tracks if required
+ if (!GetRecoParam()->TrackAllTracks()) RemoveDoubleTracks();
+
+ }
+
+ // Last fit of track candidates with all stations
+ // Take into account the multiple scattering and remove bad tracks
+ Int_t trackIndex = -1;
+ track = (AliMUONTrack*) fRecTracksPtr->First();
+ while (track) {
+
+ trackIndex++;
+ nextTrack = (AliMUONTrack*) fRecTracksPtr->After(track); // prepare next track
+
+ Fit(*track, kTRUE, kFALSE, kTRUE);
+
+ // Printout for debuging
+ if (AliLog::GetGlobalDebugLevel() >= 3) {
+ cout << "FollowTracks: track candidate(0..) " << trackIndex << " after final fit" << endl;
+ track->RecursiveDump();
+ }
+
+ // Remove the track if the normalized chi2 is too high
+ if (track->GetNormalizedChi2() > sigmaCut2) {
+ fRecTracksPtr->Remove(track);
+ fNRecTracks--;
+ track = nextTrack;
+ continue;
}
- gAliTrH1->GetEntries();
- // get the Kine tree
- sprintf(treeName,"TreeK%d",bgdEvent);
- gAliTreeK1 = (TTree*)gDirectory->Get(treeName);
- if (!gAliTreeK1) {
- printf("ERROR: cannot find Kine Tree for event:%d\n",bgdEvent);
+
+ // save parameters from fit into smoothed parameters to complete track afterward
+ if (GetRecoParam()->ComplementTracks()) {
+
+ trackParam = (AliMUONTrackParam*) track->GetTrackParamAtCluster()->First();
+ if (trackParam->GetClusterPtr()->GetChamberId() < 2) {
+
+ // save parameters from fit
+ trackParam->SetSmoothParameters(trackParam->GetParameters());
+ trackParam->SetSmoothCovariances(trackParam->GetCovariances());
+
+ // save parameters extrapolated to the second chamber of the same station if it has been hit
+ nextTrackParam = (AliMUONTrackParam*) track->GetTrackParamAtCluster()->After(trackParam);
+ if (nextTrackParam->GetClusterPtr()->GetChamberId() < 2) {
+
+ // reset parameters and covariances
+ nextTrackParam->SetParameters(trackParam->GetParameters());
+ nextTrackParam->SetZ(trackParam->GetZ());
+ nextTrackParam->SetCovariances(trackParam->GetCovariances());
+
+ // extrapolate them to the z of the corresponding cluster
+ // remove the track in case of failure
+ if (!AliMUONTrackExtrap::ExtrapToZCov(nextTrackParam, nextTrackParam->GetClusterPtr()->GetZ())) {
+ fRecTracksPtr->Remove(track);
+ fNRecTracks--;
+ track = nextTrack;
+ continue;
+ }
+
+ // save them
+ nextTrackParam->SetSmoothParameters(nextTrackParam->GetParameters());
+ nextTrackParam->SetSmoothCovariances(nextTrackParam->GetCovariances());
+
+ }
+
+ }
+
}
- // set branch addresses
- if (gAliTreeK1)
- gAliTreeK1->SetBranchAddress("Particles", &gAliParticles2);
- gAliTreeK1->GetEvent(0);
- // get back to the first file
- TTree *treeK = gAlice->TreeK();
- TFile *file1 = 0;
- if (treeK) file1 = treeK->GetCurrentFile();
- file1->cd();
+ track = nextTrack;
- } // end if addBackground
+ }
+
+ fRecTracksPtr->Compress();
+
+ return kTRUE;
- // call tracking fortran program
- reconstmuon(ifit,idebug,nev,idres,ireadgeant);
}
-//________________________________________________________________________________
-void AliMUONTrackReconstructor::Init(Double_t &seff, Double_t &sb0, Double_t &sbl3)
+ //__________________________________________________________________________
+Bool_t AliMUONTrackReconstructor::FollowTrackInChamber(AliMUONTrack &trackCandidate, AliMUONVClusterStore& clusterStore, Int_t nextChamber)
{
- //
- // introduce in fortran program somme parameters and cuts for tracking
- // create output file "reconst.root" (histos + ntuple)
- cutpxz(fSPxzCut); // Pxz cut (GeV/c) to begin the track finding
- sigmacut(fSSigmaCut); // Number of sigmas delimiting the searching areas
- xpreci(fSXPrec); // Chamber precision in X (cm)
- ypreci(fSYPrec); // Chamber precision in Y (cm)
- reco_init(seff,sb0,sbl3);
+ /// Follow trackCandidate in chamber(0..) nextChamber 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.
+ AliDebug(1,Form("Enter FollowTrackInChamber(1..) %d", nextChamber+1));
+
+ Double_t chi2WithOneCluster = AliMUONTrack::MaxChi2();
+ Double_t maxChi2WithOneCluster = 2. * GetRecoParam()->GetSigmaCutForTracking() *
+ GetRecoParam()->GetSigmaCutForTracking(); // 2 because 2 quantities in chi2
+ Double_t bestChi2WithOneCluster = maxChi2WithOneCluster;
+ Bool_t foundOneCluster = kFALSE;
+ AliMUONTrack *newTrack = 0x0;
+ AliMUONVCluster *cluster;
+ AliMUONTrackParam extrapTrackParam;
+ AliMUONTrackParam extrapTrackParamAtCh;
+ AliMUONTrackParam extrapTrackParamAtCluster;
+ AliMUONTrackParam bestTrackParamAtCluster;
+
+ // Get track parameters according to the propagation direction
+ if (nextChamber > 7) extrapTrackParamAtCh = *(AliMUONTrackParam*)trackCandidate.GetTrackParamAtCluster()->Last();
+ else extrapTrackParamAtCh = *(AliMUONTrackParam*)trackCandidate.GetTrackParamAtCluster()->First();
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 2) || (AliLog::GetGlobalDebugLevel() >= 2)) {
+ cout<<endl<<"Track parameters and covariances at first cluster:"<<endl;
+ extrapTrackParamAtCh.GetParameters().Print();
+ extrapTrackParamAtCh.GetCovariances().Print();
+ }
+
+ // Add MCS effect
+ Int_t currentChamber = extrapTrackParamAtCh.GetClusterPtr()->GetChamberId();
+ AliMUONTrackExtrap::AddMCSEffect(&extrapTrackParamAtCh,AliMUONConstants::ChamberThicknessInX0(currentChamber),-1.);
+
+ // Add MCS in the missing chamber(s) if any
+ while (currentChamber > nextChamber + 1) {
+ // extrapolation to the missing chamber
+ currentChamber--;
+ if (!AliMUONTrackExtrap::ExtrapToZCov(&extrapTrackParamAtCh, AliMUONConstants::DefaultChamberZ(currentChamber))) return kFALSE;
+ // add MCS effect
+ AliMUONTrackExtrap::AddMCSEffect(&extrapTrackParamAtCh,AliMUONConstants::ChamberThicknessInX0(currentChamber),-1.);
+ }
+
+ //Extrapolate trackCandidate to chamber
+ if (!AliMUONTrackExtrap::ExtrapToZCov(&extrapTrackParamAtCh, AliMUONConstants::DefaultChamberZ(nextChamber))) return kFALSE;
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 2) || (AliLog::GetGlobalDebugLevel() >= 2)) {
+ cout<<endl<<"Track parameters and covariances at first cluster extrapolated to z = "<<AliMUONConstants::DefaultChamberZ(nextChamber)<<":"<<endl;
+ extrapTrackParamAtCh.GetParameters().Print();
+ extrapTrackParamAtCh.GetCovariances().Print();
+ }
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowTrackInStation: look for clusters in chamber(1..): " << nextChamber+1 << endl;
+ }
+
+ // Ask the clustering to reconstruct new clusters around the track position in the current chamber
+ // except for station 4 and 5 that are already entirely clusterized
+ if (GetRecoParam()->CombineClusterTrackReco()) {
+ if (nextChamber < 6) AskForNewClustersInChamber(extrapTrackParamAtCh, clusterStore, nextChamber);
+ }
+
+ // Create iterators to loop over clusters in both chambers
+ TIter next(clusterStore.CreateChamberIterator(nextChamber,nextChamber));
+
+ // look for cluster in chamber
+ while ( ( cluster = static_cast<AliMUONVCluster*>(next()) ) ) {
+
+ // try to add the current cluster fast
+ if (!TryOneClusterFast(extrapTrackParamAtCh, cluster)) continue;
+
+ // try to add the current cluster accuratly
+ chi2WithOneCluster = TryOneCluster(extrapTrackParamAtCh, cluster, extrapTrackParamAtCluster);
+
+ // if good chi2 then consider to add cluster
+ if (chi2WithOneCluster < maxChi2WithOneCluster) {
+ foundOneCluster = kTRUE;
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowTrackInStation: found one cluster in chamber(1..): " << nextChamber+1
+ << " (Chi2 = " << chi2WithOneCluster << ")" << endl;
+ cluster->Print();
+ }
+
+ if (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);
+ UpdateTrack(*newTrack,extrapTrackParamAtCluster);
+ fNRecTracks++;
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowTrackInStation: added one cluster in chamber(1..): " << nextChamber+1 << endl;
+ if (AliLog::GetGlobalDebugLevel() >= 3) newTrack->RecursiveDump();
+ }
+
+ } else if (chi2WithOneCluster < bestChi2WithOneCluster) {
+ // keep track of the best single cluster except if a couple of clusters has already been found
+ bestChi2WithOneCluster = chi2WithOneCluster;
+ bestTrackParamAtCluster = extrapTrackParamAtCluster;
+ }
+
+ }
+
+ }
+
+ // fill out the best track if required else clean up the fRecTracksPtr array
+ if (!GetRecoParam()->TrackAllTracks()) {
+ if (foundOneCluster) {
+ UpdateTrack(trackCandidate,bestTrackParamAtCluster);
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowTrackInStation: added the best cluster in chamber(1..): " << bestTrackParamAtCluster.GetClusterPtr()->GetChamberId()+1 << endl;
+ if (AliLog::GetGlobalDebugLevel() >= 3) newTrack->RecursiveDump();
+ }
+
+ } else return kFALSE;
+
+ } else if (foundOneCluster) {
+
+ // remove obsolete track
+ fRecTracksPtr->Remove(&trackCandidate);
+ fNRecTracks--;
+
+ } else return kFALSE;
+
+ return kTRUE;
+
}
-//__________________________________________
-void AliMUONTrackReconstructor::FinishEvent()
+ //__________________________________________________________________________
+Bool_t AliMUONTrackReconstructor::FollowTrackInStation(AliMUONTrack &trackCandidate, AliMUONVClusterStore& clusterStore, Int_t nextStation)
{
- // Finish
- // TTree *treeK = gAlice->TreeK();
- // TFile *file1 = 0;
- // if (treeK) file1 = treeK->GetCurrentFile();
- // file1->cd();
+ /// Follow trackCandidate in station(0..) nextStation 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.
+ AliDebug(1,Form("Enter FollowTrackInStation(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 = 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() *
+ 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 extrapTrackParam;
+ AliMUONTrackParam extrapTrackParamAtCh;
+ AliMUONTrackParam extrapTrackParamAtCluster1;
+ AliMUONTrackParam extrapTrackParamAtCluster2;
+ AliMUONTrackParam bestTrackParamAtCluster1;
+ AliMUONTrackParam bestTrackParamAtCluster2;
+
+ // Get track parameters according to the propagation direction
+ if (nextStation==4) extrapTrackParamAtCh = *(AliMUONTrackParam*)trackCandidate.GetTrackParamAtCluster()->Last();
+ else extrapTrackParamAtCh = *(AliMUONTrackParam*)trackCandidate.GetTrackParamAtCluster()->First();
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 2) || (AliLog::GetGlobalDebugLevel() >= 2)) {
+ cout<<endl<<"Track parameters and covariances at first cluster:"<<endl;
+ extrapTrackParamAtCh.GetParameters().Print();
+ extrapTrackParamAtCh.GetCovariances().Print();
+ }
+
+ // Add MCS effect
+ Int_t currentChamber = extrapTrackParamAtCh.GetClusterPtr()->GetChamberId();
+ AliMUONTrackExtrap::AddMCSEffect(&extrapTrackParamAtCh,AliMUONConstants::ChamberThicknessInX0(currentChamber),-1.);
+
+ // Add MCS in the missing chamber(s) if any
+ while (ch1 < ch2 && currentChamber > ch2 + 1) {
+ // extrapolation to the missing chamber
+ currentChamber--;
+ if (!AliMUONTrackExtrap::ExtrapToZCov(&extrapTrackParamAtCh, AliMUONConstants::DefaultChamberZ(currentChamber))) return kFALSE;
+ // add MCS effect
+ AliMUONTrackExtrap::AddMCSEffect(&extrapTrackParamAtCh,AliMUONConstants::ChamberThicknessInX0(currentChamber),-1.);
+ }
+
+ //Extrapolate trackCandidate to chamber "ch2"
+ if (!AliMUONTrackExtrap::ExtrapToZCov(&extrapTrackParamAtCh, AliMUONConstants::DefaultChamberZ(ch2))) return kFALSE;
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 2) || (AliLog::GetGlobalDebugLevel() >= 2)) {
+ cout<<endl<<"Track parameters and covariances at first cluster extrapolated to z = "<<AliMUONConstants::DefaultChamberZ(ch2)<<":"<<endl;
+ extrapTrackParamAtCh.GetParameters().Print();
+ extrapTrackParamAtCh.GetCovariances().Print();
+ }
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowTrackInStation: look for clusters in chamber(1..): " << ch2+1 << endl;
+ }
+
+ // Ask the clustering to reconstruct new clusters around the track position in the current station
+ // except for station 4 and 5 that are already entirely clusterized
+ if (GetRecoParam()->CombineClusterTrackReco()) {
+ if (nextStation < 3) AskForNewClustersInStation(extrapTrackParamAtCh, clusterStore, nextStation);
+ }
+
+ 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;
+
+ // 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(extrapTrackParamAtCh, clusterCh2)) continue;
+
+ // try to add the current cluster accuratly
+ chi2WithOneCluster = TryOneCluster(extrapTrackParamAtCh, 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","AliMUONTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowTrackInStation: found one cluster in chamber(1..): " << ch2+1
+ << " (Chi2 = " << chi2WithOneCluster << ")" << endl;
+ clusterCh2->Print();
+ cout << " look for second clusters in chamber(1..): " << ch1+1 << " ..." << endl;
+ }
+
+ // add MCS effect for next step
+ AliMUONTrackExtrap::AddMCSEffect(&extrapTrackParamAtCluster2,AliMUONConstants::ChamberThicknessInX0(ch2),-1.);
+
+ // copy new track parameters for next step
+ extrapTrackParam = extrapTrackParamAtCluster2;
+
+ //Extrapolate track parameters to chamber "ch1"
+ Bool_t normalExtrap = AliMUONTrackExtrap::ExtrapToZ(&extrapTrackParam, AliMUONConstants::DefaultChamberZ(ch1));
+
+ // reset cluster iterator of chamber 1
+ nextInCh1.Reset();
+ iCluster1 = -1;
+
+ // look for second candidates in chamber 1
+ if (normalExtrap) while ( ( clusterCh1 = static_cast<AliMUONVCluster*>(nextInCh1()) ) ) {
+ iCluster1++;
+
+ // try to add the current cluster fast
+ if (!TryOneClusterFast(extrapTrackParam, clusterCh1)) continue;
+
+ // try to add the current cluster accurately
+ chi2WithTwoClusters = TryTwoClusters(extrapTrackParamAtCluster2, clusterCh1, extrapTrackParamAtCluster1);
+
+ // if good chi2 then create a new track by adding the 2 clusters to the "trackCandidate"
+ if (chi2WithTwoClusters < maxChi2WithTwoClusters) {
+ foundSecondCluster = kTRUE;
+ foundTwoClusters = kTRUE;
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowTrackInStation: found second cluster in chamber(1..): " << ch1+1
+ << " (Global Chi2 = " << chi2WithTwoClusters << ")" << endl;
+ clusterCh1->Print();
+ }
+
+ if (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);
+ UpdateTrack(*newTrack,extrapTrackParamAtCluster1,extrapTrackParamAtCluster2);
+ fNRecTracks++;
+
+ // Tag clusterCh1 as used
+ clusterCh1Used[iCluster1] = kTRUE;
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowTrackInStation: 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;
+ }
+
+ }
+
+ }
+
+ // if no clusterCh1 found then consider to add clusterCh2 only
+ if (!foundSecondCluster) {
+ foundOneCluster = kTRUE;
+
+ if (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);
+ UpdateTrack(*newTrack,extrapTrackParamAtCluster2);
+ fNRecTracks++;
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowTrackInStation: 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 single 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 (GetRecoParam()->TrackAllTracks() || !foundTwoClusters) {
+
+ // add MCS effect for next step
+ AliMUONTrackExtrap::AddMCSEffect(&extrapTrackParamAtCh,AliMUONConstants::ChamberThicknessInX0(ch2),-1.);
+
+ //Extrapolate trackCandidate to chamber "ch1"
+ Bool_t normalExtrap = AliMUONTrackExtrap::ExtrapToZCov(&extrapTrackParamAtCh, AliMUONConstants::DefaultChamberZ(ch1));
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 2) || (AliLog::GetGlobalDebugLevel() >= 2)) {
+ cout<<endl<<"Track parameters and covariances at first cluster extrapolated to z = "<<AliMUONConstants::DefaultChamberZ(ch1)<<":"<<endl;
+ extrapTrackParamAtCh.GetParameters().Print();
+ extrapTrackParamAtCh.GetCovariances().Print();
+ }
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowTrackInStation: look for single clusters in chamber(1..): " << ch1+1 << endl;
+ }
+
+ // reset cluster iterator of chamber 1
+ nextInCh1.Reset();
+ iCluster1 = -1;
+
+ // look for second candidates in chamber 1
+ if (normalExtrap) while ( ( clusterCh1 = static_cast<AliMUONVCluster*>(nextInCh1()) ) ) {
+ iCluster1++;
+
+ if (clusterCh1Used[iCluster1]) continue; // Skip cluster already used
+
+ // try to add the current cluster fast
+ if (!TryOneClusterFast(extrapTrackParamAtCh, clusterCh1)) continue;
+
+ // try to add the current cluster accuratly
+ chi2WithOneCluster = TryOneCluster(extrapTrackParamAtCh, 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","AliMUONTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowTrackInStation: found one cluster in chamber(1..): " << ch1+1
+ << " (Chi2 = " << chi2WithOneCluster << ")" << endl;
+ clusterCh1->Print();
+ }
+
+ if (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);
+ UpdateTrack(*newTrack,extrapTrackParamAtCluster1);
+ fNRecTracks++;
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowTrackInStation: added one cluster in chamber(1..): " << ch1+1 << endl;
+ if (AliLog::GetGlobalDebugLevel() >= 3) newTrack->RecursiveDump();
+ }
+
+ } else if (chi2WithOneCluster < bestChi2WithOneCluster) {
+ // keep track of the best single 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 (!GetRecoParam()->TrackAllTracks()) {
+ if (foundTwoClusters) {
+ UpdateTrack(trackCandidate,bestTrackParamAtCluster1,bestTrackParamAtCluster2);
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowTrackInStation: added the two best clusters in station(1..): " << nextStation+1 << endl;
+ if (AliLog::GetGlobalDebugLevel() >= 3) newTrack->RecursiveDump();
+ }
+
+ } else if (foundOneCluster) {
+ UpdateTrack(trackCandidate,bestTrackParamAtCluster1);
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "FollowTrackInStation: 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 AliMUONTrackReconstructor::Close()
+ //__________________________________________________________________________
+Double_t AliMUONTrackReconstructor::TryTwoClusters(const AliMUONTrackParam &trackParamAtCluster1, AliMUONVCluster* cluster2,
+ AliMUONTrackParam &trackParamAtCluster2)
{
- //
- // write histos and ntuple to "reconst.root" file
- reco_term();
+/// Test the compatibility between the track and the 2 clusters together (using trackParam's covariance matrix):
+/// return the corresponding Chi2 accounting for covariances between the 2 clusters
+/// return trackParamAtCluster1 & 2
+
+ // extrapolate track parameters at the z position of the second cluster (no need to extrapolate the covariances)
+ // and set pointer to cluster into trackParamAtCluster
+ trackParamAtCluster2.SetParameters(trackParamAtCluster1.GetParameters());
+ trackParamAtCluster2.SetZ(trackParamAtCluster1.GetZ());
+ trackParamAtCluster2.SetClusterPtr(cluster2);
+ if (!AliMUONTrackExtrap::ExtrapToZ(&trackParamAtCluster2, cluster2->GetZ())) return 2.*AliMUONTrack::MaxChi2();
+
+ // Set differences between track and the 2 clusters in the bending and non bending directions
+ AliMUONVCluster* cluster1 = trackParamAtCluster1.GetClusterPtr();
+ TMatrixD dPos(4,1);
+ dPos(0,0) = cluster1->GetX() - trackParamAtCluster1.GetNonBendingCoor();
+ dPos(1,0) = cluster1->GetY() - trackParamAtCluster1.GetBendingCoor();
+ dPos(2,0) = cluster2->GetX() - trackParamAtCluster2.GetNonBendingCoor();
+ dPos(3,0) = cluster2->GetY() - trackParamAtCluster2.GetBendingCoor();
+
+ // Calculate the error matrix from the track parameter covariances at first cluster
+ TMatrixD error(4,4);
+ error.Zero();
+ if (trackParamAtCluster1.CovariancesExist()) {
+ // Save track parameters at first cluster
+ TMatrixD paramAtCluster1Save(trackParamAtCluster1.GetParameters());
+
+ // Save track coordinates at second cluster
+ Double_t nonBendingCoor2 = trackParamAtCluster2.GetNonBendingCoor();
+ Double_t bendingCoor2 = trackParamAtCluster2.GetBendingCoor();
+
+ // copy track parameters at first cluster for jacobian calculation
+ AliMUONTrackParam trackParam(trackParamAtCluster1);
+
+ // Get the pointer to the parameter covariance matrix at first cluster
+ const TMatrixD& kParamCov = trackParam.GetCovariances();
+
+ // Calculate the jacobian related to the transformation between track parameters
+ // at first cluster and track coordinates at the 2 cluster z-positions
+ TMatrixD jacob(4,5);
+ jacob.Zero();
+ // first derivative at the first cluster:
+ jacob(0,0) = 1.; // dx1/dx
+ jacob(1,2) = 1.; // dy1/dy
+ // first derivative at the second cluster:
+ TMatrixD dParam(5,1);
+ Double_t direction[5] = {-1.,-1.,1.,1.,-1.};
+ for (Int_t i=0; i<5; i++) {
+ // Skip jacobian calculation for parameters with no associated error
+ if (kParamCov(i,i) == 0.) continue;
+ // Small variation of parameter i only
+ for (Int_t j=0; j<5; j++) {
+ if (j==i) {
+ dParam(j,0) = TMath::Sqrt(kParamCov(i,i));
+ dParam(j,0) *= TMath::Sign(1.,direction[j]*paramAtCluster1Save(j,0)); // variation always in the same direction
+ } else dParam(j,0) = 0.;
+ }
+
+ // Set new track parameters at first cluster
+ trackParam.SetParameters(paramAtCluster1Save);
+ trackParam.AddParameters(dParam);
+ trackParam.SetZ(cluster1->GetZ());
+
+ // Extrapolate new track parameters to the z position of the second cluster
+ if (!AliMUONTrackExtrap::ExtrapToZ(&trackParam,cluster2->GetZ())) return 2.*AliMUONTrack::MaxChi2();
+
+ // Calculate the jacobian
+ jacob(2,i) = (trackParam.GetNonBendingCoor() - nonBendingCoor2) / dParam(i,0); // dx2/dParami
+ jacob(3,i) = (trackParam.GetBendingCoor() - bendingCoor2 ) / dParam(i,0); // dy2/dParami
+ }
+
+ // Calculate the error matrix
+ TMatrixD tmp(jacob,TMatrixD::kMult,kParamCov);
+ error = TMatrixD(tmp,TMatrixD::kMultTranspose,jacob);
+ }
+
+ // Add cluster resolution to the error matrix
+ error(0,0) += cluster1->GetErrX2();
+ error(1,1) += cluster1->GetErrY2();
+ error(2,2) += cluster2->GetErrX2();
+ error(3,3) += cluster2->GetErrY2();
+
+ // invert the error matrix for Chi2 calculation
+ if (error.Determinant() != 0) {
+ error.Invert();
+ } else {
+ AliWarning(" Determinant error=0");
+ return 2.*AliMUONTrack::MaxChi2();
+ }
+
+ // Compute the Chi2 value
+ TMatrixD tmp2(dPos,TMatrixD::kTransposeMult,error);
+ TMatrixD result(tmp2,TMatrixD::kMult,dPos);
+
+ return result(0,0);
+
}
-//________________________________________________________
-void chfill(Int_t &id, Float_t &x, Float_t &y, Float_t &w)
+ //__________________________________________________________________________
+void AliMUONTrackReconstructor::UpdateTrack(AliMUONTrack &track, AliMUONTrackParam &trackParamAtCluster)
{
- //
- // fill histo like hfill in fortran
- char name[5];
- sprintf(name,"h%d",id);
- TH1F *h1 = (TH1F*) gDirectory->Get(name);
- h1->Fill(x);
+ /// Add 1 cluster to the track candidate
+ /// Update chi2 of the track
+
+ // Compute local chi2
+ AliMUONVCluster* cluster = trackParamAtCluster.GetClusterPtr();
+ Double_t deltaX = trackParamAtCluster.GetNonBendingCoor() - cluster->GetX();
+ Double_t deltaY = trackParamAtCluster.GetBendingCoor() - cluster->GetY();
+ Double_t localChi2 = deltaX*deltaX / cluster->GetErrX2() +
+ deltaY*deltaY / cluster->GetErrY2();
+
+ // Flag cluster as being not removable
+ if (GetRecoParam()->RequestStation(cluster->GetChamberId()/2))
+ trackParamAtCluster.SetRemovable(kFALSE);
+ else trackParamAtCluster.SetRemovable(kTRUE);
+ trackParamAtCluster.SetLocalChi2(0.); // --> Local chi2 not used
+
+ // Update the chi2 of the new track
+ track.SetGlobalChi2(track.GetGlobalChi2() + localChi2);
+
+ // Update TrackParamAtCluster
+ track.AddTrackParamAtCluster(trackParamAtCluster,*cluster);
+
}
-//_________________________________________________________
-void chfill2(Int_t &id, Float_t &x, Float_t &y, Float_t &w)
+ //__________________________________________________________________________
+void AliMUONTrackReconstructor::UpdateTrack(AliMUONTrack &track, AliMUONTrackParam &trackParamAtCluster1, AliMUONTrackParam &trackParamAtCluster2)
{
- //
- // fill histo like hfill2 in fortran
- char name[5];
- sprintf(name,"h%d",id);
- TH2F *h2 = (TH2F*) gDirectory->Get(name);
- h2->Fill(x,y,w);
+ /// Add 2 clusters to the track candidate
+ /// Update track and local chi2
+
+ // Update local chi2 at first cluster
+ AliMUONVCluster* cluster1 = trackParamAtCluster1.GetClusterPtr();
+ Double_t deltaX = trackParamAtCluster1.GetNonBendingCoor() - cluster1->GetX();
+ Double_t deltaY = trackParamAtCluster1.GetBendingCoor() - cluster1->GetY();
+ Double_t localChi2AtCluster1 = deltaX*deltaX / cluster1->GetErrX2() +
+ deltaY*deltaY / cluster1->GetErrY2();
+ trackParamAtCluster1.SetLocalChi2(localChi2AtCluster1);
+
+ // Flag first cluster as being removable
+ trackParamAtCluster1.SetRemovable(kTRUE);
+
+ // Update local chi2 at second cluster
+ AliMUONVCluster* cluster2 = trackParamAtCluster2.GetClusterPtr();
+ deltaX = trackParamAtCluster2.GetNonBendingCoor() - cluster2->GetX();
+ deltaY = trackParamAtCluster2.GetBendingCoor() - cluster2->GetY();
+ Double_t localChi2AtCluster2 = deltaX*deltaX / cluster2->GetErrX2() +
+ deltaY*deltaY / cluster2->GetErrY2();
+ trackParamAtCluster2.SetLocalChi2(localChi2AtCluster2);
+
+ // Flag first cluster as being removable
+ trackParamAtCluster2.SetRemovable(kTRUE);
+
+ // Update the chi2 of the new track
+ track.SetGlobalChi2(track.GetGlobalChi2() + localChi2AtCluster1 + localChi2AtCluster2);
+
+ // Update TrackParamAtCluster
+ track.AddTrackParamAtCluster(trackParamAtCluster1,*cluster1);
+ track.AddTrackParamAtCluster(trackParamAtCluster2,*cluster2);
+
}
-//__________________________________________
-void chf1(Int_t &id, Float_t &x, Float_t &w)
+ //__________________________________________________________________________
+Bool_t AliMUONTrackReconstructor::RecoverTrack(AliMUONTrack &trackCandidate, AliMUONVClusterStore& clusterStore, Int_t nextStation)
{
- //
- // fill histo like hf1 in fortran
- char name[5];
- sprintf(name,"h%d",id);
- TH1F *h1 = (TH1F*) gDirectory->Get(name);
- h1->Fill(x,w);
+ /// Try to recover the track candidate in the next station
+ /// by removing the worst of the two clusters attached in the current station
+ /// Return kTRUE if recovering succeeds
+ AliDebug(1,"Enter RecoverTrack");
+
+ // Do not try to recover track until we have attached cluster(s) on station(1..) 3
+ if (nextStation > 1) return kFALSE;
+
+ Int_t worstClusterNumber = -1;
+ Double_t localChi2, worstLocalChi2 = -1.;
+
+ // Look for the cluster to remove
+ for (Int_t clusterNumber = 0; clusterNumber < 2; clusterNumber++) {
+ AliMUONTrackParam *trackParamAtCluster = (AliMUONTrackParam*)trackCandidate.GetTrackParamAtCluster()->UncheckedAt(clusterNumber);
+
+ // check if current cluster is in the previous station
+ if (trackParamAtCluster->GetClusterPtr()->GetChamberId()/2 != nextStation+1) break;
+
+ // check if current cluster is removable
+ if (!trackParamAtCluster->IsRemovable()) return kFALSE;
+
+ // reset the current cluster as beig not removable if it is on a required station
+ if (GetRecoParam()->RequestStation(nextStation+1)) trackParamAtCluster->SetRemovable(kFALSE);
+
+ // Pick up cluster with the worst chi2
+ localChi2 = trackParamAtCluster->GetLocalChi2();
+ if (localChi2 > worstLocalChi2) {
+ worstLocalChi2 = localChi2;
+ worstClusterNumber = clusterNumber;
+ }
+
+ }
+
+ // check if worst cluster found
+ if (worstClusterNumber < 0) return kFALSE;
+
+ // Remove the worst cluster
+ trackCandidate.RemoveTrackParamAtCluster((AliMUONTrackParam*)trackCandidate.GetTrackParamAtCluster()->UncheckedAt(worstClusterNumber));
+
+ // Re-fit the track:
+ // Do not take into account the multiple scattering to speed up the fit
+ // Calculate the track parameter covariance matrix
+ Fit(trackCandidate, kFALSE, kFALSE, kTRUE);
+
+ // skip track if the normalized chi2 is too high
+ if (trackCandidate.GetNormalizedChi2() > GetRecoParam()->GetSigmaCutForTracking() * GetRecoParam()->GetSigmaCutForTracking()) return kFALSE;
+
+ // skip track out of limits
+ if (!IsAcceptable(*((AliMUONTrackParam*)trackCandidate.GetTrackParamAtCluster()->First()))) return kFALSE;
+
+ // Look for new cluster(s) in next station
+ return FollowTrackInStation(trackCandidate,clusterStore,nextStation);
+
}
-//_________________
-void hist_create()
+ //__________________________________________________________________________
+void AliMUONTrackReconstructor::SetVertexErrXY2ForFit(AliMUONTrack &trackCandidate)
{
- //
- // Create an output file ("reconst.root")
- // Create some histograms and an ntuple
-
- gAliFileGlobal = new TFile("reconst.root","RECREATE","Ntuple - reconstruction");
-
- gAliNtupleGlobal = new TTree("ntuple","Reconst ntuple");
- gAliNtupleGlobal->Branch("ievr",&NtupleSt.ievr,"ievr/I");
- gAliNtupleGlobal->Branch("ntrackr",&NtupleSt.ntrackr,"ntrackr/I");
- gAliNtupleGlobal->Branch("istatr",&NtupleSt.istatr[0],"istatr[500]/I");
- gAliNtupleGlobal->Branch("isignr",&NtupleSt.isignr[0],"isignr[500]/I");
- gAliNtupleGlobal->Branch("pxr",&NtupleSt.pxr[0],"pxr[500]/F");
- gAliNtupleGlobal->Branch("pyr",&NtupleSt.pyr[0],"pyr[500]/F");
- gAliNtupleGlobal->Branch("pzr",&NtupleSt.pzr[0],"pzr[500]/F");
- gAliNtupleGlobal->Branch("zvr",&NtupleSt.zvr[0],"zvr[500]/F");
- gAliNtupleGlobal->Branch("chi2r",&NtupleSt.chi2r[0],"chi2r[500]/F");
- gAliNtupleGlobal->Branch("pxv",&NtupleSt.pxv[0],"pxv[500]/F");
- gAliNtupleGlobal->Branch("pyv",&NtupleSt.pyv[0],"pyv[500]/F");
- gAliNtupleGlobal->Branch("pzv",&NtupleSt.pzv[0],"pzv[500]/F");
-
- // test aliroot
-
- new TH1F("h100","particule id du hit geant",20,0.,20.);
- new TH1F("h101","position en x du hit geant",100,-200.,200.);
- new TH1F("h102","position en y du hit geant",100,-200.,200.);
- new TH1F("h103","chambre de tracking concernee",15,0.,14.);
- new TH1F("h104","moment ptot du hit geant",50,0.,100.);
- new TH1F("h105","px au vertex",50,0.,20.);
- new TH1F("h106","py au vertex",50,0.,20.);
- new TH1F("h107","pz au vertex",50,0.,20.);
- new TH1F("h108","position zv",50,-15.,15.);
- new TH1F("h109","position en x du hit reconstruit",100,-300.,300.);
- new TH1F("h110","position en y du hit reconstruit",100,-300.,300.);
- new TH1F("h111","delta x station 1",100,-0.3,0.3);
- new TH1F("h112","delta x station 2",100,-0.3,0.3);
- new TH1F("h113","delta x station 3",100,-0.3,0.3);
- new TH1F("h114","delta x station 4",100,-0.5,0.5);
- new TH1F("h115","delta x station 5",100,-0.5,0.5);
- new TH1F("h116","delta x station 1",100,-2,2);
- new TH1F("h117","delta x station 2",100,-2,2);
- new TH1F("h121","delta y station 1",100,-0.04,0.04);
- new TH1F("h122","delta y station 2",100,-0.04,0.04);
- new TH1F("h123","delta y station 3",100,-0.04,0.04);
- new TH1F("h124","delta y station 4",100,-0.04,0.04);
- new TH1F("h125","delta y station 5",100,-0.04,0.04);
-
- /* char hname[30];
- char hname1[30];
- for (int i=0;i<10;i++) {
- sprintf(hname,"deltax%d",i);
- sprintf(hname1,"h12%d",i);
- new TH1F(hname1,hname ,100,-0.4,0.4);
- sprintf(hname,"deltay%d",i);
- sprintf(hname1,"h13%d",i);
- new TH1F(hname1,hname ,100,-0.4,0.4);
- }
- */
- new TH2F("h2000","VAR X st. 5",30,3.0,183.0,100,0.,25.);
- new TH2F("h2001","VAR Y st. 5",30,3.0,183.0,100,0.,25.);
-
- new TH2F("h2500","P vs X HHIT",30,3.0,183.0,200,0.,200.);
- new TH2F("h2501","P vs X HHIT**2",30,3.0,183.0,200,0.,5000.);
- new TH2F("h2502","P vs X EPH2 st. 5",30,3.0,183.0,100,0.,0.000005);
- new TH2F("h2503","P vs X EAL2 st. 5",30,3.0,183.0,100,0.,0.01);
- //new TH2F("h2504","P vs X EXM2 st. 5",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2504","P vs X EXM2 st. 5",30,3.0,183.0,100,0.,0.1);
- new TH2F("h2505","P vs X EYM2 st. 5",30,3.0,183.0,100,0.,30.);
-
- new TH2F("h2507","P vs X EPH st. 5",30,3.0,183.0,100,0.,0.003);
- new TH2F("h2508","P vs X EAL st. 5",30,3.0,183.0,100,0.,0.3);
- //new TH2F("h2509","P vs X EXM st. 5",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2509","P vs X EXM st. 5",30,3.0,183.0,100,0.,0.4);
- new TH2F("h2510","P vs X EYM st. 5",30,3.0,183.0,100,0.,30.);
-
- new TH2F("h2511","P vs X EPH cut st. 5",30,3.0,183.0,100,0.,0.01);
- new TH2F("h2512","P vs X EAL cut st. 5",30,3.0,183.0,100,0.,0.3);
- //new TH2F("h2513","P vs X EXM cut st. 5",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2513","P vs X EXM cut st. 5",30,3.0,183.0,100,0.,0.4);
- new TH2F("h2514","P vs X EYM cut st. 5",30,3.0,183.0,100,0.,30.);
- // 4
- new TH2F("h2400","P vs X HHIT",30,3.0,183.0,200,0.,200.);
- new TH2F("h2401","P vs X HHIT**2",30,3.0,183.0,200,0.,5000.);
- new TH2F("h2402","P vs X EPH2 st. 4",30,3.0,183.0,100,0.,0.000005);
- new TH2F("h2403","P vs X EAL2 st. 4",30,3.0,183.0,100,0.,0.05);
- //new TH2F("h2404","P vs X EXM2 st. 4",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2404","P vs X EXM2 st. 4",30,3.0,183.0,100,0.,0.1);
- new TH2F("h2405","P vs X EYM2 st. 4",30,3.0,183.0,100,0.,30.);
-
- new TH2F("h2407","P vs X EPH st. 4",30,3.0,183.0,100,0.,0.003);
- new TH2F("h2408","P vs X EAL st. 4",30,3.0,183.0,100,0.,0.3);
- //new TH2F("h2409","P vs X EXM st. 4",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2409","P vs X EXM st. 4",30,3.0,183.0,100,0.,0.1);
- new TH2F("h2410","P vs X EYM st. 4",30,3.0,183.0,100,0.,30.);
-
- new TH2F("h2411","P vs X EPH cut st. 4",30,3.0,183.0,100,0.,0.01);
- new TH2F("h2412","P vs X EAL cut st. 4",30,3.0,183.0,100,0.,0.3);
- //new TH2F("h2413","P vs X EXM cut st. 4",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2413","P vs X EXM cut st. 4",30,3.0,183.0,100,0.,0.1);
- new TH2F("h2414","P vs X EYM cut st. 4",30,3.0,183.0,100,0.,30.);
- // 3
- new TH1F("h2301","P2",30,3.0,183.0);
- new TH2F("h2302","P2 vs X EPH2 st. 3",30,3.0,183.0,100,0.,0.0006);
- new TH2F("h2303","P2 vs X EAL2 st. 3",30,3.0,183.0,100,0.,0.0005);
- //new TH2F("h2304","P2 vs X EXM2 st. 3",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2304","P2 vs X EXM2 st. 3",30,3.0,183.0,100,0.,2.);
- new TH2F("h2305","P2 vs X EYM2 st. 3",30,3.0,183.0,100,0.,3.);
-
- new TH2F("h2307","P vs X EPH2 st. 3",30,3.0,183.0,100,0.,0.0006);
- new TH2F("h2308","P vs X EAL2 st. 3",30,3.0,183.0,100,0.,0.005);
- //new TH2F("h2309","P vs X EXM2 st. 3",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2309","P vs X EXM2 st. 3",30,3.0,183.0,100,0.,2.);
- new TH2F("h2310","P vs X EYM2 st. 3",30,3.0,183.0,100,0.,3.);
-
- new TH2F("h2311","P vs X EPH cut st. 3",30,3.0,183.0,100,0.,0.06);
- new TH2F("h2312","P vs X EAL cut st. 3",30,3.0,183.0,100,0.,0.05);
- //new TH2F("h2313","P vs X EXM cut st. 3",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2313","P vs X EXM cut st. 3",30,3.0,183.0,100,0.,6.);
- new TH2F("h2314","P vs X EYM cut st. 3",30,3.0,183.0,100,0.,7.);
-
- new TH2F("h2315","P2 vs X EPH cut st. 3",30,3.0,183.0,100,0.,0.06);
- new TH2F("h2316","P2 vs X EAL cut st. 3",30,3.0,183.0,100,0.,0.05);
- //new TH2F("h2317","P2 vs X EXM cut st. 3",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2317","P2 vs X EXM cut st. 3",30,3.0,183.0,100,0.,6.);
- new TH2F("h2318","P2 vs X EYM cut st. 3",30,3.0,183.0,100,0.,7.);
-
- // 2
- new TH1F("h2201","P2",30,3.0,183.0);
- new TH2F("h2202","P2 vs X EPH2 st. 2",30,3.0,183.0,100,0.,0.0006);
- new TH2F("h2203","P2 vs X EAL2 st. 2",30,3.0,183.0,100,0.,0.005);
- //new TH2F("h2204","P2 vs X EXM2 st. 2",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2204","P2 vs X EXM2 st. 2",30,3.0,183.0,100,0.,7.);
- new TH2F("h2205","P2 vs X EYM2 st. 2",30,3.0,183.0,100,0.,5.);
-
- new TH2F("h2207","P vs X EPH2 st. 2",30,3.0,183.0,100,0.,0.0006);
- new TH2F("h2208","P vs X EAL2 st. 2",30,3.0,183.0,100,0.,0.005);
- //new TH2F("h2209","P vs X EXM2 st. 2",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2209","P vs X EXM2 st. 2",30,3.0,183.0,100,0.,7.);
- new TH2F("h2210","P vs X EYM2 st. 2",30,3.0,183.0,100,0.,5.);
-
- new TH2F("h2211","P vs X EPH cut st. 2",30,3.0,183.0,100,0.,0.05);
- new TH2F("h2212","P vs X EAL cut st. 2",30,3.0,183.0,100,0.,0.2);
- //new TH2F("h2213","P vs X EXM cut st. 2",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2213","P vs X EXM cut st. 2",30,3.0,183.0,100,0.,11.);
- new TH2F("h2214","P vs X EYM cut st. 2",30,3.0,183.0,100,0.,10.);
-
- new TH2F("h2215","P2 vs X EPH cut st. 2",30,3.0,183.0,100,0.,0.05);
- new TH2F("h2216","P2 vs X EAL cut st. 2",30,3.0,183.0,100,0.,0.2);
- //new TH2F("h2217","P2 vs X EXM cut st. 2",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2217","P2 vs X EXM cut st. 2",30,3.0,183.0,100,0.,11.);
- new TH2F("h2218","P2 vs X EYM cut st. 2",30,3.0,183.0,100,0.,10.);
-
- // 1
- new TH2F("h2102","P2 vs X EPH2 st. 2",30,3.0,183.0,100,0.,0.0006);
- new TH2F("h2103","P2 vs X EAL2 st. 2",30,3.0,183.0,100,0.,0.005);
- //new TH2F("h2104","P2 vs X EXM2 st. 2",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2104","P2 vs X EXM2 st. 2",30,3.0,183.0,100,0.,7.);
- new TH2F("h2105","P2 vs X EYM2 st. 2",30,3.0,183.0,100,0.,7.);
-
- new TH2F("h2107","P vs X EPH2 st. 2",30,3.0,183.0,100,0.,0.0006);
- new TH2F("h2108","P vs X EAL2 st. 2",30,3.0,183.0,100,0.,0.005);
- //new TH2F("h2109","P vs X EXM2 st. 2",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2109","P vs X EXM2 st. 2",30,3.0,183.0,100,0.,7.);
- new TH2F("h2110","P vs X EYM2 st. 2",30,3.0,183.0,100,0.,7.);
-
- new TH2F("h2111","P vs X EPH cut st. 2",30,3.0,183.0,100,0.,0.1);
- new TH2F("h2112","P vs X EAL cut st. 2",30,3.0,183.0,100,0.,0.2);
- //new TH2F("h2113","P vs X EXM cut st. 2",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2113","P vs X EXM cut st. 2",30,3.0,183.0,100,0.,11.);
- new TH2F("h2114","P vs X EYM cut st. 2",30,3.0,183.0,100,0.,11.);
-
- new TH2F("h2115","P2 vs X EPH cut st. 2",30,3.0,183.0,100,0.,0.1);
- new TH2F("h2116","P2 vs X EAL cut st. 2",30,3.0,183.0,100,0.,0.2);
- //new TH2F("h2117","P2 vs X EXM cut st. 2",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2117","P2 vs X EXM cut st. 2",30,3.0,183.0,100,0.,11.);
- new TH2F("h2118","P2 vs X EYM cut st. 2",30,3.0,183.0,100,0.,11.);
-
- // 2,3,4,5
- new TH1F("h2701","P2 fit 2",30,3.0,183.0);
- new TH2F("h2702","P2 vs X EPH2 st. 1 fit 2",30,3.0,183.0,100,0.,0.0006);
- new TH2F("h2703","P2 vs X EAL2 st. 1 fit 2",30,3.0,183.0,100,0.,0.005);
- // new TH2F("h2704","P2 vs X EXM2 st. 1 fit 2",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2704","P2 vs X EXM2 st. 1 fit 2",30,3.0,183.0,100,0.,2.);
- new TH2F("h2705","P2 vs X EYM2 st. 1 fit 2",30,3.0,183.0,100,0.,3.);
-
- new TH2F("h2707","P vs X EPH2 st. 1 fit 2",30,3.0,183.0,100,0.,0.0006);
- new TH2F("h2708","P vs X EAL2 st. 1 fit 2",30,3.0,183.0,100,0.,0.005);
- //new TH2F("h2709","P vs X EXM2 st. 1 fit 2",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2709","P vs X EXM2 st. 1 fit 2",30,3.0,183.0,100,0.,2.);
- new TH2F("h2710","P vs X EYM2 st. 1 fit 2",30,3.0,183.0,100,0.,3.);
-
- new TH2F("h2711","P vs X EPH cut st. 1 fit 2",30,3.0,183.0,100,0.,0.07);
- new TH2F("h2712","P vs X EAL cut st. 1 fit 2",30,3.0,183.0,100,0.,0.2);
- //new TH2F("h2713","P vs X EXM cut st. 1 fit 2",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2713","P vs X EXM cut st. 1 fit 2",30,3.0,183.0,100,0.,6.);
- new TH2F("h2714","P vs X EYM cut st. 1 fit 2",30,3.0,183.0,100,0.,7.);
-
- new TH2F("h2715","P2 vs X EPH cut st. 1 fit 2",30,3.0,183.0,100,0.,0.07);
- new TH2F("h2716","P2 vs X EAL cut st. 1 fit 2",30,3.0,183.0,100,0.,0.2);
- //new TH2F("h2717","P2 vs X EXM cut st. 1 fit 2",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2717","P2 vs X EXM cut st. 1 fit 2",30,3.0,183.0,100,0.,6.);
- new TH2F("h2718","P2 vs X EYM cut st. 1 fit 2",30,3.0,183.0,100,0.,7.);
-
- // 1,3,4,5
- new TH1F("h2801","P2 fit 1",30,3.0,183.0);
- new TH2F("h2802","P2 vs X EPH2 st. 2 fit 1",30,3.0,183.0,100,0.,0.0006);
- new TH2F("h2803","P2 vs X EAL2 st. 2 fit 1",30,3.0,183.0,100,0.,0.005);
- //new TH2F("h2804","P2 vs X EXM2 st. 2 fit 1",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2804","P2 vs X EXM2 st. 2 fit 1",30,3.0,183.0,100,0.,2.);
- new TH2F("h2805","P2 vs X EYM2 st. 2 fit 1",30,3.0,183.0,100,0.,3.);
-
- new TH2F("h2807","P vs X EPH2 st. 2 fit 1",30,3.0,183.0,100,0.,0.0006);
- new TH2F("h2808","P vs X EAL2 st. 2 fit 1",30,3.0,183.0,100,0.,0.005);
- //new TH2F("h2809","P vs X EXM2 st. 2 fit 1",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2809","P vs X EXM2 st. 2 fit 1",30,3.0,183.0,100,0.,2.);
- new TH2F("h2810","P vs X EYM2 st. 2 fit 1",30,3.0,183.0,100,0.,3.);
-
- new TH2F("h2811","P vs X EPH cut st. 2 fit 1",30,3.0,183.0,100,0.,0.05);
- new TH2F("h2812","P vs X EAL cut st. 2 fit 1",30,3.0,183.0,100,0.,0.2);
- //new TH2F("h2813","P vs X EXM cut st. 2 fit 1",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2813","P vs X EXM cut st. 2 fit 1",30,3.0,183.0,100,0.,5.);
- new TH2F("h2814","P vs X EYM cut st. 2 fit 1",30,3.0,183.0,100,0.,7.);
-
- new TH2F("h2815","P2 vs X EPH cut st. 2 fit 1",30,3.0,183.0,100,0.,0.05);
- new TH2F("h2816","P2 vs X EAL cut st. 2 fit 1",30,3.0,183.0,100,0.,0.2);
- //new TH2F("h2817","P2 vs X EXM cut st. 2 fit 1",30,3.0,183.0,100,0.,1.5);
- new TH2F("h2817","P2 vs X EXM cut st. 2 fit 1",30,3.0,183.0,100,0.,5.);
- new TH2F("h2818","P2 vs X EYM cut st. 2 fit 1",30,3.0,183.0,100,0.,7.);
-
-
- new TH2F("h1111","dx vs x station 1",30,-250.,250.,30,-0.5,0.5);
- new TH2F("h1112","dx vs x station 2",30,-250.,250.,30,-0.5,0.5);
- new TH2F("h1113","dx vs x station 3",30,-250.,250.,30,-0.5,0.5);
- new TH2F("h1114","dx vs x station 4",30,-250.,250.,30,-0.5,0.5);
- new TH2F("h1115","dx vs x station 5",30,-250.,250.,30,-0.5,0.5);
- new TH2F("h1121","dy vs y station 1",30,-250.,250.,30,-0.04,0.04);
- new TH2F("h1122","dy vs y station 2",30,-250.,250.,30,-0.04,0.04);
- new TH2F("h1123","dy vs y station 3",30,-250.,250.,30,-0.04,0.04);
- new TH2F("h1124","dy vs y station 4",30,-250.,250.,30,-0.04,0.04);
- new TH2F("h1125","dy vs y station 5",30,-250.,250.,30,-0.04,0.04);
-
- // fin de test
-
- new TH1F("h500","Acceptance en H st. 4",500,0.,500.);
- new TH1F("h600","Acceptance en H st. 5",500,0.,500.);
- new TH1F("h700","X vertex track found",200,-10.,10.);
- new TH1F("h701","Y vertex track found",200,-10.,10.);
- new TH1F("h800","Rap. muon gen.",100,0.,5.);
- new TH1F("h801","Rap. muon gen. recons.",100,0.,5.);
- new TH1F("h802","Rap. muon gen. ghost ",100,0.,5.);
- new TH1F("h900","Pt muon gen.",100,0.,20.);
- new TH1F("h901","Pt muon gen. recons.",100,0.,20.);
- new TH1F("h902","Pt muon gen. ghost",100,0.,20.);
- new TH1F("h910","phi muon gen.",100,-10.,10.);
- new TH1F("h911","phi muon gen. recons.",100,-10.,10.);
- new TH1F("h912","phi muon gen. ghost",100,-10.,10.);
- new TH2F("h1001","Y VS X hit st. 1",300,-300.,300.,300,-300.,300.);
- new TH2F("h1002","Y VS X hit st. 2",300,-300.,300.,300,-300.,300.);
- new TH2F("h1003","Y VS X hit st. 3",300,-300.,300.,300,-300.,300.);
- new TH2F("h1004","Y VS X hit st. 4",300,-300.,300.,300,-300.,300.);
- new TH2F("h1005","Y VS X hit st. 5",300,-300.,300.,300,-300.,300.);
- // Histos variance dans 4
- new TH2F("h11","VAR X st. 4",30,3.0,183.0,100,0.,2.);
- new TH2F("h12","VAR Y st. 4",30,3.0,183.0,100,0.,600.);
- new TH2F("h13","VAR PHI st. 4",30,3.0,183.0,100,0.,0.0001);
- new TH2F("h14","VAR ALM st. 4",30,3.0,183.0,100,0.,0.05);
- new TH1F("h15","P",30,3.0,183.0);
- new TH1F("h411","VAR X st. 4",100,-1.42,1.42);
- new TH1F("h412","VAR Y st. 4",100,-25.,25.);
- new TH1F("h413","VAR PHI st. 4",100,-0.01,0.01);
- new TH1F("h414","VAR ALM st. 4",100,-0.23,0.23);
- // histo2
- new TH2F("h211","histo2-VAR X st. 4",30,3.0,183.0,100,0.,2.);
- new TH2F("h212","histo2-VAR Y st. 4",30,3.0,183.0,100,0.,600.);
- new TH1F("h213","histo2-VAR X st. 4",100,-1.42,1.42);
- new TH1F("h214","histo2-VAR Y st. 4",100,-25.,25.);
- new TH1F("h215","histo2-P",30,3.0,183.0);
-
- // Histos variance dans 2
- new TH2F("h21","VAR X st. 2",30,3.0,183.0,100,0.,3.);
- new TH2F("h22","VAR Y st. 2",30,3.0,183.0,100,0.,7.);
- new TH2F("h23","VAR PHI st. 2",30,3.0,183.0,100,0.,0.006);
- new TH2F("h24","VAR ALM st. 2",30,3.0,183.0,100,0.,0.005);
- new TH1F("h25","P",30,3.0,183.0);
- new TH1F("h421","VAR X st. 2",100,-1.72,1.72);
- new TH1F("h422","VAR Y st. 2",100,-2.7,2.7);
- new TH1F("h423","VAR PHI st. 2",100,-0.08,0.08);
- new TH1F("h424","VAR ALM st. 2",100,-0.072,0.072);
- // histo2
- new TH2F("h221","histo2-VAR X st. 2",30,3.0,183.0,100,0.,3.);
- new TH2F("h222","histo2-VAR Y st. 2",30,3.0,183.0,100,0.,7.);
- new TH1F("h223","histo2-VAR X st. 2",100,-1.72,1.72);
- new TH1F("h224","histo2-VAR Y st. 2",100,-2.7,2.7);
- new TH1F("h225","histo2-P",30,3.0,183.0);
-
- // Histos variance dans 1
- new TH2F("h31","VAR X st. 1",30,3.0,183.0,100,0.,2.);
- new TH2F("h32","VAR Y st. 1",30,3.0,183.0,100,0.,0.5);
- new TH2F("h33","VAR PHI st. 1",30,3.0,183.0,100,0.,0.006);
- new TH2F("h34","VAR ALM st. 1",30,3.0,183.0,100,0.,0.005);
- new TH1F("h35","P",30,3.0,183.0);
- new TH1F("h431","VAR X st. 1",100,-1.42,1.42);
- new TH1F("h432","VAR Y st. 1",100,-0.72,0.72);
- new TH1F("h433","VAR PHI st. 1",100,-0.08,0.08);
- new TH1F("h434","VAR ALM st. 1",100,-0.072,0.072);
- // Histos variance dans 1
- new TH2F("h41","VAR X st. 1 fit 5,4,3,2,V",30,3.0,183.0,100,0.,4.);
- new TH2F("h42","VAR Y st. 1 fit 5,4,3,2,V",30,3.0,183.0,100,0.,20.);
- new TH2F("h43","VAR PHI st. 1 fit 5,4,3,2,V",30,3.0,183.0,100,0.,0.005);
- new TH2F("h44","VAR ALM st. 1 fit 5,4,3,2,V",30,3.0,183.0,100,0.,0.005);
- new TH1F("h45","P",30,3.0,183.0);
- new TH1F("h441","VAR X st. 1 fit 5,4,3,2,V",100,-2.,2.);
- new TH1F("h442","VAR Y st. 1 fit 5,4,3,2,V",100,-4.5,4.5);
- new TH1F("h443","VAR PHI st. 1 fit 5,4,3,2,V",100,-0.072,0.072);
- new TH1F("h444","VAR ALM st. 1 fit 5,4,3,2,V",100,-0.072,0.072);
- // histo2
- new TH2F("h241","histo2-VAR X st. 1 fit 5,4,3,2,V",30,3.0,183.0,100,0.,4.);
- new TH2F("h242","histo2-VAR Y st. 1 fit 5,4,3,2,V",30,3.0,183.0,100,0.,20.);
- new TH1F("h243","histo2-VAR X st. 1 fit 5,4,3,2,V",100,-2.,2.);
- new TH1F("h244","histo2-VAR Y st. 1 fit 5,4,3,2,V",100,-4.5,4.5);
- new TH1F("h245","histo2-P",30,3.0,183.0);
-
- // Histos variance dans 2
- new TH2F("h51","VAR X st. 2 fit 5,4,3,1,V",30,3.0,183.0,100,0.,0.5);
- new TH2F("h52","VAR Y st. 2 fit 5,4,3,1,V",30,3.0,183.0,100,0.,2.);
- new TH2F("h53","VAR PHI st. 2 fit 5,4,3,1,V",30,3.0,183.0,100,0.,0.005);
- new TH2F("h54","VAR ALM st. 2 fit 5,4,3,1,V",30,3.0,183.0,100,0.,0.01);
- new TH1F("h55","P",30,3.0,183.0);
- new TH1F("h451","VAR X st. 2 fit 5,4,3,1,V",100,-0.72,0.72);
- new TH1F("h452","VAR Y st. 2 fit 5,4,3,1,V",100,-1.42,1.42);
- new TH1F("h453","VAR PHI st. 2 fit 5,4,3,1,V",100,-0.072,0.072);
- new TH1F("h454","VAR ALM st. 2 fit 5,4,3,1,V",100,-0.1,0.1);
- new TH1F("h999","PTOT",30,3.0,183.0);
- // histo2
- new TH2F("h251","histo2-VAR X st. 2 fit 5,4,3,1,V",30,3.0,183.0,100,0.,0.5);
- new TH2F("h252","histo2-VAR Y st. 2 fit 5,4,3,1,V",30,3.0,183.0,100,0.,2.);
- new TH1F("h253","histo2-VAR X st. 2 fit 5,4,3,1,V",100,-0.72,0.72);
- new TH1F("h254","histo2-VAR Y st. 2 fit 5,4,3,1,V",100,-1.42,1.42);
- new TH1F("h255","histo2-P",30,3.0,183.0);
- // Histos variance dans 3
- new TH2F("h61","VAR X st. 3 fit 4,5,V",30,3.0,183.0,100,0.,5.);
- new TH2F("h62","VAR Y st. 3 fit 4,5,V",30,3.0,183.0,100,0.,2.);
- new TH2F("h63","VAR PHI st. 3 fit 4,5,V",30,3.0,183.0,100,0.,0.0006);
- new TH2F("h64","VAR ALM st. 3 fit 4,5,V",30,3.0,183.0,100,0.,0.0006);
- new TH1F("h65","P",30,3.0,183.0);
- new TH1F("h461","VAR X st. 3 fit 4,5,V",100,-2.25,2.25);
- new TH1F("h462","VAR Y st. 3 fit 4,5,V",100,-1.42,1.42);
- new TH1F("h463","VAR PHI st. 3 fit 4,5,V",100,-0.024,0.024);
- new TH1F("h464","VAR ALM st. 3 fit 4,5,V",100,-0.024,0.024);
- // histo2
- new TH2F("h261","histo2-VAR X st. 3 fit 4,5,V",30,3.0,183.0,100,0.,5.);
- new TH2F("h262","histo2-VAR Y st. 3 fit 4,5,V",30,3.0,183.0,100,0.,2.);
- new TH1F("h263","histo2-VAR X st. 3 fit 4,5,V",100,-2.25,2.25);
- new TH1F("h264","histo2-VAR Y st. 3 fit 4,5,V",100,-1.42,1.42);
- new TH1F("h265","Phisto2-",30,3.0,183.0);
- // Histos dx,dy distribution between chambers inside stations
- new TH1F("h71","DX in st. ID-70",100,-5.,5.);
- new TH1F("h81","DY in st. ID-80",100,-5.,5.);
- new TH1F("h72","DX in st. ID-70",100,-5.,5.);
- new TH1F("h82","DY in st. ID-80",100,-5.,5.);
- new TH1F("h73","DX in st. ID-70",100,-5.,5.);
- new TH1F("h83","DY in st. ID-80",100,-5.,5.);
- new TH1F("h74","DX in st. ID-70",100,-5.,5.);
- new TH1F("h84","DY in st. ID-80",100,-5.,5.);
- new TH1F("h75","DX in st. ID-70",100,-5.,5.);
- new TH1F("h85","DY in st. ID-80",100,-5.,5.);
+ /// Compute the vertex resolution square from natural vertex dispersion and
+ /// multiple scattering effets according to trackCandidate path in absorber
+ /// It is necessary to account for multiple scattering effects here instead of during the fit of
+ /// the "trackCandidate" to do not influence the result by changing track resolution at vertex
+ AliDebug(1,"Enter SetVertexForFit");
+
+ Double_t nonBendingReso2 = GetRecoParam()->GetNonBendingVertexDispersion() *
+ GetRecoParam()->GetNonBendingVertexDispersion();
+ Double_t bendingReso2 = GetRecoParam()->GetBendingVertexDispersion() *
+ GetRecoParam()->GetBendingVertexDispersion();
+
+ // add multiple scattering effets
+ AliMUONTrackParam paramAtVertex(*((AliMUONTrackParam*)(trackCandidate.GetTrackParamAtCluster()->First())));
+ paramAtVertex.DeleteCovariances(); // to be sure to account only for multiple scattering
+ if (!AliMUONTrackExtrap::ExtrapToZ(¶mAtVertex,AliMUONConstants::AbsZEnd())) {
+ nonBendingReso2 = 0.;
+ bendingReso2 = 0.;
+ } else {
+ AliMUONTrackExtrap::ExtrapToVertexUncorrected(¶mAtVertex,0.);
+ const TMatrixD& kParamCov = paramAtVertex.GetCovariances();
+ nonBendingReso2 += kParamCov(0,0);
+ bendingReso2 += kParamCov(2,2);
+ }
+
+ // Set the vertex resolution square
+ trackCandidate.SetVertexErrXY2(nonBendingReso2,bendingReso2);
}
-//_____________________________________________________________________________
-void chfnt(Int_t &ievr, Int_t &ntrackr, Int_t *istatr, Int_t *isignr, Float_t *pxr, Float_t *pyr, Float_t *pzr, Float_t *zvr, Float_t *chi2r, Float_t *pxv, Float_t *pyv, Float_t *pzv)
+ //__________________________________________________________________________
+void AliMUONTrackReconstructor::Fit(AliMUONTrack &track, Bool_t includeMCS, Bool_t fitWithVertex, Bool_t calcCov)
{
- //
- // fill the ntuple
- NtupleSt.ievr = ievr;
- NtupleSt.ntrackr = ntrackr;
- for (Int_t i=0; i<500; i++) {
- NtupleSt.istatr[i] = istatr[i];
- NtupleSt.isignr[i] = isignr[i];
- NtupleSt.pxr[i] = pxr[i];
- NtupleSt.pyr[i] = pyr[i];
- NtupleSt.pzr[i] = pzr[i];
- NtupleSt.zvr[i] = zvr[i];
- NtupleSt.chi2r[i] = chi2r[i];
- NtupleSt.pxv[i] = pxv[i];
- NtupleSt.pyv[i] = pyv[i];
- NtupleSt.pzv[i] = pzv[i];
+ /// Fit the track
+ /// w/wo multiple Coulomb scattering according to "includeMCS".
+ /// w/wo constraining the vertex according to "fitWithVertex".
+ /// calculating or not the covariance matrix according to "calcCov".
+ AliDebug(1,"Enter Fit");
+
+ Double_t benC, errorParam, invBenP, nonBenC, x, y;
+ AliMUONTrackParam *trackParam;
+ Double_t arg[1], fedm, errdef, globalChi2;
+ Int_t npari, nparx;
+ Int_t status, covStatus;
+
+ // Instantiate gMinuit if not already done
+ if (!gMinuit) gMinuit = new TMinuit(6);
+ // Clear MINUIT parameters
+ gMinuit->mncler();
+ // Give the fitted track to MINUIT
+ gMinuit->SetObjectFit(&track);
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 2) || (AliLog::GetGlobalDebugLevel() >= 2)) {
+ // Define print level
+ arg[0] = 1;
+ gMinuit->mnexcm("SET PRI", arg, 1, status);
+ // Print covariance matrix
+ gMinuit->mnexcm("SHO COV", arg, 0, status);
+ } else {
+ arg[0] = -1;
+ gMinuit->mnexcm("SET PRI", arg, 1, status);
+ }
+ // No warnings
+ gMinuit->mnexcm("SET NOW", arg, 0, status);
+ // Define strategy
+ //arg[0] = 2;
+ //gMinuit->mnexcm("SET STR", arg, 1, status);
+
+ // set flag w/wo multiple scattering according to "includeMCS"
+ track.FitWithMCS(includeMCS);
+ if (includeMCS) {
+ // compute cluster weights only once
+ if (!track.UpdateTrackParamAtCluster() || !track.ComputeClusterWeights()) {
+ AliWarning("cannot take into account the multiple scattering effects");
+ track.FitWithMCS(kFALSE);
}
- gAliNtupleGlobal->Fill();
+ }
+
+ track.FitWithVertex(fitWithVertex);
+ if (fitWithVertex) SetVertexErrXY2ForFit(track);
+
+ // Set fitting function
+ gMinuit->SetFCN(TrackChi2);
+
+ // Set fitted parameters (!! The order is very important for the covariance matrix !!)
+ // Mandatory limits to avoid NaN values of parameters
+ trackParam = (AliMUONTrackParam*) (track.GetTrackParamAtCluster()->First());
+ Double_t maxIBM = 1. / GetRecoParam()->GetMinBendingMomentum();
+ gMinuit->mnparm(0, "X", trackParam->GetNonBendingCoor(), 0.03, -500.0, 500.0, status);
+ gMinuit->mnparm(1, "NonBenS", trackParam->GetNonBendingSlope(), 0.001, -1., 1., status);
+ gMinuit->mnparm(2, "Y", trackParam->GetBendingCoor(), 0.10, -500.0, 500.0, status);
+ gMinuit->mnparm(3, "BenS", trackParam->GetBendingSlope(), 0.001, -1.5, 1.5, status);
+ gMinuit->mnparm(4, "InvBenP", trackParam->GetInverseBendingMomentum(), 0.003, -maxIBM, maxIBM, status);
+
+ // minimization
+ gMinuit->mnexcm("MIGRAD", arg, 0, status);
+
+ // Calculate the covariance matrix more accurately if required
+ if (calcCov) gMinuit->mnexcm("HESSE", arg, 0, status);
+
+ // get results into "invBenP", "benC", "nonBenC" ("x", "y")
+ gMinuit->GetParameter(0, x, errorParam);
+ trackParam->SetNonBendingCoor(x);
+ gMinuit->GetParameter(1, nonBenC, errorParam);
+ trackParam->SetNonBendingSlope(nonBenC);
+ gMinuit->GetParameter(2, y, errorParam);
+ trackParam->SetBendingCoor(y);
+ gMinuit->GetParameter(3, benC, errorParam);
+ trackParam->SetBendingSlope(benC);
+ gMinuit->GetParameter(4, invBenP, errorParam);
+ trackParam->SetInverseBendingMomentum(invBenP);
+
+ // global result of the fit
+ gMinuit->mnstat(globalChi2, fedm, errdef, npari, nparx, covStatus);
+ track.SetGlobalChi2(globalChi2);
+
+ // Get the covariance matrix if required
+ if (calcCov) {
+ // Covariance matrix according to HESSE status
+ // If problem then keep only the diagonal terms (variances)
+ Double_t matrix[5][5];
+ for (Int_t i=0; i<5; i++) for (Int_t j=0; j<5; j++) matrix[i][j] = 0.;
+ gMinuit->mnemat(&matrix[0][0],5);
+ if (covStatus == 3) trackParam->SetCovariances(matrix);
+ else trackParam->SetVariances(matrix);
+ } else trackParam->DeleteCovariances();
+
}
-//________________
-void hist_closed()
+ //__________________________________________________________________________
+void TrackChi2(Int_t & /*nParam*/, Double_t * /*gradient*/, Double_t &chi2, Double_t *param, Int_t /*flag*/)
{
- //
- // write histos and ntuple to "reconst.root" file
- gAliFileGlobal->Write();
+ /// Return the "Chi2" to be minimized with Minuit for track fitting.
+ /// Assumes that the trackParamAtCluster are sorted according to increasing Z.
+ /// Track parameters at each cluster are updated accordingly.
+ /// Vertex is used according to the flag "trackBeingFitted->GetFitWithVertex()".
+ /// Multiple Coulomb scattering is taken into account according to the flag "trackBeingFitted->GetFitWithMCS()".
+
+ AliMUONTrack *trackBeingFitted = (AliMUONTrack*) gMinuit->GetObjectFit();
+ AliMUONTrackParam* trackParamAtCluster = (AliMUONTrackParam*) trackBeingFitted->GetTrackParamAtCluster()->First();
+ Double_t dX, dY;
+ chi2 = 0.; // initialize chi2
+
+ // update track parameters
+ trackParamAtCluster->SetNonBendingCoor(param[0]);
+ trackParamAtCluster->SetNonBendingSlope(param[1]);
+ trackParamAtCluster->SetBendingCoor(param[2]);
+ trackParamAtCluster->SetBendingSlope(param[3]);
+ trackParamAtCluster->SetInverseBendingMomentum(param[4]);
+ if (!trackBeingFitted->UpdateTrackParamAtCluster()) {
+ chi2 = 2.*AliMUONTrack::MaxChi2();
+ return;
+ }
+
+ // Take the vertex into account in the fit if required
+ if (trackBeingFitted->FitWithVertex()) {
+ Double_t nonBendingReso2,bendingReso2;
+ trackBeingFitted->GetVertexErrXY2(nonBendingReso2,bendingReso2);
+ AliMUONTrackParam paramAtVertex(*trackParamAtCluster);
+ if (nonBendingReso2 != 0. && bendingReso2 != 0. && AliMUONTrackExtrap::ExtrapToZ(¶mAtVertex, 0.)) { // vextex position = (0,0,0)
+ dX = paramAtVertex.GetNonBendingCoor();
+ dY = paramAtVertex.GetBendingCoor();
+ chi2 += dX * dX / nonBendingReso2 + dY * dY / bendingReso2;
+ } else {
+ chi2 = 2.*AliMUONTrack::MaxChi2();
+ return;
+ }
+ }
+
+ // compute chi2 w/wo multiple scattering
+ chi2 += trackBeingFitted->ComputeGlobalChi2(trackBeingFitted->FitWithMCS());
+
}
-//________________________________________________________________________
-void trackf_read_fit(Int_t &ievr, Int_t &nev, Int_t &nhittot1, Int_t *izch, Double_t *xgeant, Double_t *ygeant)
+ //__________________________________________________________________________
+Bool_t AliMUONTrackReconstructor::ComplementTracks(const AliMUONVClusterStore& clusterStore)
{
-
- // introduce aliroot variables in fortran common
- // tracking study from geant hits
- //
-
- AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON");
- TTree *treeH = gAlice->TreeH();
- Int_t ntracks = (Int_t)treeH->GetEntries();
- cout<<"ntrack="<<ntracks<<endl;
-
- nhittot1 = 0;
-
-// Loop over tracks
- for (Int_t track=0; track<ntracks;track++) {
- gAlice->ResetHits();
- treeH->GetEvent(track);
+ /// Complete tracks by adding missing clusters (if there is an overlap between
+ /// two detection elements, the track may have two clusters in the same chamber).
+ /// Re-fit track parameters and covariances.
+ /// Return kTRUE if one or more tracks have been complemented.
+ AliDebug(1,"Enter ComplementTracks");
+
+ Int_t chamberId, detElemId;
+ Double_t chi2OfCluster, bestChi2OfCluster;
+ Double_t sigmaCut2 = GetRecoParam()->GetSigmaCutForTracking() *
+ GetRecoParam()->GetSigmaCutForTracking();
+ Bool_t foundOneCluster, trackModified, hasChanged = kFALSE;
+ AliMUONVCluster* cluster;
+ AliMUONTrackParam *trackParam, *nextTrackParam, copyOfTrackParam, trackParamAtCluster, bestTrackParamAtCluster;
+
+ AliMUONTrack *track = (AliMUONTrack*) fRecTracksPtr->First();
+ while (track) {
+ trackModified = kFALSE;
+
+ trackParam = (AliMUONTrackParam*)track->GetTrackParamAtCluster()->First();
+ while (trackParam) {
+ foundOneCluster = kFALSE;
+ bestChi2OfCluster = 2. * sigmaCut2; // 2 because 2 quantities in chi2
+ chamberId = trackParam->GetClusterPtr()->GetChamberId();
+ detElemId = trackParam->GetClusterPtr()->GetDetElemId();
- if (pMUON) {
-
-// Loop over hits
- for(AliMUONHit* mHit=(AliMUONHit*)pMUON->FirstHit(-1);
- mHit;
- mHit=(AliMUONHit*)pMUON->NextHit())
- {
-<<<<<<< AliMUONTrackReconstructor.cxx
- if (mHit->Chamber() > 10) continue;
-=======
- if (mHit->fChamber > 10) continue;
->>>>>>> 1.6
- Int_t ftrack = mHit->Track();
- Int_t id = gAlice->Particle(ftrack)->GetPdgCode();
-
- if (id==kMuonPlus||id==kMuonMinus) {
- xgeant[nhittot1] = mHit->Y();
- ygeant[nhittot1] = mHit->X();
- izch[nhittot1] = mHit->Chamber();
-// printf("id %d ch %d x %f y %f\n",id,izch[nhittot1],xgeant[nhittot1],ygeant[nhittot1]);
- nhittot1++;
- }
- } // hit loop
- } // if pMUON
- } // track loop
-
- ievr=nev;
- gAliFileGlobal->cd();
+ // prepare nextTrackParam before adding new cluster because of the sorting
+ nextTrackParam = (AliMUONTrackParam*)track->GetTrackParamAtCluster()->After(trackParam);
+
+ // recover track parameters from local fit and put them into a copy of trackParam
+ copyOfTrackParam.SetZ(trackParam->GetZ());
+ copyOfTrackParam.SetParameters(trackParam->GetSmoothParameters());
+ copyOfTrackParam.SetCovariances(trackParam->GetSmoothCovariances());
+
+ // Create iterators to loop over clusters in current chamber
+ TIter nextInCh(clusterStore.CreateChamberIterator(chamberId,chamberId));
+
+ // look for one second candidate in the same chamber
+ while ( ( cluster = static_cast<AliMUONVCluster*>(nextInCh()) ) ) {
+
+ // look for a cluster in another detection element
+ if (cluster->GetDetElemId() == detElemId) continue;
+
+ // try to add the current cluster fast
+ if (!TryOneClusterFast(copyOfTrackParam, cluster)) continue;
+
+ // try to add the current cluster accurately
+ chi2OfCluster = TryOneCluster(copyOfTrackParam, cluster, trackParamAtCluster);
+
+ // if better chi2 then prepare to add this cluster to the track
+ if (chi2OfCluster < bestChi2OfCluster) {
+ bestChi2OfCluster = chi2OfCluster;
+ bestTrackParamAtCluster = trackParamAtCluster;
+ foundOneCluster = kTRUE;
+ }
+
+ }
+
+ // add new cluster if any
+ if (foundOneCluster) {
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "ComplementTracks: found one cluster in chamber(1..): " << chamberId+1 << endl;
+ bestTrackParamAtCluster.GetClusterPtr()->Print();
+ cout<<endl<<"Track parameters and covariances at cluster:"<<endl;
+ bestTrackParamAtCluster.GetParameters().Print();
+ bestTrackParamAtCluster.GetCovariances().Print();
+ }
+
+ trackParam->SetRemovable(kTRUE);
+ bestTrackParamAtCluster.SetRemovable(kTRUE);
+ track->AddTrackParamAtCluster(bestTrackParamAtCluster,*(bestTrackParamAtCluster.GetClusterPtr()));
+ trackModified = kTRUE;
+ hasChanged = kTRUE;
+ }
+
+ trackParam = nextTrackParam;
+ }
+
+ // re-fit track parameters if needed
+ if (trackModified) Fit(*track, kTRUE, kFALSE, kTRUE);
+
+ track = (AliMUONTrack*) fRecTracksPtr->After(track);
+ }
+
+ return hasChanged;
+
}
-//______________________________________________________________________________
-void trackf_read_geant(Int_t *itypg, Double_t *xtrg, Double_t *ytrg, Double_t *ptotg, Int_t *idg, Int_t *izch, Double_t *pvert1g, Double_t *pvert2g, Double_t *pvert3g, Double_t *zvertg, Int_t &nhittot1, Double_t *cx, Double_t *cy, Double_t *cz, Int_t &ievr,Int_t &nev,Double_t *xgeant, Double_t *ygeant, Double_t *clsize1, Double_t *clsize2)
+ //__________________________________________________________________________
+void AliMUONTrackReconstructor::ImproveTrack(AliMUONTrack &track)
{
- //
- // introduce aliroot variables in fortran common
- // tracking study from geant hits
- //
-
- AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON");
+ /// Improve the given track by removing clusters with local chi2 highter than the defined cut
+ /// Recompute track parameters and covariances at the remaining clusters
+ AliDebug(1,"Enter ImproveTrack");
- // TTree *treeK = gAlice->TreeK();
- TTree *treeH = gAlice->TreeH();
- Int_t ntracks = (Int_t)treeH->GetEntries();
- cout<<"ntrack="<<ntracks<<endl;
-
- Int_t maxidg = 0;
- Int_t nres=0;
+ Double_t localChi2, worstLocalChi2;
+ AliMUONTrackParam *trackParamAtCluster, *worstTrackParamAtCluster;
+ Double_t sigmaCut2 = GetRecoParam()->GetSigmaCutForImprovement() *
+ GetRecoParam()->GetSigmaCutForImprovement();
-//
-// Loop over tracks
-//
-
- for (Int_t track=0; track<ntracks;track++) {
- gAlice->ResetHits();
- treeH->GetEvent(track);
+ while (!track.IsImproved()) {
+
+ // identify removable clusters
+ track.TagRemovableClusters(GetRecoParam()->RequestedStationMask());
+
+ // Update track parameters and covariances
+ if (!track.UpdateCovTrackParamAtCluster()) {
+ AliWarning("unable to update track parameters and covariances --> stop improvement");
+ break;
+ }
+
+ // Compute local chi2 of each clusters
+ track.ComputeLocalChi2(kTRUE);
+
+ // Look for the cluster to remove
+ worstTrackParamAtCluster = NULL;
+ worstLocalChi2 = 0.;
+ trackParamAtCluster = (AliMUONTrackParam*) track.GetTrackParamAtCluster()->First();
+ while (trackParamAtCluster) {
- if (pMUON) {
-//
-// Loop over hits
-//
- for(AliMUONHit* mHit=(AliMUONHit*)pMUON->FirstHit(-1);
- mHit;
- mHit=(AliMUONHit*)pMUON->NextHit())
- {
- if (maxidg<=20000) {
-
-<<<<<<< AliMUONTrackReconstructor.cxx
- if (mHit->Chamber() > 10) continue;
-=======
- if (mHit->fChamber > 10) continue;
->>>>>>> 1.6
- TParticle *particle;
- Int_t ftrack = mHit->Track();
- Int_t id = gAlice->Particle(ftrack)->GetPdgCode();
-
-// if (id==kMuonPlus||id==kMuonMinus) {
-
- // inversion de x et y car le champ est inverse dans le programme tracking
- xtrg[maxidg] = 0;
- ytrg[maxidg] = 0;
- xgeant[maxidg] = mHit->Y(); // x-pos of hit
- ygeant[maxidg] = mHit->X(); // y-pos of hit
- clsize1[maxidg] = 0; // cluster size on 1-st cathode
- clsize2[maxidg] = 0; // cluster size on 2-nd cathode
- cx[maxidg] = mHit->Cy(); // Px/P of hit
- cy[maxidg] = mHit->Cx(); // Py/P of hit
- cz[maxidg] = mHit->Cz(); // Pz/P of hit
- izch[maxidg] = mHit->Chamber();
- /*
- Int_t pdgtype = Int_t(mHit->fParticle); // particle number
- itypg[maxidg] = gMC->IdFromPDG(pdgtype);
- */
- itypg[maxidg] = 0;
- if (id==kMuonPlus) itypg[maxidg] = 5;
- if (id==kMuonMinus) itypg[maxidg] = 6;
-
- //printf("ich, itypg[maxidg] %d %d\n",izch[maxidg],itypg[maxidg]);
-
- ptotg[maxidg] = mHit->Momentum(); // P of hit
-
- particle = gAlice->Particle(ftrack);
- Float_t thet = particle->Theta();
- thet = thet*180./3.1416;
-
- //cout<<"chambre "<<izch[maxidg]<<" ptot="<<ptotg[maxidg]<<" theta="<<thet<<" phi="<<mHit->fPhi<<" z="<<zz<<endl;
-
- Int_t iparent = particle->GetFirstMother();
- if (iparent >= 0) {
- Int_t ip;
- while(1) {
- ip=gAlice->Particle(iparent)->GetFirstMother();
- if (ip < 0) {
- break;
- } else {
- iparent = ip;
- }
- }
- }
- //printf("iparent - %d\n",iparent);
- Int_t id1 = ftrack; // numero de la particule generee au vertex
- Int_t idum = track+1;
- Int_t id2 = gAlice->Particle(iparent)->GetPdgCode();
-
- if (id2==443) id2=114;
- else id2=116;
-
- if (id2==116) {
- nres++;
- }
- //printf("id2 %d\n",id2);
- idg[maxidg] = 30000*id1+10000*idum+id2;
-
- pvert1g[maxidg] = particle->Py(); // Px vertex
- pvert2g[maxidg] = particle->Px(); // Py vertex
- pvert3g[maxidg] = particle->Pz(); // Pz vertex
- zvertg[maxidg] = particle->Vz(); // z vertex
-
- // cout<<"x="<<xgeant[maxidg]<<endl;
- //cout<<"y="<<ygeant[maxidg]<<endl;
- //cout<<"typ="<<itypg[maxidg]<<endl;
-
- maxidg ++;
-
- }
- }
- } // hit loop
-// } // if pMUON
- } // track loop first file
-
- if (gAliTrH1 && gAliHits2 ) { // if background file
- ntracks =(Int_t)gAliTrH1->GetEntries();
- printf("Trackf_read - 2-nd file - ntracks %d\n",ntracks);
-
- // Loop over tracks
- for (Int_t track=0; track<ntracks; track++) {
+ // Pick up cluster with the worst chi2
+ localChi2 = trackParamAtCluster->GetLocalChi2();
+ if (localChi2 > worstLocalChi2) {
+ worstLocalChi2 = localChi2;
+ worstTrackParamAtCluster = trackParamAtCluster;
+ }
- if (gAliHits2) gAliHits2->Clear();
- gAliTrH1->GetEvent(track);
-
- // Loop over hits
- AliMUONHit *mHit;
- for (int i=0;i<gAliHits2->GetEntriesFast();i++)
- {
- mHit=(AliMUONHit*) (*gAliHits2)[i];
- if (mHit->Chamber() > 10) continue;
- if (maxidg<=20000) {
-
- // inversion de x et y car le champ est inverse dans le programme tracking !!!!
- xtrg[maxidg] = 0; // only for reconstructed point
- ytrg[maxidg] = 0; // only for reconstructed point
- xgeant[maxidg] = mHit->Y(); // x-pos of hit
- ygeant[maxidg] = mHit->X(); // y-pos of hit
- clsize1[maxidg] = 0; // cluster size on 1-st cathode
- clsize2[maxidg] = 0; // cluster size on 2-nd cathode
- cx[maxidg] = mHit->Cy(); // Px/P of hit
- cy[maxidg] = mHit->Cx(); // Py/P of hit
- cz[maxidg] = mHit->Cz(); // Pz/P of hit
- izch[maxidg] = mHit->Chamber(); // chamber number
- ptotg[maxidg] = mHit->Momentum(); // P of hit
-
- Int_t ftrack = mHit->Track();
- Int_t id1 = ftrack; // track number
- Int_t idum = track+1;
-
- TClonesArray *fPartArray = gAliParticles2;
-// TParticle *Part=NULL;
- Int_t id = ((TParticle*) fPartArray->UncheckedAt(ftrack))->GetPdgCode();
- if (id==kMuonPlus||id==kMuonMinus) {
- if (id==kMuonPlus) itypg[maxidg] = 5;
- else itypg[maxidg] = 6;
- } else itypg[maxidg]=0;
-
- Int_t id2=0; // set parent to 0 for background !!
- idg[maxidg] = 30000*id1+10000*idum+id2;
-
-
- pvert1g[maxidg] = 0; // Px vertex
- pvert2g[maxidg] = 0; // Py vertex
- pvert3g[maxidg] = 0; // Pz vertex
- zvertg[maxidg] = 0; // z vertex
- maxidg ++;
-
- } // check limits (maxidg)
- } // hit loop
- } // track loop
- } // if gAliTrH1
-
- ievr = nev;
- nhittot1 = maxidg ;
- cout<<"nhittot1="<<nhittot1<<endl;
-
- static Int_t nbres=0;
- if (nres>=19) nbres++;
- printf("nres, nbres %d %d \n",nres,nbres);
-
- gAliFileGlobal->cd();
-
-}
-
-//________________________________________________________________________
-void trackf_read_spoint(Int_t *itypg, Double_t *xtrg, Double_t *ytrg, Double_t *ptotg, Int_t *idg, Int_t *izch, Double_t *pvert1g, Double_t *pvert2g, Double_t *pvert3g, Double_t *zvertg, Int_t &nhittot1, Double_t *cx, Double_t *cy, Double_t *cz, Int_t &ievr,Int_t &nev,Double_t *xgeant, Double_t *ygeant,Double_t *clsize1, Double_t *clsize2)
-
-{
- //
- // introduce aliroot variables in fortran common
- // tracking study from reconstructed points
- //
- AliMUON *pMUON = (AliMUON*) gAlice->GetModule("MUON");
+ trackParamAtCluster = (AliMUONTrackParam*) track.GetTrackParamAtCluster()->After(trackParamAtCluster);
+ }
+
+ // Check if worst cluster found
+ if (!worstTrackParamAtCluster) {
+ AliWarning("Bad local chi2 values?");
+ break;
+ }
- cout<<"numero de l'evenement "<<nev<<endl;
+ // Check whether the worst chi2 is under requirement or not
+ if (worstLocalChi2 < 2. * sigmaCut2) { // 2 because 2 quantities in chi2
+ track.SetImproved(kTRUE);
+ break;
+ }
- TTree *treeR = gAlice->TreeR();
- Int_t nent=(Int_t)treeR->GetEntries();
- if (nev < 10)
- printf("Found %d entries in the tree (must be one per cathode per event! + 1empty)\n",
- nent);
-//
+ // if the worst cluster is not removable then stop improvement
+ if (!worstTrackParamAtCluster->IsRemovable()) break;
- Int_t mult1, mult2;
+ // Remove the worst cluster
+ track.RemoveTrackParamAtCluster(worstTrackParamAtCluster);
- if (pMUON) {
- Int_t mpoi=0;
- for (Int_t ich=0;ich<10;ich++) {
- printf("chambre %d\n",ich+1);
- TClonesArray *reconstPoints = pMUON->RawClustAddress(ich);
-
- pMUON->ResetRawClusters();
- treeR->GetEvent(nent-1);
- Int_t npoints = (Int_t) reconstPoints->GetEntries();
- if (!npoints) continue;
- printf("\n ch %d npoints = %d\n",ich+1,npoints);
- // Loop over reconstruted points
- for (Int_t ipoi=0; ipoi<npoints; ipoi++) {
- printf(" point %d\n",ipoi);
- AliMUONRawCluster* point =
- (AliMUONRawCluster*) reconstPoints->UncheckedAt(ipoi);
-
- mult1=point->fMultiplicity[0];
- mult2=point->fMultiplicity[1];
- xtrg[mpoi]=(Double_t) point->fY[0];
- ytrg[mpoi]=(Double_t) point->fX[0];
- izch[mpoi]=ich+1;
- Int_t itrack = point->fTracks[1];
- Int_t ihit = point->fTracks[0];
- xgeant[mpoi] = 0;
- ygeant[mpoi] = 0;
- clsize1[mpoi] = mult1;
- clsize2[mpoi] = mult2;
- Int_t id1, id2, idum;
- id1=id2=idum=-1;
- itypg[mpoi]=0;
- ihit = ihit-1;
- if (ihit >=0 && itrack >=0) {
- gAlice->ResetHits();
- gAlice->TreeH()->GetEvent(itrack);
- TClonesArray *pMUONhits = pMUON->Hits();
- AliMUONHit* mHit;
- mHit=(AliMUONHit*) (pMUONhits->UncheckedAt(ihit));
- Int_t id = (Int_t) mHit->Particle();
- xgeant[mpoi] = mHit->Y();
- ygeant[mpoi] = mHit->X();
- if (id == kMuonPlus) itypg[mpoi]=5;
- if (id == kMuonMinus) itypg[mpoi]=6;
- TParticle *particle;
- particle = gAlice->Particle(mHit->Track());
- TParticle* particleM=gAlice->Particle(particle->GetFirstMother());
- Int_t iparent=particleM->GetPdgCode();
- printf("\n Particle Id:%d %d \n", id, iparent);
- if (iparent == 443) id2=114;
- if (iparent == 553) id2=116;
- }
- id1=itrack;
- idum=itrack+1;
- idg[mpoi] = 30000*id1+10000*idum+id2;
- mpoi++;
- } // loop over points
- } // loop over chamber
- ievr = nev;
- cout<<"evenement "<<ievr<<endl;
- nhittot1 = mpoi;
- cout<<"nhittot1="<<nhittot1<<endl;
-
- treeR->Reset();
-
- gAliFileGlobal->cd();
-
- } // if pMUON
+ // Re-fit the track:
+ // Take into account the multiple scattering
+ // Calculate the track parameter covariance matrix
+ Fit(track, kTRUE, kFALSE, kTRUE);
+
+ // Printout for debuging
+ if ((AliLog::GetDebugLevel("MUON","AliMUONTrackReconstructor") >= 1) || (AliLog::GetGlobalDebugLevel() >= 1)) {
+ cout << "ImproveTracks: track " << fRecTracksPtr->IndexOf(&track)+1 << " improved " << endl;
+ }
+
+ }
+
}
-//____________________________________________________________________________
-void trackf_fit(Int_t &ivertex, Double_t *pest, Double_t *pstep, Double_t &pxzinv, Double_t &tphi, Double_t &talam, Double_t &xvert, Double_t &yvert)
-{
- //
- // Fit a track candidate with the following input parameters:
- // INPUT : IVERTEX : vertex flag, if IVERTEX=1 (XVERT,YVERT) are free paramaters
- // if IVERTEX=1 (XVERT,YVERT)=(0.,0.)
- // PEST(5) : starting value of parameters (minuit)
- // PSTEP(5) : step size for parameters (minuit)
- // OUTPUT : PXZINV,TPHI,TALAM,XVERT,YVERT : fitted value of the parameters
-
- static Double_t arglist[10];
- static Double_t c[5] = {0.4, 0.45, 0.45, 90., 90.};
- static Double_t b1, b2, epxz, efi, exs, exvert, eyvert;
- TString chname;
- Int_t ierflg = 0;
-
- TMinuit *gMinuit = new TMinuit(5);
- gMinuit->mninit(5,10,7);
- gMinuit->SetFCN(fcnf); // constant m.f.
-
- arglist[0] = -1;
-
- gMinuit->mnexcm("SET PRINT", arglist, 1, ierflg);
- // gMinuit->mnseti('track fitting');
-
- gMinuit->mnparm(0, "invmom", pest[0], pstep[0], -c[0], c[0], ierflg);
- gMinuit->mnparm(1, "azimuth", pest[1], pstep[1], -c[1], c[1], ierflg);
- gMinuit->mnparm(2, "deep", pest[2], pstep[2], -c[2], c[2], ierflg);
- if (ivertex==1) {
- gMinuit->mnparm(3, "x ", pest[3], pstep[3], -c[3], c[3], ierflg);
- gMinuit->mnparm(4, "y ", pest[4], pstep[4], -c[4], c[4], ierflg);
- }
-
- gMinuit->mnexcm("SET NOGR", arglist, 0, ierflg);
- gMinuit->mnexcm("MINIMIZE", arglist, 0, ierflg);
- gMinuit->mnexcm("EXIT" , arglist, 0, ierflg);
-
- gMinuit->mnpout(0, chname, pxzinv, epxz, b1, b2, ierflg);
- gMinuit->mnpout(1, chname, tphi, efi, b1, b2, ierflg);
- gMinuit->mnpout(2, chname, talam, exs, b1, b2, ierflg);
- if (ivertex==1) {
- gMinuit->mnpout(3, chname, xvert, exvert, b1, b2, ierflg);
- gMinuit->mnpout(4, chname, yvert, eyvert, b1, b2, ierflg);
- }
-
- delete gMinuit;
-}
-
-//________________________________________________________________________________
-void fcnf(Int_t &npar, Double_t *grad, Double_t &fval, Double_t *pest, Int_t iflag)
+ //__________________________________________________________________________
+Bool_t AliMUONTrackReconstructor::FinalizeTrack(AliMUONTrack &track)
{
- //
- // function called by trackf_fit
- Int_t futil = 0;
- fcn(npar,grad,fval,pest,iflag,futil);
+ /// Recompute track parameters and covariances at each attached cluster
+ /// from those at the first one, if not already done
+ AliDebug(1,"Enter FinalizeTrack");
+ if (!track.IsImproved() && !track.UpdateCovTrackParamAtCluster()) {
+ AliWarning("finalization failed due to extrapolation problem");
+ return kFALSE;
+ }
+ return kTRUE;
}
-//____________________________________________________________________________
-void prec_fit(Double_t &pxzinv, Double_t &fis, Double_t &alams, Double_t &xvert, Double_t &yvert, Double_t &pxzinvf, Double_t &fif, Double_t &alf, Double_t &xvertf, Double_t &yvertf, Double_t &epxzinv, Double_t &efi, Double_t &exs, Double_t &exvert, Double_t &eyvert)
+ //__________________________________________________________________________
+Bool_t AliMUONTrackReconstructor::RefitTrack(AliMUONTrack &track, Bool_t enableImprovement)
{
- //
- // minuit fits for tracking finding
-
- static Double_t arglist[10];
- static Double_t c1[5] = {0.001, 0.001, 0.001, 1., 1.};
- static Double_t c2[5] = {0.5, 0.5, 0.5, 120., 120.};
- static Double_t emat[9];
- static Double_t b1, b2;
- Double_t fmin, fedm, errdef;
- Int_t npari, nparx, istat;
-
- TString chname;
- Int_t ierflg = 0;
-
- TMinuit *gMinuit = new TMinuit(5);
- gMinuit->mninit(5,10,7);
- gMinuit->SetFCN(fcnfitf);
-
- arglist[0] = -1.;
- gMinuit->mnexcm("SET PRINT", arglist, 1, ierflg);
-
- // gMinuit->mnseti('track fitting');
-
- gMinuit->mnparm(0,"invmom", pxzinv, c1[0], -c2[0], c2[0], ierflg); // 0.003, 0.5
- gMinuit->mnparm(1,"azimuth ", fis, c1[1], -c2[1], c2[1], ierflg);
- gMinuit->mnparm(2,"deep ", alams, c1[2], -c2[2], c2[2], ierflg);
- gMinuit->mnparm(3,"xvert", xvert, c1[3], -c2[3], c2[3], ierflg);
- gMinuit->mnparm(4,"yvert", yvert, c1[4], -c2[4], c2[4], ierflg);
-
- gMinuit->mnexcm("SET NOGR", arglist, 0, ierflg);
- arglist[0] = 2.;
- gMinuit->mnexcm("MINIMIZE", arglist, 0, ierflg);
- gMinuit->mnexcm("EXIT", arglist, 0, ierflg);
-
- gMinuit->mnpout(0, chname, pxzinvf, epxzinv, b1, b2, ierflg);
- gMinuit->mnpout(1, chname, fif, efi, b1, b2, ierflg);
- gMinuit->mnpout(2, chname, alf, exs, b1, b2, ierflg);
- gMinuit->mnpout(3, chname, xvertf, exvert, b1, b2, ierflg);
- gMinuit->mnpout(4, chname, yvertf, eyvert, b1, b2, ierflg);
-
- gMinuit->mnemat(emat, 3);
- gMinuit->mnstat(fmin, fedm, errdef, npari, nparx, istat);
-
- delete gMinuit;
+ /// re-fit the given track
+
+ // check validity of the track
+ if (track.GetNClusters() < 3) {
+ AliWarning("the track does not contain enough clusters --> unable to refit");
+ return kFALSE;
+ }
+
+ // reset the seed (i.e. parameters at first cluster) before fitting
+ AliMUONTrackParam* firstTrackParam = (AliMUONTrackParam*) track.GetTrackParamAtCluster()->First();
+ if (firstTrackParam->GetInverseBendingMomentum() == 0.) {
+ AliWarning("track parameters at first chamber are not initialized --> unable to refit");
+ return kFALSE;
+ }
+
+ // compute track parameters at each cluster from parameters at the first one
+ // necessary to compute multiple scattering effect during refitting
+ if (!track.UpdateTrackParamAtCluster()) {
+ AliWarning("bad track refitting due to extrapolation failure");
+ return kFALSE;
+ }
+
+ // Re-fit the track:
+ // Take into account the multiple scattering
+ // Calculate the track parameter covariance matrix
+ Fit(track, kTRUE, kFALSE, kTRUE);
+
+ // Improve the reconstructed tracks if required
+ track.SetImproved(kFALSE);
+ if (enableImprovement && GetRecoParam()->ImproveTracks()) ImproveTrack(track);
+
+ // Fill AliMUONTrack data members
+ if (track.GetGlobalChi2() < AliMUONTrack::MaxChi2()) return FinalizeTrack(track);
+ else {
+ AliWarning("track not finalized due to extrapolation failure");
+ return kFALSE;
+ }
+
}
-//____________________________________________________________________
-void fcnfitf(Int_t &npar, Double_t *grad, Double_t &fval, Double_t *xval, Int_t iflag)
-{
- //
- // function called by prec_fit
- Int_t futil = 0;
- fcnfit(npar,grad,fval,xval,iflag,futil);
-}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff