/**************************************************************************
- * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
* *
* Author: The ALICE Off-line Project. *
* Contributors are mentioned in the code where appropriate. *
* about the suitability of this software for any purpose. It is *
* provided "as is" without express or implied warranty. *
**************************************************************************/
-
/* $Id$ */
//-------------------------------------------------------------------------
// It reads AliITSRecPoint clusters and creates AliITStrackMI tracks
// and fills with them the ESD
// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
-// dEdx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
-//
+// dE/dx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
+// Params moved to AliITSRecoParam by: Andrea Dainese, INFN
+// Material budget from TGeo by: Ludovic Gaudichet & Andrea Dainese, INFN
//-------------------------------------------------------------------------
#include <TMatrixD.h>
#include <TTree.h>
#include <TTreeStream.h>
#include <TTree.h>
+#include <TDatabasePDG.h>
+#include <TString.h>
+
-#include "AliESD.h"
+#include "AliESDEvent.h"
+#include "AliESDtrack.h"
+#include "AliESDVertex.h"
#include "AliV0.h"
#include "AliHelix.h"
#include "AliITSRecPoint.h"
#include "AliITSgeomTGeo.h"
#include "AliITStrackerMI.h"
+#include "AliITSReconstructor.h"
#include "AliTrackPointArray.h"
#include "AliAlignObj.h"
AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[kMaxLayer]; // ITS layers
+
AliITStrackerMI::AliITStrackerMI():AliTracker(),
fI(0),
fBestTrack(),
fPass(0),
fAfterV0(kFALSE),
fLastLayerToTrackTo(0),
-fCoeficients(0),
+fCoefficients(0),
fEsd(0),
+fUseTGeo(kFALSE),
fDebugStreamer(0){
//Default constructor
+ for(Int_t i=0;i<4;i++) fSPDdetzcentre[i]=0.;
}
-
-
+//------------------------------------------------------------------------
AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
fI(kMaxLayer),
fBestTrack(),
fPass(0),
fAfterV0(kFALSE),
fLastLayerToTrackTo(kLastLayerToTrackTo),
-fCoeficients(0),
+fCoefficients(0),
fEsd(0),
+fUseTGeo(kFALSE),
fDebugStreamer(0){
//--------------------------------------------------------------------
//This is the AliITStrackerMI constructor
AliWarning("\"geom\" is actually a dummy argument !");
}
- fCoeficients = 0;
+ fCoefficients = 0;
fAfterV0 = kFALSE;
for (Int_t i=1; i<kMaxLayer+1; i++) {
fPass=0;
fConstraint[0]=1; fConstraint[1]=0;
- Double_t xyz[]={kXV,kYV,kZV}, ers[]={kSigmaXV,kSigmaYV,kSigmaZV};
- SetVertex(xyz,ers);
+ Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
+ AliITSReconstructor::GetRecoParam()->GetYVdef(),
+ AliITSReconstructor::GetRecoParam()->GetZVdef()};
+ Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
+ AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
+ AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
+ SetVertex(xyzVtx,ersVtx);
for (Int_t i=0; i<kMaxLayer; i++) fLayersNotToSkip[i]=kLayersNotToSkip[i];
fLastLayerToTrackTo=kLastLayerToTrackTo;
for (Int_t i=0;i<100000;i++){
fBestTrackIndex[i]=0;
}
+
+ // store positions of centre of SPD modules (in z)
+ Double_t tr[3];
+ AliITSgeomTGeo::GetTranslation(1,1,1,tr);
+ fSPDdetzcentre[0] = tr[2];
+ AliITSgeomTGeo::GetTranslation(1,1,2,tr);
+ fSPDdetzcentre[1] = tr[2];
+ AliITSgeomTGeo::GetTranslation(1,1,3,tr);
+ fSPDdetzcentre[2] = tr[2];
+ AliITSgeomTGeo::GetTranslation(1,1,4,tr);
+ fSPDdetzcentre[3] = tr[2];
+
+
+ fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
//
fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
}
-
+//------------------------------------------------------------------------
AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
fI(tracker.fI),
fBestTrack(tracker.fBestTrack),
fPass(tracker.fPass),
fAfterV0(tracker.fAfterV0),
fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
-fCoeficients(tracker.fCoeficients),
+fCoefficients(tracker.fCoefficients),
fEsd(tracker.fEsd),
+fUseTGeo(tracker.fUseTGeo),
fDebugStreamer(tracker.fDebugStreamer){
//Copy constructor
}
-
+//------------------------------------------------------------------------
AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
//Assignment operator
this->~AliITStrackerMI();
new(this) AliITStrackerMI(tracker);
return *this;
}
-
-
+//------------------------------------------------------------------------
AliITStrackerMI::~AliITStrackerMI()
{
//
//destructor
//
- if (fCoeficients) delete []fCoeficients;
+ if (fCoefficients) delete []fCoefficients;
if (fDebugStreamer) {
//fDebugStreamer->Close();
delete fDebugStreamer;
}
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::SetLayersNotToSkip(Int_t *l) {
//--------------------------------------------------------------------
//This function set masks of the layers which must be not skipped
//--------------------------------------------------------------------
for (Int_t i=0; i<kMaxLayer; i++) fLayersNotToSkip[i]=l[i];
}
-
+//------------------------------------------------------------------------
Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
//--------------------------------------------------------------------
//This function loads ITS clusters
Int_t ncl=clusters->GetEntriesFast();
SignDeltas(clusters,GetZ());
- //*** The Delta transformation
- TGeoHMatrix delta;
- AliITSgeomTGeo::GetTrackingMatrix(j,delta);
- TGeoHMatrix m;
- AliITSgeomTGeo::GetOrigMatrix(j,m);
- delta.MultiplyLeft(&(m.Inverse()));
- const TGeoHMatrix *tm = AliITSgeomTGeo::GetTracking2LocalMatrix(j);
- delta.MultiplyLeft(&(tm->Inverse()));
- //***
-
while (ncl--) {
AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
+ detector=c->GetDetectorIndex();
- //*** Shift the cluster to the misaligned position
- Double_t xyz[3]={c->GetX(),c->GetY(),c->GetZ()};
- Double_t mxyz[3]={0.};
-
- delta.LocalToMaster(xyz,mxyz);
-
- c->SetX(mxyz[0]);
- c->AliCluster::SetY(mxyz[1]);
- c->AliCluster::SetZ(mxyz[2]);
- //***
+ if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
}
clusters->Delete();
- //add dead zone virtual "cluster"
- if (i<2){
- for (Float_t ydead = 0; ydead < 1.31 ; ydead+=(i+1.)*0.018){
- Int_t lab[4] = {0,0,0,detector};
- Int_t info[3] = {0,0,0};
- Float_t hit[5]={0,0,0.004/12.,0.001/12.,0};
- if (i==0) hit[0] =ydead-0.4;
- if (i==1) hit[0]=ydead-3.75;
- hit[1] =-0.04;
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<2.)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab, hit, info));
- hit[1]=-7.05;
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<2.)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab, hit, info));
- hit[1]=-7.15;
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<2.)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab, hit, info));
- hit[1] =0.06;
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<2.)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab, hit, info));
- hit[1]=7.05;
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<2.)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab, hit, info));
- hit[1]=7.25;
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<2.)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab, hit, info));
+ // add dead zone "virtual" cluster in SPD, if there is a cluster within
+ // zwindow cm from the dead zone
+ if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
+ for (Float_t xdead = 0; xdead < kSPDdetxlength; xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
+ Int_t lab[4] = {0,0,0,detector};
+ Int_t info[3] = {0,0,i};
+ Float_t q = 0.;
+ Float_t hit[5] = {xdead,
+ 0.,
+ AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
+ AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
+ q};
+ Bool_t local = kTRUE;
+ Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
+ hit[1] = fSPDdetzcentre[0]+0.5*kSPDdetzlength;
+ if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
+ fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
+ hit[1] = fSPDdetzcentre[1]-0.5*kSPDdetzlength;
+ if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
+ fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
+ hit[1] = fSPDdetzcentre[1]+0.5*kSPDdetzlength;
+ if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
+ fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
+ hit[1] = fSPDdetzcentre[2]-0.5*kSPDdetzlength;
+ if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
+ fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
+ hit[1] = fSPDdetzcentre[2]+0.5*kSPDdetzlength;
+ if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
+ fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
+ hit[1] = fSPDdetzcentre[3]-0.5*kSPDdetzlength;
+ if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
+ fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
}
}
return 0;
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::UnloadClusters() {
//--------------------------------------------------------------------
//This function unloads ITS clusters
//--------------------------------------------------------------------
for (Int_t i=0; i<kMaxLayer; i++) fgLayers[i].ResetClusters();
}
-
-static Int_t CorrectForDeadZoneMaterial(AliITStrackMI *t) {
+//------------------------------------------------------------------------
+static Int_t CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
//--------------------------------------------------------------------
// Correction for the material between the TPC and the ITS
- // (should it belong to the TPC code ?)
//--------------------------------------------------------------------
- Double_t riw=80., diw=0.0053, x0iw=30; // TPC inner wall ?
- Double_t rcd=61., dcd=0.0053, x0cd=30; // TPC "central drum" ?
- Double_t yr=12.8, dr=0.03; // rods ?
- Double_t zm=0.2, dm=0.40; // membrane
- //Double_t rr=52., dr=0.19, x0r=24., yyr=7.77; //rails
- Double_t rs=50., ds=0.001; // something belonging to the ITS (screen ?)
-
- if (t->GetX() > riw) {
- if (!t->PropagateTo(riw,diw,x0iw)) return 1;
- if (TMath::Abs(t->GetY())>yr) t->CorrectForMaterial(dr);
- if (TMath::Abs(t->GetZ())<zm) t->CorrectForMaterial(dm);
- if (!t->PropagateTo(rcd,dcd,x0cd)) return 1;
- //Double_t x,y,z; t->GetGlobalXYZat(rr,x,y,z);
- //if (TMath::Abs(y)<yyr) t->PropagateTo(rr,dr,x0r);
- if (!t->PropagateTo(rs,ds)) return 1;
- } else if (t->GetX() < rs) {
- if (!t->PropagateTo(rs,-ds)) return 1;
- //Double_t x,y,z; t->GetGlobalXYZat(rr,x,y,z);
- //if (TMath::Abs(y)<yyr) t->PropagateTo(rr,-dr,x0r);
- if (!t->PropagateTo(rcd,-dcd,x0cd)) return 1;
- if (!t->PropagateTo(riw+0.001,-diw,x0iw)) return 1;
+ if (t->GetX() > kriw) { // inward direction
+ if (!t->PropagateToTGeo(kriw,1)) return 1;// TPC inner wall
+ if (!t->PropagateToTGeo(krcd,1)) return 1;// TPC central drum
+ if (!t->PropagateToTGeo(krs,1)) return 1;// ITS screen
+ /* without TGeo:
+ if (!t->PropagateTo(kriw,kdiw,kX0iw)) return 1;// TPC inner wall
+ if (TMath::Abs(t->GetY())>kyr) t->CorrectForMaterial(kdr);//rods
+ if (TMath::Abs(t->GetZ())<kzm) t->CorrectForMaterial(kdm);//membrane
+ if (!t->PropagateTo(krcd,kdcd,kX0cd)) return 1;// TPC central drum
+ //Double_t x,y,z; t->GetGlobalXYZat(rr,x,y,z);
+ //if (TMath::Abs(y)<yyr) t->PropagateTo(rr,dr,x0r);
+ if (!t->PropagateTo(krs,kds,kX0Air)) return 1;// ITS screen */
+ } else if (t->GetX() < krs) { // outward direction
+ if (!t->PropagateToTGeo(krs,1)) return 1;// ITS screen
+ if (!t->PropagateToTGeo(krcd,1)) return 1;// TPC central drum
+ if (!t->PropagateToTGeo(kriw+0.001,1)) return 1;// TPC inner wall
+ /* without TGeo
+ if (!t->PropagateTo(krs,-kds,kX0Air)) return 1;
+ //Double_t x,y,z; t->GetGlobalXYZat(rr,x,y,z);
+ //if (TMath::Abs(y)<yyr) t->PropagateTo(rr,-dr,x0r);
+ if (!t->PropagateTo(krcd,-kdcd,kX0cd)) return 1;// TPC central drum
+ if (!t->PropagateTo(kriw+0.001,-kdiw,kX0iw)) return 1; */
} else {
- ::Error("CorrectForDeadZoneMaterial","track is already in the dead zone !");
+ Error("CorrectForTPCtoITSDeadZoneMaterial","Track is already in the dead zone !");
return 1;
}
return 0;
}
-
-Int_t AliITStrackerMI::Clusters2Tracks(AliESD *event) {
+//------------------------------------------------------------------------
+Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
//--------------------------------------------------------------------
// This functions reconstructs ITS tracks
// The clusters must be already loaded !
TObjArray itsTracks(15000);
fOriginal.Clear();
fEsd = event; // store pointer to the esd
+
+ // temporary (for cosmics)
+ if(event->GetVertex()) {
+ TString title = event->GetVertex()->GetTitle();
+ if(title.Contains("cosmics")) {
+ Double_t xyz[3]={GetX(),GetY(),GetZ()};
+ Double_t exyz[3]={0.1,0.1,0.1};
+ SetVertex(xyz,exyz);
+ }
+ }
+ // temporary
+
{/* Read ESD tracks */
+ Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
Int_t nentr=event->GetNumberOfTracks();
Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
while (nentr--) {
delete t;
continue;
}
- //t->fD[0] = t->GetD(GetX(),GetY());
- //t->fD[1] = t->GetZat(GetX())-GetZ();
t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
- if (t->GetMass()<0.13) t->SetMass(0.13957); // MI look to the esd - mass hypothesys !!!!!!!!!!!
+ // look at the ESD mass hypothesys !
+ if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
// write expected q
t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
- if (esd->GetV0Index(0)>0 && t->GetD(0)<30){
+ if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
//track - can be V0 according to TPC
- }
- else{
- if (TMath::Abs(t->GetD(0))>10) {
+ } else {
+ if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
delete t;
continue;
}
- if (TMath::Abs(vdist)>20) {
+ if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
delete t;
continue;
}
- if (TMath::Abs(1/t->Get1Pt())<0.120) {
+ if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
delete t;
continue;
}
- if (CorrectForDeadZoneMaterial(t)!=0) {
+ if (CorrectForTPCtoITSDeadZoneMaterial(t)!=0) {
//Warning("Clusters2Tracks",
// "failed to correct for the material in the dead zone !\n");
delete t;
Int_t nentr=itsTracks.GetEntriesFast();
fTrackHypothesys.Expand(nentr);
fBestHypothesys.Expand(nentr);
- MakeCoeficients(nentr);
+ MakeCoefficients(nentr);
Int_t ntrk=0;
+ // THE TWO TRACKING PASSES
for (fPass=0; fPass<2; fPass++) {
Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
for (Int_t i=0; i<nentr; i++) {
-// cerr<<fPass<<" "<<i<<'\r';
+ //cerr<<fPass<<" "<<i<<'\r';
fCurrentEsdTrack = i;
AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(i);
if (t==0) continue; //this track has been already tracked
if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
- //if ( (TMath::Abs(t->GetD(GetX(),GetY())) >3.) && fConstraint[fPass]) continue;
- //if ( (TMath::Abs(t->GetZat(GetX())-GetZ())>3.) && fConstraint[fPass]) continue;
Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
- if ( (TMath::Abs(dz[0])>3.) && fConstraint[fPass]) continue;
- if ( (TMath::Abs(dz[1])>3.) && fConstraint[fPass]) continue;
+ if (fConstraint[fPass]) {
+ if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
+ TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
+ }
Int_t tpcLabel=t->GetLabel(); //save the TPC track label
fI = 6;
CookLabel(besttrack,0.); //For comparison only
UpdateESDtrack(besttrack,AliESDtrack::kITSin);
- /*
- if ( besttrack->GetNumberOfClusters()<6 && fConstraint[fPass]) {
- continue;
- }
- if (besttrack->fChi2MIP[0]+besttrack->fNUsed>3.5) continue;
- if ( (TMath::Abs(besttrack->fD[0]*besttrack->fD[0]+besttrack->fD[1]*besttrack->fD[1])>0.1) && fConstraint[fPass]) continue;
- //delete itsTracks.RemoveAt(i);
- */
if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
-
t->SetReconstructed(kTRUE);
ntrk++;
}
GetBestHypothesysMIP(itsTracks);
- }
+ } // end loop on the two tracking passes
//GetBestHypothesysMIP(itsTracks);
- UpdateTPCV0(event);
- FindV02(event);
+ if(event->GetNumberOfV0s()>0) UpdateTPCV0(event);
+ if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) FindV02(event);
fAfterV0 = kTRUE;
//GetBestHypothesysMIP(itsTracks);
//
fTrackHypothesys.Delete();
fBestHypothesys.Delete();
fOriginal.Clear();
- delete []fCoeficients;
- fCoeficients=0;
+ delete [] fCoefficients;
+ fCoefficients=0;
Info("Clusters2Tracks","Number of prolonged tracks: %d\n",ntrk);
return 0;
}
-
-
-Int_t AliITStrackerMI::PropagateBack(AliESD *event) {
+//------------------------------------------------------------------------
+Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
//--------------------------------------------------------------------
// This functions propagates reconstructed ITS tracks back
// The clusters must be loaded !
ResetTrackToFollow(*t);
- // propagete to vertex [SR, GSI 17.02.2003]
+ // propagate to vertex [SR, GSI 17.02.2003]
// Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
- if (fTrackToFollow.PropagateTo(3.,0.0028,65.19)) {
- if (fTrackToFollow.PropagateToVertex(event->GetVertex())) {
- fTrackToFollow.StartTimeIntegral();
+ if(fUseTGeo) {
+ if (fTrackToFollow.PropagateToTGeo(krInsidePipe,1)) {
+ if (fTrackToFollow.PropagateToVertex(event->GetVertex())) {
+ fTrackToFollow.StartTimeIntegral();
+ }
+ fTrackToFollow.PropagateToTGeo(krOutsidePipe,1);
+ }
+ } else {
+ if (fTrackToFollow.PropagateTo(krInsidePipe,kdPipe,kX0Be)) {
+ if (fTrackToFollow.PropagateToVertex(event->GetVertex())) {
+ fTrackToFollow.StartTimeIntegral();
+ }
+ fTrackToFollow.PropagateTo(krOutsidePipe,-kdPipe,kX0Be);
}
- fTrackToFollow.PropagateTo(3.,-0.0028,65.19);
}
fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
- if (RefitAt(49.,&fTrackToFollow,t)) {
- if (CorrectForDeadZoneMaterial(&fTrackToFollow)!=0) {
+ if (RefitAt(krInsideITSscreen,&fTrackToFollow,t)) {
+ if (CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)!=0) {
//Warning("PropagateBack",
// "failed to correct for the material in the dead zone !\n");
delete t;
return 0;
}
-
-Int_t AliITStrackerMI::RefitInward(AliESD *event) {
+//------------------------------------------------------------------------
+Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
//--------------------------------------------------------------------
// This functions refits ITS tracks using the
// "inward propagated" TPC tracks
// The clusters must be loaded !
//--------------------------------------------------------------------
- RefitV02(event);
+ if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) RefitV02(event);
Int_t nentr=event->GetNumberOfTracks();
Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
continue;
}
t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
- if (CorrectForDeadZoneMaterial(t)!=0) {
+ if (CorrectForTPCtoITSDeadZoneMaterial(t)!=0) {
//Warning("RefitInward",
// "failed to correct for the material in the dead zone !\n");
delete t;
fTrackToFollow.ResetCovariance(10.);
//Refitting...
- if (RefitAt(3.7, &fTrackToFollow, t,kTRUE)) {
+ if (RefitAt(krInsideSPD1, &fTrackToFollow, t,kTRUE)) {
fTrackToFollow.SetLabel(t->GetLabel());
// fTrackToFollow.CookdEdx();
CookdEdx(&fTrackToFollow);
CookLabel(&fTrackToFollow,0.0); //For comparison only
- if (fTrackToFollow.PropagateTo(3.,0.0028,65.19)) {//The beam pipe
- AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
- esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit);
- Float_t r[3]={0.,0.,0.};
- Double_t maxD=3.;
+ //The beam pipe
+ Bool_t okToPipe;
+ if(fUseTGeo) {
+ okToPipe = fTrackToFollow.PropagateToTGeo(krInsidePipe,1);
+ } else {
+ okToPipe = fTrackToFollow.PropagateTo(krInsidePipe,kdPipe,kX0Be);
+ }
+ if(okToPipe) {
+ AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
+ esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit);
+ Float_t r[3]={0.,0.,0.};
+ Double_t maxD=3.;
esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
- ntrk++;
+ ntrk++;
}
+
}
delete t;
}
return 0;
}
-
+//------------------------------------------------------------------------
AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
//--------------------------------------------------------------------
// Return pointer to a given cluster
Int_t c=(index & 0x0fffffff) >> 00;
return fgLayers[l].GetCluster(c);
}
-
-#include "TGeoManager.h"
-#include "TGeoMatrix.h"
-#include "TGeoPhysicalNode.h"
-
+//------------------------------------------------------------------------
Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
- //
+ //--------------------------------------------------------------------
// Get track space point with index i
- //
+ //--------------------------------------------------------------------
+
Int_t l=(index & 0xf0000000) >> 28;
Int_t c=(index & 0x0fffffff) >> 00;
AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
Int_t idet = cl->GetDetectorIndex();
- const char* name = AliAlignObj::SymName((AliAlignObj::ELayerID)
- (l+AliAlignObj::kFirstLayer), idet);
- TGeoPNEntry *mapPN = gGeoManager->GetAlignableEntry(name);
+ Float_t xyz[3];
+ Float_t cov[6];
+ cl->GetGlobalXYZ(xyz);
+ cl->GetGlobalCov(cov);
+ p.SetXYZ(xyz, cov);
- if (!mapPN) return kFALSE;
- TGeoPhysicalNode *node = mapPN->GetPhysicalNode();
- if (!node) {
- gGeoManager->MakeAlignablePN(name);
- node = mapPN->GetPhysicalNode();
- }
- if (!node) return kFALSE;
- TGeoHMatrix* matrix = node->GetMatrix();
- if (!matrix) return kFALSE;
-
- //
- // Calculate the global coordinates
- //
- Double_t localCoord[] = {cl->GetDetLocalX(), 0, cl->GetDetLocalZ()};
- // LG AliAlignObj makes life simple but keep in mind that alignable
- // LG volume doesn't mean sensitive volume. There might be a shift
- // LG between the 2, has it is here for the SPD :
- if (l<2) localCoord[1] = 0.01;
- // LG !!! Check for this when the new geometry comes !!!
- Double_t globalCoord[3] = {0};
- matrix->LocalToMaster(localCoord, globalCoord);
- Float_t xyz[3]= {globalCoord[0], globalCoord[1], globalCoord[2]};
-
- //
- // Calculate the cov matrix
- //
- TGeoRotation rotMatrix(*matrix);
- TGeoRotation rotMatrixTr(rotMatrix.Inverse());
- Double_t sigmaArray[] = {cl->GetSigmaY2(),0,0, 0,0,0, 0,0,cl->GetSigmaZ2()};
- TGeoRotation sigmMatrix;
- sigmMatrix.SetMatrix( sigmaArray );
- sigmMatrix.MultiplyBy(&rotMatrixTr, kFALSE);
- sigmMatrix.MultiplyBy(&rotMatrix, kTRUE);
- const Double_t *globalSigma = sigmMatrix.GetRotationMatrix();
- Float_t cov[6]= { globalSigma[0], globalSigma[1], globalSigma[2],
- globalSigma[4], globalSigma[5],
- globalSigma[8] };
-
- p.SetXYZ(xyz[0],xyz[1],xyz[2],cov);
- AliAlignObj::ELayerID iLayer = AliAlignObj::kInvalidLayer;
+ AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
switch (l) {
case 0:
- iLayer = AliAlignObj::kSPD1;
+ iLayer = AliGeomManager::kSPD1;
break;
case 1:
- iLayer = AliAlignObj::kSPD2;
+ iLayer = AliGeomManager::kSPD2;
break;
case 2:
- iLayer = AliAlignObj::kSDD1;
+ iLayer = AliGeomManager::kSDD1;
break;
case 3:
- iLayer = AliAlignObj::kSDD2;
+ iLayer = AliGeomManager::kSDD2;
break;
case 4:
- iLayer = AliAlignObj::kSSD1;
+ iLayer = AliGeomManager::kSSD1;
break;
case 5:
- iLayer = AliAlignObj::kSSD2;
+ iLayer = AliGeomManager::kSSD2;
break;
default:
AliWarning(Form("Wrong layer index in ITS (%d) !",l));
break;
};
- UShort_t volid = AliAlignObj::LayerToVolUID(iLayer,idet);
+ UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
p.SetVolumeID((UShort_t)volid);
return kTRUE;
}
+//------------------------------------------------------------------------
+Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
+ AliTrackPoint& p, const AliESDtrack *t) {
+ //--------------------------------------------------------------------
+ // Get track space point with index i
+ // (assign error estimated during the tracking)
+ //--------------------------------------------------------------------
+ Int_t l=(index & 0xf0000000) >> 28;
+ Int_t c=(index & 0x0fffffff) >> 00;
+ const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
+ Int_t idet = cl->GetDetectorIndex();
+ const AliITSdetector &det=fgLayers[l].GetDetector(idet);
+
+ // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
+ Float_t detxy[2];
+ detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
+ detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
+ Double_t alpha = t->GetAlpha();
+ Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
+ Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,AliTracker::GetBz()));
+ phi += alpha-det.GetPhi();
+ Float_t tgphi = TMath::Tan(phi);
+
+ Float_t tgl = t->GetTgl(); // tgl about const along track
+ Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
+
+ Float_t errlocalx,errlocalz;
+ GetError(l,cl,tgl,tgphi,expQ,errlocalx,errlocalz);
+
+
+ Float_t xyz[3];
+ Float_t cov[6];
+ cl->GetGlobalXYZ(xyz);
+ // cl->GetGlobalCov(cov);
+ Float_t pos[3] = {0.,0.,0.};
+ AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errlocalx*errlocalx,errlocalz*errlocalz,0);
+ tmpcl.GetGlobalCov(cov);
+
+ p.SetXYZ(xyz, cov);
+
+ AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
+ switch (l) {
+ case 0:
+ iLayer = AliGeomManager::kSPD1;
+ break;
+ case 1:
+ iLayer = AliGeomManager::kSPD2;
+ break;
+ case 2:
+ iLayer = AliGeomManager::kSDD1;
+ break;
+ case 3:
+ iLayer = AliGeomManager::kSDD2;
+ break;
+ case 4:
+ iLayer = AliGeomManager::kSSD1;
+ break;
+ case 5:
+ iLayer = AliGeomManager::kSSD2;
+ break;
+ default:
+ AliWarning(Form("Wrong layer index in ITS (%d) !",l));
+ break;
+ };
+ UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
+ p.SetVolumeID((UShort_t)volid);
+ return kTRUE;
+}
+//------------------------------------------------------------------------
void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
{
//--------------------------------------------------------------------
// Follow prolongation tree
//--------------------------------------------------------------------
//
+ Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
+ Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
+
AliESDtrack * esd = otrack->GetESDtrack();
- if (esd->GetV0Index(0)>0){
- //
+ if (esd->GetV0Index(0)>0) {
// TEMPORARY SOLLUTION: map V0 indexes to point to proper track
- // mapping of esd track is different as its track in Containers
+ // mapping of ESD track is different as ITS track in Containers
// Need something more stable
- // Indexes are set back againg to the ESD track indexes in UpdateTPCV0
+ // Indexes are set back again to the ESD track indexes in UpdateTPCV0
for (Int_t i=0;i<3;i++){
Int_t index = esd->GetV0Index(i);
if (index==0) break;
AliESDv0 * vertex = fEsd->GetV0(index);
if (vertex->GetStatus()<0) continue; // rejected V0
//
- if (esd->GetSign()>0) {
- vertex->SetIndex(0,esdindex);
- }
- else{
- vertex->SetIndex(1,esdindex);
- }
+ if (esd->GetSign()>0) {
+ vertex->SetIndex(0,esdindex);
+ } else {
+ vertex->SetIndex(1,esdindex);
+ }
}
}
TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
}
new(¤ttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
+
+ // material between SSD and SDD, SDD and SPD
if (ilayer==3 || ilayer==1) {
- Double_t rs=0.5*(fgLayers[ilayer+1].GetR() + r);
- Double_t d=0.0034, x0=38.6;
- if (ilayer==1) {rs=9.; d=0.0097; x0=42;}
- if (!currenttrack1.PropagateTo(rs,d,x0)) {
- continue;
+ Double_t rshield,dshield,x0shield;
+ if (ilayer==3) { // SDDouter
+ rshield=0.5*(fgLayers[ilayer+1].GetR() + r);
+ dshield=kdshieldSDD;
+ x0shield=kX0shieldSDD;
+ } else { // SPDouter
+ rshield=krshieldSPD;
+ dshield=kdshieldSPD;
+ x0shield=kX0shieldSPD;
+ }
+ if (fUseTGeo) {
+ if (!currenttrack1.PropagateToTGeo(rshield,1)) continue;
+ } else {
+ if (!currenttrack1.PropagateTo(rshield,dshield,x0shield)) continue;
}
}
- //
- //find intersection with layer
- Double_t x,y,z;
- if (!currenttrack1.GetGlobalXYZat(r,x,y,z)) {
- continue;
- }
- Double_t phi=TMath::ATan2(y,x);
+
+ Double_t phi,z;
+ if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
+
Int_t idet=layer.FindDetectorIndex(phi,z);
- if (idet<0) {
- continue;
- }
+ if (idet<0) continue;
+
+ Double_t trackGlobXYZ1[3],trackGlobXYZ2[3];
+ currenttrack1.GetXYZ(trackGlobXYZ1);
+
//propagate to the intersection
const AliITSdetector &det=layer.GetDetector(idet);
- phi=det.GetPhi();
new(¤ttrack2) AliITStrackMI(currenttrack1);
- if (!currenttrack1.Propagate(phi,det.GetR())) {
- continue;
- }
- currenttrack2.Propagate(phi,det.GetR()); //
+ if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
+ currenttrack2.Propagate(det.GetPhi(),det.GetR());
currenttrack1.SetDetectorIndex(idet);
currenttrack2.SetDetectorIndex(idet);
+ // Get the budget to the primary vertex and between the two layers
+ // for the current track being prolonged (before searching for clusters
+ // on this layer)
+ fI = ilayer;
+ Double_t budgetToPrimVertex = 0.;
+ if (fUseTGeo) {
+ if (!currenttrack2.MeanBudgetToPrimVertex(xyzVtx,2,budgetToPrimVertex))
+ budgetToPrimVertex = GetEffectiveThickness(0,0);
+ } else {
+ budgetToPrimVertex = GetEffectiveThickness(0,0);
+ }
+ Double_t mparam[7];
+ currenttrack2.GetXYZ(trackGlobXYZ2);
+ if(fUseTGeo) {
+ AliTracker::MeanMaterialBudget(trackGlobXYZ1,trackGlobXYZ2,mparam);
+ }
+
+
+ //***************
+ // DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
//
- //
- Double_t dz=7.5*TMath::Sqrt(currenttrack1.GetSigmaZ2() + 16.*kSigmaZ2[ilayer]);
- Double_t dy=7.5*TMath::Sqrt(currenttrack1.GetSigmaY2() + 16.*kSigmaY2[ilayer]);
- //
- Bool_t isBoundary=kFALSE;
- if (currenttrack1.GetY()-dy< det.GetYmin()+0.2) isBoundary = kTRUE;
- if (currenttrack1.GetY()+dy> det.GetYmax()-0.2) isBoundary = kTRUE;
- if (currenttrack1.GetZ()-dz< det.GetZmin()+0.2) isBoundary = kTRUE;
- if (currenttrack1.GetZ()+dz> det.GetZmax()-0.2) isBoundary = kTRUE;
+ Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
+ TMath::Sqrt(currenttrack1.GetSigmaZ2() +
+ AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
+ AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
+ AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
+ Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
+ TMath::Sqrt(currenttrack1.GetSigmaY2() +
+ AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
+ AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
+ AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
- if (isBoundary){ // track at boundary between detectors
- Float_t maxtgl = TMath::Abs(currenttrack1.GetTgl());
- if (maxtgl>1) maxtgl=1;
- dz = TMath::Sqrt(dz*dz+0.25*maxtgl*maxtgl);
- //
- Float_t maxsnp = TMath::Abs(currenttrack1.GetSnp());
- if (maxsnp>0.95) continue;
- //if (maxsnp>0.5) maxsnp=0.5;
- dy=TMath::Sqrt(dy*dy+0.25*maxsnp*maxsnp);
- }
+ // track at boundary between detectors, enlarge road
+ if ( (currenttrack1.GetY()-dy < det.GetYmin()+kBoundaryWidth) ||
+ (currenttrack1.GetY()+dy > det.GetYmax()-kBoundaryWidth) ||
+ (currenttrack1.GetZ()-dz < det.GetZmin()+kBoundaryWidth) ||
+ (currenttrack1.GetZ()+dz > det.GetZmax()-kBoundaryWidth) ) {
+ Float_t tgl = TMath::Abs(currenttrack1.GetTgl());
+ if (tgl > 1.) tgl=1.;
+ dz = TMath::Sqrt(dz*dz+kDeltaXNeighbDets*kDeltaXNeighbDets*tgl*tgl);
+ Float_t snp = TMath::Abs(currenttrack1.GetSnp());
+ if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) continue;
+ dy = TMath::Sqrt(dy*dy+kDeltaXNeighbDets*kDeltaXNeighbDets*snp*snp);
+ } // boundary
- Double_t zmin=currenttrack1.GetZ() - dz;
- Double_t zmax=currenttrack1.GetZ() + dz;
- Double_t ymin=currenttrack1.GetY() + r*phi - dy;
- Double_t ymax=currenttrack1.GetY() + r*phi + dy;
+ // road in global (rphi,z)
+ Double_t zmin = currenttrack1.GetZ() - dz;
+ Double_t zmax = currenttrack1.GetZ() + dz;
+ Double_t ymin = currenttrack1.GetY() + r*det.GetPhi() - dy;
+ Double_t ymax = currenttrack1.GetY() + r*det.GetPhi() + dy;
+ // select clusters in road
layer.SelectClusters(zmin,zmax,ymin,ymax);
+ //********************
+
+ // Define criteria for track-cluster association
+ Double_t msz = currenttrack1.GetSigmaZ2() +
+ AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
+ AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
+ AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
+ Double_t msy = currenttrack1.GetSigmaY2() +
+ AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
+ AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
+ AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
+ if (constrain) {
+ msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
+ msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
+ } else {
+ msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
+ msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
+ }
+ msz = 1./msz; // 1/RoadZ^2
+ msy = 1./msy; // 1/RoadY^2
//
- // loop over all possible prolongations
//
- Double_t msz=1./((currenttrack1.GetSigmaZ2() + 16.*kSigmaZ2[ilayer]));
- Double_t msy=1./((currenttrack1.GetSigmaY2() + 16.*kSigmaY2[ilayer]));
- if (constrain){
- msy/=60; msz/=60.;
- }
- else{
- msy/=50; msz/=50.;
- }
+ // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
//
- const AliITSRecPoint *c=0; Int_t ci=-1;
- Double_t chi2=12345.;
+ const AliITSRecPoint *cl=0;
+ Int_t clidx=-1;
+ Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
Int_t deadzone=0;
currenttrack = ¤ttrack1;
- while ((c=layer.GetNextCluster(ci))!=0) {
+ // loop over selected clusters
+ while ((cl=layer.GetNextCluster(clidx))!=0) {
if (ntracks[ilayer]>95) break; //space for skipped clusters
- Bool_t change =kFALSE;
- if (c->GetQ()==0 && (deadzone==1)) continue;
- Int_t idet=c->GetDetectorIndex();
- if (currenttrack->GetDetectorIndex()!=idet) {
+ Bool_t changedet =kFALSE;
+ if (cl->GetQ()==0 && (deadzone==1)) continue;
+ Int_t idet=cl->GetDetectorIndex();
+
+ if (currenttrack->GetDetectorIndex()==idet) { // track already on the cluster's detector
+ // a first cut on track-cluster distance
+ if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
+ (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
+ continue; // cluster not associated to track
+ } else { // have to move track to cluster's detector
const AliITSdetector &det=layer.GetDetector(idet);
+ // a first cut on track-cluster distance
Double_t y,z;
if (!currenttrack2.GetProlongationFast(det.GetPhi(),det.GetR(),y,z)) continue;
- Float_t pz = (z - c->GetZ()) , py=(y - c->GetY());
- if (pz*pz*msz+py*py*msy>1.) continue;
+ if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
+ (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
+ continue; // cluster not associated to track
//
new (&backuptrack) AliITStrackMI(currenttrack2);
- change = kTRUE;
+ changedet = kTRUE;
currenttrack =¤ttrack2;
if (!currenttrack->Propagate(det.GetPhi(),det.GetR())) {
new (currenttrack) AliITStrackMI(backuptrack);
- change = kFALSE;
+ changedet = kFALSE;
continue;
}
currenttrack->SetDetectorIndex(idet);
- }
- else{
- Float_t pz = (currenttrack->GetZ() - c->GetZ()) , py=(currenttrack->GetY() - c->GetY());
- if (pz*pz*msz+py*py*msy>1.) continue;
+ // Get again the budget to the primary vertex and between the two
+ // layers for the current track being prolonged, if had to change detector
+ if (fUseTGeo) {
+ if (!currenttrack->MeanBudgetToPrimVertex(xyzVtx,2,budgetToPrimVertex))
+ budgetToPrimVertex = GetEffectiveThickness(0,0);
+ currenttrack->GetXYZ(trackGlobXYZ2);
+ AliTracker::MeanMaterialBudget(trackGlobXYZ1,trackGlobXYZ2,mparam);
+ } else {
+ budgetToPrimVertex = GetEffectiveThickness(0,0);
+ }
}
- chi2=GetPredictedChi2MI(currenttrack,c,ilayer);
- if (chi2<kMaxChi2s[ilayer]){
- if (c->GetQ()==0) deadzone=1; // take dead zone only once
+ // calculate track-clusters chi2
+ chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
+ // chi2 cut
+ if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
+ if (cl->GetQ()==0) deadzone=1; // take dead zone only once
if (ntracks[ilayer]>=100) continue;
AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
updatetrack->SetClIndex(ilayer,0);
- if (change){
- new (¤ttrack2) AliITStrackMI(backuptrack);
- }
- if (c->GetQ()!=0){
- if (!UpdateMI(updatetrack,c,chi2,(ilayer<<28)+ci)) continue;
- updatetrack->SetSampledEdx(c->GetQ(),updatetrack->GetNumberOfClusters()-1); //b.b.
- }
- else {
+ if (changedet) new (¤ttrack2) AliITStrackMI(backuptrack);
+
+ if (cl->GetQ()!=0) {
+ if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) continue;
+ updatetrack->SetSampledEdx(cl->GetQ(),updatetrack->GetNumberOfClusters()-1); //b.b.
+ } else { // cluster in dead zone
updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
updatetrack->SetDeadZoneProbability(GetDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
}
- if (c->IsUsed()){
- updatetrack->IncrementNUsed();
+ if (cl->IsUsed()) updatetrack->IncrementNUsed();
+
+ // apply correction for material of the current layer
+ if(fUseTGeo) {
+ Double_t d,lengthTimesMeanDensity;
+ d=mparam[1];
+ lengthTimesMeanDensity=mparam[0]*mparam[4];
+ updatetrack->CorrectForMeanMaterial(d,lengthTimesMeanDensity);
+ } else {
+ Double_t d,x0;
+ d=layer.GetThickness(updatetrack->GetY(),updatetrack->GetZ(),x0);
+ updatetrack->CorrectForMaterial(d,x0);
}
- Double_t x0;
- Double_t d=layer.GetThickness(updatetrack->GetY(),updatetrack->GetZ(),x0);
- updatetrack->CorrectForMaterial(d,x0);
- if (constrain) {
+ if (constrain) { // apply vertex constrain
updatetrack->SetConstrain(constrain);
- fI = ilayer;
- Double_t d=GetEffectiveThickness(0,0); //Think of this !!!!
- Double_t xyz[]={GetX(),GetY(),GetZ()};
- Double_t ptfactor = 1;
- Double_t ers[]={GetSigmaX()*ptfactor,GetSigmaY()*ptfactor,GetSigmaZ()};
Bool_t isPrim = kTRUE;
- if (ilayer<4){
- //updatetrack->fD[0] = updatetrack->GetD(GetX(),GetY());
- //updatetrack->fD[1] = updatetrack->GetZat(GetX())-GetZ();
+ if (ilayer<4) { // check that it's close to the vertex
updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
- if ( TMath::Abs(updatetrack->GetD(0)/(1.+ilayer))>0.4 || TMath::Abs(updatetrack->GetD(1)/(1.+ilayer))>0.4) isPrim=kFALSE;
+ if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
+ AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
+ TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
+ AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
}
- if (isPrim) updatetrack->Improve(d,xyz,ers);
+ if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
} //apply vertex constrain
ntracks[ilayer]++;
- } // create new hypothesy
+ } // create new hypothesis
} // loop over possible cluster prolongation
- // if (constrain&&itrack<2&¤ttrack1.fNSkipped==0 && deadzone==0){
- if (constrain&&itrack<2&¤ttrack1.GetNSkipped()==0 && deadzone==0&&ntracks[ilayer]<100){
+ if (constrain&&itrack<2&¤ttrack1.GetNSkipped()==0 && deadzone==0&&ntracks[ilayer]<100) {
AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
vtrack->SetClIndex(ilayer,0);
- fI = ilayer;
- Double_t d=GetEffectiveThickness(0,0); //Think of this !!!!
- Double_t xyz[]={GetX(),GetY(),GetZ()};
- Double_t ers[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
- vtrack->Improve(d,xyz,ers);
+ vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
vtrack->IncrementNSkipped();
ntracks[ilayer]++;
}
- if (constrain&&itrack<1&&TMath::Abs(currenttrack1.GetTgl())>1.1){ //big theta -- for low mult. runs
+ if (constrain&&itrack<1&&TMath::Abs(currenttrack1.GetTgl())>1.1) { //big theta - for low flux
AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
vtrack->SetClIndex(ilayer,0);
- fI = ilayer;
- Double_t d=GetEffectiveThickness(0,0); //Think of this !!!!
- Double_t xyz[]={GetX(),GetY(),GetZ()};
- Double_t ers[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
- vtrack->Improve(d,xyz,ers);
+ vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
ntracks[ilayer]++;
}
- } //loop over track candidates
+ }
+
+ //loop over track candidates for the current layer
//
//
Int_t accepted=0;
- Int_t golds=0;
+ Int_t golden=0;
for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
- if ( normalizedchi2[itrack]<3+0.5*ilayer) golds++;
- if (ilayer>4) accepted++;
- else{
- if ( constrain && normalizedchi2[itrack]<kMaxNormChi2C[ilayer]+1) accepted++;
- if (!constrain && normalizedchi2[itrack]<kMaxNormChi2NonC[ilayer]+1) accepted++;
+ if (normalizedchi2[itrack] <
+ AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
+ if (ilayer>4) {
+ accepted++;
+ } else {
+ if (constrain) { // constrain
+ if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
+ accepted++;
+ } else { // !constrain
+ if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
+ accepted++;
+ }
}
}
- TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
+ // sort tracks by increasing normalized chi2
+ TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
- if (ntracks[ilayer]<golds+2+ilayer) ntracks[ilayer]=TMath::Min(golds+2+ilayer,accepted);
+ if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
if (ntracks[ilayer]>90) ntracks[ilayer]=90;
- } //loop over layers
+ } // end loop over layers
+
//printf("%d\t%d\t%d\t%d\t%d\t%d\n",ntracks[0],ntracks[1],ntracks[2],ntracks[3],ntracks[4],ntracks[5]);
- Int_t max = constrain? 20: 5;
- for (Int_t i=0;i<TMath::Min(max,ntracks[0]);i++) {
+ //
+ // Now select tracks to be kept
+ //
+ Int_t max = constrain ? 20 : 5;
+
+ // tracks that reach layer 0 (SPD inner)
+ for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
AliITStrackMI & track= tracks[0][nindexes[0][i]];
if (track.GetNumberOfClusters()<2) continue;
- if (!constrain&&track.GetNormChi2(0)>7.)continue;
+ if (!constrain && track.GetNormChi2(0) >
+ AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
AddTrackHypothesys(new AliITStrackMI(track), esdindex);
}
+
+ // tracks that reach layer 1 (SPD outer)
for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
AliITStrackMI & track= tracks[1][nindexes[1][i]];
if (track.GetNumberOfClusters()<4) continue;
- if (!constrain&&track.GetNormChi2(1)>7.)continue;
+ if (!constrain && track.GetNormChi2(1) >
+ AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
if (constrain) track.IncrementNSkipped();
if (!constrain) {
track.SetD(0,track.GetD(GetX(),GetY()));
}
AddTrackHypothesys(new AliITStrackMI(track), esdindex);
}
- //}
-
+
+ // tracks that reack layer 2 (SDD inner), only during non-constrained pass
if (!constrain){
for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
AliITStrackMI & track= tracks[2][nindexes[2][i]];
if (track.GetNumberOfClusters()<3) continue;
- if (!constrain&&track.GetNormChi2(2)>7.)continue;
+ if (!constrain && track.GetNormChi2(2) >
+ AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
if (!constrain){
track.SetD(0,track.GetD(GetX(),GetY()));
}
}
- if (!constrain){
+ if (!constrain) {
//
- // register best tracks - important for V0 finder
+ // register best track of each layer - important for V0 finder
//
for (Int_t ilayer=0;ilayer<5;ilayer++){
if (ntracks[ilayer]==0) continue;
for (Int_t i=0;i<3;i++){
Int_t index = otrack->GetESDtrack()->GetV0Index(i);
if (index==0) break;
- AliV0 * vertex = (AliV0*)fEsd->GetV0(index);
+ AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
if (vertex->GetStatus()<0) continue; // rejected V0
//
if (otrack->GetSign()>0) {
if (track.GetSign()>0) {
vertex->SetParamP(track);
vertex->Update(fprimvertex);
- // vertex->SetIndex(0,track.fESDtrack->GetID());
+ //vertex->SetIndex(0,track.fESDtrack->GetID());
if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
}else{
vertex->SetParamN(track);
}
vertex->SetStatus(vertex->GetStatus()+1);
}else{
- // vertex->SetStatus(-2); // reject V0 - not enough clusters
+ //vertex->SetStatus(-2); // reject V0 - not enough clusters
}
}
- // if (nearestold>3){
-// Int_t indexlayer = (ntracks[0]>0)? 0:1;
-// if (ntracks[indexlayer]>0){
-// AliITStrackMI & track= tracks[indexlayer][nindexes[indexlayer][0]];
-// if (track.GetNumberOfClusters()>4&&track.fNormChi2[indexlayer]<4){
-// vertex->SetStatus(-1); // reject V0 - clusters before
-// }
-// }
-// }
}
- }
+ }
+
}
-
-
+//------------------------------------------------------------------------
AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
{
//--------------------------------------------------------------------
//
return fgLayers[layer];
}
-
+//------------------------------------------------------------------------
AliITStrackerMI::AliITSlayer::AliITSlayer():
fR(0),
fPhiOffset(0),
fClusterTracks[3][i]=-1;
}
}
-
+//------------------------------------------------------------------------
AliITStrackerMI::AliITSlayer::
AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
fR(r),
//main AliITSlayer constructor
//--------------------------------------------------------------------
fDetectors=new AliITSdetector[fNladders*fNdetectors];
- fRoad=2*fR*TMath::Sqrt(3.14/1.);//assuming that there's only one cluster
+ fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
}
-
+//------------------------------------------------------------------------
AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
fR(layer.fR),
fPhiOffset(layer.fPhiOffset),
fRoad(layer.fRoad){
//Copy constructor
}
-
-
+//------------------------------------------------------------------------
AliITStrackerMI::AliITSlayer::~AliITSlayer() {
//--------------------------------------------------------------------
// AliITSlayer destructor
fClusterTracks[3][i]=-1;
}
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::AliITSlayer::ResetClusters() {
//--------------------------------------------------------------------
// This function removes loaded clusters
fN=0;
fI=0;
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::AliITSlayer::ResetWeights() {
//--------------------------------------------------------------------
// This function reset weights of the clusters
}
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::AliITSlayer::ResetRoad() {
//--------------------------------------------------------------------
// This function calculates the road defined by the cluster density
for (Int_t i=0; i<fN; i++) {
if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
}
- //if (n>1) fRoad=2*fR*TMath::Sqrt(3.14/n);
- if (n>1) fRoad=2*fR*TMath::Sqrt(3.14/n);
+ if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
}
-
-
-Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *c) {
+//------------------------------------------------------------------------
+Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
//--------------------------------------------------------------------
//This function adds a cluster to this layer
//--------------------------------------------------------------------
return 1;
}
fCurrentSlice=-1;
- fClusters[fN]=c;
+ fClusters[fN]=cl;
fN++;
- AliITSdetector &det=GetDetector(c->GetDetectorIndex());
- if (c->GetY()<det.GetYmin()) det.SetYmin(c->GetY());
- if (c->GetY()>det.GetYmax()) det.SetYmax(c->GetY());
- if (c->GetZ()<det.GetZmin()) det.SetZmin(c->GetZ());
- if (c->GetZ()>det.GetZmax()) det.SetZmax(c->GetZ());
+ AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
+ if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
+ if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
+ if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
+ if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
return 0;
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::AliITSlayer::SortClusters()
{
//
}
-
-
+//------------------------------------------------------------------------
Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
//--------------------------------------------------------------------
// This function returns the index of the nearest cluster
}
return m;
}
-
-
+//------------------------------------------------------------------------
void AliITStrackerMI::AliITSlayer::
SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
//--------------------------------------------------------------------
fSkip = 0;
fAccepted =0;
}
-
-
-
-
+//------------------------------------------------------------------------
Int_t AliITStrackerMI::AliITSlayer::
FindDetectorIndex(Double_t phi, Double_t z) const {
//--------------------------------------------------------------------
//This function finds the detector crossed by the track
//--------------------------------------------------------------------
- Double_t dphi=-(phi-fPhiOffset);
+ Double_t dphi;
+ if (fZOffset<0) // old geometry
+ dphi = -(phi-fPhiOffset);
+ else // new geometry
+ dphi = phi-fPhiOffset;
+
if (dphi < 0) dphi += 2*TMath::Pi();
else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
return np*fNdetectors + nz;
}
-
-
+//------------------------------------------------------------------------
const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci){
//--------------------------------------------------------------------
// This function returns clusters within the "window"
}
return 0;
}
-
-
-
+//------------------------------------------------------------------------
Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
const {
//--------------------------------------------------------------------
- //This function returns the layer thickness at this point (units X0)
+ // This function returns the layer thickness at this point (units X0)
//--------------------------------------------------------------------
Double_t d=0.0085;
- x0=21.82;
+ x0=kX0Air;
if (43<fR&&fR<45) { //SSD2
Double_t dd=0.0034;
d=dd;
Double_t dd=0.0063; x0=21.5;
d=dd;
if (TMath::Abs(y-3.08)>0.5) d+=dd;
- //if (TMath::Abs(y-3.08)>0.45) d+=dd;
- if (TMath::Abs(y-3.03)<0.10) {d+=0.014;}
+ if (TMath::Abs(y-3.03)<0.10) d+=0.014;
} else
if (3<fR&&fR<5) { //SPD1
Double_t dd=0.0063; x0=21.5;
d=dd;
if (TMath::Abs(y+0.21)>0.6) d+=dd;
- //if (TMath::Abs(y+0.21)>0.45) d+=dd;
- if (TMath::Abs(y+0.10)<0.10) {d+=0.014;}
+ if (TMath::Abs(y+0.10)<0.10) d+=0.014;
}
return d;
}
-
+//------------------------------------------------------------------------
Double_t AliITStrackerMI::GetEffectiveThickness(Double_t y,Double_t z) const
{
//--------------------------------------------------------------------
- //Returns the thickness between the current layer and the vertex (units X0)
+ // Returns the thickness between the current layer and the vertex (units X0)
//--------------------------------------------------------------------
- Double_t d=0.0028*3*3; //beam pipe
- Double_t x0=0;
+ // beam pipe
+ Double_t d=kdPipe*krPipe*krPipe;
+
+ // layers
+ Double_t x0=0;
Double_t xn=fgLayers[fI].GetR();
for (Int_t i=0; i<fI; i++) {
Double_t xi=fgLayers[i].GetR();
d+=fgLayers[i].GetThickness(y,z,x0)*xi*xi;
}
+ // shields
if (fI>1) {
- Double_t xi=9.;
- d+=0.0097*xi*xi;
+ d+=kdshieldSPD*krshieldSPD*krshieldSPD;
}
-
if (fI>3) {
Double_t xi=0.5*(fgLayers[3].GetR()+fgLayers[4].GetR());
- d+=0.0034*xi*xi;
+ d+=kdshieldSDD*xi*xi;
}
return d/(xn*xn);
}
-
+//------------------------------------------------------------------------
Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
//--------------------------------------------------------------------
// This function returns number of clusters within the "window"
}
return ncl;
}
-
+//------------------------------------------------------------------------
Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *t,
const AliITStrackMI *c, Bool_t extra) {
//--------------------------------------------------------------------
index[nl]=idx;
}
+ // special for cosmics: check which the innermost layer crossed
+ // by the track
+ Int_t innermostlayer=5;
+ Double_t d = TMath::Abs(t->GetD(0.,0.));
+ for(innermostlayer=0; innermostlayer<kMaxLayer; innermostlayer++)
+ if(d<fgLayers[innermostlayer].GetR()) break;
+ //printf(" d %f innermost %d\n",d,innermostlayer);
+
Int_t from, to, step;
if (xx > t->GetX()) {
- from=0; to=kMaxLayer;
+ from=innermostlayer; to=kMaxLayer;
step=+1;
} else {
- from=kMaxLayer-1; to=-1;
+ from=kMaxLayer-1; to=innermostlayer-1;
step=-1;
}
+ // loop on the layers
for (Int_t i=from; i != to; i += step) {
AliITSlayer &layer=fgLayers[i];
Double_t r=layer.GetR();
- {
+ // material between SSD and SDD, SDD and SPD
Double_t hI=i-0.5*step;
if (TMath::Abs(hI-1.5)<0.01 || TMath::Abs(hI-3.5)<0.01) {
- Double_t rs=0.5*(fgLayers[i-step].GetR() + r);
- Double_t d=0.0034, x0=38.6;
- if (TMath::Abs(hI-1.5)<0.01) {rs=9.; d=0.0097; x0=42;}
- if (!t->PropagateTo(rs,-step*d,x0)) {
- return kFALSE;
- }
- }
+ Double_t rshield,dshield,x0shield;
+ if (TMath::Abs(hI-3.5)<0.01) { // SDDouter
+ rshield=0.5*(fgLayers[i-step].GetR() + r);
+ dshield=kdshieldSDD;
+ x0shield=kX0shieldSDD;
+ } else { // SPDouter
+ rshield=krshieldSPD;
+ dshield=kdshieldSPD;
+ x0shield=kX0shieldSPD;
+ }
+ if (fUseTGeo) {
+ if (!t->PropagateToTGeo(rshield,1)) return kFALSE;
+ } else {
+ if (!t->PropagateTo(rshield,-step*dshield,x0shield)) return kFALSE;
+ }
}
-
+
// remember old position [SR, GSI 18.02.2003]
Double_t oldX=0., oldY=0., oldZ=0.;
if (t->IsStartedTimeIntegral() && step==1) {
}
//
- Double_t x,y,z;
- if (!t->GetGlobalXYZat(r,x,y,z)) {
- return kFALSE;
- }
- Double_t phi=TMath::ATan2(y,x);
+ Double_t oldGlobXYZ[3];
+ t->GetXYZ(oldGlobXYZ);
+
+ Double_t phi,z;
+ if (!t->GetPhiZat(r,phi,z)) return kFALSE;
+
Int_t idet=layer.FindDetectorIndex(phi,z);
if (idet<0) {
return kFALSE;
}
+
const AliITSdetector &det=layer.GetDetector(idet);
phi=det.GetPhi();
if (!t->Propagate(phi,det.GetR())) {
t->SetDetectorIndex(idet);
const AliITSRecPoint *cl=0;
- Double_t maxchi2=1000.*kMaxChi2;
+ Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
Int_t idx=index[i];
- if (idx>0) {
+ if (idx>=0) {
const AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(idx);
if (c){
if (idet != c->GetDetectorIndex()) {
}
if (cl) {
- //if (!t->Update(cl,maxchi2,idx)) {
- if (!UpdateMI(t,cl,maxchi2,idx)) {
- return kFALSE;
- }
+ if (!UpdateMI(t,cl,maxchi2,idx)) return kFALSE;
t->SetSampledEdx(cl->GetQ(),t->GetNumberOfClusters()-1);
}
- {
- Double_t x0;
- Double_t d=layer.GetThickness(t->GetY(),t->GetZ(),x0);
- t->CorrectForMaterial(-step*d,x0);
+ // Correct for material of the current layer
+ Double_t d,x0;
+ if(fUseTGeo) {
+ Double_t globXYZ[3];
+ t->GetXYZ(globXYZ);
+ Double_t mparam[7];
+ AliTracker::MeanMaterialBudget(oldGlobXYZ,globXYZ,mparam);
+ if (mparam[1]<900000) {
+ d=mparam[1];
+ Double_t lengthTimesMeanDensity=mparam[0]*mparam[4];
+ t->CorrectForMeanMaterial(d,lengthTimesMeanDensity);
+ } else {
+ d=layer.GetThickness(t->GetY(),t->GetZ(),x0);
+ t->CorrectForMaterial(-step*d,x0);
+ }
+ } else {
+ d=layer.GetThickness(t->GetY(),t->GetZ(),x0);
+ t->CorrectForMaterial(-step*d,x0);
}
+
if (extra) { //search for extra clusters
AliITStrackV2 tmp(*t);
- Double_t dz=4*TMath::Sqrt(tmp.GetSigmaZ2()+kSigmaZ2[i]);
+ Double_t dz=4*TMath::Sqrt(tmp.GetSigmaZ2()+AliITSReconstructor::GetRecoParam()->GetSigmaZ2(i));
if (dz < 0.5*TMath::Abs(tmp.GetTgl())) dz=0.5*TMath::Abs(tmp.GetTgl());
- Double_t dy=4*TMath::Sqrt(t->GetSigmaY2()+kSigmaY2[i]);
+ Double_t dy=4*TMath::Sqrt(t->GetSigmaY2()+AliITSReconstructor::GetRecoParam()->GetSigmaY2(i));
if (dy < 0.5*TMath::Abs(tmp.GetSnp())) dy=0.5*TMath::Abs(tmp.GetSnp());
Double_t zmin=t->GetZ() - dz;
Double_t zmax=t->GetZ() + dz;
layer.SelectClusters(zmin,zmax,ymin,ymax);
const AliITSRecPoint *c=0; Int_t ci=-1,cci=-1;
- Double_t maxchi2=1000.*kMaxChi2, tolerance=0.1;
+ Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2(), tolerance=0.1;
while ((c=layer.GetNextCluster(ci))!=0) {
if (idet == c->GetDetectorIndex()) continue;
}
//
- }
+ } // end loop on the layers
if (!t->PropagateTo(xx,0.,0.)) return kFALSE;
return kTRUE;
}
-
+//------------------------------------------------------------------------
Bool_t
AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *t,const Int_t *clindex) {
//--------------------------------------------------------------------
index[k]=clindex[k];
}
+ // special for cosmics: check which the innermost layer crossed
+ // by the track
+ Int_t innermostlayer=5;
+ Double_t d = TMath::Abs(t->GetD(0.,0.));
+ for(innermostlayer=0; innermostlayer<kMaxLayer; innermostlayer++)
+ if(d<fgLayers[innermostlayer].GetR()) break;
+ //printf(" d %f innermost %d\n",d,innermostlayer);
+
Int_t from, to, step;
if (xx > t->GetX()) {
- from=0; to=kMaxLayer;
+ from=innermostlayer; to=kMaxLayer;
step=+1;
} else {
- from=kMaxLayer-1; to=-1;
+ from=kMaxLayer-1; to=innermostlayer-1;
step=-1;
}
for (Int_t i=from; i != to; i += step) {
AliITSlayer &layer=fgLayers[i];
Double_t r=layer.GetR();
- if (step<0 && xx>r) break; //
- {
+ if (step<0 && xx>r) break;
+
+ // material between SSD and SDD, SDD and SPD
Double_t hI=i-0.5*step;
if (TMath::Abs(hI-1.5)<0.01 || TMath::Abs(hI-3.5)<0.01) {
- Double_t rs=0.5*(fgLayers[i-step].GetR() + r);
- Double_t d=0.0034, x0=38.6;
- if (TMath::Abs(hI-1.5)<0.01) {rs=9.; d=0.0097; x0=42;}
- if (!t->PropagateTo(rs,-step*d,x0)) {
- return kFALSE;
- }
- }
+ Double_t rshield,dshield,x0shield;
+ if (TMath::Abs(hI-3.5)<0.01) { // SDDouter
+ rshield=0.5*(fgLayers[i-step].GetR() + r);
+ dshield=kdshieldSDD;
+ x0shield=kX0shieldSDD;
+ } else { // SPDouter
+ rshield=krshieldSPD;
+ dshield=kdshieldSPD;
+ x0shield=kX0shieldSPD;
+ }
+ if (fUseTGeo) {
+ if (!t->PropagateToTGeo(rshield,1)) return kFALSE;
+ } else {
+ if (!t->PropagateTo(rshield,-step*dshield,x0shield)) return kFALSE;
+ }
}
// remember old position [SR, GSI 18.02.2003]
t->GetGlobalXYZat(t->GetX(),oldX,oldY,oldZ);
}
//
+ Double_t oldGlobXYZ[3];
+ t->GetXYZ(oldGlobXYZ);
+
+ Double_t phi,z;
+ if (!t->GetPhiZat(r,phi,z)) return kFALSE;
- Double_t x,y,z;
- if (!t->GetGlobalXYZat(r,x,y,z)) {
- return kFALSE;
- }
- Double_t phi=TMath::ATan2(y,x);
Int_t idet=layer.FindDetectorIndex(phi,z);
if (idet<0) {
return kFALSE;
t->SetDetectorIndex(idet);
const AliITSRecPoint *cl=0;
- Double_t maxchi2=1000.*kMaxChi2;
+ Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
Int_t idx=index[i];
- if (idx>0) {
+ if (idx>=0) {
const AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(idx);
if (c){
if (idet != c->GetDetectorIndex()) {
}
}
}
- /*
- if (cl==0)
- if (t->GetNumberOfClusters()>2) {
- Double_t dz=4*TMath::Sqrt(t->GetSigmaZ2()+kSigmaZ2[i]);
- Double_t dy=4*TMath::Sqrt(t->GetSigmaY2()+kSigmaY2[i]);
- Double_t zmin=t->GetZ() - dz;
- Double_t zmax=t->GetZ() + dz;
- Double_t ymin=t->GetY() + phi*r - dy;
- Double_t ymax=t->GetY() + phi*r + dy;
- layer.SelectClusters(zmin,zmax,ymin,ymax);
- const AliITSRecPoint *c=0; Int_t ci=-1;
- while ((c=layer.GetNextCluster(ci))!=0) {
- if (idet != c->GetDetectorIndex()) continue;
- Double_t chi2=t->GetPredictedChi2(c);
- if (chi2<maxchi2) { cl=c; maxchi2=chi2; idx=ci; }
- }
- }
- */
if (cl) {
- //if (!t->Update(cl,maxchi2,idx)) {
- if (!UpdateMI(t,cl,maxchi2,idx)) {
- return kFALSE;
- }
+ if (!UpdateMI(t,cl,maxchi2,idx)) return kFALSE;
t->SetSampledEdx(cl->GetQ(),t->GetNumberOfClusters()-1);
}
- {
- Double_t x0;
- Double_t d=layer.GetThickness(t->GetY(),t->GetZ(),x0);
- t->CorrectForMaterial(-step*d,x0);
+ // Correct for material of the current layer
+ Double_t d,x0;
+ if(fUseTGeo) {
+ Double_t globXYZ[3];
+ t->GetXYZ(globXYZ);
+ Double_t mparam[7];
+ AliTracker::MeanMaterialBudget(oldGlobXYZ,globXYZ,mparam);
+ if (mparam[1]<900000) {
+ d=mparam[1];
+ Double_t lengthTimesMeanDensity=mparam[0]*mparam[4];
+ t->CorrectForMeanMaterial(d,lengthTimesMeanDensity);
+ } else {
+ d=layer.GetThickness(t->GetY(),t->GetZ(),x0);
+ t->CorrectForMaterial(-step*d,x0);
+ }
+ } else {
+ d=layer.GetThickness(t->GetY(),t->GetZ(),x0);
+ t->CorrectForMaterial(-step*d,x0);
}
// track time update [SR, GSI 17.02.2003]
if (!t->PropagateTo(xx,0.,0.)) return kFALSE;
return kTRUE;
}
-
+//------------------------------------------------------------------------
Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
{
//
return normchi2;
}
-
-
+//------------------------------------------------------------------------
Double_t AliITStrackerMI::GetMatchingChi2(AliITStrackMI * track1, AliITStrackMI * track2)
{
//
vec(1,0)=track1->GetZ() - track3.GetZ();
vec(2,0)=track1->GetSnp() - track3.GetSnp();
vec(3,0)=track1->GetTgl() - track3.GetTgl();
- vec(4,0)=track1->Get1Pt() - track3.Get1Pt();
+ vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
//
TMatrixD cov(5,5);
cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
return chi2(0,0);
}
-
+//------------------------------------------------------------------------
Double_t AliITStrackerMI::GetDeadZoneProbability(Double_t zpos, Double_t zerr)
{
//
- // return probability that given point - characterized by z position and error is in dead zone
+ // return probability that given point (characterized by z position and error)
+ // is in SPD dead zone
//
- Double_t probability =0;
+ Double_t probability = 0.;
Double_t absz = TMath::Abs(zpos);
- Double_t nearestz = (absz<2)? 0.:7.1;
- if (TMath::Abs(absz-nearestz)>0.25+3*zerr) return 0;
- Double_t zmin=0, zmax=0;
- if (zpos<-6.){
- zmin = -7.25; zmax = -6.95;
- }
- if (zpos>6){
- zmin = 7.0; zmax =7.3;
- }
- if (absz<2){
- zmin = -0.75; zmax = 1.5;
+ Double_t nearestz = (absz<2.) ? 0.5*(fSPDdetzcentre[1]+fSPDdetzcentre[2]) :
+ 0.5*(fSPDdetzcentre[2]+fSPDdetzcentre[3]);
+ if (TMath::Abs(absz-nearestz)>0.25+3.*zerr) return probability;
+ Double_t zmin, zmax;
+ if (zpos<-6.) { // dead zone at z = -7
+ zmin = fSPDdetzcentre[0] + 0.5*kSPDdetzlength;
+ zmax = fSPDdetzcentre[1] - 0.5*kSPDdetzlength;
+ } else if (zpos>6.) { // dead zone at z = +7
+ zmin = fSPDdetzcentre[2] + 0.5*kSPDdetzlength;
+ zmax = fSPDdetzcentre[3] - 0.5*kSPDdetzlength;
+ } else if (absz<2.) { // dead zone at z = 0
+ zmin = fSPDdetzcentre[1] + 0.5*kSPDdetzlength;
+ zmax = fSPDdetzcentre[2] - 0.5*kSPDdetzlength;
+ } else {
+ zmin = 0.;
+ zmax = 0.;
}
- probability = (TMath::Erf((zpos-zmin)/zerr) - TMath::Erf((zpos-zmax)/zerr))*0.5;
+ // probability that the true z is in the range [zmin,zmax] (i.e. inside
+ // dead zone)
+ probability = 0.5*( TMath::Erf((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
+ TMath::Erf((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
return probability;
}
-
-
+//------------------------------------------------------------------------
Double_t AliITStrackerMI::GetTruncatedChi2(AliITStrackMI * track, Float_t fac)
{
//
Double_t normchi2 = sumchi/sumweight;
return normchi2;
}
-
-
+//------------------------------------------------------------------------
Double_t AliITStrackerMI::GetInterpolatedChi2(AliITStrackMI * forwardtrack, AliITStrackMI * backtrack)
{
//
npoints++;
}
if (npoints>1) return
- TMath::Max(TMath::Abs(0.3*forwardtrack->Get1Pt())-0.5,0.)+
+ TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
//2*forwardtrack->fNUsed+
res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
1./(1.+forwardtrack->GetNSkipped()));
return 1000;
}
-
-
-
-
-
+//------------------------------------------------------------------------
Float_t *AliITStrackerMI::GetWeight(Int_t index) {
//--------------------------------------------------------------------
// Return pointer to a given cluster
Int_t c=(index & 0x0fffffff) >> 00;
return fgLayers[l].GetWeight(c);
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::RegisterClusterTracks(AliITStrackMI* track,Int_t id)
{
//---------------------------------------------
}
}
}
+//------------------------------------------------------------------------
void AliITStrackerMI::UnRegisterClusterTracks(AliITStrackMI* track, Int_t id)
{
//---------------------------------------------
}
}
}
+//------------------------------------------------------------------------
Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
{
//-------------------------------------------------------------
track->SetNUsed(shared);
return shared;
}
-
+//------------------------------------------------------------------------
Int_t AliITStrackerMI::GetOverlapTrack(AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
{
//
}
return sharedtrack;
}
-
-
+//------------------------------------------------------------------------
AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
//
// try to find track hypothesys without conflicts
//
AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
- if (TMath::Abs(1./track10->Get1Pt())>0.5+TMath::Abs(1/track20->Get1Pt())) return track10;
+ if (track10->Pt()>0.5+track20->Pt()) return track10;
for (Int_t itrack=0;itrack<entries1;itrack++){
AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
//
w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
+s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
- +1.*TMath::Abs(1./track10->Get1Pt())/(TMath::Abs(1./track10->Get1Pt())+TMath::Abs(1./track20->Get1Pt()))
+ +1.*track10->Pt()/(track10->Pt()+track20->Pt())
);
w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
- +1.*TMath::Abs(1./track20->Get1Pt())/(TMath::Abs(1./track10->Get1Pt())+TMath::Abs(1./track20->Get1Pt()))
+ +1.*track20->Pt()/(track10->Pt()+track20->Pt())
);
Double_t sumw = w1+w2;
UnRegisterClusterTracks(track,trackID2);
}
- if (track10->GetConstrain()&&track10->GetChi2MIP(0)<kMaxChi2PerCluster[0]&&track10->GetChi2MIP(1)<kMaxChi2PerCluster[1]
- &&track10->GetChi2MIP(2)<kMaxChi2PerCluster[2]&&track10->GetChi2MIP(3)<kMaxChi2PerCluster[3]){
- // if (track10->fChi2MIP[0]<kMaxChi2PerCluster[0]&&track10->fChi2MIP[1]<kMaxChi2PerCluster[1]
- // &&track10->fChi2MIP[2]<kMaxChi2PerCluster[2]&&track10->fChi2MIP[3]<kMaxChi2PerCluster[3]){
+ if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
+ &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
+ // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
+ // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
RegisterClusterTracks(track10,trackID1);
}
- if (track20->GetConstrain()&&track20->GetChi2MIP(0)<kMaxChi2PerCluster[0]&&track20->GetChi2MIP(1)<kMaxChi2PerCluster[1]
- &&track20->GetChi2MIP(2)<kMaxChi2PerCluster[2]&&track20->GetChi2MIP(3)<kMaxChi2PerCluster[3]){
- //if (track20->fChi2MIP[0]<kMaxChi2PerCluster[0]&&track20->fChi2MIP[1]<kMaxChi2PerCluster[1]
- // &&track20->fChi2MIP[2]<kMaxChi2PerCluster[2]&&track20->fChi2MIP[3]<kMaxChi2PerCluster[3]){
+ if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
+ &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
+ //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
+ // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
RegisterClusterTracks(track20,trackID2);
}
return track10;
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
//--------------------------------------------------------------------
// This function marks clusters assigned to the track
if (c->GetSigmaZ2()>0.1) c->Use();
}
-
-
+//------------------------------------------------------------------------
void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
{
//------------------------------------------------------------------
}
array->AddLast(track);
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
{
//-------------------------------------------------------------------
track->SetFakeRatio(1.);
CookLabel(track,0.); //For comparison only
//
- //if (chi2<kMaxChi2PerCluster[0]&&track->fFakeRatio==0){
- if (chi2<kMaxChi2PerCluster[0]){
+ //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
+ if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
if (track->GetNumberOfClusters()<maxn) continue;
maxn = track->GetNumberOfClusters();
if (chi2<minchi2){
AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
if (track){
track->SetChi2MIP(0,GetNormalizedChi2(track, mode));
- if (track->GetChi2MIP(0)<kMaxChi2PerCluster[0])
+ if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
chi2[itrack] = track->GetChi2MIP(0);
else{
if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
//
TMath::Sort(entries,chi2,index,kFALSE);
besttrack = (AliITStrackMI*)array->At(index[0]);
- if (besttrack&&besttrack->GetChi2MIP(0)<kMaxChi2PerCluster[0]){
+ if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
for (Int_t i=0;i<6;i++){
if (besttrack->GetClIndex(i)>0){
erry[i] = besttrack->GetSigmaY(i); erry[i+6] = besttrack->GetSigmaY(i+6);
AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
if (track){
track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
- if (track->GetChi2MIP(0)<kMaxChi2PerCluster[0])
+ if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
chi2[itrack] = track->GetChi2MIP(0)-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
else
{
}
}
besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
- Float_t minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(kMaxChi2PerCluster[0]));
+ Float_t minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
Float_t minn = besttrack->GetNumberOfClusters()-3;
Int_t accepted=0;
for (Int_t i=0;i<entries;i++){
delete [] chi2;
delete [] index;
}
-
-
-
+//------------------------------------------------------------------------
AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
{
//-------------------------------------------------------------
//
AliITStrackMI * backtrack = new AliITStrackMI(*original);
AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
- Double_t xyzv[]={GetX(),GetY(),GetZ()};
- Double_t ersv[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
+ Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
+ Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
//
for (Int_t i=0;i<entries;i++){
AliITStrackMI * track = (AliITStrackMI*)array->At(i);
//
// backtrack
backtrack = new(backtrack) AliITStrackMI(*track);
- if (track->GetConstrain()){
- if (!backtrack->PropagateTo(3.,0.0028,65.19)) continue;
- if (!backtrack->Improve(0,xyzv,ersv)) continue;
- //if (!backtrack->PropagateTo(2.,0.0028,0)) continue; // This
- //if (!backtrack->Improve(0,xyzv,ersv)) continue; // is
- //if (!backtrack->PropagateTo(1.,0.0028,0)) continue; // an over-kill
- //if (!backtrack->Improve(0,xyzv,ersv)) continue; // (I.B.)
- //if (!backtrack->PropagateToVertex()) continue; //
+ if (track->GetConstrain()) {
+ if(fUseTGeo) {
+ if (!backtrack->PropagateToTGeo(krInsidePipe,1)) continue;
+ } else {
+ if (!backtrack->PropagateTo(krInsidePipe,kdPipe,kX0Be)) continue;
+ }
+ if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;
backtrack->ResetCovariance(10.);
- //if (!backtrack->Improve(0,xyzv,ersv)) continue;
}else{
backtrack->ResetCovariance(10.);
}
//
track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
//for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
- if (track->GetChi2MIP(1)>kMaxChi2PerCluster[1]*6.) continue;
+ if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
track->SetChi22(GetMatchingChi2(backtrack,original));
if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
- if (!(track->GetConstrain())&&track->GetChi2MIP(1)>kMaxChi2PerCluster[1]) continue;
- Bool_t isOK=kTRUE;
- if(!isOK) continue;
+ if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
//
//forward track - without constraint
forwardtrack = new(forwardtrack) AliITStrackMI(*original);
x = track->GetX();
RefitAt(x,forwardtrack,track);
track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
- if (track->GetChi2MIP(2)>kMaxChi2PerCluster[2]*6.0) continue;
- if (!(track->GetConstrain())&&track->GetChi2MIP(2)>kMaxChi2PerCluster[2]) continue;
+ if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
+ if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
//track->fD[0] = forwardtrack->GetD(GetX(),GetY());
//track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
}
track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
- if ( (track->GetChi2MIP(3)>6.*kMaxChi2PerCluster[3])) continue;
- if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*kMaxChi2PerCluster[3])) {
+ if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
+ if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
track->SetChi2MIP(3,1000);
continue;
}
AliITStrackMI * track = (AliITStrackMI*)array->At(i);
if (!track) continue;
- if (accepted>checkmax || track->GetChi2MIP(3)>kMaxChi2PerCluster[3]*6. ||
+ if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
(track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)||
track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.){
if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
Int_t list[6];
AliITSRecPoint * clist[6];
Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
- if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<kMaxChi2PerCluster[0]&&besttrack->GetChi2MIP(1)<kMaxChi2PerCluster[1]
- &&besttrack->GetChi2MIP(2)<kMaxChi2PerCluster[2]&&besttrack->GetChi2MIP(3)<kMaxChi2PerCluster[3]){
+ if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
+ &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
RegisterClusterTracks(besttrack,esdindex);
}
//
}
return besttrack;
}
-
-
-
+//------------------------------------------------------------------------
void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
{
//
if (!longtrack) {longtrack = besttrack;}
else besttrack= longtrack;
//
- if (besttrack){
+ if (besttrack) {
Int_t list[6];
AliITSRecPoint * clist[6];
Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
track->SetNUsed(shared);
track->SetNSkipped(besttrack->GetNSkipped());
track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
- if (shared>0){
+ if (shared>0) {
+ if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
Int_t nshared;
Int_t overlist[6];
//
Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
//if (sharedtrack==-1) sharedtrack=0;
- if (sharedtrack>=0){
+ if (sharedtrack>=0) {
besttrack = GetBest2Tracks(i,sharedtrack,10,5.5);
}
}
- if (besttrack&&fAfterV0){
+ if (besttrack&&fAfterV0) {
UpdateESDtrack(besttrack,AliESDtrack::kITSin);
}
if (besttrack&&fConstraint[fPass])
UpdateESDtrack(besttrack,AliESDtrack::kITSin);
- //if (besttrack&&besttrack->fConstrain)
- // UpdateESDtrack(besttrack,AliESDtrack::kITSin);
- if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5){
- if ( (TMath::Abs(besttrack->GetD(0))>0.1) && fConstraint[fPass]) {
- track->SetReconstructed(kFALSE);
- }
- if ( (TMath::Abs(besttrack->GetD(1))>0.1) && fConstraint[fPass]){
- track->SetReconstructed(kFALSE);
- }
+ if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
+ if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
+ TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
}
}
}
}
-
-
+//------------------------------------------------------------------------
void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
//--------------------------------------------------------------------
//This function "cooks" a track label. If label<0, this track is fake.
track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
nwrong+=isWrong;
}
- track->SetFakeRatio(double(nwrong)/double(track->GetNumberOfClusters()));
+ Int_t nclusters = track->GetNumberOfClusters();
+ if (nclusters > 0) //PH Some tracks don't have any cluster
+ track->SetFakeRatio(double(nwrong)/double(nclusters));
if (tpcLabel>0){
if (track->GetFakeRatio()>wrong) track->SetLabel(-tpcLabel);
else
}
}
-
-
-
+//------------------------------------------------------------------------
void AliITStrackerMI::CookdEdx(AliITStrackMI* track)
{
//
}
track->SetdEdx(sumamp/sumweight);
}
-
-
-void AliITStrackerMI::MakeCoeficients(Int_t ntracks){
+//------------------------------------------------------------------------
+void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
//
//
- if (fCoeficients) delete []fCoeficients;
- fCoeficients = new Float_t[ntracks*48];
- for (Int_t i=0;i<ntracks*48;i++) fCoeficients[i]=-1.;
+ if (fCoefficients) delete []fCoefficients;
+ fCoefficients = new Float_t[ntracks*48];
+ for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
}
-
-
+//------------------------------------------------------------------------
Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
{
//
if (cl->GetQ()<=0) return 0; // ingore the "virtual" clusters
+ //Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);printf("gtr %f %f %f\n",trxyz[0],trxyz[1],trxyz[2]);printf("gcl %f %f %f\n",clxyz[0],clxyz[1],clxyz[2]);
+
+
// Take into account the mis-alignment
Double_t x=track->GetX()+cl->GetX();
if (!track->PropagateTo(x,0.,0.)) return 0;
//
// PIXELS
if (layer<2){
-
if (TMath::Abs(ny-cl->GetNy())>0.6) {
if (ny<cl->GetNy()){
erry*=0.4+TMath::Abs(ny-cl->GetNy());
}
erry*=0.85;
errz*=0.85;
- erry= TMath::Min(erry,float(0.005));
- errz= TMath::Min(errz,float(0.03));
+ erry= TMath::Min(erry,float(0.0050));
+ errz= TMath::Min(errz,float(0.0300));
return 10;
}
-//STRIPS
+ //STRIPS
if (layer>3){
//factor 1.8 appears in new simulation
//
errz= TMath::Min(errz,float(0.05));
return 200;
}
-
-
-
+//------------------------------------------------------------------------
void AliITStrackerMI::GetDCASigma(AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
{
//
//to be paramterized using external parameters in future
//
//
- sigmarfi = 0.004+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC();
- sigmaz = 0.011+4.37*TMath::Abs(track->GetC());
+ sigmarfi = 0.0040+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC();
+ sigmaz = 0.0110+4.37*TMath::Abs(track->GetC());
}
}
}
}
-
-
+//------------------------------------------------------------------------
void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
{
//
printf("Problem\n");
}
}
-
-
-
+//------------------------------------------------------------------------
Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
//
//Get nearest upper layer close to the point xr.
}
return res;
}
-
-
-void AliITStrackerMI::UpdateTPCV0(AliESD *event){
+//------------------------------------------------------------------------
+void AliITStrackerMI::UpdateTPCV0(AliESDEvent *event){
//
//try to update, or reject TPC V0s
//
}
//
}
-
-
-
-void AliITStrackerMI::FindV02(AliESD *event)
+//------------------------------------------------------------------------
+void AliITStrackerMI::FindV02(AliESDEvent *event)
{
//
// V0 finder
//
Float_t primvertex[3]={GetX(),GetY(),GetZ()};
//
- // make its - esd map
+ // make ITS - ESD map
//
for (Int_t itrack=0;itrack<ntracks+2;itrack++) {
itsmap[itrack] = -1;
itsmap[esdindex] = itrack;
}
//
- // create its tracks from esd tracks if not done before
+ // create ITS tracks from ESD tracks if not done before
//
for (Int_t itrack=0;itrack<ntracks;itrack++){
if (itsmap[itrack]>=0) continue;
if (tpctrack->GetD(0)<20 && tpctrack->GetD(1)<20){
// tracks which can reach inner part of ITS
// propagate track to outer its volume - with correction for material
- CorrectForDeadZoneMaterial(tpctrack);
+ CorrectForTPCtoITSDeadZoneMaterial(tpctrack);
}
itsmap[itrack] = nitstracks;
fOriginal.AddAt(tpctrack,nitstracks);
//
// delete temporary arrays
//
+ delete[] forbidden;
delete[] minPointAngle;
delete[] maxr;
delete[] minr;
delete[] helixes;
delete pvertex;
}
-
-
-void AliITStrackerMI::RefitV02(AliESD *event)
+//------------------------------------------------------------------------
+void AliITStrackerMI::RefitV02(AliESDEvent *event)
{
//
//try to refit V0s in the third path of the reconstruction
continue;
}
if (v0mi->GetRr()>35){
- CorrectForDeadZoneMaterial(&tpc0);
- CorrectForDeadZoneMaterial(&tpc1);
+ CorrectForTPCtoITSDeadZoneMaterial(&tpc0);
+ CorrectForTPCtoITSDeadZoneMaterial(&tpc1);
if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){
v0temp.SetParamN(tpc0);
v0temp.SetParamP(tpc1);
}
continue;
}
- CorrectForDeadZoneMaterial(&tpc0);
- CorrectForDeadZoneMaterial(&tpc1);
+ CorrectForTPCtoITSDeadZoneMaterial(&tpc0);
+ CorrectForTPCtoITSDeadZoneMaterial(&tpc1);
// if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){
if (RefitAt(v0mi->GetRr(),&tpc0, v0mi->GetClusters(0)) && RefitAt(v0mi->GetRr(),&tpc1, v0mi->GetClusters(1))){
v0temp.SetParamN(tpc0);
}
}
}
+//------------------------------------------------------------------------
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff