// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
// dEdx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
//-------------------------------------------------------------------------
+
#include <TFile.h>
#include <TTree.h>
#include <TRandom.h>
-#include <iostream.h>
#include "AliITSgeom.h"
#include "AliITSRecPoint.h"
#include "AliITSclusterV2.h"
#include "AliITStrackerV2.h"
-//#define DEBUG
+#include "AliRunLoader.h"
+#include "AliLoader.h"
+#include "AliITSLoader.h"
-#ifdef DEBUG
-Int_t LAB=70201;
-#endif
+ClassImp(AliITStrackerV2)
AliITStrackerV2::AliITSlayer AliITStrackerV2::fLayers[kMaxLayer]; // ITS layers
-AliITStrackerV2::
-AliITStrackerV2(const AliITSgeom *geom, Int_t eventn) throw (const Char_t *) :
-AliTracker() {
+AliITStrackerV2::AliITStrackerV2(const AliITSgeom *geom, Int_t eventn, const char* evfoldname):
+ AliTracker(),
+ fEvFolderName(evfoldname) {
//--------------------------------------------------------------------
- //This is the AliITStracker constructor
- //It also reads clusters from a root file
+ //This is the AliITStrackerV2 constructor
//--------------------------------------------------------------------
- fEventN=eventn; //MI change add event number - used to generate identifier
-
AliITSgeom *g=(AliITSgeom*)geom;
Float_t x,y,z;
Int_t i;
- for (i=1; i<kMaxLayer+1; i++) {
+ for (i=1; i<kMaxLayer+1; i++)
+ {
Int_t nlad=g->GetNladders(i);
Int_t ndet=g->GetNdetectors(i);
Double_t r =-x*rot[1] + y*rot[0]; if (i==1) r=-r;
Double_t phi=TMath::ATan2(rot[1],rot[0]); if (i==1) phi-=3.1415927;
- phi+=0.5*TMath::Pi();
+ phi+=0.5*TMath::Pi(); if (phi<0) phi += 2*TMath::Pi();
AliITSdetector &det=fLayers[i-1].GetDetector((j-1)*ndet + k-1);
-if (phi<0) phi += 2*TMath::Pi();
-
new(&det) AliITSdetector(r,phi);
}
}
-
}
- try {
- //Read clusters
- //MI change
- char cname[100];
- sprintf(cname,"TreeC_ITS_%d",eventn);
- TTree *cTree=(TTree*)gDirectory->Get(cname);
+ fI=kMaxLayer;
- if (!cTree) throw
- ("AliITStrackerV2::AliITStrackerV2 can't get cTree !\n");
- TBranch *branch=cTree->GetBranch("Clusters");
- if (!branch) throw
- ("AliITStrackerV2::AliITStrackerV2 can't get Clusters branch !\n");
+ fPass=0;
+ fConstraint[0]=1; fConstraint[1]=0;
- TClonesArray dummy("AliITSclusterV2",10000), *clusters=&dummy;
- branch->SetAddress(&clusters);
+ Double_t xyz[]={kXV,kYV,kZV}, ers[]={kSigmaXV,kSigmaYV,kSigmaZV};
+ SetVertex(xyz,ers);
- Int_t nentr=(Int_t)cTree->GetEntries();
- for (i=0; i<nentr; i++) {
- if (!cTree->GetEvent(i)) continue;
- Int_t lay,lad,det; g->GetModuleId(i,lay,lad,det);
- Int_t ncl=clusters->GetEntriesFast();
- while (ncl--) {
- AliITSclusterV2 *c=(AliITSclusterV2*)clusters->UncheckedAt(ncl);
+ for (Int_t i=0; i<kMaxLayer; i++) fLayersNotToSkip[i]=kLayersNotToSkip[i];
+ fLastLayerToTrackTo=kLastLayerToTrackTo;
-#ifdef DEBUG
-if (c->GetLabel(2)!=LAB)
-if (c->GetLabel(1)!=LAB)
-if (c->GetLabel(0)!=LAB) continue;
-cout<<lay-1<<' '<<lad-1<<' '<<det-1<<' '<<c->GetY()<<' '<<c->GetZ()<<endl;
-#endif
+}
- fLayers[lay-1].InsertCluster(new AliITSclusterV2(*c));
- }
- clusters->Delete();
+void AliITStrackerV2::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 AliITStrackerV2::LoadClusters() {
+ //--------------------------------------------------------------------
+ //This function loads ITS clusters
+ //--------------------------------------------------------------------
+ //This class can go to AliITSLoader -- see AliPHOSLoader as an example
+ AliRunLoader* rl = AliRunLoader::GetRunLoader(fEvFolderName);
+ if (rl == 0x0)
+ {
+ Error("LoadClusters","Can not get RL from specified folder %s",fEvFolderName.Data());
+ return 1;
+ }
+ AliITSLoader* itsl = (AliITSLoader*)rl->GetLoader("ITSLoader");
+ if (itsl == 0x0)
+ {
+ Error("LoadClusters","Can not get ITS loader.");
+ return 1;
+ }
+
+ Int_t retval;
+ TTree *cTree=itsl->TreeC();
+ if (!cTree) {
+ retval = itsl->LoadRawClusters("read");
+ if (retval)
+ {
+ Error("LoadClusters","LoadRawClusters returned error.");
+ return 1;
}
- delete cTree; //Thanks to Mariana Bondila
+ cTree=itsl->TreeC();
+ }
+
+ if (!cTree) {
+ Error("LoadClusters"," can't get cTree !\n");
+ return 1;
}
- catch (const Char_t *msg) {
- cerr<<msg<<endl;
- throw;
+ TBranch *branch=cTree->GetBranch("Clusters");
+ if (!branch) {
+ Error("LoadClusters"," can't get Clusters branch !\n");
+ return 1;
}
- fI=kMaxLayer;
+ TClonesArray dummy("AliITSclusterV2",10000), *clusters=&dummy;
+ branch->SetAddress(&clusters);
+
+ Int_t j=0;
+ for (Int_t i=0; i<kMaxLayer; i++) {
+ Int_t ndet=fLayers[i].GetNdetectors();
+ Int_t jmax = j + fLayers[i].GetNladders()*ndet;
+ for (; j<jmax; j++) {
+ if (!cTree->GetEvent(j)) continue;
+ Int_t ncl=clusters->GetEntriesFast();
+ while (ncl--) {
+ AliITSclusterV2 *c=(AliITSclusterV2*)clusters->UncheckedAt(ncl);
+ fLayers[i].InsertCluster(new AliITSclusterV2(*c));
+ }
+ clusters->Delete();
+ }
+ fLayers[i].ResetRoad(); //road defined by the cluster density
+ }
+
+ itsl->UnloadRawClusters();
+ return 0;
+}
- fPass=0;
- fConstraint[0]=1; fConstraint[1]=0;
+void AliITStrackerV2::UnloadClusters() {
+ //--------------------------------------------------------------------
+ //This function unloads ITS clusters
+ //--------------------------------------------------------------------
+ for (Int_t i=0; i<kMaxLayer; i++) fLayers[i].ResetClusters();
}
-//#ifdef DEBUG
-static Int_t lbl;
-//#endif
+static Int_t CorrectForDeadZoneMaterial(AliITStrackV2 *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,-diw,x0iw)) return 1;
+ } else {
+ ::Error("CorrectForDeadZoneMaterial","track is already in the dead zone !");
+ return 1;
+ }
+
+ return 0;
+}
-Int_t AliITStrackerV2::Clusters2Tracks(const TFile *inp, TFile *out) {
+Int_t AliITStrackerV2::Clusters2Tracks() {
//--------------------------------------------------------------------
//This functions reconstructs ITS tracks
//--------------------------------------------------------------------
- TFile *in=(TFile*)inp;
- TDirectory *savedir=gDirectory;
- if (!in->IsOpen()) {
- cerr<<"AliITStrackerV2::Clusters2Tracks(): ";
- cerr<<"file with TPC tracks is not open !\n";
+
+ AliRunLoader* rl = AliRunLoader::GetRunLoader(fEvFolderName);
+ if (rl == 0x0)
+ {
+ Error("Clusters2Tracks","Can not get RL from specified folder %s",fEvFolderName.Data());
return 1;
- }
+ }
+ rl->GetEvent(GetEventNumber());
+ //leave loading clusters here - than it is not necessary to GetEvent two times
+ if (LoadClusters()!=0) return 1;
+
+ AliITSLoader* itsl = (AliITSLoader*)rl->GetLoader("ITSLoader");
+ AliLoader* tpcl = rl->GetLoader("TPCLoader");
+ if ( !tpcl || !itsl)
+ {
+ Error("Clusters2Tracks","Can not get loaders");
+ return 2;
+ }
+
- if (!out->IsOpen()) {
- cerr<<"AliITStrackerV2::Clusters2Tracks(): ";
- cerr<<"file for ITS tracks is not open !\n";
- return 2;
- }
-
- in->cd();
-
- char tname[100];
Int_t nentr=0; TObjArray itsTracks(15000);
{/* Read TPC tracks */
- sprintf(tname,"TreeT_TPC_%d",fEventN);
- TTree *tpcTree=(TTree*)in->Get(tname);
+
+ if (tpcl->TreeT() == 0x0) tpcl->LoadTracks("read");
+ TTree *tpcTree = tpcl->TreeT();
if (!tpcTree) {
- cerr<<"AliITStrackerV2::Clusters2Tracks(): "
- "can't get a tree with TPC tracks !\n";
- return 3;
+ Error("Clusters2Tracks","can't get a tree with TPC tracks !\n");
+ return 3;
}
AliTPCtrack *itrack=new AliTPCtrack;
tpcTree->SetBranchAddress("tracks",&itrack);
nentr=(Int_t)tpcTree->GetEntries();
+ Info("Clusters2Tracks","Number of TPC tracks: %d\n",nentr);
+
for (Int_t i=0; i<nentr; i++) {
tpcTree->GetEvent(i);
AliITStrackV2 *t=0;
try {
t=new AliITStrackV2(*itrack);
} catch (const Char_t *msg) {
- cerr<<msg<<endl;
+ Warning("Clusters2Tracks",msg);
delete t;
continue;
}
if (TMath::Abs(t->GetD())>4) continue;
- t->PropagateTo(80.,0.0053);
- if (TMath::Abs(t->GetY())>13.) t->CorrectForMaterial(0.03);
- if (TMath::Abs(t->GetZ())<0.2) t->CorrectForMaterial(0.40);
- t->PropagateTo(61.,0.0052);
- Double_t xk=52.,x,y,z; t->GetGlobalXYZat(xk,x,y,z);
- if (TMath::Abs(y)<7.77) t->PropagateTo(xk,0.19,24.);
- t->PropagateTo(50.,0.001);
+ if (CorrectForDeadZoneMaterial(t)!=0) {
+ Warning("Clusters2Tracks",
+ "failed to correct for the material in the dead zone !\n");
+ continue;
+ }
itsTracks.AddLast(t);
}
- delete tpcTree; //Thanks to Mariana Bondila
delete itrack;
}
itsTracks.Sort();
+ nentr=itsTracks.GetEntriesFast();
- out->cd();
- sprintf(tname,"TreeT_ITS_%d",fEventN);
- TTree itsTree(tname,"Tree with ITS tracks");
+ if (itsl->TreeT() == 0x0) itsl->MakeTree("T");
+
+ TTree& itsTree = *itsl->TreeT();
AliITStrackV2 *otrack=&fBestTrack;
+
itsTree.Branch("tracks","AliITStrackV2",&otrack,32000,0);
for (fPass=0; fPass<2; fPass++) {
Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
for (Int_t i=0; i<nentr; i++) {
- if (i%10==0) cerr<<nentr-i<<" \r";
AliITStrackV2 *t=(AliITStrackV2*)itsTracks.UncheckedAt(i);
if (t==0) continue; //this track has been already tracked
Int_t tpcLabel=t->GetLabel(); //save the TPC track label
-lbl=tpcLabel;
-#ifdef DEBUG
-lbl=tpcLabel;
-if (TMath::Abs(tpcLabel)!=LAB) continue;
-cout<<tpcLabel<<" *****************\n";
-#endif
-
ResetTrackToFollow(*t);
ResetBestTrack();
- for (FollowProlongation(); fI<kMaxLayer; fI++) {
- while (TakeNextProlongation()) FollowProlongation();
- }
-
-#ifdef DEBUG
-cout<<fBestTrack.GetNumberOfClusters()<<" number of clusters\n\n";
-#endif
-
- if (fBestTrack.GetNumberOfClusters() < kMaxLayer-kLayersToSkip) continue;
-
- if (fConstraint[fPass]) {
- Int_t index[kMaxLayer];
- Int_t k;
- for (k=0; k<kMaxLayer; k++) index[k]=-1;
- Int_t nc=fBestTrack.GetNumberOfClusters();
- for (k=0; k<nc; k++) {
- Int_t idx=fBestTrack.GetClusterIndex(k),nl=(idx&0xf0000000)>>28;
- index[nl]=idx;
+ for (FollowProlongation(); fI<kMaxLayer; fI++)
+ {
+// Info("Clusters2Tracks","PASS%d track %d fI = %d",fPass,i,fI);
+ while (TakeNextProlongation())
+ {
+// Info("Clusters2Tracks","Next Prolonagtion Taken");
+ FollowProlongation();
}
- fBestTrack.~AliITStrackV2(); new(&fBestTrack) AliITStrackV2(*t);
- if (!RefitAt(3.7, &fBestTrack, index)) continue;
- }
+ }
+
+ if (fBestTrack.GetNumberOfClusters() == 0) continue;
- fBestTrack.SetLabel(tpcLabel);
- fBestTrack.CookdEdx();
- CookLabel(&fBestTrack,0.); //For comparison only
- itsTree.Fill();
- UseClusters(&fBestTrack);
- delete itsTracks.RemoveAt(i);
+ if (fConstraint[fPass]) {
+ if (!RefitAt(3.7, t, &fBestTrack)) continue;
+ }
+ fBestTrack.SetLabel(tpcLabel);
+ fBestTrack.CookdEdx();
+ CookLabel(&fBestTrack,0.); //For comparison only
+ itsTree.Fill();
+ UseClusters(&fBestTrack);
+ delete itsTracks.RemoveAt(i);
}
}
- itsTree.Write();
+ nentr=(Int_t)itsTree.GetEntries();
+ Info("Clusters2Tracks","Number of prolonged tracks: %d\n",nentr);
+
+ itsl->WriteTracks("OVERWRITE");
itsTracks.Delete();
- savedir->cd();
- cerr<<"Number of TPC tracks: "<<nentr<<endl;
- cerr<<"Number of prolonged tracks: "<<itsTree.GetEntries()<<endl;
+
+ UnloadClusters();
return 0;
}
-Int_t AliITStrackerV2::PropagateBack(const TFile *inp, TFile *out) {
+Int_t AliITStrackerV2::PropagateBack() {
//--------------------------------------------------------------------
//This functions propagates reconstructed ITS tracks back
//--------------------------------------------------------------------
- TFile *in=(TFile*)inp;
- TDirectory *savedir=gDirectory;
+ if (LoadClusters()!=0) return 1;
- if (!in->IsOpen()) {
- cerr<<"AliITStrackerV2::PropagateBack(): ";
- cerr<<"file with ITS tracks is not open !\n";
+ AliRunLoader* rl = AliRunLoader::GetRunLoader(fEvFolderName);
+ if (rl == 0x0)
+ {
+ Error("Clusters2Tracks","Can not get RL from specified folder %s",fEvFolderName.Data());
return 1;
- }
-
- if (!out->IsOpen()) {
- cerr<<"AliITStrackerV2::PropagateBack(): ";
- cerr<<"file for back propagated ITS tracks is not open !\n";
- return 2;
- }
-
- in->cd();
- TTree *itsTree=(TTree*)in->Get("TreeT_ITS_0");
+ }
+ rl->GetEvent(GetEventNumber());
+ AliITSLoader* itsl = (AliITSLoader*)rl->GetLoader("ITSLoader");
+ if (itsl == 0x0)
+ {
+ Error("LoadClusters","Can not get ITS loader.");
+ return 1;
+ }
+
+ if (itsl->TreeT() == 0x0) itsl->LoadTracks("read");
+ TTree *itsTree=itsl->TreeT();
if (!itsTree) {
- cerr<<"AliITStrackerV2::PropagateBack() ";
- cerr<<"can't get a tree with ITS tracks !\n";
- return 3;
+ Error("PropagateBack","can't get a tree with ITS tracks !\n");
+ return 3;
}
AliITStrackV2 *itrack=new AliITStrackV2;
itsTree->SetBranchAddress("tracks",&itrack);
- out->cd();
- TTree backTree("TreeT_ITSb_0","Tree with back propagated ITS tracks");
- AliTPCtrack *otrack=0;
- backTree.Branch("tracks","AliTPCtrack",&otrack,32000,0);
+
+ itsl->MakeTree("B");//nake tree for back propagated tracks
+ if (itsl->TreeB() == 0x0)
+ {
+ Error("PropagateBack","Can not create tree for back propagated tracks !\n");
+ return 3;
+ }
+ TTree &backTree = *itsl->TreeB();
- Int_t ntrk=0;
+ AliTPCtrack *otrack=0;
+ backTree.Branch("tracks","AliTPCtrack",&otrack,32000,2);
Int_t nentr=(Int_t)itsTree->GetEntries();
- for (Int_t i=0; i<nentr; i++) {
+ Int_t i;
+ for (i=0; i<nentr; i++) {
itsTree->GetEvent(i);
+ Int_t itsLabel=itrack->GetLabel(); //save the ITS track label
ResetTrackToFollow(*itrack);
+
+ // propagete to vertex [SR, GSI 17.02.2003]
+ fTrackToFollow.PropagateTo(3.,0.0028,65.19);
+ fTrackToFollow.PropagateToVertex();
+
+ // Start Time measurement [SR, GSI 17.02.2003]
+ fTrackToFollow.StartTimeIntegral();
+ fTrackToFollow.PropagateTo(3.,-0.0028,65.19);
+ //
+
fTrackToFollow.ResetCovariance(); fTrackToFollow.ResetClusters();
- Int_t itsLabel=fTrackToFollow.GetLabel(); //save the ITS track label
+ if (!RefitAt(49.,&fTrackToFollow,itrack)) continue;
-#ifdef DEBUG
-if (TMath::Abs(itsLabel)!=LAB) continue;
-cout<<itsLabel<<" *****************\n";
-#endif
+ if (CorrectForDeadZoneMaterial(&fTrackToFollow)!=0) {
+ Warning("PropagateBack",
+ "failed to correct for the material in the dead zone !\n");
+ continue;
+ }
+
+ fTrackToFollow.SetLabel(itsLabel);
+ otrack=new AliTPCtrack(fTrackToFollow,fTrackToFollow.GetAlpha());
+ backTree.Fill(); delete otrack;
+ UseClusters(&fTrackToFollow);
+ }
+ i=(Int_t)backTree.GetEntries();
+
+
+ itsl->WriteBackTracks("OVERWRITE");
- try {
- Int_t nc=itrack->GetNumberOfClusters();
-#ifdef DEBUG
-for (Int_t k=0; k<nc; k++) {
- Int_t index=itrack->GetClusterIndex(k);
- AliITSclusterV2 *c=(AliITSclusterV2*)GetCluster(index);
- cout<<c->GetLabel(0)<<' '<<c->GetLabel(1)<<' '<<c->GetLabel(2)<<endl;
+ Info("PropagateBack","Number of ITS tracks: %d\n",nentr);
+ Info("PropagateBack","Number of back propagated ITS tracks: %d\n",i);
+
+ delete itrack;
+
+ itsl->UnloadTracks();
+ itsl->UnloadBackTracks();
+
+ UnloadClusters();
+
+ return 0;
}
-#endif
- Int_t idx=0, l=0;
- const AliITSclusterV2 *c=0;
- if (nc--) {
- idx=itrack->GetClusterIndex(nc); l=(idx&0xf0000000)>>28;
- c=(AliITSclusterV2*)GetCluster(idx);
- }
- for (fI=0; fI<kMaxLayer; fI++) {
- AliITSlayer &layer=fLayers[fI];
- Double_t r=layer.GetR();
- if (fI==2 || fI==4) {
- Double_t rs=0.5*(fLayers[fI-1].GetR() + r);
- Double_t ds=0.034; if (fI==4) ds=0.039;
- Double_t dx0r=ds/21.82*2.33, dr=ds*2.33;
- if (!fTrackToFollow.PropagateTo(rs,1*dx0r,dr)) throw "";
- }
-
- Double_t x,y,z;
- if (!fTrackToFollow.GetGlobalXYZat(r,x,y,z))
- throw "AliITStrackerV2::PropagateBack: failed to estimate track !";
- Double_t phi=TMath::ATan2(y,x);
- Int_t idet=layer.FindDetectorIndex(phi,z);
- if (idet<0)
- throw "AliITStrackerV2::PropagateBack: failed to find a detector !\n";
- const AliITSdetector &det=layer.GetDetector(idet);
- r=det.GetR(); phi=det.GetPhi();
- if (!fTrackToFollow.Propagate(phi,r)) throw "";
- fTrackToFollow.SetDetectorIndex(idet);
-
- const AliITSclusterV2 *cl=0;
- Int_t index=0;
- Double_t maxchi2=kMaxChi2;
-
- if (l==fI) {
- idet=c->GetDetectorIndex();
- if (idet != fTrackToFollow.GetDetectorIndex()) {
- const AliITSdetector &det=layer.GetDetector(idet);
- r=det.GetR(); phi=det.GetPhi();
- if (!fTrackToFollow.Propagate(phi,r)) throw "";
- fTrackToFollow.SetDetectorIndex(idet);
- }
- Double_t chi2=fTrackToFollow.GetPredictedChi2(c);
- if (chi2<kMaxChi2) {
- cl=c; maxchi2=chi2; index=idx;
- }
- if (nc--) {
- idx=itrack->GetClusterIndex(nc); l=(idx&0xf0000000)>>28;
- c=(AliITSclusterV2*)GetCluster(idx);
- }
- }
-
- if (fTrackToFollow.GetNumberOfClusters()>2) {
- Double_t dz=3*TMath::Sqrt(fTrackToFollow.GetSigmaZ2()+kSigmaZ2[fI]);
- Double_t dy=3*TMath::Sqrt(fTrackToFollow.GetSigmaY2()+kSigmaY2[fI]);
- Double_t zmin=fTrackToFollow.GetZ() - dz;
- Double_t zmax=fTrackToFollow.GetZ() + dz;
- Double_t ymin=fTrackToFollow.GetY() + phi*r - dy;
- Double_t ymax=fTrackToFollow.GetY() + phi*r + dy;
- layer.SelectClusters(zmin,zmax,ymin,ymax);
-
- const AliITSclusterV2 *cc=0; Int_t ci;
- while ((cc=layer.GetNextCluster(ci))!=0) {
- idet=cc->GetDetectorIndex();
- if (idet != fTrackToFollow.GetDetectorIndex()) continue;
- Double_t chi2=fTrackToFollow.GetPredictedChi2(cc);
- if (chi2<maxchi2) {
- cl=cc; index=(fI<<28)+ci; maxchi2=chi2;
- }
- }
- }
- if (cl) {
- if (!fTrackToFollow.Update(cl,maxchi2,index))
- cerr<<"AliITStrackerV2::PropagateBack: filtering failed !\n";
- }
+Int_t AliITStrackerV2::RefitInward() {
+ //--------------------------------------------------------------------
+ // This functions refits ITS tracks using the
+ // "inward propagated" TPC tracks
+ //--------------------------------------------------------------------
- x=layer.GetThickness(fTrackToFollow.GetY(),fTrackToFollow.GetZ());
- fTrackToFollow.CorrectForMaterial(-x);
+ //PH 19/05 This function has to be adapted to the NewIO
+ TFile * inp = 0x0;
+ TFile * out = 0x0;
- }
+ TFile *in=(TFile*)inp;
+
+ if (LoadClusters()!=0) return 1;
+
+ if (!in->IsOpen()) {
+ Error("RefitInward","file with inward TPC tracks is not open !\n");
+ return 2;
+ }
- Double_t xk=52.,x,y,z; fTrackToFollow.GetGlobalXYZat(xk,x,y,z);
- if (TMath::Abs(y)<7.77)
- fTrackToFollow.PropagateTo(xk,-0.19,24.);
- fTrackToFollow.PropagateTo(61,-0.0110);
- fTrackToFollow.PropagateTo(80.,-0.0053);
-
- fTrackToFollow.SetLabel(itsLabel);
- otrack=new AliTPCtrack(fTrackToFollow,fTrackToFollow.GetAlpha());
- backTree.Fill(); delete otrack;
- UseClusters(&fTrackToFollow);
- cerr << ++ntrk << " \r";
+ if (!out->IsOpen()) {
+ Error("RefitInward","file for inward ITS tracks is not open !\n");
+ return 3;
+ }
+
+ Int_t i;
+
+ //LUT used for the track matching (S.Radomski's idea)
+ const Int_t nLab = 400000; // limit on the number of track labels
+ Int_t lut[nLab];
+ for(i=0; i<nLab; i++) lut[i] = -1;
+
+ Char_t tname[100];
+
+ TObjArray itsTracks(15000);
+ {/* Read the ITS tracks */
+ sprintf(tname,"TreeT_ITS_%d",GetEventNumber());
+ TTree *itsTree=(TTree*)out->Get(tname);
+ if (!itsTree) {
+ Error("RefitInward","can't get a tree with ITS tracks !\n");
+ return 3;
}
- catch (const Char_t *msg) {
- cerr<<msg<<endl;
+ AliITStrackV2 *itrack=new AliITStrackV2;
+ itsTree->SetBranchAddress("tracks",&itrack);
+ Int_t nits=(Int_t)itsTree->GetEntries();
+
+ Info("RefitInward","Number of ITS tracks: %d\n",nits);
+
+ for (Int_t i=0; i<nits; i++) {
+ itsTree->GetEvent(i);
+ Int_t lab=TMath::Abs(itrack->GetLabel());
+ if (lab < nLab) {
+ if (lut[lab]>=0) Warning("RefitInward","double track %d\n",lab);
+ lut[lab]=i;
+ } else {
+ Warning("RefitInward","Too big ITS track label: %d\n!",lab);
+ continue;
+ }
+ itsTracks.AddLast(new AliITStrackV2(*itrack));
}
+ delete itsTree;
+ delete itrack;
}
- backTree.Write();
- savedir->cd();
- cerr<<"Number of ITS tracks: "<<nentr<<endl;
- cerr<<"Number of back propagated ITS tracks: "<<ntrk<<endl;
+ out->cd();
+
+ //Create the output tree
+ sprintf(tname,"TreeT_ITSinward_%d",GetEventNumber());
+ TTree outTree(tname,"Tree with inward refitted ITS tracks");
+ AliITStrackV2 *otrack=0;
+ outTree.Branch("tracks","AliITStrackV2",&otrack,32000,0);
+
+ //Get the input tree
+ sprintf(tname,"tracksTPC_%d",GetEventNumber());
+ TTree *tpcTree=(TTree*)in->Get(tname);
+ if (!tpcTree) {
+ Error("RefitInward","can't get a tree with TPC tracks !\n");
+ return 3;
+ }
+ AliTPCtrack *itrack=new AliTPCtrack;
+ tpcTree->SetBranchAddress("tracks",&itrack);
+ Int_t ntpc=(Int_t)tpcTree->GetEntries();
+ Info("RefitInward","Number of TPC tracks: %d\n",ntpc);
+
+ for (i=0; i<ntpc; i++) {
+ tpcTree->GetEvent(i);
+ AliITStrackV2 *t=0;
+ try {
+ t=new AliITStrackV2(*itrack);
+ } catch (const Char_t *msg) {
+ Warning("RefitInward",msg);
+ delete t;
+ continue;
+ }
+ //check if this track was reconstructed in the ITS
+ Int_t lab=TMath::Abs(t->GetLabel());
+ if (lab >= nLab) {
+ Warning("RefitInward","Too big TPC track label: %d\n!",lab);
+ continue;
+ }
+ Int_t idx=lut[lab];
+ if (idx<0) continue; //no prolongation in the ITS for this track
+
+ if (CorrectForDeadZoneMaterial(t)!=0) {
+ Warning("RefitInward",
+ "failed to correct for the material in the dead zone !\n");
+ continue;
+ }
+
+ //Refitting...
+ otrack=(AliITStrackV2*)itsTracks.UncheckedAt(idx);
+ if (!RefitAt(3.7, t, otrack)) continue;
+ otrack->SetLabel(itrack->GetLabel()); //For comparison only
+ otrack->CookdEdx();
+ CookLabel(otrack,0.); //For comparison only
+ outTree.Fill();
+ delete t;
+ }
+ i=(Int_t)outTree.GetEntries();
+ Info("RefitInward","Number of inward refitted ITS tracks: %d\n",i);
+ outTree.Write();
+
+ delete tpcTree;
delete itrack;
- delete itsTree; //Thanks to Mariana Bondila
+ itsTracks.Delete();
return 0;
}
-
AliCluster *AliITStrackerV2::GetCluster(Int_t index) const {
//--------------------------------------------------------------------
// Return pointer to a given cluster
//--------------------------------------------------------------------
//This function finds a track prolongation
//--------------------------------------------------------------------
- Int_t tryAgain=kLayersToSkip;
-
- while (fI) {
+ while (fI>fLastLayerToTrackTo) {
Int_t i=fI-1;
-#ifdef DEBUG
-cout<<i<<' ';
-#endif
+
AliITSlayer &layer=fLayers[i];
AliITStrackV2 &track=fTracks[i];
Double_t r=layer.GetR();
+
if (i==3 || i==1) {
Double_t rs=0.5*(fLayers[i+1].GetR() + r);
- Double_t d=0.011; if (i==3) d=0.0053;
- if (!fTrackToFollow.PropagateTo(rs,d)) {
- //cerr<<"AliITStrackerV2::FollowProlongation: "
- //"propagation failed !\n";
- break;
+ Double_t d=0.0034, x0=38.6;
+ if (i==1) {rs=9.; d=0.0097; x0=42;}
+ if (!fTrackToFollow.PropagateTo(rs,d,x0)) {
+ //Warning("FollowProlongation","propagation failed !\n");
+ return;
}
}
//find intersection
Double_t x,y,z;
if (!fTrackToFollow.GetGlobalXYZat(r,x,y,z)) {
- //cerr<<"AliITStrackerV2::FollowProlongation: "
- //"failed to estimate track !\n";
- break;
+ //Warning("FollowProlongation","failed to estimate track !\n");
+ return;
}
Double_t phi=TMath::ATan2(y,x);
Int_t idet=layer.FindDetectorIndex(phi,z);
if (idet<0) {
- //cerr<<"AliITStrackerV2::FollowProlongation: "
- //"failed to find a detector !\n";
- break;
+ //Warning("FollowProlongation","failed to find a detector !\n");
+ return;
}
//propagate to the intersection
const AliITSdetector &det=layer.GetDetector(idet);
phi=det.GetPhi();
if (!fTrackToFollow.Propagate(phi,det.GetR())) {
- //cerr<<"AliITStrackerV2::FollowProlongation: propagation failed !\n";
- break;
+ //Warning("FollowProlongation","propagation failed !\n");
+ return;
}
fTrackToFollow.SetDetectorIndex(idet);
//Select possible prolongations and store the current track estimation
track.~AliITStrackV2(); new(&track) AliITStrackV2(fTrackToFollow);
- Double_t dz=3*TMath::Sqrt(track.GetSigmaZ2() + kSigmaZ2[i]);
+ Double_t dz=7*TMath::Sqrt(track.GetSigmaZ2() + kSigmaZ2[i]);
+ Double_t dy=7*TMath::Sqrt(track.GetSigmaY2() + kSigmaY2[i]);
+ Double_t road=layer.GetRoad();
+ if (dz*dy>road*road) {
+ Double_t dd=TMath::Sqrt(dz*dy), scz=dz/dd, scy=dy/dd;
+ dz=road*scz; dy=road*scy;
+ }
+
+ //Double_t dz=4*TMath::Sqrt(track.GetSigmaZ2() + kSigmaZ2[i]);
if (dz < 0.5*TMath::Abs(track.GetTgl())) dz=0.5*TMath::Abs(track.GetTgl());
if (dz > kMaxRoad) {
- //cerr<<"AliITStrackerV2::FollowProlongation: too broad road in Z !\n";
- break;
+ //Warning("FollowProlongation","too broad road in Z !\n");
+ return;
}
- if (TMath::Abs(fTrackToFollow.GetZ()-GetZ()) > r+dz) break;
+ if (TMath::Abs(fTrackToFollow.GetZ()-GetZ()) > r+dz) return;
- Double_t dy=4*TMath::Sqrt(track.GetSigmaY2() + kSigmaY2[i]);
+ //Double_t dy=4*TMath::Sqrt(track.GetSigmaY2() + kSigmaY2[i]);
if (dy < 0.5*TMath::Abs(track.GetSnp())) dy=0.5*TMath::Abs(track.GetSnp());
if (dy > kMaxRoad) {
- //cerr<<"AliITStrackerV2::FollowProlongation: too broad road in Y !\n";
- break;
+ //Warning("FollowProlongation","too broad road in Y !\n");
+ return;
}
Double_t zmin=track.GetZ() - dz;
fI--;
//take another prolongation
- if (!TakeNextProlongation()) if (!tryAgain--) break;
- tryAgain=kLayersToSkip;
+ if (!TakeNextProlongation())
+ if (fLayersNotToSkip[fI]) return;
}
AliITSlayer &layer=fLayers[fI];
ResetTrackToFollow(fTracks[fI]);
- Double_t dz=4*TMath::Sqrt(fTrackToFollow.GetSigmaZ2() + kSigmaZ2[fI]);
- Double_t dy=4*TMath::Sqrt(fTrackToFollow.GetSigmaY2() + kSigmaY2[fI]);
+ Double_t dz=7*TMath::Sqrt(fTrackToFollow.GetSigmaZ2() + kSigmaZ2[fI]);
+ Double_t dy=7*TMath::Sqrt(fTrackToFollow.GetSigmaY2() + kSigmaY2[fI]);
+ Double_t road=layer.GetRoad();
+ if (dz*dy>road*road) {
+ Double_t dd=TMath::Sqrt(dz*dy), scz=dz/dd, scy=dy/dd;
+ dz=road*scz; dy=road*scy;
+ }
const AliITSclusterV2 *c=0; Int_t ci=-1;
Double_t chi2=12345.;
while ((c=layer.GetNextCluster(ci))!=0) {
- //if (c->GetLabel(0)!=TMath::Abs(lbl)) continue;
Int_t idet=c->GetDetectorIndex();
if (fTrackToFollow.GetDetectorIndex()!=idet) {
const AliITSdetector &det=layer.GetDetector(idet);
ResetTrackToFollow(fTracks[fI]);
if (!fTrackToFollow.Propagate(det.GetPhi(),det.GetR())) {
- //cerr<<"AliITStrackerV2::TakeNextProlongation: "
- //"propagation failed !\n";
+ //Warning("TakeNextProlongation","propagation failed !\n");
continue;
}
fTrackToFollow.SetDetectorIndex(idet);
if (TMath::Abs(fTrackToFollow.GetZ()-GetZ())>layer.GetR()+dz) continue;
-
-#ifdef DEBUG
-cout<<fI<<" change detector !\n";
-#endif
-
}
if (TMath::Abs(fTrackToFollow.GetZ() - c->GetZ()) > dz) continue;
chi2=fTrackToFollow.GetPredictedChi2(c); if (chi2<kMaxChi2) break;
}
-#ifdef DEBUG
-cout<<fI<<" chi2="<<chi2<<' '
- <<fTrackToFollow.GetY()<<' '<<fTrackToFollow.GetZ()<<' '
- <<dy<<' '<<dz<<endl;
-#endif
-
if (chi2>=kMaxChi2) return 0;
if (!c) return 0;
if (!fTrackToFollow.Update(c,chi2,(fI<<28)+ci)) {
- //cerr<<"AliITStrackerV2::TakeNextProlongation: filtering failed !\n";
+ //Warning("TakeNextProlongation","filtering failed !\n");
return 0;
}
SetSampledEdx(c->GetQ(),fTrackToFollow.GetNumberOfClusters()-1); //b.b.
{
- Double_t d=layer.GetThickness(fTrackToFollow.GetY(),fTrackToFollow.GetZ());
- fTrackToFollow.CorrectForMaterial(d);
+ Double_t x0;
+ Double_t d=layer.GetThickness(fTrackToFollow.GetY(),fTrackToFollow.GetZ(),x0);
+ fTrackToFollow.CorrectForMaterial(d,x0);
}
if (fConstraint[fPass]) {
Double_t d=GetEffectiveThickness(0,0); //Think of this !!!!
- fTrackToFollow.Improve(d,GetY(),GetZ());
+ Double_t xyz[]={GetX(),GetY(),GetZ()};
+ Double_t ers[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
+ fTrackToFollow.Improve(d,xyz,ers);
}
-#ifdef DEBUG
-cout<<"accepted lab="<<c->GetLabel(0)<<' '
- <<fTrackToFollow.GetNumberOfClusters()<<' '
- <<fTrackToFollow.GetY()<<' '<<fTrackToFollow.GetZ()<<' '
- <<fTrackToFollow.Get1Pt()<<endl<<endl;
-#endif
-
return 1;
}
fN=0;
fI=0;
+
+ fRoad=2*fR*TMath::Sqrt(3.14/1.);//assuming that there's only one cluster
}
AliITStrackerV2::AliITSlayer::~AliITSlayer() {
for (Int_t i=0; i<fN; i++) delete fClusters[i];
}
+void AliITStrackerV2::AliITSlayer::ResetClusters() {
+ //--------------------------------------------------------------------
+ // This function removes loaded clusters
+ //--------------------------------------------------------------------
+ for (Int_t i=0; i<fN; i++) delete fClusters[i];
+ fN=0;
+ fI=0;
+}
+
+void AliITStrackerV2::AliITSlayer::ResetRoad() {
+ //--------------------------------------------------------------------
+ // This function calculates the road defined by the cluster density
+ //--------------------------------------------------------------------
+ Int_t n=0;
+ 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);
+}
+
Int_t AliITStrackerV2::AliITSlayer::InsertCluster(AliITSclusterV2 *c) {
//--------------------------------------------------------------------
//This function adds a cluster to this layer
//--------------------------------------------------------------------
if (fN==kMaxClusterPerLayer) {
- cerr<<"AliITStrackerV2::AliITSlayer::InsertCluster(): "
- "Too many clusters !\n";
- return 1;
+ ::Error("InsertCluster","Too many clusters !\n");
+ return 1;
}
if (fN==0) {fClusters[fN++]=c; return 0;}
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);
+ if (np>=fNladders) np-=fNladders;
+ if (np<0) np+=fNladders;
Double_t dz=fZOffset-z;
Int_t nz=Int_t(dz*(fNdetectors-1)*0.5/fZOffset+0.5);
-
- if (np>=fNladders) np-=fNladders;
- if (np<0) np+=fNladders;
+ if (nz>=fNdetectors) return -1;
+ if (nz<0) return -1;
#ifdef DEBUG
cout<<np<<' '<<nz<<endl;
}
Double_t
-AliITStrackerV2::AliITSlayer::GetThickness(Double_t y, Double_t z) const {
+AliITStrackerV2::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
+const {
//--------------------------------------------------------------------
//This function returns the layer thickness at this point (units X0)
//--------------------------------------------------------------------
Double_t d=0.0085;
+ x0=21.82;
if (43<fR&&fR<45) { //SSD2
- d=0.0036;
- if (TMath::Abs(y-0.00)>3.40) d+=0.0036;
- if (TMath::Abs(y-2.50)<0.10) d+=(0.02-0.0036);
- if (TMath::Abs(y+1.90)<0.10) d+=(0.02-0.0036);
+ Double_t dd=0.0034;
+ d=dd;
+ if (TMath::Abs(y-0.00)>3.40) d+=dd;
+ if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
+ if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
for (Int_t i=0; i<12; i++) {
- if (TMath::Abs(z-3.6*(i+0.5))<0.20) {d+=0.0036; break;}
- if (TMath::Abs(z+3.6*(i+0.5))<0.20) {d+=0.0036; break;}
- if (TMath::Abs(z-3.6*(i+0.929))<0.50) {d+=(0.02-0.0036); break;}
- if (TMath::Abs(z+3.6*(i+0.104))<0.50) {d+=(0.02-0.0036); break;}
+ if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
+ if (TMath::Abs(y-0.00)>3.40) d+=dd;
+ d+=0.0034;
+ break;
+ }
+ if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
+ if (TMath::Abs(y-0.00)>3.40) d+=dd;
+ d+=0.0034;
+ break;
+ }
+ if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
+ if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
}
} else
if (37<fR&&fR<41) { //SSD1
- d=0.0036;
- if (TMath::Abs(y-0.00)>3.40) d+=0.0036;
- if (TMath::Abs(y-2.20)<0.10) d+=(0.02-0.0036);
- if (TMath::Abs(y+2.20)<0.10) d+=(0.02-0.0036);
+ Double_t dd=0.0034;
+ d=dd;
+ if (TMath::Abs(y-0.00)>3.40) d+=dd;
+ if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
+ if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
for (Int_t i=0; i<11; i++) {
- if (TMath::Abs(z-3.6*i)<0.20) {d+=0.0036; break;}
- if (TMath::Abs(z+3.6*i)<0.20) {d+=0.0036; break;}
- if (TMath::Abs(z-3.6*(i+0.54))<0.50) {d+=(0.02-0.0036); break;}
- if (TMath::Abs(z+3.6*(i+0.58))<0.50) {d+=(0.02-0.0036); break;}
+ if (TMath::Abs(z-3.9*i)<0.15) {
+ if (TMath::Abs(y-0.00)>3.40) d+=dd;
+ d+=dd;
+ break;
+ }
+ if (TMath::Abs(z+3.9*i)<0.15) {
+ if (TMath::Abs(y-0.00)>3.40) d+=dd;
+ d+=dd;
+ break;
+ }
+ if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
+ if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
}
} else
if (13<fR&&fR<26) { //SDD
- d=0.0034;
- if (TMath::Abs(y-0.00)>3.30) d+=0.0034;
- if (TMath::Abs(y-2.10)<0.20) d+=0.0034*3;
- if (TMath::Abs(y+2.10)<0.20) d+=0.0034*3;
- for (Int_t i=0; i<4; i++) {
- if (TMath::Abs(z-7.3*i)<0.60) {d+=0.0034; break;}
- if (TMath::Abs(z+7.3*i)<0.60) {d+=0.0034; break;}
+ Double_t dd=0.0033;
+ d=dd;
+ if (TMath::Abs(y-0.00)>3.30) d+=dd;
+
+ if (TMath::Abs(y-1.80)<0.55) {
+ d+=0.016;
+ for (Int_t j=0; j<20; j++) {
+ if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
+ if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
+ }
+ }
+ if (TMath::Abs(y+1.80)<0.55) {
+ d+=0.016;
+ for (Int_t j=0; j<20; j++) {
+ if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
+ if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
+ }
+ }
+
+ for (Int_t i=0; i<4; i++) {
+ if (TMath::Abs(z-7.3*i)<0.60) {
+ d+=dd;
+ if (TMath::Abs(y-0.00)>3.30) d+=dd;
+ break;
+ }
+ if (TMath::Abs(z+7.3*i)<0.60) {
+ d+=dd;
+ if (TMath::Abs(y-0.00)>3.30) d+=dd;
+ break;
+ }
}
} else
if (6<fR&&fR<8) { //SPD2
- d=0.0093;
- if (TMath::Abs(y-3.08)>0.45) d+=0.0064;
- if (TMath::Abs(y-3.03)<0.10) d+=0.0192;
+ 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;}
} else
if (3<fR&&fR<5) { //SPD1
- d=0.0093;
- if (TMath::Abs(y+0.21)>0.55) d+=0.0064;
- if (TMath::Abs(y+0.10)<0.10) d+=0.0192;
+ 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;}
}
- d+=0.002;
-
return d;
}
//--------------------------------------------------------------------
//Returns the thickness between the current layer and the vertex (units X0)
//--------------------------------------------------------------------
- Double_t d=0.1/65.19*1.848;
+ Double_t d=0.0028*3*3; //beam pipe
+ Double_t x0=0;
Double_t xn=fLayers[fI].GetR();
for (Int_t i=0; i<fI; i++) {
Double_t xi=fLayers[i].GetR();
- d+=fLayers[i].GetThickness(y,z)*xi*xi;
+ d+=fLayers[i].GetThickness(y,z,x0)*xi*xi;
}
if (fI>1) {
- Double_t xi=0.5*(fLayers[1].GetR()+fLayers[2].GetR());
- d+=0.011*xi*xi;
+ Double_t xi=9.;
+ d+=0.0097*xi*xi;
}
if (fI>3) {
Double_t xi=0.5*(fLayers[3].GetR()+fLayers[4].GetR());
- d+=0.0053*xi*xi;
+ d+=0.0034*xi*xi;
}
+
return d/(xn*xn);
}
-
-
Int_t AliITStrackerV2::AliITSlayer::InRoad() const {
//--------------------------------------------------------------------
// This function returns number of clusters within the "window"
return ncl;
}
-Bool_t AliITStrackerV2::RefitAt(Double_t x, AliITStrackV2 *t, Int_t *index) {
+Bool_t
+AliITStrackerV2::RefitAt(Double_t x,const AliITStrackV2 *s,AliITStrackV2 *ot) {
//--------------------------------------------------------------------
// This function refits a track at a given position
//--------------------------------------------------------------------
+ AliITStrackV2 save(*ot), *t=&save;
+ Int_t index[kMaxLayer];
+ Int_t k;
+ for (k=0; k<kMaxLayer; k++) index[k]=-1;
+ Int_t nc=t->GetNumberOfClusters();
+ for (k=0; k<nc; k++) {
+ Int_t idx=t->GetClusterIndex(k),nl=(idx&0xf0000000)>>28;
+ index[nl]=idx;
+ }
+ t->~AliITStrackV2(); new (t) AliITStrackV2(*s);
+
Int_t from, to, step;
if (x > t->GetX()) {
from=0; to=kMaxLayer;
{
Double_t hI=i-0.5*step;
- if (hI==1.5 || hI==3.5) {
+ if (TMath::Abs(hI-1.5)<0.01 || TMath::Abs(hI-3.5)<0.01) {
Double_t rs=0.5*(fLayers[i-step].GetR() + r);
- Double_t ds=0.011; if (hI==3.5) ds=0.0053;
- if (!t->PropagateTo(rs,ds)) {
+ 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;
}
}
}
+ // remember old position [SR, GSI 18.02.2003]
+ Double_t oldX=0., oldY=0., oldZ=0.;
+ if (t->IsStartedTimeIntegral() && step==1) {
+ t->GetGlobalXYZat(t->GetX(),oldX,oldY,oldZ);
+ }
+ //
+
Double_t x,y,z;
if (!t->GetGlobalXYZat(r,x,y,z)) {
return kFALSE;
if (chi2<maxchi2) { cl=c; maxchi2=chi2; }
else return kFALSE;
}
-
/*
if (cl==0)
if (t->GetNumberOfClusters()>2) {
}
}
*/
-
if (cl) {
if (!t->Update(cl,maxchi2,idx)) {
return kFALSE;
}
+ t->SetSampledEdx(cl->GetQ(),t->GetNumberOfClusters()-1);
}
{
- Double_t d=layer.GetThickness(t->GetY(),t->GetZ());
- t->CorrectForMaterial(-step*d);
+ Double_t x0;
+ Double_t d=layer.GetThickness(t->GetY(),t->GetZ(),x0);
+ t->CorrectForMaterial(-step*d,x0);
+ }
+
+ // track time update [SR, GSI 17.02.2003]
+ if (t->IsStartedTimeIntegral() && step==1) {
+ Double_t newX, newY, newZ;
+ t->GetGlobalXYZat(t->GetX(),newX,newY,newZ);
+ Double_t dL2 = (oldX-newX)*(oldX-newX) + (oldY-newY)*(oldY-newY) +
+ (oldZ-newZ)*(oldZ-newZ);
+ t->AddTimeStep(TMath::Sqrt(dL2));
}
+ //
}
if (!t->PropagateTo(x,0.,0.)) return kFALSE;
+ ot->~AliITStrackV2(); new (ot) AliITStrackV2(*t);
return kTRUE;
}
+void AliITStrackerV2::UseClusters(const AliKalmanTrack *t, Int_t from) const {
+ //--------------------------------------------------------------------
+ // This function marks clusters assigned to the track
+ //--------------------------------------------------------------------
+ AliTracker::UseClusters(t,from);
+ AliITSclusterV2 *c=(AliITSclusterV2 *)GetCluster(t->GetClusterIndex(0));
+ //if (c->GetQ()>2) c->Use();
+ if (c->GetSigmaZ2()>0.1) c->Use();
+ c=(AliITSclusterV2 *)GetCluster(t->GetClusterIndex(1));
+ //if (c->GetQ()>2) c->Use();
+ if (c->GetSigmaZ2()>0.1) c->Use();
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff