* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.38 2003/10/17 12:01:16 kowal2
-Removed compiler warning.
-
-Revision 1.37 2003/07/22 15:56:14 hristov
-Implementing ESD functionality in the NewIO (Yu.Belikov)
-
-Revision 1.35.2.3 2003/07/15 09:58:03 hristov
-Corrected back-propagation (Yu.Belikov)
-
-Revision 1.35.2.2 2003/07/14 09:19:33 hristov
-TOF included in the combined PID (Yu.Belikov)
-
-Revision 1.35.2.1 2003/07/11 10:53:01 hristov
-Inward refit for TPC and TRD in the ESD schema (T.Kuhr)
-
-Revision 1.35 2003/05/23 10:08:51 hristov
-SetLabel replaced by SetNumber (Yu.Belikov)
-
-Revision 1.34 2003/05/22 13:57:48 hristov
-First implementation of ESD classes (Yu.Belikov)
-
-Revision 1.32 2003/04/10 10:36:54 hristov
-Code for unified TPC/TRD tracking (S.Radomski)
-
-Revision 1.31 2003/03/19 17:14:11 hristov
-Load/UnloadClusters added to the base class and the derived classes changed correspondingly. Possibility to give 2 input files for ITS and TPC tracks in PropagateBack. TRD tracker uses fEventN from the base class (T.Kuhr)
-
-Revision 1.30 2003/02/28 16:13:32 hristov
-Typos corrected
-
-Revision 1.29 2003/02/28 15:18:16 hristov
-Corrections suggested by J.Chudoba
-
-Revision 1.28 2003/02/27 16:15:52 hristov
-Code for inward refitting (S.Radomski)
-
-Revision 1.27 2003/02/25 16:47:58 hristov
-allow back propagation for more than 1 event (J.Chudoba)
-
-Revision 1.26 2003/02/19 08:49:46 hristov
-Track time measurement (S.Radomski)
-
-Revision 1.25 2003/01/28 16:43:35 hristov
-Additional protection: to be discussed with the Root team (M.Ivanov)
-
-Revision 1.24 2002/11/19 16:13:24 hristov
-stdlib.h included to declare exit() on HP
-
-Revision 1.23 2002/11/19 11:50:08 hristov
-Removing CONTAINERS (Yu.Belikov)
-
-Revision 1.19 2002/07/19 07:31:40 kowal2
-Improvement in tracking by J. Belikov
-
-Revision 1.18 2002/05/13 07:33:52 kowal2
-Added protection in Int_t AliTPCtracker::AliTPCRow::Find(Double_t y) const
-in the case of defined region of interests.
-
-Revision 1.17 2002/03/18 17:59:13 kowal2
-Chnges in the pad geometry - 3 pad lengths introduced.
-
-Revision 1.16 2001/11/08 16:39:03 hristov
-Additional protection (M.Masera)
-
-Revision 1.15 2001/11/08 16:36:33 hristov
-Updated V2 stream of tracking (Yu.Belikov). The new long waited features are: 1) Possibility to pass the primary vertex position to the trackers (both for the TPC and the ITS) 2) Possibility to specify the number of tracking passes together with applying (or not applying) the vertex constraint (ITS only) 3) Possibility to make some use of partial PID provided by the TPC when doing tracking in the ITS (ITS only) 4) V0 reconstruction with a helix minimisation of the DCA. (new macros: AliV0FindVertices.C and AliV0Comparison.C) 4a) ( Consequence of the 4) ) All the efficiencies and resolutions are from now on calculated including *secondary*particles* too. (Don't be surprised by the drop in efficiency etc)
-
-Revision 1.14 2001/10/21 19:04:55 hristov
-Several patches were done to adapt the barel reconstruction to the multi-event case. Some memory leaks were corrected. (Yu.Belikov)
-
-Revision 1.13 2001/07/23 12:01:30 hristov
-Initialisation added
-
-Revision 1.12 2001/07/20 14:32:44 kowal2
-Processing of many events possible now
-
-Revision 1.11 2001/05/23 08:50:10 hristov
-Weird inline removed
-
-Revision 1.10 2001/05/16 14:57:25 alibrary
-New files for folders and Stack
-
-Revision 1.9 2001/05/11 07:16:56 hristov
-Fix needed on Sun and Alpha
-
-Revision 1.8 2001/05/08 15:00:15 hristov
-Corrections for tracking in arbitrary magnenetic field. Changes towards a concept of global Alice track. Back propagation of reconstructed tracks (Yu.Belikov)
-
-Revision 1.5 2000/12/20 07:51:59 kowal2
-Changes suggested by Alessandra and Paolo to avoid overlapped
-data fields in encapsulated classes.
-
-Revision 1.4 2000/11/02 07:27:16 kowal2
-code corrections
-
-Revision 1.2 2000/06/30 12:07:50 kowal2
-Updated from the TPC-PreRelease branch
-
-Revision 1.1.2.1 2000/06/25 08:53:55 kowal2
-Splitted from AliTPCtracking
-
-*/
+/* $Id$ */
//-------------------------------------------------------
// Implementation of the TPC tracker
#include <TError.h>
#include <TFile.h>
#include <TTree.h>
-#include <stdlib.h>
-#include "AliESD.h"
+#include "AliESDEvent.h"
+#include "AliESDtrack.h"
#include "AliTPCtracker.h"
#include "AliTPCcluster.h"
#include "AliTPCParam.h"
#include "AliClusters.h"
-extern Double_t SigmaY2(Double_t, Double_t, Double_t);
-extern Double_t SigmaZ2(Double_t, Double_t);
-
ClassImp(AliTPCtracker)
+//_____________________________________________________________________________
+AliTPCtracker::AliTPCtracker():
+ AliTracker(),
+ fkNIS(0),
+ fInnerSec(0),
+ fkNOS(0),
+ fOuterSec(0),
+ fN(0),
+ fSectors(0),
+ fParam(0),
+ fSeeds(0)
+{
+ //
+ // The default TPC tracker constructor
+ //
+}
+
//_____________________________________________________________________________
AliTPCtracker::AliTPCtracker(const AliTPCParam *par):
-AliTracker(), fkNIS(par->GetNInnerSector()/2), fkNOS(par->GetNOuterSector()/2)
+ AliTracker(),
+ fkNIS(par->GetNInnerSector()/2),
+ fInnerSec(new AliTPCSector[fkNIS]),
+ fkNOS(par->GetNOuterSector()/2),
+ fOuterSec(new AliTPCSector[fkNOS]),
+ fN(0),
+ fSectors(0),
+ fParam((AliTPCParam*) par),
+ fSeeds(0)
{
//---------------------------------------------------------------------
// The main TPC tracker constructor
//---------------------------------------------------------------------
- fInnerSec=new AliTPCSector[fkNIS];
- fOuterSec=new AliTPCSector[fkNOS];
Int_t i;
for (i=0; i<fkNIS; i++) fInnerSec[i].Setup(par,0);
for (i=0; i<fkNOS; i++) fOuterSec[i].Setup(par,1);
- fParam = (AliTPCParam*) par;
- fSeeds=0;
-
- // [SR 17.03.2003]
-
- fBarrelFile = 0;
- fBarrelTree = 0;
- fBarrelArray = 0;
- fBarrelTrack = 0;
-
}
//_____________________________________________________________________________
fSeeds->Delete();
delete fSeeds;
}
-
- // [SR, 01.04.2003]
- if (fBarrelFile) {
- fBarrelFile->Close();
- delete fBarrelFile;
- }
}
-//_____________________________________________________________________________
-
-void AliTPCtracker::SetBarrelTree(const char *mode) {
- //
- // Creates a tree for BarrelTracks
- // mode = "back" or "refit"
- //
- // [SR, 01.04.2003]
- //
-
- if (!IsStoringBarrel()) return;
-
- TDirectory *sav = gDirectory;
- if (!fBarrelFile) fBarrelFile = new TFile("AliBarrelTracks.root", "UPDATE");
-
- char buff[40];
- sprintf(buff, "BarrelTPC_%d_%s", GetEventNumber(), mode);
-
- fBarrelFile->cd();
- fBarrelTree = new TTree(buff, "Barrel TPC tracks");
-
- if (!fBarrelArray) fBarrelArray = new TClonesArray("AliBarrelTrack", 4);
- for(Int_t i=0; i<4; i++) new((*fBarrelArray)[i]) AliBarrelTrack();
-
- fBarrelTree->Branch("tracks", &fBarrelArray);
-
- sav->cd();
-}
-//_____________________________________________________________________________
-
-void AliTPCtracker::StoreBarrelTrack(AliTPCtrack *ps, Int_t refPlane, Int_t isIn) {
- //
- // Stores Track at a given reference plane
- //
- // refPlane: 1-4
- // isIn: 1 - backward, 2 - refit
- //
-
- if (!IsStoringBarrel()) return;
- if (refPlane < 0 || refPlane > 4) return;
- if (isIn > 2) return;
-
- static Int_t nClusters;
- static Int_t nWrong;
- static Double_t chi2;
- static Int_t index;
-
- Int_t newClusters, newWrong;
- Double_t newChi2;
-
- if ( (refPlane == 1 && isIn == kTrackBack) ||
- (refPlane == 4 && isIn == kTrackRefit) ) {
-
- fBarrelArray->Clear();
- nClusters = nWrong = 0;
- chi2 = 0.0;
- index = 0;
- }
-
- // propagate
- Double_t refX = 0;
- if (refPlane == 1) refX = fParam->GetInnerRadiusLow();
- if (refPlane == 2) refX = fParam->GetInnerRadiusUp();
- if (refPlane == 3) refX = fParam->GetOuterRadiusLow();
- if (refPlane == 4) refX = fParam->GetOuterRadiusUp();
-
- ps->PropagateTo(refX);
-
- fBarrelTrack = (AliBarrelTrack*)(*fBarrelArray)[index++];
- ps->GetBarrelTrack(fBarrelTrack);
-
- newClusters = ps->GetNumberOfClusters() - nClusters;
- newWrong = ps->GetNWrong() - nWrong;
- newChi2 = ps->GetChi2() - chi2;
-
- nClusters = ps->GetNumberOfClusters();
- nWrong = ps->GetNWrong();
- chi2 = ps->GetChi2();
-
- fBarrelTrack->SetNClusters(newClusters, newChi2);
- fBarrelTrack->SetNWrongClusters(newWrong);
- fBarrelTrack->SetRefPlane(refPlane, isIn);
-}
-
-
//_____________________________________________________________________________
Double_t f1(Double_t x1,Double_t y1,
Double_t x2,Double_t y2,
Int_t nir=fInnerSec->GetNRows(), nor=fOuterSec->GetNRows();
Int_t id=carray.GetID();
if ((id<0) || (id>2*(fkNIS*nir + fkNOS*nor))) {
- Error("LoadClusters","Wrong index !");
- exit(1);
+ Fatal("LoadClusters","Wrong index !");
}
Int_t outindex = 2*fkNIS*nir;
if (id<outindex) {
UInt_t index=0;
Double_t maxchi2=kMaxCHI2;
const AliTPCRow &krow=fSectors[s][nr];
- Double_t pt=t.GetConvConst()/(100/0.299792458/0.2)/t.Get1Pt();
- Double_t sy2=SigmaY2(t.GetX(),t.GetTgl(),pt);
- Double_t sz2=SigmaZ2(t.GetX(),t.GetTgl());
+ Double_t pt=t.GetSignedPt();
+ Double_t sy2=AliTPCcluster::SigmaY2(t.GetX(),t.GetTgl(),pt);
+ Double_t sz2=AliTPCcluster::SigmaZ2(t.GetX(),t.GetTgl());
Double_t road=4.*sqrt(t.GetSigmaY2() + sy2), y=t.GetY(), z=t.GetZ();
if (road>kMaxROAD) {
// loop over rows
Int_t nRows = fSectors->GetNRows();
- for (Int_t iRow = nRows; iRow >= 0; iRow--) {
+ for (Int_t iRow = nRows-1; iRow >= 0; iRow--) {
Double_t x = fSectors->GetX(iRow);
if (!seed->PropagateTo(x)) return 0;
Int_t s=Int_t(alpha/fSectors->GetAlpha())%fN;
Int_t idx=-1, sec=-1, row=-1;
- Int_t nc=seed.GetNumber();
+ Int_t nc=track.GetNumberOfClusters();
if (nc--) {
idx=track.GetClusterIndex(nc);
Int_t nr=fSectors->GetNRows();
for (Int_t i=0; i<nr; i++) {
Double_t x=fSectors->GetX(i), ymax=fSectors->GetMaxY(i);
- Double_t y=seed.GetYat(x);
+ Double_t y;
+ if (!seed.GetYAt(x,GetBz(),y)) return 0;
if (y > ymax) {
s = (s+1) % fN;
AliTPCcluster *cl=0;
Int_t index=0;
Double_t maxchi2=kMaxCHI2;
- Double_t pt=seed.GetConvConst()/(100/0.299792458/0.2)/seed.Get1Pt();
- Double_t sy2=SigmaY2(seed.GetX(),seed.GetTgl(),pt);
- Double_t sz2=SigmaZ2(seed.GetX(),seed.GetTgl());
+ Double_t pt=seed.GetSignedPt();
+ Double_t sy2=AliTPCcluster::SigmaY2(seed.GetX(),seed.GetTgl(),pt);
+ Double_t sz2=AliTPCcluster::SigmaZ2(seed.GetX(),seed.GetTgl());
Double_t road=4.*sqrt(seed.GetSigmaY2() + sy2), z=seed.GetZ();
if (road>kMaxROAD) {
Warning("FollowBackProlongation","Too broad road !");
}
- seed.SetNumber(nc);
-
return 1;
}
c[13]=f30*sy1*f40+f32*sy2*f42;
c[14]=f40*sy1*f40+f42*sy2*f42+f43*sy3*f43;
- UInt_t index=kr1.GetIndex(is);
- AliTPCseed *track=new AliTPCseed(index, x, c, x1, ns*alpha+shift);
+ Int_t index=kr1.GetIndex(is);
+ AliTPCseed *track=new AliTPCseed(x1, ns*alpha+shift, x, c, index);
Float_t l=fSectors->GetPadPitchWidth();
track->SetSampledEdx(kr1[is]->GetQ()/l,0);
Int_t n=(Int_t)seedTree->GetEntries();
for (Int_t i=0; i<n; i++) {
seedTree->GetEvent(i);
- fSeeds->AddLast(new AliTPCseed(*seed,seed->GetAlpha()));
+ seed->ResetClusters();
+ fSeeds->AddLast(new AliTPCseed(*seed));
}
delete seed;
}
//_____________________________________________________________________________
-Int_t AliTPCtracker::Clusters2Tracks(AliESD *event) {
+Int_t AliTPCtracker::Clusters2Tracks(AliESDEvent *event) {
//-----------------------------------------------------------------
// This is a track finder.
// The clusters must be already loaded !
}
//_____________________________________________________________________________
-Int_t AliTPCtracker::Clusters2Tracks(TTree *cTree, TTree *tTree) {
- //-----------------------------------------------------------------
- // This is a track finder.
- //-----------------------------------------------------------------
- if (LoadClusters(cTree)) {
- Error("Clusters2Tracks","Problem with loading the clusters...");
- return 1;
- }
-
- AliTPCtrack *iotrack=0;
- TBranch *branch=tTree->GetBranch("tracks");
- if (!branch) tTree->Branch("tracks","AliTPCtrack",&iotrack,32000,3);
- else branch->SetAddress(&iotrack);
-
- //find track seeds
- Int_t nup=fOuterSec->GetNRows(), nlow=fInnerSec->GetNRows();
- Int_t nrows=nlow+nup;
- if (fSeeds==0) {
- Int_t gap=Int_t(0.125*nrows), shift=Int_t(0.5*gap);
- fSectors=fOuterSec; fN=fkNOS;
- fSeeds=new TObjArray(15000);
- MakeSeeds(nup-1, nup-1-gap);
- MakeSeeds(nup-1-shift, nup-1-shift-gap);
- }
- fSeeds->Sort();
-
- Int_t found=0;
- Int_t nseed=fSeeds->GetEntriesFast();
-
- for (Int_t i=0; i<nseed; i++) {
- //tracking in the outer sectors
- fSectors=fOuterSec; fN=fkNOS;
-
- AliTPCseed *pt=(AliTPCseed*)fSeeds->UncheckedAt(i), &t=*pt;
- if (!FollowProlongation(t)) {
- delete fSeeds->RemoveAt(i);
- continue;
- }
-
- //tracking in the inner sectors
- fSectors=fInnerSec; fN=fkNIS;
-
- Double_t alpha=t.GetAlpha() - fInnerSec->GetAlphaShift();
- if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi();
- if (alpha < 0. ) alpha += 2.*TMath::Pi();
- Int_t ns=Int_t(alpha/fInnerSec->GetAlpha())%fkNIS;
-
- alpha=ns*fInnerSec->GetAlpha()+fInnerSec->GetAlphaShift()-t.GetAlpha();
-
- if (t.Rotate(alpha)) {
- if (FollowProlongation(t)) {
- if (t.GetNumberOfClusters() >= Int_t(0.4*nrows)) {
- t.CookdEdx();
- CookLabel(pt,0.1); //For comparison only
- pt->PropagateTo(fParam->GetInnerRadiusLow());
- iotrack=pt;
- tTree->Fill();
- UseClusters(&t);
- found++;
- }
- }
- }
- delete fSeeds->RemoveAt(i);
- }
-
- Info("Clusters2Tracks","Number of found tracks : %d",found);
-
- UnloadClusters();
-
- fSeeds->Clear(); delete fSeeds; fSeeds=0;
-
- return 0;
-}
-
-//_____________________________________________________________________________
-Int_t AliTPCtracker::RefitInward(AliESD* event) {
+Int_t AliTPCtracker::RefitInward(AliESDEvent* event) {
//
// The function propagates tracks throught TPC inward
// using already associated clusters.
AliESDtrack* track = event->GetTrack(i);
ULong_t status = track->GetStatus();
+ if ( (status & AliESDtrack::kTPCrefit) != 0 ) continue;
if ( (status & AliESDtrack::kTPCout ) == 0 ) continue;
- if ( (status & AliESDtrack::kTPCrefit) != 0 ) continue;
-
+
+ if ( (status & AliESDtrack::kTRDout ) != 0 )
+ if ( (status & AliESDtrack::kTRDrefit ) == 0 ) continue;
+
AliTPCtrack* tpcTrack = new AliTPCtrack(*track);
- AliTPCseed* seed = new AliTPCseed(*tpcTrack, tpcTrack->GetAlpha());
+ AliTPCseed* seed=new AliTPCseed(*tpcTrack); seed->ResetClusters();
+
+ if ( (status & AliESDtrack::kTRDrefit) == 0 ) seed->ResetCovariance(10.);
fSectors = fOuterSec;
return 0;
}
-//_____________________________________________________________________________
-Int_t AliTPCtracker::RefitInward(TTree */*in*/, TTree */*out*/) {
- //
- // The function propagates tracks throught TPC inward
- // using already associated clusters.
- //
- Error("RefitInward","This method is not converted to NewIO yet\n");
- return 1;
- /*
- if (!inSeeds->IsOpen()) {
- cout << "Input File with seeds not open !\n" << endl;
- return 1;
- }
-
- if (!inTracks->IsOpen()) {
- cout << "Input File not open !\n" << endl;
- return 2;
- }
-
- if (!outTracks->IsOpen()) {
- cout << "Output File not open !\n" << endl;
- return 3;
- }
-
- TDirectory *savedir = gDirectory;
- LoadClusters();
-
- // Connect to input seeds tree
- inSeeds->cd();
- char tname[100];
- sprintf(tname, "seedTRDtoTPC_%d", GetEventNumber());
- TTree *seedsTree = (TTree*)inSeeds->Get(tname);
- TBranch *inSeedBranch = seedsTree->GetBranch("tracks");
- AliTPCtrack *inSeedTrack = 0;
- inSeedBranch->SetAddress(&inSeedTrack);
-
- Int_t nSeeds = (Int_t)seedsTree->GetEntries();
-
- // Connect to input tree
- inTracks->cd();
- sprintf(tname,"TreeT_TPC_%d",GetEventNumber());
-// sprintf(tname,"seedsTPCtoTRD_%d",GetEventNumber());
- TTree *inputTree = (TTree*)inTracks->Get(tname);
- TBranch *inBranch = inputTree->GetBranch("tracks");
- AliTPCtrack *inTrack = 0;
- inBranch->SetAddress(&inTrack);
-
- Int_t nTracks = (Int_t)inputTree->GetEntries();
-
- // Create output tree
- outTracks->cd();
- AliTPCtrack *outTrack = new AliTPCtrack();
- sprintf(tname, "tracksTPC_%d", GetEventNumber());
- TTree *outputTree = new TTree(tname,"Refited TPC tracks");
- outputTree->Branch("tracks", "AliTPCtrack", &outTrack, 32000, 3);
-
- Int_t nRefited = 0;
-
- // create table of track labels
- Int_t* inLab = new Int_t[nTracks];
- for (Int_t i = 0; i < nTracks; i++) inLab[i] = -1;
-
- // [SR, 01.04.2003] - Barrel tracks
- if (IsStoringBarrel()) SetBarrelTree("refit");
-
- for(Int_t t=0; t < nSeeds; t++) {
-
- seedsTree->GetEntry(t);
- // find TPC track for seed
- Int_t lab = TMath::Abs(inSeedTrack->GetLabel());
- for(Int_t i=0; i < nTracks; i++) {
- if (inLab[i] == lab) {
- inputTree->GetEntry(i);
- break;
- } else if (inLab[i] < 0) {
- inputTree->GetEntry(i);
- inLab[i] = TMath::Abs(inTrack->GetLabel());
- if (inLab[i] == lab) break;
- }
- }
- if (TMath::Abs(inTrack->GetLabel()) != lab) continue;
- AliTPCseed *seed = new AliTPCseed(*inSeedTrack, inTrack->GetAlpha());
- if (IsStoringBarrel()) StoreBarrelTrack(seed, 4, 2);
-
- fSectors = fOuterSec;
-
- Int_t res = FollowRefitInward(seed, inTrack);
- UseClusters(seed);
- Int_t nc = seed->GetNumberOfClusters();
-
- if (IsStoringBarrel()) StoreBarrelTrack(seed, 3, 2);
- if (IsStoringBarrel()) StoreBarrelTrack(seed, 2, 2);
-
- fSectors = fInnerSec;
-
- res = FollowRefitInward(seed, inTrack);
- UseClusters(seed, nc);
-
- if (IsStoringBarrel()) StoreBarrelTrack(seed, 1, 2);
-
- if (res) {
- seed->PropagateTo(fParam->GetInnerRadiusLow());
- outTrack = (AliTPCtrack*)seed;
- outTrack->SetLabel(inTrack->GetLabel());
- outTrack->SetdEdx(inTrack->GetdEdx());
- outputTree->Fill();
- nRefited++;
- }
-
- if (IsStoringBarrel()) fBarrelTree->Fill();
- delete seed;
- }
-
- cout << "Refitted " << nRefited << " tracks." << endl;
-
- outTracks->cd();
- outputTree->Write();
-
- delete[] inLab;
-
- // [SR, 01.04.2003]
- if (IsStoringBarrel()) {
- fBarrelFile->cd();
- fBarrelTree->Write();
- fBarrelFile->Flush();
-
- delete fBarrelArray;
- delete fBarrelTree;
- }
-
- if (inputTree) delete inputTree;
- if (outputTree) delete outputTree;
-
- savedir->cd();
- UnloadClusters();
-
- return 0;
- */
-}
-
-Int_t AliTPCtracker::PropagateBack(AliESD *event) {
+Int_t AliTPCtracker::PropagateBack(AliESDEvent *event) {
//-----------------------------------------------------------------
// This function propagates tracks back through the TPC.
// The clusters must be already loaded !
if ( (status & AliESDtrack::kTPCin ) == 0 ) continue;
if ( (status & AliESDtrack::kTPCout) != 0 ) continue;
+ if ( (status & AliESDtrack::kITSin) != 0 )
+ if ( (status & AliESDtrack::kITSout) == 0 ) continue;
const AliTPCtrack t(*esd);
- AliTPCseed s(t,t.GetAlpha());
+ AliTPCseed s(t); s.ResetClusters();
- if ( (status & AliESDtrack::kITSout) == 0 ) s.ResetCovariance();
-
- s.ResetNWrong();
- s.ResetNRotation();
-
- Int_t nc=t.GetNumberOfClusters();
- s.SetNumber(nc); //set number of the cluster to start with
+ if ( (status & AliESDtrack::kITSout) == 0 ) s.ResetCovariance(10.);
//inner sectors
fSectors=fInnerSec; fN=fkNIS;
//outer sectors
fSectors=fOuterSec; fN=fkNOS;
- nc=s.GetNumberOfClusters();
+ Int_t nc=s.GetNumberOfClusters();
alpha=s.GetAlpha() - fSectors->GetAlphaShift();
if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi();
return 0;
}
-//_____________________________________________________________________________
-Int_t AliTPCtracker::PropagateBack(TTree */*in*/, TTree */*out*/) {
- //-----------------------------------------------------------------
- // This function propagates tracks back through the TPC.
- //-----------------------------------------------------------------
- Error("PropagateBack","This method is not converted to NewIO yet\n");
- return 1;
- /*
- fSeeds=new TObjArray(15000);
-
- TFile *in=(TFile*)inp;
- TFile *in2=(TFile*)inp2;
- TDirectory *savedir=gDirectory;
-
- if (!in->IsOpen()) {
- cerr<<"AliTPCtracker::PropagateBack(): ";
- cerr<<"file with TPC (or back propagated ITS) tracks is not open !\n";
- return 1;
- }
-
- if (!out->IsOpen()) {
- cerr<<"AliTPCtracker::PropagateBack(): ";
- cerr<<"file for back propagated TPC tracks is not open !\n";
- return 2;
- }
-
- LoadClusters();
-
- in->cd();
- char tName[100];
- sprintf(tName,"TreeT_ITSb_%d",GetEventNumber());
- TTree *bckTree=(TTree*)in->Get(tName);
- if (!bckTree && inp2) bckTree=(TTree*)in2->Get(tName);
- if (!bckTree) {
- cerr<<"AliTPCtracker::PropagateBack() ";
- cerr<<"can't get a tree with back propagated ITS tracks !\n";
- //return 3;
- }
- AliTPCtrack *bckTrack=new AliTPCtrack;
- if (bckTree) bckTree->SetBranchAddress("tracks",&bckTrack);
-
- sprintf(tName,"TreeT_TPC_%d",GetEventNumber());
- TTree *tpcTree=(TTree*)in->Get(tName);
- if (!tpcTree) {
- cerr<<"AliTPCtracker::PropagateBack() ";
- cerr<<"can't get a tree with TPC tracks !\n";
- return 4;
- }
- AliTPCtrack *tpcTrack=new AliTPCtrack;
- tpcTree->SetBranchAddress("tracks",&tpcTrack);
-
- // [SR, 01.04.2003] - Barrel tracks
- if (IsStoringBarrel()) SetBarrelTree("back");
-
- // Prepare an array of tracks to be back propagated
- Int_t nup=fOuterSec->GetNRows(), nlow=fInnerSec->GetNRows();
- Int_t nrows=nlow+nup;
-
- //
- // Match ITS tracks with old TPC tracks
- // the tracks do not have to be sorted [SR, GSI, 18.02.2003]
- //
- // the algorithm is linear and uses LUT for sorting
- // cost of the algorithm: 2 * number of tracks
- //
-
- TObjArray tracks(15000);
- Int_t i=0;
- Int_t tpcN= (Int_t)tpcTree->GetEntries();
- Int_t bckN= (bckTree)? (Int_t)bckTree->GetEntries() : 0;
-
- // look up table
- const Int_t nLab = 200000; // limit on number of primaries (arbitrary)
- Int_t lut[nLab];
- for(Int_t i=0; i<nLab; i++) lut[i] = -1;
-
- if (bckTree) {
- for(Int_t i=0; i<bckN; i++) {
- bckTree->GetEvent(i);
- Int_t lab = TMath::Abs(bckTrack->GetLabel());
- if (lab < nLab) lut[lab] = i;
- else {
- cerr << "AliTPCtracker: The size of the LUT is too small\n";
- }
- }
- }
-
- for (Int_t i=0; i<tpcN; i++) {
- tpcTree->GetEvent(i);
- Double_t alpha=tpcTrack->GetAlpha();
-
- if (!bckTree) {
-
- // No ITS - use TPC track only
-
- tpcTrack->ResetCovariance();
- AliTPCseed * seed = new AliTPCseed(*tpcTrack, tpcTrack->GetAlpha());
-
- fSeeds->AddLast(seed);
- tracks.AddLast(new AliTPCtrack(*tpcTrack));
-
- } else {
-
- // with ITS
- // discard not prolongated tracks (to be discussed)
-
- Int_t lab = TMath::Abs(tpcTrack->GetLabel());
- if (lab > nLab || lut[lab] < 0) continue;
-
- bckTree->GetEvent(lut[lab]);
- bckTrack->Rotate(alpha-bckTrack->GetAlpha());
-
- fSeeds->AddLast(new AliTPCseed(*bckTrack,bckTrack->GetAlpha()));
- tracks.AddLast(new AliTPCtrack(*tpcTrack));
- }
- }
-
- // end of matching
-
- out->cd();
-
- // tree name seedsTPCtoTRD as expected by TRD and as
- // discussed and decided in Strasbourg (May 2002)
- // [SR, GSI, 18.02.2003]
-
- sprintf(tName,"seedsTPCtoTRD_%d",GetEventNumber());
- TTree backTree(tName,"Tree with back propagated TPC tracks");
-
- AliTPCtrack *otrack=0;
- backTree.Branch("tracks","AliTPCtrack",&otrack,32000,0);
-
- //
- Int_t nRefPlane;
- Int_t found=0;
- Int_t nseed=fSeeds->GetEntriesFast();
-
- // loop changed [SR, 01.04.2003]
-
- for (i=0; i<nseed; i++) {
-
- nRefPlane = 1;
- if (IsStoringBarrel()) fBarrelArray->Clear();
-
- AliTPCseed *ps=(AliTPCseed*)fSeeds->UncheckedAt(i), &s=*ps;
- const AliTPCtrack *pt=(AliTPCtrack*)tracks.UncheckedAt(i), &t=*pt;
-
- ps->ResetNWrong();
- ps->ResetNRotation();
-
- if (IsStoringBarrel()) StoreBarrelTrack(ps, 1, 1);
-
- // Load outer sectors
- fSectors=fInnerSec;
- fN=fkNIS;
-
- Int_t nc=t.GetNumberOfClusters();
- //s.SetLabel(nc-1); //set number of the cluster to start with
- s.SetNumber(nc);
-
- if (FollowBackProlongation(s,t)) UseClusters(&s);
- else {
- fSeeds->RemoveAt(i);
- continue;
- }
-
- if (IsStoringBarrel()) StoreBarrelTrack(ps, 2, 1);
- if (IsStoringBarrel()) StoreBarrelTrack(ps, 3, 1);
-
- // Load outer sectors
- fSectors=fOuterSec;
- fN=fkNOS;
-
- nc=s.GetNumberOfClusters();
-
- Double_t alpha=s.GetAlpha() - fSectors->GetAlphaShift();
- if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi();
- if (alpha < 0. ) alpha += 2.*TMath::Pi();
- Int_t ns=Int_t(alpha/fSectors->GetAlpha())%fN;
-
- alpha =ns*fSectors->GetAlpha() + fSectors->GetAlphaShift();
- alpha-=s.GetAlpha();
-
- if (s.Rotate(alpha)) {
- if (FollowBackProlongation(s,t)) {
- if (s.GetNumberOfClusters() >= Int_t(0.4*nrows)) {
- s.CookdEdx();
- s.SetLabel(t.GetLabel());
- UseClusters(&s,nc);
-
- // Propagate to outer reference plane for comparison reasons
- // reason for keeping fParam object [SR, GSI, 18.02.2003]
-
- ps->PropagateTo(fParam->GetOuterRadiusUp());
- otrack=ps;
- backTree.Fill();
-
- if (IsStoringBarrel()) StoreBarrelTrack(ps, 4, 1);
- cerr<<found++<<'\r';
- }
- }
- }
-
- if (IsStoringBarrel()) fBarrelTree->Fill();
- delete fSeeds->RemoveAt(i);
- }
-
-
- out->cd();
- backTree.Write();
-
- // [SR, 01.04.2003]
- if (IsStoringBarrel()) {
- fBarrelFile->cd();
- fBarrelTree->Write();
- fBarrelFile->Flush();
-
- delete fBarrelArray;
- delete fBarrelTree;
- }
-
- savedir->cd();
- cerr<<"Number of seeds: "<<nseed<<endl;
- cerr<<"Number of back propagated ITS tracks: "<<bckN<<endl;
- cerr<<"Number of back propagated TPC tracks: "<<found<<endl;
-
- delete bckTrack;
- delete tpcTrack;
-
- if (bckTree) delete bckTree; //Thanks to Mariana Bondila
- delete tpcTree; //Thanks to Mariana Bondila
-
- UnloadClusters();
-
- return 0;
- */
-}
-
//_________________________________________________________________________
AliCluster *AliTPCtracker::GetCluster(Int_t index) const {
//--------------------------------------------------------------------
dedx /= (nu-nl+1);
SetdEdx(dedx);
- //Very rough PID
- Double_t p=TMath::Sqrt((1.+ GetTgl()*GetTgl())/(Get1Pt()*Get1Pt()));
-
- Double_t log1=TMath::Log(p+0.45), log2=TMath::Log(p+0.12);
- if (p<0.6) {
- if (dedx < 34 + 30/(p+0.45)/(p+0.45) + 24*log1) {SetMass(0.13957); return;}
- if (dedx < 34 + 30/(p+0.12)/(p+0.12) + 24*log2) {SetMass(0.49368); return;}
- SetMass(0.93827); return;
- }
-
- if (p<1.2) {
- if (dedx < 34 + 30/(p+0.12)/(p+0.12) + 24*log2) {SetMass(0.13957); return;}
- SetMass(0.93827); return;
- }
-
- SetMass(0.13957); return;
-
+ return;
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff