/************************************************************************** * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * * * Author: The ALICE Off-line Project. * * Contributors are mentioned in the code where appropriate. * * * * Permission to use, copy, modify and distribute this software and its * * documentation strictly for non-commercial purposes is hereby granted * * without fee, provided that the above copyright notice appears in all * * copies and that both the copyright notice and this permission notice * * appear in the supporting documentation. The authors make no claims * * about the suitability of this software for any purpose. It is * * provided "as is" without express or implied warranty. * **************************************************************************/ /* $Id$ */ /////////////////////////////////////////////////////////////////////////////// // // // The standard TRD tracker // // // /////////////////////////////////////////////////////////////////////////////// #include #include #include #include #include #include "AliTRDgeometry.h" #include "AliTRDparameter.h" #include "AliTRDgeometryHole.h" #include "AliTRDcluster.h" #include "AliTRDtrack.h" #include "AliBarrelTrack.h" #include "AliESD.h" #include "AliTRDtracker.h" ClassImp(AliTRDtracker) const Float_t AliTRDtracker::fgkSeedDepth = 0.5; const Float_t AliTRDtracker::fgkSeedStep = 0.10; const Float_t AliTRDtracker::fgkSeedGap = 0.25; const Float_t AliTRDtracker::fgkMaxSeedDeltaZ12 = 40.; const Float_t AliTRDtracker::fgkMaxSeedDeltaZ = 25.; const Float_t AliTRDtracker::fgkMaxSeedC = 0.0052; const Float_t AliTRDtracker::fgkMaxSeedTan = 1.2; const Float_t AliTRDtracker::fgkMaxSeedVertexZ = 150.; const Double_t AliTRDtracker::fgkSeedErrorSY = 0.2; const Double_t AliTRDtracker::fgkSeedErrorSY3 = 2.5; const Double_t AliTRDtracker::fgkSeedErrorSZ = 0.1; const Float_t AliTRDtracker::fgkMinClustersInSeed = 0.7; const Float_t AliTRDtracker::fgkMinClustersInTrack = 0.5; const Float_t AliTRDtracker::fgkMinFractionOfFoundClusters = 0.8; const Float_t AliTRDtracker::fgkSkipDepth = 0.3; const Float_t AliTRDtracker::fgkLabelFraction = 0.8; const Float_t AliTRDtracker::fgkWideRoad = 20.; const Double_t AliTRDtracker::fgkMaxChi2 = 12.; const Int_t AliTRDtracker::fgkFirstPlane = 5; const Int_t AliTRDtracker::fgkLastPlane = 17; //____________________________________________________________________ AliTRDtracker::AliTRDtracker():AliTracker(), fGeom(0), fPar(0), fNclusters(0), fClusters(0), fNseeds(0), fSeeds(0), fNtracks(0), fTracks(0), fSY2corr(0), fSZ2corr(0), fTimeBinsPerPlane(0), fMaxGap(0), fVocal(kFALSE), fAddTRDseeds(kFALSE), fNoTilt(kFALSE) { // Default constructor for(Int_t i=0;iIsOpen()) { printf("AliTRDtracker::AliTRDtracker(): geometry file is not open!\n"); printf(" DETAIL TRD geometry and DEFAULT TRD parameter will be used\n"); } else { in->cd(); // in->ls(); fGeom = (AliTRDgeometry*) in->Get("TRDgeometry"); fPar = (AliTRDparameter*) in->Get("TRDparameter"); // fGeom->Dump(); } if(fGeom) { // fTzero = geo->GetT0(); printf("Found geometry version %d on file \n", fGeom->IsVersion()); } else { printf("AliTRDtracker::AliTRDtracker(): can't find TRD geometry!\n"); //printf("The DETAIL TRD geometry will be used\n"); //fGeom = new AliTRDgeometryDetail(); fGeom = new AliTRDgeometryHole(); fGeom->SetPHOShole(); fGeom->SetRICHhole(); } if (!fPar) { printf("AliTRDtracker::AliTRDtracker(): can't find TRD parameter!\n"); printf("The DEFAULT TRD parameter will be used\n"); fPar = new AliTRDparameter(); } fPar->ReInit(); savedir->cd(); // fGeom->SetT0(fTzero); fNclusters = 0; fClusters = new TObjArray(2000); fNseeds = 0; fSeeds = new TObjArray(2000); fNtracks = 0; fTracks = new TObjArray(1000); for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { Int_t trS = CookSectorIndex(geomS); fTrSec[trS] = new AliTRDtrackingSector(fGeom, geomS, fPar); for (Int_t icham=0;ichamIsHole(0,icham,geomS); } } Float_t tiltAngle = TMath::Abs(fPar->GetTiltingAngle()); if(tiltAngle < 0.1) { fNoTilt = kTRUE; } fSY2corr = 0.2; fSZ2corr = 120.; if(fNoTilt && (tiltAngle > 0.1)) fSY2corr = fSY2corr + tiltAngle * 0.05; // calculate max gap on track Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region Double_t dx = (Double_t) fPar->GetTimeBinSize(); Int_t tbAmp = fPar->GetTimeBefore(); Int_t maxAmp = (Int_t) ((dxAmp+0.000001)/dx); if(kTRUE) maxAmp = 0; // intentional until we change the parameter class Int_t tbDrift = fPar->GetTimeMax(); Int_t maxDrift = (Int_t) ((dxDrift+0.000001)/dx); tbDrift = TMath::Min(tbDrift,maxDrift); tbAmp = TMath::Min(tbAmp,maxAmp); fTimeBinsPerPlane = tbAmp + tbDrift; fMaxGap = (Int_t) (fTimeBinsPerPlane * fGeom->Nplan() * fgkSkipDepth); fVocal = kFALSE; // Barrel Tracks [SR, 03.04.2003] fBarrelFile = 0; fBarrelTree = 0; fBarrelArray = 0; fBarrelTrack = 0; savedir->cd(); } //___________________________________________________________________ AliTRDtracker::~AliTRDtracker() { // // Destructor of AliTRDtracker // if (fClusters) { fClusters->Delete(); delete fClusters; } if (fTracks) { fTracks->Delete(); delete fTracks; } if (fSeeds) { fSeeds->Delete(); delete fSeeds; } delete fGeom; delete fPar; for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { delete fTrSec[geomS]; } } //_____________________________________________________________________ void AliTRDtracker::SetBarrelTree(const char *mode) { // // // if (!IsStoringBarrel()) return; TDirectory *sav = gDirectory; if (!fBarrelFile) fBarrelFile = new TFile("AliBarrelTracks.root", "UPDATE"); char buff[40]; sprintf(buff, "BarrelTRD_%d_%s", GetEventNumber(), mode); fBarrelFile->cd(); fBarrelTree = new TTree(buff, "Barrel TPC tracks"); Int_t nRefs = fgkLastPlane - fgkFirstPlane + 1; if (!fBarrelArray) fBarrelArray = new TClonesArray("AliBarrelTrack", nRefs); for(Int_t i=0; iBranch("tracks", &fBarrelArray); sav->cd(); } //_____________________________________________________________________ void AliTRDtracker::StoreBarrelTrack(AliTRDtrack *ps, Int_t refPlane, Int_t isIn) { // // // if (!IsStoringBarrel()) return; static Int_t nClusters; static Int_t nWrong; static Double_t chi2; static Int_t index; static Bool_t wasLast = kTRUE; Int_t newClusters, newWrong; Double_t newChi2; if (wasLast) { fBarrelArray->Clear(); nClusters = nWrong = 0; chi2 = 0.0; index = 0; wasLast = kFALSE; } 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(); if (refPlane != fgkLastPlane) { fBarrelTrack->SetNClusters(newClusters, newChi2); fBarrelTrack->SetNWrongClusters(newWrong); } else { wasLast = kTRUE; } fBarrelTrack->SetRefPlane(refPlane, isIn); } //_____________________________________________________________________ Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track) { // // Rotates the track when necessary // Double_t alpha = AliTRDgeometry::GetAlpha(); Double_t y = track->GetY(); Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha); //Int_t ns = AliTRDgeometry::kNsect; //Int_t s=Int_t(track->GetAlpha()/alpha)%ns; if (y > ymax) { //s = (s+1) % ns; if (!track->Rotate(alpha)) return kFALSE; } else if (y <-ymax) { //s = (s-1+ns) % ns; if (!track->Rotate(-alpha)) return kFALSE; } return kTRUE; } //_____________________________________________________________________ inline Double_t f1trd(Double_t x1,Double_t y1, Double_t x2,Double_t y2, Double_t x3,Double_t y3) { // // Initial approximation of the track curvature // Double_t d=(x2-x1)*(y3-y2)-(x3-x2)*(y2-y1); Double_t a=0.5*((y3-y2)*(y2*y2-y1*y1+x2*x2-x1*x1)- (y2-y1)*(y3*y3-y2*y2+x3*x3-x2*x2)); Double_t b=0.5*((x2-x1)*(y3*y3-y2*y2+x3*x3-x2*x2)- (x3-x2)*(y2*y2-y1*y1+x2*x2-x1*x1)); Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b); return -xr*yr/sqrt(xr*xr+yr*yr); } //_____________________________________________________________________ inline Double_t f2trd(Double_t x1,Double_t y1, Double_t x2,Double_t y2, Double_t x3,Double_t y3) { // // Initial approximation of the track curvature times X coordinate // of the center of curvature // Double_t d=(x2-x1)*(y3-y2)-(x3-x2)*(y2-y1); Double_t a=0.5*((y3-y2)*(y2*y2-y1*y1+x2*x2-x1*x1)- (y2-y1)*(y3*y3-y2*y2+x3*x3-x2*x2)); Double_t b=0.5*((x2-x1)*(y3*y3-y2*y2+x3*x3-x2*x2)- (x3-x2)*(y2*y2-y1*y1+x2*x2-x1*x1)); Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b); return -a/(d*y1-b)*xr/sqrt(xr*xr+yr*yr); } //_____________________________________________________________________ inline Double_t f3trd(Double_t x1,Double_t y1, Double_t x2,Double_t y2, Double_t z1,Double_t z2) { // // Initial approximation of the tangent of the track dip angle // return (z1 - z2)/sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)); } AliTRDcluster * AliTRDtracker::GetCluster(AliTRDtrack * track, Int_t plane, Int_t timebin){ // //try to find cluster in the backup list // AliTRDcluster * cl =0; UInt_t *indexes = track->GetBackupIndexes(); for (UInt_t i=0;iUncheckedAt(indexes[i]); if (!cli) break; if (cli->GetLocalTimeBin()!=timebin) continue; Int_t iplane = fGeom->GetPlane(cli->GetDetector()); if (iplane==plane) { cl = cli; break; } } return cl; } Int_t AliTRDtracker::GetLastPlane(AliTRDtrack * track){ // //return last updated plane Int_t lastplane=0; UInt_t *indexes = track->GetBackupIndexes(); for (UInt_t i=0;iUncheckedAt(indexes[i]); if (!cli) break; Int_t iplane = fGeom->GetPlane(cli->GetDetector()); if (iplane>lastplane) { lastplane = iplane; } } return lastplane; } //___________________________________________________________________ Int_t AliTRDtracker::Clusters2Tracks(AliESD* event) { // // Finds tracks within the TRD. The ESD event is expected to contain seeds // at the outer part of the TRD. The seeds // are found within the TRD if fAddTRDseeds is TRUE. // The tracks are propagated to the innermost time bin // of the TRD and the ESD event is updated // Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); Float_t foundMin = fgkMinClustersInTrack * timeBins; Int_t nseed = 0; Int_t found = 0; Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); Int_t n = event->GetNumberOfTracks(); for (Int_t i=0; iGetTrack(i); ULong_t status=seed->GetStatus(); if ( (status & AliESDtrack::kTRDout ) == 0 ) continue; if ( (status & AliESDtrack::kTRDin) != 0 ) continue; nseed++; AliTRDtrack* seed2 = new AliTRDtrack(*seed); //seed2->ResetCovariance(); AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha()); AliTRDtrack &t=*pt; FollowProlongation(t, innerTB); if (t.GetNumberOfClusters() >= foundMin) { UseClusters(&t); CookLabel(pt, 1-fgkLabelFraction); // t.CookdEdx(); } found++; // cout<UpdateTrackParams(pt, AliESDtrack::kTRDin); } delete seed2; delete pt; } cout<<"Number of loaded seeds: "<GetNumberOfTimeBins(); Int_t nSteps = (Int_t) (fgkSeedDepth / fgkSeedStep); Int_t gap = (Int_t) (timeBins * fgkSeedGap); Int_t step = (Int_t) (timeBins * fgkSeedStep); // make a first turn with tight cut on initial curvature for(Int_t turn = 1; turn <= 2; turn++) { if(turn == 2) { nSteps = (Int_t) (fgkSeedDepth / (3*fgkSeedStep)); step = (Int_t) (timeBins * (3*fgkSeedStep)); } for(Int_t i=0; iGetEntriesFast(); MakeSeeds(inner, outer, turn); nseed=fSeeds->GetEntriesFast(); // printf("\n turn %d, step %d: number of seeds for TRD inward %d\n", // turn, i, nseed); for (Int_t i=0; iUncheckedAt(i), &t=*pt; FollowProlongation(t,innerTB); if (t.GetNumberOfClusters() >= foundMin) { UseClusters(&t); CookLabel(pt, 1-fgkLabelFraction); t.CookdEdx(); found++; // cout<AddTrack(&track); // track.SetTRDtrack(new AliTRDtrack(*pt)); } } delete fSeeds->RemoveAt(i); fNseeds--; } } } } cout<<"Total number of found tracks: "<GetNumberOfTracks(); for (Int_t i=0; iGetTrack(i); ULong_t status=seed->GetStatus(); if ( (status & AliESDtrack::kTPCout ) == 0 ) continue; if ( (status & AliESDtrack::kTRDout) != 0 ) continue; Int_t lbl = seed->GetLabel(); AliTRDtrack *track = new AliTRDtrack(*seed); track->SetSeedLabel(lbl); fNseeds++; Float_t p4 = track->GetC(); // Int_t expectedClr = FollowBackProlongation(*track); if (track->GetNumberOfClusters()SetSeedLabel(lbl); FollowBackProlongation(*track1); AliTRDtrack *track2= new AliTRDtrack(*seed); track->SetSeedLabel(lbl); FollowBackProlongation(*track2); delete track1; delete track2; } if (TMath::Abs(track->GetC()-p4)/TMath::Abs(p4)>0.2) { delete track; continue; //too big change of curvature - to be checked } Int_t foundClr = track->GetNumberOfClusters(); if (foundClr >= foundMin) { if(foundClr >= 2) { track->CookdEdx(); CookLabel(track, 1-fgkLabelFraction); UseClusters(track); } // Propagate to outer reference plane [SR, GSI, 18.02.2003] // track->PropagateTo(364.8); why? //seed->UpdateTrackParams(track, AliESDtrack::kTRDout); //found++; if (track->GetNCross()==0) seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); else{ if (track->GetBackupTrack()) seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup); } } //Propagation to the TOF (I.Belikov) if (track->GetStop()==kFALSE){ Double_t xtof=371.; Double_t c2=track->GetC()*xtof - track->GetEta(); if (TMath::Abs(c2)>=0.85) { delete track; continue; } Double_t xTOF0 = 371. ; PropagateToOuterPlane(*track,xTOF0); // Double_t ymax=xtof*TMath::Tan(0.5*AliTRDgeometry::GetAlpha()); Double_t y=track->GetYat(xtof); if (y > ymax) { if (!track->Rotate(AliTRDgeometry::GetAlpha())) { delete track; continue; } } else if (y <-ymax) { if (!track->Rotate(-AliTRDgeometry::GetAlpha())) { delete track; continue; } } if (track->PropagateTo(xtof)) { seed->UpdateTrackParams(track, AliESDtrack::kTRDout); seed->SetTRDtrack(new AliTRDtrack(*track)); if (track->GetNumberOfClusters()>foundMin) found++; } }else{ if (track->GetNumberOfClusters()>15&&track->GetNumberOfClusters()>0.5*expectedClr){ seed->UpdateTrackParams(track, AliESDtrack::kTRDout); //seed->SetStatus(AliESDtrack::kTRDStop); seed->SetTRDtrack(new AliTRDtrack(*track)); found++; } } delete track; //End of propagation to the TOF //if (foundClr>foundMin) // seed->UpdateTrackParams(track, AliESDtrack::kTRDout); } cerr<<"Number of seeds: "<Clear(); fNseeds=0; return 0; } //_____________________________________________________________________________ Int_t AliTRDtracker::RefitInward(AliESD* event) { // // Refits tracks within the TRD. The ESD event is expected to contain seeds // at the outer part of the TRD. // The tracks are propagated to the innermost time bin // of the TRD and the ESD event is updated // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch) // Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); Float_t foundMin = fgkMinClustersInTrack * timeBins; Int_t nseed = 0; Int_t found = 0; Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); Int_t n = event->GetNumberOfTracks(); for (Int_t i=0; iGetTrack(i); ULong_t status=seed->GetStatus(); if ( (status & AliESDtrack::kTRDout ) == 0 ) continue; if ( (status & AliESDtrack::kTRDin) != 0 ) continue; nseed++; AliTRDtrack* seed2 = new AliTRDtrack(*seed); seed2->ResetCovariance(5.); AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha()); UInt_t * indexes2 = seed2->GetIndexes(); UInt_t * indexes3 = pt->GetBackupIndexes(); for (Int_t i=0;i<200;i++) { if (indexes2[i]==0) break; indexes3[i] = indexes2[i]; } //AliTRDtrack *pt = seed2; AliTRDtrack &t=*pt; FollowProlongation(t, innerTB); /* if (t.GetNumberOfClusters()GetTRDclusters(indexes3)*0.5){ // debug - why we dont go back? AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha()); UInt_t * indexes2 = seed2->GetIndexes(); UInt_t * indexes3 = pt2->GetBackupIndexes(); for (Int_t i=0;i<200;i++) { if (indexes2[i]==0) break; indexes3[i] = indexes2[i]; } FollowProlongation(*pt2, innerTB); delete pt2; } */ if (t.GetNumberOfClusters() >= foundMin) { // UseClusters(&t); //CookLabel(pt, 1-fgkLabelFraction); // t.CookdEdx(); } found++; // cout<UpdateTrackParams(pt, AliESDtrack::kTRDrefit); }else{ //if not prolongation to TPC - propagate without update AliTRDtrack* seed2 = new AliTRDtrack(*seed); seed2->ResetCovariance(5.); AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha()); delete seed2; if (PropagateToTPC(*pt2)) seed->UpdateTrackParams(pt2, AliESDtrack::kTRDrefit); delete pt2; } delete seed2; delete pt; } cout<<"Number of loaded seeds: "<GetLayerNumber(t.GetX()); nr>rf; nr--) { y = t.GetY(); z = t.GetZ(); // first propagate to the inner surface of the current time bin fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; y = t.GetY(); z = t.GetZ(); if(!t.PropagateTo(x,radLength,rho)) break; y = t.GetY(); ymax = x*TMath::Tan(0.5*alpha); if (y > ymax) { s = (s+1) % ns; if (!t.Rotate(alpha)) break; if(!t.PropagateTo(x,radLength,rho)) break; } else if (y <-ymax) { s = (s-1+ns) % ns; if (!t.Rotate(-alpha)) break; if(!t.PropagateTo(x,radLength,rho)) break; } y = t.GetY(); z = t.GetZ(); // now propagate to the middle plane of the next time bin fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); x = fTrSec[s]->GetLayer(nr-1)->GetX(); y = t.GetY(); z = t.GetZ(); if(!t.PropagateTo(x,radLength,rho)) break; y = t.GetY(); ymax = x*TMath::Tan(0.5*alpha); if (y > ymax) { s = (s+1) % ns; if (!t.Rotate(alpha)) break; if(!t.PropagateTo(x,radLength,rho)) break; } else if (y <-ymax) { s = (s-1+ns) % ns; if (!t.Rotate(-alpha)) break; if(!t.PropagateTo(x,radLength,rho)) break; } if(lookForCluster) { expectedNumberOfClusters++; wIndex = (Float_t) t.GetLabel(); wTB = nr; AliTRDpropagationLayer& timeBin=*(fTrSec[s]->GetLayer(nr-1)); Double_t sy2=ExpectedSigmaY2(x,t.GetTgl(),t.GetPt()); Double_t sz2=ExpectedSigmaZ2(x,t.GetTgl()); Double_t road; if((t.GetSigmaY2() + sy2) > 0) road=10.*sqrt(t.GetSigmaY2() + sy2); else return expectedNumberOfClusters; wYrt = (Float_t) y; wZrt = (Float_t) z; wYwindow = (Float_t) road; t.GetPxPyPz(px,py,pz); wPx = (Float_t) px; wPy = (Float_t) py; wPz = (Float_t) pz; wC = (Float_t) t.GetC(); wSigmaC2 = (Float_t) t.GetSigmaC2(); wSigmaTgl2 = (Float_t) t.GetSigmaTgl2(); wSigmaY2 = (Float_t) t.GetSigmaY2(); wSigmaZ2 = (Float_t) t.GetSigmaZ2(); wChi2 = -1; AliTRDcluster *cl=0; UInt_t index=0; Double_t maxChi2=fgkMaxChi2; wYclosest = 12345678; wYcorrect = 12345678; wZclosest = 12345678; wZcorrect = 12345678; wZwindow = TMath::Sqrt(2.25 * 12 * sz2); // Find the closest correct cluster for debugging purposes if (timeBin) { Float_t minDY = 1000000; for (Int_t i=0; iGetLabel(0) != trackIndex) && (c->GetLabel(1) != trackIndex) && (c->GetLabel(2) != trackIndex)) continue; if(TMath::Abs(c->GetY() - y) > minDY) continue; minDY = TMath::Abs(c->GetY() - y); wYcorrect = c->GetY(); wZcorrect = c->GetZ(); Double_t h01 = GetTiltFactor(c); wChi2 = t.GetPredictedChi2(c, h01); } } // Now go for the real cluster search if (timeBin) { // //find cluster in history cl =0; AliTRDcluster * cl0 = timeBin[0]; if (!cl0) { continue; } Int_t plane = fGeom->GetPlane(cl0->GetDetector()); if (plane>lastplane) continue; Int_t timebin = cl0->GetLocalTimeBin(); AliTRDcluster * cl2= GetCluster(&t,plane, timebin); if (cl2) { cl =cl2; Double_t h01 = GetTiltFactor(cl); maxChi2=t.GetPredictedChi2(cl,h01); } if ((!cl) && road>fgkWideRoad) { //if (t.GetNumberOfClusters()>4) // cerr<GetY() > y+road) break; if (c->IsUsed() > 0) continue; if((c->GetZ()-z)*(c->GetZ()-z) > 3 * sz2) continue; Double_t h01 = GetTiltFactor(c); Double_t chi2=t.GetPredictedChi2(c,h01); if (chi2 > maxChi2) continue; maxChi2=chi2; cl=c; index=timeBin.GetIndex(i); } } if(!cl) { for (Int_t i=timeBin.Find(y-road); iGetY() > y+road) break; if (c->IsUsed() > 0) continue; if((c->GetZ()-z)*(c->GetZ()-z) > 12 * sz2) continue; Double_t h01 = GetTiltFactor(c); Double_t chi2=t.GetPredictedChi2(c, h01); if (chi2 > maxChi2) continue; maxChi2=chi2; cl=c; index=timeBin.GetIndex(i); } } if (cl) { wYclosest = cl->GetY(); wZclosest = cl->GetZ(); Double_t h01 = GetTiltFactor(cl); t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters()); //printf("Track position\t%f\t%f\t%f\n",t.GetX(),t.GetY(),t.GetZ()); //printf("Cluster position\t%d\t%f\t%f\n",cl->GetLocalTimeBin(),cl->GetY(),cl->GetZ()); Int_t det = cl->GetDetector(); Int_t plane = fGeom->GetPlane(det); if(!t.UpdateMI(cl,maxChi2,index,h01,plane)) { //if(!t.Update(cl,maxChi2,index,h01)) { //if(!tryAgain--) return 0; } else tryAgain=fMaxGap; } else { //if (tryAgain==0) break; tryAgain--; } /* if((((Int_t) wTB)%15 == 0) || (((Int_t) wTB)%15 == 14)) { printf(" %f", wIndex); //1 printf(" %f", wTB); //2 printf(" %f", wYrt); //3 printf(" %f", wYclosest); //4 printf(" %f", wYcorrect); //5 printf(" %f", wYwindow); //6 printf(" %f", wZrt); //7 printf(" %f", wZclosest); //8 printf(" %f", wZcorrect); //9 printf(" %f", wZwindow); //10 printf(" %f", wPx); //11 printf(" %f", wPy); //12 printf(" %f", wPz); //13 printf(" %f", wSigmaC2*1000000); //14 printf(" %f", wSigmaTgl2*1000); //15 printf(" %f", wSigmaY2); //16 // printf(" %f", wSigmaZ2); //17 printf(" %f", wChi2); //17 printf(" %f", wC); //18 printf("\n"); } */ } } } return expectedNumberOfClusters; } //___________________________________________________________________ Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack& t) { // Starting from current radial position of track this function // extrapolates the track up to outer timebin and in the sensitive // layers confirms prolongation if a close cluster is found. // Returns the number of clusters expected to be found in sensitive layers Float_t wIndex, wTB, wChi2; Float_t wYrt, wYclosest, wYcorrect, wYwindow; Float_t wZrt, wZclosest, wZcorrect, wZwindow; Float_t wPx, wPy, wPz, wC; Double_t px, py, pz; Float_t wSigmaC2, wSigmaTgl2, wSigmaY2, wSigmaZ2; Int_t trackIndex = t.GetLabel(); Int_t tryAgain=fMaxGap; Double_t alpha=t.GetAlpha(); TVector2::Phi_0_2pi(alpha); Int_t s; Int_t outerTB = fTrSec[0]->GetOuterTimeBin(); Double_t radLength, rho, x, dx, y, ymax = 0, z; Bool_t lookForCluster; Int_t expectedNumberOfClusters = 0; x = t.GetX(); alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning Int_t nRefPlane = fgkFirstPlane; Bool_t isNewLayer = kFALSE; Double_t chi2; Double_t minDY; Int_t zone =-10; Int_t nr; for (nr=fTrSec[0]->GetLayerNumber(t.GetX()); nrGetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); x = fTrSec[s]->GetLayer(nr)->GetX()+dx/2; y = t.GetY(); z = t.GetZ(); if(!t.PropagateTo(x,radLength,rho)) break; // if (!AdjustSector(&t)) break; // // MI -fix untill correct material desription will be implemented // Float_t angle = t.GetAlpha(); // MI - if rotation - we go through the material if (!AdjustSector(&t)) break; Int_t cross = kFALSE; if (TMath::Abs(angle - t.GetAlpha())>0.000001) cross = kTRUE; //better to stop track Int_t currentzone = fTrSec[s]->GetLayer(nr)->GetZone(z); if (currentzone==-10) cross = kTRUE; // we are in the frame if (currentzone>-10){ // layer knows where we are if (zone==-10) zone = currentzone; if (zone!=currentzone) cross=kTRUE; } if (cross) { t.IncCross(); if (t.GetNCross()==1) t.MakeBackupTrack(); if (t.GetNCross()>2) break; } // // s = t.GetSector(); if (!t.PropagateTo(x,radLength,rho)) break; y = t.GetY(); z = t.GetZ(); // Barrel Tracks [SR, 04.04.2003] s = t.GetSector(); if (fTrSec[s]->GetLayer(nr)->IsSensitive() != fTrSec[s]->GetLayer(nr+1)->IsSensitive() ) { // if (IsStoringBarrel()) StoreBarrelTrack(&t, nRefPlane++, kTrackBack); } if (fTrSec[s]->GetLayer(nr-1)->IsSensitive() && ! fTrSec[s]->GetLayer(nr)->IsSensitive()) { isNewLayer = kTRUE; } else {isNewLayer = kFALSE;} y = t.GetY(); z = t.GetZ(); // now propagate to the middle plane of the next time bin fTrSec[s]->GetLayer(nr+1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); x = fTrSec[s]->GetLayer(nr+1)->GetX(); if(!t.PropagateTo(x,radLength,rho)) break; if (!AdjustSector(&t)) break; s = t.GetSector(); if(!t.PropagateTo(x,radLength,rho)) break; y = t.GetY(); z = t.GetZ(); if(fVocal) printf("nr+1=%d, x %f, z %f, y %f, ymax %f\n",nr+1,x,z,y,ymax); // printf("label %d, pl %d, lookForCluster %d \n", // trackIndex, nr+1, lookForCluster); if(lookForCluster) { expectedNumberOfClusters++; wIndex = (Float_t) t.GetLabel(); wTB = fTrSec[s]->GetLayer(nr+1)->GetTimeBinIndex(); AliTRDpropagationLayer& timeBin=*(fTrSec[s]->GetLayer(nr+1)); Double_t sy2=ExpectedSigmaY2(t.GetX(),t.GetTgl(),t.GetPt()); Double_t sz2=ExpectedSigmaZ2(t.GetX(),t.GetTgl()); if((t.GetSigmaY2() + sy2) < 0) break; Double_t road = 10.*sqrt(t.GetSigmaY2() + sy2); Double_t y=t.GetY(), z=t.GetZ(); wYrt = (Float_t) y; wZrt = (Float_t) z; wYwindow = (Float_t) road; t.GetPxPyPz(px,py,pz); wPx = (Float_t) px; wPy = (Float_t) py; wPz = (Float_t) pz; wC = (Float_t) t.GetC(); wSigmaC2 = (Float_t) t.GetSigmaC2(); wSigmaTgl2 = (Float_t) t.GetSigmaTgl2(); wSigmaY2 = (Float_t) t.GetSigmaY2(); wSigmaZ2 = (Float_t) t.GetSigmaZ2(); wChi2 = -1; if (road>fgkWideRoad) { if (t.GetNumberOfClusters()>4) cerr< 0) maxChi2 = 3 * maxChi2; wYclosest = 12345678; wYcorrect = 12345678; wZclosest = 12345678; wZcorrect = 12345678; wZwindow = TMath::Sqrt(2.25 * 12 * sz2); // Find the closest correct cluster for debugging purposes if (timeBin) { minDY = 1000000; for (Int_t i=0; iGetLabel(0) != trackIndex) && (c->GetLabel(1) != trackIndex) && (c->GetLabel(2) != trackIndex)) continue; if(TMath::Abs(c->GetY() - y) > minDY) continue; //minDY = TMath::Abs(c->GetY() - y); minDY = c->GetY() - y; wYcorrect = c->GetY(); wZcorrect = c->GetZ(); Double_t h01 = GetTiltFactor(c); wChi2 = t.GetPredictedChi2(c, h01); } } // Now go for the real cluster search if (timeBin) { for (Int_t i=timeBin.Find(y-road); iGetY() > y+road) break; if (c->IsUsed() > 0) continue; if((c->GetZ()-z)*(c->GetZ()-z) > 3 * sz2) continue; Double_t h01 = GetTiltFactor(c); chi2=t.GetPredictedChi2(c,h01); if (chi2 > maxChi2) continue; maxChi2=chi2; cl=c; index=timeBin.GetIndex(i); //check is correct if((c->GetLabel(0) != trackIndex) && (c->GetLabel(1) != trackIndex) && (c->GetLabel(2) != trackIndex)) t.AddNWrong(); } if(!cl) { for (Int_t i=timeBin.Find(y-road); iGetY() > y+road) break; if (c->IsUsed() > 0) continue; if((c->GetZ()-z)*(c->GetZ()-z) > 2.25 * 12 * sz2) continue; Double_t h01 = GetTiltFactor(c); chi2=t.GetPredictedChi2(c,h01); if (chi2 > maxChi2) continue; maxChi2=chi2; cl=c; index=timeBin.GetIndex(i); } } if (cl) { wYclosest = cl->GetY(); wZclosest = cl->GetZ(); t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters()); Double_t h01 = GetTiltFactor(cl); Int_t det = cl->GetDetector(); Int_t plane = fGeom->GetPlane(det); if(!t.UpdateMI(cl,maxChi2,index,h01,plane)) { //if(!t.Update(cl,maxChi2,index,h01)) { if(!tryAgain--) return 0; } else tryAgain=fMaxGap; } else { if (tryAgain==0) break; tryAgain--; //if (minDY < 1000000 && isNewLayer) //cout << "\t" << nRefPlane << "\t" << "\t" << t.GetNRotate() << "\t" << // road << "\t" << minDY << "\t" << chi2 << "\t" << wChi2 << "\t" << maxChi2 << endl; } isNewLayer = kFALSE; /* if((((Int_t) wTB)%15 == 0) || (((Int_t) wTB)%15 == 14)) { printf(" %f", wIndex); //1 printf(" %f", wTB); //2 printf(" %f", wYrt); //3 printf(" %f", wYclosest); //4 printf(" %f", wYcorrect); //5 printf(" %f", wYwindow); //6 printf(" %f", wZrt); //7 printf(" %f", wZclosest); //8 printf(" %f", wZcorrect); //9 printf(" %f", wZwindow); //10 printf(" %f", wPx); //11 printf(" %f", wPy); //12 printf(" %f", wPz); //13 printf(" %f", wSigmaC2*1000000); //14 printf(" %f", wSigmaTgl2*1000); //15 printf(" %f", wSigmaY2); //16 // printf(" %f", wSigmaZ2); //17 printf(" %f", wChi2); //17 printf(" %f", wC); //18 printf("\n"); } */ } } } if (nrGetDetector(); Int_t localTimeBin=cl->GetLocalTimeBin(); Int_t sector=fGeom->GetSector(detector); Int_t plane=fGeom->GetPlane(detector); Int_t trackingSector = CookSectorIndex(sector); Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin); if(gtb < 0) continue; Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb); iCluster[layer] = index; } t.ResetClusters(); Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); Double_t alpha=t.GetAlpha(); alpha = TVector2::Phi_0_2pi(alpha); Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; Double_t radLength, rho, x, dx, y, ymax, z; Int_t expectedNumberOfClusters = 0; Bool_t lookForCluster; alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning for (Int_t nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr>rf; nr--) { y = t.GetY(); z = t.GetZ(); // first propagate to the inner surface of the current time bin fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; y = t.GetY(); z = t.GetZ(); if(!t.PropagateTo(x,radLength,rho)) break; y = t.GetY(); ymax = x*TMath::Tan(0.5*alpha); if (y > ymax) { s = (s+1) % ns; if (!t.Rotate(alpha)) break; if(!t.PropagateTo(x,radLength,rho)) break; } else if (y <-ymax) { s = (s-1+ns) % ns; if (!t.Rotate(-alpha)) break; if(!t.PropagateTo(x,radLength,rho)) break; } y = t.GetY(); z = t.GetZ(); // now propagate to the middle plane of the next time bin fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); x = fTrSec[s]->GetLayer(nr-1)->GetX(); y = t.GetY(); z = t.GetZ(); if(!t.PropagateTo(x,radLength,rho)) break; y = t.GetY(); ymax = x*TMath::Tan(0.5*alpha); if (y > ymax) { s = (s+1) % ns; if (!t.Rotate(alpha)) break; if(!t.PropagateTo(x,radLength,rho)) break; } else if (y <-ymax) { s = (s-1+ns) % ns; if (!t.Rotate(-alpha)) break; if(!t.PropagateTo(x,radLength,rho)) break; } if(lookForCluster) expectedNumberOfClusters++; // use assigned cluster if (!iCluster[nr-1]) continue; AliTRDcluster *cl=(AliTRDcluster*)GetCluster(iCluster[nr-1]); Double_t h01 = GetTiltFactor(cl); Double_t chi2=t.GetPredictedChi2(cl, h01); t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters()); t.Update(cl,chi2,iCluster[nr-1],h01); } return expectedNumberOfClusters; } //___________________________________________________________________ Int_t AliTRDtracker::PropagateToOuterPlane(AliTRDtrack& t, Double_t xToGo) { // Starting from current radial position of track this function // extrapolates the track up to radial position . // Returns 1 if track reaches the plane, and 0 otherwise Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); Double_t alpha=t.GetAlpha(); if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi(); if (alpha < 0. ) alpha += 2.*TMath::Pi(); Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; Bool_t lookForCluster; Double_t radLength, rho, x, dx, y, ymax, z; x = t.GetX(); alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning Int_t plToGo = fTrSec[0]->GetLayerNumber(xToGo); for (Int_t nr=fTrSec[0]->GetLayerNumber(x); nrGetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); x = fTrSec[s]->GetLayer(nr)->GetX()+dx/2; y = t.GetY(); z = t.GetZ(); if(!t.PropagateTo(x,radLength,rho)) return 0; y = t.GetY(); ymax = x*TMath::Tan(0.5*alpha); if (y > ymax) { s = (s+1) % ns; if (!t.Rotate(alpha)) return 0; } else if (y <-ymax) { s = (s-1+ns) % ns; if (!t.Rotate(-alpha)) return 0; } if(!t.PropagateTo(x,radLength,rho)) return 0; y = t.GetY(); z = t.GetZ(); // now propagate to the middle plane of the next time bin fTrSec[s]->GetLayer(nr+1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); x = fTrSec[s]->GetLayer(nr+1)->GetX(); y = t.GetY(); z = t.GetZ(); if(!t.PropagateTo(x,radLength,rho)) return 0; y = t.GetY(); ymax = x*TMath::Tan(0.5*alpha); if (y > ymax) { s = (s+1) % ns; if (!t.Rotate(alpha)) return 0; } else if (y <-ymax) { s = (s-1+ns) % ns; if (!t.Rotate(-alpha)) return 0; } if(!t.PropagateTo(x,radLength,rho)) return 0; } return 1; } //___________________________________________________________________ Int_t AliTRDtracker::PropagateToTPC(AliTRDtrack& t) { // Starting from current radial position of track this function // extrapolates the track up to radial position of the outermost // padrow of the TPC. // Returns 1 if track reaches the TPC, and 0 otherwise //Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); Double_t alpha=t.GetAlpha(); alpha = TVector2::Phi_0_2pi(alpha); Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; Bool_t lookForCluster; Double_t radLength, rho, x, dx, y, /*ymax,*/ z; x = t.GetX(); alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning Int_t plTPC = fTrSec[0]->GetLayerNumber(246.055); for (Int_t nr=fTrSec[0]->GetLayerNumber(x); nr>plTPC; nr--) { y = t.GetY(); z = t.GetZ(); // first propagate to the outer surface of the current time bin fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; if(!t.PropagateTo(x,radLength,rho)) return 0; AdjustSector(&t); if(!t.PropagateTo(x,radLength,rho)) return 0; y = t.GetY(); z = t.GetZ(); // now propagate to the middle plane of the next time bin fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); x = fTrSec[s]->GetLayer(nr-1)->GetX(); if(!t.PropagateTo(x,radLength,rho)) return 0; AdjustSector(&t); if(!t.PropagateTo(x,radLength,rho)) return 0; } return 1; } //_____________________________________________________________________________ Int_t AliTRDtracker::LoadClusters(TTree *cTree) { // Fills clusters into TRD tracking_sectors // Note that the numbering scheme for the TRD tracking_sectors // differs from that of TRD sectors if (ReadClusters(fClusters,cTree)) { Error("LoadClusters","Problem with reading the clusters !"); return 1; } Int_t ncl=fClusters->GetEntriesFast(); fNclusters=ncl; cout<<"\n LoadSectors: sorting "<UncheckedAt(ncl); Int_t detector=c->GetDetector(); Int_t localTimeBin=c->GetLocalTimeBin(); Int_t sector=fGeom->GetSector(detector); Int_t plane=fGeom->GetPlane(detector); Int_t trackingSector = CookSectorIndex(sector); if (c->GetLabel(0)>0){ Int_t chamber = fGeom->GetChamber(detector); fHoles[chamber][trackingSector]=kFALSE; } Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin); if(gtb < 0) continue; Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb); index=ncl; fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index); } // printf("\r\n"); // // /* for (Int_t isector=0;isector<18;isector++){ for (Int_t ichamber=0;ichamber<5;ichamber++) if (fHoles[ichamber][isector]!=fGeom->IsHole(0,ichamber,17-isector)) printf("Problem \t%d\t%d\t%d\t%d\n",isector,ichamber,fHoles[ichamber][isector], fGeom->IsHole(0,ichamber,17-isector)); } */ return 0; } //_____________________________________________________________________________ void AliTRDtracker::UnloadClusters() { // // Clears the arrays of clusters and tracks. Resets sectors and timebins // Int_t i, nentr; nentr = fClusters->GetEntriesFast(); for (i = 0; i < nentr; i++) delete fClusters->RemoveAt(i); fNclusters = 0; nentr = fSeeds->GetEntriesFast(); for (i = 0; i < nentr; i++) delete fSeeds->RemoveAt(i); nentr = fTracks->GetEntriesFast(); for (i = 0; i < nentr; i++) delete fTracks->RemoveAt(i); Int_t nsec = AliTRDgeometry::kNsect; for (i = 0; i < nsec; i++) { for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) { fTrSec[i]->GetLayer(pl)->Clear(); } } } //__________________________________________________________________________ void AliTRDtracker::MakeSeeds(Int_t inner, Int_t outer, Int_t turn) { // Creates track seeds using clusters in timeBins=i1,i2 if(turn > 2) { cerr<<"MakeSeeds: turn "<GetLayerNumber(inner); Int_t i1 = fTrSec[0]->GetLayerNumber(outer); Double_t x1 =fTrSec[0]->GetX(i1); Double_t xx2=fTrSec[0]->GetX(i2); for (Int_t ns=0; nsGetLayer(i2)); Int_t nl=(*fTrSec[(ns-1+maxSec)%maxSec]->GetLayer(i2)); Int_t nm=(*fTrSec[ns]->GetLayer(i2)); Int_t nu=(*fTrSec[(ns+1)%maxSec]->GetLayer(i2)); Int_t nu2=(*fTrSec[(ns+2)%maxSec]->GetLayer(i2)); AliTRDpropagationLayer& r1=*(fTrSec[ns]->GetLayer(i1)); for (Int_t is=0; is < r1; is++) { Double_t y1=r1[is]->GetY(), z1=r1[is]->GetZ(); for (Int_t js=0; js < nl2+nl+nm+nu+nu2; js++) { const AliTRDcluster *cl; Double_t x2, y2, z2; Double_t x3=0., y3=0.; if (jsGetLayer(i2)); cl=r2[js]; y2=cl->GetY(); z2=cl->GetZ(); x2= xx2*cs2+y2*sn2; y2=-xx2*sn2+y2*cs2; } else if (jsGetLayer(i2)); cl=r2[js-nl2]; y2=cl->GetY(); z2=cl->GetZ(); x2= xx2*cs+y2*sn; y2=-xx2*sn+y2*cs; } else if (jsGetLayer(i2)); cl=r2[js-nl2-nl]; x2=xx2; y2=cl->GetY(); z2=cl->GetZ(); } else if (jsGetLayer(i2)); cl=r2[js-nl2-nl-nm]; y2=cl->GetY(); z2=cl->GetZ(); x2=xx2*cs-y2*sn; y2=xx2*sn+y2*cs; } else { if(turn != 2) continue; AliTRDpropagationLayer& r2=*(fTrSec[(ns+2)%maxSec]->GetLayer(i2)); cl=r2[js-nl2-nl-nm-nu]; y2=cl->GetY(); z2=cl->GetZ(); x2=xx2*cs2-y2*sn2; y2=xx2*sn2+y2*cs2; } if(TMath::Abs(z1-z2) > fgkMaxSeedDeltaZ12) continue; Double_t zz=z1 - z1/x1*(x1-x2); if (TMath::Abs(zz-z2)>fgkMaxSeedDeltaZ) continue; Double_t d=(x2-x1)*(0.-y2)-(0.-x2)*(y2-y1); if (d==0.) {cerr<<"TRD MakeSeeds: Straight seed !\n"; continue;} x[0]=y1; x[1]=z1; x[4]=f1trd(x1,y1,x2,y2,x3,y3); if (TMath::Abs(x[4]) > fgkMaxSeedC) continue; x[2]=f2trd(x1,y1,x2,y2,x3,y3); if (TMath::Abs(x[4]*x1-x[2]) >= 0.99999) continue; x[3]=f3trd(x1,y1,x2,y2,z1,z2); if (TMath::Abs(x[3]) > fgkMaxSeedTan) continue; Double_t a=asin(x[2]); Double_t zv=z1 - x[3]/x[4]*(a+asin(x[4]*x1-x[2])); if (TMath::Abs(zv)>fgkMaxSeedVertexZ) continue; Double_t sy1=r1[is]->GetSigmaY2(), sz1=r1[is]->GetSigmaZ2(); Double_t sy2=cl->GetSigmaY2(), sz2=cl->GetSigmaZ2(); Double_t sy3=fgkSeedErrorSY3, sy=fgkSeedErrorSY, sz=fgkSeedErrorSZ; // Tilt changes Double_t h01 = GetTiltFactor(r1[is]); Double_t xuFactor = 100.; if(fNoTilt) { h01 = 0; xuFactor = 1; } sy1=sy1+sz1*h01*h01; Double_t syz=sz1*(-h01); // end of tilt changes Double_t f40=(f1trd(x1,y1+sy,x2,y2,x3,y3)-x[4])/sy; Double_t f42=(f1trd(x1,y1,x2,y2+sy,x3,y3)-x[4])/sy; Double_t f43=(f1trd(x1,y1,x2,y2,x3,y3+sy)-x[4])/sy; Double_t f20=(f2trd(x1,y1+sy,x2,y2,x3,y3)-x[2])/sy; Double_t f22=(f2trd(x1,y1,x2,y2+sy,x3,y3)-x[2])/sy; Double_t f23=(f2trd(x1,y1,x2,y2,x3,y3+sy)-x[2])/sy; Double_t f30=(f3trd(x1,y1+sy,x2,y2,z1,z2)-x[3])/sy; Double_t f31=(f3trd(x1,y1,x2,y2,z1+sz,z2)-x[3])/sz; Double_t f32=(f3trd(x1,y1,x2,y2+sy,z1,z2)-x[3])/sy; Double_t f34=(f3trd(x1,y1,x2,y2,z1,z2+sz)-x[3])/sz; c[0]=sy1; // c[1]=0.; c[2]=sz1; c[1]=syz; c[2]=sz1*xuFactor; c[3]=f20*sy1; c[4]=0.; c[5]=f20*sy1*f20+f22*sy2*f22+f23*sy3*f23; c[6]=f30*sy1; c[7]=f31*sz1; c[8]=f30*sy1*f20+f32*sy2*f22; c[9]=f30*sy1*f30+f31*sz1*f31+f32*sy2*f32+f34*sz2*f34; c[10]=f40*sy1; c[11]=0.; c[12]=f40*sy1*f20+f42*sy2*f22+f43*sy3*f23; c[13]=f30*sy1*f40+f32*sy2*f42; c[14]=f40*sy1*f40+f42*sy2*f42+f43*sy3*f43; UInt_t index=r1.GetIndex(is); AliTRDtrack *track=new AliTRDtrack(r1[is],index,x,c,x1,ns*alpha+shift); Int_t rc=FollowProlongation(*track, i2); if ((rc < 1) || (track->GetNumberOfClusters() < (outer-inner)*fgkMinClustersInSeed)) delete track; else { fSeeds->AddLast(track); fNseeds++; // cerr<<"\r found seed "<= 0) or AliTRDrecPoints (option < 0) // from the file. The names of the cluster tree and branches // should match the ones used in AliTRDclusterizer::WriteClusters() // TObjArray *clusterArray = new TObjArray(400); TBranch *branch=ClusterTree->GetBranch("TRDcluster"); if (!branch) { Error("ReadClusters","Can't get the branch !"); return 1; } branch->SetAddress(&clusterArray); Int_t nEntries = (Int_t) ClusterTree->GetEntries(); // printf("found %d entries in %s.\n",nEntries,ClusterTree->GetName()); // Loop through all entries in the tree Int_t nbytes = 0; AliTRDcluster *c = 0; // printf("\n"); for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) { // Import the tree nbytes += ClusterTree->GetEvent(iEntry); // Get the number of points in the detector Int_t nCluster = clusterArray->GetEntriesFast(); // printf("\r Read %d clusters from entry %d", nCluster, iEntry); // Loop through all TRD digits for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) { c = (AliTRDcluster*)clusterArray->UncheckedAt(iCluster); AliTRDcluster *co = new AliTRDcluster(*c); co->SetSigmaY2(c->GetSigmaY2() * fSY2corr); Int_t ltb = co->GetLocalTimeBin(); if(ltb == 19) co->SetSigmaZ2(c->GetSigmaZ2()); else if(fNoTilt) co->SetSigmaZ2(c->GetSigmaZ2() * fSZ2corr); array->AddLast(co); delete clusterArray->RemoveAt(iCluster); } } delete clusterArray; return 0; } //__________________________________________________________________ void AliTRDtracker::CookLabel(AliKalmanTrack* pt, Float_t wrong) const { // // This cooks a label. Mmmmh, smells good... // Int_t label=123456789, index, i, j; Int_t ncl=pt->GetNumberOfClusters(); const Int_t kRange = fTrSec[0]->GetOuterTimeBin()+1; Bool_t labelAdded; // Int_t s[kRange][2]; Int_t **s = new Int_t* [kRange]; for (i=0; iGetClusterIndex(i); AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); t0=c->GetLabel(0); t1=c->GetLabel(1); t2=c->GetLabel(2); } for (i=0; iGetClusterIndex(i); AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); for (Int_t k=0; k<3; k++) { label=c->GetLabel(k); labelAdded=kFALSE; j=0; if (label >= 0) { while ( (!labelAdded) && ( j < kRange ) ) { if (s[j][0]==label || s[j][1]==0) { s[j][0]=label; s[j][1]=s[j][1]+1; labelAdded=kTRUE; } j++; } } } } Int_t max=0; label = -123456789; for (i=0; imax) { max=s[i][1]; label=s[i][0]; } } for (i=0; i wrong) label=-label; pt->SetLabel(label); } //__________________________________________________________________ void AliTRDtracker::UseClusters(const AliKalmanTrack* t, Int_t from) const { // // Use clusters, but don't abuse them! // Int_t ncl=t->GetNumberOfClusters(); for (Int_t i=from; iGetClusterIndex(i); AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); c->Use(); } } //_____________________________________________________________________ Double_t AliTRDtracker::ExpectedSigmaY2(Double_t , Double_t , Double_t ) const { // Parametrised "expected" error of the cluster reconstruction in Y Double_t s = 0.08 * 0.08; return s; } //_____________________________________________________________________ Double_t AliTRDtracker::ExpectedSigmaZ2(Double_t , Double_t ) const { // Parametrised "expected" error of the cluster reconstruction in Z Double_t s = 9 * 9 /12.; return s; } //_____________________________________________________________________ Double_t AliTRDtracker::GetX(Int_t sector, Int_t plane, Int_t localTB) const { // // Returns radial position which corresponds to time bin // in tracking sector and plane // Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, localTB); Int_t pl = fTrSec[sector]->GetLayerNumber(index); return fTrSec[sector]->GetLayer(pl)->GetX(); } //_______________________________________________________ AliTRDtracker::AliTRDpropagationLayer::AliTRDpropagationLayer(Double_t x, Double_t dx, Double_t rho, Double_t radLength, Int_t tbIndex) { // // AliTRDpropagationLayer constructor // fN = 0; fX = x; fdX = dx; fRho = rho; fX0 = radLength; fClusters = NULL; fIndex = NULL; fTimeBinIndex = tbIndex; for(Int_t i=0; i < (Int_t) kZones; i++) { fZc[i]=0; fZmax[i] = 0; } fYmax = 0; if(fTimeBinIndex >= 0) { fClusters = new AliTRDcluster*[kMaxClusterPerTimeBin]; fIndex = new UInt_t[kMaxClusterPerTimeBin]; } for (Int_t i=0;i<5;i++) fIsHole[i] = kFALSE; fHole = kFALSE; fHoleZc = 0; fHoleZmax = 0; fHoleYc = 0; fHoleYmax = 0; fHoleRho = 0; fHoleX0 = 0; } //_______________________________________________________ void AliTRDtracker::AliTRDpropagationLayer::SetHole( Double_t Zmax, Double_t Ymax, Double_t rho, Double_t radLength, Double_t Yc, Double_t Zc) { // // Sets hole in the layer // fHole = kTRUE; fHoleZc = Zc; fHoleZmax = Zmax; fHoleYc = Yc; fHoleYmax = Ymax; fHoleRho = rho; fHoleX0 = radLength; } //_______________________________________________________ AliTRDtracker::AliTRDtrackingSector::AliTRDtrackingSector(AliTRDgeometry* geo, Int_t gs, AliTRDparameter* par) { // // AliTRDtrackingSector Constructor // fGeom = geo; fPar = par; fGeomSector = gs; fTzeroShift = 0.13; fN = 0; // // get holes description from geometry Bool_t holes[AliTRDgeometry::kNcham]; //printf("sector\t%d\t",gs); for (Int_t icham=0; ichamIsHole(0,icham,gs); //printf("%d",holes[icham]); } //printf("\n"); for(UInt_t i=0; i < kMaxTimeBinIndex; i++) fTimeBinIndex[i] = -1; AliTRDpropagationLayer* ppl; Double_t x, xin, xout, dx, rho, radLength; Int_t steps; // set time bins in the gas of the TPC xin = 246.055; xout = 254.055; steps = 20; dx = (xout-xin)/steps; rho = 0.9e-3; radLength = 28.94; for(Int_t i=0; iRmin(); // add layers between TPC and TRD (Air temporarily) xin = xout; xout = xtrd; steps = 50; dx = (xout - xin)/steps; rho = 1.2e-3; radLength = 36.66; for(Int_t i=0; iCroHght(); // Rohacell Double_t dxSpace = (Double_t) fGeom->Cspace(); // Spacing between planes Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region Double_t dxRad = (Double_t) fGeom->CraHght(); // Radiator Double_t dxTEC = dxRad + dxDrift + dxAmp + dxRo; Double_t dxPlane = dxTEC + dxSpace; Int_t tb, tbIndex; const Int_t kNchambers = AliTRDgeometry::Ncham(); Double_t ymax = 0; //, holeYmax = 0; Double_t ymaxsensitive=0; Double_t *zc = new Double_t[kNchambers]; Double_t *zmax = new Double_t[kNchambers]; Double_t *zmaxsensitive = new Double_t[kNchambers]; // Double_t holeZmax = 1000.; // the whole sector is missing for(Int_t plane = 0; plane < AliTRDgeometry::Nplan(); plane++) { // // Radiator xin = xtrd + plane * dxPlane; xout = xin + dxRad; steps = 12; dx = (xout - xin)/steps; rho = 0.074; radLength = 40.6; for(Int_t i=0; iGetChamberWidth(plane)/2.; ymaxsensitive = (fPar->GetColPadSize(plane)*fPar->GetColMax(plane)-4)/2.; for(Int_t ch = 0; ch < kNchambers; ch++) { zmax[ch] = fGeom->GetChamberLength(plane,ch)/2; Float_t pad = fPar->GetRowPadSize(plane,ch,0); Float_t row0 = fPar->GetRow0(plane,ch,0); Int_t nPads = fPar->GetRowMax(plane,ch,0); zmaxsensitive[ch] = Float_t(nPads)*pad/2.; // zc[ch] = (pad * nPads)/2 + row0 - pad/2; zc[ch] = (pad * nPads)/2 + row0; //zc[ch] = row0+zmax[ch]-AliTRDgeometry::RpadW(); } dx = fPar->GetTimeBinSize(); rho = 0.00295 * 0.85; radLength = 11.0; Double_t x0 = (Double_t) fPar->GetTime0(plane); Double_t xbottom = x0 - dxDrift; Double_t xtop = x0 + dxAmp; // // Amplification region steps = (Int_t) (dxAmp/dx); for(tb = 0; tb < steps; tb++) { x = x0 + tb * dx + dx/2; tbIndex = CookTimeBinIndex(plane, -tb-1); ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); ppl->SetYmax(ymax,ymaxsensitive); ppl->SetZ(zc, zmax, zmaxsensitive); ppl->SetHoles(holes); InsertLayer(ppl); } tbIndex = CookTimeBinIndex(plane, -steps); x = (x + dx/2 + xtop)/2; dx = 2*(xtop-x); ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); ppl->SetYmax(ymax,ymaxsensitive); ppl->SetZ(zc, zmax,zmaxsensitive); ppl->SetHoles(holes); InsertLayer(ppl); // Drift region dx = fPar->GetTimeBinSize(); steps = (Int_t) (dxDrift/dx); for(tb = 0; tb < steps; tb++) { x = x0 - tb * dx - dx/2; tbIndex = CookTimeBinIndex(plane, tb); ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); ppl->SetYmax(ymax,ymaxsensitive); ppl->SetZ(zc, zmax, zmaxsensitive); ppl->SetHoles(holes); InsertLayer(ppl); } tbIndex = CookTimeBinIndex(plane, steps); x = (x - dx/2 + xbottom)/2; dx = 2*(x-xbottom); ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); ppl->SetYmax(ymax,ymaxsensitive); ppl->SetZ(zc, zmax, zmaxsensitive); ppl->SetHoles(holes); InsertLayer(ppl); // Pad Plane xin = xtop; dx = 0.025; xout = xin + dx; rho = 1.7; radLength = 33.0; ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); ppl->SetYmax(ymax,ymaxsensitive); ppl->SetZ(zc, zmax,zmax); ppl->SetHoles(holes); InsertLayer(ppl); // Rohacell xin = xout; xout = xtrd + (plane + 1) * dxPlane - dxSpace; steps = 5; dx = (xout - xin)/steps; rho = 0.074; radLength = 40.6; for(Int_t i=0; iSetYmax(ymax,ymaxsensitive); ppl->SetZ(zc, zmax,zmax); ppl->SetHoles(holes); InsertLayer(ppl); } // Space between the chambers, air xin = xout; xout = xtrd + (plane + 1) * dxPlane; steps = 5; dx = (xout - xin)/steps; rho = 1.29e-3; radLength = 36.66; for(Int_t i=0; i in plane // Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region Double_t dx = (Double_t) fPar->GetTimeBinSize(); Int_t tbAmp = fPar->GetTimeBefore(); Int_t maxAmp = (Int_t) ((dxAmp+0.000001)/dx); if(kTRUE) maxAmp = 0; // intentional until we change parameter class Int_t tbDrift = fPar->GetTimeMax(); Int_t maxDrift = (Int_t) ((dxDrift+0.000001)/dx); Int_t tbPerPlane = TMath::Min(tbAmp,maxAmp) + TMath::Min(tbDrift,maxDrift); Int_t gtb = (plane+1) * tbPerPlane - localTB - 1 - TMath::Min(tbAmp,maxAmp); if((localTB < 0) && (TMath::Abs(localTB) > TMath::Min(tbAmp,maxAmp))) return -1; if(localTB >= TMath::Min(tbDrift,maxDrift)) return -1; return gtb; } //______________________________________________________ void AliTRDtracker::AliTRDtrackingSector::MapTimeBinLayers() { // // For all sensitive time bins sets corresponding layer index // in the array fTimeBins // Int_t index; for(Int_t i = 0; i < fN; i++) { index = fLayers[i]->GetTimeBinIndex(); // printf("gtb %d -> pl %d -> x %f \n", index, i, fLayers[i]->GetX()); if(index < 0) continue; if(index >= (Int_t) kMaxTimeBinIndex) { printf("*** AliTRDtracker::MapTimeBinLayers: \n"); printf(" index %d exceeds allowed maximum of %d!\n", index, kMaxTimeBinIndex-1); continue; } fTimeBinIndex[index] = i; } Double_t x1, dx1, x2, dx2, gap; for(Int_t i = 0; i < fN-1; i++) { x1 = fLayers[i]->GetX(); dx1 = fLayers[i]->GetdX(); x2 = fLayers[i+1]->GetX(); dx2 = fLayers[i+1]->GetdX(); gap = (x2 - dx2/2) - (x1 + dx1/2); if(gap < -0.01) { printf("*** warning: layers %d and %d are overlayed:\n",i,i+1); printf(" %f + %f + %f > %f\n", x1, dx1/2, dx2/2, x2); } if(gap > 0.01) { printf("*** warning: layers %d and %d have a large gap:\n",i,i+1); printf(" (%f - %f) - (%f + %f) = %f\n", x2, dx2/2, x1, dx1, gap); } } } //______________________________________________________ Int_t AliTRDtracker::AliTRDtrackingSector::GetLayerNumber(Double_t x) const { // // Returns the number of time bin which in radial position is closest to // if(x >= fLayers[fN-1]->GetX()) return fN-1; if(x <= fLayers[0]->GetX()) return 0; Int_t b=0, e=fN-1, m=(b+e)/2; for (; b fLayers[m]->GetX()) b=m+1; else e=m; } if(TMath::Abs(x - fLayers[m]->GetX()) > TMath::Abs(x - fLayers[m+1]->GetX())) return m+1; else return m; } //______________________________________________________ Int_t AliTRDtracker::AliTRDtrackingSector::GetInnerTimeBin() const { // // Returns number of the innermost SENSITIVE propagation layer // return GetLayerNumber(0); } //______________________________________________________ Int_t AliTRDtracker::AliTRDtrackingSector::GetOuterTimeBin() const { // // Returns number of the outermost SENSITIVE time bin // return GetLayerNumber(GetNumberOfTimeBins() - 1); } //______________________________________________________ Int_t AliTRDtracker::AliTRDtrackingSector::GetNumberOfTimeBins() const { // // Returns number of SENSITIVE time bins // Int_t tb, layer; for(tb = kMaxTimeBinIndex-1; tb >=0; tb--) { layer = GetLayerNumber(tb); if(layer>=0) break; } return tb+1; } //______________________________________________________ void AliTRDtracker::AliTRDtrackingSector::InsertLayer(AliTRDpropagationLayer* pl) { // // Insert layer in fLayers array. // Layers are sorted according to X coordinate. if ( fN == ((Int_t) kMaxLayersPerSector)) { printf("AliTRDtrackingSector::InsertLayer(): Too many layers !\n"); return; } if (fN==0) {fLayers[fN++] = pl; return;} Int_t i=Find(pl->GetX()); memmove(fLayers+i+1 ,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayer*)); fLayers[i]=pl; fN++; } //______________________________________________________ Int_t AliTRDtracker::AliTRDtrackingSector::Find(Double_t x) const { // // Returns index of the propagation layer nearest to X // if (x <= fLayers[0]->GetX()) return 0; if (x > fLayers[fN-1]->GetX()) return fN; Int_t b=0, e=fN-1, m=(b+e)/2; for (; b fLayers[m]->GetX()) b=m+1; else e=m; } return m; } //______________________________________________________ void AliTRDtracker::AliTRDpropagationLayer::SetZ(Double_t* center, Double_t *w, Double_t *wsensitive ) { // // set centers and the width of sectors for (Int_t icham=0;icham< AliTRDgeometry::kNcham;icham++){ fZc[icham] = center[icham]; fZmax[icham] = w[icham]; fZmaxSensitive[icham] = wsensitive[icham]; // printf("chamber\t%d\tzc\t%f\tzmax\t%f\tzsens\t%f\n",icham,fZc[icham],fZmax[icham],fZmaxSensitive[icham]); } } //______________________________________________________ void AliTRDtracker::AliTRDpropagationLayer::SetHoles(Bool_t *holes) { // // set centers and the width of sectors fHole = kFALSE; for (Int_t icham=0;icham< AliTRDgeometry::kNcham;icham++){ fIsHole[icham] = holes[icham]; if (holes[icham]) fHole = kTRUE; } } void AliTRDtracker::AliTRDpropagationLayer::GetPropagationParameters( Double_t y, Double_t z, Double_t &dx, Double_t &rho, Double_t &radLength, Bool_t &lookForCluster) const { // // Returns radial step , density , rad. length , // and sensitivity in point // dx = fdX; rho = fRho; radLength = fX0; lookForCluster = kFALSE; // // check dead regions in sensitive volume if(fTimeBinIndex >= 0) { // Int_t zone=-1; for(Int_t ch = 0; ch < (Int_t) kZones; ch++) { if (TMath::Abs(z - fZc[ch]) < fZmaxSensitive[ch]){ zone = ch; lookForCluster = !(fIsHole[zone]); if(TMath::Abs(y) > fYmaxSensitive){ lookForCluster = kFALSE; } if (fIsHole[zone]) { //if hole rho = 1.29e-3; radLength = 36.66; } } } return; } // // // check hole if (fHole==kFALSE) return; // for(Int_t ch = 0; ch < (Int_t) kZones; ch++) { if (TMath::Abs(z - fZc[ch]) < fZmax[ch]){ if (fIsHole[ch]) { //if hole rho = 1.29e-3; radLength = 36.66; } } } return; } Int_t AliTRDtracker::AliTRDpropagationLayer::GetZone( Double_t z) const { // // if (fTimeBinIndex < 0) return -20; //unknown Int_t zone=-10; // dead zone for(Int_t ch = 0; ch < (Int_t) kZones; ch++) { if(TMath::Abs(z - fZc[ch]) < fZmax[ch]) zone = ch; } return zone; } //______________________________________________________ void AliTRDtracker::AliTRDpropagationLayer::InsertCluster(AliTRDcluster* c, UInt_t index) { // Insert cluster in cluster array. // Clusters are sorted according to Y coordinate. if(fTimeBinIndex < 0) { printf("*** attempt to insert cluster into non-sensitive time bin!\n"); return; } if (fN== (Int_t) kMaxClusterPerTimeBin) { printf("AliTRDpropagationLayer::InsertCluster(): Too many clusters !\n"); return; } if (fN==0) {fIndex[0]=index; fClusters[fN++]=c; return;} Int_t i=Find(c->GetY()); memmove(fClusters+i+1 ,fClusters+i,(fN-i)*sizeof(AliTRDcluster*)); memmove(fIndex +i+1 ,fIndex +i,(fN-i)*sizeof(UInt_t)); fIndex[i]=index; fClusters[i]=c; fN++; } //______________________________________________________ Int_t AliTRDtracker::AliTRDpropagationLayer::Find(Double_t y) const { // Returns index of the cluster nearest in Y if (y <= fClusters[0]->GetY()) return 0; if (y > fClusters[fN-1]->GetY()) return fN; Int_t b=0, e=fN-1, m=(b+e)/2; for (; b fClusters[m]->GetY()) b=m+1; else e=m; } return m; } //--------------------------------------------------------- Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster* c) { // // Returns correction factor for tilted pads geometry // Double_t h01 = sin(TMath::Pi() / 180.0 * fPar->GetTiltingAngle()); Int_t det = c->GetDetector(); Int_t plane = fGeom->GetPlane(det); //if((plane == 1) || (plane == 3) || (plane == 5)) h01=-h01; if((plane == 0) || (plane == 2) || (plane == 4)) h01=-h01; if(fNoTilt) h01 = 0; return h01; }