X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=TRD%2FAliTRDtracker.cxx;h=aa62e5f2dc87197135a28cb7714ea5f72d9d6ba9;hb=a60813de44ab6a28996bc384199a801bdc82c847;hp=16b15f152645fb4cef6901dec0c76550a2ce1fd4;hpb=0a29d0f1e700a829bfff538d0133a28be811d937;p=u%2Fmrichter%2FAliRoot.git diff --git a/TRD/AliTRDtracker.cxx b/TRD/AliTRDtracker.cxx index 16b15f15264..aa62e5f2dc8 100644 --- a/TRD/AliTRDtracker.cxx +++ b/TRD/AliTRDtracker.cxx @@ -13,74 +13,33 @@ * provided "as is" without express or implied warranty. * **************************************************************************/ -/* -$Log$ -Revision 1.14 2001/11/14 10:50:46 cblume -Changes in digits IO. Add merging of summable digits +/* $Id$ */ -Revision 1.13 2001/05/30 12:17:47 hristov -Loop variables declared once - -Revision 1.12 2001/05/28 17:07:58 hristov -Last minute changes; ExB correction in AliTRDclusterizerV1; taking into account of material in G10 TEC frames and material between TEC planes (C.Blume,S.Sedykh) - -Revision 1.8 2000/12/20 13:00:44 cblume -Modifications for the HP-compiler - -Revision 1.7 2000/12/08 16:07:02 cblume -Update of the tracking by Sergei - -Revision 1.6 2000/11/30 17:38:08 cblume -Changes to get in line with new STEER and EVGEN - -Revision 1.5 2000/11/14 14:40:27 cblume -Correction for the Sun compiler (kTRUE and kFALSE) - -Revision 1.4 2000/11/10 14:57:52 cblume -Changes in the geometry constants for the DEC compiler - -Revision 1.3 2000/10/15 23:40:01 cblume -Remove AliTRDconst - -Revision 1.2 2000/10/06 16:49:46 cblume -Made Getters const - -Revision 1.1.2.2 2000/10/04 16:34:58 cblume -Replace include files by forward declarations - -Revision 1.1.2.1 2000/09/22 14:47:52 cblume -Add the tracking code - -*/ - -//////////////////////////////////////////////////////////////////////////////// -// // -// The TRD tracker // -// // -//////////////////////////////////////////////////////////////////////////////// - -#include +/////////////////////////////////////////////////////////////////////////////// +// // +// The standard TRD tracker // +// // +/////////////////////////////////////////////////////////////////////////////// +#include #include -#include #include -#include +#include +#include -#include "AliRun.h" -#include "AliTRD.h" #include "AliTRDgeometry.h" -#include "AliTRDrecPoint.h" +#include "AliTRDparameter.h" +#include "AliTRDgeometryHole.h" #include "AliTRDcluster.h" #include "AliTRDtrack.h" -#include "AliTRDtrackingSector.h" -#include "AliTRDtimeBin.h" +#include "AliESD.h" #include "AliTRDtracker.h" ClassImp(AliTRDtracker) const Float_t AliTRDtracker::fgkSeedDepth = 0.5; - const Float_t AliTRDtracker::fgkSeedStep = 0.05; + const Float_t AliTRDtracker::fgkSeedStep = 0.10; const Float_t AliTRDtracker::fgkSeedGap = 0.25; const Float_t AliTRDtracker::fgkMaxSeedDeltaZ12 = 40.; @@ -96,146 +55,203 @@ ClassImp(AliTRDtracker) const Float_t AliTRDtracker::fgkMinClustersInSeed = 0.7; const Float_t AliTRDtracker::fgkMinClustersInTrack = 0.5; - const Float_t AliTRDtracker::fgkSkipDepth = 0.05; - const Float_t AliTRDtracker::fgkLabelFraction = 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 = 24.; + const Double_t AliTRDtracker::fgkMaxChi2 = 12.; + +const Int_t AliTRDtracker::fgkFirstPlane = 5; +const Int_t AliTRDtracker::fgkLastPlane = 17; + //____________________________________________________________________ -AliTRDtracker::AliTRDtracker() +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 - // - fEvent = 0; - fGeom = NULL; + 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(); + } - fNclusters = 0; - fClusters = NULL; - fNseeds = 0; - fSeeds = NULL; - fNtracks = 0; - fTracks = NULL; + 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(); + } - fSY2corr = 0.025; -} + 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(); -//____________________________________________________________________ -AliTRDtracker::AliTRDtracker(const Text_t* name, const Text_t* title) - :TNamed(name, title) -{ - // - // TRD tracker contructor - // + savedir->cd(); - fEvent = 0; - fGeom = NULL; + + // fGeom->SetT0(fTzero); fNclusters = 0; fClusters = new TObjArray(2000); fNseeds = 0; - fSeeds = new TObjArray(20000); + fSeeds = new TObjArray(2000); fNtracks = 0; - fTracks = new TObjArray(10000); - - fSY2corr = 0.025; -} - -//___________________________________________________________________ -AliTRDtracker::~AliTRDtracker() -{ - // - // Destructor - // - - delete fClusters; - delete fTracks; - delete fSeeds; - delete fGeom; - -} + fTracks = new TObjArray(1000); -//___________________________________________________________________ -void AliTRDtracker::Clusters2Tracks(TH1F *hs, TH1F *hd) -{ - // - // Do the trackfinding - // + 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); + } + } - Int_t i; + Float_t tiltAngle = TMath::Abs(fPar->GetTiltingAngle()); + if(tiltAngle < 0.1) { + fNoTilt = kTRUE; + } - Int_t inner, outer; - Int_t fTotalNofTimeBins = fGeom->GetTimeMax() * AliTRDgeometry::Nplan(); - Int_t nSteps = (Int_t) (fgkSeedDepth / fgkSeedStep); - Int_t gap = (Int_t) (fTotalNofTimeBins * fgkSeedGap); - Int_t step = (Int_t) (fTotalNofTimeBins * fgkSeedStep); + fSY2corr = 0.2; + fSZ2corr = 120.; + if(fNoTilt && (tiltAngle > 0.1)) fSY2corr = fSY2corr + tiltAngle * 0.05; - // nSteps = 1; - if (!fClusters) return; + // calculate max gap on track - AliTRDtrackingSector fTrSec[AliTRDgeometry::kNsect]; - SetUpSectors(fTrSec); + Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region + Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region - // make a first turn looking for seed ends in the same (n,n) - // and in the adjacent sectors (n,n+1) + 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); - for(i=0; iNplan() * fgkSkipDepth); - for(i=0; icd(); +} -//_____________________________________________________________________ -Double_t AliTRDtracker::ExpectedSigmaY2(Double_t r, Double_t tgl, Double_t pt) const +//___________________________________________________________________ +AliTRDtracker::~AliTRDtracker() { // - // Parametrised "expected" error of the cluster reconstruction in Y + // Destructor of AliTRDtracker // - Double_t s = 0.08 * 0.08; - return s; + 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]; + } +} //_____________________________________________________________________ -Double_t AliTRDtracker::ExpectedSigmaZ2(Double_t r, Double_t tgl) const -{ + +Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track) { // - // Parametrised "expected" error of the cluster reconstruction in Z + // Rotates the track when necessary // - Double_t s = 6 * 6 /12.; - return s; + 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; +} //_____________________________________________________________________ -Double_t f1trd(Double_t x1,Double_t y1, - Double_t x2,Double_t y2, - Double_t x3,Double_t y3) +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 - // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch // - 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)); @@ -245,17 +261,16 @@ Double_t f1trd(Double_t x1,Double_t y1, Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b); return -xr*yr/sqrt(xr*xr+yr*yr); - } //_____________________________________________________________________ -Double_t f2trd(Double_t x1,Double_t y1, - Double_t x2,Double_t y2, - Double_t x3,Double_t y3) +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 center of curvature - // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch + // 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); @@ -267,595 +282,1502 @@ Double_t f2trd(Double_t x1,Double_t y1, 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); - } //_____________________________________________________________________ -Double_t f3trd(Double_t x1,Double_t y1, - Double_t x2,Double_t y2, - Double_t z1,Double_t z2) +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 - // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch // return (z1 - z2)/sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)); - } -//___________________________________________________________________ - -Int_t AliTRDtracker::FindProlongation(AliTRDtrack& t, AliTRDtrackingSector *sec, - Int_t s, Int_t rf, Int_t matchedIndex, - TH1F *hs, TH1F *hd) -{ +AliTRDcluster * AliTRDtracker::GetCluster(AliTRDtrack * track, Int_t plane, Int_t timebin){ // - // Starting from current position on track=t this function tries - // to extrapolate the track up to timeBin=rf and to confirm prolongation - // if a close cluster is found. *sec is a pointer to allocated - // array of sectors, in which the initial sector has index=s. + //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; +} - // TH1F *hsame = hs; - // TH1F *hdiff = hd; - // Bool_t good_match; +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 + // - const Int_t kTimeBinsToSkip=Int_t(fgkSkipDepth*sec->GetNtimeBins()); - Int_t tryAgain=kTimeBinsToSkip; + 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; + } - Int_t ns=Int_t(2*TMath::Pi()/alpha+0.5); + cout<<"Number of loaded seeds: "<GetTimeBinNumber(t.GetX())-1; nr>=rf; nr--) { + if(fAddTRDseeds) { + // Find tracks for the seeds in the TRD + Int_t timeBins = fTrSec[0]->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; iGetX(nr); - Double_t ymax=x*TMath::Tan(0.5*alpha); + nseed=fSeeds->GetEntriesFast(); + + 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: "<TECframe(nr,t.GetY(),t.GetZ())) { - rho = 1.7; x0 = 33.0; // G10 frame - } - if(TMath::Abs(x - t.GetX()) > 3) { - rho = 0.0559; x0 = 55.6; // radiator +//_____________________________________________________________________________ +Int_t AliTRDtracker::PropagateBack(AliESD* event) { + // + // Gets seeds from ESD event. The seeds are AliTPCtrack's found and + // backpropagated by the TPC tracker. Each seed is first propagated + // to the TRD, and then its prolongation is searched in the TRD. + // If sufficiently long continuation of the track is found in the TRD + // the track is updated, otherwise it's stored as originaly defined + // by the TPC tracker. + // + + Int_t found=0; + Float_t foundMin = 20; + + Int_t n = event->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); + seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); //make backup + fNseeds++; + Float_t p4 = track->GetC(); + // + Int_t expectedClr = FollowBackProlongation(*track); + /* + // only debug purpose + if (track->GetNumberOfClusters()SetSeedLabel(lbl); + FollowBackProlongation(*track1); + AliTRDtrack *track2= new AliTRDtrack(*seed); + track->SetSeedLabel(lbl); + FollowBackProlongation(*track2); + delete track1; + delete track2; } - if (!t.PropagateTo(x,x0,rho,0.139)) { - cerr<<"Can't propagate to x = "<GetC()-p4)/TMath::Abs(p4)>0.2) { + delete track; + continue; //too big change of curvature - to be checked } - AliTRDtimeBin& timeBin=sec[s][nr]; - Double_t sy2=ExpectedSigmaY2(t.GetX(),t.GetTgl(),t.GetPt()); - Double_t sz2=ExpectedSigmaZ2(t.GetX(),t.GetTgl()); - Double_t road=25.*sqrt(t.GetSigmaY2() + sy2), y=t.GetY(), z=t.GetZ(); - - if (road>fgkWideRoad) { - if (t.GetNclusters() > 4) { - cerr<GetNumberOfClusters(); + if (foundClr >= foundMin) { + track->CookdEdx(0.,1.); + CookdEdxTimBin(*track); + + CookLabel(track, 1-fgkLabelFraction); + if(track->GetChi2()/track->GetNumberOfClusters()<6) { // sign only gold tracks + UseClusters(track); } - return 0; - } - - AliTRDcluster *cl=0; - UInt_t index=0; - // Int_t ncl = 0; - - Double_t maxChi2=fgkMaxChi2; - - if (timeBin) { - - for (Int_t i=timeBin.Find(y-road); iGetTrackIndex(0) == matchedIndex) || - // (c->GetTrackIndex(1) == matchedIndex) || - // (c->GetTrackIndex(2) == matchedIndex)) good_match = kTRUE; - // if(hsame) hsame->Fill(TMath::Abs(c->GetY()-y)/road); - // if(hdiff) hdiff->Fill(road); - - if (c->GetY() > y+road) break; - if (c->IsUsed() > 0) continue; - - // if(good_match) hsame->Fill(TMath::Abs(c->GetZ()-z)); - // else hdiff->Fill(TMath::Abs(c->GetZ()-z)); - - // if(!good_match) continue; - - if((c->GetZ()-z)*(c->GetZ()-z) > 3 * 12 * sz2) continue; - - Double_t chi2=t.GetPredictedChi2(c); - - // if((c->GetTrackIndex(0) == matchedIndex) || - // (c->GetTrackIndex(1) == matchedIndex) || - // (c->GetTrackIndex(2) == matchedIndex)) - // hdiff->Fill(chi2); - - // ncl++; - - 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) > 3.25 * 12 * sz2) continue; - - Double_t chi2=t.GetPredictedChi2(c); - - // ncl++; - - if (chi2 > maxChi2) continue; - maxChi2=chi2; - cl=c; - index=timeBin.GetIndex(i); - } + Bool_t isGold = kFALSE; + + if (track->GetChi2()/track->GetNumberOfClusters()<5) { //full gold track + seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); + isGold = kTRUE; + } + if (!isGold && track->GetNCross()==0&&track->GetChi2()/track->GetNumberOfClusters()<7){ //almost gold track + seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); + isGold = kTRUE; + } + if (!isGold && track->GetBackupTrack()){ + if (track->GetBackupTrack()->GetNumberOfClusters()>foundMin&& + (track->GetBackupTrack()->GetChi2()/(track->GetBackupTrack()->GetNumberOfClusters()+1))<7){ + seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup); + isGold = kTRUE; + } } - + } + else{ + delete track; + continue; } - if (cl) { - - t.Update(cl,maxChi2,index); + + if (track->GetStop()==kFALSE){ - tryAgain=kTimeBinsToSkip; - } else { - if (tryAgain==0) break; + 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) { - // cerr<<"y > ymax: "< "<Clear(); fNseeds=0; + return 0; +} //_____________________________________________________________________________ -void AliTRDtracker::GetEvent(const Char_t *hitfile, const Char_t *clusterfile) +Int_t AliTRDtracker::RefitInward(AliESD* event) { // - // Opens a ROOT-file with TRD-clusters and reads the cluster-tree in + // 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) // - ReadClusters(fClusters, clusterfile); - - // get geometry from the file with hits - - TFile *fInputFile = (TFile*) gROOT->GetListOfFiles()->FindObject(hitfile); - if (!fInputFile) { - printf("AliTRDtracker::Open -- "); - printf("Open the ALIROOT-file %s.\n",hitfile); - fInputFile = new TFile(hitfile,"UPDATE"); - } - else { - printf("AliTRDtracker::Open -- "); - printf("%s is already open.\n",hitfile); - } + 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); + AliTRDtrack* seed2 = new AliTRDtrack(*seed); + if (seed2->GetX()<270){ + seed->UpdateTrackParams(seed2, AliESDtrack::kTRDbackup); // backup TPC track - only update + delete seed2; + continue; + } - // Get AliRun object from file or create it if not on file + ULong_t status=seed->GetStatus(); + if ( (status & AliESDtrack::kTRDout ) == 0 ) { + delete seed2; + continue; + } + if ( (status & AliESDtrack::kTRDin) != 0 ) { + delete seed2; + continue; + } + nseed++; + seed2->ResetCovariance(5.); + AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha()); + for (Int_t i=0;iSetPIDsignals(seed2->GetPIDsignals(i),i); + pt->SetPIDTimBin(seed2->GetPIDTimBin(i),i); + } - gAlice = (AliRun*) fInputFile->Get("gAlice"); - if (gAlice) { - printf("AliTRDtracker::GetEvent -- "); - printf("AliRun object found on file.\n"); - } - else { - printf("AliTRDtracker::GetEvent -- "); - printf("Could not find AliRun object.\n"); - } + 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); + for (Int_t i=0;iSetTRDsignals(pt->GetPIDsignals(i),i); + seed->SetTRDTimBin(pt->GetPIDTimBin(i),i); + } + }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)) { + pt2->CookdEdx(0.,1.); + CookdEdxTimBin(*pt2); + seed->UpdateTrackParams(pt2, AliESDtrack::kTRDrefit); + for (Int_t i=0;iSetTRDsignals(pt2->GetPIDsignals(i),i); + seed->SetTRDTimBin(pt2->GetPIDTimBin(i),i); + } + } + delete pt2; + } - /* - // Import the Trees for the event nEvent in the file - Int_t nparticles = gAlice->GetEvent(fEvent); - cerr<<"nparticles = "<GetDetector("TRD"); - fGeom = trd->GetGeometry(); + return 0; -} +} -//_____________________________________________________________________________ -void AliTRDtracker::SetUpSectors(AliTRDtrackingSector *sec) +//--------------------------------------------------------------------------- +Int_t AliTRDtracker::FollowProlongation(AliTRDtrack& t, Int_t rf) { - // - // Fills clusters into TRD tracking_sectors - // Note that the numbering scheme for the TRD tracking_sectors - // differs from that of TRD sectors - // + // Starting from current position on track=t this function tries + // to extrapolate the track up to timeBin=0 and to confirm prolongation + // if a close cluster is found. Returns the number of clusters + // expected to be found in sensitive layers - for (Int_t i=0; iGetEntriesFast(); - UInt_t index; - while (ncl--) { - printf("\r %d left ",ncl); - AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(ncl); - Int_t detector=c->GetDetector(), localTimeBin=c->GetLocalTimeBin(); - Int_t sector=fGeom->GetSector(detector); + Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); - Int_t trackingSector = AliTRDgeometry::kNsect - sector - 1; + Int_t tryAgain=fMaxGap; - Int_t tb=sec[sector].GetTimeBin(detector,localTimeBin); - index=ncl; - sec[trackingSector][tb].InsertCluster(c,index); + Double_t alpha=t.GetAlpha(); + alpha = TVector2::Phi_0_2pi(alpha); - } - printf("\r\n"); -} + 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; -//_____________________________________________________________________________ -void AliTRDtracker::MakeSeeds(Int_t inner, Int_t outer, - AliTRDtrackingSector* fTrSec, Int_t turn, - TH1F *hs, TH1F *hd) -{ - // - // Creates track seeds using clusters in timeBins=i1,i2 - // + alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning - Int_t i2 = inner, i1 = outer; - Int_t ti[3], to[3]; - Int_t nprim = 85600/2; + + 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; + } - TH1F *hsame = hs; - TH1F *hdiff = hd; - Bool_t match = false; - Int_t matchedIndex; - // find seeds + if(lookForCluster) { - Double_t x[5], c[15]; - Int_t maxSec=AliTRDgeometry::kNsect; + expectedNumberOfClusters++; + wIndex = (Float_t) t.GetLabel(); + wTB = nr; - Double_t alpha=AliTRDgeometry::GetAlpha(); - Double_t shift=AliTRDgeometry::GetAlpha()/2.; - Double_t cs=cos(alpha), sn=sin(alpha); - Double_t cs2=cos(2.*alpha), sn2=sin(2.*alpha); + AliTRDpropagationLayer& timeBin=*(fTrSec[s]->GetLayer(nr-1)); - Double_t x1 =fTrSec[0].GetX(i1); - Double_t xx2=fTrSec[0].GetX(i2); + 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; + - printf("\n"); + 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((turn != 1)&&(turn != 2)) { - printf("*** Error in MakeSeeds: unexpected turn = %d \n", turn); - return; + 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; + + +} +//___________________________________________________________________ - for (Int_t ns=0; ns 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 - printf("\n MakeSeeds: sector %d \n", ns); - Int_t nl2=fTrSec[(ns-2+maxSec)%maxSec][i2]; - Int_t nl=fTrSec[(ns-1+maxSec)%maxSec][i2]; - Int_t nm=fTrSec[ns][i2]; - Int_t nu=fTrSec[(ns+1)%maxSec][i2]; - Int_t nu2=fTrSec[(ns+2)%maxSec][i2]; + 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; - AliTRDtimeBin& r1=fTrSec[ns][i1]; + Int_t trackIndex = t.GetLabel(); + Int_t tryAgain=fMaxGap; - for (Int_t is=0; is < r1; is++) { - Double_t y1=r1[is]->GetY(), z1=r1[is]->GetZ(); - for(Int_t ii=0; ii<3; ii++) to[ii] = r1[is]->GetTrackIndex(ii); + Double_t alpha=t.GetAlpha(); + TVector2::Phi_0_2pi(alpha); - 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 (jsGetY(); z2=cl->GetZ(); - for(Int_t ii=0; ii<3; ii++) ti[ii] = cl->GetTrackIndex(ii); - - x2= xx2*cs2+y2*sn2; - y2=-xx2*sn2+y2*cs2; - } - else if (jsGetY(); z2=cl->GetZ(); - for(Int_t ii=0; ii<3; ii++) ti[ii] = cl->GetTrackIndex(ii); - - x2= xx2*cs+y2*sn; - y2=-xx2*sn+y2*cs; + Int_t s; - } - else if (jsGetY(); z2=cl->GetZ(); - for(Int_t ii=0; ii<3; ii++) ti[ii] = cl->GetTrackIndex(ii); - } - else if (jsGetY(); z2=cl->GetZ(); - for(Int_t ii=0; ii<3; ii++) ti[ii] = cl->GetTrackIndex(ii); + Int_t outerTB = fTrSec[0]->GetOuterTimeBin(); + Double_t radLength, rho, x, dx, y, ymax = 0, z; + Bool_t lookForCluster; - x2=xx2*cs-y2*sn; - y2=xx2*sn+y2*cs; + Int_t expectedNumberOfClusters = 0; + x = t.GetX(); - } - else { - if(turn != 2) continue; - AliTRDtimeBin& r2=fTrSec[(ns+2)%maxSec][i2]; - cl=r2[js-nl2-nl-nm-nu]; - y2=cl->GetY(); z2=cl->GetZ(); - for(Int_t ii=0; ii<3; ii++) ti[ii] = cl->GetTrackIndex(ii); - - x2=xx2*cs2-y2*sn2; - y2=xx2*sn2+y2*cs2; - } - + alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning - match = false; - matchedIndex = -1; - for (Int_t ii=0; ii<3; ii++) { - // cerr<<"ti["< fgkMaxSeedDeltaZ12) continue; + Int_t nRefPlane = fgkFirstPlane; + Bool_t isNewLayer = kFALSE; - Double_t zz=z1 - z1/x1*(x1-x2); + 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; - if (TMath::Abs(zz-z2)>fgkMaxSeedDeltaZ) continue; + y = t.GetY(); + z = t.GetZ(); - Double_t d=(x2-x1)*(0.-y2)-(0.-x2)*(y2-y1); - if (d==0.) {cerr<<"TRD MakeSeeds: Straight seed !\n"; continue;} + // Barrel Tracks [SR, 04.04.2003] - x[0]=y1; - x[1]=z1; - x[2]=f1trd(x1,y1,x2,y2,x3,y3); + s = t.GetSector(); + if (fTrSec[s]->GetLayer(nr)->IsSensitive() != + fTrSec[s]->GetLayer(nr+1)->IsSensitive() ) { - if (TMath::Abs(x[2]) > fgkMaxSeedC) continue; +// if (IsStoringBarrel()) StoreBarrelTrack(&t, nRefPlane++, kTrackBack); + } - x[3]=f2trd(x1,y1,x2,y2,x3,y3); + 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; + - if (TMath::Abs(x[2]*x1-x[3]) >= 0.99999) continue; + 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 (nr fgkMaxSeedTan) continue; +} - Double_t a=asin(x[3]); - Double_t zv=z1 - x[4]/x[2]*(a+asin(x[2]*x1-x[3])); +//--------------------------------------------------------------------------- +Int_t AliTRDtracker::Refit(AliTRDtrack& t, Int_t rf) +{ + // Starting from current position on track=t this function tries + // to extrapolate the track up to timeBin=0 and to reuse already + // assigned clusters. Returns the number of clusters + // expected to be found in sensitive layers + // get indices of assigned clusters for each layer + // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch) + + Int_t iCluster[90]; + for (Int_t i = 0; i < 90; i++) iCluster[i] = 0; + for (Int_t i = 0; i < t.GetNumberOfClusters(); i++) { + Int_t index = t.GetClusterIndex(i); + AliTRDcluster *cl=(AliTRDcluster*) GetCluster(index); + if (!cl) continue; + Int_t detector=cl->GetDetector(); + Int_t localTimeBin=cl->GetLocalTimeBin(); + Int_t sector=fGeom->GetSector(detector); + Int_t plane=fGeom->GetPlane(detector); - if (TMath::Abs(zv)>fgkMaxSeedVertexZ) continue; + Int_t trackingSector = CookSectorIndex(sector); - 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; - - Double_t f20=(f1trd(x1,y1+sy,x2,y2,x3,y3)-x[2])/sy; - Double_t f22=(f1trd(x1,y1,x2,y2+sy,x3,y3)-x[2])/sy; - Double_t f24=(f1trd(x1,y1,x2,y2,x3,y3+sy)-x[2])/sy; - Double_t f30=(f2trd(x1,y1+sy,x2,y2,x3,y3)-x[3])/sy; - Double_t f32=(f2trd(x1,y1,x2,y2+sy,x3,y3)-x[3])/sy; - Double_t f34=(f2trd(x1,y1,x2,y2,x3,y3+sy)-x[3])/sy; - Double_t f40=(f3trd(x1,y1+sy,x2,y2,z1,z2)-x[4])/sy; - Double_t f41=(f3trd(x1,y1,x2,y2,z1+sz,z2)-x[4])/sz; - Double_t f42=(f3trd(x1,y1,x2,y2+sy,z1,z2)-x[4])/sy; - Double_t f43=(f3trd(x1,y1,x2,y2,z1,z2+sz)-x[4])/sz; + Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin); + if(gtb < 0) continue; + Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb); + iCluster[layer] = index; + } + t.ResetClusters(); - c[0]=sy1; - c[1]=0.; c[2]=sz1; - c[3]=f20*sy1; c[4]=0.; c[5]=f20*sy1*f20+f22*sy2*f22+f24*sy3*f24; - c[6]=f30*sy1; c[7]=0.; c[8]=f30*sy1*f20+f32*sy2*f22+f34*sy3*f24; - c[9]=f30*sy1*f30+f32*sy2*f32+f34*sy3*f34; - c[10]=f40*sy1; c[11]=f41*sz1; c[12]=f40*sy1*f20+f42*sy2*f22; - c[13]=f40*sy1*f30+f42*sy2*f32; - c[14]=f40*sy1*f40+f41*sz1*f41+f42*sy2*f42+f43*sz2*f43; + Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); - UInt_t index=r1.GetIndex(is); - - AliTRDtrack *track=new AliTRDtrack(r1[is],index,x,c,x1,ns*alpha+shift); + Double_t alpha=t.GetAlpha(); + alpha = TVector2::Phi_0_2pi(alpha); - Int_t rc=FindProlongation(*track,fTrSec,ns,i2,matchedIndex,hsame,hdiff); + Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; + Double_t radLength, rho, x, dx, y, ymax, z; - // if (match) hsame->Fill((Float_t) track->GetNclusters()); - // else hdiff->Fill((Float_t) track->GetNclusters()); - // delete track; - // continue; + Int_t expectedNumberOfClusters = 0; + Bool_t lookForCluster; - if ((rc < 0) || - (track->GetNclusters() < (i1-i2)*fgkMinClustersInSeed)) delete track; - else { - fSeeds->AddLast(track); fNseeds++; - printf("\r found seed %d ", fNseeds); - } - } - } - } + alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning - fSeeds->Sort(); -} + + 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; + } -//_____________________________________________________________________________ -void AliTRDtracker::ReadClusters(TObjArray *array, const Char_t *filename) -{ - // - // Reads AliTRDclusters (option >= 0) or AliTRDrecPoints (option < 0) - // from the file. The names of the cluster tree and branches - // should match the ones used in AliTRDclusterizer::WriteClusters() - // + 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; + } - TDirectory *savedir=gDirectory; + if(lookForCluster) expectedNumberOfClusters++; - TFile *file = TFile::Open(filename); - if (!file->IsOpen()) {printf("Can't open file %s !\n",filename); return;} + // 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); + } - Char_t treeName[12]; - sprintf(treeName,"TreeR%d_TRD",fEvent); - TTree *clusterTree = (TTree*) file->Get(treeName); + return expectedNumberOfClusters; +} - TObjArray *clusterArray = new TObjArray(400); - - clusterTree->GetBranch("TRDcluster")->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; - AliTRDcluster *c = 0; +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 - for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) { + 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; - // Import the tree - nbytes += clusterTree->GetEvent(iEntry); + if(!t.PropagateTo(x,radLength,rho)) return 0; + AdjustSector(&t); + if(!t.PropagateTo(x,radLength,rho)) return 0; - // Get the number of points in the detector - Int_t nCluster = clusterArray->GetEntriesFast(); - printf("Read %d clusters from entry %d \n", nCluster, iEntry); + y = t.GetY(); + z = t.GetZ(); - // 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); - array->AddLast(co); - delete clusterArray->RemoveAt(iCluster); - } + // 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 "<Close(); - delete clusterArray; - savedir->cd(); - + + while (ncl--) { +// printf("\r %d left ",ncl); + AliTRDcluster *c=(AliTRDcluster*)fClusters->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::FindTracks(AliTRDtrackingSector* fTrSec, TH1F *hs, TH1F *hd) -{ +//_____________________________________________________________________________ +void AliTRDtracker::UnloadClusters() +{ // - // Finds tracks in TRD + // Clears the arrays of clusters and tracks. Resets sectors and timebins // - TH1F *hsame = hs; - TH1F *hdiff = hd; + Int_t i, nentr; - Int_t numOfTimeBins = fTrSec[0].GetNtimeBins(); - Int_t nseed=fSeeds->GetEntriesFast(); + nentr = fClusters->GetEntriesFast(); + for (i = 0; i < nentr; i++) delete fClusters->RemoveAt(i); + fNclusters = 0; - Int_t nSeedClusters; - for (Int_t i=0; iGetEntriesFast(); + for (i = 0; i < nentr; i++) delete fSeeds->RemoveAt(i); - AliTRDtrack& t=*((AliTRDtrack*)fSeeds->UncheckedAt(i)); + nentr = fTracks->GetEntriesFast(); + for (i = 0; i < nentr; i++) delete fTracks->RemoveAt(i); - nSeedClusters = t.GetNclusters(); - Double_t alpha=t.GetAlpha(); + Int_t nsec = AliTRDgeometry::kNsect; - if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi(); - if (alpha < 0. ) alpha += 2.*TMath::Pi(); - Int_t ns=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; + for (i = 0; i < nsec; i++) { + for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) { + fTrSec[i]->GetLayer(pl)->Clear(); + } + } - Int_t label = GetTrackLabel(t); +} - if (FindProlongation(t,fTrSec,ns,0,label,hsame,hdiff)) { - cerr<<"No of clusters in the track = "<= Int_t(fgkMinClustersInTrack*numOfTimeBins)) { - Int_t label = GetTrackLabel(t); - t.SetLabel(label); - t.CookdEdx(); - UseClusters(t); +//__________________________________________________________________________ +void AliTRDtracker::MakeSeeds(Int_t inner, Int_t outer, Int_t turn) +{ + // Creates track seeds using clusters in timeBins=i1,i2 - AliTRDtrack *pt = new AliTRDtrack(t); - fTracks->AddLast(pt); fNtracks++; + if(turn > 2) { + cerr<<"MakeSeeds: turn "<RemoveAt(i); - fNseeds--; - } -} + Double_t x[5], c[15]; + Int_t maxSec=AliTRDgeometry::kNsect; + + Double_t alpha=AliTRDgeometry::GetAlpha(); + Double_t shift=AliTRDgeometry::GetAlpha()/2.; + Double_t cs=cos(alpha), sn=sin(alpha); + Double_t cs2=cos(2.*alpha), sn2=sin(2.*alpha); + + + Int_t i2 = fTrSec[0]->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; + } -//__________________________________________________________________ -void AliTRDtracker::UseClusters(AliTRDtrack t) + 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"); - Int_t ncl=t.GetNclusters(); - for (Int_t i=0; iUncheckedAt(index); - c->Use(); + 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; } //__________________________________________________________________ -Int_t AliTRDtracker::GetTrackLabel(AliTRDtrack t) +void AliTRDtracker::CookLabel(AliKalmanTrack* pt, Float_t wrong) const { // - // Get MC label + // This cooks a label. Mmmmh, smells good... // Int_t label=123456789, index, i, j; - Int_t ncl=t.GetNclusters(); - const Int_t kRange = AliTRDgeometry::kNplan * fGeom->GetTimeMax(); + Int_t ncl=pt->GetNumberOfClusters(); + const Int_t kRange = fTrSec[0]->GetOuterTimeBin()+1; + Bool_t labelAdded; // Int_t s[kRange][2]; @@ -870,28 +1792,28 @@ Int_t AliTRDtracker::GetTrackLabel(AliTRDtrack t) Int_t t0,t1,t2; for (i=0; iGetClusterIndex(i); AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); - t0=c->GetTrackIndex(0); - t1=c->GetTrackIndex(1); - t2=c->GetTrackIndex(2); + 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->GetTrackIndex(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++; - } + 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++; + } } } } @@ -904,55 +1826,785 @@ Int_t AliTRDtracker::GetTrackLabel(AliTRDtrack t) max=s[i][1]; label=s[i][0]; } } + + for (i=0; i ncl*fgkLabelFraction) return label; - else return -1; + + if ((1.- Float_t(max)/ncl) > wrong) label=-label; + + pt->SetLabel(label); + } -//___________________________________________________________________ -Int_t AliTRDtracker::WriteTracks(const Char_t *filename) + +//__________________________________________________________________ +void AliTRDtracker::UseClusters(const AliKalmanTrack* t, Int_t from) const { // - // Write the tracks to the output file + // Use clusters, but don't abuse them! // - TDirectory *savedir=gDirectory; + Int_t ncl=t->GetNumberOfClusters(); + for (Int_t i=from; iGetClusterIndex(i); + AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); + c->Use(); + } +} - //TFile *out=TFile::Open(filename,"RECREATE"); - TFile *out = (TFile*) gROOT->GetListOfFiles()->FindObject(filename); - if (!out) { - printf("AliTRDtracker::Open -- "); - printf("Open the ALIROOT-file %s.\n",filename); - out = new TFile(filename,"RECREATE"); + +//_____________________________________________________________________ +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; } - else { - printf("AliTRDtracker::Open -- "); - printf("%s is already open.\n",filename); + + fYmax = 0; + + if(fTimeBinIndex >= 0) { + fClusters = new AliTRDcluster*[kMaxClusterPerTimeBin]; + fIndex = new UInt_t[kMaxClusterPerTimeBin]; } - Char_t treeName[12]; - sprintf(treeName,"TreeT%d_TRD",fEvent); - TTree tracktree(treeName,"Tree with TRD tracks"); + 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; - AliTRDtrack *iotrack=0; - tracktree.Branch("tracks","AliTRDtrack",&iotrack,32000,0); + Double_t x, xin, xout, dx, rho, radLength; + Int_t steps; - Int_t ntracks=fTracks->GetEntriesFast(); + // set time bins in the gas of the TPC - for (Int_t i=0; iUncheckedAt(i); - iotrack=pt; - tracktree.Fill(); - cerr<<"WriteTracks: put track "<Close(); + // set time bins in the outer field cage vessel - savedir->cd(); + dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar + ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); + InsertLayer(ppl); - cerr<<"WriteTracks: done"<Rmin(); + + // 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; +} + + +void AliTRDtracker::CookdEdxTimBin(AliTRDtrack& TRDtrack) +{ + // *** ADDED TO GET MORE INFORMATION FOR TRD PID ---- PS + // This is setting fdEdxPlane and fTimBinPlane + // Sums up the charge in each plane for track TRDtrack and also get the + // Time bin for Max. Cluster + // Prashant Shukla (shukla@physi.uni-heidelberg.de) + + // const Int_t kNPlane = AliTRDgeometry::Nplan(); + // const Int_t kNPlane = 6; + Double_t clscharge[kNPlane], maxclscharge[kNPlane]; + Int_t nCluster[kNPlane], timebin[kNPlane]; + + //Initialization of cluster charge per plane. + for (Int_t iPlane = 0; iPlane < kNPlane; iPlane++) { + clscharge[iPlane] = 0.0; + nCluster[iPlane] = 0; + timebin[iPlane] = -1; + maxclscharge[iPlane] = 0.0; + } + + // Loop through all clusters associated to track TRDtrack + Int_t nClus = TRDtrack.GetNumberOfClusters(); // from Kalmantrack + for (Int_t iClus = 0; iClus < nClus; iClus++) { + Double_t charge = TRDtrack.GetClusterdQdl(iClus); + Int_t index = TRDtrack.GetClusterIndex(iClus); + AliTRDcluster *TRDcluster = (AliTRDcluster *) GetCluster(index); + if (!TRDcluster) continue; + Int_t tb = TRDcluster->GetLocalTimeBin(); + if (!tb) continue; + Int_t detector = TRDcluster->GetDetector(); + Int_t iPlane = fGeom->GetPlane(detector); + clscharge[iPlane] = clscharge[iPlane]+charge; + if(charge > maxclscharge[iPlane]) { + maxclscharge[iPlane] = charge; + timebin[iPlane] = tb; + } + nCluster[iPlane]++; + } // end of loop over cluster + + // Setting the fdEdxPlane and fTimBinPlane variabales + Double_t Total_ch = 0; + for (Int_t iPlane = 0; iPlane < kNPlane; iPlane++) { + if (nCluster[iPlane]) clscharge[iPlane] /= nCluster[iPlane]; + TRDtrack.SetPIDsignals(clscharge[iPlane], iPlane); + TRDtrack.SetPIDTimBin(timebin[iPlane], iPlane); + Total_ch= Total_ch+clscharge[iPlane]; + } + // Int_t i; + // Int_t nc=TRDtrack.GetNumberOfClusters(); + // Float_t dedx=0; + // for (i=0; i