#include <TObjArray.h>
#include "AliTRDgeometry.h"
-#include "AliTRDparameter.h"
#include "AliTRDpadPlane.h"
#include "AliTRDgeometryFull.h"
#include "AliTRDcluster.h"
#include "AliTRDtrack.h"
#include "AliESD.h"
+#include "AliTRDcalibDB.h"
+#include "AliTRDCommonParam.h"
+
+#include "TTreeStream.h"
+#include "TGraph.h"
#include "AliTRDtracker.h"
+#include "TLinearFitter.h"
+#include "AliRieman.h"
+#include "AliTrackPointArray.h"
+#include "AliAlignObj.h"
+#include "AliTRDReconstructor.h"
+//
ClassImp(AliTRDtracker)
+ClassImp(AliTRDseed)
- 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 Double_t AliTRDtracker::fgkMaxSnp = 0.95; // correspond to tan = 3
+ const Double_t AliTRDtracker::fgkMaxStep = 2.; // maximal step size in propagation
+
+
+//
+
-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)
{
for(Int_t i=0;i<kTrackingSectors;i++) fTrSec[i]=0;
for(Int_t j=0;j<5;j++)
for(Int_t k=0;k<18;k++) fHoles[j][k]=kFALSE;
+ fDebugStreamer = 0;
}
//____________________________________________________________________
AliTRDtracker::AliTRDtracker(const TFile *geomfile):AliTracker()
//
// Main constructor
//
-
- //Float_t fTzero = 0;
fAddTRDseeds = kFALSE;
fGeom = NULL;
TFile *in=(TFile*)geomfile;
if (!in->IsOpen()) {
printf("AliTRDtracker::AliTRDtracker(): geometry file is not open!\n");
- printf(" DETAIL TRD geometry and DEFAULT TRD parameter will be used\n");
+ printf(" FULL 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());
+ // 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 AliTRDgeometryFull();
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->Init();
-
savedir->cd();
- // fGeom->SetT0(fTzero);
fNclusters = 0;
fClusters = new TObjArray(2000);
for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) {
Int_t trS = CookSectorIndex(geomS);
- fTrSec[trS] = new AliTRDtrackingSector(fGeom, geomS, fPar);
+ fTrSec[trS] = new AliTRDtrackingSector(fGeom, geomS);
for (Int_t icham=0;icham<AliTRDgeometry::kNcham; icham++){
fHoles[icham][trS]=fGeom->IsHole(0,icham,geomS);
}
}
-
- AliTRDpadPlane *padPlane = fPar->GetPadPlane(0,0);
- Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle());
+ AliTRDpadPlane *padPlane = AliTRDCommonParam::Instance()->GetPadPlane(0,0);
+ Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle());
if(tiltAngle < 0.1) {
fNoTilt = kTRUE;
}
- fSY2corr = 0.2;
- fSZ2corr = 120.;
-
- if(fNoTilt && (tiltAngle > 0.1)) fSY2corr = fSY2corr + tiltAngle * 0.05;
-
+ fTimeBinsPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
- // 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->GetDriftVelocity()
- / fPar->GetSamplingFrequency();
- 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;
+ fDebugStreamer = new TTreeSRedirector("TRDdebug.root");
savedir->cd();
}
delete fSeeds;
}
delete fGeom;
- delete fPar;
for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) {
delete fTrSec[geomS];
}
-
+ if (fDebugStreamer) {
+ //fDebugStreamer->Close();
+ delete fDebugStreamer;
+ }
}
//_____________________________________________________________________
+
+Int_t AliTRDtracker::LocalToGlobalID(Int_t lid){
+ //
+ // transform internal TRD ID to global detector ID
+ //
+ Int_t isector = fGeom->GetSector(lid);
+ Int_t ichamber= fGeom->GetChamber(lid);
+ Int_t iplan = fGeom->GetPlane(lid);
+ //
+ AliAlignObj::ELayerID iLayer = AliAlignObj::kTRD1;
+ switch (iplan) {
+ case 0:
+ iLayer = AliAlignObj::kTRD1;
+ break;
+ case 1:
+ iLayer = AliAlignObj::kTRD2;
+ break;
+ case 2:
+ iLayer = AliAlignObj::kTRD3;
+ break;
+ case 3:
+ iLayer = AliAlignObj::kTRD4;
+ break;
+ case 4:
+ iLayer = AliAlignObj::kTRD5;
+ break;
+ case 5:
+ iLayer = AliAlignObj::kTRD6;
+ break;
+ };
+ Int_t modId = isector*fGeom->Ncham()+ichamber;
+ UShort_t volid = AliAlignObj::LayerToVolUID(iLayer,modId);
+ return volid;
+}
+
+Int_t AliTRDtracker::GlobalToLocalID(Int_t gid){
+ //
+ // transform global detector ID to local detector ID
+ //
+ Int_t modId=0;
+ AliAlignObj::ELayerID layerId = AliAlignObj::VolUIDToLayer(gid, modId);
+ Int_t isector = modId/fGeom->Ncham();
+ Int_t ichamber = modId%fGeom->Ncham();
+ Int_t iLayer = -1;
+ switch (layerId) {
+ case AliAlignObj::kTRD1:
+ iLayer = 0;
+ break;
+ case AliAlignObj::kTRD2:
+ iLayer = 1;
+ break;
+ case AliAlignObj::kTRD3:
+ iLayer = 2;
+ break;
+ case AliAlignObj::kTRD4:
+ iLayer = 3;
+ break;
+ case AliAlignObj::kTRD5:
+ iLayer = 4;
+ break;
+ case AliAlignObj::kTRD6:
+ iLayer = 5;
+ break;
+ default:
+ iLayer =-1;
+ }
+ if (iLayer<0) return -1;
+ Int_t lid = fGeom->GetDetector(iLayer,ichamber,isector);
+ return lid;
+}
+
+
+Bool_t AliTRDtracker::Transform(AliTRDcluster * cluster){
+ //
+ //
+ const Double_t kDriftCorrection = 1.01; // drift coeficient correction
+ const Double_t kExBcor = 0.001; // ExB coef correction
+ const Double_t kTime0Cor = 0.32; // time0 correction
+ //
+ // apply alignment and calibration to transform cluster
+ //
+ //
+ Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region
+ Double_t driftX = TMath::Max(cluster->GetX()-dxAmp*0.5,0.); // drift distance
+ //
+ Int_t plane = fGeom->GetPlane(cluster->GetDetector());
+ Double_t xplane = (Double_t) AliTRDgeometry::GetTime0(plane);
+ cluster->SetX(xplane- kDriftCorrection*(cluster->GetX()-kTime0Cor));
+ //
+ // ExB correction
+ //
+ Double_t vdrift = AliTRDcalibDB::Instance()->GetVdrift(cluster->GetDetector(),0,0);
+ Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(vdrift);
+ //
+ cluster->SetY(cluster->GetY() - driftX*(exB+ kExBcor));
+ return kTRUE;
+}
+
Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track) {
//
// Rotates the track when necessary
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){
+AliTRDcluster * AliTRDtracker::GetCluster(AliTRDtrack * track, Int_t plane, Int_t timebin, UInt_t &index){
//
//try to find cluster in the backup list
//
AliTRDcluster * cl =0;
- UInt_t *indexes = track->GetBackupIndexes();
+ Int_t *indexes = track->GetBackupIndexes();
for (UInt_t i=0;i<kMaxTimeBinIndex;i++){
if (indexes[i]==0) break;
AliTRDcluster * cli = (AliTRDcluster*)fClusters->UncheckedAt(indexes[i]);
Int_t iplane = fGeom->GetPlane(cli->GetDetector());
if (iplane==plane) {
cl = cli;
+ index = indexes[i];
break;
}
}
//
//return last updated plane
Int_t lastplane=0;
- UInt_t *indexes = track->GetBackupIndexes();
+ Int_t *indexes = track->GetBackupIndexes();
for (UInt_t i=0;i<kMaxTimeBinIndex;i++){
AliTRDcluster * cli = (AliTRDcluster*)fClusters->UncheckedAt(indexes[i]);
if (!cli) break;
Float_t foundMin = fgkMinClustersInTrack * timeBins;
Int_t nseed = 0;
Int_t found = 0;
- Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
+ // Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
Int_t n = event->GetNumberOfTracks();
for (Int_t i=0; i<n; i++) {
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);
+ FollowProlongation(t);
if (t.GetNumberOfClusters() >= foundMin) {
UseClusters(&t);
CookLabel(pt, 1-fgkLabelFraction);
found++;
// cout<<found<<'\r';
- if(PropagateToTPC(t)) {
+ Double_t xTPC = 250;
+ if (PropagateToX(t,xTPC,fgkMaxStep)) {
seed->UpdateTrackParams(pt, AliESDtrack::kTRDin);
}
delete seed2;
// after tracks from loaded seeds are found and the corresponding
// clusters are used, look for additional seeds from TRD
-
- 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; i<nSteps; i++) {
- Int_t outer=timeBins-1-i*step;
- Int_t inner=outer-gap;
-
- 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; i<nseed; i++) {
- AliTRDtrack *pt=(AliTRDtrack*)fSeeds->UncheckedAt(i), &t=*pt;
- FollowProlongation(t,innerTB);
- if (t.GetNumberOfClusters() >= foundMin) {
- UseClusters(&t);
- CookLabel(pt, 1-fgkLabelFraction);
- t.CookdEdx();
- found++;
-// cout<<found<<'\r';
- if(PropagateToTPC(t)) {
- AliESDtrack track;
- track.UpdateTrackParams(pt,AliESDtrack::kTRDin);
- event->AddTrack(&track);
- // track.SetTRDtrack(new AliTRDtrack(*pt));
- }
- }
- delete fSeeds->RemoveAt(i);
- fNseeds--;
- }
- }
- }
- }
cout<<"Total number of found tracks: "<<found<<endl;
Float_t p4 = track->GetC();
//
Int_t expectedClr = FollowBackProlongation(*track);
- /*
- // only debug purpose
- if (track->GetNumberOfClusters()<expectedClr/3){
- AliTRDtrack *track1 = new AliTRDtrack(*seed);
- track1->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 || TMath::Abs(track->GetPt())>0.8 ) {
//
//make backup for back propagation
Int_t foundClr = track->GetNumberOfClusters();
if (foundClr >= foundMin) {
track->CookdEdx();
+ CookdEdxTimBin(*track);
CookLabel(track, 1-fgkLabelFraction);
+ if (track->GetBackupTrack()) UseClusters(track->GetBackupTrack());
if(track->GetChi2()/track->GetNumberOfClusters()<4) { // sign only gold tracks
if (seed->GetKinkIndex(0)==0&&TMath::Abs(track->GetPt())<1.5 ) UseClusters(track);
}
Bool_t isGold = kFALSE;
if (track->GetChi2()/track->GetNumberOfClusters()<5) { //full gold track
- seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup);
+ // seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup);
+ if (track->GetBackupTrack()) seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup);
isGold = kTRUE;
}
if (!isGold && track->GetNCross()==0&&track->GetChi2()/track->GetNumberOfClusters()<7){ //almost gold track
- seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup);
+ // seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup);
+ if (track->GetBackupTrack()) seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup);
isGold = kTRUE;
}
if (!isGold && track->GetBackupTrack()){
isGold = kTRUE;
}
}
+ if (track->StatusForTOF()>0 &&track->fNCross==0 && Float_t(track->fN)/Float_t(track->fNExpected)>0.4){
+ //seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup);
+ }
}
}
+ // Debug part of tracking
+ TTreeSRedirector& cstream = *fDebugStreamer;
+ Int_t eventNr = event->GetEventNumber();
+ if (track->GetBackupTrack()){
+ cstream<<"Tracks"<<
+ "EventNr="<<eventNr<<
+ "ESD.="<<seed<<
+ "trd.="<<track<<
+ "trdback.="<<track->GetBackupTrack()<<
+ "\n";
+ }else{
+ cstream<<"Tracks"<<
+ "EventNr="<<eventNr<<
+ "ESD.="<<seed<<
+ "trd.="<<track<<
+ "trdback.="<<track<<
+ "\n";
+ }
//
- //Propagation to the TOF (I.Belikov)
- CookdEdxTimBin(*track);
+ //Propagation to the TOF (I.Belikov)
if (track->GetStop()==kFALSE){
Double_t xtof=371.;
delete track;
continue;
}
- Double_t xTOF0 = 365. ;
- PropagateToOuterPlane(*track,xTOF0);
+ Double_t xTOF0 = 370. ;
+ PropagateToX(*track,xTOF0,fgkMaxStep);
//
//energy losses taken to the account - check one more time
c2=track->GetC()*xtof - track->GetEta();
seed->SetTRDsignals(track->GetPIDsignals(i),i);
seed->SetTRDTimBin(track->GetPIDTimBin(i),i);
}
- seed->SetTRDtrack(new AliTRDtrack(*track));
+ // seed->SetTRDtrack(new AliTRDtrack(*track));
if (track->GetNumberOfClusters()>foundMin) found++;
}
}else{
seed->SetTRDsignals(track->GetPIDsignals(i),i);
seed->SetTRDTimBin(track->GetPIDTimBin(i),i);
}
- seed->SetTRDtrack(new AliTRDtrack(*track));
+ //seed->SetTRDtrack(new AliTRDtrack(*track));
found++;
}
}
- seed->SetTRDQuality(track->StatusForTOF());
+ seed->SetTRDQuality(track->StatusForTOF());
+ seed->SetTRDBudget(track->fBudget[0]);
+
delete track;
-
+ //
//End of propagation to the TOF
//if (foundClr>foundMin)
// seed->UpdateTrackParams(track, AliESDtrack::kTRDout);
cerr<<"Number of seeds: "<<fNseeds<<endl;
cerr<<"Number of back propagated TRD tracks: "<<found<<endl;
+
+ if (AliTRDReconstructor::SeedingOn()) MakeSeedsMI(3,5,event); //new seeding
fSeeds->Clear(); fNseeds=0;
delete [] index;
Float_t foundMin = fgkMinClustersInTrack * timeBins;
Int_t nseed = 0;
Int_t found = 0;
- Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
+ // Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
AliTRDtrack seed2;
Int_t n = event->GetNumberOfTracks();
continue;
}
nseed++;
- if (1/seed2.Get1Pt()>5.&& seed2.GetX()>260.) {
- Double_t oldx = seed2.GetX();
- seed2.PropagateTo(500.);
- seed2.ResetCovariance(1.);
- seed2.PropagateTo(oldx);
- }
- else{
- seed2.ResetCovariance(5.);
- }
+// if (1/seed2.Get1Pt()>1.5&& seed2.GetX()>260.) {
+// Double_t oldx = seed2.GetX();
+// seed2.PropagateTo(500.);
+// seed2.ResetCovariance(1.);
+// seed2.PropagateTo(oldx);
+// }
+// else{
+// seed2.ResetCovariance(5.);
+// }
AliTRDtrack *pt = new AliTRDtrack(seed2,seed2.GetAlpha());
- UInt_t * indexes2 = seed2.GetIndexes();
-// for (Int_t i=0;i<kNPlane;i++) {
-// pt->SetPIDsignals(seed2.GetPIDsignals(i),i);
-// pt->SetPIDTimBin(seed2.GetPIDTimBin(i),i);
-// }
+ Int_t * indexes2 = seed2.GetIndexes();
+ for (Int_t i=0;i<kNPlane;i++) {
+ pt->SetPIDsignals(seed2.GetPIDsignals(i),i);
+ pt->SetPIDTimBin(seed2.GetPIDTimBin(i),i);
+ }
- UInt_t * indexes3 = pt->GetBackupIndexes();
+ Int_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);
+ FollowProlongation(t);
if (t.GetNumberOfClusters() >= foundMin) {
// UseClusters(&t);
//CookLabel(pt, 1-fgkLabelFraction);
- // t.CookdEdx();
+ t.CookdEdx();
+ CookdEdxTimBin(t);
}
found++;
// cout<<found<<'\r';
-
- if(PropagateToTPC(t)) {
+ Double_t xTPC = 250;
+ if(PropagateToX(t,xTPC,fgkMaxStep)) {
seed->UpdateTrackParams(pt, AliESDtrack::kTRDrefit);
- // for (Int_t i=0;i<kNPlane;i++) {
-// seed->SetTRDsignals(pt->GetPIDsignals(i),i);
-// seed->SetTRDTimBin(pt->GetPIDTimBin(i),i);
-// }
+ for (Int_t i=0;i<kNPlane;i++) {
+ seed->SetTRDsignals(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.);
+ if (PropagateToX(*pt2,xTPC,fgkMaxStep)) {
+ //pt2->CookdEdx(0.,1.);
+ pt2->CookdEdx( ); // Modification by PS
CookdEdxTimBin(*pt2);
seed->UpdateTrackParams(pt2, AliESDtrack::kTRDrefit);
- // for (Int_t i=0;i<kNPlane;i++) {
-// seed->SetTRDsignals(pt2->GetPIDsignals(i),i);
-// seed->SetTRDTimBin(pt2->GetPIDTimBin(i),i);
-// }
+ for (Int_t i=0;i<kNPlane;i++) {
+ seed->SetTRDsignals(pt2->GetPIDsignals(i),i);
+ seed->SetTRDTimBin(pt2->GetPIDTimBin(i),i);
+ }
}
delete pt2;
}
}
+
+
+
//---------------------------------------------------------------------------
-Int_t AliTRDtracker::FollowProlongation(AliTRDtrack& t, Int_t rf)
+Int_t AliTRDtracker::FollowProlongation(AliTRDtrack& t)
{
// 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
-
- 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;
+ // GeoManager used to estimate mean density
+ Int_t sector;
Int_t lastplane = GetLastPlane(&t);
-
- Int_t trackIndex = t.GetLabel();
-
- Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5);
-
- Int_t tryAgain=fMaxGap;
-
- 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;
-
+ Double_t radLength = 0.0;
+ Double_t rho = 0.0;
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) {
-
+ //
+ //
+ //
+ for (Int_t iplane = lastplane; iplane>=0; iplane--){
+ //
+ Int_t row0 = GetGlobalTimeBin(0, iplane,GetTimeBinsPerPlane()-1);
+ Int_t rowlast = GetGlobalTimeBin(0, iplane,0);
+ //
+ // propagate track close to the plane if neccessary
+ //
+ Double_t currentx = fTrSec[0]->GetLayer(rowlast)->GetX();
+ if (currentx < -fgkMaxStep +t.GetX()){
+ //propagate closer to chamber - safety space fgkMaxStep
+ if (!PropagateToX(t, currentx+fgkMaxStep, fgkMaxStep)) break;
+ }
+ if (!AdjustSector(&t)) break;
+ //
+ // get material budget
+ //
+ Double_t xyz0[3],xyz1[3],param[7],x,y,z;
+ t.GetGlobalXYZ(xyz0[0],xyz0[1],xyz0[2]); //starting global position
+ // end global position
+ x = fTrSec[0]->GetLayer(row0)->GetX();
+ if (!t.GetProlongation(x,y,z)) break;
+ xyz1[0] = x*TMath::Cos(t.GetAlpha())-y*TMath::Sin(t.GetAlpha());
+ xyz1[1] = +x*TMath::Sin(t.GetAlpha())+y*TMath::Cos(t.GetAlpha());
+ xyz1[2] = z;
+ AliKalmanTrack::MeanMaterialBudget(xyz0,xyz1,param);
+ rho = param[0];
+ radLength = param[1]; // get mean propagation parameters
+ //
+ // propagate nad update
+ //
+ sector = t.GetSector();
+ // for (Int_t itime=GetTimeBinsPerPlane()-1;itime>=0;itime--) {
+ for (Int_t itime=0 ;itime<GetTimeBinsPerPlane();itime++) {
+ Int_t ilayer = GetGlobalTimeBin(0, iplane,itime);
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;
-
-
+ t.fNExpected++;
+ if (t.fX>345) t.fNExpectedLast++;
+ AliTRDpropagationLayer& timeBin=*(fTrSec[sector]->GetLayer(ilayer));
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&&fVocal) {
- Float_t minDY = 1000000;
- for (Int_t i=0; i<timeBin; i++) {
- AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]);
- if((c->GetLabel(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
-
+ x = timeBin.GetX();
if (timeBin) {
- //
- //find cluster in history
- cl =0;
-
AliTRDcluster * cl0 = timeBin[0];
- if (!cl0) {
- continue;
- }
+ if (!cl0) continue; // no clusters in given time bin
Int_t plane = fGeom->GetPlane(cl0->GetDetector());
if (plane>lastplane) continue;
Int_t timebin = cl0->GetLocalTimeBin();
- AliTRDcluster * cl2= GetCluster(&t,plane, timebin);
+ AliTRDcluster * cl2= GetCluster(&t,plane, timebin,index);
+ //
if (cl2) {
cl =cl2;
Double_t h01 = GetTiltFactor(cl);
maxChi2=t.GetPredictedChi2(cl,h01);
- }
- if ((!cl) && road>fgkWideRoad) {
- //if (t.GetNumberOfClusters()>4)
- // cerr<<t.GetNumberOfClusters()
- // <<"FindProlongation warning: Too broad road !\n";
- continue;
- }
-
- /*
- if(!cl){
- Int_t maxn = timeBin;
- for (Int_t i=timeBin.Find(y-road); i<maxn; i++) {
- AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]);
- if (c->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) {
- Int_t maxn = timeBin;
- for (Int_t i=timeBin.Find(y-road); i<maxn; i++) {
- AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]);
-
- if (c->GetY() > 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();
+ // if (cl->GetNPads()<5)
+ Double_t dxsample = timeBin.GetdX();
+ t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
Double_t h01 = GetTiltFactor(cl);
-
- if (cl->GetNPads()<5)
- t.SetSampledEdx(cl->GetQ()/dx);
- //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.fX>345){
+ t.fNLast++;
+ t.fChi2Last+=maxChi2;
+ }
+ Double_t xcluster = cl->GetX();
+ t.PropagateTo(xcluster,radLength,rho);
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--;
- }
+ }
+ }
}
- }
+ }
}
- return expectedNumberOfClusters;
-
-
+ return expectedNumberOfClusters;
}
-//___________________________________________________________________
+
+
+
+//___________________________________________________________________
Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack& t)
{
+
// Starting from current radial position of track <t> 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
+ // Use GEO manager for material Description
-
- Float_t wIndex, wTB, wChi2;
- Float_t wYrt, wYclosest, wYcorrect, wYwindow;
- Float_t wZrt, wZclosest, wZcorrect, wZwindow;
- 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 sector;
Int_t clusters[1000];
for (Int_t i=0;i<1000;i++) clusters[i]=-1;
-
- Int_t outerTB = fTrSec[0]->GetOuterTimeBin();
- Double_t radLength, rho, x, dx, y, ymax = 0, z;
- Bool_t lookForCluster;
-
+ Double_t radLength = 0.0;
+ Double_t rho = 0.0;
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()); nr<outerTB+1; nr++) {
-
- y = t.GetY();
- z = t.GetZ();
-
- // first propagate to the outer surface of the current time bin
-
- s = t.GetSector();
- 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;
- // if (!AdjustSector(&t)) break;
- //
- // MI -fix untill correct material desription will be implemented
+ Float_t ratio0=0;
+ AliTRDtracklet tracklet;
+ //
+ //
+ for (Int_t iplane = 0; iplane<kNPlane; iplane++){
+ Int_t row0 = GetGlobalTimeBin(0, iplane,GetTimeBinsPerPlane()-1);
+ Int_t rowlast = GetGlobalTimeBin(0, iplane,0);
//
- Float_t angle = t.GetAlpha(); // MI - if rotation - we go through the material
- if (!AdjustSector(&t)) break;
- Int_t cross = kFALSE;
- Int_t crosz = 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,crosz=kTRUE;} // we are in the frame
- if (currentzone>-10){ // layer knows where we are
- if (zone==-10) zone = currentzone;
- if (zone!=currentzone) {
- cross=kTRUE;
- crosz=kTRUE;
- }
- }
- if (TMath::Abs(t.GetSnp())>0.8 && t.GetBackupTrack()==0) t.MakeBackupTrack();
- if (cross) {
- if (t.GetNCross()==0 && t.GetBackupTrack()==0) t.MakeBackupTrack();
- t.IncCross();
- if (t.GetNCross()>4) break;
- }
+ Double_t currentx = fTrSec[0]->GetLayer(row0)->GetX();
+ if (currentx<t.GetX()) continue;
//
+ // propagate closer to chamber if neccessary
//
- 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);
- if (crosz){
- rho = 1000*2.7; radLength = 24.01; //TEMPORARY - aluminium in between z - will be detected using GeoModeler in future versions
+ if (currentx > fgkMaxStep +t.GetX()){
+ if (!PropagateToX(t, currentx-fgkMaxStep, fgkMaxStep)) break;
}
- 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;
-
- if (TMath::Abs(t.GetSnp())>0.95) 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) {
-// if (clusters[nr]==-1) {
-// FindClusters(s,nr,nr+30,&t,clusters);
-// }
-
+ if (TMath::Abs(t.GetSnp())>fgkMaxSnp) break;
+ //
+ // get material budget inside of chamber
+ //
+ Double_t xyz0[3],xyz1[3],param[7],x,y,z;
+ t.GetGlobalXYZ(xyz0[0],xyz0[1],xyz0[2]); //starting global position
+ // end global position
+ x = fTrSec[0]->GetLayer(rowlast)->GetX();
+ if (!t.GetProlongation(x,y,z)) break;
+ xyz1[0] = x*TMath::Cos(t.GetAlpha())-y*TMath::Sin(t.GetAlpha());
+ xyz1[1] = +x*TMath::Sin(t.GetAlpha())+y*TMath::Cos(t.GetAlpha());
+ xyz1[2] = z;
+ AliKalmanTrack::MeanMaterialBudget(xyz0,xyz1,param);
+ rho = param[0];
+ radLength = param[1]; // get mean propagation parameters
+ //
+ // Find clusters
+ //
+ sector = t.GetSector();
+ Float_t ncl = FindClusters(sector,row0,rowlast,&t,clusters,tracklet);
+ if (tracklet.GetN()<GetTimeBinsPerPlane()/3) continue;
+ //
+ // Propagate and update track
+ //
+ for (Int_t itime= GetTimeBinsPerPlane()-1;itime>=0;itime--) {
+ Int_t ilayer = GetGlobalTimeBin(0, iplane,itime);
expectedNumberOfClusters++;
t.fNExpected++;
if (t.fX>345) t.fNExpectedLast++;
- 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;
- 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<<t.GetNumberOfClusters()
- <<"FindProlongation warning: Too broad road !\n";
- return 0;
- }
-
+ AliTRDpropagationLayer& timeBin=*(fTrSec[sector]->GetLayer(ilayer));
AliTRDcluster *cl=0;
UInt_t index=0;
-
Double_t maxChi2=fgkMaxChi2;
-
- if (isNewLayer) {
- road = 3 * road;
- //sz2 = 3 * sz2;
- maxChi2 = 10 * fgkMaxChi2;
- }
-
- if (nRefPlane == fgkFirstPlane) maxChi2 = 20 * fgkMaxChi2;
- if (nRefPlane == fgkFirstPlane+2) maxChi2 = 15 * fgkMaxChi2;
- if (t.GetNRotate() > 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&&fVocal) {
- minDY = 1000000;
- for (Int_t i=0; i<timeBin; i++) {
- AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]);
- if((c->GetLabel(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) {
- /*
- if (clusters[nr+1]>0) {
- index = clusters[nr+1];
+ x = timeBin.GetX();
+ //
+ if (timeBin) {
+ if (clusters[ilayer]>0) {
+ index = clusters[ilayer];
cl = (AliTRDcluster*)GetCluster(index);
Double_t h01 = GetTiltFactor(cl);
maxChi2=t.GetPredictedChi2(cl,h01);
- }
- */
-
- if (!cl){
- Int_t maxn = timeBin;
- for (Int_t i=timeBin.Find(y-road); i<maxn; i++) {
- AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]);
- if (c->GetY() > 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) {
- Int_t maxn = timeBin;
- for (Int_t i=timeBin.Find(y-road); i<maxn; i++) {
- AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]);
-
- if (c->GetY() > y+road) break;
- if (c->IsUsed() > 0) continue;
- // if((c->GetZ()-z)*(c->GetZ()-z) > 2.25 * 12 * sz2) continue;
- if((c->GetZ()-z)*(c->GetZ()-z) > 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();
- if (cl->GetNPads()<5)
- t.SetSampledEdx(cl->GetQ()/dx);
+ // if (cl->GetNPads()<5)
+ Double_t dxsample = timeBin.GetdX();
+ t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
Double_t h01 = GetTiltFactor(cl);
Int_t det = cl->GetDetector();
Int_t plane = fGeom->GetPlane(det);
t.fNLast++;
t.fChi2Last+=maxChi2;
}
+ Double_t xcluster = cl->GetX();
+ t.PropagateTo(xcluster,radLength,rho);
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--;
- }
-
- isNewLayer = kFALSE;
-
+ //
+ // reset material budget if 2 consecutive gold
+ if (plane>0)
+ if (t.fTracklets[plane].GetN()+t.fTracklets[plane-1].GetN()>20){
+ t.fBudget[2] = 0;
+ }
+ }
}
- }
+ }
+ ratio0 = ncl/Float_t(fTimeBinsPerPlane);
+ Float_t ratio1 = Float_t(t.fN+1)/Float_t(t.fNExpected+1.);
+ if (tracklet.GetChi2()<18.&&ratio0>0.8 && ratio1>0.6 && ratio0+ratio1>1.5 && t.GetNCross()==0 && TMath::Abs(t.GetSnp())<0.85&&t.fN>20){
+ t.MakeBackupTrack(); // make backup of the track until is gold
+ }
+
}
- if (nr<outerTB)
- t.SetStop(kTRUE);
- else
- t.SetStop(kFALSE);
- return expectedNumberOfClusters;
-
-
+ //
+ return expectedNumberOfClusters;
}
-//---------------------------------------------------------------------------
-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);
- 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);
- if (cl->GetNPads()<5) t.SetSampledEdx(cl->GetQ()/dx);
-
- //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)
+Int_t AliTRDtracker::PropagateToX(AliTRDtrack& t, Double_t xToGo, Double_t maxStep)
{
// Starting from current radial position of track <t> this function
// extrapolates the track up to radial position <xToGo>.
// 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); nr<plToGo; 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; 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;
+ const Double_t kEpsilon = 0.00001;
+ // Double_t tanmax = TMath::Tan(0.5*AliTRDgeometry::GetAlpha());
+ Double_t xpos = t.GetX();
+ Double_t dir = (xpos<xToGo) ? 1.:-1.;
+ //
+ while ( (xToGo-xpos)*dir > kEpsilon){
+ Double_t step = dir*TMath::Min(TMath::Abs(xToGo-xpos), maxStep);
+ //
+ Double_t xyz0[3],xyz1[3],param[7],x,y,z;
+ t.GetGlobalXYZ(xyz0[0],xyz0[1],xyz0[2]); //starting global position
+ x = xpos+step;
+ //
+ if (!t.GetProlongation(x,y,z)) return 0; // no prolongation
+ //
+ xyz1[0] = x*TMath::Cos(t.GetAlpha())-y*TMath::Sin(t.GetAlpha());
+ xyz1[1] = +x*TMath::Sin(t.GetAlpha())+y*TMath::Cos(t.GetAlpha());
+ xyz1[2] = z;
+ //
+ AliKalmanTrack::MeanMaterialBudget(xyz0,xyz1,param);
+ if (!t.PropagateTo(x,param[1],param[0])) return 0;
+ AdjustSector(&t);
+ xpos = t.GetX();
}
return 1;
-}
-
-//___________________________________________________________________
-
-Int_t AliTRDtracker::PropagateToTPC(AliTRDtrack& t)
-{
- // Starting from current radial position of track <t> 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)
Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb);
index=ncl;
+ //
+ // apply pos correction
+ Transform(c);
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::MakeSeeds(Int_t inner, Int_t outer, Int_t turn)
+void AliTRDtracker::MakeSeedsMI(Int_t /*inner*/, Int_t /*outer*/, AliESD * esd)
{
- // Creates track seeds using clusters in timeBins=i1,i2
+ //
+ // Creates seeds using clusters between position inner plane and outer plane
+ //
+ const Double_t maxtheta = 1;
+ const Double_t maxphi = 2.0;
+ //
+ const Double_t kRoad0y = 6; // road for middle cluster
+ const Double_t kRoad0z = 8.5; // road for middle cluster
+ //
+ const Double_t kRoad1y = 2; // road in y for seeded cluster
+ const Double_t kRoad1z = 20; // road in z for seeded cluster
+ //
+ const Double_t kRoad2y = 3; // road in y for extrapolated cluster
+ const Double_t kRoad2z = 20; // road in z for extrapolated cluster
+ const Int_t maxseed = 3000;
+ Int_t maxSec=AliTRDgeometry::kNsect;
- if(turn > 2) {
- cerr<<"MakeSeeds: turn "<<turn<<" exceeds the limit of 2"<<endl;
- return;
+ //
+ // linear fitters in planes
+ TLinearFitter fitterTC(2,"hyp2"); // fitting with tilting pads - kz fixed - kz= Z/x, + vertex const
+ TLinearFitter fitterT2(4,"hyp4"); // fitting with tilting pads - kz not fixed
+ fitterTC.StoreData(kTRUE);
+ fitterT2.StoreData(kTRUE);
+ AliRieman rieman(1000); // rieman fitter
+ AliRieman rieman2(1000); // rieman fitter
+ //
+ // find the maximal and minimal layer for the planes
+ //
+ Int_t layers[6][2];
+ AliTRDpropagationLayer* reflayers[6];
+ for (Int_t i=0;i<6;i++){layers[i][0]=10000; layers[i][1]=0;}
+ for (Int_t ns=0;ns<maxSec;ns++){
+ for (Int_t ilayer=0;ilayer<fTrSec[ns]->GetNumberOfLayers();ilayer++){
+ AliTRDpropagationLayer& layer=*(fTrSec[ns]->GetLayer(ilayer));
+ if (layer==0) continue;
+ Int_t det = layer[0]->GetDetector();
+ Int_t plane = fGeom->GetPlane(det);
+ if (ilayer<layers[plane][0]) layers[plane][0] = ilayer;
+ if (ilayer>layers[plane][1]) layers[plane][1] = ilayer;
+ }
}
+ //
+ AliTRDpadPlane *padPlane = AliTRDCommonParam::Instance()->GetPadPlane(0,0);
+ Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle());
+ Double_t hL[6]; // tilting angle
+ Double_t xcl[6]; // x - position of reference cluster
+ Double_t ycl[6]; // y - position of reference cluster
+ Double_t zcl[6]; // z - position of reference cluster
+ AliTRDcluster *cl[6]={0,0,0,0,0,0}; // seeding clusters
+ Float_t padlength[6]={10,10,10,10,10,10}; //current pad-length
+ Double_t chi2R =0, chi2Z=0;
+ Double_t chi2RF =0, chi2ZF=0;
+ //
+ Int_t nclusters; // total number of clusters
+ for (Int_t i=0;i<6;i++) {hL[i]=h01; if (i%2==1) hL[i]*=-1.;}
+ //
+ //
+ // registered seed
+ AliTRDseed *pseed = new AliTRDseed[maxseed*6];
+ AliTRDseed *seed[maxseed];
+ for (Int_t iseed=0;iseed<maxseed;iseed++) seed[iseed]= &pseed[iseed*6];
+ AliTRDseed *cseed = seed[0];
+ //
+ Double_t seedquality[maxseed];
+ Double_t seedquality2[maxseed];
+ Double_t seedparams[maxseed][7];
+ Int_t seedlayer[maxseed];
+ Int_t registered =0;
+ Int_t sort[maxseed];
+ //
+ // seeding part
+ //
+ for (Int_t ns = 0; ns<maxSec; ns++){ //loop over sectors
+ //for (Int_t ns = 0; ns<5; ns++){ //loop over sectors
+ registered = 0; // reset registerd seed counter
+ cseed = seed[registered];
+ Float_t iter=0;
+ for (Int_t sLayer=2; sLayer>=0;sLayer--){
+ //for (Int_t dseed=5;dseed<15; dseed+=3){ //loop over central seeding time bins
+ iter+=1.;
+ Int_t dseed = 5+Int_t(iter)*3;
+ // Initialize seeding layers
+ for (Int_t ilayer=0;ilayer<6;ilayer++){
+ reflayers[ilayer] = fTrSec[ns]->GetLayer(layers[ilayer][1]-dseed);
+ xcl[ilayer] = reflayers[ilayer]->GetX();
+ }
+ //
+ Double_t xref = (xcl[sLayer+1] + xcl[sLayer+2])*0.5;
+ AliTRDpropagationLayer& layer0=*reflayers[sLayer+0];
+ AliTRDpropagationLayer& layer1=*reflayers[sLayer+1];
+ AliTRDpropagationLayer& layer2=*reflayers[sLayer+2];
+ AliTRDpropagationLayer& layer3=*reflayers[sLayer+3];
+ //
+ Int_t maxn3 = layer3;
+ for (Int_t icl3=0;icl3<maxn3;icl3++){
+ AliTRDcluster *cl3 = layer3[icl3];
+ if (!cl3) continue;
+ padlength[sLayer+3] = TMath::Sqrt(cl3->GetSigmaZ2()*12.);
+ ycl[sLayer+3] = cl3->GetY();
+ zcl[sLayer+3] = cl3->GetZ();
+ Float_t yymin0 = ycl[sLayer+3] - 1- maxphi *(xcl[sLayer+3]-xcl[sLayer+0]);
+ Float_t yymax0 = ycl[sLayer+3] + 1+ maxphi *(xcl[sLayer+3]-xcl[sLayer+0]);
+ Int_t maxn0 = layer0; //
+ for (Int_t icl0=layer0.Find(yymin0);icl0<maxn0;icl0++){
+ AliTRDcluster *cl0 = layer0[icl0];
+ if (!cl0) continue;
+ if (cl3->IsUsed()&&cl0->IsUsed()) continue;
+ ycl[sLayer+0] = cl0->GetY();
+ zcl[sLayer+0] = cl0->GetZ();
+ if ( ycl[sLayer+0]>yymax0) break;
+ Double_t tanphi = (ycl[sLayer+3]-ycl[sLayer+0])/(xcl[sLayer+3]-xcl[sLayer+0]);
+ if (TMath::Abs(tanphi)>maxphi) continue;
+ Double_t tantheta = (zcl[sLayer+3]-zcl[sLayer+0])/(xcl[sLayer+3]-xcl[sLayer+0]);
+ if (TMath::Abs(tantheta)>maxtheta) continue;
+ padlength[sLayer+0] = TMath::Sqrt(cl0->GetSigmaZ2()*12.);
+ //
+ // expected position in 1 layer
+ Double_t y1exp = ycl[sLayer+0]+(tanphi) *(xcl[sLayer+1]-xcl[sLayer+0]);
+ Double_t z1exp = zcl[sLayer+0]+(tantheta)*(xcl[sLayer+1]-xcl[sLayer+0]);
+ Float_t yymin1 = y1exp - kRoad0y-tanphi;
+ Float_t yymax1 = y1exp + kRoad0y+tanphi;
+ Int_t maxn1 = layer1; //
+ //
+ for (Int_t icl1=layer1.Find(yymin1);icl1<maxn1;icl1++){
+ AliTRDcluster *cl1 = layer1[icl1];
+ if (!cl1) continue;
+ Int_t nusedCl = 0;
+ if (cl3->IsUsed()) nusedCl++;
+ if (cl0->IsUsed()) nusedCl++;
+ if (cl1->IsUsed()) nusedCl++;
+ if (nusedCl>1) continue;
+ ycl[sLayer+1] = cl1->GetY();
+ zcl[sLayer+1] = cl1->GetZ();
+ if ( ycl[sLayer+1]>yymax1) break;
+ if (TMath::Abs(ycl[sLayer+1]-y1exp)>kRoad0y+tanphi) continue;
+ if (TMath::Abs(zcl[sLayer+1]-z1exp)>kRoad0z) continue;
+ padlength[sLayer+1] = TMath::Sqrt(cl1->GetSigmaZ2()*12.);
+ //
+ Double_t y2exp = ycl[sLayer+0]+(tanphi) *(xcl[sLayer+2]-xcl[sLayer+0])+(ycl[sLayer+1]-y1exp);
+ Double_t z2exp = zcl[sLayer+0]+(tantheta)*(xcl[sLayer+2]-xcl[sLayer+0]);
+ Int_t index2 = layer2.FindNearestCluster(y2exp,z2exp,kRoad1y, kRoad1z);
+ if (index2<=0) continue;
+ AliTRDcluster *cl2 = (AliTRDcluster*)GetCluster(index2);
+ padlength[sLayer+2] = TMath::Sqrt(cl2->GetSigmaZ2()*12.);
+ ycl[sLayer+2] = cl2->GetY();
+ zcl[sLayer+2] = cl2->GetZ();
+ if (TMath::Abs(cl2->GetZ()-z2exp)>kRoad0z) continue;
+ //
+ rieman.Reset();
+ rieman.AddPoint(xcl[sLayer+0],ycl[sLayer+0],zcl[sLayer+0],1,10);
+ rieman.AddPoint(xcl[sLayer+1],ycl[sLayer+1],zcl[sLayer+1],1,10);
+ rieman.AddPoint(xcl[sLayer+3],ycl[sLayer+3],zcl[sLayer+3],1,10);
+ rieman.AddPoint(xcl[sLayer+2],ycl[sLayer+2],zcl[sLayer+2],1,10);
+ rieman.Update();
+ //
+ // reset fitter
+ for (Int_t iLayer=0;iLayer<6;iLayer++){
+ cseed[iLayer].Reset();
+ }
+ chi2Z =0.; chi2R=0.;
+ for (Int_t iLayer=0;iLayer<4;iLayer++){
+ cseed[sLayer+iLayer].fZref[0] = rieman.GetZat(xcl[sLayer+iLayer]);
+ chi2Z += (cseed[sLayer+iLayer].fZref[0]- zcl[sLayer+iLayer])*
+ (cseed[sLayer+iLayer].fZref[0]- zcl[sLayer+iLayer]);
+ cseed[sLayer+iLayer].fZref[1] = rieman.GetDZat(xcl[sLayer+iLayer]);
+ cseed[sLayer+iLayer].fYref[0] = rieman.GetYat(xcl[sLayer+iLayer]);
+ chi2R += (cseed[sLayer+iLayer].fYref[0]- ycl[sLayer+iLayer])*
+ (cseed[sLayer+iLayer].fYref[0]- ycl[sLayer+iLayer]);
+ cseed[sLayer+iLayer].fYref[1] = rieman.GetDYat(xcl[sLayer+iLayer]);
+ }
+ if (TMath::Sqrt(chi2R)>1./iter) continue;
+ if (TMath::Sqrt(chi2Z)>7./iter) continue;
+ //
+ //
+ //
+ Float_t minmax[2]={-100,100};
+ for (Int_t iLayer=0;iLayer<4;iLayer++){
+ Float_t max = zcl[sLayer+iLayer]+padlength[sLayer+iLayer]*0.5+1 -cseed[sLayer+iLayer].fZref[0];
+ if (max<minmax[1]) minmax[1]=max;
+ Float_t min = zcl[sLayer+iLayer]-padlength[sLayer+iLayer]*0.5-1 -cseed[sLayer+iLayer].fZref[0];
+ if (min>minmax[0]) minmax[0]=min;
+ }
+ Bool_t isFake = kFALSE;
+ if (cl0->GetLabel(0)!=cl3->GetLabel(0)) isFake = kTRUE;
+ if (cl1->GetLabel(0)!=cl3->GetLabel(0)) isFake = kTRUE;
+ if (cl2->GetLabel(0)!=cl3->GetLabel(0)) isFake = kTRUE;
+ if ((!isFake) || (icl3%10)==0 ){ //debugging print
+ TTreeSRedirector& cstream = *fDebugStreamer;
+ cstream<<"Seeds0"<<
+ "isFake="<<isFake<<
+ "Cl0.="<<cl0<<
+ "Cl1.="<<cl1<<
+ "Cl2.="<<cl2<<
+ "Cl3.="<<cl3<<
+ "Xref="<<xref<<
+ "X0="<<xcl[sLayer+0]<<
+ "X1="<<xcl[sLayer+1]<<
+ "X2="<<xcl[sLayer+2]<<
+ "X3="<<xcl[sLayer+3]<<
+ "Y2exp="<<y2exp<<
+ "Z2exp="<<z2exp<<
+ "Chi2R="<<chi2R<<
+ "Chi2Z="<<chi2Z<<
+ "Seed0.="<<&cseed[sLayer+0]<<
+ "Seed1.="<<&cseed[sLayer+1]<<
+ "Seed2.="<<&cseed[sLayer+2]<<
+ "Seed3.="<<&cseed[sLayer+3]<<
+ "Zmin="<<minmax[0]<<
+ "Zmax="<<minmax[1]<<
+ "\n";
+ }
+
+ //<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ //<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ //<<<<<<<<<<<<<<<<<< FIT SEEDING PART <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ //<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ cl[sLayer+0] = cl0;
+ cl[sLayer+1] = cl1;
+ cl[sLayer+2] = cl2;
+ cl[sLayer+3] = cl3;
+ Bool_t isOK=kTRUE;
+ for (Int_t jLayer=0;jLayer<4;jLayer++){
+ cseed[sLayer+jLayer].fTilt = hL[sLayer+jLayer];
+ cseed[sLayer+jLayer].fPadLength = padlength[sLayer+jLayer];
+ cseed[sLayer+jLayer].fX0 = xcl[sLayer+jLayer];
+ for (Int_t iter=0; iter<2; iter++){
+ //
+ // in iteration 0 we try only one pad-row
+ // if quality not sufficient we try 2 pad-rows - about 5% of tracks cross 2 pad-rows
+ //
+ AliTRDseed tseed = cseed[sLayer+jLayer];
+ Float_t roadz = padlength[sLayer+jLayer]*0.5;
+ if (iter>0) roadz = padlength[sLayer+jLayer];
+ //
+ Float_t quality =10000;
+ for (Int_t iTime=2;iTime<20;iTime++){
+ AliTRDpropagationLayer& layer = *(fTrSec[ns]->GetLayer(layers[sLayer+jLayer][1]-iTime));
+ Double_t dxlayer= layer.GetX()-xcl[sLayer+jLayer];
+ Double_t zexp = cl[sLayer+jLayer]->GetZ() ;
+ if (iter>0){
+ // try 2 pad-rows in second iteration
+ zexp = tseed.fZref[0]+ tseed.fZref[1]*dxlayer;
+ if (zexp>cl[sLayer+jLayer]->GetZ()) zexp = cl[sLayer+jLayer]->GetZ()+padlength[sLayer+jLayer]*0.5;
+ if (zexp<cl[sLayer+jLayer]->GetZ()) zexp = cl[sLayer+jLayer]->GetZ()-padlength[sLayer+jLayer]*0.5;
+ }
+ //
+ Double_t yexp = tseed.fYref[0]+
+ tseed.fYref[1]*dxlayer;
+ Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y, roadz);
+ if (index<=0) continue;
+ AliTRDcluster *cl = (AliTRDcluster*)GetCluster(index);
+ //
+ tseed.fIndexes[iTime] = index;
+ tseed.fClusters[iTime] = cl; // register cluster
+ tseed.fX[iTime] = dxlayer; // register cluster
+ tseed.fY[iTime] = cl->GetY(); // register cluster
+ tseed.fZ[iTime] = cl->GetZ(); // register cluster
+ }
+ tseed.Update();
+ //count the number of clusters and distortions into quality
+ Float_t dangle = tseed.fYfit[1]-tseed.fYref[1];
+ Float_t tquality = (18-tseed.fN2)/2. + TMath::Abs(dangle)/0.1+
+ TMath::Abs(tseed.fYfit[0]-tseed.fYref[0])/0.2+
+ 2.*TMath::Abs(tseed.fMeanz-tseed.fZref[0])/padlength[jLayer];
+ if (iter==0 && tseed.isOK()) {
+ cseed[sLayer+jLayer] = tseed;
+ quality = tquality;
+ if (tquality<5) break;
+ }
+ if (tseed.isOK() && tquality<quality)
+ cseed[sLayer+jLayer] = tseed;
+ }
+ if (!cseed[sLayer+jLayer].isOK()){
+ isOK = kFALSE;
+ break;
+ }
+ cseed[sLayer+jLayer].CookLabels();
+ cseed[sLayer+jLayer].UpdateUsed();
+ nusedCl+= cseed[sLayer+jLayer].fNUsed;
+ if (nusedCl>25){
+ isOK = kFALSE;
+ break;
+ }
+ }
+ //
+ if (!isOK) continue;
+ nclusters=0;
+ for (Int_t iLayer=0;iLayer<4;iLayer++){
+ if (cseed[sLayer+iLayer].isOK()){
+ nclusters+=cseed[sLayer+iLayer].fN2;
+ }
+ }
+ //
+ // iteration 0
+ rieman.Reset();
+ for (Int_t iLayer=0;iLayer<4;iLayer++){
+ rieman.AddPoint(xcl[sLayer+iLayer],cseed[sLayer+iLayer].fYfitR[0],
+ cseed[sLayer+iLayer].fZProb,1,10);
+ }
+ rieman.Update();
+ //
+ //
+ chi2R =0; chi2Z=0;
+ for (Int_t iLayer=0;iLayer<4;iLayer++){
+ cseed[sLayer+iLayer].fYref[0] = rieman.GetYat(xcl[sLayer+iLayer]);
+ chi2R += (cseed[sLayer+iLayer].fYref[0]-cseed[sLayer+iLayer].fYfitR[0])*
+ (cseed[sLayer+iLayer].fYref[0]-cseed[sLayer+iLayer].fYfitR[0]);
+ cseed[sLayer+iLayer].fYref[1] = rieman.GetDYat(xcl[sLayer+iLayer]);
+ cseed[sLayer+iLayer].fZref[0] = rieman.GetZat(xcl[sLayer+iLayer]);
+ chi2Z += (cseed[sLayer+iLayer].fZref[0]- cseed[sLayer+iLayer].fMeanz)*
+ (cseed[sLayer+iLayer].fZref[0]- cseed[sLayer+iLayer].fMeanz);
+ cseed[sLayer+iLayer].fZref[1] = rieman.GetDZat(xcl[sLayer+iLayer]);
+ }
+ Double_t curv = rieman.GetC();
+ //
+ // likelihoods
+ //
+ Double_t sumda =
+ TMath::Abs(cseed[sLayer+0].fYfitR[1]- cseed[sLayer+0].fYref[1])+
+ TMath::Abs(cseed[sLayer+1].fYfitR[1]- cseed[sLayer+1].fYref[1])+
+ TMath::Abs(cseed[sLayer+2].fYfitR[1]- cseed[sLayer+2].fYref[1])+
+ TMath::Abs(cseed[sLayer+3].fYfitR[1]- cseed[sLayer+3].fYref[1]);
+ Double_t likea = TMath::Exp(-sumda*10.6);
+ Double_t likechi2 = 0.0000000001;
+ if (chi2R<0.5) likechi2+=TMath::Exp(-TMath::Sqrt(chi2R)*7.73);
+ Double_t likechi2z = TMath::Exp(-chi2Z*0.088)/TMath::Exp(-chi2Z*0.019);
+ Double_t likeN = TMath::Exp(-(72-nclusters)*0.19);
+ Double_t like = likea*likechi2*likechi2z*likeN;
+ //
+ Double_t likePrimY = TMath::Exp(-TMath::Abs(cseed[sLayer+0].fYref[1]-130*curv)*1.9);
+ Double_t likePrimZ = TMath::Exp(-TMath::Abs(cseed[sLayer+0].fZref[1]-
+ cseed[sLayer+0].fZref[0]/xcl[sLayer+0])*5.9);
+ Double_t likePrim = TMath::Max(likePrimY*likePrimZ,0.0005);
+
+ seedquality[registered] = like;
+ seedlayer[registered] = sLayer;
+ if (TMath::Log(0.000000000000001+like)<-15) continue;
+ AliTRDseed seedb[6];
+ for (Int_t iLayer=0;iLayer<6;iLayer++){
+ seedb[iLayer] = cseed[iLayer];
+ }
+ //
+ //<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ //<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ //<<<<<<<<<<<<<<< FULL TRACK FIT PART <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ //<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ //
+ Int_t nlayers = 0;
+ Int_t nusedf = 0;
+ Int_t findable = 0;
+ //
+ // add new layers - avoid long extrapolation
+ //
+ Int_t tLayer[2]={0,0};
+ if (sLayer==2) {tLayer[0]=1; tLayer[1]=0;}
+ if (sLayer==1) {tLayer[0]=5; tLayer[1]=0;}
+ if (sLayer==0) {tLayer[0]=4; tLayer[1]=5;}
+ //
+ for (Int_t iLayer=0;iLayer<2;iLayer++){
+ Int_t jLayer = tLayer[iLayer]; // set tracking layer
+ cseed[jLayer].Reset();
+ cseed[jLayer].fTilt = hL[jLayer];
+ cseed[jLayer].fPadLength = padlength[jLayer];
+ cseed[jLayer].fX0 = xcl[jLayer];
+ // get pad length and rough cluster
+ Int_t indexdummy = reflayers[jLayer]->FindNearestCluster(cseed[jLayer].fYref[0],
+ cseed[jLayer].fZref[0],kRoad2y,kRoad2z);
+ if (indexdummy<=0) continue;
+ AliTRDcluster *cldummy = (AliTRDcluster*)GetCluster(indexdummy);
+ padlength[jLayer] = TMath::Sqrt(cldummy->GetSigmaZ2()*12.);
+ }
+ AliTRDseed::FitRiemanTilt(cseed, kTRUE);
+ //
+ for (Int_t iLayer=0;iLayer<2;iLayer++){
+ Int_t jLayer = tLayer[iLayer]; // set tracking layer
+ if ( (jLayer==0) && !(cseed[1].isOK())) continue; // break not allowed
+ if ( (jLayer==5) && !(cseed[4].isOK())) continue; // break not allowed
+ Float_t zexp = cseed[jLayer].fZref[0];
+ Double_t zroad = padlength[jLayer]*0.5+1.;
+ //
+ //
+ for (Int_t iter=0;iter<2;iter++){
+ AliTRDseed tseed = cseed[jLayer];
+ Float_t quality = 10000;
+ for (Int_t iTime=2;iTime<20;iTime++){
+ AliTRDpropagationLayer& layer = *(fTrSec[ns]->GetLayer(layers[jLayer][1]-iTime));
+ Double_t dxlayer = layer.GetX()-xcl[jLayer];
+ Double_t yexp = tseed.fYref[0]+tseed.fYref[1]*dxlayer;
+ Float_t yroad = kRoad1y;
+ Int_t index = layer.FindNearestCluster(yexp,zexp, yroad, zroad);
+ if (index<=0) continue;
+ AliTRDcluster *cl = (AliTRDcluster*)GetCluster(index);
+ //
+ tseed.fIndexes[iTime] = index;
+ tseed.fClusters[iTime] = cl; // register cluster
+ tseed.fX[iTime] = dxlayer; // register cluster
+ tseed.fY[iTime] = cl->GetY(); // register cluster
+ tseed.fZ[iTime] = cl->GetZ(); // register cluster
+ }
+ tseed.Update();
+ if (tseed.isOK()){
+ Float_t dangle = tseed.fYfit[1]-tseed.fYref[1];
+ Float_t tquality = (18-tseed.fN2)/2. + TMath::Abs(dangle)/0.1+
+ TMath::Abs(tseed.fYfit[0]-tseed.fYref[0])/0.2+
+ 2.*TMath::Abs(tseed.fMeanz-tseed.fZref[0])/padlength[jLayer];
+ //
+ if (tquality<quality){
+ cseed[jLayer]=tseed;
+ quality = tquality;
+ }
+ }
+ zroad*=2.;
+ }
+ if ( cseed[jLayer].isOK()){
+ cseed[jLayer].CookLabels();
+ cseed[jLayer].UpdateUsed();
+ nusedf+= cseed[jLayer].fNUsed;
+ AliTRDseed::FitRiemanTilt(cseed, kTRUE);
+ }
+ }
+ //
+ //
+ // make copy
+ AliTRDseed bseed[6];
+ for (Int_t jLayer=0;jLayer<6;jLayer++){
+ bseed[jLayer] = cseed[jLayer];
+ }
+ Float_t lastquality = 10000;
+ Float_t lastchi2 = 10000;
+ Float_t chi2 = 1000;
- 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; ns<maxSec; ns++) {
-
- Int_t nl2 = *(fTrSec[(ns-2+maxSec)%maxSec]->GetLayer(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 (js<nl2) {
- if(turn != 2) continue;
- AliTRDpropagationLayer& r2=*(fTrSec[(ns-2+maxSec)%maxSec]->GetLayer(i2));
- cl=r2[js];
- y2=cl->GetY(); z2=cl->GetZ();
-
- x2= xx2*cs2+y2*sn2;
- y2=-xx2*sn2+y2*cs2;
- }
- else if (js<nl2+nl) {
- if(turn != 1) continue;
- AliTRDpropagationLayer& r2=*(fTrSec[(ns-1+maxSec)%maxSec]->GetLayer(i2));
- cl=r2[js-nl2];
- y2=cl->GetY(); z2=cl->GetZ();
-
- x2= xx2*cs+y2*sn;
- y2=-xx2*sn+y2*cs;
- }
- else if (js<nl2+nl+nm) {
- if(turn != 1) continue;
- AliTRDpropagationLayer& r2=*(fTrSec[ns]->GetLayer(i2));
- cl=r2[js-nl2-nl];
- x2=xx2; y2=cl->GetY(); z2=cl->GetZ();
- }
- else if (js<nl2+nl+nm+nu) {
- if(turn != 1) continue;
- AliTRDpropagationLayer& r2=*(fTrSec[(ns+1)%maxSec]->GetLayer(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;
+ //
+ for (Int_t iter =0; iter<4;iter++){
+ //
+ // sort tracklets according "quality", try to "improve" 4 worst
+ //
+ Float_t sumquality = 0;
+ Float_t squality[6];
+ Int_t sortindexes[6];
+ for (Int_t jLayer=0;jLayer<6;jLayer++){
+ if (bseed[jLayer].isOK()){
+ AliTRDseed &tseed = bseed[jLayer];
+ Double_t zcor = tseed.fTilt*(tseed.fZProb-tseed.fZref[0]);
+ Float_t dangle = tseed.fYfit[1]-tseed.fYref[1];
+ Float_t tquality = (18-tseed.fN2)/2. + TMath::Abs(dangle)/0.1+
+ TMath::Abs(tseed.fYfit[0]-(tseed.fYref[0]-zcor))/0.2+
+ 2.*TMath::Abs(tseed.fMeanz-tseed.fZref[0])/padlength[jLayer];
+ squality[jLayer] = tquality;
+ }
+ else squality[jLayer]=-1;
+ sumquality +=squality[jLayer];
+ }
+
+ if (sumquality>=lastquality || chi2>lastchi2) break;
+ lastquality = sumquality;
+ lastchi2 = chi2;
+ if (iter>0){
+ for (Int_t jLayer=0;jLayer<6;jLayer++){
+ cseed[jLayer] = bseed[jLayer];
+ }
+ }
+ TMath::Sort(6,squality,sortindexes,kFALSE);
+ //
+ //
+ for (Int_t jLayer=5;jLayer>1;jLayer--){
+ Int_t bLayer = sortindexes[jLayer];
+ AliTRDseed tseed = bseed[bLayer];
+ for (Int_t iTime=2;iTime<20;iTime++){
+ AliTRDpropagationLayer& layer = *(fTrSec[ns]->GetLayer(layers[bLayer][1]-iTime));
+ Double_t dxlayer= layer.GetX()-xcl[bLayer];
+ //
+ Double_t zexp = tseed.fZref[0];
+ Double_t zcor = tseed.fTilt*(tseed.fZProb-tseed.fZref[0]);
+ //
+ Float_t roadz = padlength[bLayer]+1;
+ if (TMath::Abs(tseed.fZProb-zexp)> padlength[bLayer]*0.5) {roadz = padlength[bLayer]*0.5;}
+ if (tseed.fZfit[1]*tseed.fZref[1]<0) {roadz = padlength[bLayer]*0.5;}
+ if (TMath::Abs(tseed.fZProb-zexp)<0.1*padlength[bLayer]) {
+ zexp = tseed.fZProb;
+ roadz = padlength[bLayer]*0.5;
+ }
+ //
+ Double_t yexp = tseed.fYref[0]+
+ tseed.fYref[1]*dxlayer-zcor;
+ Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y, roadz);
+ if (index<=0) continue;
+ AliTRDcluster *cl = (AliTRDcluster*)GetCluster(index);
+ //
+ tseed.fIndexes[iTime] = index;
+ tseed.fClusters[iTime] = cl; // register cluster
+ tseed.fX[iTime] = dxlayer; // register cluster
+ tseed.fY[iTime] = cl->GetY(); // register cluster
+ tseed.fZ[iTime] = cl->GetZ(); // register cluster
+ }
+ tseed.Update();
+ if (tseed.isOK()) {
+ Float_t dangle = tseed.fYfit[1]-tseed.fYref[1];
+ Double_t zcor = tseed.fTilt*(tseed.fZProb-tseed.fZref[0]);
+ //
+ Float_t tquality = (18-tseed.fN2)/2. + TMath::Abs(dangle)/0.1+
+ TMath::Abs(tseed.fYfit[0]-(tseed.fYref[0]-zcor))/0.2+
+ 2.*TMath::Abs(tseed.fMeanz-tseed.fZref[0])/padlength[jLayer];
+ //
+ if (tquality<squality[bLayer])
+ bseed[bLayer] = tseed;
+ }
+ }
+ chi2 = AliTRDseed::FitRiemanTilt(bseed, kTRUE);
+ }
+ //
+ //
+ //
+ nclusters = 0;
+ nlayers = 0;
+ findable = 0;
+ for (Int_t iLayer=0;iLayer<6;iLayer++) {
+ if (TMath::Abs(cseed[iLayer].fYref[0]/cseed[iLayer].fX0)<0.15)
+ findable++;
+ if (cseed[iLayer].isOK()){
+ nclusters+=cseed[iLayer].fN2;
+ nlayers++;
+ }
+ }
+ if (nlayers<3) continue;
+ rieman.Reset();
+ for (Int_t iLayer=0;iLayer<6;iLayer++){
+ if (cseed[iLayer].isOK()) rieman.AddPoint(xcl[iLayer],cseed[iLayer].fYfitR[0],
+ cseed[iLayer].fZProb,1,10);
+ }
+ rieman.Update();
+ //
+ chi2RF =0;
+ chi2ZF =0;
+ for (Int_t iLayer=0;iLayer<6;iLayer++){
+ if (cseed[iLayer].isOK()){
+ cseed[iLayer].fYref[0] = rieman.GetYat(xcl[iLayer]);
+ chi2RF += (cseed[iLayer].fYref[0]-cseed[iLayer].fYfitR[0])*
+ (cseed[iLayer].fYref[0]-cseed[iLayer].fYfitR[0]);
+ cseed[iLayer].fYref[1] = rieman.GetDYat(xcl[iLayer]);
+ cseed[iLayer].fZref[0] = rieman.GetZat(xcl[iLayer]);
+ chi2ZF += (cseed[iLayer].fZref[0]- cseed[iLayer].fMeanz)*
+ (cseed[iLayer].fZref[0]- cseed[iLayer].fMeanz);
+ cseed[iLayer].fZref[1] = rieman.GetDZat(xcl[iLayer]);
+ }
+ }
+ chi2RF/=TMath::Max((nlayers-3.),1.);
+ chi2ZF/=TMath::Max((nlayers-3.),1.);
+ curv = rieman.GetC();
+
+ //
+
+ Double_t xref2 = (xcl[2]+xcl[3])*0.5; // middle of the chamber
+ Double_t dzmf = rieman.GetDZat(xref2);
+ Double_t zmf = rieman.GetZat(xref2);
+ //
+ // fit hyperplane
+ //
+ Int_t npointsT =0;
+ fitterTC.ClearPoints();
+ fitterT2.ClearPoints();
+ rieman2.Reset();
+ for (Int_t iLayer=0; iLayer<6;iLayer++){
+ if (!cseed[iLayer].isOK()) continue;
+ for (Int_t itime=0;itime<25;itime++){
+ if (!cseed[iLayer].fUsable[itime]) continue;
+ Double_t x = cseed[iLayer].fX[itime]+cseed[iLayer].fX0-xref2; // x relative to the midle chamber
+ Double_t y = cseed[iLayer].fY[itime];
+ Double_t z = cseed[iLayer].fZ[itime];
+ // ExB correction to the correction
+ // tilted rieman
+ //
+ Double_t uvt[6];
+ Double_t x2 = cseed[iLayer].fX[itime]+cseed[iLayer].fX0; // global x
+ //
+ Double_t t = 1./(x2*x2+y*y);
+ uvt[1] = t; // t
+ uvt[0] = 2.*x2*uvt[1]; // u
+ //
+ uvt[2] = 2.0*hL[iLayer]*uvt[1];
+ uvt[3] = 2.0*hL[iLayer]*x*uvt[1];
+ uvt[4] = 2.0*(y+hL[iLayer]*z)*uvt[1];
+ //
+ Double_t error = 2*0.2*uvt[1];
+ fitterT2.AddPoint(uvt,uvt[4],error);
+ //
+ // constrained rieman
+ //
+ z =cseed[iLayer].fZ[itime];
+ uvt[0] = 2.*x2*t; // u
+ uvt[1] = 2*hL[iLayer]*x2*uvt[1];
+ uvt[2] = 2*(y+hL[iLayer]*(z-GetZ()))*t;
+ fitterTC.AddPoint(uvt,uvt[2],error);
+ //
+ rieman2.AddPoint(x2,y,z,1,10);
+ npointsT++;
+ }
+ }
+ rieman2.Update();
+ fitterTC.Eval();
+ fitterT2.Eval();
+ Double_t rpolz0 = fitterT2.GetParameter(3);
+ Double_t rpolz1 = fitterT2.GetParameter(4);
+ //
+ // linear fitter - not possible to make boundaries
+ // non accept non possible z and dzdx combination
+ //
+ Bool_t acceptablez =kTRUE;
+ for (Int_t iLayer=0; iLayer<6;iLayer++){
+ if (cseed[iLayer].isOK()){
+ Double_t zT2 = rpolz0+rpolz1*(xcl[iLayer] - xref2);
+ if (TMath::Abs(cseed[iLayer].fZProb-zT2)>padlength[iLayer]*0.5+1)
+ acceptablez = kFALSE;
+ }
+ }
+ if (!acceptablez){
+ fitterT2.FixParameter(3,zmf);
+ fitterT2.FixParameter(4,dzmf);
+ fitterT2.Eval();
+ fitterT2.ReleaseParameter(3);
+ fitterT2.ReleaseParameter(4);
+ rpolz0 = fitterT2.GetParameter(3);
+ rpolz1 = fitterT2.GetParameter(4);
+ }
+ //
+ Double_t chi2TR = fitterT2.GetChisquare()/Float_t(npointsT);
+ Double_t chi2TC = fitterTC.GetChisquare()/Float_t(npointsT);
+ //
+ Double_t polz1c = fitterTC.GetParameter(2);
+ Double_t polz0c = polz1c*xref2;
+ //
+ Double_t aC = fitterTC.GetParameter(0);
+ Double_t bC = fitterTC.GetParameter(1);
+ Double_t CC = aC/TMath::Sqrt(bC*bC+1.); // curvature
+ //
+ Double_t aR = fitterT2.GetParameter(0);
+ Double_t bR = fitterT2.GetParameter(1);
+ Double_t dR = fitterT2.GetParameter(2);
+ Double_t CR = 1+bR*bR-dR*aR;
+ Double_t dca = 0.;
+ if (CR>0){
+ dca = -dR/(TMath::Sqrt(1+bR*bR-dR*aR)+TMath::Sqrt(1+bR*bR));
+ CR = aR/TMath::Sqrt(CR);
+ }
+ //
+ Double_t chi2ZT2=0, chi2ZTC=0;
+ for (Int_t iLayer=0; iLayer<6;iLayer++){
+ if (cseed[iLayer].isOK()){
+ Double_t zT2 = rpolz0+rpolz1*(xcl[iLayer] - xref2);
+ Double_t zTC = polz0c+polz1c*(xcl[iLayer] - xref2);
+ chi2ZT2 += TMath::Abs(cseed[iLayer].fMeanz-zT2);
+ chi2ZTC += TMath::Abs(cseed[iLayer].fMeanz-zTC);
+ }
+ }
+ chi2ZT2/=TMath::Max((nlayers-3.),1.);
+ chi2ZTC/=TMath::Max((nlayers-3.),1.);
+ //
+ //
+ //
+ AliTRDseed::FitRiemanTilt(cseed, kTRUE);
+ Float_t sumdaf = 0;
+ for (Int_t iLayer=0;iLayer<6;iLayer++){
+ if (cseed[iLayer].isOK())
+ sumdaf += TMath::Abs((cseed[iLayer].fYfit[1]-cseed[iLayer].fYref[1])/cseed[iLayer].fSigmaY2);
+ }
+ sumdaf /= Float_t (nlayers-2.);
+ //
+ // likelihoods for full track
+ //
+ Double_t likezf = TMath::Exp(-chi2ZF*0.14);
+ Double_t likechi2C = TMath::Exp(-chi2TC*0.677);
+ Double_t likechi2TR = TMath::Exp(-chi2TR*0.78);
+ Double_t likeaf = TMath::Exp(-sumdaf*3.23);
+ seedquality2[registered] = likezf*likechi2TR*likeaf;
+// Bool_t isGold = kFALSE;
+//
+// if (nlayers == 6 && TMath::Log(0.000000001+seedquality2[index])<-5.) isGold =kTRUE; // gold
+// if (nlayers == findable && TMath::Log(0.000000001+seedquality2[index])<-4.) isGold =kTRUE; // gold
+// if (isGold &&nusedf<10){
+// for (Int_t jLayer=0;jLayer<6;jLayer++){
+// if ( seed[index][jLayer].isOK()&&TMath::Abs(seed[index][jLayer].fYfit[1]-seed[index][jLayer].fYfit[1])<0.1)
+// seed[index][jLayer].UseClusters(); //sign gold
+// }
+// }
+ //
+ //
+ //
+ Int_t index0=0;
+ if (!cseed[0].isOK()){
+ index0 = 1;
+ if (!cseed[1].isOK()) index0 = 2;
+ }
+ seedparams[registered][0] = cseed[index0].fX0;
+ seedparams[registered][1] = cseed[index0].fYref[0];
+ seedparams[registered][2] = cseed[index0].fZref[0];
+ seedparams[registered][5] = CR;
+ seedparams[registered][3] = cseed[index0].fX0*CR - TMath::Sin(TMath::ATan(cseed[0].fYref[1]));
+ seedparams[registered][4] = cseed[index0].fZref[1]/
+ TMath::Sqrt(1+cseed[index0].fYref[1]*cseed[index0].fYref[1]);
+ seedparams[registered][6] = ns;
+ //
+ //
+ Int_t labels[12], outlab[24];
+ Int_t nlab=0;
+ for (Int_t iLayer=0;iLayer<6;iLayer++){
+ if (!cseed[iLayer].isOK()) continue;
+ if (cseed[iLayer].fLabels[0]>=0) {
+ labels[nlab] = cseed[iLayer].fLabels[0];
+ nlab++;
+ }
+ if (cseed[iLayer].fLabels[1]>=0) {
+ labels[nlab] = cseed[iLayer].fLabels[1];
+ nlab++;
+ }
+ }
+ Freq(nlab,labels,outlab,kFALSE);
+ Int_t label = outlab[0];
+ Int_t frequency = outlab[1];
+ for (Int_t iLayer=0;iLayer<6;iLayer++){
+ cseed[iLayer].fFreq = frequency;
+ cseed[iLayer].fC = CR;
+ cseed[iLayer].fCC = CC;
+ cseed[iLayer].fChi2 = chi2TR;
+ cseed[iLayer].fChi2Z = chi2ZF;
+ }
+ //
+ if (1||(!isFake)){ //debugging print
+ Float_t zvertex = GetZ();
+ TTreeSRedirector& cstream = *fDebugStreamer;
+ cstream<<"Seeds1"<<
+ "isFake="<<isFake<<
+ "Vertex="<<zvertex<<
+ "Rieman2.="<<&rieman2<<
+ "Rieman.="<<&rieman<<
+ "Xref="<<xref<<
+ "X0="<<xcl[0]<<
+ "X1="<<xcl[1]<<
+ "X2="<<xcl[2]<<
+ "X3="<<xcl[3]<<
+ "X4="<<xcl[4]<<
+ "X5="<<xcl[5]<<
+ "Chi2R="<<chi2R<<
+ "Chi2Z="<<chi2Z<<
+ "Chi2RF="<<chi2RF<< //chi2 of trackletes on full track
+ "Chi2ZF="<<chi2ZF<< //chi2 z on tracklets on full track
+ "Chi2ZT2="<<chi2ZT2<< //chi2 z on tracklets on full track - rieman tilt
+ "Chi2ZTC="<<chi2ZTC<< //chi2 z on tracklets on full track - rieman tilt const
+ //
+ "Chi2TR="<<chi2TR<< //chi2 without vertex constrain
+ "Chi2TC="<<chi2TC<< //chi2 with vertex constrain
+ "C="<<curv<< // non constrained - no tilt correction
+ "DR="<<dR<< // DR parameter - tilt correction
+ "DCA="<<dca<< // DCA - tilt correction
+ "CR="<<CR<< // non constrained curvature - tilt correction
+ "CC="<<CC<< // constrained curvature
+ "Polz0="<<polz0c<<
+ "Polz1="<<polz1c<<
+ "RPolz0="<<rpolz0<<
+ "RPolz1="<<rpolz1<<
+ "Ncl="<<nclusters<<
+ "Nlayers="<<nlayers<<
+ "NUsedS="<<nusedCl<<
+ "NUsed="<<nusedf<<
+ "Findable="<<findable<<
+ "Like="<<like<<
+ "LikePrim="<<likePrim<<
+ "Likechi2C="<<likechi2C<<
+ "Likechi2TR="<<likechi2TR<<
+ "Likezf="<<likezf<<
+ "LikeF="<<seedquality2[registered]<<
+ "S0.="<<&cseed[0]<<
+ "S1.="<<&cseed[1]<<
+ "S2.="<<&cseed[2]<<
+ "S3.="<<&cseed[3]<<
+ "S4.="<<&cseed[4]<<
+ "S5.="<<&cseed[5]<<
+ "SB0.="<<&seedb[0]<<
+ "SB1.="<<&seedb[1]<<
+ "SB2.="<<&seedb[2]<<
+ "SB3.="<<&seedb[3]<<
+ "SB4.="<<&seedb[4]<<
+ "SB5.="<<&seedb[5]<<
+ "Label="<<label<<
+ "Freq="<<frequency<<
+ "sLayer="<<sLayer<<
+ "\n";
+ }
+ if (registered<maxseed-1) {
+ registered++;
+ cseed = seed[registered];
+ }
+ }// end of loop over layer 1
+ } // end of loop over layer 0
+ } // end of loop over layer 3
+ } // end of loop over seeding time bins
+ //
+ // choos best
+ //
+ TMath::Sort(registered,seedquality2,sort,kTRUE);
+ Bool_t signedseed[maxseed];
+ for (Int_t i=0;i<registered;i++){
+ signedseed[i]= kFALSE;
+ }
+ for (Int_t iter=0; iter<5; iter++){
+ for (Int_t iseed=0;iseed<registered;iseed++){
+ Int_t index = sort[iseed];
+ if (signedseed[index]) continue;
+ Int_t labelsall[1000];
+ Int_t nlabelsall=0;
+ Int_t naccepted=0;;
+ Int_t sLayer = seedlayer[index];
+ Int_t ncl = 0;
+ Int_t nused = 0;
+ Int_t nlayers =0;
+ Int_t findable = 0;
+ for (Int_t jLayer=0;jLayer<6;jLayer++){
+ if (TMath::Abs(seed[index][jLayer].fYref[0]/xcl[jLayer])<0.15)
+ findable++;
+ if (seed[index][jLayer].isOK()){
+ seed[index][jLayer].UpdateUsed();
+ ncl +=seed[index][jLayer].fN2;
+ nused +=seed[index][jLayer].fNUsed;
+ nlayers++;
+ //cooking label
+ for (Int_t itime=0;itime<25;itime++){
+ if (seed[index][jLayer].fUsable[itime]){
+ naccepted++;
+ for (Int_t ilab=0;ilab<3;ilab++){
+ Int_t tindex = seed[index][jLayer].fClusters[itime]->GetLabel(ilab);
+ if (tindex>=0){
+ labelsall[nlabelsall] = tindex;
+ nlabelsall++;
+ }
+ }
+ }
+ }
+ }
+ }
+ //
+ if (nused>30) continue;
+ //
+ if (iter==0){
+ if (nlayers<6) continue;
+ if (TMath::Log(0.000000001+seedquality2[index])<-5.) continue; // gold
+ }
+ //
+ if (iter==1){
+ if (nlayers<findable) continue;
+ if (TMath::Log(0.000000001+seedquality2[index])<-4.) continue; //
+ }
+ //
+ //
+ if (iter==2){
+ if (nlayers==findable || nlayers==6) continue;
+ if (TMath::Log(0.000000001+seedquality2[index])<-6.) continue;
+ }
+ //
+ if (iter==3){
+ if (TMath::Log(0.000000001+seedquality2[index])<-5.) continue;
+ }
+ //
+ if (iter==4){
+ if (TMath::Log(0.000000001+seedquality2[index])-nused/(nlayers-3.)<-15.) continue;
+ }
+ //
+ signedseed[index] = kTRUE;
+ //
+ Int_t labels[1000], outlab[1000];
+ Int_t nlab=0;
+ for (Int_t iLayer=0;iLayer<6;iLayer++){
+ if (seed[index][iLayer].isOK()){
+ if (seed[index][iLayer].fLabels[0]>=0) {
+ labels[nlab] = seed[index][iLayer].fLabels[0];
+ nlab++;
+ }
+ if (seed[index][iLayer].fLabels[1]>=0) {
+ labels[nlab] = seed[index][iLayer].fLabels[1];
+ nlab++;
+ }
+ }
+ }
+ Freq(nlab,labels,outlab,kFALSE);
+ Int_t label = outlab[0];
+ Int_t frequency = outlab[1];
+ Freq(nlabelsall,labelsall,outlab,kFALSE);
+ Int_t label1 = outlab[0];
+ Int_t label2 = outlab[2];
+ Float_t fakeratio = (naccepted-outlab[1])/Float_t(naccepted);
+ Float_t ratio = Float_t(nused)/Float_t(ncl);
+ if (ratio<0.25){
+ for (Int_t jLayer=0;jLayer<6;jLayer++){
+ if ( seed[index][jLayer].isOK()&&TMath::Abs(seed[index][jLayer].fYfit[1]-seed[index][jLayer].fYfit[1])<0.2 )
+ seed[index][jLayer].UseClusters(); //sign gold
+ }
+ }
+ //
+ Int_t eventNr = esd->GetEventNumber();
+ TTreeSRedirector& cstream = *fDebugStreamer;
+ //
+ // register seed
+ //
+ AliTRDtrack * track = RegisterSeed(seed[index],seedparams[index]);
+ AliTRDtrack dummy;
+ if (!track) track=&dummy;
+ else{
+ AliESDtrack esdtrack;
+ esdtrack.UpdateTrackParams(track, AliESDtrack::kTRDout);
+ esdtrack.SetLabel(label);
+ esd->AddTrack(&esdtrack);
+ TTreeSRedirector& cstream = *fDebugStreamer;
+ cstream<<"Tracks"<<
+ "EventNr="<<eventNr<<
+ "ESD.="<<&esdtrack<<
+ "trd.="<<track<<
+ "trdback.="<<track<<
+ "\n";
}
- 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 "<<fNseeds;
- }
+ cstream<<"Seeds2"<<
+ "Iter="<<iter<<
+ "Track.="<<track<<
+ "Like="<<seedquality[index]<<
+ "LikeF="<<seedquality2[index]<<
+ "S0.="<<&seed[index][0]<<
+ "S1.="<<&seed[index][1]<<
+ "S2.="<<&seed[index][2]<<
+ "S3.="<<&seed[index][3]<<
+ "S4.="<<&seed[index][4]<<
+ "S5.="<<&seed[index][5]<<
+ "Label="<<label<<
+ "Label1="<<label1<<
+ "Label2="<<label2<<
+ "FakeRatio="<<fakeratio<<
+ "Freq="<<frequency<<
+ "Ncl="<<ncl<<
+ "Nlayers="<<nlayers<<
+ "Findable="<<findable<<
+ "NUsed="<<nused<<
+ "sLayer="<<sLayer<<
+ "EventNr="<<eventNr<<
+ "\n";
}
}
- }
-}
-
+ } // end of loop over sectors
+ delete [] pseed;
+}
+
//_____________________________________________________________________________
Int_t AliTRDtracker::ReadClusters(TObjArray *array, TTree *ClusterTree) const
{
// Loop through all TRD digits
for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) {
c = (AliTRDcluster*)clusterArray->UncheckedAt(iCluster);
- if (c->GetNPads()>3&&(iCluster%3>0)) {
- delete clusterArray->RemoveAt(iCluster);
- continue;
- }
- // AliTRDcluster *co = new AliTRDcluster(*c); //remove unnecesary coping - + clusters are together in memory
AliTRDcluster *co = 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);
clusterArray->RemoveAt(iCluster);
}
}
- cout<<"Allocated"<<nsize<<"\tLoaded"<<array->GetEntriesFast()<<"\n";
+
// cout<<"Allocated"<<nsize<<"\tLoaded"<<array->GetEntriesFast()<<"\n";
delete clusterArray;
return 0;
}
+//__________________________________________________________________
+Bool_t AliTRDtracker::GetTrackPoint(Int_t index, AliTrackPoint& p) const
+{
+ //
+ // Get track space point with index i
+ // Origin: C.Cheshkov
+ //
+
+ AliTRDcluster *cl = (AliTRDcluster*)fClusters->UncheckedAt(index);
+ Int_t idet = cl->GetDetector();
+ Int_t isector = fGeom->GetSector(idet);
+ Int_t ichamber= fGeom->GetChamber(idet);
+ Int_t iplan = fGeom->GetPlane(idet);
+ Double_t local[3];
+ local[0]=GetX(isector,iplan,cl->GetLocalTimeBin());
+ local[1]=cl->GetY();
+ local[2]=cl->GetZ();
+ Double_t global[3];
+ fGeom->RotateBack(idet,local,global);
+ p.SetXYZ(global[0],global[1],global[2]);
+ AliAlignObj::ELayerID iLayer = AliAlignObj::kTRD1;
+ switch (iplan) {
+ case 0:
+ iLayer = AliAlignObj::kTRD1;
+ break;
+ case 1:
+ iLayer = AliAlignObj::kTRD2;
+ break;
+ case 2:
+ iLayer = AliAlignObj::kTRD3;
+ break;
+ case 3:
+ iLayer = AliAlignObj::kTRD4;
+ break;
+ case 4:
+ iLayer = AliAlignObj::kTRD5;
+ break;
+ case 5:
+ iLayer = AliAlignObj::kTRD6;
+ break;
+ };
+ Int_t modId = isector*fGeom->Ncham()+ichamber;
+ UShort_t volid = AliAlignObj::LayerToVolUID(iLayer,modId);
+ p.SetVolumeID(volid);
+
+ return kTRUE;
+
+}
+
//__________________________________________________________________
void AliTRDtracker::CookLabel(AliKalmanTrack* pt, Float_t wrong) const
{
//
// Use clusters, but don't abuse them!
//
-
+ const Float_t kmaxchi2 =18;
+ const Float_t kmincl =10;
+ AliTRDtrack * track = (AliTRDtrack*)t;
+ //
Int_t ncl=t->GetNumberOfClusters();
for (Int_t i=from; i<ncl; i++) {
Int_t index = t->GetClusterIndex(i);
AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index);
- c->Use();
+ //
+ Int_t iplane = fGeom->GetPlane(c->GetDetector());
+ if (track->fTracklets[iplane].GetChi2()>kmaxchi2) continue;
+ if (track->fTracklets[iplane].GetN()<kmincl) continue;
+ if (!(c->IsUsed())) c->Use();
}
}
//_______________________________________________________
AliTRDtracker::AliTRDpropagationLayer::AliTRDpropagationLayer(Double_t x,
- Double_t dx, Double_t rho, Double_t radLength, Int_t tbIndex)
+ Double_t dx, Double_t rho, Double_t radLength, Int_t tbIndex, Int_t plane)
{
//
// AliTRDpropagationLayer constructor
fN = 0; fX = x; fdX = dx; fRho = rho; fX0 = radLength;
fClusters = NULL; fIndex = NULL; fTimeBinIndex = tbIndex;
-
+ fPlane = plane;
for(Int_t i=0; i < (Int_t) kZones; i++) {
fZc[i]=0; fZmax[i] = 0;
//_______________________________________________________
-AliTRDtracker::AliTRDtrackingSector::AliTRDtrackingSector(AliTRDgeometry* geo, Int_t gs, AliTRDparameter* par)
+AliTRDtracker::AliTRDtrackingSector::AliTRDtrackingSector(AliTRDgeometry* geo, Int_t gs)
{
//
// AliTRDtrackingSector Constructor
//
-
AliTRDpadPlane *padPlane = 0;
fGeom = geo;
- fPar = par;
fGeomSector = gs;
- fTzeroShift = 0.13;
fN = 0;
//
// get holes description from geometry
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; i<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- InsertLayer(ppl);
- }
-
- // set time bins in the outer field cage vessel
-
- 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);
-
- dx = 0.02; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg
- ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1);
- InsertLayer(ppl);
-
- dx = 2.; xin = xout; xout = xin + dx; rho = 1.45*0.02; radLength = 41.28; // Nomex
- steps = 5; dx = (xout - xin)/steps;
- for(Int_t i=0; i<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- InsertLayer(ppl);
- }
-
- dx = 0.02; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg
- ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1);
- InsertLayer(ppl);
-
- 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);
-
-
- // set time bins in CO2
-
- xin = xout; xout = 275.0;
- steps = 50; dx = (xout - xin)/steps;
- rho = 1.977e-3; radLength = 36.2;
-
- for(Int_t i=0; i<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- InsertLayer(ppl);
- }
-
- // set time bins in the outer containment vessel
-
- dx = 50e-4; xin = xout; xout = xin + dx; rho = 2.7; radLength = 24.01; // Al
- ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1);
- InsertLayer(ppl);
-
- 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);
-
- dx = 0.06; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg
- ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1);
- InsertLayer(ppl);
-
- dx = 3.; xin = xout; xout = xin + dx; rho = 1.45*0.02; radLength = 41.28; // Nomex
- steps = 10; dx = (xout - xin)/steps;
- for(Int_t i=0; i<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- InsertLayer(ppl);
- }
-
- dx = 0.06; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg
- ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1);
- InsertLayer(ppl);
-
- 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);
-
- dx = 50e-4; xin = xout; xout = xin + dx; rho = 2.7; radLength = 24.01; // Al
- ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1);
- InsertLayer(ppl);
-
- Double_t xtrd = (Double_t) fGeom->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; i<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- InsertLayer(ppl);
- }
-
-
- // Double_t alpha=AliTRDgeometry::GetAlpha();
+ Double_t x, dx, rho, radLength;
+ // Int_t steps;
// add layers for each of the planes
-
- Double_t dxRo = (Double_t) fGeom->CroHght(); // 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;
+ //Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region
- Int_t tb, tbIndex;
+ Int_t 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
+ AliTRDCommonParam* commonParam = AliTRDCommonParam::Instance();
+ if (!commonParam)
+ {
+ printf("<AliTRDtracker::AliTRDtrackingSector::AliTRDtrackingSector> ");
+ printf("Could not get common params\n");
+ return;
+ }
+
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; i<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- InsertLayer(ppl);
- }
ymax = fGeom->GetChamberWidth(plane)/2.;
- //
// Modidified for new pad plane class, 22.04.05 (C.B.)
- // ymaxsensitive = (fPar->GetColPadSize(plane)*fPar->GetColMax(plane)-4)/2.;
- padPlane = fPar->GetPadPlane(plane,0);
- ymaxsensitive = (padPlane->GetColSize(1)*padPlane->GetNcols()-4)/2.;
-
+ padPlane = commonParam->GetPadPlane(plane,0);
+ ymaxsensitive = (padPlane->GetColSize(1)*padPlane->GetNcols()-4)/2.;
for(Int_t ch = 0; ch < kNchambers; ch++) {
zmax[ch] = fGeom->GetChamberLength(plane,ch)/2;
//
// Modidified for new pad plane class, 22.04.05 (C.B.)
- //Float_t pad = fPar->GetRowPadSize(plane,ch,0);
Float_t pad = padPlane->GetRowSize(1);
- Float_t row0 = fPar->GetRow0(plane,ch,0);
- Int_t nPads = fPar->GetRowMax(plane,ch,0);
+ Float_t row0 = commonParam->GetRow0(plane,ch,0);
+ Int_t nPads = commonParam->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();
-
+ zc[ch] = -(pad * nPads)/2 + row0;
}
- dx = fPar->GetDriftVelocity()
- / fPar->GetSamplingFrequency();
+ dx = AliTRDcalibDB::Instance()->GetVdrift(0,0,0)
+ / AliTRDcalibDB::Instance()->GetSamplingFrequency();
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;
+ Double_t x0 = (Double_t) AliTRDgeometry::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->GetDriftVelocity()
- / fPar->GetSamplingFrequency();
- 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);
+ Int_t nTimeBins = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
+ for (Int_t iTime = 0; iTime<nTimeBins; iTime++){
+ Double_t xlayer = iTime*dx - dxAmp;
+ //if (xlayer<0) xlayer=dxAmp/2.;
+ x = x0 - xlayer;
+ //
+ tbIndex = CookTimeBinIndex(plane, iTime);
+ ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex, plane);
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; i<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- ppl->SetYmax(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<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- InsertLayer(ppl);
+ InsertLayer(ppl);
}
}
- // Space between the TRD and RICH
- Double_t xRICH = 500.;
- xin = xout; xout = xRICH;
- steps = 200; dx = (xout - xin)/steps; rho = 1.29e-3; radLength = 36.66;
- for(Int_t i=0; i<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- InsertLayer(ppl);
- }
-
MapTimeBinLayers();
delete [] zc;
delete [] zmax;
// depending on the digitization parameters calculates "global"
// time bin index for timebin <localTB> in plane <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->GetDriftVelocity()
- / fPar->GetSamplingFrequency();
-
- 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;
-
+ //
+ Int_t tbPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
+ Int_t gtb = (plane+1) * tbPerPlane - localTB -1;
+ if (localTB<0) return -1;
+ if (gtb<0) return -1;
return gtb;
-
-
}
//______________________________________________________
}
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);
- }
- }
}
return m;
}
+
+
+
+
//______________________________________________________
void AliTRDtracker::AliTRDpropagationLayer::SetZ(Double_t* center, Double_t *w, Double_t *wsensitive )
{
-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 <dx>, density <rho>, rad. length <radLength>,
- // and sensitivity <lookForCluster> in point <y,z>
- //
-
- Double_t alpha = AliTRDgeometry::GetAlpha();
- Double_t ymax = fX*TMath::Tan(0.5*alpha);
-
-
- dx = fdX;
- rho = fRho;
- radLength = fX0;
- lookForCluster = kFALSE;
- Bool_t cross =kFALSE;
- //
- //
- if ( (ymax-TMath::Abs(y))<3.){ //cross material
- rho*=40.;
- radLength*=40.;
- cross=kTRUE;
- }
- //
- // check dead regions in sensitive volume
- //
- Int_t zone=-1;
- for(Int_t ch = 0; ch < (Int_t) kZones; ch++) {
- if (TMath::Abs(z - fZc[ch]) > fZmax[ch]) continue; //not in given zone
- //
- if (TMath::Abs(z - fZc[ch]) < fZmaxSensitive[ch]){
- if (fTimeBinIndex>=0) lookForCluster = !(fIsHole[zone]);
- if(TMath::Abs(y) > fYmaxSensitive){
- lookForCluster = kFALSE;
- }
- if (fIsHole[zone]) {
- //if hole
- rho = 1.29e-3;
- radLength = 36.66;
- }
- }else{
- rho = 2.7; radLength = 24.01; //aluminium in between
- }
- }
- //
- if (fTimeBinIndex>=0) 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;
-}
//______________________________________________________
//______________________________________________________
-Int_t AliTRDtracker::AliTRDpropagationLayer::Find(Double_t y) const {
+Int_t AliTRDtracker::AliTRDpropagationLayer::Find(Float_t y) const {
// Returns index of the cluster nearest in Y
+ if (fN<=0) return 0;
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;
return m;
}
+Int_t AliTRDtracker::AliTRDpropagationLayer::FindNearestCluster(Float_t y, Float_t z, Float_t maxroad, Float_t maxroadz) const
+{
+ //
+ // Returns index of the cluster nearest to the given y,z
+ //
+ Int_t index = -1;
+ Int_t maxn = fN;
+ Float_t mindist = maxroad;
+ //
+ for (Int_t i=Find(y-maxroad); i<maxn; i++) {
+ AliTRDcluster* c=(AliTRDcluster*)(fClusters[i]);
+ Float_t ycl = c->GetY();
+ //
+ if (ycl > y+maxroad) break;
+ if (TMath::Abs(c->GetZ()-z) > maxroadz) continue;
+ if (TMath::Abs(ycl-y)<mindist){
+ mindist = TMath::Abs(ycl-y);
+ index = fIndex[i];
+ }
+ }
+ return index;
+}
+
+
//---------------------------------------------------------
Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster* c) {
//
// Returns correction factor for tilted pads geometry
//
-
- AliTRDpadPlane *padPlane = fPar->GetPadPlane(0,0);
- Double_t h01 = sin(TMath::Pi() / 180.0 * padPlane->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;
+ AliTRDpadPlane *padPlane = AliTRDCommonParam::Instance()->GetPadPlane(plane,0);
+ Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle());
if(fNoTilt) h01 = 0;
-
return h01;
}
// 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];
} // end of function
-Int_t AliTRDtracker::FindClusters(Int_t sector, Int_t t0, Int_t t1, AliTRDtrack * track, Int_t *clusters)
+Int_t AliTRDtracker::FindClusters(Int_t sector, Int_t t0, Int_t t1, AliTRDtrack * track, Int_t *clusters,AliTRDtracklet&tracklet)
{
//
//
// try to find nearest clusters to the track in timebins from t0 to t1
//
//
- Double_t x[1000],yt[1000],zt[10000];
- Double_t dz[1000],dy[10000];
- Int_t indexes[2][10000];
- AliTRDcluster *cl[2][10000];
-
- for (Int_t it=t0;it<t1; it++){
- clusters[it]=-2;
- indexes[0][it]=-2; //reset indexes1
- indexes[1][it]=-2; //reset indexes1
+ //
+ // correction coeficients - depends on TRD parameters - to be changed according it
+ //
+
+ Double_t x[100],yt[100],zt[100];
+ Double_t xmean=0; //reference x
+ Double_t dz[10][100],dy[10][100];
+ Float_t zmean[100], nmean[100];
+ Int_t clfound=0;
+ Int_t indexes[10][100]; // indexes of the clusters in the road
+ AliTRDcluster *cl[10][100]; // pointers to the clusters in the road
+ Int_t best[10][100]; // index of best matching cluster
+ //
+ //
+
+ for (Int_t it=0;it<=t1-t0; it++){
x[it]=0;
yt[it]=0;
zt[it]=0;
- dz[it]=0;
- dy[it]=0;
- cl[0][it]=0;
- cl[1][it]=0;
+ clusters[it+t0]=-2;
+ zmean[it]=0;
+ nmean[it]=0;
+ //
+ for (Int_t ih=0;ih<10;ih++){
+ indexes[ih][it]=-2; //reset indexes1
+ cl[ih][it]=0;
+ dz[ih][it]=-100;
+ dy[ih][it]=-100;
+ best[ih][it]=0;
+ }
}
//
Double_t x0 = track->GetX();
- Double_t sy2=ExpectedSigmaY2(x0,track->GetTgl(),track->GetPt());
- Double_t sz2=ExpectedSigmaZ2(x0,track->GetTgl());
- Double_t road = 10.*sqrt(track->GetSigmaY2() + sy2);
+ Double_t sigmaz = TMath::Sqrt(TMath::Abs(track->GetSigmaZ2()));
Int_t nall=0;
Int_t nfound=0;
+ Double_t h01 =0;
+ Int_t plane =-1;
+ Float_t padlength=0;
+ AliTRDtrack track2(*track);
+ Float_t snpy = track->GetSnp();
+ Float_t tany = TMath::Sqrt(snpy*snpy/(1.-snpy*snpy));
+ if (snpy<0) tany*=-1;
+ //
+ Double_t sy2=ExpectedSigmaY2(x0,track->GetTgl(),track->GetPt());
+ Double_t sz2=ExpectedSigmaZ2(x0,track->GetTgl());
+ Double_t road = 15.*sqrt(track->GetSigmaY2() + sy2);
+ if (road>6.) road=6.;
- for (Int_t it=t0;it<t1;it++){
- Double_t maxChi2=fgkMaxChi2;
- AliTRDpropagationLayer& timeBin=*(fTrSec[sector]->GetLayer(it));
+ //
+ for (Int_t it=0;it<t1-t0;it++){
+ Double_t maxChi2[2]={fgkMaxChi2,fgkMaxChi2};
+ AliTRDpropagationLayer& timeBin=*(fTrSec[sector]->GetLayer(it+t0));
if (timeBin==0) continue; // no indexes1
Int_t maxn = timeBin;
x[it] = timeBin.GetX();
- Double_t y,z;
- if (!track->GetProlongation(x[it],y,z)) continue;
- yt[it]=y;
- zt[it]=z;
+ track2.PropagateTo(x[it]);
+ yt[it] = track2.GetY();
+ zt[it] = track2.GetZ();
+
+ Double_t y=yt[it],z=zt[it];
Double_t chi2 =1000000;
nall++;
//
- // find nearest cluster at given pad
+ // find 2 nearest cluster at given time bin
+ //
+ //
for (Int_t i=timeBin.Find(y-road); i<maxn; i++) {
AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]);
- Double_t h01 = GetTiltFactor(c);
- if (c->GetY() > y+road) break;
- if (c->IsUsed() > 0) continue;
- if((c->GetZ()-z)*(c->GetZ()-z) > 3 * sz2) continue;
- chi2=track->GetPredictedChi2(c,h01);
- if (chi2 > maxChi2) continue;
- maxChi2=chi2;
- cl[0][it]=c;
- indexes[0][it] =timeBin.GetIndex(i);
- }
- //
- // find nearest cluster also in adjacent 2 pads
- //
- for (Int_t i=timeBin.Find(y-road); i<maxn; i++) {
- AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]);
- Double_t h01 = GetTiltFactor(c);
+ h01 = GetTiltFactor(c);
+ if (plane<0){
+ Int_t det = c->GetDetector();
+ plane = fGeom->GetPlane(det);
+ padlength = TMath::Sqrt(c->GetSigmaZ2()*12.);
+ }
+ // if (c->GetLocalTimeBin()==0) continue;
if (c->GetY() > y+road) break;
- if (c->IsUsed() > 0) continue;
- if((c->GetZ()-z)*(c->GetZ()-z) > 12 * sz2) continue;
- chi2=track->GetPredictedChi2(c,h01);
- if (chi2 > maxChi2) continue;
- maxChi2=chi2;
- cl[1][it]=c;
- indexes[1][it]=timeBin.GetIndex(i);
- if (!cl[0][it]) {
- cl[0][it]=c;
- indexes[0][it]=timeBin.GetIndex(i);
+ if((c->GetZ()-z)*(c->GetZ()-z) > 12. * sz2) continue;
+
+ Double_t dist = TMath::Abs(c->GetZ()-z);
+ if (dist> (0.5*padlength+6.*sigmaz)) continue; // 6 sigma boundary cut
+ Double_t cost = 0;
+ //
+ if (dist> (0.5*padlength-sigmaz)){ // sigma boundary cost function
+ cost = (dist-0.5*padlength)/(2.*sigmaz);
+ if (cost>-1) cost= (cost+1.)*(cost+1.);
+ else cost=0;
+ }
+ // Int_t label = TMath::Abs(track->GetLabel());
+ // if (c->GetLabel(0)!=label && c->GetLabel(1)!=label&&c->GetLabel(2)!=label) continue;
+ chi2=track2.GetPredictedChi2(c,h01)+cost;
+ //
+ clfound++;
+ if (chi2 > maxChi2[1]) continue;
+
+ for (Int_t ih=2;ih<9; ih++){ //store the clusters in the road
+ if (cl[ih][it]==0){
+ cl[ih][it] = c;
+ indexes[ih][it] =timeBin.GetIndex(i); // index - 9 - reserved for outliers
+ break;
+ }
+ }
+ //
+ if (chi2 <maxChi2[0]){
+ maxChi2[1] = maxChi2[0];
+ maxChi2[0] = chi2;
+ indexes[1][it] = indexes[0][it];
+ cl[1][it] = cl[0][it];
+ indexes[0][it] = timeBin.GetIndex(i);
+ cl[0][it] = c;
+ continue;
}
- }
- if (cl[0][it]||cl[1][it]) nfound++;
+ maxChi2[1]=chi2;
+ cl[1][it] = c;
+ indexes[1][it] =timeBin.GetIndex(i);
+ }
+ if (cl[0][it]){
+ nfound++;
+ xmean += x[it];
+ }
}
//
- if (nfound<5) return 0;
+ if (nfound<4) return 0;
+ xmean /=Float_t(nfound); // middle x
+ track2.PropagateTo(xmean); // propagate track to the center
//
// choose one of the variants
//
- Int_t changes[2]={0,0};
- Float_t sigmay[2]={1000,1000};
- Float_t meany[2] ={1000,1000};
- Float_t meanz[2] ={1000,1000};
- Int_t sumall[2] ={0,0};
- Int_t ngood[2] ={0,0};
- Int_t nbad[2] ={0,0};
+ Int_t changes[10];
+ Float_t sumz = 0;
+ Float_t sum = 0;
+ Double_t sumdy = 0;
+ Double_t sumdy2 = 0;
+ Double_t sumx = 0;
+ Double_t sumxy = 0;
+ Double_t sumx2 = 0;
+ Double_t mpads = 0;
+ //
+ Int_t ngood[10];
+ Int_t nbad[10];
+ //
+ Double_t meanz[10];
+ Double_t moffset[10]; // mean offset
+ Double_t mean[10]; // mean value
+ Double_t angle[10]; // angle
+ //
+ Double_t smoffset[10]; // sigma of mean offset
+ Double_t smean[10]; // sigma of mean value
+ Double_t sangle[10]; // sigma of angle
+ Double_t smeanangle[10]; // correlation
+ //
+ Double_t sigmas[10];
+ Double_t tchi2s[10]; // chi2s for tracklet
+ //
+ // calculate zmean
+ //
+ for (Int_t it=0;it<t1-t0;it++){
+ if (!cl[0][it]) continue;
+ for (Int_t dt=-3;dt<=3;dt++){
+ if (it+dt<0) continue;
+ if (it+dt>t1-t0) continue;
+ if (!cl[0][it+dt]) continue;
+ zmean[it]+=cl[0][it+dt]->GetZ();
+ nmean[it]+=1.;
+ }
+ zmean[it]/=nmean[it];
+ }
//
+ for (Int_t it=0; it<t1-t0;it++){
+ best[0][it]=0;
+ for (Int_t ih=0;ih<10;ih++){
+ dz[ih][it]=-100;
+ dy[ih][it]=-100;
+ if (!cl[ih][it]) continue;
+ Double_t xcluster = cl[ih][it]->GetX();
+ Double_t ytrack,ztrack;
+ track2.GetProlongation(xcluster, ytrack, ztrack );
+ dz[ih][it] = cl[ih][it]->GetZ()- ztrack; // calculate distance from track in z
+ dy[ih][it] = cl[ih][it]->GetY()+ dz[ih][it]*h01 -ytrack; // in y
+ }
+ // minimize changes
+ if (!cl[0][it]) continue;
+ if (TMath::Abs(cl[0][it]->GetZ()-zmean[it])> padlength*0.8 &&cl[1][it])
+ if (TMath::Abs(cl[1][it]->GetZ()-zmean[it])< padlength*0.5){
+ best[0][it]=1;
+ }
+ }
+ //
+ // iterative choosing of "best path"
//
- for (Int_t ih=0; ih<2;ih++){
- Float_t lastz =-10000;
- Float_t sumz =0;
- Float_t sum =0;
- Double_t sumdy = 0;
- Double_t sumdy2= 0;
+ //
+ Int_t label = TMath::Abs(track->GetLabel());
+ Int_t bestiter=0;
+ //
+ for (Int_t iter=0;iter<9;iter++){
//
- // how many changes ++ mean z ++mean y ++ sigma y
- for (Int_t it=t0;it<t1;it++){
- if (!cl[ih][it]) continue;
- sumall[ih]++;
- if (lastz<-9999) lastz = cl[ih][it]->GetZ();
- if (TMath::Abs(lastz-cl[ih][it]->GetZ())>1) {
- lastz = cl[ih][it]->GetZ();
- changes[ih]++;
+ changes[iter]= 0;
+ sumz = 0; sum=0; sumdy=0;sumdy2=0;sumx=0;sumx2=0;sumxy=0;mpads=0; ngood[iter]=0; nbad[iter]=0;
+ // linear fit
+ for (Int_t it=0;it<t1-t0;it++){
+ if (!cl[best[iter][it]][it]) continue;
+ //calculates pad-row changes
+ Double_t zbefore= cl[best[iter][it]][it]->GetZ();
+ Double_t zafter = cl[best[iter][it]][it]->GetZ();
+ for (Int_t itd = it-1; itd>=0;itd--) {
+ if (cl[best[iter][itd]][itd]) {
+ zbefore= cl[best[iter][itd]][itd]->GetZ();
+ break;
+ }
}
- sumz = cl[ih][it]->GetZ();
- sum++;
- Double_t h01 = GetTiltFactor(cl[ih][it]);
- dz[it] = cl[ih][it]->GetZ()- zt[it];
- dy[it] = cl[ih][it]->GetY()+ dz[it]*h01 -yt[it];
+ for (Int_t itd = it+1; itd<t1-t0;itd++) {
+ if (cl[best[iter][itd]][itd]) {
+ zafter= cl[best[iter][itd]][itd]->GetZ();
+ break;
+ }
+ }
+ if (TMath::Abs(cl[best[iter][it]][it]->GetZ()-zbefore)>0.1&&TMath::Abs(cl[best[iter][it]][it]->GetZ()-zafter)>0.1) changes[iter]++;
+ //
+ Double_t dx = x[it]-xmean; // distance to reference x
+ sumz += cl[best[iter][it]][it]->GetZ();
sum++;
- sumdy += dy[it];
- sumdy2+= dy[it]*dy[it];
- Int_t label = TMath::Abs(track->GetLabel());
- if (cl[ih][it]->GetLabel(0)==label || cl[ih][it]->GetLabel(1)==label||cl[ih][it]->GetLabel(2)==label){
- ngood[ih]++;
+ sumdy += dy[best[iter][it]][it];
+ sumdy2+= dy[best[iter][it]][it]*dy[best[iter][it]][it];
+ sumx += dx;
+ sumx2 += dx*dx;
+ sumxy += dx*dy[best[iter][it]][it];
+ mpads += cl[best[iter][it]][it]->GetNPads();
+ if (cl[best[iter][it]][it]->GetLabel(0)==label || cl[best[iter][it]][it]->GetLabel(1)==label||cl[best[iter][it]][it]->GetLabel(2)==label){
+ ngood[iter]++;
}
else{
- nbad[ih]++;
+ nbad[iter]++;
+ }
+ }
+ //
+ // calculates line parameters
+ //
+ Double_t det = sum*sumx2-sumx*sumx;
+ angle[iter] = (sum*sumxy-sumx*sumdy)/det;
+ mean[iter] = (sumx2*sumdy-sumx*sumxy)/det;
+ meanz[iter] = sumz/sum;
+ moffset[iter] = sumdy/sum;
+ mpads /= sum; // mean number of pads
+ //
+ //
+ Double_t sigma2 = 0; // normalized residuals - for line fit
+ Double_t sigma1 = 0; // normalized residuals - constant fit
+ //
+ for (Int_t it=0;it<t1-t0;it++){
+ if (!cl[best[iter][it]][it]) continue;
+ Double_t dx = x[it]-xmean;
+ Double_t ytr = mean[iter]+angle[iter]*dx;
+ sigma2 += (dy[best[iter][it]][it]-ytr)*(dy[best[iter][it]][it]-ytr);
+ sigma1 += (dy[best[iter][it]][it]-moffset[iter])*(dy[best[iter][it]][it]-moffset[iter]);
+ sum++;
+ }
+ sigma2 /=(sum-2); // normalized residuals
+ sigma1 /=(sum-1); // normalized residuals
+ //
+ smean[iter] = sigma2*(sumx2/det); // estimated error2 of mean
+ sangle[iter] = sigma2*(sum/det); // estimated error2 of angle
+ smeanangle[iter] = sigma2*(-sumx/det); // correlation
+ //
+ //
+ sigmas[iter] = TMath::Sqrt(sigma1); //
+ smoffset[iter]= (sigma1/sum)+0.01*0.01; // sigma of mean offset + unisochronity sigma
+ //
+ // iterative choosing of "better path"
+ //
+ for (Int_t it=0;it<t1-t0;it++){
+ if (!cl[best[iter][it]][it]) continue;
+ //
+ Double_t sigmatr2 = smoffset[iter]+0.5*tany*tany; //add unisochronity + angular effect contribution
+ Double_t sweight = 1./sigmatr2+1./track->GetSigmaY2();
+ Double_t weighty = (moffset[iter]/sigmatr2)/sweight; // weighted mean
+ Double_t sigmacl = TMath::Sqrt(sigma1*sigma1+track->GetSigmaY2()); //
+ Double_t mindist=100000;
+ Int_t ihbest=0;
+ for (Int_t ih=0;ih<10;ih++){
+ if (!cl[ih][it]) break;
+ Double_t dist2 = (dy[ih][it]-weighty)/sigmacl;
+ dist2*=dist2; //chi2 distance
+ if (dist2<mindist){
+ mindist = dist2;
+ ihbest =ih;
+ }
+ }
+ best[iter+1][it]=ihbest;
+ }
+ //
+ // update best hypothesy if better chi2 according tracklet position and angle
+ //
+ Double_t sy2 = smean[iter] + track->GetSigmaY2();
+ Double_t sa2 = sangle[iter] + track->fCee;
+ Double_t say = track->fCey;
+ // Double_t chi20 = mean[bestiter]*mean[bestiter]/sy2+angle[bestiter]*angle[bestiter]/sa2;
+ // Double_t chi21 = mean[iter]*mean[iter]/sy2+angle[iter]*angle[iter]/sa2;
+
+ Double_t detchi = sy2*sa2-say*say;
+ Double_t invers[3] = {sa2/detchi, sy2/detchi, -say/detchi}; //inverse value of covariance matrix
+
+ Double_t chi20 = mean[bestiter]*mean[bestiter]*invers[0]+angle[bestiter]*angle[bestiter]*invers[1]+
+ 2.*mean[bestiter]*angle[bestiter]*invers[2];
+ Double_t chi21 = mean[iter]*mean[iter]*invers[0]+angle[iter]*angle[iter]*invers[1]+
+ 2*mean[iter]*angle[iter]*invers[2];
+ tchi2s[iter] =chi21;
+ //
+ if (changes[iter]<=changes[bestiter] && chi21<chi20) {
+ bestiter =iter;
+ }
+ }
+ //
+ //set clusters
+ //
+ Double_t sigma2 = sigmas[0]; // choose as sigma from 0 iteration
+ Short_t maxpos = -1;
+ Float_t maxcharge = 0;
+ Short_t maxpos4 = -1;
+ Float_t maxcharge4 = 0;
+ Short_t maxpos5 = -1;
+ Float_t maxcharge5 = 0;
+
+ //if (tchi2s[bestiter]>25.) sigma2*=tchi2s[bestiter]/25.;
+ //if (tchi2s[bestiter]>25.) sigma2=1000.; // dont'accept
+
+ Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(AliTRDcalibDB::Instance()->GetVdrift(0,0,0));
+ Double_t expectederr = sigma2*sigma2+0.01*0.01;
+ if (mpads>3.5) expectederr += (mpads-3.5)*0.04;
+ if (changes[bestiter]>1) expectederr+= changes[bestiter]*0.01;
+ expectederr+=(0.03*(tany-exB)*(tany-exB))*15;
+ // if (tchi2s[bestiter]>18.) expectederr*= tchi2s[bestiter]/18.;
+ //expectederr+=10000;
+ for (Int_t it=0;it<t1-t0;it++){
+ if (!cl[best[bestiter][it]][it]) continue;
+ cl[best[bestiter][it]][it]->SetSigmaY2(expectederr); // set cluster error
+ if (!cl[best[bestiter][it]][it]->IsUsed()){
+ cl[best[bestiter][it]][it]->SetY( cl[best[bestiter][it]][it]->GetY());
+ // cl[best[bestiter][it]][it]->Use();
+ }
+ //
+ // time bins with maximal charge
+ if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ())> maxcharge){
+ maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
+ maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin();
+ }
+
+ if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ())> maxcharge4){
+ if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>=4){
+ maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
+ maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
+ }
+ }
+ if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ())> maxcharge5){
+ if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>=5){
+ maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
+ maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
+ }
+ }
+ //
+ // time bins with maximal charge
+ if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ())> maxcharge){
+ maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
+ maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin();
+ }
+
+ if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ())> maxcharge4){
+ if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>=4){
+ maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
+ maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
}
}
- if (sumall[ih]>4){
- meanz[ih] = sumz/sum;
- meany[ih] = sumdy/sum;
- sigmay[ih] = TMath::Sqrt(sumdy2/sum-meany[ih]*meany[ih]);
+ if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ())> maxcharge5){
+ if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>=5){
+ maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
+ maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
+ }
+ }
+ clusters[it+t0] = indexes[best[bestiter][it]][it];
+ //if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>4 && cl[best[bestiter][it]][it]->GetLocalTimeBin()<18) clusters[it+t0] = indexes[best[bestiter][it]][it]; //Test
+ }
+ //
+ // set tracklet parameters
+ //
+ Double_t trackleterr2 = smoffset[bestiter]+0.01*0.01;
+ if (mpads>3.5) trackleterr2 += (mpads-3.5)*0.04;
+ trackleterr2+= changes[bestiter]*0.01;
+ trackleterr2*= TMath::Max(14.-nfound,1.);
+ trackleterr2+= 0.2*(tany-exB)*(tany-exB);
+ //
+ tracklet.Set(xmean, track2.GetY()+moffset[bestiter], meanz[bestiter], track2.GetAlpha(), trackleterr2); //set tracklet parameters
+ tracklet.SetTilt(h01);
+ tracklet.SetP0(mean[bestiter]);
+ tracklet.SetP1(angle[bestiter]);
+ tracklet.SetN(nfound);
+ tracklet.SetNCross(changes[bestiter]);
+ tracklet.SetPlane(plane);
+ tracklet.SetSigma2(expectederr);
+ tracklet.SetChi2(tchi2s[bestiter]);
+ tracklet.SetMaxPos(maxpos,maxpos4,maxpos5);
+ track->fTracklets[plane] = tracklet;
+ track->fNWrong+=nbad[0];
+ //
+ // Debuging part
+ //
+ TClonesArray array0("AliTRDcluster");
+ TClonesArray array1("AliTRDcluster");
+ array0.ExpandCreateFast(t1-t0+1);
+ array1.ExpandCreateFast(t1-t0+1);
+ TTreeSRedirector& cstream = *fDebugStreamer;
+ AliTRDcluster dummy;
+ Double_t dy0[100];
+ Double_t dyb[100];
+
+ for (Int_t it=0;it<t1-t0;it++){
+ dy0[it] = dy[0][it];
+ dyb[it] = dy[best[bestiter][it]][it];
+ if(cl[0][it]) {
+ new(array0[it]) AliTRDcluster(*cl[0][it]);
+ }
+ else{
+ new(array0[it]) AliTRDcluster(dummy);
+ }
+ if(cl[best[bestiter][it]][it]) {
+ new(array1[it]) AliTRDcluster(*cl[best[bestiter][it]][it]);
+ }
+ else{
+ new(array1[it]) AliTRDcluster(dummy);
}
}
- Int_t best =0;
- /*
- if (sumall[0]<sumall[1]-2&&sigmay[1]<0.1){
- if (sigmay[1]<sigmay[0]) best = 1; // if sigma is better
+ TGraph graph0(t1-t0,x,dy0);
+ TGraph graph1(t1-t0,x,dyb);
+ TGraph graphy(t1-t0,x,yt);
+ TGraph graphz(t1-t0,x,zt);
+ //
+ //
+ cstream<<"tracklet"<<
+ "track.="<<track<< // track parameters
+ "tany="<<tany<< // tangent of the local track angle
+ "xmean="<<xmean<< // xmean - reference x of tracklet
+ "tilt="<<h01<< // tilt angle
+ "nall="<<nall<< // number of foundable clusters
+ "nfound="<<nfound<< // number of found clusters
+ "clfound="<<clfound<< // total number of found clusters in road
+ "mpads="<<mpads<< // mean number of pads per cluster
+ "plane="<<plane<< // plane number
+ "road="<<road<< // the width of the used road
+ "graph0.="<<&graph0<< // x - y = dy for closest cluster
+ "graph1.="<<&graph1<< // x - y = dy for second closest cluster
+ "graphy.="<<&graphy<< // y position of the track
+ "graphz.="<<&graphz<< // z position of the track
+ // "fCl.="<<&array0<< // closest cluster
+ //"fCl2.="<<&array1<< // second closest cluster
+ "maxpos="<<maxpos<< // maximal charge postion
+ "maxcharge="<<maxcharge<< // maximal charge
+ "maxpos4="<<maxpos4<< // maximal charge postion - after bin 4
+ "maxcharge4="<<maxcharge4<< // maximal charge - after bin 4
+ "maxpos5="<<maxpos5<< // maximal charge postion - after bin 5
+ "maxcharge5="<<maxcharge5<< // maximal charge - after bin 5
+ //
+ "bestiter="<<bestiter<< // best iteration number
+ "tracklet.="<<&tracklet<< // corrspond to the best iteration
+ "tchi20="<<tchi2s[0]<< // chi2 of cluster in the 0 iteration
+ "tchi2b="<<tchi2s[bestiter]<< // chi2 of cluster in the best iteration
+ "sigmas0="<<sigmas[0]<< // residuals sigma
+ "sigmasb="<<sigmas[bestiter]<< // residulas sigma
+ //
+ "ngood0="<<ngood[0]<< // number of good clusters in 0 iteration
+ "nbad0="<<nbad[0]<< // number of bad clusters in 0 iteration
+ "ngoodb="<<ngood[bestiter]<< // in best iteration
+ "nbadb="<<nbad[bestiter]<< // in best iteration
+ //
+ "changes0="<<changes[0]<< // changes of pardrows in iteration number 0
+ "changesb="<<changes[bestiter]<< // changes of pardrows in best iteration
+ //
+ "moffset0="<<moffset[0]<< // offset fixing angle in iter=0
+ "smoffset0="<<smoffset[0]<< // sigma of offset fixing angle in iter=0
+ "moffsetb="<<moffset[bestiter]<< // offset fixing angle in iter=best
+ "smoffsetb="<<smoffset[bestiter]<< // sigma of offset fixing angle in iter=best
+ //
+ "mean0="<<mean[0]<< // mean dy in iter=0;
+ "smean0="<<smean[0]<< // sigma of mean dy in iter=0
+ "meanb="<<mean[bestiter]<< // mean dy in iter=best
+ "smeanb="<<smean[bestiter]<< // sigma of mean dy in iter=best
+ //
+ "angle0="<<angle[0]<< // angle deviation in the iteration number 0
+ "sangle0="<<sangle[0]<< // sigma of angular deviation in iteration number 0
+ "angleb="<<angle[bestiter]<< // angle deviation in the best iteration
+ "sangleb="<<sangle[bestiter]<< // sigma of angle deviation in the best iteration
+ //
+ "expectederr="<<expectederr<< // expected error of cluster position
+ "\n";
+ //
+ //
+ return nfound;
+}
+
+
+Int_t AliTRDtracker::Freq(Int_t n, const Int_t *inlist, Int_t *outlist, Bool_t down)
+{
+ //
+ // Sort eleements according occurancy
+ // The size of output array has is 2*n
+ //
+ Int_t * sindexS = new Int_t[n]; // temp array for sorting
+ Int_t * sindexF = new Int_t[2*n];
+ for (Int_t i=0;i<n;i++) sindexF[i]=0;
+ //
+ TMath::Sort(n,inlist, sindexS, down);
+ Int_t last = inlist[sindexS[0]];
+ Int_t val = last;
+ sindexF[0] = 1;
+ sindexF[0+n] = last;
+ Int_t countPos = 0;
+ //
+ // find frequency
+ for(Int_t i=1;i<n; i++){
+ val = inlist[sindexS[i]];
+ if (last == val) sindexF[countPos]++;
+ else{
+ countPos++;
+ sindexF[countPos+n] = val;
+ sindexF[countPos]++;
+ last =val;
}
- */
- Float_t quality0 = (sigmay[0]+TMath::Abs(meany[0]))*(1.+Float_t(changes[0])/Float_t(sumall[0]));
- Float_t quality1 = (sigmay[1]+TMath::Abs(meany[1]))*(1.+Float_t(changes[1])/Float_t(sumall[1]));
+ }
+ if (last==val) countPos++;
+ // sort according frequency
+ TMath::Sort(countPos, sindexF, sindexS, kTRUE);
+ for (Int_t i=0;i<countPos;i++){
+ outlist[2*i ] = sindexF[sindexS[i]+n];
+ outlist[2*i+1] = sindexF[sindexS[i]];
+ }
+ delete [] sindexS;
+ delete [] sindexF;
+
+ return countPos;
+}
+
+AliTRDtrack * AliTRDtracker::RegisterSeed(AliTRDseed * seeds, Double_t * params)
+{
+ //
+ //
+ //
+ Double_t alpha=AliTRDgeometry::GetAlpha();
+ Double_t shift=AliTRDgeometry::GetAlpha()/2.;
+ Double_t c[15];
+ c[0] = 0.2;
+ c[1] = 0 ; c[2] = 2;
+ c[3] = 0 ; c[4] = 0; c[5] = 0.02;
+ c[6] = 0 ; c[7] = 0; c[8] = 0; c[9] = 0.1;
+ c[10] = 0 ; c[11] = 0; c[12] = 0; c[13] = 0.0; c[14] = params[5]*params[5]*0.01;
+ //
+ Int_t index =0;
+ AliTRDcluster *cl =0;
+ for (Int_t ilayer=0;ilayer<6;ilayer++){
+ if (seeds[ilayer].isOK()){
+ for (Int_t itime=22;itime>0;itime--){
+ if (seeds[ilayer].fIndexes[itime]>0){
+ index = seeds[ilayer].fIndexes[itime];
+ cl = seeds[ilayer].fClusters[itime];
+ break;
+ }
+ }
+ }
+ if (index>0) break;
+ }
+ if (cl==0) return 0;
+ AliTRDtrack * track = new AliTRDtrack(cl,index,¶ms[1],c, params[0],params[6]*alpha+shift);
+ track->PropagateTo(params[0]-5.);
+ track->ResetCovariance(1);
+ //
+ Int_t rc=FollowBackProlongation(*track);
+ if (rc<30) {
+ delete track;
+ track =0;
+ }else{
+ track->CookdEdx();
+ CookdEdxTimBin(*track);
+ CookLabel(track, 0.9);
+ }
+ return track;
+}
+
+
+
+
+
- if (quality0>quality1){
- best = 1;
+AliTRDseed::AliTRDseed()
+{
+ //
+ //
+ fTilt =0; // tilting angle
+ fPadLength = 0; // pad length
+ fX0 = 0; // x0 position
+ for (Int_t i=0;i<25;i++){
+ fX[i]=0; // !x position
+ fY[i]=0; // !y position
+ fZ[i]=0; // !z position
+ fIndexes[i]=0; // !indexes
+ fClusters[i]=0; // !clusters
}
+ for (Int_t i=0;i<2;i++){
+ fYref[i]=0; // reference y
+ fZref[i]=0; // reference z
+ fYfit[i]=0; // y fit position +derivation
+ fYfitR[i]=0; // y fit position +derivation
+ fZfit[i]=0; // z fit position
+ fZfitR[i]=0; // z fit position
+ fLabels[i]=0; // labels
+ }
+ fSigmaY = 0;
+ fSigmaY2 = 0;
+ fMeanz=0; // mean vaue of z
+ fZProb=0; // max probbable z
+ fMPads=0;
+ //
+ fN=0; // number of associated clusters
+ fN2=0; // number of not crossed
+ fNUsed=0; // number of used clusters
+ fNChange=0; // change z counter
+}
+void AliTRDseed::Reset(){
+ //
+ // reset seed
+ //
+ for (Int_t i=0;i<25;i++){
+ fX[i]=0; // !x position
+ fY[i]=0; // !y position
+ fZ[i]=0; // !z position
+ fIndexes[i]=0; // !indexes
+ fClusters[i]=0; // !clusters
+ fUsable[i] = kFALSE;
+ }
+ for (Int_t i=0;i<2;i++){
+ fYref[i]=0; // reference y
+ fZref[i]=0; // reference z
+ fYfit[i]=0; // y fit position +derivation
+ fYfitR[i]=0; // y fit position +derivation
+ fZfit[i]=0; // z fit position
+ fZfitR[i]=0; // z fit position
+ fLabels[i]=-1; // labels
+ }
+ fSigmaY =0; //"robust" sigma in y
+ fSigmaY2=0; //"robust" sigma in y
+ fMeanz =0; // mean vaue of z
+ fZProb =0; // max probbable z
+ fMPads =0;
+ //
+ fN=0; // number of associated clusters
+ fN2=0; // number of not crossed
+ fNUsed=0; // number of used clusters
+ fNChange=0; // change z counter
+}
+void AliTRDseed::CookLabels(){
+ //
+ // cook 2 labels for seed
+ //
+ Int_t labels[200];
+ Int_t out[200];
+ Int_t nlab =0;
+ for (Int_t i=0;i<25;i++){
+ if (!fClusters[i]) continue;
+ for (Int_t ilab=0;ilab<3;ilab++){
+ if (fClusters[i]->GetLabel(ilab)>=0){
+ labels[nlab] = fClusters[i]->GetLabel(ilab);
+ nlab++;
+ }
+ }
+ }
+ Int_t nlab2 = AliTRDtracker::Freq(nlab,labels,out,kTRUE);
+ fLabels[0] = out[0];
+ if (nlab2>1 && out[3]>1) fLabels[1] =out[2];
+}
+
+void AliTRDseed::UseClusters()
+{
+ //
+ // use clusters
+ //
+ for (Int_t i=0;i<25;i++){
+ if (!fClusters[i]) continue;
+ if (!(fClusters[i]->IsUsed())) fClusters[i]->Use();
+ }
+}
+
+
+void AliTRDseed::Update(){
+ //
+ //
+ //
+ const Float_t ratio = 0.8;
+ const Int_t kClmin = 6;
+ const Float_t kmaxtan = 2;
+ if (TMath::Abs(fYref[1])>kmaxtan) return; // too much inclined track
+ //
+ Float_t sigmaexp = 0.05+TMath::Abs(fYref[1]*0.25); // expected r.m.s in y direction
+ Float_t ycrosscor = fPadLength*fTilt*0.5; // y correction for crossing
+ fNChange =0;
+ //
+ Double_t sumw, sumwx,sumwx2;
+ Double_t sumwy, sumwxy, sumwz,sumwxz;
+ Int_t zints[25]; // histograming of the z coordinate - get 1 and second max probable coodinates in z
+ Int_t zouts[50]; //
+ Float_t allowedz[25]; // allowed z for given time bin
+ Float_t yres[25]; // residuals from reference
+ Float_t anglecor = fTilt*fZref[1]; //correction to the angle
+ //
//
- for (Int_t it=t0;it<t1;it++){
- if (!cl[best][it]) continue;
- Double_t h01 = GetTiltFactor(cl[best][it]);
- dz[it] = cl[best][it]->GetZ()- zt[it];
- dy[it] = cl[best][it]->GetY()+ dz[it]*h01 -yt[it];
+ fN=0; fN2 =0;
+ for (Int_t i=0;i<25;i++){
+ yres[i] =10000;
+ if (!fClusters[i]) continue;
+ yres[i] = fY[i]-fYref[0]-(fYref[1]+anglecor)*fX[i]; // residual y
+ zints[fN] = Int_t(fZ[i]);
+ fN++;
+ }
+ if (fN<kClmin) return;
+ Int_t nz = AliTRDtracker::Freq(fN,zints,zouts,kFALSE);
+ fZProb = zouts[0];
+ if (nz<=1) zouts[3]=0;
+ if (zouts[1]+zouts[3]<kClmin) return;
+ //
+ if (TMath::Abs(zouts[0]-zouts[2])>12.) zouts[3]=0; // z distance bigger than pad - length
+ //
+ Int_t breaktime = -1;
+ Bool_t mbefore = kFALSE;
+ Int_t cumul[25][2];
+ Int_t counts[2]={0,0};
+ //
+ if (zouts[3]>=3){
+ //
+ // find the break time allowing one chage on pad-rows with maximal numebr of accepted clusters
//
- if (TMath::Abs(dy[it])<2.5*sigmay[best])
- clusters[it] = indexes[best][it];
+ fNChange=1;
+ for (Int_t i=0;i<25;i++){
+ cumul[i][0] = counts[0];
+ cumul[i][1] = counts[1];
+ if (TMath::Abs(fZ[i]-zouts[0])<2) counts[0]++;
+ if (TMath::Abs(fZ[i]-zouts[2])<2) counts[1]++;
+ }
+ Int_t maxcount = 0;
+ for (Int_t i=0;i<24;i++) {
+ Int_t after = cumul[24][0]-cumul[i][0];
+ Int_t before = cumul[i][1];
+ if (after+before>maxcount) {
+ maxcount=after+before;
+ breaktime=i;
+ mbefore=kFALSE;
+ }
+ after = cumul[24][1]-cumul[i][1];
+ before = cumul[i][0];
+ if (after+before>maxcount) {
+ maxcount=after+before;
+ breaktime=i;
+ mbefore=kTRUE;
+ }
+ }
+ breaktime-=1;
}
-
- if (nbad[0]>4){
- nbad[0] = nfound;
+ for (Int_t i=0;i<25;i++){
+ if (i>breaktime) allowedz[i] = mbefore ? zouts[2]:zouts[0];
+ if (i<=breaktime) allowedz[i] = (!mbefore) ? zouts[2]:zouts[0];
+ }
+ if ( (allowedz[0]>allowedz[24] && fZref[1]<0) || (allowedz[0]<allowedz[24] && fZref[1]>0)){
+ //
+ // tracklet z-direction not in correspondance with track z direction
+ //
+ fNChange =0;
+ for (Int_t i=0;i<25;i++){
+ allowedz[i] = zouts[0]; //only longest taken
+ }
}
- return nfound;
+ //
+ if (fNChange>0){
+ //
+ // cross pad -row tracklet - take the step change into account
+ //
+ for (Int_t i=0;i<25;i++){
+ if (!fClusters[i]) continue;
+ if (TMath::Abs(fZ[i]-allowedz[i])>2) continue;
+ yres[i] = fY[i]-fYref[0]-(fYref[1]+anglecor)*fX[i]; // residual y
+ if (TMath::Abs(fZ[i]-fZProb)>2){
+ if (fZ[i]>fZProb) yres[i]+=fTilt*fPadLength;
+ if (fZ[i]<fZProb) yres[i]-=fTilt*fPadLength;
+ }
+ }
+ }
+ //
+ Double_t yres2[25];
+ Double_t mean,sigma;
+ for (Int_t i=0;i<25;i++){
+ if (!fClusters[i]) continue;
+ if (TMath::Abs(fZ[i]-allowedz[i])>2) continue;
+ yres2[fN2] = yres[i];
+ fN2++;
+ }
+ if (fN2<kClmin){
+ fN2 = 0;
+ return;
+ }
+ EvaluateUni(fN2,yres2,mean,sigma,Int_t(fN2*ratio-2));
+ if (sigma<sigmaexp*0.8) sigma=sigmaexp;
+ fSigmaY = sigma;
+ //
+ //
+ // reset sums
+ sumw=0; sumwx=0; sumwx2=0;
+ sumwy=0; sumwxy=0; sumwz=0;sumwxz=0;
+ fN2 =0;
+ fMeanz =0;
+ fMPads =0;
+ //
+ for (Int_t i=0;i<25;i++){
+ fUsable[i]=kFALSE;
+ if (!fClusters[i]) continue;
+ if (TMath::Abs(fZ[i]-allowedz[i])>2) continue;
+ if (TMath::Abs(yres[i]-mean)>4.*sigma) continue;
+ fUsable[i] = kTRUE;
+ fN2++;
+ fMPads+=fClusters[i]->GetNPads();
+ Float_t weight =1;
+ if (fClusters[i]->GetNPads()>4) weight=0.5;
+ if (fClusters[i]->GetNPads()>5) weight=0.2;
+ //
+ Double_t x = fX[i];
+ sumw+=weight; sumwx+=x*weight; sumwx2+=x*x*weight;
+ sumwy+=weight*yres[i]; sumwxy+=weight*(yres[i])*x;
+ sumwz+=weight*fZ[i]; sumwxz+=weight*fZ[i]*x;
+ }
+ if (fN2<kClmin){
+ fN2 = 0;
+ return;
+ }
+ fMeanz = sumwz/sumw;
+ Float_t correction =0;
+ if (fNChange>0){
+ // tracklet on boundary
+ if (fMeanz<fZProb) correction = ycrosscor;
+ if (fMeanz>fZProb) correction = -ycrosscor;
+ }
+ Double_t det = sumw*sumwx2-sumwx*sumwx;
+ fYfitR[0] = (sumwx2*sumwy-sumwx*sumwxy)/det;
+ fYfitR[1] = (sumw*sumwxy-sumwx*sumwy)/det;
+ //
+ fSigmaY2 =0;
+ for (Int_t i=0;i<25;i++){
+ if (!fUsable[i]) continue;
+ Float_t delta = yres[i]-fYfitR[0]-fYfitR[1]*fX[i];
+ fSigmaY2+=delta*delta;
+ }
+ fSigmaY2 = TMath::Sqrt(fSigmaY2/Float_t(fN2-2));
+ //
+ fZfitR[0] = (sumwx2*sumwz-sumwx*sumwxz)/det;
+ fZfitR[1] = (sumw*sumwxz-sumwx*sumwz)/det;
+ fZfit[0] = (sumwx2*sumwz-sumwx*sumwxz)/det;
+ fZfit[1] = (sumw*sumwxz-sumwx*sumwz)/det;
+ fYfitR[0] += fYref[0]+correction;
+ fYfitR[1] += fYref[1];
+ fYfit[0] = fYfitR[0];
+ fYfit[1] = fYfitR[1];
+ //
+ //
+ UpdateUsed();
}
+
+void AliTRDseed::UpdateUsed(){
+ //
+ fNUsed =0;
+ for (Int_t i=0;i<25;i++){
+ if (!fClusters[i]) continue;
+ if ((fClusters[i]->IsUsed())) fNUsed++;
+ }
+}
+
+
+void AliTRDseed::EvaluateUni(Int_t nvectors, Double_t *data, Double_t &mean, Double_t &sigma, Int_t hh)
+{
+ //
+ // robust estimator in 1D case MI version
+ //
+ //for the univariate case
+ //estimates of location and scatter are returned in mean and sigma parameters
+ //the algorithm works on the same principle as in multivariate case -
+ //it finds a subset of size hh with smallest sigma, and then returns mean and
+ //sigma of this subset
+
+ if (hh==0)
+ hh=(nvectors+2)/2;
+ Double_t faclts[]={2.6477,2.5092,2.3826,2.2662,2.1587,2.0589,1.9660,1.879,1.7973,1.7203,1.6473};
+ Int_t *index=new Int_t[nvectors];
+ TMath::Sort(nvectors, data, index, kFALSE);
+ //
+ Int_t nquant = TMath::Min(Int_t(Double_t(((hh*1./nvectors)-0.5)*40))+1, 11);
+ Double_t factor = faclts[nquant-1];
+ //
+ //
+ Double_t sumx =0;
+ Double_t sumx2 =0;
+ Int_t bestindex = -1;
+ Double_t bestmean = 0;
+ Double_t bestsigma = data[index[nvectors-1]]-data[index[0]]; // maximal possible sigma
+ for (Int_t i=0; i<hh; i++){
+ sumx += data[index[i]];
+ sumx2 += data[index[i]]*data[index[i]];
+ }
+ //
+ Double_t norm = 1./Double_t(hh);
+ Double_t norm2 = 1./Double_t(hh-1);
+ for (Int_t i=hh; i<nvectors; i++){
+ Double_t cmean = sumx*norm;
+ Double_t csigma = (sumx2 - hh*cmean*cmean)*norm2;
+ if (csigma<bestsigma){
+ bestmean = cmean;
+ bestsigma = csigma;
+ bestindex = i-hh;
+ }
+ //
+ //
+ sumx += data[index[i]]-data[index[i-hh]];
+ sumx2 += data[index[i]]*data[index[i]]-data[index[i-hh]]*data[index[i-hh]];
+ }
+
+ Double_t bstd=factor*TMath::Sqrt(TMath::Abs(bestsigma));
+ mean = bestmean;
+ sigma = bstd;
+ delete [] index;
+}
+
+
+Float_t AliTRDseed::FitRiemanTilt(AliTRDseed * cseed, Bool_t terror){
+ //
+ //
+ //
+ TLinearFitter fitterT2(4,"hyp4"); // fitting with tilting pads - kz not fixed
+ fitterT2.StoreData(kTRUE);
+ Float_t xref2 = (cseed[2].fX0+cseed[3].fX0)*0.5; // reference x0 for z
+ //
+ Int_t npointsT =0;
+ fitterT2.ClearPoints();
+ for (Int_t iLayer=0; iLayer<6;iLayer++){
+ if (!cseed[iLayer].isOK()) continue;
+ Double_t tilt = cseed[iLayer].fTilt;
+
+ for (Int_t itime=0;itime<25;itime++){
+ if (!cseed[iLayer].fUsable[itime]) continue;
+ Double_t x = cseed[iLayer].fX[itime]+cseed[iLayer].fX0-xref2; // x relative to the midle chamber
+ Double_t y = cseed[iLayer].fY[itime];
+ Double_t z = cseed[iLayer].fZ[itime];
+ // tilted rieman
+ //
+ Double_t uvt[6];
+ Double_t x2 = cseed[iLayer].fX[itime]+cseed[iLayer].fX0; // global x
+ Double_t t = 1./(x2*x2+y*y);
+ uvt[1] = t; // t
+ uvt[0] = 2.*x2*uvt[1]; // u
+ uvt[2] = 2.0*tilt*uvt[1];
+ uvt[3] = 2.0*tilt*x*uvt[1];
+ uvt[4] = 2.0*(y+tilt*z)*uvt[1];
+ //
+ Double_t error = 2*uvt[1];
+ if (terror) error*=cseed[iLayer].fSigmaY;
+ else {error *=0.2;} //default error
+ fitterT2.AddPoint(uvt,uvt[4],error);
+ npointsT++;
+ }
+ }
+ fitterT2.Eval();
+ Double_t rpolz0 = fitterT2.GetParameter(3);
+ Double_t rpolz1 = fitterT2.GetParameter(4);
+ //
+ // linear fitter - not possible to make boundaries
+ // non accept non possible z and dzdx combination
+ //
+ Bool_t acceptablez =kTRUE;
+ for (Int_t iLayer=0; iLayer<6;iLayer++){
+ if (cseed[iLayer].isOK()){
+ Double_t zT2 = rpolz0+rpolz1*(cseed[iLayer].fX0 - xref2);
+ if (TMath::Abs(cseed[iLayer].fZProb-zT2)>cseed[iLayer].fPadLength*0.5+1)
+ acceptablez = kFALSE;
+ }
+ }
+ if (!acceptablez){
+ Double_t zmf = cseed[2].fZref[0]+cseed[2].fZref[1]*(xref2-cseed[2].fX0);
+ Double_t dzmf = (cseed[2].fZref[1]+ cseed[3].fZref[1])*0.5;
+ fitterT2.FixParameter(3,zmf);
+ fitterT2.FixParameter(4,dzmf);
+ fitterT2.Eval();
+ fitterT2.ReleaseParameter(3);
+ fitterT2.ReleaseParameter(4);
+ rpolz0 = fitterT2.GetParameter(3);
+ rpolz1 = fitterT2.GetParameter(4);
+ }
+ //
+ Double_t chi2TR = fitterT2.GetChisquare()/Float_t(npointsT);
+ Double_t params[3];
+ params[0] = fitterT2.GetParameter(0);
+ params[1] = fitterT2.GetParameter(1);
+ params[2] = fitterT2.GetParameter(2);
+ Double_t CR = 1+params[1]*params[1]-params[2]*params[0];
+ for (Int_t iLayer = 0; iLayer<6;iLayer++){
+ Double_t x = cseed[iLayer].fX0;
+ Double_t y=0,dy=0, z=0, dz=0;
+ // y
+ Double_t res2 = (x*params[0]+params[1]);
+ res2*=res2;
+ res2 = 1.-params[2]*params[0]+params[1]*params[1]-res2;
+ if (res2>=0){
+ res2 = TMath::Sqrt(res2);
+ y = (1-res2)/params[0];
+ }
+ //dy
+ Double_t x0 = -params[1]/params[0];
+ if (-params[2]*params[0]+params[1]*params[1]+1>0){
+ Double_t Rm1 = params[0]/TMath::Sqrt(-params[2]*params[0]+params[1]*params[1]+1);
+ if ( 1./(Rm1*Rm1)-(x-x0)*(x-x0)>0){
+ Double_t res = (x-x0)/TMath::Sqrt(1./(Rm1*Rm1)-(x-x0)*(x-x0));
+ if (params[0]<0) res*=-1.;
+ dy = res;
+ }
+ }
+ z = rpolz0+rpolz1*(x-xref2);
+ dz = rpolz1;
+ cseed[iLayer].fYref[0] = y;
+ cseed[iLayer].fYref[1] = dy;
+ cseed[iLayer].fZref[0] = z;
+ cseed[iLayer].fZref[1] = dz;
+ cseed[iLayer].fC = CR;
+ //
+ }
+ return chi2TR;
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff