#include "AliTRDgeometry.h"
#include "AliTRDparameter.h"
#include "AliTRDpadPlane.h"
-#include "AliTRDgeometryFull.h"
+#include "AliTRDgeometryDetail.h"
#include "AliTRDcluster.h"
#include "AliTRDtrack.h"
#include "AliESD.h"
+#include "TTreeStream.h"
+#include "TGraph.h"
#include "AliTRDtracker.h"
+//
ClassImp(AliTRDtracker)
const Double_t AliTRDtracker::fgkMaxChi2 = 12.;
+// const Double_t AliTRDtracker::fgkOffset = -0.012;
+// const Double_t AliTRDtracker::fgkOffsetX = 0.35;
+// const Double_t AliTRDtracker::fgkCoef = 0.00;
+// const Double_t AliTRDtracker::fgkMean = 8.;
+// const Double_t AliTRDtracker::fgkDriftCorrection = 1.07;
+// const Double_t AliTRDtracker::fgkExB = 0.072;
+
+ const Double_t AliTRDtracker::fgkOffset = -0.015;
+const Double_t AliTRDtracker::fgkOffsetX = 0.26; // "time offset"
+ const Double_t AliTRDtracker::fgkCoef = 0.0096; // angular shift
+ const Double_t AliTRDtracker::fgkMean = 0.;
+ const Double_t AliTRDtracker::fgkDriftCorrection = 1.04; // drift coefficient correction
+ const Double_t AliTRDtracker::fgkExB = 0.072; // ExB angle - for error parameterization
+
+
+// poscorrection = fgkCoef*(GetLocalTimeBin() - fgkMean)+fgkOffset;
+
const Int_t AliTRDtracker::fgkFirstPlane = 5;
const Int_t AliTRDtracker::fgkLastPlane = 17;
-
//____________________________________________________________________
AliTRDtracker::AliTRDtracker():AliTracker(),
fGeom(0),
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()
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 = new AliTRDgeometryDetail();
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 = new AliTRDparameter("Pica","Vyjebana");
}
+ fPar = new AliTRDparameter("Pica","Vyjebana");
fPar->Init();
savedir->cd();
+
// fGeom->SetT0(fTzero);
fNclusters = 0;
fHoles[icham][trS]=fGeom->IsHole(0,icham,geomS);
}
}
-
AliTRDpadPlane *padPlane = fPar->GetPadPlane(0,0);
- Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle());
+ Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle());
+ // Float_t tiltAngle = TMath::Abs(fPar->GetTiltingAngle());
if(tiltAngle < 0.1) {
fNoTilt = kTRUE;
}
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()
+ Double_t dx = fgkDriftCorrection*(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
fMaxGap = (Int_t) (fTimeBinsPerPlane * fGeom->Nplan() * fgkSkipDepth);
fVocal = kFALSE;
+
+ fDebugStreamer = new TTreeSRedirector("TRDdebug.root");
savedir->cd();
}
for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) {
delete fTrSec[geomS];
}
-
+ if (fDebugStreamer) {
+ //fDebugStreamer->Close();
+ delete fDebugStreamer;
+ }
}
//_____________________________________________________________________
}
-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
//
Int_t iplane = fGeom->GetPlane(cli->GetDetector());
if (iplane==plane) {
cl = cli;
+ index = indexes[i];
break;
}
}
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());
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, AliESDtrack::kTRDbackup);
+ }
}
}
//
//Propagation to the TOF (I.Belikov)
- CookdEdxTimBin(*track);
+
if (track->GetStop()==kFALSE){
Double_t xtof=371.;
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());
+ //
+ // 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";
+ }
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;
+ // MakeSeedsMI(3,5); //new seeding
+
+
fSeeds->Clear(); fNseeds=0;
delete [] index;
delete [] quality;
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);
-// }
+ 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();
for (Int_t i=0;i<200;i++) {
if (t.GetNumberOfClusters() >= foundMin) {
// UseClusters(&t);
//CookLabel(pt, 1-fgkLabelFraction);
- // t.CookdEdx();
+ t.CookdEdx();
+ CookdEdxTimBin(t);
}
found++;
// cout<<found<<'\r';
if(PropagateToTPC(t)) {
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);
pt2->CookdEdx(0.,1.);
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 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);
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();
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());
+ t.SetSampledEdx(TMath::Abs(cl->GetQ()/dx));
Int_t det = cl->GetDetector();
Int_t plane = fGeom->GetPlane(det);
// layers confirms prolongation if a close cluster is found.
// Returns the number of clusters expected to be found in sensitive layers
-
- Float_t wIndex, wTB, wChi2;
- Float_t wYrt, wYclosest, wYcorrect, wYwindow;
- Float_t wZrt, wZclosest, wZcorrect, wZwindow;
- Float_t wSigmaC2, wSigmaTgl2, wSigmaY2, wSigmaZ2;
-
- Int_t trackIndex = t.GetLabel();
Int_t tryAgain=fMaxGap;
Double_t alpha=t.GetAlpha();
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;
+ //Double_t radLength, rho, x, dx, y, ymax = 0, z;
+ Double_t radLength, rho, x, dx, y, z;
Bool_t lookForCluster;
Int_t expectedNumberOfClusters = 0;
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 zone =0;
Int_t nr;
+ Float_t ratio0=0;
+ AliTRDtracklet tracklet;
+ //
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();
z = t.GetZ();
if(!t.PropagateTo(x,radLength,rho)) break;
- // if (!AdjustSector(&t)) break;
//
// MI -fix untill correct material desription will be implemented
//
- Float_t angle = t.GetAlpha(); // MI - if rotation - we go through the material
- if (!AdjustSector(&t)) break;
- Int_t cross = kFALSE;
- 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;
- }
+ //Int_t nrotate = t.GetNRotate();
+ if (!AdjustSector(&t)) break;
//
//
- s = t.GetSector();
- if (!t.PropagateTo(x,radLength,rho)) break;
-
y = t.GetY();
z = t.GetZ();
-
- // Barrel Tracks [SR, 04.04.2003]
-
s = t.GetSector();
- if (fTrSec[s]->GetLayer(nr)->IsSensitive() !=
- fTrSec[s]->GetLayer(nr+1)->IsSensitive() ) {
-
-// if (IsStoringBarrel()) StoreBarrelTrack(&t, nRefPlane++, kTrackBack);
- }
-
- if (fTrSec[s]->GetLayer(nr-1)->IsSensitive() &&
- ! fTrSec[s]->GetLayer(nr)->IsSensitive()) {
- isNewLayer = kTRUE;
- } else {isNewLayer = kFALSE;}
-
- y = t.GetY();
- z = t.GetZ();
// now propagate to the middle plane of the next time bin
fTrSec[s]->GetLayer(nr+1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster);
- if (crosz){
- rho = 1000*2.7; radLength = 24.01; //TEMPORARY - aluminium in between z - will be detected using GeoModeler in future versions
- }
+// if (nrotate!=t.GetNRotate()){
+// rho = 1000*2.7; radLength = 24.01; //TEMPORARY - aluminium in between z - will be detected using GeoModeler in future versions
+// }
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(!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 (clusters[nr]==-1) {
+ Float_t ncl = FindClusters(s,nr,nr+30,&t,clusters,tracklet);
+ 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 (ncl>4){
+// t.PropagateTo(tracklet.GetX());
+// t.UpdateMI(tracklet);
+// nr = fTrSec[0]->GetLayerNumber(t.GetX())+1;
+// continue;
+// }
+ }
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;
+ if((t.GetSigmaY2() + sy2) < 0) {
+ printf("problem\n");
+ 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;
}
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) {
+
+ if (clusters[nr+1]>0) {
index = clusters[nr+1];
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);
+ t.SetSampledEdx(TMath::Abs(cl->GetQ()/dx));
Double_t h01 = GetTiltFactor(cl);
Int_t det = cl->GetDetector();
Int_t plane = fGeom->GetPlane(det);
}
if(!t.UpdateMI(cl,maxChi2,index,h01,plane)) {
if(!t.Update(cl,maxChi2,index,h01)) {
- if(!tryAgain--) return 0;
+ //if(!tryAgain--) return 0;
}
}
else tryAgain=fMaxGap;
- }
+ //
+
+ if (cl->GetLocalTimeBin()==1&&t.fN>20 && float(t.fChi2)/float(t.fN)<5){
+ Float_t ratio1 = Float_t(t.fN)/Float_t(t.fNExpected);
+ if (tracklet.GetChi2()<18&&ratio0>0.8&&ratio1>0.6 &&ratio0+ratio1>1.5 && t.GetNCross()==0 && TMath::Abs(t.GetSnp())<0.85){
+ t.MakeBackupTrack(); // make backup of the track until is gold
+ }
+ }
+
+ }
else {
- if (tryAgain==0) break;
- tryAgain--;
+ // if (tryAgain==0) break;
+ //tryAgain--;
}
-
- isNewLayer = kFALSE;
-
+
+
}
}
}
else
t.SetStop(kFALSE);
return expectedNumberOfClusters;
-
-
+
+
}
//---------------------------------------------------------------------------
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);
+ if (cl->GetNPads()<5) t.SetSampledEdx(TMath::Abs(cl->GetQ()/dx));
//t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters());
t.Update(cl,chi2,iCluster[nr-1],h01);
}
}
}
+//__________________________________________________________________________
+void AliTRDtracker::MakeSeedsMI(Int_t /*inner*/, Int_t /*outer*/)
+{
+ //
+ // Creates seeds using clusters between position inner plane and outer plane
+ //
+
+ const Double_t maxtheta = 2;
+ const Double_t maxphi = 1.5;
+ Int_t maxSec=AliTRDgeometry::kNsect;
+
+ //
+ // find the maximal and minimal layer for the planes
+ // fucking "object oriented" geometry - find the time bin range for different planes
+ //
+ Int_t layers[6][2];
+ 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;
+ }
+ }
+ //
+
+ Int_t ilayer1 = layers[5][1]; // time bin in mplification region
+ Int_t ilayer2 = layers[3][1]; //
+ Int_t ilayerM = layers[4][1]; //
+ //
+ Double_t x1 = fTrSec[0]->GetX(ilayer1);
+ Double_t x2 = fTrSec[0]->GetX(ilayer2);
+ Double_t xm = fTrSec[0]->GetX(ilayerM);
+ Double_t dist = x2-x1;
+ // Int_t indexes1[20];
+ //Int_t indexes2[20];
+ AliTRDcluster *clusters1[15],*clusters2[15],*clustersM[15];
+ //
+ //
+ for (Int_t ns=0; ns<maxSec; ns++) {
+ AliTRDpropagationLayer& layer1=*(fTrSec[ns]->GetLayer(ilayer1)); //select propagation layers
+ AliTRDpropagationLayer& layer2=*(fTrSec[ns]->GetLayer(ilayer2));
+ //
+ for (Int_t icl1=0;icl1<layer1;icl1++){
+ AliTRDcluster *cl1 = layer1[icl1];
+ if (!cl1) continue;
+ Double_t y1 = cl1->GetY();
+ Double_t z1 = cl1->GetZ();
+ //
+ for (Int_t icl2=0;icl2<layer2;icl2++){
+ AliTRDcluster *cl2 = layer2[icl2];
+ if (!cl2) continue;
+ Double_t y2 = cl2->GetY();
+ Double_t z2 = cl2->GetZ();
+ Double_t tanphi = (y2-y1)/dist;
+ Double_t tantheta = (z2-z1)/dist;
+ if (TMath::Abs(tanphi)>maxphi) continue;
+ if (TMath::Abs(tantheta)>maxtheta) continue;
+ //
+ clusters1[0] = cl1;
+ clusters2[0] = cl2;
+ Double_t road = 0.5+TMath::Abs(tanphi)*1;
+ Int_t ncl=0;
+ Double_t sum1=0, sumx1=0,sum2x1=0,sumxy1=0, sumy1=0;
+ Double_t sum2=0, sumx2=0,sum2x2=0,sumxy2=0, sumy2=0;
+ //
+ for (Int_t dlayer=1;dlayer<15;dlayer++){
+ clusters1[dlayer]=0;
+ clusters2[dlayer]=0;
+ AliTRDpropagationLayer& layer1C=*(fTrSec[ns]->GetLayer(ilayer1-dlayer)); //select propagation layers
+ AliTRDpropagationLayer& layer2C=*(fTrSec[ns]->GetLayer(ilayer2-dlayer)); //
+ Double_t yy1 = y1+(tanphi) *(layer1C.GetX()-x1);
+ Double_t zz1 = z1+(tantheta)*(layer1C.GetX()-x1);
+ Double_t yy2 = y1+(tanphi) *(layer2C.GetX()-x1);
+ Double_t zz2 = z1+(tantheta)*(layer2C.GetX()-x1);
+ Int_t index1 = layer1C.FindNearestCluster(yy1,zz1,road);
+ Int_t index2 = layer2C.FindNearestCluster(yy2,zz2,road);
+ if (index1>=0) {
+ clusters1[dlayer]= (AliTRDcluster*)GetCluster(index1);
+ ncl++;
+ sum1++;
+ Double_t dx = layer1C.GetX()-x1;
+ sumx1 +=dx;
+ sum2x1+=dx*dx;
+ sumxy1+=dx*clusters1[dlayer]->GetY();
+ sumy1 +=clusters1[dlayer]->GetY();
+ }
+ if (index2>=0) {
+ clusters2[dlayer]= (AliTRDcluster*)GetCluster(index2);
+ ncl++;
+ sum2++;
+ Double_t dx = layer2C.GetX()-x2;
+ sumx2 +=dx;
+ sum2x2+=dx*dx;
+ sumxy2+=dx*clusters2[dlayer]->GetY();
+ sumy2 +=clusters2[dlayer]->GetY();
+ }
+ }
+ if (sum1<10) continue;
+ if (sum2<10) continue;
+ //
+ Double_t det1 = sum1*sum2x1-sumx1*sumx1;
+ Double_t angle1 = (sum1*sumxy1-sumx1*sumy1)/det1;
+ Double_t pos1 = (sum2x1*sumy1-sumx1*sumxy1)/det1; // at x1
+ //
+ Double_t det2 = sum2*sum2x2-sumx2*sumx2;
+ Double_t angle2 = (sum2*sumxy2-sumx2*sumy2)/det2;
+ Double_t pos2 = (sum2x2*sumy2-sumx2*sumxy2)/det2; // at x2
+ //
+ //
+
+ Double_t sumM=0, sumxM=0,sum2xM=0,sumxyM=0, sumyM=0;
+ //
+ for (Int_t dlayer=1;dlayer<15;dlayer++){
+ clustersM[dlayer]=0;
+ AliTRDpropagationLayer& layerM=*(fTrSec[ns]->GetLayer(ilayerM-dlayer)); //select propagation layers
+ Double_t yyM = y1+(tanphi) *(layerM.GetX()-x1);
+ Double_t zzM = z1+(tantheta)*(layerM.GetX()-x1);
+ Int_t indexM = layerM.FindNearestCluster(yyM,zzM,road);
+ if (indexM>=0) {
+ clustersM[dlayer]= (AliTRDcluster*)GetCluster(indexM);
+ ncl++;
+ sumM++;
+ Double_t dx = layerM.GetX()-xm;
+ sumxM +=dx;
+ sum2xM+=dx*dx;
+ sumxyM+=dx*clustersM[dlayer]->GetY();
+ sumyM +=clustersM[dlayer]->GetY();
+ }
+ }
+ Double_t detM = sumM*sum2xM-sumxM*sumxM;
+ Double_t posM=0, angleM=0;
+ if (TMath::Abs(detM)>0.0000001){
+ angleM = (sumM*sumxyM-sumxM*sumyM)/detM;
+ posM = (sum2xM*sumyM-sumxM*sumxyM)/detM; // at xm
+ }
+ //
+
+ if (ncl>15){
+ TTreeSRedirector& cstream = *fDebugStreamer;
+ cstream<<"Seeds"<<
+ "Ncl="<<ncl<<
+ "SumM="<<sumM<<
+ "x1="<<x1<<
+ "x2="<<x2<<
+ "Cl1.="<<cl1<<
+ "Cl2.="<<cl2<<
+ "Phi="<<tanphi<<
+ "Theta="<<tantheta<<
+ "Pos1="<<pos1<<
+ "Pos2="<<pos2<<
+ "PosM="<<posM<<
+ "Angle1="<<angle1<<
+ "Angle2="<<angle2<<
+ "AngleM="<<angleM<<
+ "\n";
+ }
+ }
+ }
+ }
+}
//_____________________________________________________________________________
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;
- }
+// 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);
//
// AliTRDtrackingSector Constructor
//
-
AliTRDpadPlane *padPlane = 0;
fGeom = geo;
}
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.;
+
+ // ymaxsensitive = (fPar->GetColPadSize(plane)*fPar->GetColMax(plane)-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 pad = fPar->GetRowPadSize(plane,ch,0);
Float_t row0 = fPar->GetRow0(plane,ch,0);
Int_t nPads = fPar->GetRowMax(plane,ch,0);
zmaxsensitive[ch] = Float_t(nPads)*pad/2.;
// zc[ch] = (pad * nPads)/2 + row0 - pad/2;
- zc[ch] = (pad * nPads)/2 + row0;
+ // zc[ch] = (pad * nPads)/2 + row0;
+ zc[ch] = -(pad * nPads)/2 + row0;
//zc[ch] = row0+zmax[ch]-AliTRDgeometry::RpadW();
}
- dx = fPar->GetDriftVelocity()
+ dx = fgkDriftCorrection*fPar->GetDriftVelocity()
/ fPar->GetSamplingFrequency();
rho = 0.00295 * 0.85; radLength = 11.0;
steps = (Int_t) (dxAmp/dx);
for(tb = 0; tb < steps; tb++) {
- x = x0 + tb * dx + dx/2;
+ x = x0 + tb * dx + dx/2+ fgkOffsetX;
tbIndex = CookTimeBinIndex(plane, -tb-1);
ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex);
ppl->SetYmax(ymax,ymaxsensitive);
InsertLayer(ppl);
// Drift region
- dx = fPar->GetDriftVelocity()
+
+ dx = fgkDriftCorrection*fPar->GetDriftVelocity()
/ fPar->GetSamplingFrequency();
steps = (Int_t) (dxDrift/dx);
for(tb = 0; tb < steps; tb++) {
- x = x0 - tb * dx - dx/2;
+ x = x0 - tb * dx - dx/2 + fgkOffsetX; //temporary fix - fix it the parameters
tbIndex = CookTimeBinIndex(plane, tb);
ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex);
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()
+
+ Double_t dx = fgkDriftCorrection*(Double_t) fPar->GetDriftVelocity()
/ fPar->GetSamplingFrequency();
Int_t tbAmp = fPar->GetTimeBefore();
return m;
}
+
+
+
+
//______________________________________________________
void AliTRDtracker::AliTRDpropagationLayer::SetZ(Double_t* center, Double_t *w, Double_t *wsensitive )
{
-void AliTRDtracker::AliTRDpropagationLayer::GetPropagationParameters(
+Bool_t AliTRDtracker::AliTRDpropagationLayer::GetPropagationParameters(
Double_t y, Double_t z, Double_t &dx, Double_t &rho, Double_t &radLength,
Bool_t &lookForCluster) const
{
radLength = 36.66;
}
}else{
- rho = 2.7; radLength = 24.01; //aluminium in between
+ cross = kTRUE; rho = 2.7; radLength = 24.01; //aluminium in between
}
}
//
- if (fTimeBinIndex>=0) return;
+ if (fTimeBinIndex>=0) return cross;
//
//
// check hole
- if (fHole==kFALSE) return;
+ if (fHole==kFALSE) return cross;
//
for(Int_t ch = 0; ch < (Int_t) kZones; ch++) {
if (TMath::Abs(z - fZc[ch]) < fZmax[ch]){
}
}
}
- return;
+ return cross;
}
Int_t AliTRDtracker::AliTRDpropagationLayer::GetZone( Double_t z) const
return m;
}
+Int_t AliTRDtracker::AliTRDpropagationLayer::FindNearestCluster(Double_t y, Double_t z, Double_t maxroad) const
+{
+ //
+ // Returns index of the cluster nearest to the given y,z
+ //
+ Int_t index = -1;
+ Int_t maxn = fN;
+ Double_t mindist = maxroad;
+ Float_t padlength =-1;
+ //
+ for (Int_t i=Find(y-maxroad); i<maxn; i++) {
+ AliTRDcluster* c=(AliTRDcluster*)(fClusters[i]);
+ if (padlength<0){
+ padlength = TMath::Sqrt(c->GetSigmaZ2()*12);
+ }
+ //
+ if (c->GetY() > y+maxroad) break;
+ if((c->GetZ()-z)*(c->GetZ()-z) > padlength*0.75) continue;
+ if (TMath::Abs(c->GetY()-y)<mindist){
+ mindist = TMath::Abs(c->GetY()-y);
+ index = GetIndex(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());
+ //Double_t h01 = sin(TMath::Pi() / 180.0 * fPar->GetTiltingAngle());
Int_t det = c->GetDetector();
Int_t plane = fGeom->GetPlane(det);
} // 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
+ //
+ //
+ TClonesArray array0("AliTRDcluster",1);
+ TClonesArray array1("AliTRDcluster",1);
+ 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(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 (cl[0][it]||cl[1][it]) nfound++;
+ //
+ 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;
+ }
+ 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};
- //
- //
- 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;
- //
- // how many changes ++ mean z ++mean y ++ sigma y
- for (Int_t it=t0;it<t1;it++){
+ 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) 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;
- 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]++;
+ Float_t poscor = fgkCoef*(cl[ih][it]->GetLocalTimeBin() - fgkMean)+fgkOffset;
+ dz[ih][it] = cl[ih][it]->GetZ()- zt[it]; // calculate distance from track in z
+ dy[ih][it] = cl[ih][it]->GetY()+ dz[ih][it]*h01 - poscor -yt[it]; // 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;
}
- 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];
+ }
+ //
+ // iterative choosing of "best path"
+ //
+ //
+ Int_t label = TMath::Abs(track->GetLabel());
+ Int_t bestiter=0;
+ //
+ for (Int_t iter=0;iter<9;iter++){
+ //
+ 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;
+ }
+ }
+ 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]++;
}
}
- if (sumall[ih]>4){
- meanz[ih] = sumz/sum;
- meany[ih] = sumdy/sum;
- sigmay[ih] = TMath::Sqrt(sumdy2/sum-meany[ih]*meany[ih]);
+ //
+ // 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++;
}
- }
- 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
+ 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->fCyy;
+ Double_t weighty = (moffset[iter]/sigmatr2)/sweight; // weighted mean
+ Double_t sigmacl = TMath::Sqrt(sigma1*sigma1+track->fCyy); //
+ 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;
}
- */
- 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 (quality0>quality1){
- best = 1;
- }
-
-
- //
- 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];
//
- if (TMath::Abs(dy[it])<2.5*sigmay[best])
- clusters[it] = indexes[best][it];
- }
+ // update best hypothesy if better chi2 according tracklet position and angle
+ //
+ Double_t sy2 = smean[iter] + track->fCyy;
+ 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
- if (nbad[0]>4){
- nbad[0] = nfound;
+ 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
+ //if (tchi2s[bestiter]>25.) sigma2*=tchi2s[bestiter]/25.;
+ //if (tchi2s[bestiter]>25.) sigma2=1000.; // dont'accept
+
+ 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-fgkExB)*(tany-fgkExB))*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;
+ Float_t poscor = fgkCoef*(cl[best[bestiter][it]][it]->GetLocalTimeBin() - fgkMean)+fgkOffset;
+ 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()-poscor); // ExB corrction correction
+ cl[best[bestiter][it]][it]->Use();
+ }
+ clusters[it+t0] = indexes[best[bestiter][it]][it];
+ }
+ //
+ // 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-fgkExB)*(tany-fgkExB);
+ //
+ 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]);
+ track->fTracklets[plane] = tracklet;
+ track->fNWrong+=nbad[0];
+ //
+ // Debuging part
+ //
+ 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);
+ }
}
+ 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
+ //
+ "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;
}
-
-
-
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff