Int_t idx=GetClusterIndex(n); // save the current cluster index
AliCluster cl(*c); cl.SetSigmaY2(fErrorY2); cl.SetSigmaZ2(fErrorZ2);
+ Float_t dx = ((AliTPCclusterMI*)c)->GetX()-GetX();
+ if (TMath::Abs(dx)>0){
+ Float_t ty = TMath::Tan(TMath::ASin(GetSnp()));
+ Float_t dy = dx*ty;
+ Float_t dz = dx*TMath::Sqrt(1.+ty*ty)*GetTgl();
+ cl.SetY(c->GetY()-dy);
+ cl.SetZ(c->GetZ()-dz);
+ }
+
if (!AliTPCtrack::Update(&cl,chisq,index)) return kFALSE;
if (fCMeanSigmaY2p30<0){
Float_t gainGG = 1;
if (AliTPCcalibDB::Instance()->GetParameters()){
- gainGG= 20000./AliTPCcalibDB::Instance()->GetParameters()->GetGasGain(); //relative gas gain
+ gainGG= AliTPCcalibDB::Instance()->GetParameters()->GetGasGain()/20000.; //relative gas gain
}
for (Int_t of =0; of<4; of++){
for (Int_t i=of+i1;i<i2;i+=4)
{
- Int_t index = fIndex[i];
- if (index<0||index&0x8000) continue;
+ Int_t clindex = fIndex[i];
+ if (clindex<0||clindex&0x8000) continue;
//AliTPCTrackPoint * point = (AliTPCTrackPoint *) arr.At(i);
AliTPCTrackerPoint * point = GetTrackPoint(i);
continue;
}
if (rsigma>1.5) ampc/=1.3; // if big backround
- amp[nc[of]] /=gainGG;
amp[nc[of]] = ampc;
+ amp[nc[of]] /=gainGG;
angular[nc[of]] = TMath::Sqrt(1.+angley*angley+anglez*anglez);
weight[nc[of]] = w;
nc[of]++;
Float_t mean = (meanc>0)? means/meanc:0;
return mean;
}
+
+
+
+Int_t AliTPCseed::RefitTrack(AliTPCseed *seed, AliExternalTrackParam * parin, AliExternalTrackParam * parout){
+ //
+ // Refit the track
+ // return value - number of used clusters
+ //
+ //
+ const Int_t kMinNcl =10;
+ AliTPCseed *track=new AliTPCseed(*seed);
+ Int_t sector=-1;
+ // reset covariance
+ //
+ Double_t covar[15];
+ for (Int_t i=0;i<15;i++) covar[i]=0;
+ covar[0]=10.*10.;
+ covar[2]=10.*10.;
+ covar[5]=10.*10./(64.*64.);
+ covar[9]=10.*10./(64.*64.);
+ covar[14]=1*1;
+ //
+
+ Float_t xmin=1000, xmax=-10000;
+ Int_t imin=158, imax=0;
+ for (Int_t i=0;i<160;i++) {
+ AliTPCclusterMI *c=track->GetClusterPointer(i);
+ if (!c) continue;
+ if (sector<0) sector = c->GetDetector();
+ if (c->GetX()<xmin) xmin=c->GetX();
+ if (c->GetX()>xmax) xmax=c->GetX();
+ if (i<imin) imin=i;
+ if (i>imax) imax=i;
+ }
+ if(imax-imin<kMinNcl) {
+ delete track;
+ return 0 ;
+ }
+ // Not succes to rotate
+ if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
+ delete track;
+ return 0;
+ }
+ //
+ //
+ // fit from inner to outer row
+ //
+ AliExternalTrackParam paramIn;
+ AliExternalTrackParam paramOut;
+ Bool_t isOK=kTRUE;
+ Int_t ncl=0;
+ //
+ //
+ //
+ for (Int_t i=imin; i<=imax; i++){
+ AliTPCclusterMI *c=track->GetClusterPointer(i);
+ if (!c) continue;
+ // if (RejectCluster(c,track)) continue;
+ sector = (c->GetDetector()%18);
+ if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
+ //continue;
+ }
+ Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
+ Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
+ if (!track->PropagateTo(r[0])) {
+ isOK=kFALSE;
+ }
+ if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
+ }
+ if (!isOK) { delete track; return 0;}
+ track->AddCovariance(covar);
+ //
+ //
+ //
+ for (Int_t i=imax; i>=imin; i--){
+ AliTPCclusterMI *c=track->GetClusterPointer(i);
+ if (!c) continue;
+ //if (RejectCluster(c,track)) continue;
+ sector = (c->GetDetector()%18);
+ if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
+ //continue;
+ }
+ Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
+ Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
+ if (!track->PropagateTo(r[0])) {
+ isOK=kFALSE;
+ }
+ if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
+ }
+ //if (!isOK) { delete track; return 0;}
+ paramIn = *track;
+ track->AddCovariance(covar);
+ //
+ //
+ for (Int_t i=imin; i<=imax; i++){
+ AliTPCclusterMI *c=track->GetClusterPointer(i);
+ if (!c) continue;
+ sector = (c->GetDetector()%18);
+ if (!track->Rotate(TMath::DegToRad()*(sector%18*20.+10.)-track->GetAlpha())) {
+ //continue;
+ }
+ ncl++;
+ //if (RejectCluster(c,track)) continue;
+ Double_t r[3]={c->GetX(),c->GetY(),c->GetZ()};
+ Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
+ if (!track->PropagateTo(r[0])) {
+ isOK=kFALSE;
+ }
+ if ( !((static_cast<AliExternalTrackParam*>(track)->Update(&r[1],cov)))) isOK=kFALSE;
+ }
+ //if (!isOK) { delete track; return 0;}
+ paramOut=*track;
+ //
+ //
+ //
+ if (parin) (*parin)=paramIn;
+ if (parout) (*parout)=paramOut;
+ return ncl;
+}
+
+
+
+Bool_t AliTPCseed::RefitTrack(AliTPCseed* /*seed*/, Bool_t /*out*/){
+ //
+ //
+ //
+ return kFALSE;
+}
+
+
+
+
+
+
+void AliTPCseed::GetError(AliTPCclusterMI* cluster, AliExternalTrackParam * param,
+ Double_t& erry, Double_t &errz)
+{
+ //
+ // Get cluster error at given position
+ //
+ AliTPCClusterParam *clusterParam = AliTPCcalibDB::Instance()->GetClusterParam();
+ Double_t tany,tanz;
+ Double_t snp1=param->GetSnp();
+ tany=snp1/TMath::Sqrt(1.-snp1*snp1);
+ //
+ Double_t tgl1=param->GetTgl();
+ tanz=tgl1/TMath::Sqrt(1.-snp1*snp1);
+ //
+ Int_t padSize = 0; // short pads
+ if (cluster->GetDetector() >= 36) {
+ padSize = 1; // medium pads
+ if (cluster->GetRow() > 63) padSize = 2; // long pads
+ }
+
+ erry = clusterParam->GetError0Par( 0, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tany) );
+ errz = clusterParam->GetError0Par( 1, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tanz) );
+}
+
+
+void AliTPCseed::GetShape(AliTPCclusterMI* cluster, AliExternalTrackParam * param,
+ Double_t& rmsy, Double_t &rmsz)
+{
+ //
+ // Get cluster error at given position
+ //
+ AliTPCClusterParam *clusterParam = AliTPCcalibDB::Instance()->GetClusterParam();
+ Double_t tany,tanz;
+ Double_t snp1=param->GetSnp();
+ tany=snp1/TMath::Sqrt(1.-snp1*snp1);
+ //
+ Double_t tgl1=param->GetTgl();
+ tanz=tgl1/TMath::Sqrt(1.-snp1*snp1);
+ //
+ Int_t padSize = 0; // short pads
+ if (cluster->GetDetector() >= 36) {
+ padSize = 1; // medium pads
+ if (cluster->GetRow() > 63) padSize = 2; // long pads
+ }
+
+ rmsy = clusterParam->GetRMSQ( 0, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tany), TMath::Abs(cluster->GetMax()) );
+ rmsz = clusterParam->GetRMSQ( 1, padSize, (250.0 - TMath::Abs(cluster->GetZ())), TMath::Abs(tanz) ,TMath::Abs(cluster->GetMax()));
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff