//-----------------------------------------------------------------
// Implementation of the TPC track class
-// This class is used by the AliTPCtracker class
+// This class is used by the AliTPCtrackerMI class
// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
//-----------------------------------------------------------------
#include "AliCluster.h"
#include "AliTracker.h"
#include "AliESDtrack.h"
-
+#include "AliESDVertex.h"
+#include "TTreeStream.h"
+#include "AliTPCRecoParam.h"
+#include "AliTPCReconstructor.h"
ClassImp(AliTPCtrack)
//_________________________________________________________________________
}
//_____________________________________________________________________________
-AliTPCtrack::AliTPCtrack(const AliESDtrack& t) :
+AliTPCtrack::AliTPCtrack(const AliESDtrack& t, TTreeSRedirector *pcstream) :
AliKalmanTrack(),
fdEdx(t.GetTPCsignal()),
fSdEdx(1e10),
//-----------------------------------------------------------------
// Conversion AliESDtrack -> AliTPCtrack.
//-----------------------------------------------------------------
+ const Double_t kmaxC[4]={10,10,0.1,0.1}; // cuts on the rms /fP0,fP1,fP2,fP3
SetNumberOfClusters(t.GetTPCclusters(fIndex));
SetLabel(t.GetLabel());
SetMass(t.GetMass());
for (Int_t i=0; i<12;i++) fKinkPoint[i]=0.;
for (Int_t i=0; i<3;i++) fKinkIndexes[i]=0;
for (Int_t i=0; i<3;i++) fV0Indexes[i]=0;
+ //
+ // choose parameters to start
+ //
+ const AliTPCRecoParam * recoParam = AliTPCReconstructor::GetRecoParam();
+ Int_t reject=0;
+ AliExternalTrackParam param(t);
+
+ const AliExternalTrackParam *tpcout=(t.GetFriendTrack())? ((AliESDfriendTrack*)(t.GetFriendTrack()))->GetTPCOut():0;
+ const AliExternalTrackParam *tpcin = t.GetInnerParam();
+ const AliExternalTrackParam *tpc=(tpcout)?tpcout:tpcin;
+ if (!tpc) tpc=¶m;
+ Bool_t isOK=recoParam->GetUseOuterDetectors();
+ if (param.GetCovariance()[0]>kmaxC[0]*kmaxC[0]) isOK=kFALSE;
+ if (param.GetCovariance()[2]>kmaxC[1]*kmaxC[1]) isOK=kFALSE;
+ if (param.GetCovariance()[5]>kmaxC[2]*kmaxC[2]) isOK=kFALSE;
+ if (param.GetCovariance()[9]>kmaxC[3]*kmaxC[3]) isOK=kFALSE;
+ param.Rotate(tpc->GetAlpha());
+ Double_t oldX=param.GetX(), oldY=param.GetY(), oldZ=param.GetZ();
+ if (!isOK ){
+ param=*tpc;
+ isOK=kTRUE;
+ reject=1;
+ }
+ isOK=AliTracker::PropagateTrackToBxByBz(¶m,tpc->GetX(),t.GetMass(),2.,kFALSE);
+ if (param.GetCovariance()[0]>kmaxC[0]*kmaxC[0]) isOK=kFALSE;
+ if (param.GetCovariance()[2]>kmaxC[1]*kmaxC[1]) isOK=kFALSE;
+ if (param.GetCovariance()[5]>kmaxC[2]*kmaxC[2]) isOK=kFALSE;
+ if (param.GetCovariance()[9]>kmaxC[3]*kmaxC[3]) isOK=kFALSE;
+ if (!isOK){
+ param=*tpc;
+ isOK=kTRUE;
+ reject=2;
+ }
+ if (reject>0){
+ param.ResetCovariance(4.); // reset covariance if start from backup param
+ }
+ //
+ //
+ if (pcstream){
+ AliExternalTrackParam dummy;
+ AliExternalTrackParam *ptpc=(AliExternalTrackParam *)tpc;
+ // if (!ptpc) ptpc=&dummy;
+ AliESDtrack *esd= (AliESDtrack *)&t;
+ (*pcstream)<<"trackP"<<
+ "reject="<<reject<< // flag - rejection of current esd track parameters
+ "esd.="<<esd<< // original esd track
+ "tr.="<<¶m<< // starting track parameters
+ "out.="<<ptpc<< // backup tpc parameters
+ "\n";
+ }
- Set(t.GetX(),t.GetAlpha(),t.GetParameter(),t.GetCovariance());
+ Set(param.GetX(),param.GetAlpha(),param.GetParameter(),param.GetCovariance());
if ((t.GetStatus()&AliESDtrack::kTIME) == 0) return;
StartTimeIntegral();
Double_t times[10]; t.GetIntegratedTimes(times); SetIntegratedTimes(times);
SetIntegratedLength(t.GetIntegratedLength());
+
+ if (GetX()>oldX) {
+ Double_t dX=GetX()-oldX, dY=GetY()-oldY, dZ=GetZ()-oldZ;
+ Double_t d=TMath::Sqrt(dX*dX + dY*dY + dZ*dZ);
+ AddTimeStep(d);
+ }
}
//_____________________________________________________________________________
for (Int_t i=0; i<3;i++) fV0Indexes[i]=t.fV0Indexes[i];
}
+AliTPCtrack& AliTPCtrack::operator=(const AliTPCtrack& o){
+ if(this!=&o){
+ AliKalmanTrack::operator=(o);
+ fdEdx = o.fdEdx;
+ for(Int_t i = 0;i<kMaxRow;++i)fIndex[i] = o.fIndex[i];
+ for(Int_t i = 0;i<4;++i)fPoints[i] = o.fPoints[i];
+ fSdEdx = o.fSdEdx;
+ fNFoundable = o.fNFoundable;
+ fBConstrain = o.fBConstrain;
+ fLastPoint = o.fLastPoint;
+ fFirstPoint = o.fFirstPoint;
+ fTrackType = o.fTrackType;
+ fLab2 = o.fLab2;
+ fNShared = o.fNShared;
+ fReference = o.fReference;
+ for(Int_t i = 0;i<12;++i) fKinkPoint[i] = o.fKinkPoint[i];
+
+ for(Int_t i = 0;i<3;++i){
+ fKinkIndexes[i] = o.fKinkIndexes[i];
+ fV0Indexes[i] = o.fV0Indexes[i];
+ }
+ }
+ return *this;
+
+}
+
+
//_____________________________________________________________________________
Int_t AliTPCtrack::Compare(const TObject *o) const {
//-----------------------------------------------------------------
// This function compares tracks according to the their curvature
//-----------------------------------------------------------------
AliTPCtrack *t=(AliTPCtrack*)o;
- //Double_t co=TMath::Abs(t->Get1Pt());
- //Double_t c =TMath::Abs(Get1Pt());
+ //Double_t co=t->OneOverPt();
+ //Double_t c = OneOverPt();
Double_t co=t->GetSigmaY2()*t->GetSigmaZ2();
Double_t c =GetSigmaY2()*GetSigmaZ2();
if (c>co) return 1;
// rho - density of the crossed matrial (g/cm^3)
// x0 - radiation length of the crossed material (g/cm^2)
//-----------------------------------------------------------------
- Double_t oldX=GetX(), oldY=GetY(), oldZ=GetZ();
-
+ //
Double_t bz=GetBz();
- if (!AliExternalTrackParam::PropagateTo(xk,bz)) return kFALSE;
+ Double_t zat=0;
+ if (!GetZAt(xk, bz,zat)) return kFALSE;
+ if (TMath::Abs(zat)>250.){
+ // Don't propagate track outside of the fiducial volume - material budget not proper one
+ //
+ //AliWarning("Propagate outside of fiducial volume");
+ return kFALSE;
+ }
+
+ Double_t oldX=GetX(), oldY=GetY(), oldZ=GetZ();
+ //if (!AliExternalTrackParam::PropagateTo(xk,bz)) return kFALSE;
+ Double_t b[3]; GetBxByBz(b);
+ if (!AliExternalTrackParam::PropagateToBxByBz(xk,b)) return kFALSE;
Double_t d = TMath::Sqrt((GetX()-oldX)*(GetX()-oldX) +
(GetY()-oldY)*(GetY()-oldY) +
if (IsStartedTimeIntegral() && GetX()>oldX) AddTimeStep(d);
if (oldX < xk) d = -d;
- if (!AliExternalTrackParam::CorrectForMaterial(d*rho/x0,x0,GetMass()))
- return kFALSE;
+ if (!AliExternalTrackParam::CorrectForMeanMaterial(d*rho/x0,d*rho,GetMass(),
+ kFALSE,AliExternalTrackParam::BetheBlochGas)) return kFALSE;
return kTRUE;
}
//_____________________________________________________________________________
Bool_t
-AliTPCtrack::PropagateToVertex(const AliESDVertex *v,Double_t d,Double_t x0)
+AliTPCtrack::PropagateToVertex(const AliESDVertex *v,Double_t rho,Double_t x0)
{
//-----------------------------------------------------------------
- // This function propagates tracks to the vertex.
+ // This function propagates tracks to the vertex
+ // rho - density of the crossed matrial (g/cm3)
+ // x0 - radiation length of the crossed material (g/cm2)
//-----------------------------------------------------------------
- Double_t bz=GetBz();
- if (PropagateToDCA(v,bz,kVeryBig))
- if (AliExternalTrackParam::CorrectForMaterial(d,x0,GetMass())) return kTRUE;
- return kFALSE;
+ Double_t oldX=GetX(), oldY=GetY(), oldZ=GetZ();
+
+ //Double_t bz=GetBz();
+ //if (!PropagateToDCA(v,bz,kVeryBig)) return kFALSE;
+ Double_t b[3]; GetBxByBz(b);
+ if (!PropagateToDCABxByBz(v,b,kVeryBig)) return kFALSE;
+
+ Double_t d = TMath::Sqrt((GetX()-oldX)*(GetX()-oldX) +
+ (GetY()-oldY)*(GetY()-oldY) +
+ (GetZ()-oldZ)*(GetZ()-oldZ));
+
+ if (oldX < GetX()) d = -d;
+ if (!AliExternalTrackParam::CorrectForMeanMaterial(d*rho/x0,d*rho,GetMass(),
+ kFALSE,AliExternalTrackParam::BetheBlochGas)) return kFALSE;
+
+ return kTRUE;
}
//_____________________________________________________________________________
if (!AliExternalTrackParam::Update(p,cov)) return kFALSE;
+ AliTracker::FillResiduals(this,p,cov,c->GetVolumeId());
+
Int_t n=GetNumberOfClusters();
fIndex[n]=index;
SetNumberOfClusters(n+1);
//
}
-Double_t AliTPCtrack::GetBz() const {
- //
- // returns Bz component of the magnetic field (kG)
- //
- if (AliTracker::UniformField()) return AliTracker::GetBz();
- Double_t r[3]; GetXYZ(r);
- return AliTracker::GetBz(r);
-}
-
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff