// //
///////////////////////////////////////////////////////////////////////////////
-AliTRDtrack::AliTRDtrack():
- AliKalmanTrack(),
- fSeedLab(-1),
- fdEdx(0),
- fdEdxT(0),
- fDE(0),
- fAlpha(0),
- fX(0),
- fStopped(kFALSE),
- fY(0),
- fZ(0),
- fE(0),
- fT(0),
- fC(0),
- fCyy(1e10),
- fCzy(0),
- fCzz(1e10),
- fCey(0),
- fCez(0),
- fCee(1e10),
- fCty(0),
- fCtz(0),
- fCte(0),
- fCtt(1e10),
- fCcy(0),
- fCcz(0),
- fCce(0),
- fCct(0),
- fCcc(1e10),
- fLhElectron(0),
- fNWrong(0),
- fNRotate(0),
- fNCross(0),
- fNExpected(0),
- fNLast(0),
- fNExpectedLast(0),
- fNdedx(0),
- fChi2Last(1e10),
- fBackupTrack(0x0)
-
+//_____________________________________________________________________________
+AliTRDtrack::AliTRDtrack()
+ :AliKalmanTrack()
+ ,fSeedLab(-1)
+ ,fdEdx(0)
+ ,fdEdxT(0)
+ ,fDE(0)
+ ,fAlpha(0)
+ ,fX(0)
+ ,fStopped(kFALSE)
+ ,fY(0)
+ ,fZ(0)
+ ,fE(0)
+ ,fT(0)
+ ,fC(0)
+ ,fCyy(1e10)
+ ,fCzy(0)
+ ,fCzz(1e10)
+ ,fCey(0)
+ ,fCez(0)
+ ,fCee(1e10)
+ ,fCty(0)
+ ,fCtz(0)
+ ,fCte(0)
+ ,fCtt(1e10)
+ ,fCcy(0)
+ ,fCcz(0)
+ ,fCce(0)
+ ,fCct(0)
+ ,fCcc(1e10)
+ ,fLhElectron(0)
+ ,fNWrong(0)
+ ,fNRotate(0)
+ ,fNCross(0)
+ ,fNExpected(0)
+ ,fNLast(0)
+ ,fNExpectedLast(0)
+ ,fNdedx(0)
+ ,fChi2Last(1e10)
+ ,fBackupTrack(0x0)
{
- for (Int_t i=0; i<kNplane; i++) {
- for (Int_t j=0; j<kNslice; j++) {
+ //
+ // AliTRDtrack default constructor
+ //
+
+ Int_t i = 0;
+ Int_t j = 0;
+ UInt_t k = 0;
+
+ for (i = 0; i < kNplane; i++) {
+ for (j = 0; j < kNslice; j++) {
fdEdxPlane[i][j] = 0;
}
fTimBinPlane[i] = -1;
}
- for (UInt_t i=0; i<kMAXCLUSTERSPERTRACK; i++) {
- fIndex[i] = 0;
- fIndexBackup[i] = 0;
- fdQdl[i] = 0;
+
+ for (k = 0; k < kMAXCLUSTERSPERTRACK; k++) {
+ fIndex[k] = 0;
+ fIndexBackup[k] = 0;
+ fdQdl[k] = 0;
+ }
+
+ for (i = 0; i < 3; i++) {
+ fBudget[i] = 0;
}
- for (Int_t i=0; i<3; i++) fBudget[i] = 0;
+
}
//_____________________________________________________________________________
AliTRDtrack::AliTRDtrack(const AliTRDcluster *c, UInt_t index,
const Double_t xx[5], const Double_t cc[15],
- Double_t xref, Double_t alpha) : AliKalmanTrack() {
- //-----------------------------------------------------------------
- // This is the main track constructor.
- //-----------------------------------------------------------------
-
- fSeedLab = -1;
-
- fAlpha=alpha;
- if (fAlpha<-TMath::Pi()) fAlpha += 2*TMath::Pi();
- if (fAlpha>=TMath::Pi()) fAlpha -= 2*TMath::Pi();
+ Double_t xref, Double_t alpha)
+ :AliKalmanTrack()
+ ,fSeedLab(-1)
+ ,fdEdx(0.0)
+ ,fdEdxT(0.0)
+ ,fDE(0.0)
+ ,fAlpha(alpha)
+ ,fX(xref)
+ ,fStopped(kFALSE)
+ ,fY(xx[0])
+ ,fZ(xx[1])
+ ,fE(xx[2])
+ ,fT(xx[3])
+ ,fC(xx[4])
+ ,fCyy(cc[0])
+ ,fCzy(cc[1])
+ ,fCzz(cc[2])
+ ,fCey(cc[3])
+ ,fCez(cc[4])
+ ,fCee(cc[5])
+ ,fCty(cc[6])
+ ,fCtz(cc[7])
+ ,fCte(cc[8])
+ ,fCtt(cc[9])
+ ,fCcy(cc[10])
+ ,fCcz(cc[11])
+ ,fCce(cc[12])
+ ,fCct(cc[13])
+ ,fCcc(cc[14])
+ ,fLhElectron(0.0)
+ ,fNWrong(0)
+ ,fNRotate(0)
+ ,fNCross(0)
+ ,fNExpected(0)
+ ,fNLast(0)
+ ,fNExpectedLast(0)
+ ,fNdedx(0)
+ ,fChi2Last(1e10)
+ ,fBackupTrack(0x0)
+{
+ //
+ // AliTRDtrack main constructor
+ //
- fX=xref;
+ Int_t i = 0;
+ Int_t j = 0;
+ UInt_t k = 0;
- fY=xx[0]; fZ=xx[1]; fE=xx[2]; fT=xx[3]; fC=xx[4];
+ if (fAlpha < -TMath::Pi()) fAlpha += 2.0 * TMath::Pi();
+ if (fAlpha >= TMath::Pi()) fAlpha -= 2.0 * TMath::Pi();
SaveLocalConvConst();
- fCyy=cc[0];
- fCzy=cc[1]; fCzz=cc[2];
- fCey=cc[3]; fCez=cc[4]; fCee=cc[5];
- fCty=cc[6]; fCtz=cc[7]; fCte=cc[8]; fCtt=cc[9];
- fCcy=cc[10]; fCcz=cc[11]; fCce=cc[12]; fCct=cc[13]; fCcc=cc[14];
-
- fIndex[0]=index;
+ fIndex[0] = index;
SetNumberOfClusters(1);
- fdEdx=0.;
- fdEdxT=0.;
- fDE=0.;
- for (Int_t i=0;i<kNplane;i++){
- for (Int_t j=0; j<kNslice; j++) {
+ for (i = 0; i < kNplane; i++) {
+ for (j = 0; j < kNslice; j++) {
fdEdxPlane[i][j] = 0;
}
fTimBinPlane[i] = -1;
}
- fLhElectron = 0.0;
- fNWrong = 0;
- fNRotate = 0;
- fStopped = 0;
- fNCross =0;
- fNLast =0;
- fChi2Last=0;
- fNExpected=0;
- fNExpectedLast=0;
- fNdedx=0;
Double_t q = TMath::Abs(c->GetQ());
- Double_t s = fX*fC - fE, t=fT;
- if(s*s < 1) q *= TMath::Sqrt((1-s*s)/(1+t*t));
-
+ Double_t s = fX * fC - fE;
+ Double_t t = fT;
+ if (s*s < 1.0) {
+ q *= TMath::Sqrt((1-s*s)/(1+t*t));
+ }
fdQdl[0] = q;
- // initialisation [SR, GSI 18.02.2003] (i startd for 1)
- for(UInt_t i=1; i<kMAXCLUSTERSPERTRACK; i++) {
- fdQdl[i] = 0;
- fIndex[i] = 0;
- fIndexBackup[i] = 0; //backup indexes MI
+ for (k = 1; k < kMAXCLUSTERSPERTRACK; k++) {
+ fdQdl[k] = 0;
+ fIndex[k] = 0;
+ fIndexBackup[k] = 0;
}
- for (Int_t i=0;i<3;i++) { fBudget[i]=0;};
- fBackupTrack = 0;
+ for (i = 0; i < 3; i++) {
+ fBudget[i] = 0;
+ }
}
//_____________________________________________________________________________
-AliTRDtrack::AliTRDtrack(const AliTRDtrack& t) : AliKalmanTrack(t)
+AliTRDtrack::AliTRDtrack(const AliTRDtrack &t)
+ :AliKalmanTrack(t)
+ ,fSeedLab(t.fSeedLab)
+ ,fdEdx(t.fdEdx)
+ ,fdEdxT(t.fdEdxT)
+ ,fDE(t.fDE)
+ ,fAlpha(t.fAlpha)
+ ,fX(t.fX)
+ ,fStopped(t.fStopped)
+ ,fY(t.fY)
+ ,fZ(t.fZ)
+ ,fE(t.fE)
+ ,fT(t.fT)
+ ,fC(t.fC)
+ ,fCyy(t.fCyy)
+ ,fCzy(t.fCzy)
+ ,fCzz(t.fCzz)
+ ,fCey(t.fCey)
+ ,fCez(t.fCez)
+ ,fCee(t.fCee)
+ ,fCty(t.fCty)
+ ,fCtz(t.fCtz)
+ ,fCte(t.fCte)
+ ,fCtt(t.fCtt)
+ ,fCcy(t.fCcy)
+ ,fCcz(t.fCcz)
+ ,fCce(t.fCce)
+ ,fCct(t.fCct)
+ ,fCcc(t.fCcc)
+ ,fLhElectron(0.0)
+ ,fNWrong(t.fNWrong)
+ ,fNRotate(t.fNRotate)
+ ,fNCross(t.fNCross)
+ ,fNExpected(t.fNExpected)
+ ,fNLast(t.fNLast)
+ ,fNExpectedLast(t.fNExpectedLast)
+ ,fNdedx(t.fNdedx)
+ ,fChi2Last(t.fChi2Last)
+ ,fBackupTrack(0x0)
{
//
// Copy constructor.
//
-
- SetLabel(t.GetLabel());
- fSeedLab=t.GetSeedLabel();
-
- SetChi2(t.GetChi2());
- fdEdx=t.fdEdx;
- fdEdxT=t.fdEdxT;
- fDE=t.fDE;
- for (Int_t i=0;i<kNplane;i++){
- for (Int_t j=0; j<kNslice; j++) {
+
+ Int_t i = 0;
+ Int_t j = 0;
+ UInt_t k = 0;
+
+ for (i = 0; i < kNplane; i++) {
+ for (j = 0; j < kNslice; j++) {
fdEdxPlane[i][j] = t.fdEdxPlane[i][j];
}
fTimBinPlane[i] = t.fTimBinPlane[i];
fTracklets[i] = t.fTracklets[i];
}
- fLhElectron = 0.0;
- fNWrong = t.fNWrong;
- fNRotate = t.fNRotate;
- fStopped = t.fStopped;
- fNCross = t.fNCross;
- fNExpected = t.fNExpected;
- fNExpectedLast = t.fNExpectedLast;
- fNdedx = t.fNdedx;
- fNLast = t.fNLast;
- fChi2Last = t.fChi2Last;
- fBackupTrack =0;
- fAlpha=t.fAlpha;
- fX=t.fX;
-
-
- fY=t.fY; fZ=t.fZ; fE=t.fE; fT=t.fT; fC=t.fC;
-
- fCyy=t.fCyy;
- fCzy=t.fCzy; fCzz=t.fCzz;
- fCey=t.fCey; fCez=t.fCez; fCee=t.fCee;
- fCty=t.fCty; fCtz=t.fCtz; fCte=t.fCte; fCtt=t.fCtt;
- fCcy=t.fCcy; fCcz=t.fCcz; fCce=t.fCce; fCct=t.fCct; fCcc=t.fCcc;
-
- Int_t n=t.GetNumberOfClusters();
- SetNumberOfClusters(n);
- for (Int_t i=0; i<n; i++) {
- fIndex[i]=t.fIndex[i];
- fIndexBackup[i]=t.fIndex[i]; // MI - backup indexes
- fdQdl[i]=t.fdQdl[i];
- }
-
- // initialisation (i starts from n) [SR, GSI, 18.02.2003]
- for(UInt_t i=n; i<kMAXCLUSTERSPERTRACK; i++) {
- fdQdl[i] = 0;
- fIndex[i] = 0;
- fIndexBackup[i] = 0; //MI backup indexes
- }
- for (Int_t i=0;i<6;i++){
+ Int_t n = t.GetNumberOfClusters();
+ for (i = 0; i < n; i++) {
+ fIndex[i] = t.fIndex[i];
+ fIndexBackup[i] = t.fIndex[i];
+ fdQdl[i] = t.fdQdl[i];
+ }
+ for (k = n; k < kMAXCLUSTERSPERTRACK; k++) {
+ fdQdl[k] = 0;
+ fIndex[k] = 0;
+ fIndexBackup[k] = 0;
+ }
+
+ for (i = 0; i < 6; i++) {
fTracklets[i] = t.fTracklets[i];
}
- for (Int_t i=0;i<3;i++) { fBudget[i]=t.fBudget[i];};
+
+ for (i = 0; i < 3; i++) {
+ fBudget[i] = t.fBudget[i];
+ }
+
}
//_____________________________________________________________________________
-AliTRDtrack::AliTRDtrack(const AliKalmanTrack& t, Double_t alpha)
- :AliKalmanTrack(t)
+AliTRDtrack::AliTRDtrack(const AliKalmanTrack &t, Double_t alpha)
+ :AliKalmanTrack(t)
+ ,fSeedLab(-1)
+ ,fdEdx(t.GetPIDsignal())
+ ,fdEdxT(0)
+ ,fDE(0)
+ ,fAlpha(alpha)
+ ,fX(0)
+ ,fStopped(kFALSE)
+ ,fY(0)
+ ,fZ(0)
+ ,fE(0)
+ ,fT(0)
+ ,fC(0)
+ ,fCyy(0)
+ ,fCzy(0)
+ ,fCzz(0)
+ ,fCey(0)
+ ,fCez(0)
+ ,fCee(0)
+ ,fCty(0)
+ ,fCtz(0)
+ ,fCte(0)
+ ,fCtt(0)
+ ,fCcy(0)
+ ,fCcz(0)
+ ,fCce(0)
+ ,fCct(0)
+ ,fCcc(0)
+ ,fLhElectron(0.0)
+ ,fNWrong(0)
+ ,fNRotate(0)
+ ,fNCross(0)
+ ,fNExpected(0)
+ ,fNLast(0)
+ ,fNExpectedLast(0)
+ ,fNdedx(0)
+ ,fChi2Last(0.0)
+ ,fBackupTrack(0x0)
{
//
// Constructor from AliTPCtrack or AliITStrack .
//
- SetLabel(t.GetLabel());
- SetChi2(0.);
- SetMass(t.GetMass());
+ Int_t i = 0;
+ Int_t j = 0;
+ UInt_t k = 0;
+
+ SetChi2(0.0);
SetNumberOfClusters(0);
- fdEdx=t.GetPIDsignal();
- fDE = 0;
- for (Int_t i=0;i<kNplane;i++){
- for (Int_t j=0;j<kNslice;j++){
+ for (i = 0; i < kNplane; i++) {
+ for (j = 0; j < kNslice; j++) {
fdEdxPlane[i][j] = 0.0;
}
fTimBinPlane[i] = -1;
}
- fLhElectron = 0.0;
- fNWrong = 0;
- fNRotate = 0;
- fStopped = 0;
- fNExpected=0;
- fNExpectedLast=0;
- fNdedx =0;
- fNCross =0;
- fNLast =0;
- fChi2Last =0;
- fBackupTrack =0;
-
- fAlpha = alpha;
- if (fAlpha < -TMath::Pi()) fAlpha += 2*TMath::Pi();
- else if (fAlpha >= TMath::Pi()) fAlpha -= 2*TMath::Pi();
-
- Double_t x, p[5]; t.GetExternalParameters(x,p);
-
- fX=x;
-
- fY=p[0];
- fZ=p[1];
- fT=p[3]; x=GetLocalConvConst();
- fC=p[4]/x;
- fE=fC*fX - p[2];
-
- //Conversion of the covariance matrix
- Double_t c[15]; t.GetExternalCovariance(c);
-
- c[10]/=x; c[11]/=x; c[12]/=x; c[13]/=x; c[14]/=x*x;
-
- Double_t c22=fX*fX*c[14] - 2*fX*c[12] + c[5];
- Double_t c32=fX*c[13] - c[8];
- Double_t c20=fX*c[10] - c[3], c21=fX*c[11] - c[4], c42=fX*c[14] - c[12];
-
- fCyy=c[0 ];
- fCzy=c[1 ]; fCzz=c[2 ];
- fCey=c20; fCez=c21; fCee=c22;
- fCty=c[6 ]; fCtz=c[7 ]; fCte=c32; fCtt=c[9 ];
- fCcy=c[10]; fCcz=c[11]; fCce=c42; fCct=c[13]; fCcc=c[14];
+ if (fAlpha < -TMath::Pi()) {
+ fAlpha += 2.0 * TMath::Pi();
+ }
+ else if (fAlpha >= TMath::Pi()) {
+ fAlpha -= 2.0 * TMath::Pi();
+ }
- // Initialization [SR, GSI, 18.02.2003]
- for(UInt_t i=0; i<kMAXCLUSTERSPERTRACK; i++) {
- fdQdl[i] = 0;
- fIndex[i] = 0;
- fIndexBackup[i] = 0; // MI backup indexes
+ Double_t x;
+ Double_t p[5];
+ t.GetExternalParameters(x,p);
+ fX = x;
+ fY = p[0];
+ fZ = p[1];
+ fT = p[3];
+ x = GetLocalConvConst();
+ fC = p[4] / x;
+ fE = fC * fX - p[2];
+
+ // Conversion of the covariance matrix
+ Double_t c[15];
+ t.GetExternalCovariance(c);
+ c[10] /= x;
+ c[11] /= x;
+ c[12] /= x;
+ c[13] /= x;
+ c[14] /= x*x;
+
+ Double_t c22 = fX*fX * c[14] - 2.0*fX*c[12] + c[ 5];
+ Double_t c32 = fX * c[13] - c[ 8];
+ Double_t c20 = fX * c[10] - c[ 3];
+ Double_t c21 = fX * c[11] - c[ 4];
+ Double_t c42 = fX * c[14] - c[12];
+
+ fCyy = c[ 0];
+ fCzy = c[ 1]; fCzz = c[ 2];
+ fCey = c20; fCez = c21; fCee = c22;
+ fCty = c[ 6]; fCtz = c[ 7]; fCte = c32; fCtt = c[ 9];
+ fCcy = c[10]; fCcz = c[11]; fCce = c42; fCct = c[13]; fCcc = c[14];
+
+ for (k = 0; k < kMAXCLUSTERSPERTRACK; k++) {
+ fdQdl[k] = 0;
+ fIndex[k] = 0;
+ fIndexBackup[k] = 0;
}
- for (Int_t i=0;i<3;i++) { fBudget[i]=0;};
+ for (i = 0; i < 3; i++) {
+ fBudget[i] = 0;
+ }
+
}
//_____________________________________________________________________________
-AliTRDtrack::AliTRDtrack(const AliESDtrack& t)
- :AliKalmanTrack()
+AliTRDtrack::AliTRDtrack(const AliESDtrack &t)
+ :AliKalmanTrack()
+ ,fSeedLab(-1)
+ ,fdEdx(t.GetTRDsignal())
+ ,fdEdxT(0)
+ ,fDE(0)
+ ,fAlpha(t.GetAlpha())
+ ,fX(0)
+ ,fStopped(kFALSE)
+ ,fY(0)
+ ,fZ(0)
+ ,fE(0)
+ ,fT(0)
+ ,fC(0)
+ ,fCyy(1e10)
+ ,fCzy(0)
+ ,fCzz(1e10)
+ ,fCey(0)
+ ,fCez(0)
+ ,fCee(1e10)
+ ,fCty(0)
+ ,fCtz(0)
+ ,fCte(0)
+ ,fCtt(1e10)
+ ,fCcy(0)
+ ,fCcz(0)
+ ,fCce(0)
+ ,fCct(0)
+ ,fCcc(1e10)
+ ,fLhElectron(0.0)
+ ,fNWrong(0)
+ ,fNRotate(0)
+ ,fNCross(0)
+ ,fNExpected(0)
+ ,fNLast(0)
+ ,fNExpectedLast(0)
+ ,fNdedx(0)
+ ,fChi2Last(0.0)
+ ,fBackupTrack(0x0)
{
//
// Constructor from AliESDtrack
//
+ Int_t i = 0;
+ Int_t j = 0;
+ UInt_t k = 0;
+
SetLabel(t.GetLabel());
SetChi2(0.);
SetMass(t.GetMass());
SetNumberOfClusters(t.GetTRDclusters(fIndex));
+
Int_t ncl = t.GetTRDclusters(fIndexBackup);
- for (UInt_t i=ncl;i<kMAXCLUSTERSPERTRACK;i++) {
- fIndexBackup[i]=0;
- fIndex[i] = 0; //MI store indexes
- }
- fdEdx=t.GetTRDsignal();
- fDE =0;
- for (Int_t i=0;i<kNplane;i++){
- for (Int_t j=0;j<kNslice;j++){
+ for (k = ncl; k < kMAXCLUSTERSPERTRACK; k++) {
+ fIndexBackup[k] = 0;
+ fIndex[k] = 0;
+ }
+
+ for (i = 0; i < kNplane; i++) {
+ for (j = 0; j < kNslice; j++) {
fdEdxPlane[i][j] = t.GetTRDsignals(i,j);
}
fTimBinPlane[i] = t.GetTRDTimBin(i);
}
- fLhElectron = 0.0;
- fNWrong = 0;
- fStopped = 0;
- fNRotate = 0;
- fNExpected =0;
- fNExpectedLast=0;
- fNdedx = 0;
- fNCross =0;
- fNLast =0;
- fChi2Last =0;
- fBackupTrack =0;
-
- fAlpha = t.GetAlpha();
- if (fAlpha < -TMath::Pi()) fAlpha += 2*TMath::Pi();
- else if (fAlpha >= TMath::Pi()) fAlpha -= 2*TMath::Pi();
+ if (fAlpha < -TMath::Pi()) {
+ fAlpha += 2.0 * TMath::Pi();
+ }
+ else if (fAlpha >= TMath::Pi()) {
+ fAlpha -= 2.0 * TMath::Pi();
+ }
- Double_t x, p[5]; t.GetExternalParameters(x,p);
- //Conversion of the covariance matrix
- Double_t c[15]; t.GetExternalCovariance(c);
- if (t.GetStatus()&AliESDtrack::kTRDbackup){
+ // Conversion of the covariance matrix
+ Double_t x;
+ Double_t p[5];
+ t.GetExternalParameters(x,p);
+ Double_t c[15];
+ t.GetExternalCovariance(c);
+ if (t.GetStatus() & AliESDtrack::kTRDbackup) {
t.GetOuterExternalParameters(fAlpha,x,p);
t.GetOuterExternalCovariance(c);
- if (fAlpha < -TMath::Pi()) fAlpha += 2*TMath::Pi();
- else if (fAlpha >= TMath::Pi()) fAlpha -= 2*TMath::Pi();
+ if (fAlpha < -TMath::Pi()) {
+ fAlpha += 2.0 * TMath::Pi();
+ }
+ else if (fAlpha >= TMath::Pi()) {
+ fAlpha -= 2.0 * TMath::Pi();
+ }
}
- fX=x;
-
- fY=p[0];
- fZ=p[1]; SaveLocalConvConst();
- fT=p[3]; x=GetLocalConvConst();
- fC=p[4]/x;
- fE=fC*fX - p[2];
-
-
- c[10]/=x; c[11]/=x; c[12]/=x; c[13]/=x; c[14]/=x*x;
-
- Double_t c22=fX*fX*c[14] - 2*fX*c[12] + c[5];
- Double_t c32=fX*c[13] - c[8];
- Double_t c20=fX*c[10] - c[3], c21=fX*c[11] - c[4], c42=fX*c[14] - c[12];
-
- fCyy=c[0 ];
- fCzy=c[1 ]; fCzz=c[2 ];
- fCey=c20; fCez=c21; fCee=c22;
- fCty=c[6 ]; fCtz=c[7 ]; fCte=c32; fCtt=c[9 ];
- fCcy=c[10]; fCcz=c[11]; fCce=c42; fCct=c[13]; fCcc=c[14];
+ fX = x;
+ fY = p[0];
+ fZ = p[1];
+ SaveLocalConvConst();
+ fT = p[3];
+ x = GetLocalConvConst();
+ fC = p[4] / x;
+ fE = fC*fX - p[2];
+
+ c[10] /= x;
+ c[11] /= x;
+ c[12] /= x;
+ c[13] /= x;
+ c[14] /= x*x;
+
+ Double_t c22 = fX*fX * c[14] - 2.0*fX*c[12] + c[ 5];
+ Double_t c32 = fX * c[13] - c[ 8];
+ Double_t c20 = fX * c[10] - c[ 3];
+ Double_t c21 = fX * c[11] - c[ 4];
+ Double_t c42 = fX * c[14] - c[12];
+
+ fCyy = c[ 0];
+ fCzy = c[ 1]; fCzz = c[ 2];
+ fCey = c20; fCez = c21; fCee = c22;
+ fCty = c[ 6]; fCtz = c[ 7]; fCte = c32; fCtt = c[ 9];
+ fCcy = c[10]; fCcz = c[11]; fCce = c42; fCct = c[13]; fCcc = c[14];
+
+ for (k = 0; k < kMAXCLUSTERSPERTRACK; k++) {
+ fdQdl[k] = 0;
+ //fIndex[k] = 0; //MI store indexes
+ }
- // Initialization [SR, GSI, 18.02.2003]
- for(UInt_t i=0; i<kMAXCLUSTERSPERTRACK; i++) {
- fdQdl[i] = 0;
- // fIndex[i] = 0; //MI store indexes
+ for (i = 0; i < 3; i++) {
+ fBudget[i] = 0;
+ }
+ if ((t.GetStatus() & AliESDtrack::kTIME) == 0) {
+ return;
}
- for (Int_t i=0;i<3;i++) { fBudget[i]=0;};
- if ((t.GetStatus()&AliESDtrack::kTIME) == 0) return;
StartTimeIntegral();
- Double_t times[10]; t.GetIntegratedTimes(times); SetIntegratedTimes(times);
+ Double_t times[10];
+ t.GetIntegratedTimes(times);
+ SetIntegratedTimes(times);
SetIntegratedLength(t.GetIntegratedLength());
}
// Destructor
//
- if (fBackupTrack) delete fBackupTrack;
+ if (fBackupTrack) {
+ delete fBackupTrack;
+ }
fBackupTrack = 0;
}
// Assignment operator
//
- fLhElectron = 0.0;
- fNWrong = 0;
- fStopped = 0;
- fNRotate = 0;
- fNExpected =0;
- fNExpectedLast=0;
- fNdedx = 0;
- fNCross =0;
- fNLast =0;
- fChi2Last =0;
- fBackupTrack =0;
+ fLhElectron = 0.0;
+ fNWrong = 0;
+ fStopped = 0;
+ fNRotate = 0;
+ fNExpected = 0;
+ fNExpectedLast = 0;
+ fNdedx = 0;
+ fNCross = 0;
+ fNLast = 0;
+ fChi2Last = 0;
+ fBackupTrack = 0;
fAlpha = t.GetAlpha();
- if (fAlpha < -TMath::Pi()) fAlpha += 2*TMath::Pi();
- else if (fAlpha >= TMath::Pi()) fAlpha -= 2*TMath::Pi();
+ if (fAlpha < -TMath::Pi()) {
+ fAlpha += 2.0 * TMath::Pi();
+ }
+ else if (fAlpha >= TMath::Pi()) {
+ fAlpha -= 2.0 * TMath::Pi();
+ }
return *this;
// Defines the status of the TOF extrapolation
//
- Float_t res = (0.2 + 0.8*(fN/(fNExpected+5.)))*(0.4+0.6*fTracklets[5].GetN()/20.);
- res *= (0.25+0.8*40./(40.+fBudget[2]));
+ // Definition of res ????
+ Float_t res = (0.2 + 0.8 * (fN / (fNExpected + 5.0)))
+ * (0.4 + 0.6 * fTracklets[5].GetN() / 20.0);
+ res *= (0.25 + 0.8 * 40.0 / (40.0 + fBudget[2]));
return res;
- Int_t status=0;
- if (GetNumberOfClusters()<20) return 0; //
- if (fN>110&&fChi2/(Float_t(fN))<3) return 3; //gold
- if (fNLast>30&&fChi2Last/(Float_t(fNLast))<3) return 3; //gold
- if (fNLast>20&&fChi2Last/(Float_t(fNLast))<2) return 3; //gold
- if (fNLast/(fNExpectedLast+3.)>0.8 && fChi2Last/Float_t(fNLast)<5&&fNLast>20) return 2; //silber
- if (fNLast>5 &&((fNLast+1.)/(fNExpectedLast+1.))>0.8&&fChi2Last/(fNLast-5.)<6) return 1;
+ // This part of the function is never reached ????
+ // What defines these parameters ????
+ Int_t status = 0;
+ if (GetNumberOfClusters() < 20) return 0;
+ if ((fN > 110) &&
+ (fChi2/(Float_t(fN)) < 3.0)) return 3; // Gold
+ if ((fNLast > 30) &&
+ (fChi2Last/(Float_t(fNLast)) < 3.0)) return 3; // Gold
+ if ((fNLast > 20) &&
+ (fChi2Last/(Float_t(fNLast)) < 2.0)) return 3; // Gold
+ if ((fNLast/(fNExpectedLast+3.0) > 0.8) &&
+ (fChi2Last/Float_t(fNLast) < 5.0) &&
+ (fNLast > 20)) return 2; // Silver
+ if ((fNLast > 5) &&
+ (((fNLast+1.0)/(fNExpectedLast+1.0)) > 0.8) &&
+ (fChi2Last/(fNLast-5.0) < 6.0)) return 1;
return status;
// This function returns external representation of the covriance matrix.
//
- Double_t a=GetLocalConvConst();
+ Double_t a = GetLocalConvConst();
- Double_t c22=fX*fX*fCcc-2*fX*fCce+fCee;
- Double_t c32=fX*fCct-fCte;
- Double_t c20=fX*fCcy-fCey, c21=fX*fCcz-fCez, c42=fX*fCcc-fCce;
+ Double_t c22 = fX*fX*fCcc - 2.0*fX*fCce+fCee;
+ Double_t c32 = fX*fCct-fCte;
+ Double_t c20 = fX*fCcy-fCey;
+ Double_t c21 = fX*fCcz-fCez;
+ Double_t c42 = fX*fCcc-fCce;
- cc[0 ]=fCyy;
- cc[1 ]=fCzy; cc[2 ]=fCzz;
- cc[3 ]=c20; cc[4 ]=c21; cc[5 ]=c22;
- cc[6 ]=fCty; cc[7 ]=fCtz; cc[8 ]=c32; cc[9 ]=fCtt;
+ cc[ 0]=fCyy;
+ cc[ 1]=fCzy; cc[ 2]=fCzz;
+ cc[ 3]=c20; cc[ 4]=c21; cc[ 5]=c22;
+ cc[ 6]=fCty; cc[ 7]=fCtz; cc[ 8]=c32; cc[ 9]=fCtt;
cc[10]=fCcy*a; cc[11]=fCcz*a; cc[12]=c42*a; cc[13]=fCct*a; cc[14]=fCcc*a*a;
}
// Returns the track covariance matrix
//
- cc[0]=fCyy;
- cc[1]=fCzy; cc[2]=fCzz;
- cc[3]=fCey; cc[4]=fCez; cc[5]=fCee;
- cc[6]=fCcy; cc[7]=fCcz; cc[8]=fCce; cc[9]=fCcc;
+ cc[ 0]=fCyy;
+ cc[ 1]=fCzy; cc[ 2]=fCzz;
+ cc[ 3]=fCey; cc[ 4]=fCez; cc[ 5]=fCee;
+ cc[ 6]=fCcy; cc[ 7]=fCcz; cc[ 8]=fCce; cc[ 9]=fCcc;
cc[10]=fCty; cc[11]=fCtz; cc[12]=fCte; cc[13]=fCct; cc[14]=fCtt;
}
}
//_____________________________________________________________________________
-void AliTRDtrack::CookdEdx(Double_t low, Double_t up) {
- //-----------------------------------------------------------------
- // Calculates dE/dX within the "low" and "up" cuts.
- //-----------------------------------------------------------------
-
- Int_t i;
- //Int_t nc=GetNumberOfClusters();
- Int_t nc=fNdedx;
- if (nc<10) {
+void AliTRDtrack::CookdEdx(Double_t low, Double_t up)
+{
+ //
+ // Calculates the dE/dX within the "low" and "up" cuts.
+ //
+
+ Int_t i = 0;
+
+ // Number of clusters used for dedx
+ Int_t nc = fNdedx;
+ // Require at least 10 clusters for a dedx measurement
+ // Should fdEdxT not also be set here ????
+ if (nc < 10) {
SetdEdx(0);
return;
}
+ // Get the charge deposits from each cluster
Float_t sorted[kMAXCLUSTERSPERTRACK];
- for (i=0; i < nc; i++) {
- sorted[i]=fdQdl[i];
- }
- Int_t nl=Int_t(low*nc), nu=Int_t(up*nc);
- Float_t dedx=0;
- //for (i=nl; i<=nu; i++) dedx += sorted[i];
- //dedx /= (nu-nl+1);
- for (i=0; i<nc; i++) dedx += sorted[i]; // ADDED by PS
- if((nu-nl)) dedx /= (nu-nl); // ADDED by PS
-
- //SetdEdx(dedx);
- //
- // now real truncated mean
- for (i=0; i < nc; i++) {
- sorted[i]=TMath::Abs(fdQdl[i]);
- }
- Int_t * index = new Int_t[nc];
- TMath::Sort(nc, sorted, index,kFALSE);
- dedx=0;
- for (i=nl; i<=nu; i++) dedx += sorted[index[i]];
- dedx /= (nu-nl+1);
+ for (i = 0; i < nc; i++) {
+ sorted[i] = fdQdl[i];
+ }
+
+ // Lower and upper bound
+ Int_t nl = Int_t(low * nc);
+ Int_t nu = Int_t( up * nc);
+
+ // Sum up the total energy deposit
+ Float_t dedx = 0.0;
+ for (i = 0; i < nc; i++) {
+ dedx += sorted[i];
+ }
+ // Why is dedx divided by (nu - nl) ????
+ // And why is it not saved ????
+ if ((nu - nl) != 0) {
+ dedx /= (nu - nl);
+ }
+
+ // Calculate the truncated mean
+ // Can fdQdl be negative ???? Why is it nor checked above ????
+ for (i = 0; i < nc; i++) {
+ sorted[i] = TMath::Abs(fdQdl[i]);
+ }
+
+ // Sort the dedx values by amplitude
+ Int_t *index = new Int_t[nc];
+ TMath::Sort(nc,sorted,index,kFALSE);
+ // Sum up the truncated charge between nl and nu
+ dedx = 0.0;
+ for (i = nl; i <= nu; i++) {
+ dedx += sorted[index[i]];
+ }
+ dedx /= (nu - nl + 1);
+
+ // Why are fdEdx and fdEdxT set to the same value ????
fdEdxT = dedx;
- delete [] index;
SetdEdx(dedx);
+ delete [] index;
+
}
//_____________________________________________________________________________
Int_t AliTRDtrack::PropagateTo(Double_t xk,Double_t x0,Double_t rho)
{
+ //
// Propagates a track of particle with mass=pm to a reference plane
// defined by x=xk through media of density=rho and radiationLength=x0
+ //
+
+ if (xk == fX) {
+ return 1;
+ }
+
+ if (TMath::Abs(fC*xk - fE) >= 0.9) {
+ return 0;
+ }
+
+ Double_t lcc = GetLocalConvConst();
- if (xk == fX) return 1;
+ Double_t oldX = fX;
+ Double_t oldY = fY;
+ Double_t oldZ = fZ;
- if (TMath::Abs(fC*xk - fE) >= 0.90000) {
- // Int_t n=GetNumberOfClusters();
- //if (n>4) cerr << n << " AliTRDtrack: Propagation failed, \tPt = "
- // << GetPt() << "\t" << GetLabel() << "\t" << GetMass() << endl;
+ Double_t x1 = fX;
+ Double_t x2 = x1 + (xk - x1);
+ Double_t dx = x2 - x1;
+ Double_t y1 = fY;
+ Double_t z1 = fZ;
+ Double_t c1 = fC*x1 - fE;
+ if ((c1*c1) > 1) {
return 0;
}
- Double_t lcc=GetLocalConvConst();
-
- // track Length measurement [SR, GSI, 17.02.2003]
- Double_t oldX = fX, oldY = fY, oldZ = fZ;
-
- Double_t x1=fX, x2=x1+(xk-x1), dx=x2-x1, y1=fY, z1=fZ;
- Double_t c1=fC*x1 - fE;
- if((c1*c1) > 1) return 0;
- Double_t r1=sqrt(1.- c1*c1);
- Double_t c2=fC*x2 - fE;
- if((c2*c2) > 1) return 0;
- Double_t r2=sqrt(1.- c2*c2);
-
- fY += dx*(c1+c2)/(r1+r2);
- fZ += dx*(c1+c2)/(c1*r2 + c2*r1)*fT;
-
- //f = F - 1
- Double_t rr=r1+r2, cc=c1+c2, xx=x1+x2;
- Double_t f02=-dx*(2*rr + cc*(c1/r1 + c2/r2))/(rr*rr);
- Double_t f04= dx*(rr*xx + cc*(c1*x1/r1+c2*x2/r2))/(rr*rr);
- Double_t cr=c1*r2+c2*r1;
- Double_t f12=-dx*fT*(2*cr + cc*(c2*c1/r1-r1 + c1*c2/r2-r2))/(cr*cr);
- Double_t f13= dx*cc/cr;
- Double_t f14=dx*fT*(cr*xx-cc*(r1*x2-c2*c1*x1/r1+r2*x1-c1*c2*x2/r2))/(cr*cr);
-
- //b = C*ft
- Double_t b00=f02*fCey + f04*fCcy, b01=f12*fCey + f14*fCcy + f13*fCty;
- Double_t b10=f02*fCez + f04*fCcz, b11=f12*fCez + f14*fCcz + f13*fCtz;
- Double_t b20=f02*fCee + f04*fCce, b21=f12*fCee + f14*fCce + f13*fCte;
- Double_t b30=f02*fCte + f04*fCct, b31=f12*fCte + f14*fCct + f13*fCtt;
- Double_t b40=f02*fCce + f04*fCcc, b41=f12*fCce + f14*fCcc + f13*fCct;
-
- //a = f*b = f*C*ft
- Double_t a00=f02*b20+f04*b40,a01=f02*b21+f04*b41,a11=f12*b21+f14*b41+f13*b31;
-
- //F*C*Ft = C + (a + b + bt)
- fCyy += a00 + 2*b00;
+
+ Double_t r1 = TMath::Sqrt(1.0 - c1*c1);
+ Double_t c2 = fC*x2 - fE;
+ if ((c2*c2) > 1) {
+ return 0;
+ }
+
+ Double_t r2 = TMath::Sqrt(1.0 - c2*c2);
+
+ fY += dx*(c1+c2) / (r1+r2);
+ fZ += dx*(c1+c2) / (c1*r2 + c2*r1) * fT;
+
+ // f = F - 1
+ Double_t rr = r1+r2;
+ Double_t cc = c1+c2;
+ Double_t xx = x1+x2;
+ Double_t f02 = -dx*(2*rr + cc*(c1/r1 + c2/r2))/(rr*rr);
+ Double_t f04 = dx*(rr*xx + cc*(c1*x1/r1+c2*x2/r2))/(rr*rr);
+ Double_t cr = c1*r2+c2*r1;
+ Double_t f12 = -dx*fT*(2*cr + cc*(c2*c1/r1-r1 + c1*c2/r2-r2))/(cr*cr);
+ Double_t f13 = dx*cc/cr;
+ Double_t f14 = dx*fT*(cr*xx-cc*(r1*x2-c2*c1*x1/r1+r2*x1-c1*c2*x2/r2))/(cr*cr);
+
+ // b = C*ft
+ Double_t b00 = f02*fCey + f04*fCcy;
+ Double_t b01 = f12*fCey + f14*fCcy + f13*fCty;
+ Double_t b10 = f02*fCez + f04*fCcz;
+ Double_t b11 = f12*fCez + f14*fCcz + f13*fCtz;
+ Double_t b20 = f02*fCee + f04*fCce;
+ Double_t b21 = f12*fCee + f14*fCce + f13*fCte;
+ Double_t b30 = f02*fCte + f04*fCct;
+ Double_t b31 = f12*fCte + f14*fCct + f13*fCtt;
+ Double_t b40 = f02*fCce + f04*fCcc;
+ Double_t b41 = f12*fCce + f14*fCcc + f13*fCct;
+
+ // a = f*b = f*C*ft
+ Double_t a00 = f02*b20 + f04*b40;
+ Double_t a01 = f02*b21 + f04*b41;
+ Double_t a11 = f12*b21 + f14*b41 + f13*b31;
+
+ // F*C*Ft = C + (a + b + bt)
+ fCyy += a00 + 2.0*b00;
fCzy += a01 + b01 + b10;
fCey += b20;
fCty += b30;
fCcy += b40;
- fCzz += a11 + 2*b11;
+ fCzz += a11 + 2.0*b11;
fCez += b21;
fCtz += b31;
fCcz += b41;
- fX=x2;
+ fX = x2;
- //Change of the magnetic field *************
+ // Change of the magnetic field
SaveLocalConvConst();
- cc=fC;
- fC*=lcc/GetLocalConvConst();
- fE+=fX*(fC-cc);
-
- //Multiple scattering ******************
- Double_t d=sqrt((x1-fX)*(x1-fX)+(y1-fY)*(y1-fY)+(z1-fZ)*(z1-fZ));
- Double_t p2=(1.+ GetTgl()*GetTgl())/(Get1Pt()*Get1Pt());
- Double_t beta2=p2/(p2 + GetMass()*GetMass());
- Double_t theta2=14.1*14.1/(beta2*p2*1e6)*d/x0*rho;
-
- Double_t ey=fC*fX - fE, ez=fT;
- Double_t xz=fC*ez, zz1=ez*ez+1, xy=fE+ey;
+ cc = fC;
+ fC *= lcc / GetLocalConvConst();
+ fE += fX * (fC-cc);
+
+ // Multiple scattering
+ // What is 14.1 ????
+ Double_t d = TMath::Sqrt((x1-fX)*(x1-fX) + (y1-fY)*(y1-fY) + (z1-fZ)*(z1-fZ));
+ Double_t p2 = (1.0 + GetTgl()*GetTgl()) / (Get1Pt()*Get1Pt());
+ Double_t beta2 = p2 / (p2 + GetMass()*GetMass());
+ Double_t theta2 = 14.1*14.1 / (beta2*p2*1e6) * d / x0 * rho;
+ Double_t ey = fC*fX - fE;
+ Double_t ez = fT;
+ Double_t xz = fC*ez;
+ Double_t zz1 = ez*ez + 1.0;
+ Double_t xy = fE + ey;
- fCee += (2*ey*ez*ez*fE+1-ey*ey+ez*ez+fE*fE*ez*ez)*theta2;
+ fCee += (2.0*ey*ez*ez*fE + 1.0 - ey*ey + ez*ez + fE*fE*ez*ez) * theta2;
fCte += ez*zz1*xy*theta2;
fCtt += zz1*zz1*theta2;
fCce += xz*ez*xy*theta2;
fCct += xz*zz1*theta2;
fCcc += xz*xz*theta2;
- /*
- Double_t dc22 = (1-ey*ey+xz*xz*fX*fX)*theta2;
- Double_t dc32 = (xz*fX*zz1)*theta2;
- Double_t dc33 = (zz1*zz1)*theta2;
- Double_t dc42 = (xz*fX*xz)*theta2;
- Double_t dc43 = (zz1*xz)*theta2;
- Double_t dc44 = (xz*xz)*theta2;
- fCee += dc22;
- fCte += dc32;
- fCtt += dc33;
- fCce += dc42;
- fCct += dc43;
- fCcc += dc44;
- */
- //Energy losses************************
- if((5940*beta2/(1-beta2+1e-10) - beta2) < 0) return 0;
- Double_t dE=0.153e-3/beta2*(log(5940*beta2/(1-beta2+1e-10)) - beta2)*d*rho;
- Float_t budget = d* rho;
+ // Energy losses
+ // What is 5940.0 ???? and 0.153e-3 ????
+ if ((5940.0*beta2 / (1.0 - beta2 + 1e-10) - beta2) < 0.0) {
+ return 0;
+ }
+ Double_t dE = 0.153e-3/beta2 * (TMath::Log(5940.0*beta2 / (1.0 - beta2 + 1e-10)) - beta2)
+ * d * rho;
+ Float_t budget = d * rho;
fBudget[0] +=budget;
- //
- // suspicious part - think about it ?
+
+ // Suspicious part - think about it ????
Double_t kinE = TMath::Sqrt(p2);
- if (dE>0.8*kinE) dE = 0.8*kinE; //
- if (dE<0) dE = 0.0; // not valid region for Bethe bloch
- //
- //
- fDE+=dE;
- if (x1 < x2) dE=-dE;
- cc=fC;
- fC*=(1.- sqrt(p2+GetMass()*GetMass())/p2*dE);
- fE+=fX*(fC-cc);
- // Double_t sigmade = 0.1*dE*TMath::Sqrt(TMath::Sqrt(1+fT*fT)*90./(d+0.0001)); // 20 percent fluctuation - normalized to some length
- Double_t sigmade = 0.07*TMath::Sqrt(TMath::Abs(dE)); // energy loss fluctuation
- Double_t sigmac2 = sigmade*sigmade*fC*fC*(p2+GetMass()*GetMass())/(p2*p2);
+ if (dE > 0.8 * kinE) {
+ dE = 0.8 * kinE;
+ }
+ if (dE < 0.0) {
+ dE = 0.0; // Not valid region for Bethe bloch
+ }
+ fDE += dE;
+ if (x1 < x2) {
+ dE = -dE;
+ }
+ cc = fC;
+ fC *= (1.0 - TMath::Sqrt(p2 + GetMass()*GetMass()) / p2 * dE);
+ fE += fX * (fC - cc);
+
+ // Energy loss fluctuation
+ // Why 0.07 ????
+ Double_t sigmade = 0.07 * TMath::Sqrt(TMath::Abs(dE));
+ Double_t sigmac2 = sigmade*sigmade * fC*fC * (p2 + GetMass()*GetMass()) / (p2*p2);
fCcc += sigmac2;
- fCee += fX*fX*sigmac2;
-
- // track time measurement [SR, GSI 17.02.2002]
- if (x1 < x2)
- if (IsStartedTimeIntegral()) {
- Double_t l2 = TMath::Sqrt((fX-oldX)*(fX-oldX) + (fY-oldY)*(fY-oldY) + (fZ-oldZ)*(fZ-oldZ));
- if (TMath::Abs(l2*fC)>0.0001){
- // make correction for curvature if neccesary
- l2 = 0.5*TMath::Sqrt((fX-oldX)*(fX-oldX) + (fY-oldY)*(fY-oldY));
- l2 = 2*TMath::ASin(l2*fC)/fC;
- l2 = TMath::Sqrt(l2*l2+(fZ-oldZ)*(fZ-oldZ));
+ fCee += fX*fX * sigmac2;
+
+ // Track time measurement
+ if (x1 < x2) {
+ if (IsStartedTimeIntegral()) {
+ Double_t l2 = TMath::Sqrt((fX-oldX)*(fX-oldX)
+ + (fY-oldY)*(fY-oldY)
+ + (fZ-oldZ)*(fZ-oldZ));
+ if (TMath::Abs(l2*fC) > 0.0001){
+ // <ake correction for curvature if neccesary
+ l2 = 0.5 * TMath::Sqrt((fX-oldX)*(fX-oldX)
+ + (fY-oldY)*(fY-oldY));
+ l2 = 2.0 * TMath::ASin(l2 * fC) / fC;
+ l2 = TMath::Sqrt(l2*l2 + (fZ-oldZ)*(fZ-oldZ));
+ }
+ AddTimeStep(l2);
}
- AddTimeStep(l2);
}
return 1;
}
//_____________________________________________________________________________
-Int_t AliTRDtrack::Update(const AliTRDcluster *c, Double_t chisq, UInt_t index
- , Double_t h01)
+Int_t AliTRDtrack::Update(const AliTRDcluster *c, Double_t chisq
+ , UInt_t index, Double_t h01)
{
- // Assignes found cluster to the track and updates track information
+ //
+ // Assignes a found cluster to the track and updates track information
+ //
Bool_t fNoTilt = kTRUE;
- if(TMath::Abs(h01) > 0.003) fNoTilt = kFALSE;
- // add angular effect to the error contribution - MI
- Float_t tangent2 = (fC*fX-fE)*(fC*fX-fE);
- if (tangent2 < 0.90000){
- tangent2 = tangent2/(1.-tangent2);
+ // What is 0.003 ????
+ if (TMath::Abs(h01) > 0.003) {
+ fNoTilt = kFALSE;
}
- Float_t errang = tangent2*0.04; //
- Float_t padlength = TMath::Sqrt(c->GetSigmaZ2()*12.);
-
- Double_t r00=c->GetSigmaY2() +errang, r01=0., r11=c->GetSigmaZ2()*100.;
- r00+=fCyy; r01+=fCzy; r11+=fCzz;
- Double_t det=r00*r11 - r01*r01;
- Double_t tmp=r00; r00=r11/det; r11=tmp/det; r01=-r01/det;
-
- Double_t k00=fCyy*r00+fCzy*r01, k01=fCyy*r01+fCzy*r11;
- Double_t k10=fCzy*r00+fCzz*r01, k11=fCzy*r01+fCzz*r11;
- Double_t k20=fCey*r00+fCez*r01, k21=fCey*r01+fCez*r11;
- Double_t k30=fCty*r00+fCtz*r01, k31=fCty*r01+fCtz*r11;
- Double_t k40=fCcy*r00+fCcz*r01, k41=fCcy*r01+fCcz*r11;
- Double_t dy=c->GetY() - fY, dz=c->GetZ() - fZ;
- Double_t cur=fC + k40*dy + k41*dz, eta=fE + k20*dy + k21*dz;
-
-
- if(fNoTilt) {
- if (TMath::Abs(cur*fX-eta) >= 0.90000) {
- // Int_t n=GetNumberOfClusters();
- //if (n>4) cerr<<n<<" AliTRDtrack warning: Filtering failed !\n";
+ // Add angular effect to the error contribution
+ Float_t tangent2 = (fC*fX-fE) * (fC*fX-fE);
+ if (tangent2 < 0.90000){
+ tangent2 = tangent2 / (1.0 - tangent2);
+ }
+ // What is 0.04 ????
+ Float_t errang = tangent2 * 0.04;
+ Float_t padlength = TMath::Sqrt(c->GetSigmaZ2() * 12.0);
+
+ Double_t r00 = c->GetSigmaY2() + errang;
+ Double_t r01 = 0.0;
+ Double_t r11 = c->GetSigmaZ2() * 100.0;
+ r00 += fCyy;
+ r01 += fCzy;
+ r11 += fCzz;
+ Double_t det = r00*r11 - r01*r01;
+ Double_t tmp = r00;
+ r00 = r11 / det;
+ r11 = tmp / det;
+ r01 = -r01 / det;
+
+ Double_t k00 = fCyy*r00 + fCzy*r01;
+ Double_t k01 = fCyy*r01 + fCzy*r11;
+ Double_t k10 = fCzy*r00 + fCzz*r01;
+ Double_t k11 = fCzy*r01 + fCzz*r11;
+ Double_t k20 = fCey*r00 + fCez*r01;
+ Double_t k21 = fCey*r01 + fCez*r11;
+ Double_t k30 = fCty*r00 + fCtz*r01;
+ Double_t k31 = fCty*r01 + fCtz*r11;
+ Double_t k40 = fCcy*r00 + fCcz*r01;
+ Double_t k41 = fCcy*r01 + fCcz*r11;
+
+ Double_t dy = c->GetY() - fY;
+ Double_t dz = c->GetZ() - fZ;
+ Double_t cur = fC + k40*dy + k41*dz;
+ Double_t eta = fE + k20*dy + k21*dz;
+
+ if (fNoTilt) {
+
+ if (TMath::Abs(cur*fX-eta) >= 0.9) {
return 0;
}
fY += k00*dy + k01*dz;
fZ += k10*dy + k11*dz;
fE = eta;
- //fT += k30*dy + k31*dz;
fC = cur;
+
}
else {
- Double_t xuFactor = 100.; // empirical factor set by C.Xu
- // in the first tilt version
- dy=c->GetY() - fY; dz=c->GetZ() - fZ;
- dy=dy+h01*dz;
- Float_t add=0;
- if (TMath::Abs(dz)>padlength/2.){
- Float_t dy2 = c->GetY() - fY;
- Float_t sign = (dz>0) ? -1.: 1.;
- dy2+=h01*sign*padlength/2.;
- dy = dy2;
- add = 0;
- }
-
-
-
- r00=c->GetSigmaY2()+errang+add, r01=0., r11=c->GetSigmaZ2()*xuFactor;
- r00+=(fCyy+2.0*h01*fCzy+h01*h01*fCzz);
- r01+=(fCzy+h01*fCzz);
- r11+=fCzz;
-
- det=r00*r11 - r01*r01;
- tmp=r00; r00=r11/det; r11=tmp/det; r01=-r01/det;
- k00=fCyy*r00+fCzy*(r01+h01*r00),k01=fCyy*r01+fCzy*(r11+h01*r01);
- k10=fCzy*r00+fCzz*(r01+h01*r00),k11=fCzy*r01+fCzz*(r11+h01*r01);
- k20=fCey*r00+fCez*(r01+h01*r00),k21=fCey*r01+fCez*(r11+h01*r01);
- k30=fCty*r00+fCtz*(r01+h01*r00),k31=fCty*r01+fCtz*(r11+h01*r01);
- k40=fCcy*r00+fCcz*(r01+h01*r00),k41=fCcy*r01+fCcz*(r11+h01*r01);
-
-
- cur=fC + k40*dy + k41*dz; eta=fE + k20*dy + k21*dz;
- if (TMath::Abs(cur*fX-eta) >= 0.90000) {
- // Int_t n=GetNumberOfClusters();
- //if (n>4) cerr<<n<<" AliTRDtrack warning: Filtering failed !\n";
+ // Empirical factor set by C.Xu in the first tilt version
+ // Is this factor still ok ????
+ Double_t xuFactor = 100.0;
+ dy = c->GetY() - fY;
+ dz = c->GetZ() - fZ;
+ dy = dy + h01*dz;
+
+ Float_t add = 0.0;
+ if (TMath::Abs(dz) > padlength/2.0) {
+ Float_t dy2 = c->GetY() - fY;
+ Float_t sign = (dz > 0.0) ? -1.0 : 1.0;
+ dy2 += h01 * sign * padlength/2.0;
+ dy = dy2;
+ add = 0.0;
+ }
+
+ r00 = c->GetSigmaY2() + errang + add;
+ r01 = 0.0;
+ r11 = c->GetSigmaZ2() * xuFactor;
+ r00 += (fCyy + 2.0*h01*fCzy + h01*h01*fCzz);
+ r01 += (fCzy + h01*fCzz);
+ r11 += fCzz;
+
+ det = r00*r11 - r01*r01;
+ tmp = r00;
+ r00 = r11/det;
+ r11 = tmp/det;
+ r01 = -r01/det;
+
+ k00 = fCyy*r00 + fCzy * (r01 + h01*r00);
+ k01 = fCyy*r01 + fCzy * (r11 + h01*r01);
+ k10 = fCzy*r00 + fCzz * (r01 + h01*r00);
+ k11 = fCzy*r01 + fCzz * (r11 + h01*r01);
+ k20 = fCey*r00 + fCez * (r01 + h01*r00);
+ k21 = fCey*r01 + fCez * (r11 + h01*r01);
+ k30 = fCty*r00 + fCtz * (r01 + h01*r00);
+ k31 = fCty*r01 + fCtz * (r11 + h01*r01);
+ k40 = fCcy*r00 + fCcz * (r01 + h01*r00);
+ k41 = fCcy*r01 + fCcz * (r11 + h01*r01);
+
+ cur = fC + k40*dy + k41*dz;
+ eta = fE + k20*dy + k21*dz;
+ if (TMath::Abs(cur*fX - eta) >= 0.9) {
return 0;
}
- fY += k00*dy + k01*dz;
- fZ += k10*dy + k11*dz;
- fE = eta;
- fT += k30*dy + k31*dz;
- fC = cur;
+
+ fY += k00*dy + k01*dz;
+ fZ += k10*dy + k11*dz;
+ fE = eta;
+ fT += k30*dy + k31*dz;
+ fC = cur;
- k01+=h01*k00;
- k11+=h01*k10;
- k21+=h01*k20;
- k31+=h01*k30;
- k41+=h01*k40;
+ k01 += h01*k00;
+ k11 += h01*k10;
+ k21 += h01*k20;
+ k31 += h01*k30;
+ k41 += h01*k40;
}
- Double_t c01=fCzy, c02=fCey, c03=fCty, c04=fCcy;
- Double_t c12=fCez, c13=fCtz, c14=fCcz;
-
- fCyy-=k00*fCyy+k01*fCzy; fCzy-=k00*c01+k01*fCzz;
- fCey-=k00*c02+k01*c12; fCty-=k00*c03+k01*c13;
- fCcy-=k00*c04+k01*c14;
+ Double_t c01 = fCzy;
+ Double_t c02 = fCey;
+ Double_t c03 = fCty;
+ Double_t c04 = fCcy;
+ Double_t c12 = fCez;
+ Double_t c13 = fCtz;
+ Double_t c14 = fCcz;
+
+ fCyy -= k00*fCyy + k01*fCzy;
+ fCzy -= k00*c01 + k01*fCzz;
+ fCey -= k00*c02 + k01*c12;
+ fCty -= k00*c03 + k01*c13;
+ fCcy -= k00*c04 + k01*c14;
- fCzz-=k10*c01+k11*fCzz;
- fCez-=k10*c02+k11*c12; fCtz-=k10*c03+k11*c13;
- fCcz-=k10*c04+k11*c14;
+ fCzz -= k10*c01 + k11*fCzz;
+ fCez -= k10*c02 + k11*c12;
+ fCtz -= k10*c03 + k11*c13;
+ fCcz -= k10*c04 + k11*c14;
- fCee-=k20*c02+k21*c12; fCte-=k20*c03+k21*c13;
- fCce-=k20*c04+k21*c14;
+ fCee -= k20*c02 + k21*c12;
+ fCte -= k20*c03 + k21*c13;
+ fCce -= k20*c04 + k21*c14;
- fCtt-=k30*c03+k31*c13;
- fCct-=k40*c03+k41*c13;
- //fCct-=k30*c04+k31*c14; // symmetric formula MI
+ fCtt -= k30*c03 + k31*c13;
+ fCct -= k40*c03 + k41*c13;
- fCcc-=k40*c04+k41*c14;
+ fCcc -= k40*c04 + k41*c14;
- Int_t n=GetNumberOfClusters();
- fIndex[n]=index;
+ Int_t n = GetNumberOfClusters();
+ fIndex[n] = index;
SetNumberOfClusters(n+1);
SetChi2(GetChi2()+chisq);
- // cerr<<"in update: fIndex["<<fN<<"] = "<<index<<endl;
return 1;
}
//_____________________________________________________________________________
-Int_t AliTRDtrack::UpdateMI(const AliTRDcluster *c, Double_t chisq, UInt_t index, Double_t h01,
- Int_t /*plane*/)
+Int_t AliTRDtrack::UpdateMI(const AliTRDcluster *c, Double_t chisq
+ , UInt_t index, Double_t h01
+ , Int_t /*plane*/)
{
+ //
// Assignes found cluster to the track and updates track information
+ //
Bool_t fNoTilt = kTRUE;
- if(TMath::Abs(h01) > 0.003) fNoTilt = kFALSE;
- // add angular effect to the error contribution and make correction - MI
- //AliTRDclusterCorrection *corrector = AliTRDclusterCorrection::GetCorrection();
+ if (TMath::Abs(h01) > 0.003) {
+ fNoTilt = kFALSE;
+ }
+
+ //
+ // Add angular effect to the error contribution and make correction
+ // Still needed ????
+ // AliTRDclusterCorrection *corrector = AliTRDclusterCorrection::GetCorrection();
//
- Double_t tangent2 = (fC*fX-fE)*(fC*fX-fE);
- if (tangent2 < 0.90000){
- tangent2 = tangent2/(1.-tangent2);
- }
- Double_t tangent = TMath::Sqrt(tangent2);
- if ((fC*fX-fE)<0) tangent*=-1;
- // Double_t correction = 0*plane;
- Double_t errang = tangent2*0.04; //
- Double_t errsys =0.025*0.025*20; //systematic error part
- Float_t extend =1;
- if (c->GetNPads()==4) extend=2;
- //if (c->GetNPads()==5) extend=3;
- //if (c->GetNPads()==6) extend=3;
- //if (c->GetQ()<15) return 1;
+ Double_t tangent2 = (fC*fX-fE) * (fC*fX-fE);
+ if (tangent2 < 0.9) {
+ tangent2 = tangent2 / (1.0 - tangent2);
+ }
+ Double_t tangent = TMath::Sqrt(tangent2);
+ if ((fC*fX-fE) < 0.0) {
+ tangent *= -1.0;
+ }
+
+ // Where are the parameters from ????
+ Double_t errang = tangent2 * 0.04;
+ Double_t errsys = 0.025*0.025 * 20.0; // Systematic error part
+
+ Float_t extend = 1.0;
+ if (c->GetNPads() == 4) extend = 2.0;
+
+ /////////////////////////////////////////////////////////////////////////////
+ //
+ // Is this still needed or will it be needed ????
+ //
+ //if (c->GetNPads() == 5) extend = 3.0;
+ //if (c->GetNPads() == 6) extend = 3.0;
+ //if (c->GetQ() < 15) {
+ // return 1;
+ //}
+ //
+ // Will this be needed ????
/*
- if (corrector!=0){
+ if (corrector !=0 ) {
//if (0){
correction = corrector->GetCorrection(plane,c->GetLocalTimeBin(),tangent);
if (TMath::Abs(correction)>0){
}
}
*/
- //
+ //
// Double_t padlength = TMath::Sqrt(c->GetSigmaZ2()*12.);
-
- Double_t r00=(c->GetSigmaY2() +errang+errsys)*extend, r01=0., r11=c->GetSigmaZ2()*10000.;
- r00+=fCyy; r01+=fCzy; r11+=fCzz;
- Double_t det=r00*r11 - r01*r01;
- Double_t tmp=r00; r00=r11/det; r11=tmp/det; r01=-r01/det;
-
- Double_t k00=fCyy*r00+fCzy*r01, k01=fCyy*r01+fCzy*r11;
- Double_t k10=fCzy*r00+fCzz*r01, k11=fCzy*r01+fCzz*r11;
- Double_t k20=fCey*r00+fCez*r01, k21=fCey*r01+fCez*r11;
- Double_t k30=fCty*r00+fCtz*r01, k31=fCty*r01+fCtz*r11;
- Double_t k40=fCcy*r00+fCcz*r01, k41=fCcy*r01+fCcz*r11;
-
- Double_t dy=c->GetY() - fY, dz=c->GetZ() - fZ;
- Double_t cur=fC + k40*dy + k41*dz, eta=fE + k20*dy + k21*dz;
-
-
- if(fNoTilt) {
- if (TMath::Abs(cur*fX-eta) >= 0.90000) {
- // Int_t n=GetNumberOfClusters();
- //if (n>4) cerr<<n<<" AliTRDtrack warning: Filtering failed !\n";
+ /////////////////////////////////////////////////////////////////////////////
+
+ Double_t r00 = (c->GetSigmaY2() + errang + errsys) * extend;
+ Double_t r01 = 0.0;
+ Double_t r11 = c->GetSigmaZ2()*10000.0;
+ r00 += fCyy;
+ r01 += fCzy;
+ r11 += fCzz;
+ Double_t det =r00*r11 - r01*r01;
+ Double_t tmp =r00;
+ r00 = r11 / det;
+ r11 = tmp / det;
+ r01 = -r01 / det;
+
+ Double_t k00 = fCyy*r00 + fCzy*r01;
+ Double_t k01 = fCyy*r01 + fCzy*r11;
+ Double_t k10 = fCzy*r00 + fCzz*r01;
+ Double_t k11 = fCzy*r01 + fCzz*r11;
+ Double_t k20 = fCey*r00 + fCez*r01;
+ Double_t k21 = fCey*r01 + fCez*r11;
+ Double_t k30 = fCty*r00 + fCtz*r01;
+ Double_t k31 = fCty*r01 + fCtz*r11;
+ Double_t k40 = fCcy*r00 + fCcz*r01;
+ Double_t k41 = fCcy*r01 + fCcz*r11;
+
+ Double_t dy = c->GetY() - fY;
+ Double_t dz = c->GetZ() - fZ;
+ Double_t cur = fC + k40*dy + k41*dz;
+ Double_t eta = fE + k20*dy + k21*dz;
+
+ if (fNoTilt) {
+
+ if (TMath::Abs(cur*fX - eta) >= 0.9) {
return 0;
}
+
fY += k00*dy + k01*dz;
fZ += k10*dy + k11*dz;
fE = eta;
- //fT += k30*dy + k31*dz;
fC = cur;
+
}
else {
- Double_t padlength = TMath::Sqrt(c->GetSigmaZ2()*12);
-
- Double_t xuFactor = 1000.; // empirical factor set by C.Xu
- // in the first tilt version
- dy=c->GetY() - fY; dz=c->GetZ() - fZ;
- //dy=dy+h01*dz+correction;
+
+ Double_t padlength = TMath::Sqrt(c->GetSigmaZ2() * 12.0);
+ // Empirical factor set by C.Xu in the first tilt version
+ Double_t xuFactor = 1000.0;
+
+ dy = c->GetY() - fY;
+ dz = c->GetZ() - fZ;
+ //dy = dy + h01*dz + correction; // Still needed ????
Double_t tiltdz = dz;
- if (TMath::Abs(tiltdz)>padlength/2.) {
- tiltdz = TMath::Sign(padlength/2,dz);
+ if (TMath::Abs(tiltdz) > padlength/2.0) {
+ tiltdz = TMath::Sign(padlength/2.0,dz);
}
- // dy=dy+h01*dz;
- dy=dy+h01*tiltdz;
+ dy = dy + h01*tiltdz;
- Double_t add=0;
- if (TMath::Abs(dz)>padlength/2.){
- //Double_t dy2 = c->GetY() - fY;
+ Double_t add = 0.0;
+ if (TMath::Abs(dz) > padlength/2.0) {
+ //Double_t dy2 = c->GetY() - fY; // Still needed ????
//Double_t sign = (dz>0) ? -1.: 1.;
//dy2-=h01*sign*padlength/2.;
//dy = dy2;
- add =1;
+ add = 1.0;
}
- Double_t s00 = (c->GetSigmaY2()+errang)*extend+errsys+add; // error pad
- Double_t s11 = c->GetSigmaZ2()*xuFactor; // error pad-row
+
+ Double_t s00 = (c->GetSigmaY2() + errang) * extend + errsys + add; // Error pad
+ Double_t s11 = c->GetSigmaZ2() * xuFactor; // Error pad-row
//
- r00 = fCyy + 2*fCzy*h01 + fCzz*h01*h01+s00;
- r01 = fCzy + fCzz*h01;
- r11 = fCzz + s11;
- det = r00*r11 - r01*r01;
- // inverse matrix
- tmp=r00; r00=r11/det; r11=tmp/det; r01=-r01/det;
+ r00 = fCyy + 2*fCzy*h01 + fCzz*h01*h01 + s00;
+ r01 = fCzy + fCzz*h01;
+ r11 = fCzz + s11;
+ det = r00*r11 - r01*r01;
+
+ // Inverse matrix
+ tmp = r00;
+ r00 = r11 / det;
+ r11 = tmp / det;
+ r01 = -r01 / det;
// K matrix
- k00=fCyy*r00+fCzy*(r01+h01*r00),k01=fCyy*r01+fCzy*(r11+h01*r01);
- k10=fCzy*r00+fCzz*(r01+h01*r00),k11=fCzy*r01+fCzz*(r11+h01*r01);
- k20=fCey*r00+fCez*(r01+h01*r00),k21=fCey*r01+fCez*(r11+h01*r01);
- k30=fCty*r00+fCtz*(r01+h01*r00),k31=fCty*r01+fCtz*(r11+h01*r01);
- k40=fCcy*r00+fCcz*(r01+h01*r00),k41=fCcy*r01+fCcz*(r11+h01*r01);
- //
- //Update measurement
- cur=fC + k40*dy + k41*dz; eta=fE + k20*dy + k21*dz;
- if (TMath::Abs(cur*fX-eta) >= 0.90000) {
- //Int_t n=GetNumberOfClusters();
- // if (n>4) cerr<<n<<" AliTRDtrack warning: Filtering failed !\n";
+ k00 = fCyy*r00 + fCzy * (r01 + h01*r00);
+ k01 = fCyy*r01 + fCzy * (r11 + h01*r01);
+ k10 = fCzy*r00 + fCzz * (r01 + h01*r00);
+ k11 = fCzy*r01 + fCzz * (r11 + h01*r01);
+ k20 = fCey*r00 + fCez * (r01 + h01*r00);
+ k21 = fCey*r01 + fCez * (r11 + h01*r01);
+ k30 = fCty*r00 + fCtz * (r01 + h01*r00);
+ k31 = fCty*r01 + fCtz * (r11 + h01*r01);
+ k40 = fCcy*r00 + fCcz * (r01 + h01*r00);
+ k41 = fCcy*r01 + fCcz * (r11 + h01*r01);
+
+ // Update measurement
+ cur = fC + k40*dy + k41*dz;
+ eta = fE + k20*dy + k21*dz;
+ if (TMath::Abs(cur*fX - eta) >= 0.9) {
return 0;
}
- fY += k00*dy + k01*dz;
- fZ += k10*dy + k11*dz;
- fE = eta;
- fT += k30*dy + k31*dz;
- fC = cur;
+ fY += k00*dy + k01*dz;
+ fZ += k10*dy + k11*dz;
+ fE = eta;
+ fT += k30*dy + k31*dz;
+ fC = cur;
- k01+=h01*k00;
- k11+=h01*k10;
- k21+=h01*k20;
- k31+=h01*k30;
- k41+=h01*k40;
+ k01 += h01*k00;
+ k11 += h01*k10;
+ k21 += h01*k20;
+ k31 += h01*k30;
+ k41 += h01*k40;
}
- //Update covariance
- //
- //
- Double_t oldyy = fCyy, oldzz = fCzz; //, oldee=fCee, oldcc =fCcc;
- Double_t oldzy = fCzy, oldey = fCey, oldty=fCty, oldcy =fCcy;
- Double_t oldez = fCez, oldtz = fCtz, oldcz=fCcz;
- //Double_t oldte = fCte, oldce = fCce;
+
+ // Update the covariance matrix
+ Double_t oldyy = fCyy;
+ Double_t oldzz = fCzz;
+ //Double_t oldee = fCee;
+ //Double_t oldcc = fCcc;
+ Double_t oldzy = fCzy;
+ Double_t oldey = fCey;
+ Double_t oldty = fCty;
+ Double_t oldcy = fCcy;
+ Double_t oldez = fCez;
+ Double_t oldtz = fCtz;
+ Double_t oldcz = fCcz;
+ //Double_t oldte = fCte;
+ //Double_t oldce = fCce;
//Double_t oldct = fCct;
- fCyy-=k00*oldyy+k01*oldzy;
- fCzy-=k10*oldyy+k11*oldzy;
- fCey-=k20*oldyy+k21*oldzy;
- fCty-=k30*oldyy+k31*oldzy;
- fCcy-=k40*oldyy+k41*oldzy;
- //
- fCzz-=k10*oldzy+k11*oldzz;
- fCez-=k20*oldzy+k21*oldzz;
- fCtz-=k30*oldzy+k31*oldzz;
- fCcz-=k40*oldzy+k41*oldzz;
- //
- fCee-=k20*oldey+k21*oldez;
- fCte-=k30*oldey+k31*oldez;
- fCce-=k40*oldey+k41*oldez;
- //
- fCtt-=k30*oldty+k31*oldtz;
- fCct-=k40*oldty+k41*oldtz;
- //
- fCcc-=k40*oldcy+k41*oldcz;
- //
+ fCyy -= k00*oldyy + k01*oldzy;
+ fCzy -= k10*oldyy + k11*oldzy;
+ fCey -= k20*oldyy + k21*oldzy;
+ fCty -= k30*oldyy + k31*oldzy;
+ fCcy -= k40*oldyy + k41*oldzy;
+
+ fCzz -= k10*oldzy + k11*oldzz;
+ fCez -= k20*oldzy + k21*oldzz;
+ fCtz -= k30*oldzy + k31*oldzz;
+ fCcz -= k40*oldzy + k41*oldzz;
+
+ fCee -= k20*oldey + k21*oldez;
+ fCte -= k30*oldey + k31*oldez;
+ fCce -= k40*oldey + k41*oldez;
+
+ fCtt -= k30*oldty + k31*oldtz;
+ fCct -= k40*oldty + k41*oldtz;
+
+ fCcc -= k40*oldcy + k41*oldcz;
- Int_t n=GetNumberOfClusters();
- fIndex[n]=index;
+ Int_t n = GetNumberOfClusters();
+ fIndex[n] = index;
SetNumberOfClusters(n+1);
- SetChi2(GetChi2()+chisq);
- // cerr<<"in update: fIndex["<<fN<<"] = "<<index<<endl;
+ SetChi2(GetChi2() + chisq);
return 1;
//
// Assignes found tracklet to the track and updates track information
//
- //
- Double_t r00=(tracklet.GetTrackletSigma2()), r01=0., r11= 10000.;
- r00+=fCyy; r01+=fCzy; r11+=fCzz;
- //
- Double_t det=r00*r11 - r01*r01;
- Double_t tmp=r00; r00=r11/det; r11=tmp/det; r01=-r01/det;
- //
+
+ Double_t r00 = (tracklet.GetTrackletSigma2());
+ Double_t r01 = 0.0;
+ Double_t r11 = 10000.0;
+ r00 += fCyy;
+ r01 += fCzy;
+ r11 += fCzz;
+
+ Double_t det = r00*r11 - r01*r01;
+ Double_t tmp = r00;
+ r00 = r11 / det;
+ r11 = tmp / det;
+ r01 = -r01 / det;
- Double_t dy=tracklet.GetY() - fY, dz=tracklet.GetZ() - fZ;
+ Double_t dy = tracklet.GetY() - fY;
+ Double_t dz = tracklet.GetZ() - fZ;
-
- Double_t s00 = tracklet.GetTrackletSigma2(); // error pad
- Double_t s11 = 100000; // error pad-row
+ Double_t s00 = tracklet.GetTrackletSigma2(); // Error pad
+ Double_t s11 = 100000.0; // Error pad-row
Float_t h01 = tracklet.GetTilt();
- //
- // r00 = fCyy + 2*fCzy*h01 + fCzz*h01*h01+s00;
- r00 = fCyy + fCzz*h01*h01+s00;
- // r01 = fCzy + fCzz*h01;
- r01 = fCzy ;
+
+ r00 = fCyy + fCzz*h01*h01 + s00;
+ r01 = fCzy;
r11 = fCzz + s11;
det = r00*r11 - r01*r01;
- // inverse matrix
- tmp=r00; r00=r11/det; r11=tmp/det; r01=-r01/det;
-
- Double_t k00=fCyy*r00+fCzy*r01, k01=fCyy*r01+fCzy*r11;
- Double_t k10=fCzy*r00+fCzz*r01, k11=fCzy*r01+fCzz*r11;
- Double_t k20=fCey*r00+fCez*r01, k21=fCey*r01+fCez*r11;
- Double_t k30=fCty*r00+fCtz*r01, k31=fCty*r01+fCtz*r11;
- Double_t k40=fCcy*r00+fCcz*r01, k41=fCcy*r01+fCcz*r11;
-
+
+ // Inverse matrix
+ tmp = r00;
+ r00 = r11 / det;
+ r11 = tmp / det;
+ r01 = -r01 / det;
+
// K matrix
-// k00=fCyy*r00+fCzy*(r01+h01*r00),k01=fCyy*r01+fCzy*(r11+h01*r01);
-// k10=fCzy*r00+fCzz*(r01+h01*r00),k11=fCzy*r01+fCzz*(r11+h01*r01);
-// k20=fCey*r00+fCez*(r01+h01*r00),k21=fCey*r01+fCez*(r11+h01*r01);
-// k30=fCty*r00+fCtz*(r01+h01*r00),k31=fCty*r01+fCtz*(r11+h01*r01);
-// k40=fCcy*r00+fCcz*(r01+h01*r00),k41=fCcy*r01+fCcz*(r11+h01*r01);
- //
- //Update measurement
- Double_t cur=fC + k40*dy + k41*dz, eta=fE + k20*dy + k21*dz;
- // cur=fC + k40*dy + k41*dz; eta=fE + k20*dy + k21*dz;
- if (TMath::Abs(cur*fX-eta) >= 0.90000) {
- //Int_t n=GetNumberOfClusters();
- // if (n>4) cerr<<n<<" AliTRDtrack warning: Filtering failed !\n";
+ Double_t k00 = fCyy*r00 + fCzy*r01;
+ Double_t k01 = fCyy*r01 + fCzy*r11;
+ Double_t k10 = fCzy*r00 + fCzz*r01;
+ Double_t k11 = fCzy*r01 + fCzz*r11;
+ Double_t k20 = fCey*r00 + fCez*r01;
+ Double_t k21 = fCey*r01 + fCez*r11;
+ Double_t k30 = fCty*r00 + fCtz*r01;
+ Double_t k31 = fCty*r01 + fCtz*r11;
+ Double_t k40 = fCcy*r00 + fCcz*r01;
+ Double_t k41 = fCcy*r01 + fCcz*r11;
+
+ // Update measurement
+ Double_t cur = fC + k40*dy + k41*dz;
+ Double_t eta = fE + k20*dy + k21*dz;
+ if (TMath::Abs(cur*fX-eta) >= 0.9) {
return 0;
}
-// k01+=h01*k00;
-// k11+=h01*k10;
-// k21+=h01*k20;
-// k31+=h01*k30;
-// k41+=h01*k40;
-
fY += k00*dy + k01*dz;
fZ += k10*dy + k11*dz;
fT += k30*dy + k31*dz;
fC = cur;
-
- //Update covariance
- //
- //
- Double_t oldyy = fCyy, oldzz = fCzz; //, oldee=fCee, oldcc =fCcc;
- Double_t oldzy = fCzy, oldey = fCey, oldty=fCty, oldcy =fCcy;
- Double_t oldez = fCez, oldtz = fCtz, oldcz=fCcz;
- //Double_t oldte = fCte, oldce = fCce;
+ // Update the covariance matrix
+ Double_t oldyy = fCyy;
+ Double_t oldzz = fCzz;
+ //Double_t oldee = fCee;
+ //Double_t oldcc = fCcc;
+ Double_t oldzy = fCzy;
+ Double_t oldey = fCey;
+ Double_t oldty = fCty;
+ Double_t oldcy = fCcy;
+ Double_t oldez = fCez;
+ Double_t oldtz = fCtz;
+ Double_t oldcz = fCcz;
+ //Double_t oldte = fCte;
+ //Double_t oldce = fCce;
//Double_t oldct = fCct;
- fCyy-=k00*oldyy+k01*oldzy;
- fCzy-=k10*oldyy+k11*oldzy;
- fCey-=k20*oldyy+k21*oldzy;
- fCty-=k30*oldyy+k31*oldzy;
- fCcy-=k40*oldyy+k41*oldzy;
- //
- fCzz-=k10*oldzy+k11*oldzz;
- fCez-=k20*oldzy+k21*oldzz;
- fCtz-=k30*oldzy+k31*oldzz;
- fCcz-=k40*oldzy+k41*oldzz;
- //
- fCee-=k20*oldey+k21*oldez;
- fCte-=k30*oldey+k31*oldez;
- fCce-=k40*oldey+k41*oldez;
- //
- fCtt-=k30*oldty+k31*oldtz;
- fCct-=k40*oldty+k41*oldtz;
- //
- fCcc-=k40*oldcy+k41*oldcz;
- //
- /*
- Int_t n=GetNumberOfClusters();
- fIndex[n]=index;
- SetNumberOfClusters(n+1);
-
- SetChi2(GetChi2()+chisq);
- // cerr<<"in update: fIndex["<<fN<<"] = "<<index<<endl;
- */
+ fCyy -= k00*oldyy + k01*oldzy;
+ fCzy -= k10*oldyy + k11*oldzy;
+ fCey -= k20*oldyy + k21*oldzy;
+ fCty -= k30*oldyy + k31*oldzy;
+ fCcy -= k40*oldyy + k41*oldzy;
+
+ fCzz -= k10*oldzy + k11*oldzz;
+ fCez -= k20*oldzy + k21*oldzz;
+ fCtz -= k30*oldzy + k31*oldzz;
+ fCcz -= k40*oldzy + k41*oldzz;
+
+ fCee -= k20*oldey + k21*oldez;
+ fCte -= k30*oldey + k31*oldez;
+ fCce -= k40*oldey + k41*oldez;
+
+ fCtt -= k30*oldty + k31*oldtz;
+ fCct -= k40*oldty + k41*oldtz;
+
+ fCcc -= k40*oldcy + k41*oldcz;
return 1;
//_____________________________________________________________________________
Int_t AliTRDtrack::Rotate(Double_t alpha, Bool_t absolute)
{
- // Rotates track parameters in R*phi plane
- // if absolute rotation alpha is in global system
- // otherwise alpha rotation is relative to the current rotation angle
-
+ //
+ // Rotates the track parameters in the R*phi plane,
+ // if the absolute rotation alpha is in global system.
+ // Otherwise the rotation is relative to the current rotation angle
+ //
+
if (absolute) {
alpha -= fAlpha;
}
}
fAlpha += alpha;
- if (fAlpha<-TMath::Pi()) fAlpha += 2*TMath::Pi();
- if (fAlpha>=TMath::Pi()) fAlpha -= 2*TMath::Pi();
-
- Double_t x1=fX, y1=fY;
- Double_t ca=cos(alpha), sa=sin(alpha);
- Double_t r1=fC*fX - fE;
-
- fX = x1*ca + y1*sa;
- fY =-x1*sa + y1*ca;
- if((r1*r1) > 1) return 0;
- fE=fE*ca + (fC*y1 + sqrt(1.- r1*r1))*sa;
-
- Double_t r2=fC*fX - fE;
- if (TMath::Abs(r2) >= 0.90000) {
- Int_t n=GetNumberOfClusters();
- if (n>4) cerr<<n<<" AliTRDtrack warning: Rotation failed !\n";
- return 0;
+ if (fAlpha < -TMath::Pi()) {
+ fAlpha += 2.0 * TMath::Pi();
}
+ if (fAlpha >= TMath::Pi()) {
+ fAlpha -= 2.0 * TMath::Pi();
+ }
+
+ Double_t x1 = fX;
+ Double_t y1 = fY;
+ Double_t ca = TMath::Cos(alpha);
+ Double_t sa = TMath::Sin(alpha);
+ Double_t r1 = fC*fX - fE;
- if((r2*r2) > 1) return 0;
- Double_t y0=fY + sqrt(1.- r2*r2)/fC;
- if ((fY-y0)*fC >= 0.) {
- Int_t n=GetNumberOfClusters();
- if (n>4) cerr<<n<<" AliTRDtrack warning: Rotation failed !!!\n";
+ fX = x1*ca + y1*sa;
+ fY = -x1*sa + y1*ca;
+ if ((r1*r1) > 1.0) {
return 0;
}
+ fE = fE*ca + (fC*y1 + TMath::Sqrt(1.0 - r1*r1)) * sa;
- //f = F - 1
- Double_t f00=ca-1, f24=(y1 - r1*x1/sqrt(1.- r1*r1))*sa,
- f20=fC*sa, f22=(ca + sa*r1/sqrt(1.- r1*r1))-1;
-
- //b = C*ft
- Double_t b00=fCyy*f00, b02=fCyy*f20+fCcy*f24+fCey*f22;
- Double_t b10=fCzy*f00, b12=fCzy*f20+fCcz*f24+fCez*f22;
- Double_t b20=fCey*f00, b22=fCey*f20+fCce*f24+fCee*f22;
- Double_t b30=fCty*f00, b32=fCty*f20+fCct*f24+fCte*f22;
- Double_t b40=fCcy*f00, b42=fCcy*f20+fCcc*f24+fCce*f22;
+ Double_t r2 = fC*fX - fE;
+ if (TMath::Abs(r2) >= 0.9) {
+ Int_t n = GetNumberOfClusters();
+ if (n > 4) {
+ AliError(Form("Rotation failed N = %d !\n",n));
+ }
+ return 0;
+ }
- //a = f*b = f*C*ft
- Double_t a00=f00*b00, a02=f00*b02, a22=f20*b02+f24*b42+f22*b22;
+ if ((r2*r2) > 1.0) {
+ return 0;
+ }
+ Double_t y0 = fY + TMath::Sqrt(1.0 - r2*r2) / fC;
+ if ((fY-y0)*fC >= 0.0) {
+ Int_t n = GetNumberOfClusters();
+ if (n > 4) {
+ AliError(Form("Rotation failed N = %d !\n",n));
+ }
+ return 0;
+ }
- //F*C*Ft = C + (a + b + bt)
- fCyy += a00 + 2*b00;
+ // f = F - 1
+ Double_t f00 = ca-1.0;
+ Double_t f24 = (y1 - r1*x1/TMath::Sqrt(1.0 - r1*r1)) * sa;
+ Double_t f20 = fC*sa;
+ Double_t f22 = (ca + sa*r1/TMath::Sqrt(1.0 - r1*r1)) - 1.0;
+
+ // b = C*ft
+ Double_t b00 = fCyy*f00;
+ Double_t b02 = fCyy*f20 + fCcy*f24 + fCey*f22;
+ Double_t b10 = fCzy*f00;
+ Double_t b12 = fCzy*f20 + fCcz*f24 + fCez*f22;
+ Double_t b20 = fCey*f00;
+ Double_t b22 = fCey*f20 + fCce*f24 + fCee*f22;
+ Double_t b30 = fCty*f00;
+ Double_t b32 = fCty*f20 + fCct*f24 + fCte*f22;
+ Double_t b40 = fCcy*f00;
+ Double_t b42 = fCcy*f20 + fCcc*f24 + fCce*f22;
+
+ // a = f*b = f*C*ft
+ Double_t a00 = f00*b00;
+ Double_t a02 = f00*b02;
+ Double_t a22 = f20*b02 + f24*b42 + f22*b22;
+
+ // F*C*Ft = C + (a + b + bt)
+ fCyy += a00 + 2.0*b00;
fCzy += b10;
- fCey += a02+b20+b02;
+ fCey += a02 + b20 + b02;
fCty += b30;
fCcy += b40;
fCez += b12;
fCte += b32;
- fCee += a22 + 2*b22;
+ fCee += a22 + 2.0*b22;
fCce += b42;
return 1;
//
Bool_t fNoTilt = kTRUE;
- if(TMath::Abs(h01) > 0.003) fNoTilt = kFALSE;
- Double_t chi2, dy, r00, r01, r11;
+ if (TMath::Abs(h01) > 0.003) {
+ fNoTilt = kFALSE;
+ }
+
+ Double_t chi2;
+ Double_t dy;
+ Double_t r00;
+ Double_t r01;
+ Double_t r11;
+
+ if (fNoTilt) {
+
+ dy = c->GetY() - fY;
+ r00 = c->GetSigmaY2();
+ chi2 = (dy*dy) / r00;
- if(fNoTilt) {
- dy=c->GetY() - fY;
- r00=c->GetSigmaY2();
- chi2 = (dy*dy)/r00;
}
else {
- Double_t padlength = TMath::Sqrt(c->GetSigmaZ2()*12);
- //
- r00=c->GetSigmaY2(); r01=0.; r11=c->GetSigmaZ2();
- r00+=fCyy; r01+=fCzy; r11+=fCzz;
- Double_t det=r00*r11 - r01*r01;
+ Double_t padlength = TMath::Sqrt(c->GetSigmaZ2() * 12.0);
+
+ r00 = c->GetSigmaY2();
+ r01 = 0.0;
+ r11 = c->GetSigmaZ2();
+ r00 += fCyy;
+ r01 += fCzy;
+ r11 += fCzz;
+
+ Double_t det = r00*r11 - r01*r01;
if (TMath::Abs(det) < 1.e-10) {
- Int_t n=GetNumberOfClusters();
- if (n>4) cerr<<n<<" AliTRDtrack warning: Singular matrix !\n";
+ Int_t n = GetNumberOfClusters();
+ if (n > 4) {
+ AliError(Form("Singular matrix N = %d!\n",n));
+ }
return 1e10;
}
- Double_t tmp=r00; r00=r11; r11=tmp; r01=-r01;
- Double_t dy=c->GetY() - fY, dz=c->GetZ() - fZ;
+
+ Double_t tmp = r00;
+ r00 = r11;
+ r11 = tmp;
+ r01 = -r01;
+ Double_t dy = c->GetY() - fY;
+ Double_t dz = c->GetZ() - fZ;
Double_t tiltdz = dz;
- if (TMath::Abs(tiltdz)>padlength/2.) {
- tiltdz = TMath::Sign(padlength/2,dz);
+ if (TMath::Abs(tiltdz) > padlength/2.0) {
+ tiltdz = TMath::Sign(padlength/2.0,dz);
}
- // dy=dy+h01*dz;
- dy=dy+h01*tiltdz;
+ dy = dy + h01*tiltdz;
+
+ chi2 = (dy*r00*dy + 2*r01*dy*dz + dz*r11*dz) / det;
- chi2 = (dy*r00*dy + 2*r01*dy*dz + dz*r11*dz)/det;
}
return chi2;
//_________________________________________________________________________
void AliTRDtrack::GetPxPyPz(Double_t& px, Double_t& py, Double_t& pz) const
{
+ //
// Returns reconstructed track momentum in the global system.
+ //
- Double_t pt=TMath::Abs(GetPt()); // GeV/c
- Double_t r=fC*fX-fE;
+ Double_t pt = TMath::Abs(GetPt());
+ Double_t r = fC*fX - fE;
Double_t y0;
- if(r > 1) { py = pt; px = 0; }
- else if(r < -1) { py = -pt; px = 0; }
+ if (r > 1) {
+ py = pt;
+ px = 0.0;
+ }
+ else if (r < -1) {
+ py = -pt;
+ px = 0.0;
+ }
else {
- y0=fY + sqrt(1.- r*r)/fC;
- px=-pt*(fY-y0)*fC; //cos(phi);
- py=-pt*(fE-fX*fC); //sin(phi);
+ y0 = fY + TMath::Sqrt(1.0 - r*r) / fC;
+ px = -pt * (fY - y0) * fC; //cos(phi);
+ py = -pt * (fE - fX*fC); //sin(phi);
}
- pz=pt*fT;
- Double_t tmp=px*TMath::Cos(fAlpha) - py*TMath::Sin(fAlpha);
- py=px*TMath::Sin(fAlpha) + py*TMath::Cos(fAlpha);
- px=tmp;
+
+ pz = pt*fT;
+ Double_t tmp = px * TMath::Cos(fAlpha)
+ - py * TMath::Sin(fAlpha);
+ py = px * TMath::Sin(fAlpha)
+ + py * TMath::Cos(fAlpha);
+ px = tmp;
}
//_________________________________________________________________________
void AliTRDtrack::GetGlobalXYZ(Double_t& x, Double_t& y, Double_t& z) const
{
+ //
// Returns reconstructed track coordinates in the global system.
+ //
- x = fX; y = fY; z = fZ;
- Double_t tmp=x*TMath::Cos(fAlpha) - y*TMath::Sin(fAlpha);
- y=x*TMath::Sin(fAlpha) + y*TMath::Cos(fAlpha);
- x=tmp;
+ x = fX;
+ y = fY;
+ z = fZ
+;
+ Double_t tmp = x * TMath::Cos(fAlpha)
+ - y * TMath::Sin(fAlpha);
+ y = x * TMath::Sin(fAlpha)
+ + y * TMath::Cos(fAlpha);
+ x = tmp;
}
// Resets covariance matrix
//
- fCyy*=10.;
- fCzy=0.; fCzz*=10.;
- fCey=0.; fCez=0.; fCee*=10.;
- fCty=0.; fCtz=0.; fCte=0.; fCtt*=10.;
- fCcy=0.; fCcz=0.; fCce=0.; fCct=0.; fCcc*=10.;
+ fCyy *= 10.0;
+ fCzy = 0.0; fCzz *= 10.0;
+ fCey = 0.0; fCez = 0.0; fCee *= 10.0;
+ fCty = 0.0; fCtz = 0.0; fCte = 0.0; fCtt *= 10.0;
+ fCcy = 0.0; fCcz = 0.0; fCce = 0.0; fCct = 0.0; fCcc *= 10.0;
}
// Resets covariance matrix
//
- fCyy*=mult;
- fCzy*=0.; fCzz*=1.;
- fCey*=0.; fCez*=0.; fCee*=mult;
- fCty*=0.; fCtz*=0.; fCte*=0.; fCtt*=1.;
- fCcy*=0.; fCcz*=0.; fCce*=0.; fCct*=0.; fCcc*=mult;
+ fCyy *= mult;
+ fCzy *= 0.0; fCzz *= 1.0;
+ fCey *= 0.0; fCez *= 0.0; fCee *= mult;
+ fCty *= 0.0; fCtz *= 0.0; fCte *= 0.0; fCtt *= 1.0;
+ fCcy *= 0.0; fCcz *= 0.0; fCce *= 0.0; fCct *= 0.0; fCcc *= mult;
}
// Creates a backup track
//
- if (fBackupTrack) delete fBackupTrack;
+ if (fBackupTrack) {
+ delete fBackupTrack;
+ }
+
fBackupTrack = new AliTRDtrack(*this);
}
{
//
// Find prolongation at given x
- // return 0 if not exist
+ // Return 0 if it does not exist
+ //
- Double_t c1=fC*fX - fE;
- if (TMath::Abs(c1)>1.) return 0;
- Double_t r1=TMath::Sqrt(1.- c1*c1);
- Double_t c2=fC*xk - fE;
- if (TMath::Abs(c2)>1.) return 0;
- Double_t r2=TMath::Sqrt(1.- c2*c2);
- y =fY + (xk-fX)*(c1+c2)/(r1+r2);
- z =fZ + (xk-fX)*(c1+c2)/(c1*r2 + c2*r1)*fT;
+ Double_t c1 = fC*fX - fE;
+ if (TMath::Abs(c1) > 1.0) {
+ return 0;
+ }
+
+ Double_t r1 = TMath::Sqrt(1.0 - c1*c1);
+ Double_t c2 = fC*xk - fE;
+ if (TMath::Abs(c2) > 1.0) {
+ return 0;
+ }
+
+ Double_t r2 = TMath::Sqrt(1.0 - c2*c2);
+ y = fY + (xk-fX)*(c1+c2)/(r1+r2);
+ z = fZ + (xk-fX)*(c1+c2)/(c1*r2 + c2*r1)*fT;
return 1;
}
//_____________________________________________________________________________
-Int_t AliTRDtrack::PropagateToX(Double_t xr, Double_t step)
+Int_t AliTRDtrack::PropagateToX(Double_t xr, Double_t step)
{
//
- // Propagate track to given x position
- // works inside of the 20 degree segmentation (local cooordinate frame for TRD , TPC, TOF)
+ // Propagate track to a given x position
+ // Works inside of the 20 degree segmentation
+ // (local cooordinate frame for TRD , TPC, TOF)
//
- // material budget from geo manager
- //
- Double_t xyz0[3], xyz1[3],y,z;
- const Double_t kAlphac = TMath::Pi()/9.;
- const Double_t kTalphac = TMath::Tan(kAlphac*0.5);
- // critical alpha - cross sector indication
+ // The material budget is taken from the geo manager
//
- Double_t dir = (fX>xr) ? -1.:1.;
- // direction +-
- for (Double_t x=fX+dir*step;dir*x<dir*xr;x+=dir*step){
- //
+
+ Double_t xyz0[3];
+ Double_t xyz1[3];
+ Double_t y;
+ Double_t z;
+
+ // Critical alpha - cross sector indication
+ const Double_t kAlphac = TMath::Pi()/9.0;
+ const Double_t kTalphac = TMath::Tan(kAlphac*0.5);
+
+ // Direction +-
+ Double_t dir = (fX > xr) ? -1.0 : 1.0;
+
+ for (Double_t x = fX + dir*step; dir*x < dir*xr; x += dir*step) {
+
GetGlobalXYZ(xyz0[0],xyz0[1],xyz0[2]);
GetProlongation(x,y,z);
- xyz1[0] = x*TMath::Cos(fAlpha)+y*TMath::Sin(fAlpha);
- xyz1[1] = x*TMath::Sin(fAlpha)-y*TMath::Cos(fAlpha);
+ xyz1[0] = x * TMath::Cos(fAlpha) + y * TMath::Sin(fAlpha);
+ xyz1[1] = x * TMath::Sin(fAlpha) - y * TMath::Cos(fAlpha);
xyz1[2] = z;
Double_t param[7];
AliKalmanTrack::MeanMaterialBudget(xyz0,xyz1,param);
- //
- if (param[0]>0&¶m[1]>0) PropagateTo(x,param[1],param[0]);
- if (fY>fX*kTalphac){
+
+ if ((param[0] > 0) &&
+ (param[1] > 0)) {
+ PropagateTo(x,param[1],param[0]);
+ }
+ if (fY > fX*kTalphac) {
Rotate(-kAlphac);
}
- if (fY<-fX*kTalphac){
+ if (fY < -fX*kTalphac) {
Rotate(kAlphac);
}
+
}
- //
+
PropagateTo(xr);
return 0;
}
//_____________________________________________________________________________
-Int_t AliTRDtrack::PropagateToR(Double_t r,Double_t step)
+Int_t AliTRDtrack::PropagateToR(Double_t r,Double_t step)
{
//
- // propagate track to the radial position
- // rotation always connected to the last track position
- //
- Double_t xyz0[3], xyz1[3],y,z;
- Double_t radius = TMath::Sqrt(fX*fX+fY*fY);
- Double_t dir = (radius>r) ? -1.:1.; // direction +-
+ // Propagate a track to a given radial position
+ // The rotation is always connected to the last track position
//
- for (Double_t x=radius+dir*step;dir*x<dir*r;x+=dir*step){
+
+ Double_t xyz0[3];
+ Double_t xyz1[3];
+ Double_t y;
+ Double_t z;
+
+ // Direction +-
+ Double_t radius = TMath::Sqrt(fX*fX + fY*fY);
+ Double_t dir = (radius > r) ? -1.0 : 1.0;
+
+ for (Double_t x = radius + dir*step; dir*x < dir*r; x += dir*step) {
GetGlobalXYZ(xyz0[0],xyz0[1],xyz0[2]);
Double_t alpha = TMath::ATan2(xyz0[1],xyz0[0]);
Rotate(alpha,kTRUE);
GetGlobalXYZ(xyz0[0],xyz0[1],xyz0[2]);
GetProlongation(x,y,z);
- xyz1[0] = x*TMath::Cos(alpha)+y*TMath::Sin(alpha);
- xyz1[1] = x*TMath::Sin(alpha)-y*TMath::Cos(alpha);
+ xyz1[0] = x * TMath::Cos(alpha) + y * TMath::Sin(alpha);
+ xyz1[1] = x * TMath::Sin(alpha) - y * TMath::Cos(alpha);
xyz1[2] = z;
Double_t param[7];
AliKalmanTrack::MeanMaterialBudget(xyz0,xyz1,param);
- if (param[1]<=0) param[1] =100000000;
+ if (param[1] <= 0.0) {
+ param[1] = 100000000.0;
+ }
PropagateTo(x,param[1],param[0]);
}
+
GetGlobalXYZ(xyz0[0],xyz0[1],xyz0[2]);
Double_t alpha = TMath::ATan2(xyz0[1],xyz0[0]);
Rotate(alpha,kTRUE);
GetGlobalXYZ(xyz0[0],xyz0[1],xyz0[2]);
GetProlongation(r,y,z);
- xyz1[0] = r*TMath::Cos(alpha)+y*TMath::Sin(alpha);
- xyz1[1] = r*TMath::Sin(alpha)-y*TMath::Cos(alpha);
+ xyz1[0] = r * TMath::Cos(alpha) + y * TMath::Sin(alpha);
+ xyz1[1] = r * TMath::Sin(alpha) - y * TMath::Cos(alpha);
xyz1[2] = z;
Double_t param[7];
AliKalmanTrack::MeanMaterialBudget(xyz0,xyz1,param);
- //
- if (param[1]<=0) param[1] =100000000;
+
+ if (param[1] <= 0.0) {
+ param[1] = 100000000.0;
+ }
PropagateTo(r,param[1],param[0]);
return 0;
}
//_____________________________________________________________________________
-Double_t AliTRDtrack::Get1Pt() const
+Double_t AliTRDtrack::Get1Pt() const
{
- //--------------------------------------------------------------
+ //
// Returns the inverse Pt (1/GeV/c)
// (or 1/"most probable pt", if the field is too weak)
- //--------------------------------------------------------------
- if (TMath::Abs(GetLocalConvConst()) > kVeryBigConvConst)
- return 1./kMostProbableMomentum/TMath::Sqrt(1.+ GetTgl()*GetTgl());
- return (TMath::Sign(1e-9,fC) + fC)*GetLocalConvConst();
+ //
+
+ if (TMath::Abs(GetLocalConvConst()) > kVeryBigConvConst) {
+ return 1.0 / kMostProbableMomentum
+ / TMath::Sqrt(1.0 + GetTgl()*GetTgl());
+ }
+
+ return (TMath::Sign(1.0e-9,fC) + fC) * GetLocalConvConst();
+
}
//_____________________________________________________________________________
-Double_t AliTRDtrack::GetP() const
+Double_t AliTRDtrack::GetP() const
{
//
// Returns the total momentum
//
- return TMath::Abs(GetPt())*sqrt(1.+GetTgl()*GetTgl());
+ return TMath::Abs(GetPt()) * TMath::Sqrt(1.0 + GetTgl()*GetTgl());
}
Double_t r1 = TMath::Sqrt(1.0 - c1*c1);
Double_t c2 = fC*xk - fE;
Double_t r2 = TMath::Sqrt(1.0- c2*c2);
+
return fY + (xk-fX)*(c1+c2)/(r1+r2);
}
Double_t s = GetSnp();
Double_t t = GetTgl();
- q *= TMath::Sqrt((1-s*s)/(1+t*t));
+
+ q *= TMath::Sqrt((1.0 - s*s) / (1.0 + t*t));
fdQdl[i] = q;
}
Double_t s = GetSnp();
Double_t t = GetTgl();
- q*= TMath::Sqrt((1-s*s)/(1+t*t));
+
+ q*= TMath::Sqrt((1.0 - s*s) / (1.0 + t*t));
fdQdl[fNdedx] = q;
fNdedx++;
//_____________________________________________________________________________
void AliTRDtrack::GetXYZ(Float_t r[3]) const
{
-
- //---------------------------------------------------------------------
+ //
// Returns the position of the track in the global coord. system
- //---------------------------------------------------------------------
+ //
Double_t cs = TMath::Cos(fAlpha);
Double_t sn = TMath::Sin(fAlpha);
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice */
-#include <AliKalmanTrack.h>
-#include <AliTRDtracklet.h>
-
-class AliTRDcluster;
-class AliTPCtrack;
-class AliESDtrack;
-class AliTrackReference;
-
-const unsigned kMAXCLUSTERSPERTRACK = 210;
+/* $Id$ */
///////////////////////////////////////////////////////////////////////////////
// //
// //
///////////////////////////////////////////////////////////////////////////////
+#include "AliKalmanTrack.h"
+
+#include "AliTRDtracklet.h"
+
+class AliESDtrack;
+class AliTrackReference;
+class AliTPCtrack;
+
+class AliTRDcluster;
+
+const unsigned kMAXCLUSTERSPERTRACK = 210;
+
class AliTRDtrack : public AliKalmanTrack {
enum { kNdet = 540
- , kNstacks = 90
- , kNplane = 6
- , kNcham = 5
- , kNsect = 18
- , kNslice = 3
- , kNtimeBins = 22 };
+ , kNstacks = 90
+ , kNplane = 6
+ , kNcham = 5
+ , kNsect = 18
+ , kNslice = 3
+ , kNtimeBins = 22 };
friend class AliTRDtracker;
public:
AliTRDtrack();
- AliTRDtrack(const AliTRDcluster *c, UInt_t index, const Double_t xx[5],
- const Double_t cc[15], Double_t xr, Double_t alpha);
- AliTRDtrack(const AliTRDtrack& t);
- AliTRDtrack(const AliKalmanTrack& t, Double_t alpha);
- AliTRDtrack(const AliESDtrack& t);
- ~AliTRDtrack();
-
- AliTRDtrack &operator=(const AliTRDtrack &t);
-
- //static AliTRDtrack* MakeTrack(const AliTrackReference *ref, Double_t mass);
- Int_t Compare(const TObject *o) const;
- void CookdEdx(Double_t low=0.05, Double_t up=0.7);
- Float_t StatusForTOF();
- Double_t GetAlpha() const { return fAlpha; }
- Int_t GetSector() const;
- Double_t GetC() const { return fC; }
- Int_t GetClusterIndex(Int_t i) const { return fIndex[i]; }
- Float_t GetClusterdQdl(Int_t i) const { return fdQdl[i]; }
- void GetCovariance(Double_t cov[15]) const;
- Double_t GetdEdx() const { return fdEdx; }
- Double_t GetPIDsignal() const { return GetdEdx(); }
- Float_t GetPIDsignals(Int_t iPlane, Int_t iSlice) const
+ AliTRDtrack(const AliTRDcluster *c, UInt_t index, const Double_t xx[5]
+ , const Double_t cc[15], Double_t xr, Double_t alpha);
+ AliTRDtrack(const AliTRDtrack &t);
+ AliTRDtrack(const AliKalmanTrack &t, Double_t alpha);
+ AliTRDtrack(const AliESDtrack &t);
+ virtual ~AliTRDtrack();
+ AliTRDtrack &operator=(const AliTRDtrack &t);
+
+ Int_t Compare(const TObject *o) const;
+ void CookdEdx(Double_t low = 0.05, Double_t up = 0.7);
+ Float_t StatusForTOF();
+
+ Double_t GetAlpha() const { return fAlpha; }
+ Int_t GetSector() const;
+ Double_t GetC() const { return fC; }
+ Int_t GetClusterIndex(Int_t i) const { return fIndex[i]; }
+ Float_t GetClusterdQdl(Int_t i) const { return fdQdl[i]; }
+ void GetCovariance(Double_t cov[15]) const;
+ Double_t GetdEdx() const { return fdEdx; }
+ Double_t GetPIDsignal() const { return GetdEdx(); }
+ Float_t GetPIDsignals(Int_t iPlane, Int_t iSlice) const
{ return fdEdxPlane[iPlane][iSlice]; }
- Int_t GetPIDTimBin(Int_t i) const { return fTimBinPlane[i];}
- Double_t GetEta() const { return fE; }
-
- void GetExternalCovariance(Double_t cov[15]) const;
- void GetExternalParameters(Double_t& xr, Double_t x[5]) const;
-
- Double_t GetLikelihoodElectron() const { return fLhElectron; }
- Double_t Get1Pt() const;
- Double_t GetP() const;
- Double_t GetPredictedChi2(const AliTRDcluster* c, Double_t h01) const;
- Double_t GetPt() const { return 1.0 / Get1Pt(); }
- void GetPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const;
- void GetGlobalXYZ(Double_t &x, Double_t &y, Double_t &z) const;
- Int_t GetSeedLabel() const { return fSeedLab; }
- Double_t GetSigmaC2() const { return fCcc; }
- Double_t GetSigmaTgl2() const { return fCtt; }
- Double_t GetSigmaY2() const { return fCyy; }
- Double_t GetSigmaZ2() const { return fCzz; }
- Double_t GetSnp() const { return fX*fC - fE; }
- Double_t GetTgl() const { return fT; }
- Double_t GetX() const { return fX; }
- Double_t GetY() const { return fY; }
- Double_t GetZ() const { return fZ; }
- Int_t* GetBackupIndexes() { return fIndexBackup; }
- Int_t* GetIndexes() { return fIndex; }
-
- Double_t GetYat(Double_t xk) const;
- Int_t GetProlongation(Double_t xk, Double_t &y, Double_t &z);
-
- void SetStop(Bool_t stop) { fStopped = stop; }
- Bool_t GetStop() const { return fStopped; }
-
- Int_t PropagateTo(Double_t xr, Double_t x0=8.72, Double_t rho=5.86e-3);
- Int_t PropagateToX(Double_t xr, Double_t step);
- Int_t PropagateToR(Double_t xr, Double_t step);
- void ResetCovariance();
- void ResetCovariance(Float_t mult);
- void ResetClusters() { SetChi2(0.); SetNumberOfClusters(0); }
- Int_t Rotate(Double_t angle, Bool_t absolute=kFALSE);
-
- void SetdEdx(Float_t dedx) { fdEdx = dedx; }
- void SetPIDsignals(Float_t dedx, Int_t iPlane, Int_t iSlice)
+ Int_t GetPIDTimBin(Int_t i) const { return fTimBinPlane[i]; }
+ Double_t GetEta() const { return fE; }
+ void GetExternalCovariance(Double_t cov[15]) const;
+ void GetExternalParameters(Double_t &xr, Double_t x[5]) const;
+ Double_t GetLikelihoodElectron() const { return fLhElectron; }
+ Double_t Get1Pt() const;
+ Double_t GetP() const;
+ Double_t GetPredictedChi2(const AliTRDcluster *c, Double_t h01) const;
+ Double_t GetPt() const { return 1.0 / Get1Pt(); }
+ void GetPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const;
+ void GetGlobalXYZ(Double_t &x, Double_t &y, Double_t &z) const;
+ Int_t GetSeedLabel() const { return fSeedLab; }
+ Double_t GetSigmaC2() const { return fCcc; }
+ Double_t GetSigmaTgl2() const { return fCtt; }
+ Double_t GetSigmaY2() const { return fCyy; }
+ Double_t GetSigmaZ2() const { return fCzz; }
+ Double_t GetSnp() const { return fX * fC - fE; }
+ Double_t GetTgl() const { return fT; }
+ Double_t GetX() const { return fX; }
+ Double_t GetY() const { return fY; }
+ Double_t GetZ() const { return fZ; }
+ Int_t *GetBackupIndexes() { return fIndexBackup; }
+ Int_t *GetIndexes() { return fIndex; }
+ Double_t GetYat(Double_t xk) const;
+ Int_t GetProlongation(Double_t xk, Double_t &y, Double_t &z);
+ Int_t GetNWrong() const { return fNWrong; }
+ Int_t GetNRotate() const { return fNRotate; }
+ Int_t GetNCross() const { return fNCross; }
+ Bool_t GetStop() const { return fStopped; }
+
+ void SetdEdx(Float_t dedx) { fdEdx = dedx; }
+ void SetPIDsignals(Float_t dedx, Int_t iPlane, Int_t iSlice)
{ fdEdxPlane[iPlane][iSlice] = dedx; }
- void SetPIDTimBin(Int_t timbin, Int_t i) { fTimBinPlane[i] = timbin; }
- void SetLikelihoodElectron(Float_t l) { fLhElectron = l; }
-
- void SetSampledEdx(Float_t q, Int_t i);
- void SetSampledEdx(Float_t q);
- void SetSeedLabel(Int_t lab) { fSeedLab = lab; }
-
- Int_t Update(const AliTRDcluster* c, Double_t chi2, UInt_t i, Double_t h01);
- Int_t UpdateMI(const AliTRDcluster* c, Double_t chi2, UInt_t i, Double_t h01, Int_t plane);
- Int_t UpdateMI(const AliTRDtracklet & tracklet);
-
- void AddNWrong() { fNWrong++; }
-
- Int_t GetNWrong() const { return fNWrong; }
- Int_t GetNRotate() const { return fNRotate; }
- Int_t GetNCross() const { return fNCross; }
- void IncCross() { fNCross++; if (fBackupTrack) fBackupTrack->IncCross(); }
- AliTRDtrack* GetBackupTrack() { return fBackupTrack; }
- void MakeBackupTrack();
+ void SetPIDTimBin(Int_t timbin, Int_t i) { fTimBinPlane[i] = timbin; }
+ void SetLikelihoodElectron(Float_t l) { fLhElectron = l; }
+ void SetSampledEdx(Float_t q, Int_t i);
+ void SetSampledEdx(Float_t q);
+ void SetSeedLabel(Int_t lab) { fSeedLab = lab; }
+ void SetStop(Bool_t stop) { fStopped = stop; }
+
+ Int_t PropagateTo(Double_t xr, Double_t x0 = 8.72, Double_t rho = 5.86e-3);
+ Int_t PropagateToX(Double_t xr, Double_t step);
+ Int_t PropagateToR(Double_t xr, Double_t step);
+ void ResetCovariance();
+ void ResetCovariance(Float_t mult);
+ void ResetClusters() { SetChi2(0.);
+ SetNumberOfClusters(0); }
+ Int_t Rotate(Double_t angle, Bool_t absolute = kFALSE);
+ Int_t Update(const AliTRDcluster *c, Double_t chi2, UInt_t i, Double_t h01);
+ Int_t UpdateMI(const AliTRDcluster *c, Double_t chi2, UInt_t i, Double_t h01, Int_t plane);
+ Int_t UpdateMI(const AliTRDtracklet &tracklet);
+ void AddNWrong() { fNWrong++; }
+ void IncCross() { fNCross++;
+ if (fBackupTrack)
+ fBackupTrack->IncCross(); }
+ AliTRDtrack *GetBackupTrack() { return fBackupTrack; }
+ void MakeBackupTrack();
protected:
- inline void GetXYZ(Float_t r[3]) const;
-
- Double_t GetPredictedChi2(const AliCluster*/*c*/) const { return 0.0; }
- Int_t Update(const AliCluster*/*c*/, Double_t /*chi2*/, UInt_t /*i*/) { return 0; }
-
- Int_t fSeedLab; // track label taken from seeding
- Float_t fdEdx; // dE/dx
- Float_t fdEdxT; // dE/dx - truncated mean
- Float_t fDE; // integrated delta energy
- Float_t fdEdxPlane[kNplane][kNslice]; // dE/dx from all 6 planes in 3 slices each
- Int_t fTimBinPlane[kNplane]; // time bin of Max cluster from all 6 planes
-
- Double_t fAlpha; // rotation angle
- Double_t fX; // running local X-coordinate of the track (time bin)
- Bool_t fStopped; // track stop indication
-
- Double_t fY; // Y-coordinate of the track
- Double_t fZ; // Z-coordinate of the track
- Double_t fE; // C*x0
- Double_t fT; // tangent of the track momentum dip angle
- Double_t fC; // track curvature
-
- Double_t fCyy; // covariance
- Double_t fCzy, fCzz; // matrix
- Double_t fCey, fCez, fCee; // of the
- Double_t fCty, fCtz, fCte, fCtt; // track
- Double_t fCcy, fCcz, fCce, fCct, fCcc; // parameters
+ inline void GetXYZ(Float_t r[3]) const;
+ Double_t GetPredictedChi2(const AliCluster*/*c*/) const { return 0.0; }
+ Int_t Update(const AliCluster*/*c*/, Double_t /*chi2*/, UInt_t /*i*/) { return 0; }
+
+ Int_t fSeedLab; // Track label taken from seeding
+ Float_t fdEdx; // dE/dx
+ Float_t fdEdxT; // dE/dx - truncated mean
+ Float_t fDE; // Integrated delta energy
+ Float_t fdEdxPlane[kNplane][kNslice]; // dE/dx from all 6 planes in 3 slices each
+ Int_t fTimBinPlane[kNplane]; // Time bin of Max cluster from all 6 planes
+
+ Double_t fAlpha; // Rotation angle
+ Double_t fX; // Running local X-coordinate of the track (time bin)
+ Bool_t fStopped; // Track stop indication
+
+ Double_t fY; // Y-coordinate of the track
+ Double_t fZ; // Z-coordinate of the track
+ Double_t fE; // C*x0
+ Double_t fT; // Tangent of the track momentum dip angle
+ Double_t fC; // Track curvature
+
+ Double_t fCyy; // Covariance
+ Double_t fCzy, fCzz; // matrix
+ Double_t fCey, fCez, fCee; // of the
+ Double_t fCty, fCtz, fCte, fCtt; // track
+ Double_t fCcy, fCcz, fCce, fCct, fCcc; // parameters
- Int_t fIndex[kMAXCLUSTERSPERTRACK]; // global indexes of clusters
- Int_t fIndexBackup[kMAXCLUSTERSPERTRACK]; // backup indexes of clusters - used in iterations
- Float_t fdQdl[kMAXCLUSTERSPERTRACK]; // cluster amplitudes corrected for track angles
+ Int_t fIndex[kMAXCLUSTERSPERTRACK]; // Global indexes of clusters
+ Int_t fIndexBackup[kMAXCLUSTERSPERTRACK]; // Backup indexes of clusters - used in iterations
+ Float_t fdQdl[kMAXCLUSTERSPERTRACK]; // Cluster amplitudes corrected for track angles
- Float_t fLhElectron; // Likelihood to be an electron
- Int_t fNWrong; // number of wrong clusters
- Int_t fNRotate; // number of rotation
- Int_t fNCross; // number of the cross materials
- Int_t fNExpected; // expected number of cluster
- Int_t fNLast; // number of clusters in last 2 layers
- Int_t fNExpectedLast; // number of expected clusters on last 2 layers
- Int_t fNdedx; // number of clusters for dEdx measurment
- Float_t fChi2Last; // chi2 in the last 2 layers
- AliTRDtracklet fTracklets[6]; // tracklets
- Float_t fBudget[3]; // integrated material budget
- AliTRDtrack *fBackupTrack; //! backup track
-
- ClassDef(AliTRDtrack,5) // TRD reconstructed tracks
+ Float_t fLhElectron; // Likelihood to be an electron
+ Int_t fNWrong; // Number of wrong clusters
+ Int_t fNRotate; // Number of rotation
+ Int_t fNCross; // Number of the cross materials
+ Int_t fNExpected; // Expected number of cluster
+ Int_t fNLast; // Number of clusters in last 2 layers
+ Int_t fNExpectedLast; // Number of expected clusters on last 2 layers
+ Int_t fNdedx; // Number of clusters for dEdx measurment
+ Float_t fChi2Last; // Chi2 in the last 2 layers
+ AliTRDtracklet fTracklets[6]; // Tracklets
+ Float_t fBudget[3]; // Integrated material budget
+ AliTRDtrack *fBackupTrack; //! Backup track
+
+ ClassDef(AliTRDtrack,5) // TRD reconstructed tracks
};
-inline
-void AliTRDtrack::GetExternalParameters(Double_t& xr, Double_t x[5]) const
+//_____________________________________________________________________________
+inline void AliTRDtrack::GetExternalParameters(Double_t &xr, Double_t x[5]) const
{
//
// This function returns external TRD track representation
//
+
xr = fX;
- x[0] = GetY(); x[1] = GetZ(); x[2] = GetSnp(); x[3] = GetTgl();
- x[4] = (TMath::Sign(1e-9,fC) + fC)*GetLocalConvConst();
+ x[0] = GetY();
+ x[1] = GetZ();
+ x[2] = GetSnp();
+ x[3] = GetTgl();
+ x[4] = (TMath::Sign(1e-9,fC) + fC) * GetLocalConvConst();
+
}
#endif
git://git.uio.no / u / mrichter / AliRoot.git / commitdiff