* about the suitability of this software for any purpose. It is *
* provided "as is" without express or implied warranty. *
**************************************************************************/
-#include <AliESDVertex.h>
-#include <AliITSVertexer3D.h>
-#include <AliStrLine.h>
-#include <AliVertexerTracks.h>
-#include <Riostream.h>
#include <TH3F.h>
#include <TTree.h>
-#include<TClonesArray.h>
+#include <TClonesArray.h>
+#include "AliESDVertex.h"
+#include "AliLog.h"
+#include "AliStrLine.h"
+#include "AliTracker.h"
#include "AliRunLoader.h"
#include "AliITSLoader.h"
-#include "AliITSgeom.h"
#include "AliITSDetTypeRec.h"
#include "AliITSRecPoint.h"
+#include "AliITSgeomTGeo.h"
+#include "AliVertexerTracks.h"
+#include "AliITSVertexer3D.h"
/////////////////////////////////////////////////////////////////
// this class implements a method to determine
// the 3 coordinates of the primary vertex
ClassImp(AliITSVertexer3D)
+/* $Id$ */
+
//______________________________________________________________________
AliITSVertexer3D::AliITSVertexer3D():AliITSVertexer(),
fLines(),
fZCutDiamond(0.),
fMaxZCut(0.),
fDCAcut(0.),
-fDiffPhiMax(0.) {
+fDiffPhiMax(0.),
+fMeanPSelTrk(0.),
+fMeanPtSelTrk(0.)
+{
// Default constructor
SetCoarseDiffPhiCut();
SetCoarseMaxRCut();
SetMaxZCut();
SetDCAcut();
SetDiffPhiMax();
-
+ SetMeanPSelTracks();
+ SetMeanPtSelTracks();
}
//______________________________________________________________________
fZCutDiamond(0.),
fMaxZCut(0.),
fDCAcut(0.),
-fDiffPhiMax(0.) {
+fDiffPhiMax(0.),
+fMeanPSelTrk(0.),
+fMeanPtSelTrk(0.)
+{
// Standard constructor
fLines = new TClonesArray("AliStrLine",1000);
SetCoarseDiffPhiCut();
SetMaxZCut();
SetDCAcut();
SetDiffPhiMax();
+ SetMeanPSelTracks();
+ SetMeanPtSelTracks();
}
//______________________________________________________________________
AliITSVertexer3D::~AliITSVertexer3D() {
// Destructor
- fVert3D = 0; // this object is not owned by this class
- if(fLines){
+ if(fLines){
fLines->Delete();
delete fLines;
}
}
+//______________________________________________________________________
+void AliITSVertexer3D::ResetVert3D(){
+ //
+ fVert3D.SetXv(0.);
+ fVert3D.SetYv(0.);
+ fVert3D.SetZv(0.);
+ fVert3D.SetDispersion(0.);
+ fVert3D.SetNContributors(0);
+}
//______________________________________________________________________
AliESDVertex* AliITSVertexer3D::FindVertexForCurrentEvent(Int_t evnumber){
// Defines the AliESDVertex for the current event
- if (fDebug) cout<<"\n \n FindVertexForCurrentEvent - 3D - PROCESSING EVENT "<<evnumber<<endl;
- fVert3D = 0;
+ ResetVert3D();
+ AliDebug(1,Form("FindVertexForCurrentEvent - 3D - PROCESSING EVENT %d",evnumber));
if(fLines)fLines->Clear();
Int_t nolines = FindTracklets(evnumber,0);
fCurrentVertex = 0;
if(nolines<2)return fCurrentVertex;
Int_t rc=Prepare3DVertex(0);
- if(rc==0)Find3DVertex();
- if(fVert3D){
+ if(rc==0) fVert3D=AliVertexerTracks::TrackletVertexFinder(fLines,0);
+ /* uncomment to debug
+ printf("Vertex found in first iteration:\n");
+ fVert3D.Print();
+ printf("Start second iteration\n");
+ end of debug lines */
+ if(fVert3D.GetNContributors()>0){
if(fLines) fLines->Delete();
nolines = FindTracklets(evnumber,1);
if(nolines>=2){
rc=Prepare3DVertex(1);
- if(rc==0)Find3DVertex();
+ if(rc==0) fVert3D=AliVertexerTracks::TrackletVertexFinder(fLines,0);
}
}
-
- if(fVert3D){
- fCurrentVertex = new AliESDVertex();
+ /* uncomment to debug
+ printf("Vertex found in second iteration:\n");
+ fVert3D.Print();
+ end of debug lines */
+
+ Float_t vRadius=TMath::Sqrt(fVert3D.GetXv()*fVert3D.GetXv()+fVert3D.GetYv()*fVert3D.GetYv());
+ if(vRadius<GetPipeRadius() && fVert3D.GetNContributors()>0){
+ Double_t position[3]={fVert3D.GetXv(),fVert3D.GetYv(),fVert3D.GetZv()};
+ Double_t covmatrix[6];
+ fVert3D.GetCovMatrix(covmatrix);
+ Double_t chi2=99999.;
+ Int_t nContr=fVert3D.GetNContributors();
+ fCurrentVertex = new AliESDVertex(position,covmatrix,chi2,nContr);
fCurrentVertex->SetTitle("vertexer: 3D");
fCurrentVertex->SetName("Vertex");
- fCurrentVertex->SetXv(fVert3D->GetXv());
- fCurrentVertex->SetYv(fVert3D->GetYv());
- fCurrentVertex->SetZv(fVert3D->GetZv());
- fCurrentVertex->SetDispersion(fVert3D->GetDispersion());
- fCurrentVertex->SetNContributors(fVert3D->GetNContributors());
+ fCurrentVertex->SetDispersion(fVert3D.GetDispersion());
}
FindMultiplicity(evnumber);
return fCurrentVertex;
// The tracklets are processed in Prepare3DVertex
AliRunLoader *rl =AliRunLoader::GetRunLoader();
AliITSLoader* itsLoader = (AliITSLoader*)rl->GetLoader("ITSLoader");
- AliITSgeom* geom = itsLoader->GetITSgeom();
+ // AliITSgeom* geom = itsLoader->GetITSgeom();
itsLoader->LoadRecPoints();
rl->GetEvent(evnumber);
TTree *tR = itsLoader->TreeR();
detTypeRec.SetTreeAddressR(tR);
TClonesArray *itsRec = 0;
- // lc and gc are local and global coordinates for layer 1
- Float_t lc[3]; for(Int_t ii=0; ii<3; ii++) lc[ii]=0.;
- Float_t gc[3]; for(Int_t ii=0; ii<3; ii++) gc[ii]=0.;
+ // lc1 and gc1 are local and global coordinates for layer 1
+ // Float_t lc1[3]={0.,0.,0.};
+ Float_t gc1[3]={0.,0.,0.};
// lc2 and gc2 are local and global coordinates for layer 2
- Float_t lc2[3]; for(Int_t ii=0; ii<3; ii++) lc2[ii]=0.;
- Float_t gc2[3]; for(Int_t ii=0; ii<3; ii++) gc2[ii]=0.;
+ // Float_t lc2[3]={0.,0.,0.};
+ Float_t gc2[3]={0.,0.,0.};
itsRec = detTypeRec.RecPoints();
TBranch *branch;
Float_t deltaR=fCoarseMaxRCut;
Float_t dZmax=fZCutDiamond;
if(optCuts){
- xbeam=fVert3D->GetXv();
- ybeam=fVert3D->GetYv();
- zvert=fVert3D->GetZv();
+ xbeam=fVert3D.GetXv();
+ ybeam=fVert3D.GetYv();
+ zvert=fVert3D.GetZv();
deltaPhi = fDiffPhiMax;
deltaR=fMaxRCut;
dZmax=fMaxZCut;
Int_t nrpL2 = 0; // number of rec points on layer 2
// By default irstL1=0 and lastL1=79
- Int_t irstL1 = geom->GetStartDet(0);
- Int_t lastL1 = geom->GetModuleIndex(2,1,1)-1;
- for(Int_t module= irstL1; module<=lastL1;module++){ // count number of recopints on layer 1
+ Int_t firstL1 = AliITSgeomTGeo::GetModuleIndex(1,1,1);
+ Int_t lastL1 = AliITSgeomTGeo::GetModuleIndex(2,1,1)-1;
+ for(Int_t module= firstL1; module<=lastL1;module++){ // count number of recopints on layer 1
branch->GetEvent(module);
nrpL1+= itsRec->GetEntries();
detTypeRec.ResetRecPoints();
}
- //By default irstL2=80 and lastL2=239
- Int_t irstL2 = geom->GetModuleIndex(2,1,1);
- Int_t lastL2 = geom->GetLastDet(0);
- for(Int_t module= irstL2; module<=lastL2;module++){ // count number of recopints on layer 2
+ //By default firstL2=80 and lastL2=239
+ Int_t firstL2 = AliITSgeomTGeo::GetModuleIndex(2,1,1);
+ Int_t lastL2 = AliITSgeomTGeo::GetModuleIndex(3,1,1)-1;
+ for(Int_t module= firstL2; module<=lastL2;module++){ // count number of recopints on layer 2
branch->GetEvent(module);
nrpL2+= itsRec->GetEntries();
detTypeRec.ResetRecPoints();
itsLoader->UnloadRecPoints();
return -1;
}
- if(fDebug) printf("RecPoints on Layer 1,2 = %d, %d\n",nrpL1,nrpL2);
+ AliDebug(1,Form("RecPoints on Layer 1,2 = %d, %d\n",nrpL1,nrpL2));
Double_t a[3]={xbeam,ybeam,0.};
Double_t b[3]={xbeam,ybeam,10.};
AliStrLine zeta(a,b,kTRUE);
+ Float_t bField=AliTracker::GetBz()/10.; //T
+ SetMeanPPtSelTracks(bField);
Int_t nolines = 0;
// Loop on modules of layer 1
- for(Int_t modul1= irstL1; modul1<=lastL1;modul1++){ // Loop on modules of layer 1
+ for(Int_t modul1= firstL1; modul1<=lastL1;modul1++){ // Loop on modules of layer 1
+ UShort_t ladder=int(modul1/4)+1; // ladders are numbered starting from 1
branch->GetEvent(modul1);
Int_t nrecp1 = itsRec->GetEntries();
TClonesArray *prpl1 = new TClonesArray("AliITSRecPoint",nrecp1);
}
detTypeRec.ResetRecPoints();
for(Int_t j=0;j<nrecp1;j++){
- AliITSRecPoint *recp = (AliITSRecPoint*)prpl1->At(j);
+ AliITSRecPoint *recp1 = (AliITSRecPoint*)prpl1->At(j);
// Local coordinates of this recpoint
- lc[0]=recp->GetDetLocalX();
- lc[2]=recp->GetDetLocalZ();
- geom->LtoG(modul1,lc,gc); // global coordinates
- Double_t phi1 = TMath::ATan2(gc[1]-ybeam,gc[0]-xbeam);
+ /*
+ lc[0]=recp1->GetDetLocalX();
+ lc[2]=recp1->GetDetLocalZ();
+ */
+ recp1->GetGlobalXYZ(gc1);
+ Double_t phi1 = TMath::ATan2(gc1[1]-ybeam,gc1[0]-xbeam);
if(phi1<0)phi1=2*TMath::Pi()+phi1;
- for(Int_t modul2= irstL2; modul2<=lastL2;modul2++){
- branch->GetEvent(modul2);
- Int_t nrecp2 = itsRec->GetEntries();
- for(Int_t j2=0;j2<nrecp2;j2++){
- recp = (AliITSRecPoint*)itsRec->At(j2);
- lc2[0]=recp->GetDetLocalX();
- lc2[2]=recp->GetDetLocalZ();
- geom->LtoG(modul2,lc2,gc2);
- Double_t phi2 = TMath::ATan2(gc2[1]-ybeam,gc2[0]-xbeam);
- if(phi2<0)phi2=2*TMath::Pi()+phi2;
- Double_t diff = TMath::Abs(phi2-phi1);
- if(diff>TMath::Pi())diff=2.*TMath::Pi()-diff;
- if(diff>deltaPhi)continue;
- AliStrLine line(gc,gc2,kTRUE);
- Double_t cp[3];
- Int_t retcode = line.Cross(&zeta,cp);
- if(retcode<0)continue;
- Double_t dca = line.GetDCA(&zeta);
- if(dca<0.) continue;
- if(dca>deltaR)continue;
- Double_t deltaZ=cp[2]-zvert;
- if(TMath::Abs(deltaZ)>dZmax)continue;
- MakeTracklet(gc,gc2,nolines);
+ for(Int_t ladl2=0 ; ladl2<fLadOnLay2*2+1;ladl2++){
+ for(Int_t k=0;k<4;k++){
+ Int_t ladmod=fLadders[ladder-1]+ladl2;
+ if(ladmod>AliITSgeomTGeo::GetNLadders(2)) ladmod=ladmod-AliITSgeomTGeo::GetNLadders(2);
+ Int_t modul2=AliITSgeomTGeo::GetModuleIndex(2,ladmod,k+1);
+ branch->GetEvent(modul2);
+ Int_t nrecp2 = itsRec->GetEntries();
+ for(Int_t j2=0;j2<nrecp2;j2++){
+ AliITSRecPoint *recp2 = (AliITSRecPoint*)itsRec->At(j2);
+ /*
+ lc2[0]=recp2->GetDetLocalX();
+ lc2[2]=recp2->GetDetLocalZ();
+ */
+ recp2->GetGlobalXYZ(gc2);
+ Double_t phi2 = TMath::ATan2(gc2[1]-ybeam,gc2[0]-xbeam);
+ if(phi2<0)phi2=2*TMath::Pi()+phi2;
+ Double_t diff = TMath::Abs(phi2-phi1);
+ if(diff>TMath::Pi())diff=2.*TMath::Pi()-diff;
+ if(diff>deltaPhi)continue;
+ AliStrLine line(gc1,gc2,kTRUE);
+ Double_t cp[3];
+ Int_t retcode = line.Cross(&zeta,cp);
+ if(retcode<0)continue;
+ Double_t dca = line.GetDCA(&zeta);
+ if(dca<0.) continue;
+ if(dca>deltaR)continue;
+ Double_t deltaZ=cp[2]-zvert;
+ if(TMath::Abs(deltaZ)>dZmax)continue;
+
+ TClonesArray &lines = *fLines;
+ if(nolines == 0){
+ if(fLines->GetEntriesFast()>0)fLines->Clear();
+ }
+ if(fLines->GetEntriesFast()==fLines->GetSize()){
+ Int_t newsize=(Int_t) 1.5*fLines->GetEntriesFast();
+ fLines->Expand(newsize);
+ }
+ Float_t cov[6];
+ recp2->GetGlobalCov(cov);
+
+
+ Float_t rad1=TMath::Sqrt(gc1[0]*gc1[0]+gc1[1]*gc1[1]);
+ Float_t rad2=TMath::Sqrt(gc2[0]*gc2[0]+gc2[1]*gc2[1]);
+ Float_t factor=(rad1+rad2)/(rad2-rad1); //factor to account for error on tracklet direction
+
+ Float_t curvErr=0;
+ if(bField>0.00001){
+ Float_t curvRadius=fMeanPtSelTrk/(0.3*bField)*100; //cm
+ Float_t dRad=TMath::Sqrt(TMath::Power((gc1[0]-gc2[0]),2)+TMath::Power((gc1[1]-gc2[1]),2));
+ Float_t aux=dRad/2.+rad1;
+ curvErr=TMath::Sqrt(curvRadius*curvRadius-dRad*dRad/4.)-TMath::Sqrt(curvRadius*curvRadius-aux*aux); //cm
+ }
+
+ Float_t sigmasq[3];
+ sigmasq[0]=(cov[0]+curvErr*curvErr/2.)*factor*factor;
+ sigmasq[1]=(cov[3]+curvErr*curvErr/2.)*factor*factor;
+ sigmasq[2]=cov[5]*factor*factor;
+
+ // Multiple scattering
+ Float_t beta=1.;
+ Float_t beta2=beta*beta;
+ Float_t p2=fMeanPSelTrk*fMeanPSelTrk;
+ Float_t rBP=GetPipeRadius();
+ Float_t dBP=0.08/35.3; // 800 um of Be
+ Float_t dL1=0.01; //approx. 1% of radiation length
+ Float_t theta2BP=14.1*14.1/(beta2*p2*1e6)*TMath::Abs(dBP);
+ Float_t theta2L1=14.1*14.1/(beta2*p2*1e6)*TMath::Abs(dL1);
+ Float_t thetaBP=TMath::Sqrt(theta2BP);
+ Float_t thetaL1=TMath::Sqrt(theta2L1);
+// Float_t geomfac[3];
+// geomfac[0]=sin(phi1)*sin(phi1);
+// geomfac[1]=cos(phi1)*cos(phi1);
+// Float_t tgth=(gc2[2]-gc1[2])/(rad2-rad1);
+// geomfac[2]=1+tgth*tgth;
+ for(Int_t ico=0; ico<3;ico++){
+// printf("Error on coord. %d due to cov matrix+curvErr=%f\n",ico,sigmasq[ico]);
+// // sigmasq[ico]+=rad1*rad1*geomfac[ico]*theta2L1/2; // multiple scattering in layer 1
+// // sigmasq[ico]+=rBP*rBP*geomfac[ico]*theta2BP/2; // multiple scattering in beam pipe
+ sigmasq[ico]+=TMath::Power(rad1*TMath::Tan(thetaL1),2)/3.;
+ sigmasq[ico]+=TMath::Power(rBP*TMath::Tan(thetaBP),2)/3.;
+
+// printf("Multipl. scatt. contr %d = %f (LAY1), %f (BP)\n",ico,rad1*rad1*geomfac[ico]*theta2L1/2,rBP*rBP*geomfac[ico]*theta2BP/2);
+// printf("Total error on coord %d = %f\n",ico,sigmasq[ico]);
+ }
+ Float_t wmat[9]={1.,0.,0.,0.,1.,0.,0.,0.,1.};
+ if(sigmasq[0]!=0.) wmat[0]=1./sigmasq[0];
+ if(sigmasq[1]!=0.) wmat[4]=1./sigmasq[1];
+ if(sigmasq[2]!=0.) wmat[8]=1./sigmasq[2];
+ new(lines[nolines++])AliStrLine(gc1,sigmasq,wmat,gc2,kTRUE);
+
+ }
+ detTypeRec.ResetRecPoints();
}
- detTypeRec.ResetRecPoints();
}
}
delete prpl1;
}
-//______________________________________________________________________
-void AliITSVertexer3D::Find3DVertex(){
- // Determines the vertex position
- // same algorithm as in AliVertexerTracks::StrLinVertexFinderMinDist(0)
- // adapted to pure AliStrLine objects
-
- Int_t knacc = fLines->GetEntriesFast();
- Double_t (*vectP0)[3]=new Double_t [knacc][3];
- Double_t (*vectP1)[3]=new Double_t [knacc][3];
-
- Double_t sum[3][3];
- Double_t dsum[3]={0,0,0};
- for(Int_t i=0;i<3;i++)
- for(Int_t j=0;j<3;j++)sum[i][j]=0;
- for(Int_t i=0; i<knacc; i++){
- AliStrLine *line1 = (AliStrLine*)fLines->At(i);
-
- Double_t p0[3],cd[3];
- line1->GetP0(p0);
- line1->GetCd(cd);
- Double_t p1[3]={p0[0]+cd[0],p0[1]+cd[1],p0[2]+cd[2]};
- vectP0[i][0]=p0[0];
- vectP0[i][1]=p0[1];
- vectP0[i][2]=p0[2];
- vectP1[i][0]=p1[0];
- vectP1[i][1]=p1[1];
- vectP1[i][2]=p1[2];
-
- Double_t matr[3][3];
- Double_t dknow[3];
- AliVertexerTracks::GetStrLinDerivMatrix(p0,p1,matr,dknow);
-
- for(Int_t iii=0;iii<3;iii++){
- dsum[iii]+=dknow[iii];
- for(Int_t lj=0;lj<3;lj++) sum[iii][lj]+=matr[iii][lj];
- }
- }
-
- Double_t vett[3][3];
- Double_t det=AliVertexerTracks::GetDeterminant3X3(sum);
- Double_t initPos[3];
- Double_t sigma = 0.;
- for(Int_t i=0;i<3;i++)initPos[i]=0.;
-
- Int_t goodvert=0;
-
- if(det!=0){
- for(Int_t zz=0;zz<3;zz++){
- for(Int_t ww=0;ww<3;ww++){
- for(Int_t kk=0;kk<3;kk++) vett[ww][kk]=sum[ww][kk];
- }
- for(Int_t kk=0;kk<3;kk++) vett[kk][zz]=dsum[kk];
- initPos[zz]=AliVertexerTracks::GetDeterminant3X3(vett)/det;
- }
-
- Double_t rvert=TMath::Sqrt(initPos[0]*initPos[0]+initPos[1]*initPos[1]);
- Double_t zvert=initPos[2];
- if(rvert<fCoarseMaxRCut && TMath::Abs(zvert)<fZCutDiamond){
- for(Int_t i=0; i<knacc; i++){
- Double_t p0[3]={0,0,0},p1[3]={0,0,0};
- for(Int_t ii=0;ii<3;ii++){
- p0[ii]=vectP0[i][ii];
- p1[ii]=vectP1[i][ii];
- }
- sigma+=AliVertexerTracks::GetStrLinMinDist(p0,p1,initPos);
- }
- sigma=TMath::Sqrt(sigma);
- goodvert=1;
- }
- }
- delete vectP0;
- delete vectP1;
- if(!goodvert){
- Warning("Find3DVertex","Finder did not succed");
- for(Int_t i=0;i<3;i++)initPos[i]=0.;
- sigma=999;
- knacc=-1;
- }
- if(fVert3D){
- fVert3D-> SetXYZ(initPos);
- fVert3D->SetDispersion(sigma);
- fVert3D->SetNContributors(knacc);
- }else{
- fVert3D = new AliVertex(initPos,sigma,knacc);
- }
- if(fDebug) fVert3D->Print();
-}
-
-
-
//______________________________________________________________________
Int_t AliITSVertexer3D::Prepare3DVertex(Int_t optCuts){
// Finds the 3D vertex information using tracklets
Float_t deltaR=fCoarseMaxRCut;
Float_t dZmax=fZCutDiamond;
if(optCuts){
- xbeam=fVert3D->GetXv();
- ybeam=fVert3D->GetYv();
- zvert=fVert3D->GetZv();
+ xbeam=fVert3D.GetXv();
+ ybeam=fVert3D.GetYv();
+ zvert=fVert3D.GetZv();
deltaR=fMaxRCut;
dZmax=fMaxZCut;
}
Float_t binsizez=(zh-zl)/nbz;
TH3F *h3d = new TH3F("h3d","xyz distribution",nbr,rl,rh,nbr,rl,rh,nbz,zl,zh);
-
// cleanup of the TCLonesArray of tracklets (i.e. fakes are removed)
Int_t *validate = new Int_t [fLines->GetEntriesFast()];
for(Int_t i=0; i<fLines->GetEntriesFast();i++)validate[i]=0;
Double_t point[3];
Int_t retc = l1->Cross(l2,point);
if(retc<0)continue;
+ Double_t deltaZ=point[2]-zvert;
+ if(TMath::Abs(deltaZ)>dZmax)continue;
Double_t rad=TMath::Sqrt(point[0]*point[0]+point[1]*point[1]);
if(rad>fCoarseMaxRCut)continue;
Double_t deltaX=point[0]-xbeam;
Double_t deltaY=point[1]-ybeam;
- Double_t deltaZ=point[2]-zvert;
Double_t raddist=TMath::Sqrt(deltaX*deltaX+deltaY*deltaY);
- if(TMath::Abs(deltaZ)>dZmax)continue;
if(raddist>deltaR)continue;
- validate[i]++;
- validate[j]++;
+ validate[i]=1;
+ validate[j]=1;
h3d->Fill(point[0],point[1],point[2]);
}
}
if(validate[i]<1)fLines->RemoveAt(i);
}
fLines->Compress();
- if (fDebug) cout<<"Number of tracklets (after compress) "<<fLines->GetEntriesFast()<<endl;
+ AliDebug(1,Form("Number of tracklets (after compress)%d ",fLines->GetEntriesFast()));
delete [] validate;
if(l1->GetDistFromPoint(peak)>2.5*bs)fLines->RemoveAt(i);
}
fLines->Compress();
- if (fDebug) cout<<"Number of tracklets (after 2nd compression) "<<fLines->GetEntriesFast()<<endl;
-
+ AliDebug(1,Form("Number of tracklets (after 2nd compression) %d",fLines->GetEntriesFast()));
if(fLines->GetEntriesFast()>1){
- Find3DVertex(); // find a first candidate for the primary vertex
+ // find a first candidate for the primary vertex
+ fVert3D=AliVertexerTracks::TrackletVertexFinder(fLines,0);
// make a further selection on tracklets based on this first candidate
- fVert3D->GetXYZ(peak);
- if (fDebug) cout<<"FIRSTgv Ma V candidate: "<<peak[0]<<"; "<<peak[1]<<"; "<<peak[2]<<endl;
+ fVert3D.GetXYZ(peak);
+ AliDebug(1,Form("FIRST V candidate: %f ; %f ; %f",peak[0],peak[1],peak[2]));
for(Int_t i=0; i<fLines->GetEntriesFast();i++){
AliStrLine *l1 = (AliStrLine*)fLines->At(i);
if(l1->GetDistFromPoint(peak)> fDCAcut)fLines->RemoveAt(i);
}
fLines->Compress();
- if (fDebug) cout<<"Number of tracklets (after 3rd compression) "<<fLines->GetEntriesFast()<<endl;
- if(fLines->GetEntriesFast()>1){
- retcode = 0; // this last tracklet selection will be used
- delete fVert3D;
- fVert3D = 0;
- }
- else {
- retcode =1; // the previous tracklet selection will be used
- }
+ AliDebug(1,Form("Number of tracklets (after 3rd compression) %d",fLines->GetEntriesFast()));
+ if(fLines->GetEntriesFast()>1) retcode=0; // this new tracklet selection is used
+ else retcode =1; // the previous tracklet selection will be used
}
else {
retcode = 0;
return retcode;
}
- //______________________________________________________________________
-void AliITSVertexer3D::MakeTracklet(Double_t *pA, Double_t *pB, Int_t &nolines) {
- // makes a tracklet
- TClonesArray &lines = *fLines;
- if(nolines == 0){
- if(fLines->GetEntriesFast()>0)fLines->Clear();
- }
- if(fLines->GetEntriesFast()==fLines->GetSize()){
- Int_t newsize=(Int_t) 1.5*fLines->GetEntriesFast();
- fLines->Expand(newsize);
+//________________________________________________________
+void AliITSVertexer3D::SetMeanPPtSelTracks(Float_t fieldTesla){
+ // Sets mean values of P and Pt based on the field
+ if(TMath::Abs(fieldTesla-0.5)<0.01){
+ SetMeanPSelTracks(0.885);
+ SetMeanPtSelTracks(0.630);
+ }else if(TMath::Abs(fieldTesla-0.4)<0.01){
+ SetMeanPSelTracks(0.805);
+ SetMeanPtSelTracks(0.580);
+ }else if(TMath::Abs(fieldTesla-0.2)<0.01){
+ SetMeanPSelTracks(0.740);
+ SetMeanPtSelTracks(0.530);
+ }else if(fieldTesla<0.00001){
+ SetMeanPSelTracks(0.730);
+ SetMeanPtSelTracks(0.510);
+ }else{
+ SetMeanPSelTracks();
+ SetMeanPtSelTracks();
}
-
- new(lines[nolines++])AliStrLine(pA,pB,kTRUE);
}
- //______________________________________________________________________
-void AliITSVertexer3D::MakeTracklet(Float_t *pA, Float_t *pB, Int_t &nolines) {// Makes a tracklet
- //
- Double_t a[3],b[3];
- for(Int_t i=0;i<3;i++){
- a[i] = pA[i];
- b[i] = pB[i];
- }
- MakeTracklet(a,b,nolines);
-}
//________________________________________________________
void AliITSVertexer3D::PrintStatus() const {
// Print current status
- cout <<"=======================================================\n";
- cout << "Loose cut on Delta Phi "<<fCoarseDiffPhiCut<<endl;
- cout << "Cut on tracklet DCA to Z axis "<<fCoarseMaxRCut<<endl;
- cout << "Cut on tracklet DCA to beam axis "<<fMaxRCut<<endl;
- cout << "Cut on diamond (Z) "<<fZCutDiamond<<endl;
- cout << "Cut on DCA - tracklet to tracklet and to vertex "<<fDCAcut<<endl;
- cout <<" Max Phi difference: "<<fDiffPhiMax<<endl;
+ printf("=======================================================\n");
+ printf("Loose cut on Delta Phi %f\n",fCoarseDiffPhiCut);
+ printf("Cut on tracklet DCA to Z axis %f\n",fCoarseMaxRCut);
+ printf("Cut on tracklet DCA to beam axis %f\n",fMaxRCut);
+ printf("Cut on diamond (Z) %f\n",fZCutDiamond);
+ printf("Cut on DCA - tracklet to tracklet and to vertex %f\n",fDCAcut);
+ printf(" Max Phi difference: %f\n",fDiffPhiMax);
+ printf("=======================================================\n");
-
- cout <<"=======================================================\n";
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff