//
// --- ROOT system ---
+#include "TVector3.h"
#include "TTree.h"
#include "TBenchmark.h"
#include "AliESDtrack.h"
#include "AliPHOSEmcRecPoint.h"
#include "AliPHOSCpvRecPoint.h"
+#include "AliLog.h"
+#include "AliMagF.h"
+#include "AliMagF.h"
+#include "AliTracker.h"
+#include "AliGeomManager.h"
+#include "AliCluster.h"
+#include "AliKalmanTrack.h"
+#include "AliGlobalQADataMaker.h"
+#include "AliVParticle.h"
+
ClassImp( AliPHOSTrackSegmentMakerv1)
Float_t &dx, Float_t &dz) const
{
// Calculates the distance between the EMC RecPoint and the CPV RecPoint
+ // If no CPV, calculates the distance between the EMC RecPoint and the track
+ // prolongation to the PHOS module plane.
// Clusters are sorted in "rows" and "columns" of width 1 cm
// Float_t delta = 1 ; // Width of the rows in sorting of RecPoints (in cm)
// // if you change this value, change it as well in xxxRecPoint::Compare()
- Float_t distance2Track = fRtpc ;
- trackindex = -1 ; // closest track within fRCpv
+ trackindex = -1;
+ dx = 999.;
+ dz = 999.;
+
+ if(!cpvClu) {
+
+ if(!emcClu) {
+ return;
+ }
+ // *** Start the matching
+ Int_t nt=fESD->GetNumberOfTracks();
+ Int_t iPHOSMod = emcClu->GetPHOSMod() ;
+ //Calculate actual distance to PHOS module
+ TVector3 globaPos ;
+ fGeom->Local2Global(iPHOSMod, 0.,0., globaPos) ;
+ const Double_t rPHOS = globaPos.Pt() ; //Distance to center of PHOS module
+ const Double_t kYmax = 72.+10. ; //Size of the module (with some reserve) in phi direction
+ const Double_t kZmax = 64.+10. ; //Size of the module (with some reserve) in z direction
+ const Double_t kAlpha0=330./180.*TMath::Pi() ; //First PHOS module angular direction
+ const Double_t kAlpha= 20./180.*TMath::Pi() ; //PHOS module angular size
+ Double_t minDistance = 1.e6;
+
+ TVector3 vecEmc ; // Local position of EMC recpoint
+ emcClu->GetLocalPosition(vecEmc) ;
+
+ Double_t gposTrack[3] ;
+ Double_t bz = AliTracker::GetBz() ; //B-Field for approximate matching
+ Double_t b[3];
+ for (Int_t i=0; i<nt; i++) {
+ AliESDtrack *esdTrack=fESD->GetTrack(i);
+
+ // Skip the tracks having "wrong" status (has to be checked/tuned)
+ ULong_t status = esdTrack->GetStatus();
+ if ((status & AliESDtrack::kTPCout) == 0) continue;
+// if ((status & AliESDtrack::kTRDout) == 0) continue;
+// if ((status & AliESDtrack::kTRDrefit) == 1) continue;
+
+ //Continue extrapolation from TPC outer surface
+ const AliExternalTrackParam *outerParam=esdTrack->GetOuterParam();
+ if (!outerParam) continue;
+ AliExternalTrackParam t(*outerParam);
+
+ t.GetBxByBz(b) ;
+ //Direction to the current PHOS module
+ Double_t phiMod=kAlpha0-kAlpha*iPHOSMod ;
+ if(!t.Rotate(phiMod))
+ continue ;
+
+ Double_t y; // Some tracks do not reach the PHOS
+ if (!t.GetYAt(rPHOS,bz,y)) continue; // because of the bending
+
+ Double_t z;
+ if(!t.GetZAt(rPHOS,bz,z))
+ continue ;
+ if (TMath::Abs(z) > kZmax)
+ continue; // Some tracks miss the PHOS in Z
+ if(TMath::Abs(y) < kYmax){
+ t.PropagateToBxByBz(rPHOS,b); // Propagate to the matching module
+ //t.CorrectForMaterial(...); // Correct for the TOF material, if needed
+ t.GetXYZ(gposTrack) ;
+ TVector3 globalPositionTr(gposTrack) ;
+ TVector3 localPositionTr ;
+ fGeom->Global2Local(localPositionTr,globalPositionTr,iPHOSMod) ;
+ Double_t ddx = vecEmc.X()-localPositionTr.X();
+ Double_t ddz = vecEmc.Z()-localPositionTr.Z();
+ Double_t d2 = ddx*ddx + ddz*ddz;
+ if(d2 < minDistance) {
+ dx = ddx ;
+ dz = ddz ;
+ trackindex=i;
+ minDistance=d2 ;
+ }
+ }
+ } //Scanned all tracks
+ return ;
+ }
+
+
+ TVector3 emcGlobal;
+ fGeom->GetGlobalPHOS((AliPHOSRecPoint*)emcClu,emcGlobal);
+
+ // Radius from IP to current point
+ Double_t rEMC = TMath::Abs(emcGlobal.Pt());
+
+ // Extrapolate the global track direction to EMC
+ // and find the closest track
+
+ Int_t nTracks = fESD->GetNumberOfTracks();
+
+ AliESDtrack *track;
+ Double_t xyz[] = {-1,-1,-1};
+ Double_t pxyz[3];
+ Double_t zEMC,xEMC;
+ Int_t module;
+ TVector3 vecP;
+ TVector3 locClu;
+
+ Float_t minDistance = 1.e6;
+ Float_t dr;
+
+ for (Int_t iTrack=0; iTrack<nTracks; iTrack++) {
+ track = fESD->GetTrack(iTrack);
+ if (!track->GetXYZAt(rEMC, fESD->GetMagneticField(), xyz)) continue;
+
+ AliDebug(1,Form("Event %d, iTrack: %d, (%.3f,%.3f,%.3f)",
+ fESD->GetEventNumberInFile(),iTrack,xyz[0],xyz[1],xyz[2]));
+
+ if (track->GetPxPyPzAt(rEMC,fESD->GetMagneticField(),pxyz)) {
+
+ vecP.SetXYZ(pxyz[0],pxyz[1],pxyz[2]);
+ fGeom->ImpactOnEmc(xyz,vecP.Theta(),vecP.Phi(),module,zEMC,xEMC) ;
+
+ if(!module) continue;
+ AliDebug(1,Form("\t\tTrack hit PHOS! Module: %d, (x,z)=(%.3f,%.3f)",module,xEMC,zEMC));
+
+ if(emcClu->GetPHOSMod() != module) continue;
+
+ // match track to EMC cluster
+ emcClu->GetLocalPosition(locClu);
+
+ Float_t delta_x = xEMC - locClu.X();
+ Float_t delta_z = zEMC - locClu.Z();
+ dr = TMath::Sqrt(delta_x*delta_x + delta_z*delta_z);
+ AliDebug(1,Form("\tMatch iTrack=%d: (dx,dz)=(%.3f,%.3f)",iTrack,delta_x,delta_z));
+
+ if(dr<minDistance) {
+ trackindex = iTrack;
+ minDistance = dr;
+ dx = delta_x;
+ dz = delta_z;
+ }
+ }
+
+ }
+
+ if(trackindex>=0)
+ AliDebug(1,Form("\t\tBest match for (xClu,zClu,eClu)=(%.3f,%.3f,%.3f): iTrack=%d, dR=%.3f",
+ locClu.X(),locClu.Z(),emcClu->GetEnergy(),
+ trackindex,TMath::Sqrt(dx*dx+dz*dz)));
+ return;
+
+ Float_t distance2Track = fRtpc ;
+
+ trackindex = -1 ; // closest track within fRCpv
+
TVector3 vecEmc ; // Local position of EMC recpoint
- TVector3 vecP ; // Momentum direction at CPV plain
TVector3 vecPloc ; // Momentum direction at CPV plain
//toofar = kTRUE ;
dz=999. ;
return ;
}
-
+
emcClu->GetLocalPosition(vecEmc) ;
-
+
Double_t xCPV,zCPV ; //EMC-projected coordinates of CPV cluster
TVector3 cpvGlobal; // Global position of the CPV recpoint
fGeom->GetGlobalPHOS((AliPHOSRecPoint*)cpvClu,cpvGlobal);
Int_t dummyMod ;
if (fESD == 0x0) {
- //if no track information available, assume straight line from IP to emcal
- fGeom->ImpactOnEmc(vtxCPV,cpvGlobal.Theta(),cpvGlobal.Phi(),dummyMod,zCPV,xCPV) ;
- dx=xCPV - vecEmc.X() ;
- dz=zCPV - vecEmc.Z() ;
- return ;
+ //if no track information available, assume straight line from IP to emcal
+ fGeom->ImpactOnEmc(vtxCPV,cpvGlobal.Theta(),cpvGlobal.Phi(),dummyMod,zCPV,xCPV) ;
+ dx=xCPV - vecEmc.X() ;
+ dz=zCPV - vecEmc.Z() ;
+ return ;
}
-
+
//if there is ESD try to correct distance using TPC information on particle direct in CPV
if (fESD != 0x0) {
Double_t rCPV = cpvGlobal.Pt() ;// Radius from IP to current point
// Extrapolate the global track direction if any to CPV and find the closest track
- Int_t nTracks = fESD->GetNumberOfTracks();
Int_t iClosestTrack = -1;
- Double_t minDistance = 1.e6;
TVector3 inPHOS ;
- AliESDtrack *track;
- Double_t xyz[3] ;
- Double_t pxyz[3];
for (Int_t iTrack=0; iTrack<nTracks; iTrack++) {
track = fESD->GetTrack(iTrack);
if (!track->GetXYZAt(rCPV, fESD->GetMagneticField(), xyz))
- continue; //track coord on the cylinder of PHOS radius
+ continue; //track coord on the cylinder of PHOS radius
if ((TMath::Abs(xyz[0])+TMath::Abs(xyz[1])+TMath::Abs(xyz[2]))<=0)
- continue;
+ continue;
//Check if this track hits PHOS
inPHOS.SetXYZ(xyz[0],xyz[1],xyz[2]);
distance2Track = inPHOS.Angle(cpvGlobal) ;
// Find the closest track to the CPV recpoint
if (distance2Track < minDistance) {
- minDistance = distance2Track;
- iClosestTrack = iTrack;
+ minDistance = distance2Track;
+ iClosestTrack = iTrack;
}
}
track = fESD->GetTrack(iClosestTrack);
if (track->GetPxPyPzAt(rCPV, fESD->GetMagneticField(), pxyz)) { // track momentum ibid.
vecP.SetXYZ(pxyz[0],pxyz[1],pxyz[2]);
- Int_t dummyMod ;
fGeom->ImpactOnEmc(vtxCPV,vecP.Theta(),vecP.Phi(),dummyMod,zCPV,xCPV) ;
}
}
Int_t iEmcRP ;
for(iEmcRP = 0; iEmcRP < fEmcLast-fEmcFirst ; iEmcRP++ ){
if(emcExist[iEmcRP] > 0 ){
- new ((*fTrackSegments)[fNTrackSegments])
- AliPHOSTrackSegment(dynamic_cast<AliPHOSEmcRecPoint *>(fEMCRecPoints->At(iEmcRP+fEmcFirst)),
- nullpointer) ;
- (dynamic_cast<AliPHOSTrackSegment *>(fTrackSegments->At(fNTrackSegments)))->SetIndexInList(fNTrackSegments);
- fNTrackSegments++;
+ Int_t track = -1 ;
+ Float_t dx,dz ;
+ AliPHOSEmcRecPoint *emcclu = dynamic_cast<AliPHOSEmcRecPoint *>(fEMCRecPoints->At(iEmcRP+fEmcFirst));
+ GetDistanceInPHOSPlane(emcclu, 0, track,dx,dz);
+ if(track<0)
+ new ((*fTrackSegments)[fNTrackSegments]) AliPHOSTrackSegment(emcclu,nullpointer) ;
+ else
+ new ((*fTrackSegments)[fNTrackSegments]) AliPHOSTrackSegment(emcclu,0,track,dx,dz);
+ (dynamic_cast<AliPHOSTrackSegment *>(fTrackSegments->At(fNTrackSegments)))->SetIndexInList(fNTrackSegments);
+ fNTrackSegments++;
}
}
}
fTrackSegments->Clear();
// if(!ReadRecPoints(ievent)) continue; //reads RecPoints for event ievent
-
+
for(fModule = 1; fModule <= fGeom->GetNModules() ; fModule++ ) {
FillOneModule() ;
MakeLinks() ;
}
}
}
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff