/* History of cvs commits:
*
* $Log$
+ * Revision 1.90 2007/07/11 13:43:30 hristov
+ * New class AliESDEvent, backward compatibility with the old AliESD (Christian)
+ *
+ * Revision 1.89 2007/07/03 08:13:04 kharlov
+ * Bug fix in CPV local coordinates
+ *
+ * Revision 1.88 2007/06/27 09:11:07 kharlov
+ * Bug fix for CPV-EMC distance
+ *
+ * Revision 1.87 2007/05/04 14:49:29 policheh
+ * AliPHOSRecPoint inheritance from AliCluster
+ *
+ * Revision 1.86 2007/04/02 15:00:16 cvetan
+ * No more calls to gAlice in the reconstruction
+ *
+ * Revision 1.85 2007/03/28 19:18:15 kharlov
+ * RecPoints recalculation in TSM removed
+ *
+ * Revision 1.84 2007/03/07 07:01:21 hristov
+ * Fixing copy/paste erro. Additional protections
+ *
+ * Revision 1.83 2007/03/06 21:07:37 kharlov
+ * DP: xz CPV-EMC distance filled to TS
+ *
+ * Revision 1.82 2007/03/06 06:54:48 kharlov
+ * DP:Calculation of cluster properties dep. on vertex added
+ *
+ * Revision 1.81 2007/02/05 10:02:40 kharlov
+ * Module numbering is corrected
+ *
* Revision 1.80 2006/08/28 10:01:56 kharlov
* Effective C++ warnings fixed (Timur Pocheptsov)
*
#include "AliPHOSTrackSegment.h"
#include "AliPHOSLink.h"
#include "AliPHOSGetter.h"
-#include "AliESD.h"
+#include "AliESDEvent.h"
#include "AliESDtrack.h"
+#include "AliPHOSQualAssDataMaker.h"
ClassImp( AliPHOSTrackSegmentMakerv1)
fNTrackSegments(0),
fRcpv(0.f),
fRtpc(0.f),
+ fVtx(0.f),
fLinkUpArray(0),
fEmcFirst(0),
fEmcLast(0),
fNTrackSegments(0),
fRcpv(0.f),
fRtpc(0.f),
+ fVtx(0.f),
fLinkUpArray(0),
fEmcFirst(0),
fEmcLast(0),
fNTrackSegments(0),
fRcpv(0.f),
fRtpc(0.f),
+ fVtx(0.f),
fLinkUpArray(0),
fEmcFirst(0),
fEmcLast(0),
// clusters from one PHOS module are
AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
-
TObjArray * emcRecPoints = gime->EmcRecPoints() ;
TObjArray * cpvRecPoints = gime->CpvRecPoints() ;
-
+
//First EMC clusters
Int_t totalEmc = emcRecPoints->GetEntriesFast() ;
for(fEmcFirst = fEmcLast; (fEmcLast < totalEmc) &&
}
//____________________________________________________________________________
-Float_t AliPHOSTrackSegmentMakerv1::GetDistanceInPHOSPlane(AliPHOSEmcRecPoint * emcClu,AliPHOSCpvRecPoint * cpvClu, Int_t &trackindex) const
+void AliPHOSTrackSegmentMakerv1::GetDistanceInPHOSPlane(AliPHOSEmcRecPoint * emcClu,
+ AliPHOSCpvRecPoint * cpvClu,
+ Int_t &trackindex,
+ Float_t &dx, Float_t &dz) const
{
// Calculates the distance between the EMC RecPoint and the CPV RecPoint
// 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 distance2Cpv = fRcpv ;
+// 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
TVector3 vecEmc ; // Local position of EMC recpoint
- TVector3 vecCpv ; // Local position of CPV recpoint propagated to EMC
- TVector3 vecDist ; // Distance between local positions of two points
+ TVector3 vecP ; // Momentum direction at CPV plain
+ TVector3 vecPloc ; // Momentum direction at CPV plain
- emcClu->GetLocalPosition(vecEmc) ;
- cpvClu->GetLocalPosition(vecCpv) ;
-
//toofar = kTRUE ;
- if(emcClu->GetPHOSMod() == cpvClu->GetPHOSMod()){
+ if(emcClu->GetPHOSMod() != cpvClu->GetPHOSMod()){
+ dx=999. ;
+ dz=999. ;
+ return ;
+ }
+
+ emcClu->GetLocalPosition(vecEmc) ;
- // Find EMC-CPV distance
- distance2Cpv = (vecCpv - vecEmc).Mag() ;
+ AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
+ const AliPHOSGeometry * geom = gime->PHOSGeometry() ;
- if (fESD != 0x0) {
- AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
- const AliPHOSGeometry * geom = gime->PHOSGeometry() ;
-
- Double_t rPHOS = geom->GetIPtoCrystalSurface();
-
- //PH Acceptance boundaries for each PHOS module
- Int_t nModules = geom->GetNModules();
- Double_t * thmin = new Double_t[nModules];// theta min
- Double_t * thmax = new Double_t[nModules];// theta max
- Double_t * phmin = new Double_t[nModules];// phi min
- Double_t * phmax = new Double_t[nModules];// phi max
-
- for (Int_t imod=0; imod<nModules; imod++) {
- // Modules are numbered from 1 to 5 in AliPHOSGeometry
- geom->EmcModuleCoverage(imod+1,
- thmin[imod],thmax[imod],
- phmin[imod],phmax[imod]);
- }
+ Double_t xCPV,zCPV ; //EMC-projected coordinates of CPV cluster
+ TVector3 cpvGlobal; // Global position of the CPV recpoint
+ geom->GetGlobalPHOS((AliPHOSRecPoint*)cpvClu,cpvGlobal);
+ Double_t vtxCPV[3]={cpvGlobal.X(),cpvGlobal.Y(),cpvGlobal.Z()} ;
+ Int_t dummyMod ;
+
+ if (fESD == 0x0) {
+ //if no track information available, assume straight line from IP to emcal
+ geom->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 = 1e6;
- Double_t pxyz[3], xyz[3];
- TVector3 inPHOS; //PH Used to calculate theta and phi
-
- //PH Loop on tracks
- AliESDtrack *track;
- for (Int_t iTrack=0; iTrack<nTracks; iTrack++) {
- track = fESD->GetTrack(iTrack);
- if (!track->GetXYZAt(rPHOS, fESD->GetMagneticField(), xyz))
+ // 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
- if ((TMath::Abs(xyz[0])+TMath::Abs(xyz[1])+TMath::Abs(xyz[2]))<=0)
+ if ((TMath::Abs(xyz[0])+TMath::Abs(xyz[1])+TMath::Abs(xyz[2]))<=0)
continue;
- //PH Here one has to cut out the tracks which are not inside the PHOS
- //PH acceptance
- inPHOS.SetXYZ(xyz[0],xyz[1],xyz[2]);
- Double_t inPhi = inPHOS.Phi();
- Double_t inTheta = inPHOS.Theta();
-
- Bool_t skip = kTRUE;
- for (Int_t imod=0; imod<nModules; imod++) {
- //PH Loop on modules to check if the track enters in the acceptance
- if (thmin[imod] < inTheta && thmax[imod] > inTheta &&
- phmin[imod] < inPhi && phmax[imod] > inPhi) {
- skip = kFALSE;
- break;
- }
- }
- if (skip) continue; //PH Skip, if not in the PHOS acceptance
-
- if (!track->GetPxPyPzAt(rPHOS, fESD->GetMagneticField(), pxyz))
- continue; // track momentum ibid.
- PropagateToPlane(vecDist,xyz,pxyz,"CPV",cpvClu->GetPHOSMod());
- // Info("GetDistanceInPHOSPlane","Track %d propagation to CPV = (%f,%f,%f)",
- // iTrack,vecDist.X(),vecDist.Y(),vecDist.Z());
- vecDist -= vecCpv;
- distance2Track = TMath::Sqrt(vecDist.X()*vecDist.X() + vecDist.Z()*vecDist.Z());
- // Find the closest track to the EMC recpoint
- if (distance2Track < minDistance) {
- minDistance = distance2Track;
- iClosestTrack = iTrack;
- }
+ //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;
}
+ }
- delete [] thmin;
- delete [] thmax;
- delete [] phmin;
- delete [] phmax;
-
- if (iClosestTrack != -1) {
- track = fESD->GetTrack(iClosestTrack);
- if (track->GetPxPyPzAt(rPHOS, fESD->GetMagneticField(), pxyz)) { // track momentum ibid.
- TVector3 vecCpvGlobal; // Global position of the CPV recpoint
- geom->GetGlobal((AliRecPoint*)cpvClu,vecCpvGlobal);
- for (Int_t ixyz=0; ixyz<3; ixyz++)
- xyz[ixyz] = vecCpvGlobal[ixyz];
- PropagateToPlane(vecDist,xyz,pxyz,"EMC",cpvClu->GetPHOSMod());
-// Info("GetDistanceInPHOSPlane","Track %d propagation to EMC = (%f,%f,%f)",
-// iClosestTrack,vecDist.X(),vecDist.Y(),vecDist.Z());
- vecDist -= vecEmc;
- distance2Track = TMath::Sqrt(vecDist.X()*vecDist.X() + vecDist.Z()*vecDist.Z());
- }
+ if (iClosestTrack != -1) {
+ 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 ;
+ geom->ImpactOnEmc(vtxCPV,vecP.Theta(),vecP.Phi(),dummyMod,zCPV,xCPV) ;
}
-// } else {
-// // If no ESD exists, than simply find EMC-CPV distance
-// distance = (vecCpv - vecEmc).Mag() ;
+ }
- //if(distance2Track < fRcpv + 2*delta )
- if(distance2Track < fRtpc )
- trackindex = iClosestTrack ;
- // toofar = kFALSE ;
+ if(minDistance < fRtpc ){
+ trackindex = iClosestTrack ;
}
- // Info("GetDistanceInPHOSPlane","cpv-emc distance is %f cm",
- // distance);
}
-
- return distance2Cpv ;
-}
-
-//____________________________________________________________________________
-void AliPHOSTrackSegmentMakerv1::PropagateToPlane(TVector3& globalIntersection,
- Double_t *x,
- Double_t *p,
- const char *det,
- Int_t moduleNumber) const
-{
- // Propagate a straight-line track from the origin point x
- // along the direction p to the CPV or EMC module moduleNumber
- // Returns a local position of such a propagation
-
- AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
- const AliPHOSGeometry * geom = gime->PHOSGeometry() ;
- TVector3 moduleCenter;
- geom->GetModuleCenter(moduleCenter,det,moduleNumber);
- TVector3 vertex; vertex.SetXYZ(x[0],x[1],x[2]);
- TVector3 direction; direction.SetXYZ(p[0],p[1],p[2]);
-
-// Info("PropagateToCPV","Center of the %s module %d is (%f,%f,%f)",
-// det,moduleNumber,moduleCenter[0],moduleCenter[1],moduleCenter[2]);
-
- Double_t time = (moduleCenter.Mag2() - vertex.Dot(moduleCenter)) /
- (direction.Dot(moduleCenter));
- vertex += direction*time;
- geom->Global2Local(globalIntersection,vertex,moduleNumber);
+ if(trackindex!=-1){
+ // If the closest global track is found, calculate EMC-CPV distance from it
+ dx=xCPV - vecEmc.X() ;
+ dz=zCPV - vecEmc.Z() ;
+ }
+ else{
+ // If no global track was found, just take the nearest CPV point
+ geom->ImpactOnEmc(vtxCPV,cpvGlobal.Theta(),cpvGlobal.Phi(),dummyMod,zCPV,xCPV) ;
+ dx=xCPV - vecEmc.X() ;
+ dz=zCPV - vecEmc.Z() ;
+ }
+ return ;
}
-
//____________________________________________________________________________
void AliPHOSTrackSegmentMakerv1::Init()
{
cpv = dynamic_cast<AliPHOSCpvRecPoint *>(cpvRecPoints->At(iCpv)) ;
Int_t track = -1 ;
- Float_t r = GetDistanceInPHOSPlane(emcclu, cpv, track) ;
- // if(toofar)
- // continue ;
- if(r < fRcpv) {
- new ((*fLinkUpArray)[iLinkUp++]) AliPHOSLink(r, iEmcRP, iCpv, track) ;
+ Float_t dx,dz ;
+ GetDistanceInPHOSPlane(emcclu, cpv, track,dx,dz) ;
+ if(TMath::Sqrt(dx*dx+dz*dz) < fRcpv ){
+ new ((*fLinkUpArray)[iLinkUp++]) AliPHOSLink(dx, dz, iEmcRP, iCpv, track) ;
}
}
}
if(emcExist[linkUp->GetEmc()-fEmcFirst] != -1){
if(cpvExist[linkUp->GetCpv()-fCpvFirst]){ //CPV still exist
+ Float_t dx,dz ;
+ linkUp->GetXZ(dx,dz) ;
new ((* trackSegments)[fNTrackSegments])
AliPHOSTrackSegment(dynamic_cast<AliPHOSEmcRecPoint *>(emcRecPoints->At(linkUp->GetEmc())) ,
dynamic_cast<AliPHOSCpvRecPoint *>(cpvRecPoints->At(linkUp->GetCpv())) ,
- linkUp->GetTrack()) ;
+ linkUp->GetTrack(),dx,dz) ;
(dynamic_cast<AliPHOSTrackSegment *>(trackSegments->At(fNTrackSegments)))->SetIndexInList(fNTrackSegments);
fNTrackSegments++ ;
Int_t ievent ;
for (ievent = fFirstEvent; ievent <= fLastEvent; ievent++) {
- gime->Event(ievent,"R") ;
+ gime->Event(ievent,"DR") ;
//Make some initializations
fNTrackSegments = 0 ;
fEmcFirst = 0 ;
gime->TrackSegments()->Clear();
- // if(!ReadRecPoints(ievent)) continue; //reads RecPoints for event ievent
+ // if(!ReadRecPoints(ievent)) continue; //reads RecPoints for event ievent
for(fModule = 1; fModule <= geom->GetNModules() ; fModule++ ) {
FillOneModule() ;
MakeLinks() ;
MakePairs() ;
}
-
+
+
WriteTrackSegments() ;
if(strstr(option,"deb"))
if(fWrite) //do not unload in "on flight" mode
Unload();
}
-
//____________________________________________________________________________
void AliPHOSTrackSegmentMakerv1::Unload()
{
TClonesArray * trackSegments = AliPHOSGetter::Instance()->TrackSegments() ;
Info("PrintTrackSegments", "Results from TrackSegmentMaker:") ;
- printf("nevent: %d\n", gAlice->GetEvNumber()) ;
+ printf("nevent: %d\n", AliPHOSGetter::Instance()->EventNumber()) ;
printf(" Found %d TrackSegments\n", trackSegments->GetEntriesFast() );
if(strstr(option,"all")) { // printing found TS
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff