* about the suitability of this software for any purpose. It is *
* provided "as is" without express or implied warranty. *
**************************************************************************/
-
/* $Id$ */
+/* History of cvs commits:
+ *
+ * $Log$
+ * Revision 1.93 2007/10/10 09:05:10 schutz
+ * Changing name QualAss to QA
+ *
+ * Revision 1.92 2007/08/28 12:55:08 policheh
+ * Loaders removed from the reconstruction code (C.Cheshkov)
+ *
+ * Revision 1.91 2007/08/07 14:12:03 kharlov
+ * Quality assurance added (Yves Schutz)
+ *
+ * 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)
+ *
+ * Revision 1.79 2006/04/25 12:41:15 hristov
+ * Moving non-persistent data to AliESDfriend (Yu.Belikov)
+ *
+ * Revision 1.78 2005/11/18 13:04:51 hristov
+ * Bug fix
+ *
+ * Revision 1.77 2005/11/17 23:34:36 hristov
+ * Corrected logics
+ *
+ * Revision 1.76 2005/11/17 22:29:12 hristov
+ * Faster version, no attempt to match tracks outside the PHOS acceptance
+ *
+ * Revision 1.75 2005/11/17 12:35:27 hristov
+ * Use references instead of objects. Avoid to create objects when they are not really needed
+ *
+ * Revision 1.74 2005/07/08 14:01:36 hristov
+ * Tracking in non-uniform nmagnetic field (Yu.Belikov)
+ *
+ * Revision 1.73 2005/05/28 14:19:05 schutz
+ * Compilation warnings fixed by T.P.
+ *
+ */
+
//_________________________________________________________________________
// Implementation version 1 of algorithm class to construct PHOS track segments
-// Associates EMC and PPSD clusters
-// Unfolds the EMC cluster
-//
-//*-- Author: Dmitri Peressounko (RRC Ki & SUBATECH)
+// Track segment for PHOS is list of
+// EMC RecPoint + (possibly) CPV RecPoint
+// To find TrackSegments we do the following:
+// for each EMC RecPoints we look at
+// CPV RecPoints in the radious fRcpv.
+// If there is such a CPV RecPoint,
+// we make "Link" it is just indexes of EMC and CPV RecPoint and distance
+// between them in the PHOS plane.
+// Then we sort "Links" and starting from the
+// least "Link" pointing to the unassined EMC and CPV RecPoints assing them to
+// new TrackSegment.
+// If there is no CPV RecPoint we make TrackSegment
+// consisting from EMC alone. There is no TrackSegments without EMC RecPoint.
+//// In principle this class should be called from AliPHOSReconstructor, but
+// one can use it as well in standalone mode.
+// Use case:
+// root [0] AliPHOSTrackSegmentMakerv1 * t = new AliPHOSTrackSegmentMaker("galice.root", "tracksegmentsname", "recpointsname")
+// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
+// // reads gAlice from header file "galice.root", uses recpoints stored in the branch names "recpointsname" (default = "Default")
+// // and saves recpoints in branch named "tracksegmentsname" (default = "recpointsname")
+// root [1] t->ExecuteTask()
+// root [3] t->SetTrackSegmentsBranch("max distance 5 cm")
+// root [4] t->ExecuteTask("deb all time")
+//
+//*-- Author: Dmitri Peressounko (RRC Ki & SUBATECH) & Yves Schutz (SUBATECH)
//
// --- ROOT system ---
-
-#include "TObjArray.h"
-#include "TClonesArray.h"
-#include "TObjectTable.h"
+#include "TTree.h"
+#include "TBenchmark.h"
// --- Standard library ---
-
-#include <iostream>
-#include <cassert>
-
+#include "Riostream.h"
// --- AliRoot header files ---
-
+#include "AliPHOSGeometry.h"
#include "AliPHOSTrackSegmentMakerv1.h"
#include "AliPHOSTrackSegment.h"
#include "AliPHOSLink.h"
-#include "AliPHOSv0.h"
-#include "AliRun.h"
-
-extern void UnfoldingChiSquare(Int_t &nPar, Double_t *Grad, Double_t & fret, Double_t *x, Int_t iflag) ;
+#include "AliESDEvent.h"
+#include "AliESDtrack.h"
+#include "AliPHOSEmcRecPoint.h"
+#include "AliPHOSCpvRecPoint.h"
ClassImp( AliPHOSTrackSegmentMakerv1)
//____________________________________________________________________________
- AliPHOSTrackSegmentMakerv1::AliPHOSTrackSegmentMakerv1() : AliPHOSTrackSegmentMaker()
+AliPHOSTrackSegmentMakerv1::AliPHOSTrackSegmentMakerv1() :
+ AliPHOSTrackSegmentMaker(),
+ fDefaultInit(kTRUE),
+ fWrite(kFALSE),
+ fNTrackSegments(0),
+ fRcpv(0.f),
+ fRtpc(0.f),
+ fVtx(0.f),
+ fLinkUpArray(0),
+ fEmcFirst(0),
+ fEmcLast(0),
+ fCpvFirst(0),
+ fCpvLast(0),
+ fModule(0),
+ fTrackSegments(NULL)
+{
+ // default ctor (to be used mainly by Streamer)
+ InitParameters() ;
+}
+
+//____________________________________________________________________________
+AliPHOSTrackSegmentMakerv1::AliPHOSTrackSegmentMakerv1(AliPHOSGeometry *geom) :
+ AliPHOSTrackSegmentMaker(geom),
+ fDefaultInit(kFALSE),
+ fWrite(kFALSE),
+ fNTrackSegments(0),
+ fRcpv(0.f),
+ fRtpc(0.f),
+ fVtx(0.f),
+ fLinkUpArray(0),
+ fEmcFirst(0),
+ fEmcLast(0),
+ fCpvFirst(0),
+ fCpvLast(0),
+ fModule(0),
+ fTrackSegments(NULL)
{
// ctor
+ InitParameters() ;
+ Init() ;
+ fESD = 0;
+}
+
- fR0 = 4. ;
- AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance() ;
- //clusters are sorted in "rows" and "columns" of width geom->GetCrystalSize(0),
- fDelta = fR0 + geom->GetCrystalSize(0) ;
- fMinuit = new TMinuit(100) ;
- fUnfoldFlag = kTRUE ;
+AliPHOSTrackSegmentMakerv1::AliPHOSTrackSegmentMakerv1(const AliPHOSTrackSegmentMakerv1 & tsm) :
+ AliPHOSTrackSegmentMaker(tsm),
+ fDefaultInit(kFALSE),
+ fWrite(kFALSE),
+ fNTrackSegments(0),
+ fRcpv(0.f),
+ fRtpc(0.f),
+ fVtx(0.f),
+ fLinkUpArray(0),
+ fEmcFirst(0),
+ fEmcLast(0),
+ fCpvFirst(0),
+ fCpvLast(0),
+ fModule(0),
+ fTrackSegments(NULL)
+{
+ // cpy ctor: no implementation yet
+ // requested by the Coding Convention
+ Fatal("cpy ctor", "not implemented") ;
}
+
//____________________________________________________________________________
AliPHOSTrackSegmentMakerv1::~AliPHOSTrackSegmentMakerv1()
{
// dtor
-
- delete fMinuit ;
+ // fDefaultInit = kTRUE if TrackSegmentMaker created by default ctor (to get just the parameters)
+ if (!fDefaultInit)
+ delete fLinkUpArray ;
+ if (fTrackSegments) {
+ fTrackSegments->Delete();
+ delete fTrackSegments;
+ }
}
//____________________________________________________________________________
-Bool_t AliPHOSTrackSegmentMakerv1::FindFit(AliPHOSEmcRecPoint * emcRP, int * maxAt, Float_t * maxAtEnergy,
- Int_t nPar, Float_t * fitparameters)
-{
- // Calls TMinuit to fit the energy distribution of a cluster with several maxima
-
- AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance() ;
+void AliPHOSTrackSegmentMakerv1::FillOneModule()
+{
+ // Finds first and last indexes between which
+ // clusters from one PHOS module are
+
+ //First EMC clusters
+ Int_t totalEmc = fEMCRecPoints->GetEntriesFast() ;
+ for(fEmcFirst = fEmcLast; (fEmcLast < totalEmc) &&
+ ((dynamic_cast<AliPHOSRecPoint *>(fEMCRecPoints->At(fEmcLast)))->GetPHOSMod() == fModule );
+ fEmcLast ++) ;
+
+ //Now CPV clusters
+ Int_t totalCpv = fCPVRecPoints->GetEntriesFast() ;
- gMinuit->SetPrintLevel(-1) ; // No Printout
- gMinuit->SetFCN(UnfoldingChiSquare) ; // To set the address of the minimization function
- gMinuit->SetObjectFit(emcRP) ; // To tranfer pointer to UnfoldingChiSquare
+ for(fCpvFirst = fCpvLast; (fCpvLast < totalCpv) &&
+ ((dynamic_cast<AliPHOSRecPoint *>(fCPVRecPoints->At(fCpvLast)))->GetPHOSMod() == fModule );
+ fCpvLast ++) ;
+
+}
- // filling initial values for fit parameters
- AliPHOSDigit * digit ;
+//____________________________________________________________________________
+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
- Int_t ierflg = 0;
- Int_t index = 0 ;
- Int_t nDigits = (Int_t) nPar / 3 ;
+// 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 ;
- Int_t iDigit ;
+ 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 ;
+ if(emcClu->GetPHOSMod() != cpvClu->GetPHOSMod()){
+ dx=999. ;
+ dz=999. ;
+ return ;
+ }
- for(iDigit = 0; iDigit < nDigits; iDigit++){
- digit = (AliPHOSDigit *) maxAt[iDigit];
+ emcClu->GetLocalPosition(vecEmc) ;
- Int_t relid[4] ;
- Float_t x ;
- Float_t z ;
- geom->AbsToRelNumbering(digit->GetId(), relid) ;
- geom->RelPosInModule(relid, x, z) ;
+ Double_t xCPV,zCPV ; //EMC-projected coordinates of CPV cluster
+ TVector3 cpvGlobal; // Global position of the CPV recpoint
+ fGeom->GetGlobalPHOS((AliPHOSRecPoint*)cpvClu,cpvGlobal);
+ Double_t vtxCPV[3]={cpvGlobal.X(),cpvGlobal.Y(),cpvGlobal.Z()} ;
+ Int_t dummyMod ;
- Float_t energy = maxAtEnergy[iDigit] ;
+ 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 ;
+ }
- gMinuit->mnparm(index, "x", x, 0.1, 0, 0, ierflg) ;
- index++ ;
- if(ierflg != 0){
- cout << "PHOS Unfolding> Unable to set initial value for fit procedure : x = " << x << endl ;
- return kFALSE;
+ //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
+ if ((TMath::Abs(xyz[0])+TMath::Abs(xyz[1])+TMath::Abs(xyz[2]))<=0)
+ 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;
+ }
}
- gMinuit->mnparm(index, "z", z, 0.1, 0, 0, ierflg) ;
- index++ ;
- if(ierflg != 0){
- cout << "PHOS Unfolding> Unable to set initial value for fit procedure : z = " << z << endl ;
- return kFALSE;
+
+ 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]);
+ fGeom->ImpactOnEmc(vtxCPV,vecP.Theta(),vecP.Phi(),dummyMod,zCPV,xCPV) ;
+ }
}
- gMinuit->mnparm(index, "Energy", energy , 0.05*energy, 0., 4.*energy, ierflg) ;
- index++ ;
- if(ierflg != 0){
- cout << "PHOS Unfolding> Unable to set initial value for fit procedure : energy = " << energy << endl ;
- return kFALSE;
+
+ if(minDistance < fRtpc ){
+ trackindex = iClosestTrack ;
}
}
-
- Double_t p0 = 0.1 ; // "Tolerance" Evaluation stops when EDM = 0.0001*p0 ; The number of function call slightly
- // depends on it.
- Double_t p1 = 1.0 ;
- Double_t p2 = 0.0 ;
-
- gMinuit->mnexcm("SET STR", &p2, 0, ierflg) ; // force TgMinuit to reduce function calls
- gMinuit->mnexcm("SET GRA", &p1, 1, ierflg) ; // force TMinuit to use my gradient
- gMinuit->SetMaxIterations(5);
- gMinuit->mnexcm("SET NOW", &p2 , 0, ierflg) ; // No Warnings
- gMinuit->mnexcm("MIGRAD", &p0, 0, ierflg) ; // minimize
- if(ierflg == 4){ // Minimum not found
- cout << "PHOS Unfolding> Fit not converged, cluster abandoned "<< endl ;
- return kFALSE ;
- }
- for(index = 0; index < nPar; index++){
- Double_t err ;
- Double_t val ;
- gMinuit->GetParameter(index, val, err) ; // Returns value and error of parameter index
- fitparameters[index] = val ;
- }
- return kTRUE;
-
+ 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
+ fGeom->ImpactOnEmc(vtxCPV,cpvGlobal.Theta(),cpvGlobal.Phi(),dummyMod,zCPV,xCPV) ;
+ dx=xCPV - vecEmc.X() ;
+ dz=zCPV - vecEmc.Z() ;
+ }
+ return ;
}
-
//____________________________________________________________________________
-void AliPHOSTrackSegmentMakerv1::FillOneModule(DigitsList * dl, RecPointsList * emcIn, TObjArray * emcOut,
- RecPointsList * ppsdIn, TObjArray * ppsdOutUp,
- TObjArray * ppsdOutLow, Int_t & phosmod, Int_t & emcStopedAt,
- Int_t & ppsdStopedAt)
+void AliPHOSTrackSegmentMakerv1::Init()
{
- // Unfold clusters and fill xxxOut arrays with clusters from one PHOS module
-
- AliPHOSEmcRecPoint * emcRecPoint ;
- AliPHOSPpsdRecPoint * ppsdRecPoint ;
- Int_t index ;
+ // Make all memory allocations that are not possible in default constructor
- Int_t nEmcUnfolded = emcIn->GetEntries() ;
- for(index = emcStopedAt; index < nEmcUnfolded; index++){
- emcRecPoint = (AliPHOSEmcRecPoint *) (*emcIn)[index] ;
-
- if(emcRecPoint->GetPHOSMod() != phosmod )
- break ;
-
- Int_t nMultipl = emcRecPoint->GetMultiplicity() ;
- Int_t * maxAt = new Int_t[nMultipl] ;
- Float_t * maxAtEnergy = new Float_t[nMultipl] ;
- Int_t nMax = emcRecPoint->GetNumberOfLocalMax(maxAt, maxAtEnergy) ;
-
- if(nMax <= 1 ) // if cluster is very flat (no pronounced maximum) then nMax = 0
- emcOut->Add(emcRecPoint) ;
- else if (fUnfoldFlag) {
- UnfoldClusters(dl, emcIn, emcRecPoint, nMax, maxAt, maxAtEnergy, emcOut) ;
- emcIn->Remove(emcRecPoint);
- emcIn->Compress() ;
- nEmcUnfolded-- ;
- index-- ;
- }
-
- delete[] maxAt ;
- delete[] maxAtEnergy ;
- }
- emcStopedAt = index ;
-
- for(index = ppsdStopedAt; index < ppsdIn->GetEntries(); index++){
- ppsdRecPoint = (AliPHOSPpsdRecPoint *) (*ppsdIn)[index] ;
- if(ppsdRecPoint->GetPHOSMod() != phosmod )
- break ;
- if(ppsdRecPoint->GetUp() )
- ppsdOutUp->Add(ppsdRecPoint) ;
- else
- ppsdOutLow->Add(ppsdRecPoint) ;
- }
- ppsdStopedAt = index ;
-
- emcOut->Sort() ;
- ppsdOutUp->Sort() ;
- ppsdOutLow->Sort() ;
+ fLinkUpArray = new TClonesArray("AliPHOSLink", 1000);
+ fTrackSegments = new TClonesArray("AliPHOSTrackSegment",100);
+ fTrackSegments->SetName("TRACKS");
}
+
//____________________________________________________________________________
-Float_t AliPHOSTrackSegmentMakerv1::GetDistanceInPHOSPlane(AliPHOSEmcRecPoint * emcclu,AliPHOSPpsdRecPoint * PpsdClu, Bool_t &toofar)
+void AliPHOSTrackSegmentMakerv1::InitParameters()
{
- // Calculates the distance between the EMC RecPoint and the PPSD RecPoint
-
- Float_t r = fR0 ;
-
- TVector3 vecEmc ;
- TVector3 vecPpsd ;
-
- emcclu->GetLocalPosition(vecEmc) ;
- PpsdClu->GetLocalPosition(vecPpsd) ;
- if(emcclu->GetPHOSMod() == PpsdClu->GetPHOSMod()){
- if(vecPpsd.X() >= vecEmc.X() - fDelta ){
- if(vecPpsd.Z() >= vecEmc.Z() - fDelta ){
- AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance() ;
- // Correct to difference in CPV and EMC position due to different distance to center.
- // we assume, that particle moves from center
- Float_t dCPV = geom->GetIPtoOuterCoverDistance();
- Float_t dEMC = geom->GetIPtoCrystalSurface() ;
- dEMC = dEMC / dCPV ;
- vecPpsd = dEMC * vecPpsd - vecEmc ;
- r = vecPpsd.Mag() ;
- } // if zPpsd >= zEmc - fDelta
- toofar = kFALSE ;
- } // if xPpsd >= xEmc - fDelta
- else
- toofar = kTRUE ;
- }
- else
- toofar = kTRUE ;
-
- return r ;
+ //Initializes parameters
+ fRcpv = 10. ;
+ fRtpc = 4. ;
+ fEmcFirst = 0 ;
+ fEmcLast = 0 ;
+ fCpvFirst = 0 ;
+ fCpvLast = 0 ;
+ fLinkUpArray = 0 ;
+ fWrite = kTRUE ;
}
+
//____________________________________________________________________________
-void AliPHOSTrackSegmentMakerv1::MakeLinks(TObjArray * emcRecPoints, TObjArray * ppsdRecPointsUp,
- TObjArray * ppsdRecPointsLow, TClonesArray * linklowArray,
- TClonesArray *linkupArray)
+void AliPHOSTrackSegmentMakerv1::MakeLinks()const
{
- // Finds distances (links) between all EMC and PPSD clusters, which are not further apart from each other than fR0
-
- TIter nextEmc(emcRecPoints) ;
- Int_t iEmcClu = 0 ;
+ // Finds distances (links) between all EMC and CPV clusters,
+ // which are not further apart from each other than fRcpv
+ // and sort them in accordance with this distance
- AliPHOSPpsdRecPoint * ppsdlow ;
- AliPHOSPpsdRecPoint * ppsdup ;
+ fLinkUpArray->Clear() ;
+
+ AliPHOSCpvRecPoint * cpv ;
AliPHOSEmcRecPoint * emcclu ;
-
- Int_t iLinkLow = 0 ;
+
Int_t iLinkUp = 0 ;
- while( (emcclu = (AliPHOSEmcRecPoint*)nextEmc() ) ) {
- Bool_t toofar ;
- TIter nextPpsdLow(ppsdRecPointsLow ) ;
- Int_t iPpsdLow = 0 ;
-
- while( (ppsdlow = (AliPHOSPpsdRecPoint*)nextPpsdLow() ) ) {
- Float_t r = GetDistanceInPHOSPlane(emcclu, ppsdlow, toofar) ;
-
- if(toofar)
- break ;
- if(r < fR0)
- new( (*linklowArray)[iLinkLow++]) AliPHOSLink(r, iEmcClu, iPpsdLow) ;
-
- iPpsdLow++ ;
-
- }
-
- TIter nextPpsdUp(ppsdRecPointsUp ) ;
- Int_t iPpsdUp = 0 ;
-
- while( (ppsdup = (AliPHOSPpsdRecPoint*)nextPpsdUp() ) ) {
- Float_t r = GetDistanceInPHOSPlane(emcclu, ppsdup, toofar) ;
-
- if(toofar)
- break ;
- if(r < fR0)
- new( (*linkupArray)[iLinkUp++]) AliPHOSLink(r, iEmcClu, iPpsdUp) ;
-
- iPpsdUp++ ;
+ Int_t iEmcRP;
+ for(iEmcRP = fEmcFirst; iEmcRP < fEmcLast; iEmcRP++ ) {
+ emcclu = dynamic_cast<AliPHOSEmcRecPoint *>(fEMCRecPoints->At(iEmcRP)) ;
+
+ //Bool_t toofar ;
+ Int_t iCpv = 0 ;
+ for(iCpv = fCpvFirst; iCpv < fCpvLast;iCpv++ ) {
+ cpv = dynamic_cast<AliPHOSCpvRecPoint *>(fCPVRecPoints->At(iCpv)) ;
+ Int_t track = -1 ;
+ 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) ;
+ }
}
-
- iEmcClu++ ;
-
- } // while nextEmC
+ }
- linklowArray->Sort() ; //first links with smallest distances
- linkupArray->Sort() ;
+ fLinkUpArray->Sort() ; //first links with smallest distances
}
-
+
//____________________________________________________________________________
-void AliPHOSTrackSegmentMakerv1::MakePairs(TObjArray * emcRecPoints, TObjArray * ppsdRecPointsUp,
- TObjArray * ppsdRecPointsLow, TClonesArray * linklowArray,
- TClonesArray * linkupArray, TrackSegmentsList * trsl)
+void AliPHOSTrackSegmentMakerv1::MakePairs()
{
-
- // Finds the smallest links and makes pairs of PPSD and EMC clusters with smallest distance
+ // Using the previously made list of "links", we found the smallest link - i.e.
+ // link with the least distance between EMC and CPV and pointing to still
+ // unassigned RecParticles. We assign these RecPoints to TrackSegment and
+ // remove them from the list of "unassigned".
+
+ //Make arrays to mark clusters already chosen
+ Int_t * emcExist = 0;
+ if(fEmcLast > fEmcFirst)
+ emcExist = new Int_t[fEmcLast-fEmcFirst] ;
- TIter nextLow(linklowArray) ;
- TIter nextUp(linkupArray) ;
+ Int_t index;
+ for(index = 0; index <fEmcLast-fEmcFirst; index ++)
+ emcExist[index] = 1 ;
+
+ Bool_t * cpvExist = 0;
+ if(fCpvLast > fCpvFirst)
+ cpvExist = new Bool_t[fCpvLast-fCpvFirst] ;
+ for(index = 0; index <fCpvLast-fCpvFirst; index ++)
+ cpvExist[index] = kTRUE ;
+
+
+ // Finds the smallest links and makes pairs of CPV and EMC clusters with smallest distance
+ TIter nextUp(fLinkUpArray) ;
- AliPHOSLink * linkLow ;
AliPHOSLink * linkUp ;
+
+ AliPHOSCpvRecPoint * nullpointer = 0 ;
+
+ while ( (linkUp = static_cast<AliPHOSLink *>(nextUp()) ) ){
- AliPHOSEmcRecPoint * emc ;
- AliPHOSPpsdRecPoint * ppsdLow ;
- AliPHOSPpsdRecPoint * ppsdUp ;
-
- AliPHOSRecPoint * nullpointer = 0 ;
+ if(emcExist[linkUp->GetEmc()-fEmcFirst] != -1){
- while ( (linkLow = (AliPHOSLink *)nextLow() ) ){
- emc = (AliPHOSEmcRecPoint *) emcRecPoints->At(linkLow->GetEmc()) ;
- ppsdLow = (AliPHOSPpsdRecPoint *) ppsdRecPointsLow->At(linkLow->GetPpsd()) ;
- if( (emc) && (ppsdLow) ){ // RecPoints not removed yet
- ppsdUp = 0 ;
-
- while ( (linkUp = (AliPHOSLink *)nextUp() ) ){
- if(linkLow->GetEmc() == linkUp->GetEmc() ){
- ppsdUp = (AliPHOSPpsdRecPoint *) ppsdRecPointsUp->At(linkUp->GetPpsd()) ;
- break ;
- }
-
- } // while nextUp
-
- nextUp.Reset();
-// AliPHOSTrackSegment * subtr = new AliPHOSTrackSegment(emc, ppsdUp, ppsdLow ) ;
-// trsl->Add(subtr) ;
- new( (*trsl)[fNTrackSegments] ) AliPHOSTrackSegment(emc, ppsdUp, ppsdLow ) ;
- fNTrackSegments++ ;
- emcRecPoints->AddAt(nullpointer,linkLow->GetEmc()) ;
- ppsdRecPointsLow->AddAt(nullpointer,linkLow->GetPpsd()) ;
-
- if(ppsdUp)
- ppsdRecPointsUp->AddAt(nullpointer,linkUp->GetPpsd()) ;
+ if(cpvExist[linkUp->GetCpv()-fCpvFirst]){ //CPV still exist
+ Float_t dx,dz ;
+ linkUp->GetXZ(dx,dz) ;
+ new ((* fTrackSegments)[fNTrackSegments])
+ AliPHOSTrackSegment(dynamic_cast<AliPHOSEmcRecPoint *>(fEMCRecPoints->At(linkUp->GetEmc())) ,
+ dynamic_cast<AliPHOSCpvRecPoint *>(fCPVRecPoints->At(linkUp->GetCpv())) ,
+ linkUp->GetTrack(),dx,dz) ;
+ (dynamic_cast<AliPHOSTrackSegment *>(fTrackSegments->At(fNTrackSegments)))->SetIndexInList(fNTrackSegments);
+ fNTrackSegments++ ;
+ emcExist[linkUp->GetEmc()-fEmcFirst] = -1 ; //Mark emc that Cpv was found
+ //mark CPV recpoint as already used
+ cpvExist[linkUp->GetCpv()-fCpvFirst] = kFALSE ;
+ } //if CpvUp still exist
}
- }
-
- TIter nextEmc(emcRecPoints) ;
- nextEmc.Reset() ;
-
- while( (emc = (AliPHOSEmcRecPoint*)nextEmc()) ){ //to create pairs if no ppsdlow
- ppsdLow = 0 ;
- ppsdUp = 0 ;
-
- while ( (linkUp = (AliPHOSLink *)nextUp() ) ){
-
- if(emcRecPoints->IndexOf(emc) == linkUp->GetEmc() ){
- ppsdUp = (AliPHOSPpsdRecPoint *) ppsdRecPointsUp->At(linkUp->GetPpsd()) ;
- break ;
- }
-
+ }
+
+ //look through emc recPoints left without CPV
+ if(emcExist){ //if there is emc rec point
+ 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++;
+ }
}
-// AliPHOSTrackSegment * subtr = new AliPHOSTrackSegment(emc, ppsdUp, ppsdLow ) ;
-// trsl->Add(subtr) ;
- new( (*trsl)[fNTrackSegments] ) AliPHOSTrackSegment(emc, ppsdUp, ppsdLow ) ;
- fNTrackSegments++ ;
-
-
- if(ppsdUp)
- ppsdRecPointsUp->AddAt(nullpointer,linkUp->GetPpsd()) ;
}
-
+ delete [] emcExist ;
+ delete [] cpvExist ;
}
//____________________________________________________________________________
-void AliPHOSTrackSegmentMakerv1::MakeTrackSegments(DigitsList * dl, RecPointsList * emcl,
- RecPointsList * ppsdl, TrackSegmentsList * trsl)
+void AliPHOSTrackSegmentMakerv1::Clusters2TrackSegments(Option_t *option)
{
- // Makes the track segments out of the list of EMC and PPSD Recpoints and stores them in a list
-
- Int_t phosmod = 1 ;
- Int_t emcStopedAt = 0 ;
- Int_t ppsdStopedAt = 0 ;
-
- TObjArray * emcRecPoints = new TObjArray(100) ; // these arrays keep pointers
- TObjArray * ppsdRecPointsUp = new TObjArray(100) ; // to RecPoints, which are
- TObjArray * ppsdRecPointsLow = new TObjArray(100) ; // kept in TClonesArray's emcl and ppsdl
-
-
- TClonesArray * linklowArray = new TClonesArray("AliPHOSLink", 100);
- TClonesArray * linkupArray = new TClonesArray("AliPHOSLink", 100);
+ // Steering method to perform track segment construction for the current event
+ // Returns an array with the found track-segments.
- AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance() ;
-
- while(phosmod <= geom->GetNModules() ){
-
- FillOneModule(dl, emcl, emcRecPoints, ppsdl, ppsdRecPointsUp, ppsdRecPointsLow, phosmod, emcStopedAt, ppsdStopedAt) ;
-
- MakeLinks(emcRecPoints, ppsdRecPointsUp, ppsdRecPointsLow, linklowArray, linkupArray) ;
-
- MakePairs(emcRecPoints, ppsdRecPointsUp, ppsdRecPointsLow, linklowArray, linkupArray, trsl) ;
+ if(strstr(option,"tim"))
+ gBenchmark->Start("PHOSTSMaker");
- emcRecPoints->Clear() ;
-
- ppsdRecPointsUp->Clear() ;
-
- ppsdRecPointsLow->Clear() ;
-
- linkupArray->Clear() ;
-
- linklowArray->Clear() ;
-
- phosmod++ ;
+ if(strstr(option,"print")) {
+ Print() ;
+ return ;
}
- delete emcRecPoints ;
- emcRecPoints = 0 ;
-
- delete ppsdRecPointsUp ;
- ppsdRecPointsUp = 0 ;
-
- delete ppsdRecPointsLow ;
- ppsdRecPointsLow = 0 ;
-
- delete linkupArray ;
- linkupArray = 0 ;
-
- delete linklowArray ;
- linklowArray = 0 ;
-}
-
-//____________________________________________________________________________
-Double_t AliPHOSTrackSegmentMakerv1::ShowerShape(Double_t r)
-{
- // Shape of the shower (see PHOS TDR)
- // If you change this function, change also the gradien evaluation in ChiSquare()
-
- Double_t r4 = r*r*r*r ;
- Double_t r295 = TMath::Power(r, 2.95) ;
- Double_t shape = TMath::Exp( -r4 * (1. / (2.32 + 0.26 * r4) + 0.0316 / (1 + 0.0652 * r295) ) ) ;
- return shape ;
-}
-
-//____________________________________________________________________________
-void AliPHOSTrackSegmentMakerv1::UnfoldClusters(DigitsList * dl, RecPointsList * emcIn, AliPHOSEmcRecPoint * iniEmc,
- Int_t nMax, int * maxAt, Float_t * maxAtEnergy, TObjArray * emcList)
-{
- // Performs the unfolding of a cluster with nMax overlapping showers
- // This is time consuming (use the (Un)SetUnfolFlag() )
+
+ //Make some initializations
+ fNTrackSegments = 0 ;
+ fEmcFirst = 0 ;
+ fEmcLast = 0 ;
+ fCpvFirst = 0 ;
+ fCpvLast = 0 ;
- Int_t nPar = 3 * nMax ;
- Float_t * fitparameters = new Float_t[nPar] ;
- AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance() ;
+ fTrackSegments->Clear();
- Bool_t rv = FindFit(iniEmc, maxAt, maxAtEnergy, nPar, fitparameters) ;
- if( !rv ) {
- // Fit failed, return and remove cluster
- delete[] fitparameters ;
- return ;
- }
-
- Float_t xDigit ;
- Float_t zDigit ;
- Int_t relid[4] ;
-
- Int_t nDigits = iniEmc->GetMultiplicity() ;
- Float_t xpar ;
- Float_t zpar ;
- Float_t epar ;
- Float_t distance ;
- Float_t ratio ;
- Float_t * efit = new Float_t[nDigits] ;
- Int_t iparam ;
- Int_t iDigit ;
-
- AliPHOSDigit * digit ;
- AliPHOSEmcRecPoint * emcRP ;
- Int_t * emcDigits = iniEmc->GetDigitsList() ;
- Float_t * emcEnergies = iniEmc->GetEnergiesList() ;
-
- Int_t iRecPoint = emcIn->GetEntries() ;
-
- for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
- digit = (AliPHOSDigit *) emcDigits[iDigit];
- geom->AbsToRelNumbering(digit->GetId(), relid) ;
- geom->RelPosInModule(relid, xDigit, zDigit) ;
- efit[iDigit] = 0;
- iparam = 0 ;
+ // if(!ReadRecPoints(ievent)) continue; //reads RecPoints for event ievent
- while(iparam < nPar ){
- xpar = fitparameters[iparam] ;
- zpar = fitparameters[iparam+1] ;
- epar = fitparameters[iparam+2] ;
- iparam += 3 ;
- distance = (xDigit - xpar) * (xDigit - xpar) + (zDigit - zpar) * (zDigit - zpar) ;
- distance = TMath::Sqrt(distance) ;
- efit[iDigit] += epar * AliPHOSTrackSegmentMakerv1::ShowerShape(distance) ;
- }
+ for(fModule = 1; fModule <= fGeom->GetNModules() ; fModule++ ) {
+ FillOneModule() ;
+ MakeLinks() ;
+ MakePairs() ;
}
+
+ if(strstr(option,"deb"))
+ PrintTrackSegments(option);
- iparam = 0 ;
- Float_t eDigit ;
-
- while(iparam < nPar ){
- xpar = fitparameters[iparam] ;
- zpar = fitparameters[iparam+1] ;
- epar = fitparameters[iparam+2] ;
- iparam += 3 ;
- new ((*emcIn)[iRecPoint]) AliPHOSEmcRecPoint( iniEmc->GetLogWeightCut(), iniEmc->GetLocMaxCut() ) ;
- emcRP = (AliPHOSEmcRecPoint *) emcIn->At(iRecPoint++);
-
- for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
- digit = (AliPHOSDigit *) emcDigits[iDigit];
- geom->AbsToRelNumbering(digit->GetId(), relid) ;
- geom->RelPosInModule(relid, xDigit, zDigit) ;
- distance = (xDigit - xpar) * (xDigit - xpar) + (zDigit - zpar) * (zDigit - zpar) ;
- distance = TMath::Sqrt(distance) ;
- ratio = epar * AliPHOSTrackSegmentMakerv1::ShowerShape(distance) / efit[iDigit] ;
- eDigit = emcEnergies[iDigit] * ratio ;
- emcRP->AddDigit( *digit, eDigit ) ;
- }
-
- emcList->Add(emcRP) ;
-
+ if(strstr(option,"tim")){
+ gBenchmark->Stop("PHOSTSMaker");
+ Info("Exec", "took %f seconds for making TS",
+ gBenchmark->GetCpuTime("PHOSTSMaker"));
}
-
- delete[] fitparameters ;
- delete[] efit ;
-
}
-//______________________________________________________________________________
-void UnfoldingChiSquare(Int_t & nPar, Double_t * Grad, Double_t & fret, Double_t * x, Int_t iflag)
+//____________________________________________________________________________
+void AliPHOSTrackSegmentMakerv1::Print(const Option_t *)const
{
- // Calculates th Chi square for the cluster unfolding minimization
- // Number of parameters, Gradient, Chi squared, parameters, what to do
-
- AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance() ;
+ // Print TrackSegmentMaker parameters
+
+ TString message("") ;
+ if( strcmp(GetName(), "") != 0 ) {
+ message = "\n======== AliPHOSTrackSegmentMakerv1 ========\n" ;
+ message += "Making Track segments\n" ;
+ message += "with parameters:\n" ;
+ message += " Maximal EMC - CPV distance (cm) %f\n" ;
+ message += "============================================\n" ;
+ Info("Print", message.Data(),fRcpv) ;
+ }
+ else
+ Info("Print", "AliPHOSTrackSegmentMakerv1 not initialized ") ;
+}
- AliPHOSEmcRecPoint * emcRP = (AliPHOSEmcRecPoint *) gMinuit->GetObjectFit() ; // EmcRecPoint to fit
- Int_t * emcDigits = emcRP->GetDigitsList() ;
- Float_t * emcEnergies = emcRP->GetEnergiesList() ;
- fret = 0. ;
- Int_t iparam ;
+//____________________________________________________________________________
+void AliPHOSTrackSegmentMakerv1::PrintTrackSegments(Option_t * option)
+{
+ // option deb - prints # of found TrackSegments
+ // option deb all - prints as well indexed of found RecParticles assigned to the TS
- if(iflag == 2)
- for(iparam = 0 ; iparam < nPar ; iparam++)
- Grad[iparam] = 0 ; // Will evaluate gradient
-
- Double_t efit ;
+ Info("PrintTrackSegments", "Results from TrackSegmentMaker:") ;
+ printf(" Found %d TrackSegments\n", fTrackSegments->GetEntriesFast() );
- AliPHOSDigit * digit ;
- Int_t iDigit = 0 ;
-
- while ( (digit = (AliPHOSDigit *)emcDigits[iDigit] )){
- Int_t relid[4] ;
- Float_t xDigit ;
- Float_t zDigit ;
- geom->AbsToRelNumbering(digit->GetId(), relid) ;
- geom->RelPosInModule(relid, xDigit, zDigit) ;
-
- if(iflag == 2){ // calculate gradient
- Int_t iParam = 0 ;
- efit = 0 ;
- while(iParam < nPar ){
- Double_t distance = (xDigit - x[iParam]) * (xDigit - x[iParam]) ;
- iParam++ ;
- distance += (zDigit - x[iParam]) * (zDigit - x[iParam]) ;
- distance = TMath::Sqrt( distance ) ;
- iParam++ ;
- efit += x[iParam] * AliPHOSTrackSegmentMakerv1::ShowerShape(distance) ;
- iParam++ ;
- }
- Double_t sum = 2. * (efit - emcEnergies[iDigit]) / emcEnergies[iDigit] ; // Here we assume, that sigma = sqrt(E)
- iParam = 0 ;
- while(iParam < nPar ){
- Double_t xpar = x[iParam] ;
- Double_t zpar = x[iParam+1] ;
- Double_t epar = x[iParam+2] ;
- Double_t dr = TMath::Sqrt( (xDigit - xpar) * (xDigit - xpar) + (zDigit - zpar) * (zDigit - zpar) );
- Double_t shape = sum * AliPHOSTrackSegmentMakerv1::ShowerShape(dr) ;
- Double_t r4 = dr*dr*dr*dr ;
- Double_t r295 = TMath::Power(dr,2.95) ;
- Double_t deriv =-4. * dr*dr * ( 2.32 / ( (2.32 + 0.26 * r4) * (2.32 + 0.26 * r4) ) +
- 0.0316 * (1. + 0.0171 * r295) / ( ( 1. + 0.0652 * r295) * (1. + 0.0652 * r295) ) ) ;
-
- Grad[iParam] += epar * shape * deriv * (xpar - xDigit) ; // Derivative over x
- iParam++ ;
- Grad[iParam] += epar * shape * deriv * (zpar - zDigit) ; // Derivative over z
- iParam++ ;
- Grad[iParam] += shape ; // Derivative over energy
- iParam++ ;
- }
- }
- efit = 0;
- iparam = 0 ;
- while(iparam < nPar ){
- Double_t xpar = x[iparam] ;
- Double_t zpar = x[iparam+1] ;
- Double_t epar = x[iparam+2] ;
- iparam += 3 ;
- Double_t distance = (xDigit - xpar) * (xDigit - xpar) + (zDigit - zpar) * (zDigit - zpar) ;
- distance = TMath::Sqrt(distance) ;
- efit += epar * AliPHOSTrackSegmentMakerv1::ShowerShape(distance) ;
- }
- fret += (efit-emcEnergies[iDigit])*(efit-emcEnergies[iDigit])/emcEnergies[iDigit] ;
- // Here we assume, that sigma = sqrt(E)
- iDigit++ ;
+ if(strstr(option,"all")) { // printing found TS
+ printf("TrackSegment # EMC RP# CPV RP#\n") ;
+ Int_t index;
+ for (index = 0 ; index <fTrackSegments->GetEntriesFast() ; index++) {
+ AliPHOSTrackSegment * ts = (AliPHOSTrackSegment * )fTrackSegments->At(index) ;
+ printf(" %d %d %d \n", ts->GetIndexInList(), ts->GetEmcIndex(), ts->GetCpvIndex() ) ;
+ }
}
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff