* provided "as is" without express or implied warranty. *
**************************************************************************/
+/* $Id$ */
+
+/* History of cvs commits:
+ *
+ * $Log$
+ * Revision 1.57 2007/04/05 10:18:58 policheh
+ * Introduced distance to nearest bad crystal.
+ *
+ * Revision 1.56 2007/03/06 06:47:28 kharlov
+ * DP:Possibility to use actual vertex position added
+ *
+ * Revision 1.55 2007/01/19 20:31:19 kharlov
+ * Improved formatting for Print()
+ *
+ * Revision 1.54 2006/08/28 10:01:56 kharlov
+ * Effective C++ warnings fixed (Timur Pocheptsov)
+ *
+ * Revision 1.53 2005/12/20 14:28:47 hristov
+ * Additional protection
+ *
+ * Revision 1.52 2005/05/28 14:19:04 schutz
+ * Compilation warnings fixed by T.P.
+ *
+ */
+
//_________________________________________________________________________
-// Rec Point in the PHOS EM calorimeter
-//*-- Author : Dmitri Peressounko RRC KI
-//////////////////////////////////////////////////////////////////////////////
+// RecPoint implementation for PHOS-EMC
+// An EmcRecPoint is a cluster of digits
+//*--
+//*-- Author: Dmitri Peressounko (RRC KI & SUBATECH)
-// --- ROOT system ---
+// --- ROOT system ---
+#include "TH2.h"
#include "TMath.h"
+#include "TCanvas.h"
+#include "TGraph.h"
// --- Standard library ---
-#include "iostream.h"
-
// --- AliRoot header files ---
-
+#include "AliLog.h"
+#include "AliPHOSLoader.h"
+#include "AliGenerator.h"
#include "AliPHOSGeometry.h"
+#include "AliPHOSDigit.h"
#include "AliPHOSEmcRecPoint.h"
-#include "AliRun.h"
-
+
ClassImp(AliPHOSEmcRecPoint)
//____________________________________________________________________________
-AliPHOSEmcRecPoint::AliPHOSEmcRecPoint(Float_t W0, Float_t LocMaxCut)
- : AliPHOSRecPoint()
+AliPHOSEmcRecPoint::AliPHOSEmcRecPoint() :
+ AliPHOSRecPoint(),
+ fCoreEnergy(0.), fDispersion(0.),
+ fEnergyList(0), fTime(-1.), fNExMax(0),
+ fM2x(0.), fM2z(0.), fM3x(0.), fM4z(0.),
+ fPhixe(0.), fDistToBadCrystal(-1),fDebug(0)
{
// ctor
+ fMulDigit = 0 ;
+ fAmp = 0. ;
+ fLocPos.SetX(1000000.) ; //Local position should be evaluated
+}
+//____________________________________________________________________________
+AliPHOSEmcRecPoint::AliPHOSEmcRecPoint(const char * opt) :
+ AliPHOSRecPoint(opt),
+ fCoreEnergy(0.), fDispersion(0.),
+ fEnergyList(0), fTime(-1.), fNExMax(0),
+ fM2x(0.), fM2z(0.), fM3x(0.), fM4z(0.),
+ fPhixe(0.), fDistToBadCrystal(-1), fDebug(0)
+{
+ // ctor
fMulDigit = 0 ;
fAmp = 0. ;
- fEnergyList = new Float_t[fMaxDigit];
- AliPHOSGeometry * PHOSGeom = (AliPHOSGeometry *) fGeom ;
- fDelta = PHOSGeom->GetCrystalSize(0) ;
- fW0 = W0 ;
- fLocMaxCut = LocMaxCut ;
fLocPos.SetX(1000000.) ; //Local position should be evaluated
}
-// //____________________________________________________________________________
-// AliPHOSEmcRecPoint::~AliPHOSEmcRecPoint()
-// {
-// // dtor
-// }
+//____________________________________________________________________________
+AliPHOSEmcRecPoint::AliPHOSEmcRecPoint(const AliPHOSEmcRecPoint & rp) :
+ AliPHOSRecPoint(rp),
+ fCoreEnergy(rp.fCoreEnergy), fDispersion(rp.fDispersion),
+ fEnergyList(0), fTime(rp.fTime), fNExMax(rp.fNExMax),
+ fM2x(rp.fM2x), fM2z(rp.fM2z), fM3x(rp.fM3x), fM4z(rp.fM4z),
+ fPhixe(rp.fPhixe), fDistToBadCrystal(rp.fDistToBadCrystal), fDebug(rp.fDebug)
+{
+ // cpy ctor
+ fMulDigit = rp.fMulDigit ;
+ fAmp = rp.fAmp ;
+ fEnergyList = new Float_t[rp.fMulDigit] ;
+ Int_t index ;
+ for(index = 0 ; index < fMulDigit ; index++)
+ fEnergyList[index] = rp.fEnergyList[index] ;
+}
+
+//____________________________________________________________________________
+AliPHOSEmcRecPoint::~AliPHOSEmcRecPoint()
+{
+ // dtor
+ if ( fEnergyList )
+ delete[] fEnergyList ;
+}
//____________________________________________________________________________
-void AliPHOSEmcRecPoint::AddDigit(AliDigitNew & digit, Float_t Energy)
+void AliPHOSEmcRecPoint::AddDigit(AliPHOSDigit & digit, Float_t Energy)
{
- // adds a digit to the digits list
+ // Adds a digit to the RecPoint
// and accumulates the total amplitude and the multiplicity
+ if(fEnergyList == 0)
+ fEnergyList = new Float_t[fMaxDigit];
+
if ( fMulDigit >= fMaxDigit ) { // increase the size of the lists
- int * tempo = new ( int[fMaxDigit*=2] ) ;
- Float_t * tempoE = new ( Float_t[fMaxDigit*=2] ) ;
- Int_t index ;
-
+ fMaxDigit*=2 ;
+ Int_t * tempo = new Int_t[fMaxDigit];
+ Float_t * tempoE = new Float_t[fMaxDigit];
+
+ Int_t index ;
for ( index = 0 ; index < fMulDigit ; index++ ){
- tempo[index] = fDigitsList[index] ;
+ tempo[index] = fDigitsList[index] ;
tempoE[index] = fEnergyList[index] ;
}
- delete fDigitsList ;
- delete fEnergyList ;
- fDigitsList = tempo ;
- fEnergyList = tempoE ;
- }
+ delete [] fDigitsList ;
+ fDigitsList = new Int_t[fMaxDigit];
+
+ delete [] fEnergyList ;
+ fEnergyList = new Float_t[fMaxDigit];
+
+ for ( index = 0 ; index < fMulDigit ; index++ ){
+ fDigitsList[index] = tempo[index] ;
+ fEnergyList[index] = tempoE[index] ;
+ }
+
+ delete [] tempo ;
+ delete [] tempoE ;
+ } // if
- fDigitsList[fMulDigit] = (int) &digit ;
- fEnergyList[fMulDigit++]= Energy ;
+ fDigitsList[fMulDigit] = digit.GetIndexInList() ;
+ fEnergyList[fMulDigit] = Energy ;
+ fMulDigit++ ;
fAmp += Energy ;
+
+ EvalPHOSMod(&digit) ;
}
//____________________________________________________________________________
-Bool_t AliPHOSEmcRecPoint::AreNeighbours(AliPHOSDigit * digit1, AliPHOSDigit * digit2 )
+Bool_t AliPHOSEmcRecPoint::AreNeighbours(AliPHOSDigit * digit1, AliPHOSDigit * digit2 ) const
{
+ // Tells if (true) or not (false) two digits are neighbors
Bool_t aren = kFALSE ;
- AliPHOSGeometry * PHOSGeom = (AliPHOSGeometry *) fGeom ;
+ AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance() ;
+
Int_t relid1[4] ;
- PHOSGeom->AbsToRelNumbering(digit1->GetId(), relid1) ;
+ phosgeom->AbsToRelNumbering(digit1->GetId(), relid1) ;
Int_t relid2[4] ;
- PHOSGeom->AbsToRelNumbering(digit2->GetId(), relid2) ;
+ phosgeom->AbsToRelNumbering(digit2->GetId(), relid2) ;
- Int_t RowDiff = TMath::Abs( relid1[2] - relid2[2] ) ;
- Int_t ColDiff = TMath::Abs( relid1[3] - relid2[3] ) ;
+ Int_t rowdiff = TMath::Abs( relid1[2] - relid2[2] ) ;
+ Int_t coldiff = TMath::Abs( relid1[3] - relid2[3] ) ;
- if (( ColDiff<=1 ) && ( RowDiff <= 1 ) && (ColDiff+RowDiff > 0))
+ if (( coldiff <= 1 ) && ( rowdiff <= 1 ) && (coldiff + rowdiff > 0))
aren = kTRUE ;
return aren ;
}
//____________________________________________________________________________
-Int_t AliPHOSEmcRecPoint::Compare(TObject * obj)
+Int_t AliPHOSEmcRecPoint::Compare(const TObject * obj) const
{
+ // Compares two RecPoints according to their position in the PHOS modules
+
+ const Float_t delta = 1 ; //Width of "Sorting row". If you changibg this
+ //value (what is senseless) change as vell delta in
+ //AliPHOSTrackSegmentMakerv* and other RecPoints...
Int_t rv ;
AliPHOSEmcRecPoint * clu = (AliPHOSEmcRecPoint *)obj ;
- Int_t PHOSMod1 = this->GetPHOSMod() ;
- Int_t PHOSMod2 = clu->GetPHOSMod() ;
+ Int_t phosmod1 = GetPHOSMod() ;
+ Int_t phosmod2 = clu->GetPHOSMod() ;
- TVector3 LocPos1;
- this->GetLocalPosition(LocPos1) ;
- TVector3 LocPos2;
- clu->GetLocalPosition(LocPos2) ;
+ TVector3 locpos1;
+ GetLocalPosition(locpos1) ;
+ TVector3 locpos2;
+ clu->GetLocalPosition(locpos2) ;
- if(PHOSMod1 == PHOSMod2 ) {
- Int_t rowdif = (Int_t)TMath::Ceil(LocPos1.X()/fDelta)-(Int_t)TMath::Ceil(LocPos2.X()/fDelta) ;
+ if(phosmod1 == phosmod2 ) {
+ Int_t rowdif = (Int_t)TMath::Ceil(locpos1.X()/delta)-(Int_t)TMath::Ceil(locpos2.X()/delta) ;
if (rowdif> 0)
- rv = -1 ;
+ rv = 1 ;
else if(rowdif < 0)
- rv = 1 ;
- else if(LocPos1.Z()>LocPos2.Z())
+ rv = -1 ;
+ else if(locpos1.Z()>locpos2.Z())
rv = -1 ;
else
rv = 1 ;
}
else {
- if(PHOSMod1 < PHOSMod2 )
+ if(phosmod1 < phosmod2 )
rv = -1 ;
else
rv = 1 ;
return rv ;
}
+//______________________________________________________________________________
+void AliPHOSEmcRecPoint::ExecuteEvent(Int_t event, Int_t, Int_t) /*const*/
+{
+
+ // Execute action corresponding to one event
+ // This member function is called when a AliPHOSRecPoint is clicked with the locator
+ //
+ // If Left button is clicked on AliPHOSRecPoint, the digits are switched on
+ // and switched off when the mouse button is released.
+
+
+ AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance();
+
+ static TGraph * digitgraph = 0 ;
+
+ if (!gPad->IsEditable()) return;
+
+ TH2F * histo = 0 ;
+ TCanvas * histocanvas ;
+
+
+ //try to get run loader from default event folder
+ AliRunLoader* rn = AliRunLoader::GetRunLoader(AliConfig::GetDefaultEventFolderName());
+ if (rn == 0x0)
+ {
+ AliError(Form("Cannot find Run Loader in Default Event Folder"));
+ return;
+ }
+ AliPHOSLoader* gime = dynamic_cast<AliPHOSLoader*>(rn->GetLoader("PHOSLoader"));
+ if (gime == 0x0)
+ {
+ AliError(Form("Cannot find PHOS Loader from Run Loader"));
+ return;
+ }
+
+
+ const TClonesArray * digits = gime->Digits() ;
+
+ switch (event) {
+
+ case kButton1Down: {
+ AliPHOSDigit * digit ;
+ Int_t iDigit;
+ Int_t relid[4] ;
+
+ const Int_t kMulDigit = AliPHOSEmcRecPoint::GetDigitsMultiplicity() ;
+ Float_t * xi = new Float_t[kMulDigit] ;
+ Float_t * zi = new Float_t[kMulDigit] ;
+
+ // create the histogram for the single cluster
+ // 1. gets histogram boundaries
+ Float_t ximax = -999. ;
+ Float_t zimax = -999. ;
+ Float_t ximin = 999. ;
+ Float_t zimin = 999. ;
+
+ for(iDigit=0; iDigit<kMulDigit; iDigit++) {
+ digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
+ phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
+ phosgeom->RelPosInModule(relid, xi[iDigit], zi[iDigit]);
+ if ( xi[iDigit] > ximax )
+ ximax = xi[iDigit] ;
+ if ( xi[iDigit] < ximin )
+ ximin = xi[iDigit] ;
+ if ( zi[iDigit] > zimax )
+ zimax = zi[iDigit] ;
+ if ( zi[iDigit] < zimin )
+ zimin = zi[iDigit] ;
+ }
+ ximax += phosgeom->GetCrystalSize(0) / 2. ;
+ zimax += phosgeom->GetCrystalSize(2) / 2. ;
+ ximin -= phosgeom->GetCrystalSize(0) / 2. ;
+ zimin -= phosgeom->GetCrystalSize(2) / 2. ;
+ Int_t xdim = (int)( (ximax - ximin ) / phosgeom->GetCrystalSize(0) + 0.5 ) ;
+ Int_t zdim = (int)( (zimax - zimin ) / phosgeom->GetCrystalSize(2) + 0.5 ) ;
+
+ // 2. gets the histogram title
+
+ Text_t title[100] ;
+ sprintf(title,"Energy=%1.2f GeV ; Digits ; %d ", GetEnergy(), GetDigitsMultiplicity()) ;
+
+ if (!histo) {
+ delete histo ;
+ histo = 0 ;
+ }
+ histo = new TH2F("cluster3D", title, xdim, ximin, ximax, zdim, zimin, zimax) ;
+
+ Float_t x, z ;
+ for(iDigit=0; iDigit<kMulDigit; iDigit++) {
+ digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
+ phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
+ phosgeom->RelPosInModule(relid, x, z);
+ histo->Fill(x, z, fEnergyList[iDigit] ) ;
+ }
+
+ if (!digitgraph) {
+ digitgraph = new TGraph(kMulDigit,xi,zi);
+ digitgraph-> SetMarkerStyle(5) ;
+ digitgraph-> SetMarkerSize(1.) ;
+ digitgraph-> SetMarkerColor(1) ;
+ digitgraph-> Paint("P") ;
+ }
+
+ // Print() ;
+ histocanvas = new TCanvas("cluster", "a single cluster", 600, 500) ;
+ histocanvas->Draw() ;
+ histo->Draw("lego1") ;
+
+ delete[] xi ;
+ delete[] zi ;
+
+ break;
+ }
+
+ case kButton1Up:
+ if (digitgraph) {
+ delete digitgraph ;
+ digitgraph = 0 ;
+ }
+ break;
+
+ }
+}
//____________________________________________________________________________
-Float_t AliPHOSEmcRecPoint::GetDispersion()
+void AliPHOSEmcRecPoint::EvalDispersion(Float_t logWeight,TClonesArray * digits, TVector3 &vInc)
{
- Float_t D = 0 ;
- Float_t wtot = 0 ;
+ // Calculates the dispersion of the shower at the origine of the RecPoint
+ //DP: should we correct dispersion for non-perpendicular hit????????
+
+ Float_t d = 0. ;
+ Float_t wtot = 0. ;
- TVector3 LocPos;
- GetLocalPosition(LocPos);
- Float_t x = LocPos.X() ;
- Float_t z = LocPos.Z() ;
- // Int_t i = GetPHOSMod() ;
+ Float_t x = 0.;
+ Float_t z = 0.;
AliPHOSDigit * digit ;
- AliPHOSGeometry * PHOSGeom = (AliPHOSGeometry *) fGeom ;
+
+ AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance();
+
+ // Calculates the center of gravity in the local PHOS-module coordinates
Int_t iDigit;
+
for(iDigit=0; iDigit<fMulDigit; iDigit++) {
- digit = (AliPHOSDigit *) fDigitsList[iDigit];
+ digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
Int_t relid[4] ;
Float_t xi ;
Float_t zi ;
- PHOSGeom->AbsToRelNumbering(digit->GetId(), relid) ;
- PHOSGeom->RelPosInModule(relid, xi, zi);
- Float_t w = TMath::Max(0.,fW0+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
- D += w*((xi-x)*(xi-x) + (zi-z)*(zi-z) ) ;
- wtot+=w ;
+ phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
+ phosgeom->RelPosInModule(relid, xi, zi);
+ if (fAmp>0 && fEnergyList[iDigit]>0) {
+ Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
+ x += xi * w ;
+ z += zi * w ;
+ wtot += w ;
+ }
+ else
+ AliError(Form("Wrong energy %f and/or amplitude %f\n", fEnergyList[iDigit], fAmp));
+ }
+ if (wtot>0) {
+ x /= wtot ;
+ z /= wtot ;
+ }
+ else
+ AliError(Form("Wrong weight %f\n", wtot));
+
+
+// Calculates the dispersion in coordinates
+ wtot = 0.;
+ for(iDigit=0; iDigit < fMulDigit; iDigit++) {
+ digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
+ Int_t relid[4] ;
+ Float_t xi ;
+ Float_t zi ;
+ phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
+ phosgeom->RelPosInModule(relid, xi, zi);
+ if (fAmp>0 && fEnergyList[iDigit]>0) {
+ Float_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
+ d += w*((xi-x)*(xi-x) + (zi-z)*(zi-z) ) ;
+ wtot+=w ;
+ }
+ else
+ AliError(Form("Wrong energy %f and/or amplitude %f\n", fEnergyList[iDigit], fAmp));
+ }
+
+
+ if (wtot>0) {
+ d /= wtot ;
+ }
+ else
+ AliError(Form("Wrong weight %f\n", wtot));
+
+ fDispersion = 0;
+ if (d>=0)
+ fDispersion = TMath::Sqrt(d) ;
+
+
+}
+//______________________________________________________________________________
+void AliPHOSEmcRecPoint::EvalCoreEnergy(Float_t logWeight, TClonesArray * digits)
+{
+ // This function calculates energy in the core,
+ // i.e. within a radius rad = 3cm around the center. Beyond this radius
+ // in accordance with shower profile the energy deposition
+ // should be less than 2%
+//DP: non-perpendicular incidence??????????????
+
+ Float_t coreRadius = 3 ;
+
+ Float_t x = 0 ;
+ Float_t z = 0 ;
+
+ AliPHOSDigit * digit ;
+
+ AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance();
+
+ Int_t iDigit;
+
+// Calculates the center of gravity in the local PHOS-module coordinates
+ Float_t wtot = 0;
+ for(iDigit=0; iDigit<fMulDigit; iDigit++) {
+ digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
+ Int_t relid[4] ;
+ Float_t xi ;
+ Float_t zi ;
+ phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
+ phosgeom->RelPosInModule(relid, xi, zi);
+ if (fAmp>0 && fEnergyList[iDigit]>0) {
+ Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
+ x += xi * w ;
+ z += zi * w ;
+ wtot += w ;
+ }
+ else
+ AliError(Form("Wrong energy %f and/or amplitude %f\n", fEnergyList[iDigit], fAmp));
+ }
+ if (wtot>0) {
+ x /= wtot ;
+ z /= wtot ;
+ }
+ else
+ AliError(Form("Wrong weight %f\n", wtot));
+
+
+ for(iDigit=0; iDigit < fMulDigit; iDigit++) {
+ digit = (AliPHOSDigit *) ( digits->At(fDigitsList[iDigit]) ) ;
+ Int_t relid[4] ;
+ Float_t xi ;
+ Float_t zi ;
+ phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
+ phosgeom->RelPosInModule(relid, xi, zi);
+ Float_t distance = TMath::Sqrt((xi-x)*(xi-x)+(zi-z)*(zi-z)) ;
+ if(distance < coreRadius)
+ fCoreEnergy += fEnergyList[iDigit] ;
}
- D /= wtot ;
- return TMath::Sqrt(D) ;
}
//____________________________________________________________________________
-void AliPHOSEmcRecPoint::GetElipsAxis(Float_t * lambda)
+void AliPHOSEmcRecPoint::EvalElipsAxis(Float_t logWeight,TClonesArray * digits, TVector3 &vInc)
{
- Float_t wtot = 0. ;
- Float_t x = 0.;
- Float_t z = 0.;
- Float_t Dxx = 0.;
- Float_t Dzz = 0.;
- Float_t Dxz = 0.;
+ // Calculates the axis of the shower ellipsoid
+
+ Double_t wtot = 0. ;
+ Double_t x = 0.;
+ Double_t z = 0.;
+ Double_t dxx = 0.;
+ Double_t dzz = 0.;
+ Double_t dxz = 0.;
AliPHOSDigit * digit ;
- AliPHOSGeometry * PHOSGeom = (AliPHOSGeometry *) fGeom ;
+
+ AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance();
+
Int_t iDigit;
+
for(iDigit=0; iDigit<fMulDigit; iDigit++) {
- digit = (AliPHOSDigit *) fDigitsList[iDigit];
+ digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
Int_t relid[4] ;
Float_t xi ;
Float_t zi ;
- PHOSGeom->AbsToRelNumbering(digit->GetId(), relid) ;
- PHOSGeom->RelPosInModule(relid, xi, zi);
- Float_t w = TMath::Max(0.,fW0+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
- Dxx += w * xi * xi ;
- x += w * xi ;
- Dzz += w * zi * zi ;
- z += w * zi ;
- Dxz += w * xi * zi ;
- wtot += w ;
+ phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
+ phosgeom->RelPosInModule(relid, xi, zi);
+ if (fAmp>0 && fEnergyList[iDigit]>0) {
+ Double_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
+ dxx += w * xi * xi ;
+ x += w * xi ;
+ dzz += w * zi * zi ;
+ z += w * zi ;
+ dxz += w * xi * zi ;
+ wtot += w ;
+ }
+ else
+ AliError(Form("Wrong energy %f and/or amplitude %f\n", fEnergyList[iDigit], fAmp));
+ }
+ if (wtot>0) {
+ dxx /= wtot ;
+ x /= wtot ;
+ dxx -= x * x ;
+ dzz /= wtot ;
+ z /= wtot ;
+ dzz -= z * z ;
+ dxz /= wtot ;
+ dxz -= x * z ;
+
+// //Apply correction due to non-perpendicular incidence
+// Double_t CosX ;
+// Double_t CosZ ;
+// AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
+// AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
+// Double_t DistanceToIP= (Double_t ) phosgeom->GetIPtoCrystalSurface() ;
+
+// CosX = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+x*x) ;
+// CosZ = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+z*z) ;
+
+// dxx = dxx/(CosX*CosX) ;
+// dzz = dzz/(CosZ*CosZ) ;
+// dxz = dxz/(CosX*CosZ) ;
+
+
+ fLambda[0] = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ;
+ if(fLambda[0] > 0)
+ fLambda[0] = TMath::Sqrt(fLambda[0]) ;
+
+ fLambda[1] = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ;
+ if(fLambda[1] > 0) //To avoid exception if numerical errors lead to negative lambda.
+ fLambda[1] = TMath::Sqrt(fLambda[1]) ;
+ else
+ fLambda[1]= 0. ;
+ }
+ else {
+ AliError(Form("Wrong weight %f\n", wtot));
+ fLambda[0]=fLambda[1]=0.;
+ }
+}
+
+//____________________________________________________________________________
+void AliPHOSEmcRecPoint::EvalMoments(Float_t logWeight,TClonesArray * digits, TVector3 &vInc)
+{
+ // Calculate the shower moments in the eigen reference system
+ // M2x, M2z, M3x, M4z
+ // Calculate the angle between the shower position vector and the eigen vector
+
+ Double_t wtot = 0. ;
+ Double_t x = 0.;
+ Double_t z = 0.;
+ Double_t dxx = 0.;
+ Double_t dzz = 0.;
+ Double_t dxz = 0.;
+ Double_t lambda0=0, lambda1=0;
+
+ AliPHOSDigit * digit ;
+
+ AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance() ;
+
+ Int_t iDigit;
+
+ // 1) Find covariance matrix elements:
+ // || dxx dxz ||
+ // || dxz dzz ||
+
+ Float_t xi ;
+ Float_t zi ;
+ Int_t relid[4] ;
+ Double_t w;
+ for(iDigit=0; iDigit<fMulDigit; iDigit++) {
+ digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
+ phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
+ phosgeom->RelPosInModule(relid, xi, zi);
+ if (fAmp>0 && fEnergyList[iDigit]>0) {
+ w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
+ x += w * xi ;
+ z += w * zi ;
+ dxx += w * xi * xi ;
+ dzz += w * zi * zi ;
+ dxz += w * xi * zi ;
+ wtot += w ;
+ }
+ else
+ AliError(Form("Wrong energy %f and/or amplitude %f\n", fEnergyList[iDigit], fAmp));
+
+ }
+ if (wtot>0) {
+ x /= wtot ;
+ z /= wtot ;
+ dxx /= wtot ;
+ dzz /= wtot ;
+ dxz /= wtot ;
+ dxx -= x * x ;
+ dzz -= z * z ;
+ dxz -= x * z ;
+
+ // 2) Find covariance matrix eigen values lambda0 and lambda1
+
+ lambda0 = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ;
+ lambda1 = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ;
+ }
+ else {
+ AliError(Form("Wrong weight %f\n", wtot));
+ lambda0=lambda1=0.;
+ }
+
+ // 3) Find covariance matrix eigen vectors e0 and e1
+
+ TVector2 e0,e1;
+ if (dxz != 0)
+ e0.Set(1.,(lambda0-dxx)/dxz);
+ else
+ e0.Set(0.,1.);
+
+ e0 = e0.Unit();
+ e1.Set(-e0.Y(),e0.X());
+
+ // 4) Rotate cluster tensor from (x,z) to (e0,e1) system
+ // and calculate moments M3x and M4z
+
+ Float_t cosPhi = e0.X();
+ Float_t sinPhi = e0.Y();
+
+ Float_t xiPHOS ;
+ Float_t ziPHOS ;
+ Double_t dx3, dz3, dz4;
+ wtot = 0.;
+ x = 0.;
+ z = 0.;
+ dxx = 0.;
+ dzz = 0.;
+ dxz = 0.;
+ dx3 = 0.;
+ dz3 = 0.;
+ dz4 = 0.;
+ for(iDigit=0; iDigit<fMulDigit; iDigit++) {
+ digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
+ phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
+ phosgeom->RelPosInModule(relid, xiPHOS, ziPHOS);
+ xi = xiPHOS*cosPhi + ziPHOS*sinPhi;
+ zi = ziPHOS*cosPhi - xiPHOS*sinPhi;
+ if (fAmp>0 && fEnergyList[iDigit]>0) {
+ w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
+ x += w * xi ;
+ z += w * zi ;
+ dxx += w * xi * xi ;
+ dzz += w * zi * zi ;
+ dxz += w * xi * zi ;
+ dx3 += w * xi * xi * xi;
+ dz3 += w * zi * zi * zi ;
+ dz4 += w * zi * zi * zi * zi ;
+ wtot += w ;
+ }
+ else
+ AliError(Form("Wrong energy %f and/or amplitude %f\n", fEnergyList[iDigit], fAmp));
+ }
+ if (wtot>0) {
+ x /= wtot ;
+ z /= wtot ;
+ dxx /= wtot ;
+ dzz /= wtot ;
+ dxz /= wtot ;
+ dx3 /= wtot ;
+ dz3 /= wtot ;
+ dz4 /= wtot ;
+ dx3 += -3*dxx*x + 2*x*x*x;
+ dz4 += -4*dz3*z + 6*dzz*z*z -3*z*z*z*z;
+ dxx -= x * x ;
+ dzz -= z * z ;
+ dxz -= x * z ;
+ }
+ else
+ AliError(Form("Wrong weight %f\n", wtot));
+
+ // 5) Find an angle between cluster center vector and eigen vector e0
+
+ Float_t phi = 0;
+ if ( (x*x+z*z) > 0 )
+ phi = TMath::ACos ((x*e0.X() + z*e0.Y()) / sqrt(x*x + z*z));
+
+ fM2x = lambda0;
+ fM2z = lambda1;
+ fM3x = dx3;
+ fM4z = dz4;
+ fPhixe = phi;
+
+}
+//____________________________________________________________________________
+void AliPHOSEmcRecPoint::EvalAll(Float_t logWeight, TClonesArray * digits )
+{
+ EvalCoreEnergy(logWeight, digits);
+ EvalTime(digits) ;
+ AliPHOSRecPoint::EvalAll(digits) ;
+}
+//____________________________________________________________________________
+void AliPHOSEmcRecPoint::EvalAll(Float_t logWeight, TVector3 &vtx, TClonesArray * digits )
+{
+ // Evaluates all shower parameters
+ TVector3 vInc ;
+ EvalLocalPosition(logWeight, vtx, digits,vInc) ;
+ EvalElipsAxis(logWeight, digits, vInc) ; //they are evaluated with momenta
+ EvalMoments(logWeight, digits, vInc) ;
+ EvalDispersion(logWeight, digits, vInc) ;
+}
+//____________________________________________________________________________
+void AliPHOSEmcRecPoint::EvalLocalPosition(Float_t logWeight, TVector3 &vtx, TClonesArray * digits, TVector3 &vInc)
+{
+ // Calculates the center of gravity in the local PHOS-module coordinates
+ Float_t wtot = 0. ;
+
+ Int_t relid[4] ;
+
+ Float_t x = 0. ;
+ Float_t z = 0. ;
+
+ AliPHOSDigit * digit ;
+
+ AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance() ;
+
+ Int_t iDigit;
+
+ for(iDigit=0; iDigit<fMulDigit; iDigit++) {
+ digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
+
+ Float_t xi ;
+ Float_t zi ;
+ phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
+ phosgeom->RelPosInModule(relid, xi, zi);
+ if (fAmp>0 && fEnergyList[iDigit]>0) {
+ Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
+ x += xi * w ;
+ z += zi * w ;
+ wtot += w ;
+ }
+ else
+ AliError(Form("Wrong energy %f and/or amplitude %f\n", fEnergyList[iDigit], fAmp));
+ }
+ if (wtot>0) {
+ x /= wtot ;
+ z /= wtot ;
+ }
+ else
+ AliError(Form("Wrong weight %f\n", wtot));
+
+ // Correction for the depth of the shower starting point (TDR p 127)
+ Float_t para = 0.925 ;
+ Float_t parb = 6.52 ;
+
+ phosgeom->GetIncidentVector(vtx,GetPHOSMod(),x,z,vInc) ;
+
+ Float_t depthx = 0.;
+ Float_t depthz = 0.;
+ if (fAmp>0&&vInc.Y()!=0.) {
+ depthx = ( para * TMath::Log(fAmp) + parb ) * vInc.X()/TMath::Abs(vInc.Y()) ;
+ depthz = ( para * TMath::Log(fAmp) + parb ) * vInc.Z()/TMath::Abs(vInc.Y()) ;
}
+ else
+ AliError(Form("Wrong amplitude %f\n", fAmp));
+
+ fLocPos.SetX(x - depthx) ;
+ fLocPos.SetY(0.) ;
+ fLocPos.SetZ(z - depthz) ;
- Dxx /= wtot ;
- x /= wtot ;
- Dxx -= x * x ;
- Dzz /= wtot ;
- z /= wtot ;
- Dzz -= z * z ;
- Dxz /= wtot ;
- Dxz -= x * z ;
-
- lambda[0] = TMath::Sqrt( 0.5 * (Dxx + Dzz) + TMath::Sqrt( 0.25 * (Dxx - Dzz) * (Dxx - Dzz) + Dxz * Dxz ) ) ;
- lambda[1] = TMath::Sqrt( 0.5 * (Dxx + Dzz) - TMath::Sqrt( 0.25 * (Dxx - Dzz) * (Dxx - Dzz) + Dxz * Dxz ) ) ;
+ fLocPosM = 0 ;
}
//____________________________________________________________________________
-Float_t AliPHOSEmcRecPoint::GetMaximalEnergy(void)
+Float_t AliPHOSEmcRecPoint::GetMaximalEnergy(void) const
{
+ // Finds the maximum energy in the cluster
+
Float_t menergy = 0. ;
Int_t iDigit;
}
//____________________________________________________________________________
-Int_t AliPHOSEmcRecPoint::GetMultiplicityAtLevel(Float_t H)
+Int_t AliPHOSEmcRecPoint::GetMultiplicityAtLevel(Float_t H) const
{
+ // Calculates the multiplicity of digits with energy larger than H*energy
+
Int_t multipl = 0 ;
Int_t iDigit ;
for(iDigit=0; iDigit<fMulDigit; iDigit++) {
}
//____________________________________________________________________________
-Int_t AliPHOSEmcRecPoint::GetNumberOfLocalMax(int * maxAt, Float_t * maxAtEnergy)
+Int_t AliPHOSEmcRecPoint::GetNumberOfLocalMax( AliPHOSDigit ** maxAt, Float_t * maxAtEnergy,
+ Float_t locMaxCut,TClonesArray * digits) const
{
+ // Calculates the number of local maxima in the cluster using fLocalMaxCut as the minimum
+ // energy difference between two local maxima
+
AliPHOSDigit * digit ;
AliPHOSDigit * digitN ;
Int_t iDigitN ;
Int_t iDigit ;
- for(iDigit=0; iDigit<fMulDigit; iDigit++) {
- maxAt[iDigit] = fDigitsList[iDigit] ;
- }
+ for(iDigit = 0; iDigit < fMulDigit; iDigit++)
+ maxAt[iDigit] = (AliPHOSDigit*) digits->At(fDigitsList[iDigit]) ;
+
- for(iDigit=0 ; iDigit<fMulDigit; iDigit++) {
- if(maxAt[iDigit]!= -1) {
- digit = (AliPHOSDigit *) maxAt[iDigit];
-
- for(iDigitN=0; iDigitN<fMulDigit; iDigitN++) {
- digitN = (AliPHOSDigit *) fDigitsList[iDigitN];
+ for(iDigit = 0 ; iDigit < fMulDigit; iDigit++) {
+ if(maxAt[iDigit]) {
+ digit = maxAt[iDigit] ;
+
+ for(iDigitN = 0; iDigitN < fMulDigit; iDigitN++) {
+ if(iDigit == iDigitN)
+ continue ;
- if ( AreNeighbours(digit,digitN) ) {
+ digitN = (AliPHOSDigit *) digits->At(fDigitsList[iDigitN]) ;
+
+ if ( AreNeighbours(digit, digitN) ) {
if (fEnergyList[iDigit] > fEnergyList[iDigitN] ) {
- maxAt[iDigitN] = -1 ;
- //but may be digit is not local max too ?
- if(fEnergyList[iDigit]<fEnergyList[iDigitN]+fLocMaxCut)
- maxAt[iDigit] = -1 ;
+ maxAt[iDigitN] = 0 ;
+ // but may be digit too is not local max ?
+ if(fEnergyList[iDigit] < fEnergyList[iDigitN] + locMaxCut)
+ maxAt[iDigit] = 0 ;
}
else {
- maxAt[iDigit] = -1 ;
- //but may be digitN is not local max too ?
- if(fEnergyList[iDigit] >fEnergyList[iDigitN]-fLocMaxCut)
- maxAt[iDigitN] = -1 ;
+ maxAt[iDigit] = 0 ;
+ // but may be digitN too is not local max ?
+ if(fEnergyList[iDigit] > fEnergyList[iDigitN] - locMaxCut)
+ maxAt[iDigitN] = 0 ;
}
} // if Areneighbours
} // while digitN
} // while digit
iDigitN = 0 ;
- for(iDigit=0; iDigit<fMulDigit; iDigit++) {
- if(maxAt[iDigit] != -1){
+ for(iDigit = 0; iDigit < fMulDigit; iDigit++) {
+ if(maxAt[iDigit]){
maxAt[iDigitN] = maxAt[iDigit] ;
- maxAtEnergy[iDigitN++] = fEnergyList[iDigit] ;
+ maxAtEnergy[iDigitN] = fEnergyList[iDigit] ;
+ iDigitN++ ;
}
}
return iDigitN ;
}
-
//____________________________________________________________________________
-void AliPHOSEmcRecPoint::GetLocalPosition(TVector3 &LPos)
+void AliPHOSEmcRecPoint::EvalTime(TClonesArray * digits)
{
- if( fLocPos.X() < 1000000.) { //allready evaluated
- LPos = fLocPos ;
- return ;
+ // Define a rec.point time as a time in the cell with the maximum energy
+
+ Float_t maxE = 0;
+ Int_t maxAt = 0;
+ for(Int_t idig=0; idig < fMulDigit; idig++){
+ if(fEnergyList[idig] > maxE){
+ maxE = fEnergyList[idig] ;
+ maxAt = idig;
+ }
}
-
- Float_t wtot = 0. ;
-
- Int_t relid[4] ;
-
- Float_t x = 0. ;
- Float_t z = 0. ;
+ fTime = ((AliPHOSDigit*) digits->At(fDigitsList[maxAt]))->GetTime() ;
- AliPHOSDigit * digit ;
-
- AliPHOSGeometry * PHOSGeom = (AliPHOSGeometry *) fGeom ;
-
- Int_t iDigit;
-
-
- for(iDigit=0; iDigit<fMulDigit; iDigit++) {
- digit = (AliPHOSDigit *) fDigitsList[iDigit];
-
- Float_t xi ;
- Float_t zi ;
- PHOSGeom->AbsToRelNumbering(digit->GetId(), relid) ;
- PHOSGeom->RelPosInModule(relid, xi, zi);
- Float_t w = TMath::Max( 0., fW0 + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
- x += xi * w ;
- z += zi * w ;
- wtot += w ;
-
+}
+//____________________________________________________________________________
+void AliPHOSEmcRecPoint::Purify(Float_t threshold){
+ //Removes digits below threshold
+
+ Int_t * tempo = new Int_t[fMaxDigit];
+ Float_t * tempoE = new Float_t[fMaxDigit];
+
+ Int_t mult = 0 ;
+ for(Int_t iDigit=0;iDigit< fMulDigit ;iDigit++){
+ if(fEnergyList[iDigit] > threshold){
+ tempo[mult] = fDigitsList[iDigit] ;
+ tempoE[mult] = fEnergyList[iDigit] ;
+ mult++ ;
+ }
}
+
+ fMulDigit = mult ;
+ delete [] fDigitsList ;
+ delete [] fEnergyList ;
+ fDigitsList = new Int_t[fMulDigit];
+ fEnergyList = new Float_t[fMulDigit];
+
+ fAmp = 0.; //Recalculate total energy
+ for(Int_t iDigit=0;iDigit< fMulDigit ;iDigit++){
+ fDigitsList[iDigit] = tempo[iDigit];
+ fEnergyList[iDigit] = tempoE[iDigit] ;
+ fAmp+=tempoE[iDigit];
+ }
+
+ delete [] tempo ;
+ delete [] tempoE ;
- x /= wtot ;
- z /= wtot ;
- fLocPos.SetX(x) ;
- fLocPos.SetY(0.) ;
- fLocPos.SetZ(z) ;
-
- LPos = fLocPos ;
}
-
-// //____________________________________________________________________________
-// AliPHOSEmcRecPoint& AliPHOSEmcRecPoint::operator = (AliPHOSEmcRecPoint Clu)
-// {
-// int * DL = Clu.GetDigitsList() ;
-
-// if(fDigitsList)
-// delete fDigitsList ;
-
-// AliPHOSDigit * digit ;
-
-// Int_t iDigit;
-
-// for(iDigit=0; iDigit<fMulDigit; iDigit++) {
-// digit = (AliPHOSDigit *) DL[iDigit];
-// AddDigit(*digit) ;
-// }
-
-// fAmp = Clu.GetTotalEnergy() ;
-// fGeom = Clu.GetGeom() ;
-// TVector3 LocPos;
-// Clu.GetLocalPosition(LocPos) ;
-// fLocPos = LocPos;
-// fMulDigit = Clu.GetMultiplicity() ;
-// fMaxDigit = Clu.GetMaximumMultiplicity() ;
-// fPHOSMod = Clu.GetPHOSMod() ;
-// fW0 = Clu.GetLogWeightCut() ;
-// fDelta = Clu.GetDelta() ;
-// fLocMaxCut = Clu.GetLocMaxCut() ;
-
-// delete DL ;
-
-// return *this ;
-// }
-
//____________________________________________________________________________
-void AliPHOSEmcRecPoint::Print(Option_t * option)
+void AliPHOSEmcRecPoint::Print(Option_t *) const
{
- cout << "AliPHOSEmcRecPoint: " << endl ;
+ // Print the list of digits belonging to the cluster
+
+ TString message ;
+ message = "AliPHOSEmcRecPoint:\n" ;
+ message += "Digit multiplicity = %d" ;
+ message += ", cluster Energy = %f" ;
+ message += ", number of primaries = %d" ;
+ message += ", rec.point index = %d \n" ;
+ printf(message.Data(), fMulDigit, fAmp, fMulTrack,GetIndexInList() ) ;
- AliPHOSDigit * digit ;
Int_t iDigit;
-
- for(iDigit=0; iDigit<fMulDigit; iDigit++) {
- digit = (AliPHOSDigit *) fDigitsList[iDigit];
- cout << " digit Id = " << digit->GetId()
- << " digit Energy = " << fEnergyList[iDigit] << endl ;
- }
- cout << " Multiplicity = " << fMulDigit << endl ;
- cout << " Cluster Energy = " << fAmp << endl ;
+ printf(" digits ids = ") ;
+ for(iDigit=0; iDigit<fMulDigit; iDigit++)
+ printf(" %d ", fDigitsList[iDigit] ) ;
-}
-
-//______________________________________________________________________________
-void AliPHOSEmcRecPoint::Streamer(TBuffer &R__b)
-{
- // Stream an object of class AliPHOSEmcRecPoint.
-
- if (R__b.IsReading()) {
- Version_t R__v = R__b.ReadVersion(); if (R__v) { }
- AliPHOSRecPoint::Streamer(R__b);
- R__b >> fDelta;
- R__b >> fLocMaxCut;
- R__b.ReadArray(fEnergyList);
- R__b >> fW0;
- } else {
- R__b.WriteVersion(AliPHOSEmcRecPoint::IsA());
- AliPHOSRecPoint::Streamer(R__b);
- R__b << fDelta;
- R__b << fLocMaxCut;
- R__b.WriteArray(fEnergyList, GetMaximumDigitMultiplicity() );
- R__b << fW0;
- }
-}
+ printf("\n digit energies = ") ;
+ for(iDigit=0; iDigit<fMulDigit; iDigit++)
+ printf(" %f ", fEnergyList[iDigit] ) ;
+ printf("\n digit primaries ") ;
+ if (fMulTrack<1) printf("... no primaries");
+ for(iDigit = 0;iDigit < fMulTrack; iDigit++)
+ printf(" %d ", fTracksList[iDigit]) ;
+ printf("\n") ;
+}
+
+