#include "TH2.h"
#include "TMath.h"
#include "TCanvas.h"
+#include "TGraph.h"
// --- Standard library ---
-#include <iostream.h>
-
// --- AliRoot header files ---
#include "AliGenerator.h"
fAmp = 0. ;
fCoreEnergy = 0 ;
fEnergyList = 0 ;
+ fNExMax = 0 ; //Not unfolded yet
fTime = -1. ;
fLocPos.SetX(1000000.) ; //Local position should be evaluated
+ fDebug=0;
}
fMulDigit = 0 ;
fAmp = 0. ;
+ fNExMax = 0 ; //Not unfolded yet
fCoreEnergy = 0 ;
fEnergyList = 0 ;
fTime = -1. ;
fLocPos.SetX(1000000.) ; //Local position should be evaluated
+ fDebug=0;
}
+//____________________________________________________________________________
+AliPHOSEmcRecPoint::AliPHOSEmcRecPoint(const AliPHOSEmcRecPoint & rp) : AliPHOSRecPoint(rp)
+{
+ // cpy ctor
+
+ fMulDigit = rp.fMulDigit ;
+ fAmp = rp.fAmp ;
+ fCoreEnergy = rp.fCoreEnergy ;
+ fEnergyList = new Float_t[rp.fMulDigit] ;
+ Int_t index ;
+ for(index = 0 ; index < fMulDigit ; index++)
+ fEnergyList[index] = rp.fEnergyList[index] ;
+ fNExMax = rp.fNExMax ;
+ fTime = rp.fTime ;
+}
+
//____________________________________________________________________________
AliPHOSEmcRecPoint::~AliPHOSEmcRecPoint()
{
fLambda[1]= 0. ;
}
+//____________________________________________________________________________
+void AliPHOSEmcRecPoint::EvalMoments(Float_t logWeight,TClonesArray * digits)
+{
+ // 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 ;
+
+ AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
+ AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
+
+ 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);
+ 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 ;
+ }
+ 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 ) ;
+
+ // 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;
+ 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 ;
+ }
+ 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 ;
+
+ // 5) Find an angle between cluster center vector and eigen vector e0
+
+ Float_t 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 )
{
// Evaluates all shower parameters
- AliPHOSRecPoint::EvalAll(logWeight,digits) ;
EvalLocalPosition(logWeight, digits) ;
EvalElipsAxis(logWeight, digits) ;
+ EvalMoments(logWeight, digits) ;
EvalDispersion(logWeight, digits) ;
EvalCoreEnergy(logWeight, digits);
EvalTime(digits) ;
+ AliPHOSRecPoint::EvalAll(logWeight,digits) ;
}
//____________________________________________________________________________
void AliPHOSEmcRecPoint::EvalLocalPosition(Float_t logWeight, TClonesArray * digits)
xoL = xo*TMath::Cos(phi)-yo*TMath::Sin(phi) ;
yoL = xo*TMath::Sin(phi)+yo*TMath::Cos(phi) ;
- Float_t radius = TMath::Sqrt((xoL-x)*(xoL-x)+
- (phosgeom->GetIPtoCrystalSurface()-yoL)*(phosgeom->GetIPtoCrystalSurface()-yoL)+
- (zo-z)*(zo-z));
+ Float_t radius = phosgeom->GetIPtoCrystalSurface()-yoL;
Float_t incidencephi = TMath::ATan((x-xoL ) / radius) ;
Float_t incidencetheta = TMath::ATan((z-zo) / radius) ;
Float_t depthx = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencephi) ;
Float_t depthz = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencetheta) ;
-
fLocPos.SetX(x - depthx) ;
fLocPos.SetY(0.) ;
}
//____________________________________________________________________________
-Int_t AliPHOSEmcRecPoint::GetNumberOfLocalMax(Int_t * 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
Int_t iDigit ;
for(iDigit = 0; iDigit < fMulDigit; iDigit++)
- maxAt[iDigit] = (Int_t) digits->At(fDigitsList[iDigit]) ;
+ maxAt[iDigit] = (AliPHOSDigit*) digits->At(fDigitsList[iDigit]) ;
for(iDigit = 0 ; iDigit < fMulDigit; iDigit++) {
- if(maxAt[iDigit] != -1) {
- digit = (AliPHOSDigit *) maxAt[iDigit] ;
+ if(maxAt[iDigit]) {
+ digit = maxAt[iDigit] ;
for(iDigitN = 0; iDigitN < fMulDigit; iDigitN++) {
digitN = (AliPHOSDigit *) digits->At(fDigitsList[iDigitN]) ;
if ( AreNeighbours(digit, digitN) ) {
if (fEnergyList[iDigit] > fEnergyList[iDigitN] ) {
- maxAt[iDigitN] = -1 ;
+ maxAt[iDigitN] = 0 ;
// but may be digit too is not local max ?
if(fEnergyList[iDigit] < fEnergyList[iDigitN] + locMaxCut)
- maxAt[iDigit] = -1 ;
+ maxAt[iDigit] = 0 ;
}
else {
- maxAt[iDigit] = -1 ;
+ maxAt[iDigit] = 0 ;
// but may be digitN too is not local max ?
if(fEnergyList[iDigit] > fEnergyList[iDigitN] - locMaxCut)
- maxAt[iDigitN] = -1 ;
+ maxAt[iDigitN] = 0 ;
}
} // if Areneighbours
} // while digitN
iDigitN = 0 ;
for(iDigit = 0; iDigit < fMulDigit; iDigit++) {
- if(maxAt[iDigit] != -1){
+ if(maxAt[iDigit]){
maxAt[iDigitN] = maxAt[iDigit] ;
maxAtEnergy[iDigitN] = fEnergyList[iDigit] ;
iDigitN++ ;
return iDigitN ;
}
//____________________________________________________________________________
-void AliPHOSEmcRecPoint::EvalTime(TClonesArray * digits){
-
+void AliPHOSEmcRecPoint::EvalTime(TClonesArray * digits)
+{
+ // 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++){
}
//____________________________________________________________________________
-void AliPHOSEmcRecPoint::Print(Option_t * option)
+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]) ;
+
+ for(Int_t iDigit=0;iDigit< fMulDigit ;iDigit++){
+ fDigitsList[iDigit] = tempo[iDigit];
+ fEnergyList[iDigit] = tempoE[iDigit] ;
+ }
+
+ delete [] tempo ;
+ delete [] tempoE ;
+
+}
+//____________________________________________________________________________
+void AliPHOSEmcRecPoint::Print(Option_t * option) const
{
// Print the list of digits belonging to the cluster
- cout << "AliPHOSEmcRecPoint: " << endl ;
+ TString message ;
+ message = "AliPHOSEmcRecPoint:\n" ;
+ message += " digits # = " ;
+ Info("Print", message.Data()) ;
Int_t iDigit;
- cout << " digits # = " ;
for(iDigit=0; iDigit<fMulDigit; iDigit++)
- cout << fDigitsList[iDigit] << " " ;
- cout << endl ;
+ printf(" %d ", fDigitsList[iDigit] ) ;
- cout << " Energies = " ;
+ Info("Print", " Energies = ") ;
for(iDigit=0; iDigit<fMulDigit; iDigit++)
- cout << fEnergyList[iDigit] << " ";
- cout << endl ;
-
- cout << " Primaries " ;
+ printf(" %f ", fEnergyList[iDigit] ) ;
+ printf("\n") ;
+ Info("Print", " Primaries ") ;
for(iDigit = 0;iDigit < fMulTrack; iDigit++)
- cout << fTracksList[iDigit] << " " << endl ;
-
- cout << " Multiplicity = " << fMulDigit << endl ;
- cout << " Cluster Energy = " << fAmp << endl ;
- cout << " Number of primaries " << fMulTrack << endl ;
- cout << " Stored at position " << GetIndexInList() << endl ;
+ printf(" %d ", fTracksList[iDigit]) ;
+ printf("\n") ;
+ message = " Multiplicity = %d" ;
+ message += " Cluster Energy = %f" ;
+ message += " Number of primaries %d" ;
+ message += " Stored at position %d" ;
+ Info("Print", message.Data(), fMulDigit, fAmp, fMulTrack,GetIndexInList() ) ;
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff