/**************************************************************************
-
* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
-
* *
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* Author: The ALICE Off-line Project. *
-
* Contributors are mentioned in the code where appropriate. *
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* *
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* Permission to use, copy, modify and distribute this software and its *
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* documentation strictly for non-commercial purposes is hereby granted *
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* without fee, provided that the above copyright notice appears in all *
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* copies and that both the copyright notice and this permission notice *
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* appear in the supporting documentation. The authors make no claims *
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* about the suitability of this software for any purpose. It is *
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* provided "as is" without express or implied warranty. *
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**************************************************************************/
-
-
/* $Id$ */
-
-
//_________________________________________________________________________
-
-// Implementation version v1 of EMCAL Manager class
-
-// An object of this class does not produce digits
-
-// It is the one to use if you do want to produce outputs in TREEH
-
-//
-
+//*-- Implementation version v1 of EMCAL Manager class
+//*-- An object of this class does not produce digits
+//*-- It is the one to use if you do want to produce outputs in TREEH
+//*--
//*-- Author: Sahal Yacoob (LBL /UCT)
-
//*-- : Jennifer Klay (LBL)
-
-
-
// This Class not stores information on all particles prior to EMCAL entry - in order to facilitate analysis.
-
// This is done by setting fIShunt =2, and flagging all parents of particles entering the EMCAL.
-
-
// 15/02/2002 .... Yves Schutz
-
// 1. fSamplingFraction and fLayerToPreshowerRatio have been removed
-
// 2. Timing signal is collected and added to hit
-
-
// --- ROOT system ---
-
-#include "TPGON.h"
-
-#include "TTUBS.h"
-
-#include "TNode.h"
-
-#include "TRandom.h"
-
-#include "TTree.h"
-
-#include "TGeometry.h"
-
-#include "TParticle.h"
-
-
+#include <TClonesArray.h>
+#include <TParticle.h>
+#include <TVirtualMC.h>
// --- Standard library ---
-
-
-#include <stdio.h>
-
-#include <string.h>
-
-#include <stdlib.h>
-
-#include <Rstrstream.h>
-
-#include <Riostream.h>
-
-#include <math.h>
-
// --- AliRoot header files ---
-
-
-
#include "AliEMCALv1.h"
-
#include "AliEMCALHit.h"
-
#include "AliEMCALGeometry.h"
-
-#include "AliConst.h"
-
#include "AliRun.h"
-
#include "AliMC.h"
-
-
+#include "AliStack.h"
ClassImp(AliEMCALv1)
-
-
-
//______________________________________________________________________
-
-AliEMCALv1::AliEMCALv1():AliEMCALv0(){
-
- // ctor
-
- fLightYieldMean = 0 ;
-
- fIntrinsicAPDEfficiency = fLightFactor = fLightYieldAttenuation = fAPDFactor = fAPDGain = fRecalibrationFactor = fAPDFactor = 0. ;
-
+AliEMCALv1::AliEMCALv1()
+ : AliEMCALv0(),
+ fCurPrimary(-1),
+ fCurParent(-1),
+ fCurTrack(-1),
+ fTimeCut(30e-09)
+{
+ // default ctor
}
-
-
//______________________________________________________________________
-
-AliEMCALv1::AliEMCALv1(const char *name, const char *title):
-
- AliEMCALv0(name,title){
-
+AliEMCALv1::AliEMCALv1(const char *name, const char *title)
+ : AliEMCALv0(name,title),
+ fCurPrimary(-1),
+ fCurParent(-1),
+ fCurTrack(-1),
+ fTimeCut(30e-09)
+{
// Standard Creator.
-
-
fHits= new TClonesArray("AliEMCALHit",1000);
-
- gAlice->AddHitList(fHits);
-
-
+ // gAlice->GetMCApp()->AddHitList(fHits); // 20-dec-04 - advice of Andreas
fNhits = 0;
-
fIshunt = 2; // All hits are associated with particles entering the calorimeter
-
-
-
- //Photoelectron statistics:
-
- // The light yield is a poissonian distribution of the number of
-
- // photons created in a plastic layer, calculated using following formula
-
- // NumberOfPhotons = EnergyLost * LightYieldMean* APDEfficiency *
-
- // exp (-LightYieldAttenuation * DistanceToPINdiodeFromTheHit)
-
- // LightYieldMean is parameter calculated to be over 100000 photons per GeV (a guess)
-
- // APDEfficiency is 0.02655
-
- // fLightYieldAttenuation is 0.0045 a guess
-
- // TO BE FIXED
-
- //***** Need a method in geometry to retrieve the fiber length corresponding to each layer
-
- //***** See the step manager for the light attenuation calculation
-
- // The number of electrons created in the APD is
-
- // NumberOfElectrons = APDGain * LightYield
-
- // The APD Gain is 300
-
-
-
- fLightYieldMean = 10000000.; // This is a guess
-
- fIntrinsicAPDEfficiency = 0.02655 ;
-
- fLightFactor = fLightYieldMean * fIntrinsicAPDEfficiency ;
-
- fLightYieldAttenuation = 0.0045 ; // an other guess
-
- fAPDGain = 300. ;
-
- fRecalibrationFactor = 13.418/ fLightYieldMean ;
-
- fAPDFactor = (fRecalibrationFactor/100.) * fAPDGain ;
-
-
-
}
-
-
//______________________________________________________________________
-
AliEMCALv1::~AliEMCALv1(){
-
- // dtor
-
-
-
- if ( fHits) {
-
- fHits->Delete();
-
- delete fHits;
-
- fHits = 0;
-
- }
-
+ // dtor
+
+ if ( fHits ) {
+ fHits->Clear();
+ delete fHits;
+ fHits = 0;
+ }
}
//______________________________________________________________________
-
void AliEMCALv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t iparent, Float_t ienergy,
-
Int_t id, Float_t * hits,Float_t * p){
-
// Add a hit to the hit list.
-
- // An EMCAL hit is the sum of all hits in a single segment
-
- // originating from the same enterring particle
-
- Int_t hitCounter;
-
+ // An EMCAL hit is the sum of all hits in a tower section
+ // originating from the same entering particle
+ Int_t hitCounter=0;
-
- AliEMCALHit *newHit;
-
- AliEMCALHit *curHit;
-
+ AliEMCALHit *newHit=0;
+ AliEMCALHit *curHit=0;
Bool_t deja = kFALSE;
-
-
newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p);
-
- for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) {
-
+ for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) {
curHit = (AliEMCALHit*) (*fHits)[hitCounter];
-
// We add hits with the same tracknumber, while GEANT treats
-
// primaries succesively
-
- if(curHit->GetPrimary() != primary) break;
-
+ if(curHit->GetPrimary() != primary)
+ break;
if( *curHit == *newHit ) {
-
*curHit = *curHit + *newHit;
-
deja = kTRUE;
-
- } // end if
-
+ } // end if
} // end for hitCounter
-
-
-
+
if ( !deja ) {
-
new((*fHits)[fNhits]) AliEMCALHit(*newHit);
-
fNhits++;
-
} // end if
-
-
-
+
delete newHit;
-
}
-
//______________________________________________________________________
-
void AliEMCALv1::StepManager(void){
+ // Accumulates hits as long as the track stays in a tower
- // Accumulates hits as long as the track stays in a single
-
- // crystal or PPSD gas Cell
-
-
-
- Int_t id[2]; // (layer, phi, Eta) indices
-
- Int_t absid;
-
+ Int_t id[2]={0,0}; // (phi, Eta) indices
// position wrt MRS and energy deposited
-
Float_t xyzte[5]={0.,0.,0.,0.,0.};// position wrt MRS, time and energy deposited
-
Float_t pmom[4]={0.,0.,0.,0.};
-
TLorentzVector pos; // Lorentz vector of the track current position.
-
TLorentzVector mom; // Lorentz vector of the track current momentum.
-
- Int_t tracknumber = gAlice->CurrentTrack();
-
- Int_t primary = 0;
-
- static Int_t iparent = 0;
-
+ Int_t tracknumber = gAlice->GetMCApp()->GetCurrentTrackNumber();
static Float_t ienergy = 0;
-
Int_t copy = 0;
-
-
AliEMCALGeometry * geom = GetGeometry() ;
+ TParticle *part=0;
+ Int_t parent=-1;
-
- if(gMC->IsTrackEntering() && (strcmp(gMC->CurrentVolName(),"XALU") == 0)){ // This Particle in enterring the Calorimeter
-
- gMC->TrackPosition(pos) ;
-
- xyzte[0] = pos[0] ;
-
- xyzte[1] = pos[1] ;
-
- xyzte[2] = pos[2] ;
-
- if ( (xyzte[0]*xyzte[0] + xyzte[1]*xyzte[1])
-
- < (geom->GetEnvelop(0)+geom->GetGap2Active()+1.5 )*(geom->GetEnvelop(0)+geom->GetGap2Active()+1.5 ) ) {
-
- iparent = tracknumber;
-
- gMC->TrackMomentum(mom);
-
- ienergy = mom[3];
-
- TParticle * part = 0 ;
-
- Int_t parent = iparent ;
-
- while ( parent != -1 ) { // <------------- flags this particle to be kept and
-
- //all the ancestors of this particle
-
- part = gAlice->Particle(parent) ;
-
- part->SetBit(kKeepBit);
-
- parent = part->GetFirstMother() ;
-
- }
-
- }
-
- }
-
- if(gMC->CurrentVolID(copy) == gMC->VolId("XPHI") ) { // We are in a Scintillator Layer
-
-
-
+ static Int_t idXPHI = gMC->VolId("XPHI");
+ if(gMC->CurrentVolID(copy) == idXPHI ) { // We are in a Scintillator Layer
Float_t depositedEnergy ;
-
-
- if( (depositedEnergy = gMC->Edep()) > 0.){// Track is inside a scintillator and deposits some energy
-
-
-
+ if( ((depositedEnergy = gMC->Edep()) > 0.) && (gMC->TrackTime() < fTimeCut)){// Track is inside a scintillator and deposits some energy
+ if (fCurPrimary==-1)
+ fCurPrimary=gAlice->GetMCApp()->GetPrimary(tracknumber);
+
+ if (fCurParent==-1 || tracknumber != fCurTrack) {
+ // Check parentage
+ //Int_t parent=tracknumber;
+ parent=tracknumber;
+ if (fCurParent != -1) {
+ while (parent != fCurParent && parent != -1) {
+ //TParticle *part=gAlice->GetMCApp()->Particle(parent);
+ part=gAlice->GetMCApp()->Particle(parent);
+ parent=part->GetFirstMother();
+ }
+ }
+ if (fCurParent==-1 || parent==-1) {
+ //Int_t parent=tracknumber;
+ //TParticle *part=gAlice->GetMCApp()->Particle(parent);
+ parent=tracknumber;
+ part=gAlice->GetMCApp()->Particle(parent);
+ while (parent != -1 && geom->IsInEMCAL(part->Vx(),part->Vy(),part->Vz())) {
+ parent=part->GetFirstMother();
+ if (parent!=-1)
+ part=gAlice->GetMCApp()->Particle(parent);
+ }
+ fCurParent=parent;
+ if (fCurParent==-1)
+ Error("StepManager","Cannot find parent");
+ else {
+ //TParticle *part=gAlice->GetMCApp()->Particle(fCurParent);
+ part=gAlice->GetMCApp()->Particle(fCurParent);
+ ienergy = part->Energy();
+ }
+ while (parent != -1) {
+ part=gAlice->GetMCApp()->Particle(parent);
+ part->SetBit(kKeepBit);
+ parent=part->GetFirstMother();
+ }
+ }
+ fCurTrack=tracknumber;
+ }
gMC->TrackPosition(pos);
-
xyzte[0] = pos[0];
-
xyzte[1] = pos[1];
-
xyzte[2] = pos[2];
-
xyzte[3] = gMC->TrackTime() ;
-
-
gMC->TrackMomentum(mom);
-
pmom[0] = mom[0];
-
pmom[1] = mom[1];
-
pmom[2] = mom[2];
-
pmom[3] = mom[3];
-
-
gMC->CurrentVolOffID(1, id[0]); // get the POLY copy number;
-
gMC->CurrentVolID(id[1]); // get the phi number inside the layer
-
- absid = (id[0]-1)*(geom->GetNPhi()) + id[1];
-
-
- //Calculates the light yield, the number of photons produced in the
-
- //plastic layer
-
- // Here we need to know the fiber lebgth to calculate the attenuation
-
-
-
- Float_t lengthOfFiber = 0. ;// should be retrieved from the geometry
-
-
-
- Float_t lightYield = gRandom->Poisson(fLightFactor * depositedEnergy *
-
- exp(-fLightYieldAttenuation * lengthOfFiber)) ;
-
- xyzte[4] = fAPDFactor * lightYield ;
-
-
-
- primary = gAlice->GetPrimary(tracknumber);
-
- AddHit(fIshunt, primary,tracknumber, iparent, ienergy, absid, xyzte, pmom);
-
+ Int_t tower = (id[0]-1) % geom->GetNZ() + 1 + (id[1] - 1) * geom->GetNZ() ;
+ Int_t layer = static_cast<Int_t>((id[0]-1)/(geom->GetNZ())) + 1 ;
+ Int_t absid = tower;
+ Int_t nlayers = geom->GetNECLayers();
+ if ((layer > nlayers)||(layer<1))
+ Fatal("StepManager", "Wrong calculation of layer number: layer = %d > %d\n", layer, nlayers) ;
+
+ Float_t lightYield = depositedEnergy ;
+ // Apply Birk's law (copied from G3BIRK)
+
+ if (gMC->TrackCharge()!=0) { // Check
+ Float_t birkC1Mod = 0;
+ if (fBirkC0==1){ // Apply correction for higher charge states
+ if (TMath::Abs(gMC->TrackCharge())>=2)
+ birkC1Mod=fBirkC1*7.2/12.6;
+ else
+ birkC1Mod=fBirkC1;
+ }
+ Float_t dedxcm=0.;
+ if (gMC->TrackStep()>0)
+ dedxcm=1000.*gMC->Edep()/gMC->TrackStep();
+ else
+ dedxcm=0;
+ lightYield=lightYield/(1.+birkC1Mod*dedxcm+fBirkC2*dedxcm*dedxcm);
+ }
+
+ // use sampling fraction to get original energy --HG
+ xyzte[4] = lightYield * geom->GetSampling();
+
+ if (gDebug == 2)
+ printf("StepManager: id0 = %d, id1 = %d, absid = %d tower = %d layer = %d energy = %f\n", id[0], id[1], absid, tower, layer, xyzte[4]) ;
+
+ AddHit(fIshunt, fCurPrimary,tracknumber, fCurParent, ienergy, absid, xyzte, pmom);
} // there is deposited energy
-
}
+}
+//___________________________________________________________
+void AliEMCALv1::RemapTrackHitIDs(Int_t *map) {
+ // remap track index numbers for primary and parent indices
+ // (Called by AliStack::PurifyKine)
+ if (Hits()==0)
+ return;
+ TIter hitIter(Hits());
+ Int_t iHit=0;
+ while (AliEMCALHit *hit=dynamic_cast<AliEMCALHit*>(hitIter()) ) {
+ if (map[hit->GetIparent()]==-99)
+ cout << "Remapping, found -99 for parent id " << hit->GetIparent() << ", " << map[hit->GetIparent()] << ", iHit " << iHit << endl;
+ hit->SetIparent(map[hit->GetIparent()]);
+ if (map[hit->GetPrimary()]==-99)
+ cout << "Remapping, found -99 for primary id " << hit->GetPrimary() << ", " << map[hit->GetPrimary()] << ", iHit " << iHit << endl;
+ hit->SetPrimary(map[hit->GetPrimary()]);
+ iHit++;
+ }
}
+//___________________________________________________________
+void AliEMCALv1::FinishPrimary() {
+ // finish primary
+ fCurPrimary=-1;
+ fCurParent=-1;
+ fCurTrack=-1;
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff