/* $Id$ */
//_________________________________________________________________________
-// 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.
// 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 "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"
ClassImp(AliEMCALv1)
//______________________________________________________________________
AliEMCALv1::AliEMCALv1():AliEMCALv0(){
// ctor
- fLightYieldMean = 0 ;
- fIntrinsicAPDEfficiency = fLightFactor = fLightYieldAttenuation = fAPDFactor = fAPDGain = fRecalibrationFactor = fAPDFactor = 0. ;
+
}
//______________________________________________________________________
// Standard Creator.
fHits= new TClonesArray("AliEMCALHit",1000);
- gAlice->AddHitList(fHits);
+ gAlice->GetMCApp()->AddHitList(fHits);
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 ;
-
}
//______________________________________________________________________
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
+ // An EMCAL hit is the sum of all hits in a tower section
+ // originating from the same entering particle
Int_t hitCounter;
AliEMCALHit *newHit;
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++;
}
//______________________________________________________________________
void AliEMCALv1::StepManager(void){
- // Accumulates hits as long as the track stays in a single
- // crystal or PPSD gas Cell
+ // Accumulates hits as long as the track stays in a tower
- Int_t id[2]; // (layer, phi, Eta) indices
- Int_t absid;
+ Int_t id[2]; // (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 tracknumber = gAlice->GetMCApp()->GetCurrentTrackNumber();
Int_t primary = 0;
static Int_t iparent = 0;
static Float_t ienergy = 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 = gAlice->GetMCApp()->Particle(parent) ;
part->SetBit(kKeepBit);
parent = part->GetFirstMother() ;
}
Float_t depositedEnergy ;
if( (depositedEnergy = gMC->Edep()) > 0.){// Track is inside a scintillator and deposits some energy
-
+
+ // use sampling fraction to get original energy --HG
+ depositedEnergy = depositedEnergy * geom->GetSampling();
+
gMC->TrackPosition(pos);
xyzte[0] = pos[0];
xyzte[1] = pos[1];
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 ;
+ 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 ;
+ xyzte[4] = lightYield ;
- primary = gAlice->GetPrimary(tracknumber);
- AddHit(fIshunt, primary,tracknumber, iparent, ienergy, absid, xyzte, pmom);
+ primary = gAlice->GetMCApp()->GetPrimary(tracknumber);
+
+ 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, primary,tracknumber, iparent, ienergy, absid, xyzte, pmom);
} // there is deposited energy
}
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff