/**************************************************************************
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* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
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* *
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* Author: The ALICE Off-line Project. *
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* 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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**************************************************************************/
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/* $Id$ */
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//_________________________________________________________________________
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// Implementation version v1 of EMCAL Manager class
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// An object of this class does not produce digits
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// It is the one to use if you do want to produce outputs in TREEH
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//
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//*-- Author: Sahal Yacoob (LBL /UCT)
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//*-- : Jennifer Klay (LBL)
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// This Class not stores information on all particles prior to EMCAL entry - in order to facilitate analysis.
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// This is done by setting fIShunt =2, and flagging all parents of particles entering the EMCAL.
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// 15/02/2002 .... Yves Schutz
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// 1. fSamplingFraction and fLayerToPreshowerRatio have been removed
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// 2. Timing signal is collected and added to hit
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// --- ROOT system ---
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-#include "TPGON.h"
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-#include "TTUBS.h"
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-#include "TNode.h"
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-#include "TRandom.h"
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-#include "TTree.h"
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-#include "TGeometry.h"
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#include "TParticle.h"
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+#include "TVirtualMC.h"
// --- Standard library ---
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-#include <stdio.h>
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-#include <string.h>
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-#include <stdlib.h>
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-#include <strstream.h>
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-#include <iostream.h>
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-#include <math.h>
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// --- AliRoot header files ---
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-
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#include "AliEMCALv1.h"
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#include "AliEMCALHit.h"
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#include "AliEMCALGeometry.h"
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-#include "AliConst.h"
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#include "AliRun.h"
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#include "AliMC.h"
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ClassImp(AliEMCALv1)
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//______________________________________________________________________
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AliEMCALv1::AliEMCALv1():AliEMCALv0(){
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// ctor
- fLightYieldMean = 0 ;
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- fIntrinsicAPDEfficiency = fLightFactor = fLightYieldAttenuation = fAPDFactor = fAPDGain = fRecalibrationFactor = fAPDFactor = 0. ;
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}
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//______________________________________________________________________
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AliEMCALv1::AliEMCALv1(const char *name, const char *title):
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AliEMCALv0(name,title){
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// Standard Creator.
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fHits= new TClonesArray("AliEMCALHit",1000);
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- gAlice->AddHitList(fHits);
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+ gAlice->GetMCApp()->AddHitList(fHits);
fNhits = 0;
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fIshunt = 2; // All hits are associated with particles entering the calorimeter
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-
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- //Photoelectron statistics:
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- // The light yield is a poissonian distribution of the number of
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- // photons created in a plastic layer, calculated using following formula
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- // NumberOfPhotons = EnergyLost * LightYieldMean* APDEfficiency *
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- // exp (-LightYieldAttenuation * DistanceToPINdiodeFromTheHit)
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- // LightYieldMean is parameter calculated to be over 100000 photons per GeV (a guess)
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- // APDEfficiency is 0.02655
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- // fLightYieldAttenuation is 0.0045 a guess
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- // TO BE FIXED
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- //***** Need a method in geometry to retrieve the fiber length corresponding to each layer
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- //***** See the step manager for the light attenuation calculation
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- // The number of electrons created in the APD is
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- // NumberOfElectrons = APDGain * LightYield
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- // The APD Gain is 300
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-
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- fLightYieldMean = 10000000.; // This is a guess
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- fIntrinsicAPDEfficiency = 0.02655 ;
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- fLightFactor = fLightYieldMean * fIntrinsicAPDEfficiency ;
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- fLightYieldAttenuation = 0.0045 ; // an other guess
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- fAPDGain = 300. ;
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- fRecalibrationFactor = 13.418/ fLightYieldMean ;
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- fAPDFactor = (fRecalibrationFactor/100.) * fAPDGain ;
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}
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//______________________________________________________________________
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AliEMCALv1::~AliEMCALv1(){
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// dtor
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if ( fHits) {
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fHits->Delete();
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delete fHits;
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fHits = 0;
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}
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}
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//______________________________________________________________________
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void AliEMCALv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t iparent, Float_t ienergy,
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Int_t id, Float_t * hits,Float_t * p){
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// Add a hit to the hit list.
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- // An EMCAL hit is the sum of all hits in a single segment
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- // originating from the same enterring particle
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+ // An EMCAL hit is the sum of all hits in a tower section (PRE, ECAL, HCAL)
+ // originating from the same entering particle
Int_t hitCounter;
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AliEMCALHit *newHit;
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AliEMCALHit *curHit;
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Bool_t deja = kFALSE;
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newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p);
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for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) {
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curHit = (AliEMCALHit*) (*fHits)[hitCounter];
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// We add hits with the same tracknumber, while GEANT treats
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// primaries succesively
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- if(curHit->GetPrimary() != primary) break;
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+ if(curHit->GetPrimary() != primary)
+ break;
if( *curHit == *newHit ) {
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*curHit = *curHit + *newHit;
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deja = kTRUE;
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} // end if
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} // end for hitCounter
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if ( !deja ) {
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new((*fHits)[fNhits]) AliEMCALHit(*newHit);
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fNhits++;
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} // end if
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delete newHit;
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}
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//______________________________________________________________________
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void AliEMCALv1::StepManager(void){
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// Accumulates hits as long as the track stays in a single
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// crystal or PPSD gas Cell
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Int_t id[2]; // (layer, phi, Eta) indices
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- Int_t absid;
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// position wrt MRS and energy deposited
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Float_t xyzte[5]={0.,0.,0.,0.,0.};// position wrt MRS, time and energy deposited
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Float_t pmom[4]={0.,0.,0.,0.};
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TLorentzVector pos; // Lorentz vector of the track current position.
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TLorentzVector mom; // Lorentz vector of the track current momentum.
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- Int_t tracknumber = gAlice->CurrentTrack();
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+ Int_t tracknumber = gAlice->GetMCApp()->GetCurrentTrackNumber();
Int_t primary = 0;
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static Int_t iparent = 0;
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static Float_t ienergy = 0;
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Int_t copy = 0;
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AliEMCALGeometry * geom = GetGeometry() ;
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if(gMC->IsTrackEntering() && (strcmp(gMC->CurrentVolName(),"XALU") == 0)){ // This Particle in enterring the Calorimeter
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gMC->TrackPosition(pos) ;
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xyzte[0] = pos[0] ;
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xyzte[1] = pos[1] ;
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xyzte[2] = pos[2] ;
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if ( (xyzte[0]*xyzte[0] + xyzte[1]*xyzte[1])
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< (geom->GetEnvelop(0)+geom->GetGap2Active()+1.5 )*(geom->GetEnvelop(0)+geom->GetGap2Active()+1.5 ) ) {
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iparent = tracknumber;
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gMC->TrackMomentum(mom);
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ienergy = mom[3];
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TParticle * part = 0 ;
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Int_t parent = iparent ;
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while ( parent != -1 ) { // <------------- flags this particle to be kept and
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//all the ancestors of this particle
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- part = gAlice->Particle(parent) ;
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+ part = gAlice->GetMCApp()->Particle(parent) ;
part->SetBit(kKeepBit);
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parent = part->GetFirstMother() ;
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}
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}
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}
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if(gMC->CurrentVolID(copy) == gMC->VolId("XPHI") ) { // We are in a Scintillator Layer
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Float_t depositedEnergy ;
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if( (depositedEnergy = gMC->Edep()) > 0.){// Track is inside a scintillator and deposits some energy
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-
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+
gMC->TrackPosition(pos);
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xyzte[0] = pos[0];
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xyzte[1] = pos[1];
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xyzte[2] = pos[2];
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xyzte[3] = gMC->TrackTime() ;
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gMC->TrackMomentum(mom);
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pmom[0] = mom[0];
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pmom[1] = mom[1];
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pmom[2] = mom[2];
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pmom[3] = mom[3];
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gMC->CurrentVolOffID(1, id[0]); // get the POLY copy number;
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gMC->CurrentVolID(id[1]); // get the phi number inside the layer
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- absid = (id[0]-1)*(geom->GetNPhi()) + id[1];
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- //Calculates the light yield, the number of photons produced in the
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- //plastic layer
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- // Here we need to know the fiber lebgth to calculate the attenuation
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-
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- Float_t lengthOfFiber = 0. ;// should be retrieved from the geometry
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- Float_t lightYield = gRandom->Poisson(fLightFactor * depositedEnergy *
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- exp(-fLightYieldAttenuation * lengthOfFiber)) ;
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- xyzte[4] = fAPDFactor * lightYield ;
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+ 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 ;
+ if (layer <= geom->GetNPRLayers() )
+ absid += geom->GetNZ() * geom->GetNPhi() ;
+ else if (layer > geom->GetNECLayers() )
+ absid += 2 * geom->GetNZ() * geom->GetNPhi() ;
+ else {
+ Int_t nlayers = geom->GetNPRLayers()+ geom->GetNECLayers()+ geom->GetNHCLayers() ;
+ if (layer > nlayers)
+ Fatal("StepManager", "Wrong calculation of layer number: layer = %d > %d\n", layer, nlayers) ;
+ }
+
+ Float_t lightYield = depositedEnergy ;
+ ;
+ xyzte[4] = lightYield ;
+ primary = gAlice->GetMCApp()->GetPrimary(tracknumber);
- primary = gAlice->GetPrimary(tracknumber);
+ if (gDebug == 2)
+ Info("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);
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} // there is deposited energy
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}
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}
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git://git.uio.no / u / mrichter / AliRoot.git / blobdiff