ALFAHitAnalysis.cxx

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
#include "ALFAHitAnalysis.h"
 
// Section of includes for Pixel and SCT tests
#include "ALFA_SimEv/ALFA_HitCollection.h"
#include "StoreGate/ReadHandle.h"
 
 
 
StatusCode ALFAHitAnalysis::initialize() {
  ATH_MSG_DEBUG( "Initializing ALFAHitAnalysis" );
 
  ATH_CHECK(m_readKey.initialize());
  std::stringstream s;
  for (unsigned int j=0; j<8; j++) {
    s.str("");
    s << "edep_in_det_no." << j+1;
    float Emax = 5;
    if (j==3) Emax = 150;
    m_h_E_full_sum_h[j] = new TH1D(s.str().c_str(), s.str().c_str(), 100, 0, Emax);
    m_h_E_full_sum_h[j]->StatOverflows();
    ATH_CHECK( histSvc()->regHist( m_path + m_h_E_full_sum_h[j]->GetName(), m_h_E_full_sum_h[j] ) );
 
    s.str("");
    s << "edep_per_layer_det_no." << j+1;
    m_h_E_layer_sum_h[j] = new TH1D(s.str().c_str(), s.str().c_str(), 100, 0, 15);
    m_h_E_layer_sum_h[j]->StatOverflows();
    ATH_CHECK( histSvc()->regHist( m_path + m_h_E_layer_sum_h[j]->GetName(), m_h_E_layer_sum_h[j] ) );
 
    s.str("");
    s << "hit_layer_det_no." << j+1;
    m_h_hit_layer[j] = new TH1D(s.str().c_str(), s.str().c_str(), 50, 0, 50);
    m_h_hit_layer[j]->StatOverflows();
    ATH_CHECK( histSvc()->regHist( m_path + m_h_hit_layer[j]->GetName(), m_h_hit_layer[j] ) );
 
    s.str("");
    s << "hit_fiber_det_no." << j+1;
    m_h_hit_fiber[j] = new TH1D(s.str().c_str(), s.str().c_str(), 100, 0, 60);
    m_h_hit_fiber[j]->StatOverflows();
    ATH_CHECK( histSvc()->regHist( m_path + m_h_hit_fiber[j]->GetName(), m_h_hit_fiber[j] ) );
  }
 
  m_tree = new TTree("ALFA", "ALFA");
  std::string fullNtupleName =  "/" + m_ntupleFileName + "/" ;
  ATH_CHECK(histSvc()->regTree(fullNtupleName,m_tree));
  
  m_tree->Branch("plate", &m_plate);
  m_tree->Branch("station", &m_station);
  m_tree->Branch("energy", &m_energy);
  m_tree->Branch("fiber", &m_fiber);
  
  return StatusCode::SUCCESS;
}        
 
 
StatusCode ALFAHitAnalysis::execute(const EventContext& ctx) {
  ATH_MSG_DEBUG( "In ALFAHitAnalysis::execute()" );
  
  m_station->clear();
  m_plate->clear();
  m_fiber->clear();
  m_sign->clear();
  m_energy->clear();
 
  //cleaning
  int fiber{}, plate{}, sign{}, station{};
  //Local variable E_fiber_sum uses 81920 bytes of stack space
  //coverity[STACK_USE]
  double E_fiber_sum[8][10][64][2]{}, E_full_sum[8]{}, E_layer_sum[8][20]{};
  ALFA_HitConstIter iter;
  const ALFA_HitCollection* col_alfa{nullptr};
  ATH_CHECK(SG::get(col_alfa, m_readKey, ctx));
  for (iter = (*col_alfa).begin(); iter != (*col_alfa).end(); ++iter) {
    station = (*iter).GetStationNumber();
    plate = (*iter).GetPlateNumber();
    fiber = (*iter).GetFiberNumber();
    sign = (*iter).GetSignFiber();
    E_fiber_sum[station-1][plate-1][fiber-1][(1-sign)/2] += ((*iter).GetEnergyDeposit());
 
    m_station->push_back(station);
    m_plate->push_back(plate);
    m_fiber->push_back(fiber);
    m_sign->push_back(sign);
    m_energy->push_back((*iter).GetEnergyDeposit());
  } // End iteration
 
  for (int l=0; l<8; l++){
    for (int i=0; i<10; i++){
      for (int j=0; j<64; j++){
    for (int k=0; k<2; k++){
      E_full_sum[l] += E_fiber_sum[l][i][j][k];
      E_layer_sum[l][2*i+k] += E_fiber_sum[l][i][j][k];
      if (E_fiber_sum[l][i][j][k] > 0.) {
        m_h_hit_layer[l]->Fill(2*i+k+1);
        m_h_hit_fiber[l]->Fill(j+1);
      }
    }
      }
    }
  }
  for (int l=0; l<8; l++) {
    m_h_E_full_sum_h[l]->Fill(E_full_sum[l]);
    for (int i = 0; i< 20; i++) {
      m_h_E_layer_sum_h[l]->Fill(E_layer_sum[l][i]);
    }
  }
 
  if (m_tree) m_tree->Fill();
  
  return StatusCode::SUCCESS;
}