EgammaTransitionRegions.cxx

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/*
  Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
*/
 
// ********************************************************************
//
// NAME:     EgammaTransitionRegions.cxx
// PACKAGE:  Trigger/TrigTools/EgammaTransitionRegions.cxx
//
// AUTHOR:  Denis Oliveira Damazio <Denis.Oliveira.Damazio@cern.ch>
//
// REFERENCES: Tool to provide Transition Regions Calobration to the HLT (BASED ON OFFLINE)
//
// Created :  January 10, 2015
//
// ********************************************************************
 
#include "EgammaTransitionRegions.h"
#include "EgammaHitsShowerDepth.h"
#include "xAODTrigCalo/TrigEMCluster.h"
#include "GaudiKernel/MsgStream.h"
// Need Cosh
#include <math.h>
 
 
namespace {
 
 
const CaloSampling::CaloSample samps[2][4] =
{ { CaloSampling::PreSamplerB,
    CaloSampling::EMB1,
    CaloSampling::EMB2,
    CaloSampling::EMB3 },
  { CaloSampling::PreSamplerE,
    CaloSampling::EME1,
    CaloSampling::EME2,
    CaloSampling::EME3 }
};
 
 
} // anonymous namespace
 
StatusCode EgammaTransitionRegions::initialize(){
 
    CHECK (base_class::initialize());
 
    ATH_MSG_DEBUG( "Initialize Tool : " << name() );
 
 
 
//    unsigned int shape[] = {2};
 
    return StatusCode::SUCCESS;
}
 
StatusCode EgammaTransitionRegions::finalize(){
    ATH_MSG_DEBUG( "Finalize Tool : " << name() );
    return StatusCode::SUCCESS;
}
 
void EgammaTransitionRegions::makeCorrection(xAOD::TrigEMCluster* clus,
    const void * /*param*/) const{
 
    float the_aeta = (clus->eta());
 
    the_aeta = (the_aeta>0)?(the_aeta):(- the_aeta);
 
    //if (the_aeta >= m_etamax) return; 
 
#ifndef NDEBUG
    ATH_MSG_DEBUG(  "************************************************************************************************" );
    ATH_MSG_DEBUG(  " USING TRANSITION REGION " );
    ATH_MSG_DEBUG(  "************************************************************************************************" );
#endif
 
    CxxUtils::Array<2> correction = m_correction();
    CaloRec::Array<1> tr00 = correction[0];
    CaloRec::Array<1> tr08 = correction[1];
 
#ifndef NDEBUG
    ATH_MSG_DEBUG(  "************************************************************************************************"  );
    ATH_MSG_DEBUG(  "the_aeta ::::: " << the_aeta  );
#endif
    double corr = 1.0;
 
    // -------------------------------------------------------------
    // Compute correction for eta = 0 
    // -------------------------------------------------------------
 
    if (the_aeta < m_etamax_TR00() && the_aeta > m_etamin_TR00() ) {
#ifndef NDEBUG
        ATH_MSG_DEBUG( "Applying correction for eta = 0 (loose) "  );
    ATH_MSG_DEBUG( tr00[0] << " " <<  tr00[1] << " " <<  tr00[2]  );
#endif
    corr = ( tr00[0] - tr00[1] / (exp( tr00[2] - the_aeta ) + exp( tr00[3]*( the_aeta - tr00[4]))+tr00[5]));
    }
    else if ( the_aeta < m_etamin_TR00() ) {
    corr = tr00[6];
#ifndef NDEBUG
    ATH_MSG_DEBUG( "Applying correction for eta = 0 (tight) "  );
#endif
    }
 
    // -------------------------------------------------------------
    // Compute correction for eta = 0.8
    // -------------------------------------------------------------
 
    if (the_aeta < m_etamax_TR08() && the_aeta > m_etamin_TR08() ) {
#ifndef NDEBUG
        ATH_MSG_DEBUG( "Applying correction for eta = 0.8 (loose) "  );
    ATH_MSG_DEBUG( tr08[0] << " " <<  tr08[1] << " " <<  tr08[2]  );
#endif
    corr = (tr08[0] - tr08[1] / (exp( tr08[2] - the_aeta ) +
            exp( tr08[3] *( the_aeta - tr08[4] )) + tr08[5] )); 
    }
 
 
#ifndef NDEBUG
      ATH_MSG_DEBUG( "EgammaTransitionRegions::Energy before correction --> " << clus->energy()
                     << " Correction --> " << corr  );
#endif
    if ( corr == 1 ) return;
 
 
// -------------------------------------------------------------
// Apply the correction 
// -------------------------------------------------------------
 
  // update sampling energies
  for (int sampling=1; sampling<=3; sampling++){
      if (the_aeta < 1.37 )
        clus->setEnergy (samps[0][sampling],
                            clus->energy(samps[0][sampling]) / corr );
  }
 
    clus->setEnergy(clus->energy()/corr);
 
    clus->setEt(clus->energy()/cosh(the_aeta));
 
}