egammaMiddleShape Class Reference

EM cluster shower shape calculations in 2nd ECAL sampling Calculate the width in the strip layer around the eta,phi of the hottest cell in the middle layer. More...

#include <egammaMiddleShape.h>

Collaboration diagram for egammaMiddleShape:

Classes
struct	Info

Static Public Member Functions
static StatusCode	execute (const xAOD::CaloCluster &cluster, const CaloDetDescrManager &cmgr, const CaloCellContainer &cell_container, Info &info, bool doRetaOnly=false)

Detailed Description

EM cluster shower shape calculations in 2nd ECAL sampling Calculate the width in the strip layer around the eta,phi of the hottest cell in the middle layer.

Author

Frederic Derue derue.nosp@m.@lpn.nosp@m.he.in.nosp@m.2p3..nosp@m.fr

Christos Anastopoulos

Definition at line 27 of file egammaMiddleShape.h.

Member Function Documentation

execute()

StatusCode egammaMiddleShape::execute ( const xAOD::CaloCluster & cluster, const CaloDetDescrManager & cmgr, const CaloCellContainer & cell_container, Info & info, bool doRetaOnly = false )

static

Definition at line 17 of file egammaMiddleShape.cxx.

{
  //
  // Estimate shower shapes from 2nd compartment
  // based on hottest cell and deta,dphi
  // with eta = cluster->eta(sam)
  //      phi = cluster->phi(sam)
  // and search for hottest cell in a 7X7 window
  // in the second sampling
  //
  //
  StatusCode sc = StatusCode::SUCCESS;
  // check if cluster is in barrel or in the end-cap
  if (!cluster.inBarrel() && !cluster.inEndcap()) {
    return sc;
  }
 
  // check if cluster is in barrel or end-cap
  const bool in_barrel = egammaEnergyPositionAllSamples::inBarrel(cluster, 2);
 
  // define accordingly position of CaloSampling
  const CaloSampling::CaloSample sam = in_barrel ? CaloSampling::EMB2 : CaloSampling::EME2;
 
  // granularity in (eta,phi) in the pre sampler
  // CaloCellList needs both enums: subCalo and CaloSample
  bool barrel = false;
  CaloCell_ID::SUBCALO subcalo = CaloCell_ID::LAREM;
  int sampling_or_module = 0;
 
  float etacell = cluster.etamax(sam);
  double eta = cluster.etaSample(sam);
  double phi = cluster.phiSample(sam);
  if ((eta == 0. && phi == 0.) || std::abs(eta) > 100) {
    return sc;
  }
 
  CaloDetDescrManager::decode_sample(subcalo, barrel, sampling_or_module, sam);
 
  // Get the corresponding grannularities : needs to know where you are
  //                  the easiest is to look for the CaloDetDescrElement
  const CaloDetDescrElement* dde =
    cmgr.get_element(subcalo, sampling_or_module, barrel, eta, phi);
  // if object does not exist then return
  if (!dde) {
    return sc;
  }
  // local granularity
  double deta = dde->deta();
  double dphi = dde->dphi();
 
  // Find the hottest cell
  // in a 7x7 (7deta,7*dphi) window
  // opened in the eta/phi of the
  // cluster in this sampling
  CaloLayerCalculator calc;
  sc = calc.fill(cmgr,
                 &cell_container,
                 cluster.etaSample(sam),
                 cluster.phiSample(sam),
                 7. * deta,
                 7. * dphi,
                 sam);
  double etamax = calc.etarmax();
  double phimax = calc.phirmax();
 
  //select the widest cell list we will use
  //i.e a 7x7 around the found hottest cell
  CaloCellList cell_list(&cmgr, &cell_container);
  cell_list.select(etamax, phimax, 7. * deta, 7. * dphi, sam);
 
  // Using that list do the filling
  // of all the sub windows.
 
  // 7x7
  calc.fill(cell_list.begin(),
            cell_list.end(),
            etamax,
            phimax,
            7. * deta,
            7. * dphi,
            sam);
  info.e277 = calc.em();
  // 3X7
  calc.fill(cell_list.begin(),
            cell_list.end(),
            etamax,
            phimax,
            3. * deta,
            7. * dphi,
            sam);
  info.e237 = calc.em();
 
  if (!doRetaOnly) {
    // estimate the relevant quantities around the hottest cell
    // in the following eta X phi windows
    // 3X3
    calc.fill(cell_list.begin(),
              cell_list.end(),
              etamax,
              phimax,
              3. * deta,
              3. * dphi,
              sam);
    info.e233 = calc.em();
    // 3X5
    calc.fill(cell_list.begin(),
              cell_list.end(),
              etamax,
              phimax,
              3. * deta,
              5. * dphi,
              sam);
    info.e235 = calc.em();
    double etaw = calc.etas();
    info.phiw = calc.phis();
    info.etaw = egammaqweta2c::Correct(eta, etacell, etaw);
    info.width = etaw;
    info.poscs2 = egammaqweta2c::RelPosition(eta, etacell);
    // 5X5
    calc.fill(cell_list.begin(),
              cell_list.end(),
              etamax,
              phimax,
              5. * deta,
              5. * dphi,
              sam);
    info.e255 = calc.em();
  }
  return sc;
}

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The documentation for this class was generated from the following files:

• egammaMiddleShape.h
• egammaMiddleShape.cxx