ExGflash2ParallelWorld.cc

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/// \file ExGflash2ParallelWorld.cc
/// \brief Implementation of the ExGflash2ParallelWorld class
 
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// User Classes
#include "ExGflash2ParallelWorld.hh"
 
// G4 Classes
#include "G4AutoDelete.hh"
#include "G4Box.hh"
#include "G4Colour.hh"
#include "G4LogicalVolume.hh"
#include "G4Material.hh"
#include "G4NistManager.hh"
#include "G4PVPlacement.hh"
#include "G4SystemOfUnits.hh"
#include "G4ThreeVector.hh"
#include "G4VPhysicalVolume.hh"
#include "G4VisAttributes.hh"
#include "globals.hh"
 
// fast simulation
#include "GFlashHitMaker.hh"
#include "GFlashHomoShowerParameterisation.hh"
#include "GFlashParticleBounds.hh"
#include "GFlashShowerModel.hh"
 
#include "G4FastSimulationManager.hh"
 
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ExGflash2ParallelWorld::ExGflash2ParallelWorld(G4String aWorldName)
  : G4VUserParallelWorld(aWorldName)
{
  G4cout << "ExGflash2ParallelWorld::Parralel world constructor" << G4endl;
}
 
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ExGflash2ParallelWorld::~ExGflash2ParallelWorld()
{
  delete fFastShowerModel;
  delete fParameterisation;
  delete fParticleBounds;
  delete fHitMaker;
}
 
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void ExGflash2ParallelWorld::Construct()
{
  // In parallel world material does not matter
  G4Material* dummy = nullptr;
 
  // Build parallel/ghost geometry:
  auto ghostLogicalVolume = GetWorld()->GetLogicalVolume();
 
  // Use part of the Ex1GflashDetectorConstruction (without individual crystals)
 
  G4int nbOfCrystals = 10;  // this are the crystals PER ROW in this example
                            // cube of 10 x 10 crystals
                            // don't change it @the moment, since
                            // the readout in event action assumes this
                            // dimensions and is not automatically adapted
                            // in this version of the example :-(
  // Simplified `CMS-like` PbWO4 crystal calorimeter
  G4double calo_xside = 31 * cm;
  G4double calo_yside = 31 * cm;
  G4double calo_zside = 24 * cm;
 
  G4double crystalWidth = 3 * cm;
  G4double crystalLength = 24 * cm;
 
  calo_xside = (crystalWidth * nbOfCrystals) + 1 * cm;
  calo_yside = (crystalWidth * nbOfCrystals) + 1 * cm;
  calo_zside = crystalLength;
 
  auto calo_box = new G4Box("CMS calorimeter",  // its name
                            calo_xside / 2.,  // size
                            calo_yside / 2., calo_zside / 2.);
  auto calo_log = new G4LogicalVolume(calo_box,  // its solid
                                      dummy,  // its material
                                      "calo log",  // its name
                                      nullptr,  // opt: fieldManager
                                      nullptr,  // opt: SensitiveDetector
                                      nullptr);  // opt: UserLimit
 
  G4double xpos = 0.0;
  G4double ypos = 0.0;
  G4double zpos = 100.0 * cm;
  new G4PVPlacement(nullptr, G4ThreeVector(xpos, ypos, zpos), calo_log, "calorimeter",
                    ghostLogicalVolume, false, 1);
 
  auto caloVisAtt = new G4VisAttributes(G4Colour(1.0, 1.0, 1.0));
  calo_log->SetVisAttributes(caloVisAtt);
 
  // define the fParameterisation region
  fRegion = new G4Region("crystals");
  calo_log->SetRegion(fRegion);
  fRegion->AddRootLogicalVolume(calo_log);
}
 
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void ExGflash2ParallelWorld::ConstructSD()
{
  // Get nist material manager
  G4NistManager* nistManager = G4NistManager::Instance();
  G4Material* pbWO4 = nistManager->FindOrBuildMaterial("G4_PbWO4");
  // -- fast simulation models:
  // **********************************************
  // * Initializing shower modell
  // ***********************************************
  G4cout << "Creating shower parameterization models" << G4endl;
  fFastShowerModel = new GFlashShowerModel("fFastShowerModel", fRegion);
  fParameterisation = new GFlashHomoShowerParameterisation(pbWO4);
  fFastShowerModel->SetParameterisation(*fParameterisation);
  // Energy Cuts to kill particles:
  fParticleBounds = new GFlashParticleBounds();
  fFastShowerModel->SetParticleBounds(*fParticleBounds);
  // Makes the EnergieSpots
  fHitMaker = new GFlashHitMaker();
  fFastShowerModel->SetHitMaker(*fHitMaker);
  G4cout << "end shower parameterization." << G4endl;
  // **********************************************
}
 
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