gflash3/src/ExGflash3DetectorConstruction.cc

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0026 //
0027 /// \file ExGflash3DetectorConstruction.cc
0028 /// \brief Implementation of the ExGflash3DetectorConstruction class
0029 //
0030 // Created by Joanna Weng 26.11.2004
0031
0032 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0033 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0034
0035 // User Classes
0036 #include "ExGflash3DetectorConstruction.hh"
0037
0038 // G4 Classes
0039 #include "G4AutoDelete.hh"
0040 #include "G4Box.hh"
0041 #include "G4Colour.hh"
0042 #include "G4LogicalVolume.hh"
0043 #include "G4Material.hh"
0044 #include "G4NistManager.hh"
0045 #include "G4PVPlacement.hh"
0046 #include "G4SDManager.hh"
0047 #include "G4SystemOfUnits.hh"
0048 #include "G4ThreeVector.hh"
0049 #include "G4VPhysicalVolume.hh"
0050 #include "G4VisAttributes.hh"
0051 #include "globals.hh"
0052
0053 // fast simulation
0054 #include "GFlashHitMaker.hh"
0055 #include "GFlashHomoShowerParameterisation.hh"
0056 #include "GFlashParticleBounds.hh"
0057 #include "GFlashShowerModel.hh"
0058
0059 #include "G4FastSimulationManager.hh"
0060
0061 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0062
0063 ExGflash3DetectorConstruction::ExGflash3DetectorConstruction()
0064 {
0065   G4cout << "ExGflash3DetectorConstruction::Detector constructor" << G4endl;
0066 }
0067
0068 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0069
0070 ExGflash3DetectorConstruction::~ExGflash3DetectorConstruction()
0071 {
0072   delete fFastShowerModel;
0073   delete fParameterisation;
0074   delete fParticleBounds;
0075   delete fHitMaker;
0076 }
0077
0078 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0079
0080 G4VPhysicalVolume* ExGflash3DetectorConstruction::Construct()
0081 {
0082   //--------- Definitions of Solids, Logical Volumes, Physical Volumes ---------
0083   G4cout << "Defining the materials" << G4endl;
0084   // Get nist material manager
0085   G4NistManager* nistManager = G4NistManager::Instance();
0086   // Build materials
0087   G4Material* air = nistManager->FindOrBuildMaterial("G4_AIR");
0088   G4Material* pbWO4 = nistManager->FindOrBuildMaterial("G4_PbWO4");
0089
0090   /*******************************
0091    * The Experimental Hall       *
0092    *******************************/
0093   G4double experimentalHall_x = 1000. * cm;
0094   G4double experimentalHall_y = 1000. * cm;
0095   G4double experimentalHall_z = 1000. * cm;
0096
0097   G4VSolid* experimentalHall_box = new G4Box("expHall_box",  // World Volume
0098                                              experimentalHall_x,  // x size
0099                                              experimentalHall_y,  // y size
0100                                              experimentalHall_z);  // z size
0101
0102   auto experimentalHallLog = new G4LogicalVolume(experimentalHall_box, air, "expHallLog",
0103                                                  nullptr,  // opt: fieldManager
0104                                                  nullptr,  // opt: SensitiveDetector
0105                                                  nullptr);  // opt: UserLimits
0106   G4VPhysicalVolume* experimentalHall_phys =
0107     new G4PVPlacement(nullptr,
0108                       G4ThreeVector(),  // at (0,0,0)
0109                       "expHall", experimentalHallLog, nullptr, false, 0);
0110
0111   //------------------------------
0112   // Calorimeter segments
0113   //------------------------------
0114   // Simplified `CMS-like` PbWO4 crystal calorimeter
0115
0116   G4int nbOfCrystals = 10;  // this are the crystals PER ROW in this example
0117                             // cube of 10 x 10 crystals
0118                             // don't change it @the moment, since
0119                             // the readout in event action assumes this
0120                             // dimensions and is not automatically adapted
0121                             // in this version of the example :-(
0122   // Simplified `CMS-like` PbWO4 crystal calorimeter
0123   G4double calo_xside = 31 * cm;
0124   G4double calo_yside = 31 * cm;
0125   G4double calo_zside = 24 * cm;
0126
0127   G4double crystalWidth = 3 * cm;
0128   G4double crystalLength = 24 * cm;
0129
0130   calo_xside = (crystalWidth * nbOfCrystals) + 1 * cm;
0131   calo_yside = (crystalWidth * nbOfCrystals) + 1 * cm;
0132   calo_zside = crystalLength;
0133
0134   auto calo_box = new G4Box("CMS calorimeter",  // its name
0135                             calo_xside / 2.,  // size
0136                             calo_yside / 2., calo_zside / 2.);
0137   auto caloLog = new G4LogicalVolume(calo_box,  // its solid
0138                                      pbWO4,  // its material
0139                                      "calo log",  // its name
0140                                      nullptr,  // opt: fieldManager
0141                                      nullptr,  // opt: SensitiveDetector
0142                                      nullptr);  // opt: UserLimit
0143
0144   G4double xpos = 0.0;
0145   G4double ypos = 0.0;
0146   G4double zpos = 100.0 * cm;
0147   new G4PVPlacement(nullptr, G4ThreeVector(xpos, ypos, zpos), caloLog, "calorimeter",
0148                     experimentalHallLog, false, 1);
0149
0150   // Individual crystals are created as part of the readout geometry in the parallel world
0151
0152   experimentalHallLog->SetVisAttributes(G4VisAttributes::GetInvisible());
0153   auto caloVisAtt = new G4VisAttributes(G4Colour(1.0, 1.0, 1.0));
0154   caloLog->SetVisAttributes(caloVisAtt);
0155
0156   // define the fParameterisation region
0157   fRegion = new G4Region("crystals");
0158   caloLog->SetRegion(fRegion);
0159   fRegion->AddRootLogicalVolume(caloLog);
0160
0161   return experimentalHall_phys;
0162 }
0163
0164 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0165
0166 void ExGflash3DetectorConstruction::ConstructSDandField()
0167 {
0168   // SD moved to parallel world
0169
0170   // -- fast simulation models:
0171   // **********************************************
0172   // * Initializing shower modell
0173   // ***********************************************
0174   G4cout << "Creating shower parameterization models" << G4endl;
0175   fFastShowerModel = new GFlashShowerModel("fFastShowerModel", fRegion);
0176   fParameterisation = new GFlashHomoShowerParameterisation(fRegion->GetMaterialIterator()[0]);
0177   fFastShowerModel->SetParameterisation(*fParameterisation);
0178   // Energy Cuts to kill particles:
0179   fParticleBounds = new GFlashParticleBounds();
0180   fFastShowerModel->SetParticleBounds(*fParticleBounds);
0181   // Makes the EnergieSpots
0182   fHitMaker = new GFlashHitMaker();
0183   // Important: use SD defined in different geometry
0184   fHitMaker->SetNameOfWorldWithSD("parallelWorld");
0185   fFastShowerModel->SetHitMaker(*fHitMaker);
0186   G4cout << "end shower parameterization." << G4endl;
0187   // **********************************************
0188 }
0189
0190 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......