field03/src/F03DetectorConstruction.cc

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0026 /// \file field/field03/src/F03DetectorConstruction.cc
0027 /// \brief Implementation of the F03DetectorConstruction class
0028 //
0029 //
0030 //
0031 //
0032 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0033 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0034
0035 #include "F03DetectorConstruction.hh"
0036
0037 #include "F03CalorimeterSD.hh"
0038 #include "F03DetectorMessenger.hh"
0039
0040 #include "G4AutoDelete.hh"
0041 #include "G4GeometryManager.hh"
0042 #include "G4FieldBuilder.hh"
0043 #include "G4LogicalVolume.hh"
0044 #include "G4LogicalVolumeStore.hh"
0045 #include "G4Material.hh"
0046 #include "G4PVPlacement.hh"
0047 #include "G4PhysicalConstants.hh"
0048 #include "G4PhysicalVolumeStore.hh"
0049 #include "G4RunManager.hh"
0050 #include "G4SDManager.hh"
0051 #include "G4SolidStore.hh"
0052 #include "G4SystemOfUnits.hh"
0053 #include "G4Tubs.hh"
0054 #include "G4UniformMagField.hh"
0055
0056 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0057
0058 F03DetectorConstruction::F03DetectorConstruction()
0059 {
0060   fDetectorMessenger = new F03DetectorMessenger(this);
0061
0062   // create field builder
0063   // this will create commands for field parameters
0064   G4FieldBuilder::Instance();
0065   // G4FieldBuilder::Instance()->SetVerboseLevel(2);
0066
0067   auto globalFieldParameters = G4FieldBuilder::Instance()->GetFieldParameters();
0068   auto localFieldParameters = G4FieldBuilder::Instance()->CreateFieldParameters("Radiator");
0069
0070   // set default min step 0.25 mm
0071   globalFieldParameters->SetMinimumStep(0.25 * mm);
0072   localFieldParameters->SetMinimumStep(0.25 * mm);
0073
0074   // create materials
0075   DefineMaterials();
0076 }
0077
0078 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0079
0080 F03DetectorConstruction::~F03DetectorConstruction()
0081 {
0082   delete fDetectorMessenger;
0083 }
0084
0085 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0086
0087 G4VPhysicalVolume* F03DetectorConstruction::Construct()
0088 {
0089   return ConstructCalorimeter();
0090 }
0091
0092 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0093
0094 void F03DetectorConstruction::DefineMaterials()
0095 {
0096   // This function illustrates the possible ways to define materials
0097
0098   G4String name, symbol;  // a=mass of a mole;
0099   G4double a, z, density;  // z=mean number of protons;
0100   G4int nel;
0101   G4int ncomponents;
0102   G4double fractionmass, pressure, temperature;
0103
0104   //
0105   // define Elements
0106   //
0107
0108   a = 1.01 * g / mole;
0109   auto elH = new G4Element(name = "Hydrogen", symbol = "H", z = 1., a);
0110
0111   a = 12.01 * g / mole;
0112   auto elC = new G4Element(name = "Carbon", symbol = "C", z = 6., a);
0113
0114   a = 14.01 * g / mole;
0115   auto elN = new G4Element(name = "Nitrogen", symbol = "N", z = 7., a);
0116
0117   a = 16.00 * g / mole;
0118   auto elO = new G4Element(name = "Oxygen", symbol = "O", z = 8., a);
0119
0120   a = 39.948 * g / mole;
0121   auto elAr = new G4Element(name = "Argon", symbol = "Ar", z = 18., a);
0122
0123   //
0124   // define simple materials
0125   //
0126
0127   // Mylar
0128
0129   density = 1.39 * g / cm3;
0130   auto mylar = new G4Material(name = "Mylar", density, nel = 3);
0131   mylar->AddElement(elO, 2);
0132   mylar->AddElement(elC, 5);
0133   mylar->AddElement(elH, 4);
0134
0135   // Polypropelene
0136
0137   auto CH2 = new G4Material("Polypropelene", 0.91 * g / cm3, 2);
0138   CH2->AddElement(elH, 2);
0139   CH2->AddElement(elC, 1);
0140
0141   // Krypton as detector gas, STP
0142
0143   density = 3.700 * mg / cm3;
0144   a = 83.80 * g / mole;
0145   auto Kr = new G4Material(name = "Kr", z = 36., a, density);
0146
0147   // Dry air (average composition)
0148
0149   density = 1.7836 * mg / cm3;  // STP
0150   auto argon = new G4Material(name = "Argon", density, ncomponents = 1);
0151   argon->AddElement(elAr, 1);
0152
0153   density = 1.25053 * mg / cm3;  // STP
0154   auto nitrogen = new G4Material(name = "N2", density, ncomponents = 1);
0155   nitrogen->AddElement(elN, 2);
0156
0157   density = 1.4289 * mg / cm3;  // STP
0158   auto oxygen = new G4Material(name = "O2", density, ncomponents = 1);
0159   oxygen->AddElement(elO, 2);
0160
0161   density = 1.2928 * mg / cm3;  // STP
0162   density *= 1.0e-8;  // pumped vacuum
0163   temperature = STP_Temperature;
0164   pressure = 1.0e-8 * STP_Pressure;
0165
0166   auto air =
0167     new G4Material(name = "Air", density, ncomponents = 3, kStateGas, temperature, pressure);
0168   air->AddMaterial(nitrogen, fractionmass = 0.7557);
0169   air->AddMaterial(oxygen, fractionmass = 0.2315);
0170   air->AddMaterial(argon, fractionmass = 0.0128);
0171
0172   // Xenon as detector gas, STP
0173
0174   density = 5.858 * mg / cm3;
0175   a = 131.29 * g / mole;
0176   auto Xe = new G4Material(name = "Xenon", z = 54., a, density);
0177
0178   // Carbon dioxide, STP
0179
0180   density = 1.842 * mg / cm3;
0181   auto CarbonDioxide = new G4Material(name = "CO2", density, nel = 2);
0182   CarbonDioxide->AddElement(elC, 1);
0183   CarbonDioxide->AddElement(elO, 2);
0184
0185   // 80% Xe + 20% CO2, STP
0186
0187   density = 5.0818 * mg / cm3;
0188   auto Xe20CO2 = new G4Material(name = "Xe20CO2", density, ncomponents = 2);
0189   Xe20CO2->AddMaterial(Xe, fractionmass = 0.922);
0190   Xe20CO2->AddMaterial(CarbonDioxide, fractionmass = 0.078);
0191
0192   // 80% Kr + 20% CO2, STP
0193
0194   density = 3.601 * mg / cm3;
0195   auto Kr20CO2 = new G4Material(name = "Kr20CO2", density, ncomponents = 2);
0196   Kr20CO2->AddMaterial(Kr, fractionmass = 0.89);
0197   Kr20CO2->AddMaterial(CarbonDioxide, fractionmass = 0.11);
0198
0199   G4cout << *(G4Material::GetMaterialTable()) << G4endl;
0200
0201   // default materials of the calorimeter and TR radiator
0202
0203   fRadiatorMat = air;  // CH2 ;   // mylar;
0204
0205   fAbsorberMaterial = air;  //  Kr20CO2;   // XeCO2CF4;
0206
0207   fWorldMaterial = air;
0208 }
0209
0210 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0211
0212 G4VPhysicalVolume* F03DetectorConstruction::ConstructCalorimeter()
0213 {
0214   // Cleanup old geometry
0215
0216   if (fPhysiWorld) {
0217     G4GeometryManager::GetInstance()->OpenGeometry();
0218     G4PhysicalVolumeStore::GetInstance()->Clean();
0219     G4LogicalVolumeStore::GetInstance()->Clean();
0220     G4SolidStore::GetInstance()->Clean();
0221   }
0222
0223   // complete the Calor parameters definition and Print
0224
0225   ComputeCalorParameters();
0226   PrintCalorParameters();
0227
0228   G4bool checkOverlaps = true;
0229
0230   fSolidWorld = new G4Tubs("World",  // its name
0231                            0., fWorldSizeR, fWorldSizeZ / 2., 0., twopi);  // its size
0232
0233   fLogicWorld = new G4LogicalVolume(fSolidWorld,  // its solid
0234                                     fWorldMaterial,  // its material
0235                                     "World");  // its name
0236
0237   fPhysiWorld = new G4PVPlacement(nullptr,  // no rotation
0238                                   G4ThreeVector(),  // at (0,0,0)
0239                                   "World",  // its name
0240                                   fLogicWorld,  // its logical volume
0241                                   nullptr,  // its mother  volume
0242                                   false,  // no boolean op.
0243                                   0,  // copy number
0244                                   checkOverlaps);  // checkOverlaps
0245
0246   // TR radiator envelope
0247   G4double radThick = fFoilNumber * (fRadThickness + fGasGap) + fDetGap;
0248   G4double zRad = fZAbsorber - 0.5 * (radThick + fAbsorberThickness);
0249
0250   G4cout << "zRad = " << zRad / mm << " mm" << G4endl;
0251   G4cout << "radThick = " << radThick / mm << " mm" << G4endl;
0252   G4cout << "fFoilNumber = " << fFoilNumber << G4endl;
0253   G4cout << "fRadiatorMat = " << fRadiatorMat->GetName() << G4endl;
0254   G4cout << "WorldMaterial = " << fWorldMaterial->GetName() << G4endl;
0255
0256   fSolidRadiator = new G4Tubs("Radiator", 0.0, fAbsorberRadius, 0.5 * radThick, 0.0, twopi);
0257
0258   fLogicRadiator = new G4LogicalVolume(fSolidRadiator, fWorldMaterial, "Radiator");
0259
0260   fPhysiRadiator = new G4PVPlacement(nullptr, G4ThreeVector(0, 0, zRad), "Radiator", fLogicRadiator,
0261                                      fPhysiWorld, false, 0, checkOverlaps);
0262
0263   fSolidRadSlice = new G4Tubs("RadSlice", 0.0, fAbsorberRadius, 0.5 * fRadThickness, 0.0, twopi);
0264
0265   fLogicRadSlice = new G4LogicalVolume(fSolidRadSlice, fRadiatorMat, "RadSlice");
0266
0267   // Radiator slice
0268   G4double radSliceThick = fRadThickness + fGasGap;
0269   G4double zStart = 0.5 * (-radThick + radSliceThick) + fDetGap;
0270   // start on the board of radiator enevelope + det gap
0271
0272   for (G4int j = 0; j < fFoilNumber; j++) {
0273     G4double zSlice = zStart + j * radSliceThick;
0274     G4cout << zSlice / mm << " mm"
0275            << "\t";
0276
0277     fPhysiRadSlice = new G4PVPlacement(nullptr, G4ThreeVector(0., 0., zSlice), "RadSlice",
0278                                        fLogicRadSlice, fPhysiRadiator, false, j, checkOverlaps);
0279   }
0280   G4cout << G4endl;
0281
0282   // Absorber
0283
0284   fSolidAbsorber =
0285     new G4Tubs("Absorber", 1.0 * mm, fAbsorberRadius, fAbsorberThickness / 2., 0.0, twopi);
0286
0287   fLogicAbsorber = new G4LogicalVolume(fSolidAbsorber, fAbsorberMaterial, "Absorber");
0288
0289   fPhysiAbsorber = new G4PVPlacement(nullptr, G4ThreeVector(0., 0., fZAbsorber), "Absorber",
0290                                      fLogicAbsorber, fPhysiWorld, false, 0, checkOverlaps);
0291
0292   return fPhysiWorld;
0293 }
0294
0295 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0296
0297 void F03DetectorConstruction::PrintCalorParameters()
0298 {
0299   G4cout << "\n The  WORLD   is made of " << fWorldSizeZ / mm << "mm of "
0300          << fWorldMaterial->GetName();
0301   G4cout << ", the transverse size (R) of the world is " << fWorldSizeR / mm << " mm. " << G4endl;
0302   G4cout << " The ABSORBER is made of " << fAbsorberThickness / mm << "mm of "
0303          << fAbsorberMaterial->GetName();
0304   G4cout << ", the transverse size (R) is " << fAbsorberRadius / mm << " mm. " << G4endl;
0305   G4cout << " Z position of the (middle of the) absorber " << fZAbsorber / mm << "  mm." << G4endl;
0306   G4cout << G4endl;
0307 }
0308
0309 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0310
0311 void F03DetectorConstruction::SetAbsorberMaterial(G4String materialChoice)
0312 {
0313   // get the pointer to the material table
0314   const G4MaterialTable* theMaterialTable = G4Material::GetMaterialTable();
0315
0316   // search the material by its name
0317   G4Material* material;
0318   for (size_t j = 0; j < theMaterialTable->size(); j++) {
0319     material = (*theMaterialTable)[j];
0320     if (material->GetName() == materialChoice) {
0321       fAbsorberMaterial = material;
0322       fLogicAbsorber->SetMaterial(material);
0323       G4RunManager::GetRunManager()->PhysicsHasBeenModified();
0324     }
0325   }
0326 }
0327
0328 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0329
0330 void F03DetectorConstruction::SetWorldMaterial(G4String materialChoice)
0331 {
0332   // get the pointer to the material table
0333   const G4MaterialTable* theMaterialTable = G4Material::GetMaterialTable();
0334
0335   // search the material by its name
0336   G4Material* material;
0337   for (size_t j = 0; j < theMaterialTable->size(); j++) {
0338     material = (*theMaterialTable)[j];
0339     if (material->GetName() == materialChoice) {
0340       fWorldMaterial = material;
0341       fLogicWorld->SetMaterial(material);
0342       G4RunManager::GetRunManager()->PhysicsHasBeenModified();
0343     }
0344   }
0345 }
0346
0347 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0348
0349 void F03DetectorConstruction::SetAbsorberThickness(G4double val)
0350 {
0351   // change Absorber thickness and recompute the calorimeter parameters
0352   fAbsorberThickness = val;
0353   ComputeCalorParameters();
0354   G4RunManager::GetRunManager()->ReinitializeGeometry();
0355 }
0356
0357 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0358
0359 void F03DetectorConstruction::SetAbsorberRadius(G4double val)
0360 {
0361   // change the transverse size and recompute the calorimeter parameters
0362   fAbsorberRadius = val;
0363   ComputeCalorParameters();
0364   G4RunManager::GetRunManager()->ReinitializeGeometry();
0365 }
0366
0367 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0368
0369 void F03DetectorConstruction::SetWorldSizeZ(G4double val)
0370 {
0371   fWorldSizeZ = val;
0372   ComputeCalorParameters();
0373   G4RunManager::GetRunManager()->ReinitializeGeometry();
0374 }
0375
0376 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0377
0378 void F03DetectorConstruction::SetWorldSizeR(G4double val)
0379 {
0380   fWorldSizeR = val;
0381   ComputeCalorParameters();
0382   G4RunManager::GetRunManager()->ReinitializeGeometry();
0383 }
0384
0385 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0386
0387 void F03DetectorConstruction::SetAbsorberZpos(G4double val)
0388 {
0389   fZAbsorber = val;
0390   ComputeCalorParameters();
0391   G4RunManager::GetRunManager()->ReinitializeGeometry();
0392 }
0393
0394 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0395
0396 void F03DetectorConstruction::SetFieldValue(G4ThreeVector value)
0397 {
0398   fFieldVector = value;
0399
0400   G4UniformMagField* magField = nullptr;
0401   if (fFieldVector != G4ThreeVector(0.,0.,0.)) {
0402     magField = new G4UniformMagField(fFieldVector);
0403   }
0404
0405   // Set field to the field builder
0406   auto fieldBuilder = G4FieldBuilder::Instance();
0407   fieldBuilder->SetGlobalField(magField);
0408 }
0409
0410 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0411
0412
0413 void F03DetectorConstruction::SetLocalFieldValue(G4ThreeVector value)
0414 {
0415   fLocalFieldVector = value;
0416
0417   G4UniformMagField* magField = nullptr;
0418   if (fLocalFieldVector != G4ThreeVector(0.,0.,0.)) {
0419     magField = new G4UniformMagField(fLocalFieldVector);
0420   }
0421
0422   // Set field to the field builder
0423   auto fieldBuilder = G4FieldBuilder::Instance();
0424   fieldBuilder->SetLocalField(magField, fLogicRadiator);
0425 }
0426
0427 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0428
0429 void F03DetectorConstruction::ConstructSDandField()
0430 {
0431   // Sensitive Detectors: Absorber
0432
0433   if (!fCalorimeterSD.Get()) {
0434     auto calorimeterSD = new F03CalorimeterSD("CalorSD", this);
0435     fCalorimeterSD.Put(calorimeterSD);
0436   }
0437   G4SDManager::GetSDMpointer()->AddNewDetector(fCalorimeterSD.Get());
0438   SetSensitiveDetector(fLogicAbsorber, fCalorimeterSD.Get());
0439
0440   // Create detector fields
0441   SetFieldValue(fFieldVector);
0442   SetLocalFieldValue(fLocalFieldVector);
0443
0444   // Construct all Geant4 field objects
0445   auto fieldBuilder = G4FieldBuilder::Instance();
0446   fieldBuilder->ConstructFieldSetup();
0447 }
0448
0449 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......