[807] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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[1230] | 27 | // $Id: ExN02DetectorConstruction.cc,v 1.21 2008/09/22 16:41:20 maire Exp $ |
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| 28 | // GEANT4 tag $Name: geant4-09-03-cand-01 $ |
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[807] | 29 | // |
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| 30 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 31 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 32 | |
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| 33 | #include "ExN02DetectorConstruction.hh" |
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| 34 | #include "ExN02DetectorMessenger.hh" |
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| 35 | #include "ExN02ChamberParameterisation.hh" |
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| 36 | #include "ExN02MagneticField.hh" |
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| 37 | #include "ExN02TrackerSD.hh" |
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| 38 | |
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| 39 | #include "G4Material.hh" |
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| 40 | #include "G4Box.hh" |
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| 41 | #include "G4LogicalVolume.hh" |
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| 42 | #include "G4PVPlacement.hh" |
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| 43 | #include "G4PVParameterised.hh" |
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| 44 | #include "G4SDManager.hh" |
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| 45 | #include "G4GeometryTolerance.hh" |
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| 46 | #include "G4GeometryManager.hh" |
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| 47 | |
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| 48 | #include "G4UserLimits.hh" |
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| 49 | |
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| 50 | #include "G4VisAttributes.hh" |
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| 51 | #include "G4Colour.hh" |
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| 52 | |
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| 53 | #include "G4ios.hh" |
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| 54 | |
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| 55 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 56 | |
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| 57 | ExN02DetectorConstruction::ExN02DetectorConstruction() |
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| 58 | :solidWorld(0), logicWorld(0), physiWorld(0), |
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| 59 | solidTarget(0), logicTarget(0), physiTarget(0), |
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| 60 | solidTracker(0),logicTracker(0),physiTracker(0), |
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| 61 | solidChamber(0),logicChamber(0),physiChamber(0), |
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| 62 | TargetMater(0), ChamberMater(0),chamberParam(0), |
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| 63 | stepLimit(0), fpMagField(0), |
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| 64 | fWorldLength(0.), fTargetLength(0.), fTrackerLength(0.), |
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| 65 | NbOfChambers(0) , ChamberWidth(0.), ChamberSpacing(0.) |
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| 66 | { |
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| 67 | fpMagField = new ExN02MagneticField(); |
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| 68 | detectorMessenger = new ExN02DetectorMessenger(this); |
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| 69 | } |
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| 70 | |
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| 71 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 72 | |
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| 73 | ExN02DetectorConstruction::~ExN02DetectorConstruction() |
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| 74 | { |
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| 75 | delete fpMagField; |
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| 76 | delete stepLimit; |
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| 77 | delete chamberParam; |
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| 78 | delete detectorMessenger; |
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| 79 | } |
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| 80 | |
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| 81 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 82 | |
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| 83 | G4VPhysicalVolume* ExN02DetectorConstruction::Construct() |
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| 84 | { |
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| 85 | //--------- Material definition --------- |
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| 86 | |
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| 87 | G4double a, z; |
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| 88 | G4double density, temperature, pressure; |
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| 89 | G4int nel; |
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| 90 | |
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| 91 | //Air |
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| 92 | G4Element* N = new G4Element("Nitrogen", "N", z=7., a= 14.01*g/mole); |
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| 93 | G4Element* O = new G4Element("Oxygen" , "O", z=8., a= 16.00*g/mole); |
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| 94 | |
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| 95 | G4Material* Air = new G4Material("Air", density= 1.29*mg/cm3, nel=2); |
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| 96 | Air->AddElement(N, 70*perCent); |
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| 97 | Air->AddElement(O, 30*perCent); |
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| 98 | |
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| 99 | //Lead |
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| 100 | G4Material* Pb = |
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| 101 | new G4Material("Lead", z=82., a= 207.19*g/mole, density= 11.35*g/cm3); |
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| 102 | |
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| 103 | //Xenon gas |
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| 104 | G4Material* Xenon = |
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| 105 | new G4Material("XenonGas", z=54., a=131.29*g/mole, density= 5.458*mg/cm3, |
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| 106 | kStateGas, temperature= 293.15*kelvin, pressure= 1*atmosphere); |
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| 107 | |
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| 108 | // Print all the materials defined. |
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| 109 | // |
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| 110 | G4cout << G4endl << "The materials defined are : " << G4endl << G4endl; |
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| 111 | G4cout << *(G4Material::GetMaterialTable()) << G4endl; |
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| 112 | |
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| 113 | //--------- Sizes of the principal geometrical components (solids) --------- |
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| 114 | |
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| 115 | NbOfChambers = 5; |
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| 116 | ChamberWidth = 20*cm; |
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| 117 | ChamberSpacing = 80*cm; |
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| 118 | |
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| 119 | fTrackerLength = (NbOfChambers+1)*ChamberSpacing; // Full length of Tracker |
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| 120 | fTargetLength = 5.0 * cm; // Full length of Target |
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| 121 | |
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| 122 | TargetMater = Pb; |
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| 123 | ChamberMater = Xenon; |
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| 124 | |
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| 125 | fWorldLength= 1.2 *(fTargetLength+fTrackerLength); |
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| 126 | |
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| 127 | G4double targetSize = 0.5*fTargetLength; // Half length of the Target |
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| 128 | G4double trackerSize = 0.5*fTrackerLength; // Half length of the Tracker |
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| 129 | |
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| 130 | //--------- Definitions of Solids, Logical Volumes, Physical Volumes --------- |
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| 131 | |
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| 132 | //------------------------------ |
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| 133 | // World |
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| 134 | //------------------------------ |
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| 135 | |
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| 136 | G4double HalfWorldLength = 0.5*fWorldLength; |
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| 137 | |
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| 138 | G4GeometryManager::GetInstance()->SetWorldMaximumExtent(fWorldLength); |
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| 139 | G4cout << "Computed tolerance = " |
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| 140 | << G4GeometryTolerance::GetInstance()->GetSurfaceTolerance()/mm |
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| 141 | << " mm" << G4endl; |
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| 142 | |
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| 143 | solidWorld= new G4Box("world",HalfWorldLength,HalfWorldLength,HalfWorldLength); |
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| 144 | logicWorld= new G4LogicalVolume( solidWorld, Air, "World", 0, 0, 0); |
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| 145 | |
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| 146 | // Must place the World Physical volume unrotated at (0,0,0). |
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| 147 | // |
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| 148 | physiWorld = new G4PVPlacement(0, // no rotation |
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| 149 | G4ThreeVector(), // at (0,0,0) |
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| 150 | logicWorld, // its logical volume |
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| 151 | "World", // its name |
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| 152 | 0, // its mother volume |
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| 153 | false, // no boolean operations |
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| 154 | 0); // copy number |
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| 155 | |
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| 156 | //------------------------------ |
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| 157 | // Target |
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| 158 | //------------------------------ |
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| 159 | |
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| 160 | G4ThreeVector positionTarget = G4ThreeVector(0,0,-(targetSize+trackerSize)); |
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| 161 | |
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| 162 | solidTarget = new G4Box("target",targetSize,targetSize,targetSize); |
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| 163 | logicTarget = new G4LogicalVolume(solidTarget,TargetMater,"Target",0,0,0); |
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| 164 | physiTarget = new G4PVPlacement(0, // no rotation |
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| 165 | positionTarget, // at (x,y,z) |
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| 166 | logicTarget, // its logical volume |
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| 167 | "Target", // its name |
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| 168 | logicWorld, // its mother volume |
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| 169 | false, // no boolean operations |
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| 170 | 0); // copy number |
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| 171 | |
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| 172 | G4cout << "Target is " << fTargetLength/cm << " cm of " |
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| 173 | << TargetMater->GetName() << G4endl; |
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| 174 | |
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| 175 | //------------------------------ |
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| 176 | // Tracker |
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| 177 | //------------------------------ |
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| 178 | |
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| 179 | G4ThreeVector positionTracker = G4ThreeVector(0,0,0); |
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| 180 | |
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| 181 | solidTracker = new G4Box("tracker",trackerSize,trackerSize,trackerSize); |
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| 182 | logicTracker = new G4LogicalVolume(solidTracker , Air, "Tracker",0,0,0); |
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| 183 | physiTracker = new G4PVPlacement(0, // no rotation |
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| 184 | positionTracker, // at (x,y,z) |
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| 185 | logicTracker, // its logical volume |
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| 186 | "Tracker", // its name |
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| 187 | logicWorld, // its mother volume |
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| 188 | false, // no boolean operations |
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| 189 | 0); // copy number |
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| 190 | |
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| 191 | //------------------------------ |
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| 192 | // Tracker segments |
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| 193 | //------------------------------ |
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| 194 | // |
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| 195 | // An example of Parameterised volumes |
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| 196 | // dummy values for G4Box -- modified by parameterised volume |
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| 197 | |
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| 198 | solidChamber = new G4Box("chamber", 100*cm, 100*cm, 10*cm); |
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| 199 | logicChamber = new G4LogicalVolume(solidChamber,ChamberMater,"Chamber",0,0,0); |
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| 200 | |
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| 201 | G4double firstPosition = -trackerSize + 0.5*ChamberWidth; |
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| 202 | G4double firstLength = fTrackerLength/10; |
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| 203 | G4double lastLength = fTrackerLength; |
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| 204 | |
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| 205 | chamberParam = new ExN02ChamberParameterisation( |
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| 206 | NbOfChambers, // NoChambers |
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| 207 | firstPosition, // Z of center of first |
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| 208 | ChamberSpacing, // Z spacing of centers |
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| 209 | ChamberWidth, // Width Chamber |
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| 210 | firstLength, // lengthInitial |
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| 211 | lastLength); // lengthFinal |
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| 212 | |
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| 213 | // dummy value : kZAxis -- modified by parameterised volume |
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| 214 | // |
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| 215 | physiChamber = new G4PVParameterised( |
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| 216 | "Chamber", // their name |
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| 217 | logicChamber, // their logical volume |
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| 218 | logicTracker, // Mother logical volume |
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| 219 | kZAxis, // Are placed along this axis |
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| 220 | NbOfChambers, // Number of chambers |
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| 221 | chamberParam); // The parametrisation |
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| 222 | |
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| 223 | G4cout << "There are " << NbOfChambers << " chambers in the tracker region. " |
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| 224 | << "The chambers are " << ChamberWidth/mm << " mm of " |
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| 225 | << ChamberMater->GetName() << "\n The distance between chamber is " |
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| 226 | << ChamberSpacing/cm << " cm" << G4endl; |
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| 227 | |
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| 228 | //------------------------------------------------ |
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| 229 | // Sensitive detectors |
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| 230 | //------------------------------------------------ |
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| 231 | |
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| 232 | G4SDManager* SDman = G4SDManager::GetSDMpointer(); |
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| 233 | |
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| 234 | G4String trackerChamberSDname = "ExN02/TrackerChamberSD"; |
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| 235 | ExN02TrackerSD* aTrackerSD = new ExN02TrackerSD( trackerChamberSDname ); |
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| 236 | SDman->AddNewDetector( aTrackerSD ); |
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| 237 | logicChamber->SetSensitiveDetector( aTrackerSD ); |
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| 238 | |
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| 239 | //--------- Visualization attributes ------------------------------- |
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| 240 | |
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| 241 | G4VisAttributes* BoxVisAtt= new G4VisAttributes(G4Colour(1.0,1.0,1.0)); |
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| 242 | logicWorld ->SetVisAttributes(BoxVisAtt); |
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| 243 | logicTarget ->SetVisAttributes(BoxVisAtt); |
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| 244 | logicTracker->SetVisAttributes(BoxVisAtt); |
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| 245 | |
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| 246 | G4VisAttributes* ChamberVisAtt = new G4VisAttributes(G4Colour(1.0,1.0,0.0)); |
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| 247 | logicChamber->SetVisAttributes(ChamberVisAtt); |
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| 248 | |
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| 249 | //--------- example of User Limits ------------------------------- |
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| 250 | |
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| 251 | // below is an example of how to set tracking constraints in a given |
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| 252 | // logical volume(see also in N02PhysicsList how to setup the processes |
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| 253 | // G4StepLimiter or G4UserSpecialCuts). |
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| 254 | |
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| 255 | // Sets a max Step length in the tracker region, with G4StepLimiter |
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| 256 | // |
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| 257 | G4double maxStep = 0.5*ChamberWidth; |
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| 258 | stepLimit = new G4UserLimits(maxStep); |
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| 259 | logicTracker->SetUserLimits(stepLimit); |
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| 260 | |
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| 261 | // Set additional contraints on the track, with G4UserSpecialCuts |
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| 262 | // |
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| 263 | // G4double maxLength = 2*fTrackerLength, maxTime = 0.1*ns, minEkin = 10*MeV; |
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| 264 | // logicTracker->SetUserLimits(new G4UserLimits(maxStep,maxLength,maxTime, |
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| 265 | // minEkin)); |
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| 266 | |
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| 267 | return physiWorld; |
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| 268 | } |
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| 269 | |
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| 270 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 271 | |
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| 272 | void ExN02DetectorConstruction::setTargetMaterial(G4String materialName) |
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| 273 | { |
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| 274 | // search the material by its name |
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| 275 | G4Material* pttoMaterial = G4Material::GetMaterial(materialName); |
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| 276 | if (pttoMaterial) |
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| 277 | {TargetMater = pttoMaterial; |
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| 278 | logicTarget->SetMaterial(pttoMaterial); |
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| 279 | G4cout << "\n----> The target is " << fTargetLength/cm << " cm of " |
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| 280 | << materialName << G4endl; |
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| 281 | } |
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| 282 | } |
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| 283 | |
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| 284 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 285 | |
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| 286 | void ExN02DetectorConstruction::setChamberMaterial(G4String materialName) |
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| 287 | { |
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| 288 | // search the material by its name |
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| 289 | G4Material* pttoMaterial = G4Material::GetMaterial(materialName); |
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| 290 | if (pttoMaterial) |
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| 291 | {ChamberMater = pttoMaterial; |
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| 292 | logicChamber->SetMaterial(pttoMaterial); |
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| 293 | G4cout << "\n----> The chambers are " << ChamberWidth/cm << " cm of " |
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| 294 | << materialName << G4endl; |
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| 295 | } |
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| 296 | } |
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| 297 | |
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| 298 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 299 | |
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| 300 | void ExN02DetectorConstruction::SetMagField(G4double fieldValue) |
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| 301 | { |
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| 302 | fpMagField->SetFieldValue(fieldValue); |
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| 303 | } |
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| 304 | |
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| 305 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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[1230] | 306 | |
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| 307 | void ExN02DetectorConstruction::SetMaxStep(G4double maxStep) |
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| 308 | { |
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| 309 | if ((stepLimit)&&(maxStep>0.)) stepLimit->SetMaxAllowedStep(maxStep); |
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| 310 | } |
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| 311 | |
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| 312 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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