Gabriele Cosmo
172 lines
6.7 KiB
C++
172 lines
6.7 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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/// \file DetectorConstruction.cc
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/// \brief Implementation of the B1::DetectorConstruction class
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#include "DetectorConstruction.hh"
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#include "G4Box.hh"
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#include "G4Cons.hh"
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#include "G4LogicalVolume.hh"
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#include "G4NistManager.hh"
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#include "G4Orb.hh"
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#include "G4PVPlacement.hh"
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#include "G4RunManager.hh"
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#include "G4Sphere.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4Trd.hh"
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namespace B1
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{
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VPhysicalVolume* DetectorConstruction::Construct()
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{
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// Get nist material manager
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G4NistManager* nist = G4NistManager::Instance();
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// Envelope parameters
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//
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G4double env_sizeXY = 20 * cm, env_sizeZ = 30 * cm;
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G4Material* env_mat = nist->FindOrBuildMaterial("G4_WATER");
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// Option to switch on/off checking of volumes overlaps
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//
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G4bool checkOverlaps = true;
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//
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// World
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//
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G4double world_sizeXY = 1.2 * env_sizeXY;
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G4double world_sizeZ = 1.2 * env_sizeZ;
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G4Material* world_mat = nist->FindOrBuildMaterial("G4_AIR");
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auto solidWorld =
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new G4Box("World", // its name
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0.5 * world_sizeXY, 0.5 * world_sizeXY, 0.5 * world_sizeZ); // its size
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auto logicWorld = new G4LogicalVolume(solidWorld, // its solid
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world_mat, // its material
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"World"); // its name
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auto physWorld = new G4PVPlacement(nullptr, // no rotation
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G4ThreeVector(), // at (0,0,0)
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logicWorld, // its logical volume
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"World", // its name
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nullptr, // its mother volume
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false, // no boolean operation
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0, // copy number
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checkOverlaps); // overlaps checking
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//
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// Envelope
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//
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auto solidEnv = new G4Box("Envelope", // its name
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0.5 * env_sizeXY, 0.5 * env_sizeXY, 0.5 * env_sizeZ); // its size
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auto logicEnv = new G4LogicalVolume(solidEnv, // its solid
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env_mat, // its material
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"Envelope"); // its name
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new G4PVPlacement(nullptr, // no rotation
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G4ThreeVector(), // at (0,0,0)
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logicEnv, // its logical volume
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"Envelope", // its name
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logicWorld, // its mother volume
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false, // no boolean operation
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0, // copy number
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checkOverlaps); // overlaps checking
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//
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// Shape 1
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//
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G4Material* shape1_mat = nist->FindOrBuildMaterial("G4_A-150_TISSUE");
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G4ThreeVector pos1 = G4ThreeVector(0, 2 * cm, -7 * cm);
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// Conical section shape
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G4double shape1_rmina = 0. * cm, shape1_rmaxa = 2. * cm;
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G4double shape1_rminb = 0. * cm, shape1_rmaxb = 4. * cm;
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G4double shape1_hz = 3. * cm;
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G4double shape1_phimin = 0. * deg, shape1_phimax = 360. * deg;
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auto solidShape1 = new G4Cons("Shape1", shape1_rmina, shape1_rmaxa, shape1_rminb, shape1_rmaxb,
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shape1_hz, shape1_phimin, shape1_phimax);
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auto logicShape1 = new G4LogicalVolume(solidShape1, // its solid
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shape1_mat, // its material
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"Shape1"); // its name
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new G4PVPlacement(nullptr, // no rotation
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pos1, // at position
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logicShape1, // its logical volume
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"Shape1", // its name
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logicEnv, // its mother volume
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false, // no boolean operation
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0, // copy number
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checkOverlaps); // overlaps checking
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//
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// Shape 2
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//
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G4Material* shape2_mat = nist->FindOrBuildMaterial("G4_BONE_COMPACT_ICRU");
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G4ThreeVector pos2 = G4ThreeVector(0, -1 * cm, 7 * cm);
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// Trapezoid shape
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G4double shape2_dxa = 12 * cm, shape2_dxb = 12 * cm;
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G4double shape2_dya = 10 * cm, shape2_dyb = 16 * cm;
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G4double shape2_dz = 6 * cm;
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auto solidShape2 =
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new G4Trd("Shape2", // its name
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0.5 * shape2_dxa, 0.5 * shape2_dxb, 0.5 * shape2_dya, 0.5 * shape2_dyb,
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0.5 * shape2_dz); // its size
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auto logicShape2 = new G4LogicalVolume(solidShape2, // its solid
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shape2_mat, // its material
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"Shape2"); // its name
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new G4PVPlacement(nullptr, // no rotation
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pos2, // at position
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logicShape2, // its logical volume
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"Shape2", // its name
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logicEnv, // its mother volume
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false, // no boolean operation
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0, // copy number
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checkOverlaps); // overlaps checking
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// Set Shape2 as scoring volume
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//
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fScoringVolume = logicShape2;
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//
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// always return the physical World
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//
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return physWorld;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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} // namespace B1
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