ICRP145_HumanPhantoms/src/TETDetectorConstruction.cc

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
0004 // *                                                                  *
0005 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
0006 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
0007 // * conditions of the Geant4 Software License,  included in the file *
0008 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
0009 // * include a list of copyright holders.                             *
0010 // *                                                                  *
0011 // * Neither the authors of this software system, nor their employing *
0012 // * institutes,nor the agencies providing financial support for this *
0013 // * work  make  any representation or  warranty, express or implied, *
0014 // * regarding  this  software system or assume any liability for its *
0015 // * use.  Please see the license in the file  LICENSE  and URL above *
0016 // * for the full disclaimer and the limitation of liability.         *
0017 // *                                                                  *
0018 // * This  code  implementation is the result of  the  scientific and *
0019 // * technical work of the GEANT4 collaboration.                      *
0020 // * By using,  copying,  modifying or  distributing the software (or *
0021 // * any work based  on the software)  you  agree  to acknowledge its *
0022 // * use  in  resulting  scientific  publications,  and indicate your *
0023 // * acceptance of all terms of the Geant4 Software license.          *
0024 // ********************************************************************
0025 //
0026 //
0027 // Author: Haegin Han
0028 // Reference: ICRP Publication 145. Ann. ICRP 49(3), 2020.
0029 // Geant4 Contributors: J. Allison and S. Guatelli
0030 //
0031
0032 #include "TETDetectorConstruction.hh"
0033
0034 #include "G4VisAttributes.hh"
0035
0036 TETDetectorConstruction::TETDetectorConstruction(TETModelImport* _tetData)
0037 :fWorldPhysical(nullptr), fContainer_logic(nullptr), fTetData(_tetData), fTetLogic(nullptr)
0038 {
0039  // initialisation of the variables for phantom information
0040  fPhantomSize     = fTetData -> GetPhantomSize();
0041  fPhantomBoxMin   = fTetData -> GetPhantomBoxMin();
0042  fPhantomBoxMax   = fTetData -> GetPhantomBoxMax();
0043  fNOfTetrahedrons = fTetData -> GetNumTetrahedron();
0044 }
0045
0046 TETDetectorConstruction::~TETDetectorConstruction()
0047 {
0048   delete fTetData;
0049 }
0050
0051 G4VPhysicalVolume* TETDetectorConstruction::Construct()
0052 {
0053  SetupWorldGeometry();
0054  ConstructPhantom();
0055  PrintPhantomInformation();
0056  return fWorldPhysical;
0057 }
0058
0059 void TETDetectorConstruction::SetupWorldGeometry()
0060 {
0061  // Define the world box (size: 10*10*10 m3)
0062  //
0063  G4double worldXYZ = 10. * m;
0064  G4Material* vacuum = G4NistManager::Instance()->FindOrBuildMaterial("G4_Galactic");
0065
0066  G4VSolid* worldSolid = new G4Box("worldSolid", worldXYZ/2, worldXYZ/2, worldXYZ/2);
0067
0068  auto* worldLogical = new G4LogicalVolume(worldSolid,vacuum,"worldLogical");
0069
0070  fWorldPhysical = new G4PVPlacement(nullptr,G4ThreeVector(), worldLogical,"worldPhysical", nullptr, false,0,false);
0071
0072  // Define the phantom container (10-cm margins from the bounding box of phantom)
0073  //
0074  auto* containerSolid = new G4Box("phantomBox", fPhantomSize.x()/2 + 10.*cm,
0075                                fPhantomSize.y()/2 + 10.*cm,
0076                            fPhantomSize.z()/2 + 10.*cm);
0077
0078  fContainer_logic = new G4LogicalVolume(containerSolid, vacuum, "phantomLogical");
0079
0080  new G4PVPlacement(nullptr, G4ThreeVector(), fContainer_logic, "PhantomPhysical",
0081                worldLogical, false, 0);
0082
0083  fContainer_logic->SetOptimisation(TRUE);
0084  fContainer_logic->SetSmartless( 0.5 ); // for optimization (default=2)
0085 }
0086
0087 void TETDetectorConstruction::ConstructPhantom()
0088 {
0089  // Define the tetrahedral mesh phantom as a parameterised geometry
0090  //
0091  // solid and logical volume to be used for parameterised geometry
0092  G4VSolid* tetraSolid = new G4Tet("TetSolid", G4ThreeVector(),
0093                        G4ThreeVector(1.*cm,0,0),
0094                        G4ThreeVector(0,1.*cm,0),
0095                        G4ThreeVector(0,0,1.*cm));
0096
0097   G4Material* vacuum = G4NistManager::Instance()->FindOrBuildMaterial("G4_Galactic");
0098   fTetLogic = new G4LogicalVolume(tetraSolid, vacuum, "TetLogic");
0099
0100   // physical volume (phantom) constructed as parameterised geometry
0101   new G4PVParameterised("wholePhantom",fTetLogic,fContainer_logic,
0102               kUndefined, fTetData->GetNumTetrahedron(),
0103              new TETParameterisation(fTetData));
0104 }
0105
0106 void TETDetectorConstruction::ConstructSDandField()
0107 {
0108  // Define detector (Phantom SD) and scorer (eDep)
0109  //
0110  G4SDManager* pSDman = G4SDManager::GetSDMpointer();
0111  G4String phantomSDname = "PhantomSD";
0112
0113  // MultiFunctional detector
0114  auto* MFDet = new G4MultiFunctionalDetector(phantomSDname);
0115  pSDman->AddNewDetector( MFDet );
0116
0117  // scorer for energy depositon in each organ
0118  MFDet->RegisterPrimitive(new TETPSEnergyDeposit("eDep", fTetData));
0119
0120  // attach the detector to logical volume for parameterised geometry (phantom geometry)
0121  SetSensitiveDetector(fTetLogic, MFDet);
0122 }
0123
0124 void TETDetectorConstruction::PrintPhantomInformation()
0125 {
0126  // print brief information on the imported phantom
0127  G4cout<< G4endl;
0128  G4cout.precision(3);
0129  G4cout<<"   Phantom name               "<<fTetData->GetPhantomName() << " TET phantom"<<G4endl;
0130  G4cout<<"   Phantom size               "<<fPhantomSize.x()<<" * "<<fPhantomSize.y()<<" * "<<fPhantomSize.z()<<" mm3"<<G4endl;
0131  G4cout<<"   Phantom box position (min) "<<fPhantomBoxMin.x()<<" mm, "<<fPhantomBoxMin.y()<<" mm, "<<fPhantomBoxMin.z()<<" mm"<<G4endl;
0132  G4cout<<"   Phantom box position (max) "<<fPhantomBoxMax.x()<<" mm, "<<fPhantomBoxMax.y()<<" mm, "<<fPhantomBoxMax.z()<<" mm"<<G4endl;
0133  G4cout<<"   Number of tetrahedrons     "<<fNOfTetrahedrons<<G4endl<<G4endl;
0134 }