Gabriele Cosmo
380 lines
12 KiB
C++
380 lines
12 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 src/DetectorConstruction.cc
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/// \brief Implementation of the DetectorConstruction class
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//
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//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#include "DetectorConstruction.hh"
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#include "DetectorMessenger.hh"
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#include "G4Box.hh"
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#include "G4LogicalVolume.hh"
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#include "G4Material.hh"
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#include "G4NistManager.hh"
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#include "G4PVPlacement.hh"
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#include "G4PVReplica.hh"
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#include "G4ProductionCutsTable.hh"
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#include "G4Region.hh"
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#include "G4PhysicalConstants.hh"
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#include "G4RunManager.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4UnitsTable.hh"
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#include <iomanip>
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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DetectorConstruction::DetectorConstruction()
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: fWorldMaterial(nullptr)
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, fLogicWorld(nullptr)
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, fPhysiWorld(nullptr)
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, fLogicLayerFront(nullptr)
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, fLogicLayerBack(nullptr)
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{
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for(G4int i = 0; i < kMaxAbsor; ++i)
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{
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fAbsorMaterial[i] = nullptr;
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fAbsorThickness[i] = 0.0;
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fLogicAbsorFront[i] = nullptr;
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fLogicAbsorBack[i] = nullptr;
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}
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// default parameter values of the calorimeter
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fNbOfAbsor = 2;
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fAbsorThickness[1] = 2.3 * mm;
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fAbsorThickness[2] = 5.7 * mm;
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fNbOfLayers = 50;
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fCalorSizeYZ = 40. * cm;
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ComputeCalorParameters();
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// materials
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SetWorldMaterial("G4_Galactic");
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SetAbsorMaterial(1, "G4_Pb");
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SetAbsorMaterial(2, "G4_lAr");
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// create commands for interactive definition of the calorimeter
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fDetectorMessenger.reset(new DetectorMessenger(this));
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::ComputeCalorParameters()
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{
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// Compute derived parameters of the calorimeter
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fLayerThickness = 0.;
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for(G4int iAbs = 1; iAbs <= fNbOfAbsor; iAbs++)
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{
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fLayerThickness += fAbsorThickness[iAbs];
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}
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fCalorThickness = fNbOfLayers * fLayerThickness;
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fWorldSizeX = 1.2 * fCalorThickness;
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fWorldSizeYZ = 1.2 * fCalorSizeYZ;
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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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if(fPhysiWorld)
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{
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return fPhysiWorld;
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}
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// complete the Calor parameters definition
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ComputeCalorParameters();
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//
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// World
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//
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auto* solidWorld = new G4Box("World", // its name
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fWorldSizeX / 2, fWorldSizeYZ / 2,
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fWorldSizeYZ / 2); // its size
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fLogicWorld = new G4LogicalVolume(solidWorld, // its solid
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fWorldMaterial, // its material
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"World"); // its name
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fPhysiWorld = new G4PVPlacement(0, // no rotation
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G4ThreeVector(), // at (0,0,0)
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fLogicWorld, // its fLogical volume
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"World", // its name
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0, // its mother volume
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false, // no boolean operation
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0); // copy number
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//
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// Calorimeter
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//
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auto* solidCalor = new G4Box("Calorimeter", fCalorThickness / 2,
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fCalorSizeYZ / 2, fCalorSizeYZ / 2);
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auto* logicCalor =
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new G4LogicalVolume(solidCalor, fWorldMaterial, "Calorimeter");
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new G4PVPlacement(0, // no rotation
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G4ThreeVector(), // at (0,0,0)
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logicCalor, // its fLogical volume
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"Calorimeter", // its name
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fLogicWorld, // its mother volume
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false, // no boolean operation
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0); // copy number
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//
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// Layers
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//
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auto* solidLayer =
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new G4Box("Layer", fLayerThickness / 2, fCalorSizeYZ / 2, fCalorSizeYZ / 2);
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fLogicLayerFront =
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new G4LogicalVolume(solidLayer, fWorldMaterial, "Layer-front");
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fLogicLayerBack =
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new G4LogicalVolume(solidLayer, fWorldMaterial, "Layer-back");
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G4double xfront = -0.5 * fCalorThickness;
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for(G4int l = 0; l < fNbOfLayers; ++l)
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{
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G4double xcenter = xfront + 0.5 * fLayerThickness;
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xfront += fLayerThickness;
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G4LogicalVolume* logicLayer = fLogicLayerFront;
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if(xcenter > 0)
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{
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logicLayer = fLogicLayerBack;
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}
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new G4PVPlacement(0, G4ThreeVector(xcenter, 0, 0), logicLayer, "Layer",
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logicCalor, false, l);
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}
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//
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// Regions
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//
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auto* regionFront = new G4Region("Front");
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regionFront->SetProductionCuts(G4ProductionCutsTable::GetProductionCutsTable()
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->GetDefaultProductionCuts());
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regionFront->AddRootLogicalVolume(fLogicLayerFront);
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auto* regionBack = new G4Region("Back");
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regionBack->SetProductionCuts(G4ProductionCutsTable::GetProductionCutsTable()
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->GetDefaultProductionCuts());
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regionBack->AddRootLogicalVolume(fLogicLayerBack);
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//
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// Absorbers
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//
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xfront = -0.5 * fLayerThickness;
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for(G4int k = 1; k <= fNbOfAbsor; ++k)
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{
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auto* solidAbsor =
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new G4Box("Absorber", // its name
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fAbsorThickness[k] / 2, fCalorSizeYZ / 2, fCalorSizeYZ / 2);
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fLogicAbsorFront[k] =
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new G4LogicalVolume(solidAbsor, // its solid
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fAbsorMaterial[k], // its material
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fAbsorMaterial[k]->GetName());
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fLogicAbsorBack[k] = new G4LogicalVolume(solidAbsor, // its solid
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fAbsorMaterial[k], // its material
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fAbsorMaterial[k]->GetName());
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G4double xcenter = xfront + 0.5 * fAbsorThickness[k];
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xfront += fAbsorThickness[k];
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new G4PVPlacement(0, G4ThreeVector(xcenter, 0., 0.), fLogicAbsorFront[k],
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fAbsorMaterial[k]->GetName(), fLogicLayerFront, false,
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k); // copy number
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new G4PVPlacement(0, G4ThreeVector(xcenter, 0., 0.), fLogicAbsorBack[k],
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fAbsorMaterial[k]->GetName(), fLogicLayerBack, false,
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k); // copy number
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}
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PrintCalorParameters();
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// always return the fPhysical World
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//
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return fPhysiWorld;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::PrintCalorParameters()
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{
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G4cout << "\n-------------------------------------------------------------"
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<< "\n ---> The calorimeter is " << fNbOfLayers << " layers of:";
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for(G4int i = 1; i <= fNbOfAbsor; ++i)
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{
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G4cout << "\n \t" << std::setw(12) << fAbsorMaterial[i]->GetName() << ": "
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<< std::setw(6) << G4BestUnit(fAbsorThickness[i], "Length");
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}
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G4cout << "\n-------------------------------------------------------------\n";
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G4cout << "\n" << fWorldMaterial << G4endl;
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for(G4int j = 1; j <= fNbOfAbsor; ++j)
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{
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G4cout << "\n" << fAbsorMaterial[j] << G4endl;
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}
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G4cout << "\n-------------------------------------------------------------\n";
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::SetWorldMaterial(const G4String& material)
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{
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// search the material by its name
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G4Material* pttoMaterial =
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G4NistManager::Instance()->FindOrBuildMaterial(material);
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if(pttoMaterial)
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{
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fWorldMaterial = pttoMaterial;
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if(fLogicWorld)
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{
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fLogicWorld->SetMaterial(fWorldMaterial);
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fLogicLayerFront->SetMaterial(fWorldMaterial);
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fLogicLayerBack->SetMaterial(fWorldMaterial);
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G4RunManager::GetRunManager()->PhysicsHasBeenModified();
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}
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::SetNbOfLayers(G4int ival)
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{
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// set the number of Layers
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//
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if(ival < 2)
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{
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G4cout << "\n --->warning from SetfNbOfLayers: " << ival
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<< " must be at least 2. Command refused" << G4endl;
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return;
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}
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fNbOfLayers = ival;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::SetNbOfAbsor(G4int ival)
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{
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// set the number of Absorbers
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//
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if(ival < 1 || ival > (kMaxAbsor - 1))
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{
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G4cout << "\n ---> warning from SetfNbOfAbsor: " << ival
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<< " must be at least 1 and and most " << kMaxAbsor - 1
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<< ". Command refused" << G4endl;
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return;
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}
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fNbOfAbsor = ival;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::SetAbsorMaterial(G4int ival,
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const G4String& material)
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{
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// search the material by its name
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//
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if(ival > fNbOfAbsor || ival <= 0)
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{
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G4cout << "\n --->warning from SetAbsorMaterial: absor number " << ival
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<< " out of range. Command refused" << G4endl;
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return;
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}
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G4Material* pttoMaterial =
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G4NistManager::Instance()->FindOrBuildMaterial(material);
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if(pttoMaterial)
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{
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fAbsorMaterial[ival] = pttoMaterial;
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if(fLogicAbsorFront[ival])
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{
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fLogicAbsorFront[ival]->SetMaterial(pttoMaterial);
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fLogicAbsorBack[ival]->SetMaterial(pttoMaterial);
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G4RunManager::GetRunManager()->PhysicsHasBeenModified();
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}
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::SetAbsorThickness(G4int ival, G4double val)
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{
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// change Absorber thickness
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//
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if(ival > fNbOfAbsor || ival <= 0)
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{
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G4cout << "\n --->warning from SetAbsorThickness: absor number " << ival
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<< " out of range. Command refused" << G4endl;
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return;
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}
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if(val <= DBL_MIN)
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{
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G4cout << "\n --->warning from SetAbsorThickness: thickness " << val
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<< " out of range. Command refused" << G4endl;
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return;
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}
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fAbsorThickness[ival] = val;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::SetCalorSizeYZ(G4double val)
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{
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// change the transverse size
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//
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if(val <= DBL_MIN)
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{
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G4cout << "\n --->warning from SetfCalorSizeYZ: thickness " << val
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<< " out of range. Command refused" << G4endl;
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return;
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}
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fCalorSizeYZ = val;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#include "G4AutoDelete.hh"
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#include "G4GlobalMagFieldMessenger.hh"
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void DetectorConstruction::ConstructSDandField()
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{
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if(fFieldMessenger.Get() == nullptr)
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{
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// Create global magnetic field messenger.
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// Uniform magnetic field is then created automatically if
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// the field value is not zero.
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G4ThreeVector fieldValue = G4ThreeVector();
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G4GlobalMagFieldMessenger* msg = new G4GlobalMagFieldMessenger(fieldValue);
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// msg->SetVerboseLevel(1);
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G4AutoDelete::Register(msg);
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fFieldMessenger.Put(msg);
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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