Gabriele Cosmo
186 lines
6.4 KiB
C++
186 lines
6.4 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 F06DetectorConstruction.cc
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/// \brief Implementation of the F06DetectorConstruction class
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#include "F06DetectorConstruction.hh"
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#include "G4Box.hh"
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#include "G4Colour.hh"
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#include "G4FieldManager.hh"
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#include "G4GeometryManager.hh"
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#include "G4LogicalVolume.hh"
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#include "G4LogicalVolumeStore.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 "G4PhysicalVolumeStore.hh"
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#include "G4RepleteEofM.hh"
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#include "G4SolidStore.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4TransportationManager.hh"
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#include "G4UniformGravityField.hh"
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#include "G4UserLimits.hh"
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#include "G4VisAttributes.hh"
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// #include "G4EqGravityField.hh"
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#include "G4ChordFinder.hh"
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#include "G4ClassicalRK4.hh"
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#include "G4IntegrationDriver.hh"
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#include "G4MagIntegratorStepper.hh"
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#include "G4PropagatorInField.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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F06DetectorConstruction::F06DetectorConstruction() : fVacuum(nullptr)
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{
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// materials
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DefineMaterials();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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F06DetectorConstruction::~F06DetectorConstruction()
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{
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delete fField;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void F06DetectorConstruction::DefineMaterials()
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{
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G4NistManager* nistMan = G4NistManager::Instance();
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fVacuum = nistMan->FindOrBuildMaterial("G4_Galactic");
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G4cout << *(G4Material::GetMaterialTable()) << G4endl;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VPhysicalVolume* F06DetectorConstruction::Construct()
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{
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//
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// World
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//
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G4double expHall_x = 1.0 * m;
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G4double expHall_y = 1.0 * m;
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G4double expHall_z = 1.0 * m;
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auto solidWorld = new G4Box("World", // its name
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expHall_x, expHall_y, expHall_z); // its size
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auto logicWorld = new G4LogicalVolume(solidWorld, // its solid
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fVacuum, // its material
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"World"); // its name
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auto physiWorld = 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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G4double maxStep = 1.0 * mm;
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G4double maxTime = 41. * s;
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auto stepLimit = new G4UserLimits(maxStep, DBL_MAX, maxTime);
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logicWorld->SetUserLimits(stepLimit);
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//
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// Visualization attributes
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//
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// logicWorld->SetVisAttributes (G4VisAttributes::GetInvisible());
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//
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// always return the physical World
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//
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return physiWorld;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4ThreadLocal G4UniformGravityField* F06DetectorConstruction::fField = nullptr;
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void F06DetectorConstruction::ConstructSDandField()
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{
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using StepperType = G4ClassicalRK4;
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if (!fField) {
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fField = new G4UniformGravityField();
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auto equation = new G4RepleteEofM(fField);
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// G4EqGravityField* equation = new G4EqGravityField(fField);
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G4TransportationManager* transportMgr = G4TransportationManager::GetTransportationManager();
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G4FieldManager* fieldManager = transportMgr->GetFieldManager();
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fieldManager->SetDetectorField(fField);
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const int nVar = 8; // 12 for RepleteEofM
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auto stepper = new StepperType(equation, nVar);
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G4double minStep = 0.01 * mm;
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G4ChordFinder* chordFinder = nullptr;
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if (stepper) {
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auto intgrDriver =
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new G4IntegrationDriver<StepperType>(minStep, stepper, stepper->GetNumberOfVariables());
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if (intgrDriver) {
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chordFinder = new G4ChordFinder(intgrDriver);
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}
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}
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// OLD -- and wrong
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// new G4ChordFinder((G4MagneticField*)fField,minStep,stepper);
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// Set accuracy parameters
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G4double deltaChord = 3.0 * mm;
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chordFinder->SetDeltaChord(deltaChord);
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G4double deltaIntersection = 0.1 * mm;
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fieldManager->SetDeltaIntersection(deltaIntersection);
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// Control accuracy of integration
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//
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G4double deltaOneStep = 0.01 * mm;
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fieldManager->SetAccuraciesWithDeltaOneStep(deltaOneStep);
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//
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G4double epsMax = 1.0e-4; // Pure number -- maximum relative integration error
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G4double epsMin = 2.5e-7; //
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fieldManager->SetMinimumEpsilonStep(epsMin);
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fieldManager->SetMaximumEpsilonStep(epsMax);
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// The acceptable relative accuracy is calculated as deltaOneStep / stepsize
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// but bounded to the interval between these values!
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fieldManager->SetChordFinder(chordFinder);
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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