Gabriele Cosmo
404 lines
15 KiB
C++
404 lines
15 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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//
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/// \file medical/electronScattering2/src/ElectronBenchmarkDetector.cc
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/// \brief Implementation of the ElectronBenchmarkDetector class
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#include "ElectronBenchmarkDetector.hh"
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#include "ElectronBenchmarkDetectorMessenger.hh"
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#include "G4Colour.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 "G4MultiFunctionalDetector.hh"
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#include "G4NistManager.hh"
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#include "G4PSCellFlux.hh"
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#include "G4PSPopulation.hh"
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#include "G4PVPlacement.hh"
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#include "G4PVReplica.hh"
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#include "G4PhysicalVolumeStore.hh"
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#include "G4RunManager.hh"
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#include "G4SDManager.hh"
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#include "G4SDParticleFilter.hh"
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#include "G4SolidStore.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4Tubs.hh"
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#include "G4UImanager.hh"
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#include "G4VPrimitiveScorer.hh"
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#include "G4VisAttributes.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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ElectronBenchmarkDetector::ElectronBenchmarkDetector() : G4VUserDetectorConstruction()
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{
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// Exit Window
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fPosWindow0 = 0.000000 * cm;
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fPosWindow1 = 0.004120 * cm;
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// Scattering Foil
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fPosPrimFoil = 2.650000 * cm;
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fHalfThicknessPrimFoil = 0.0 * cm;
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// Monitor Chamber
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fPosMon0 = 5.000000 * cm;
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fPosMon1 = 5.011270 * cm;
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// Helium Bag
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fPosBag0 = 6.497500 * cm;
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fPosHelium0 = 6.500000 * cm;
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fPosHelium1 = 116.500000 * cm;
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fPosBag1 = 116.502500 * cm;
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fThicknessRing = 1.4 * cm;
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// Scoring Plane
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fPosScorer = 118.200000 * cm;
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fThicknessScorer = 0.001 * cm;
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fWidthScorerRing = 0.1 * cm;
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// Radii
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fRadOverall = 23.3 * cm;
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fRadRingInner = 20.0 * cm;
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// Extra space remaining in world volume around apparatus
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fPosDelta = 1. * cm;
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fRadDelta = 0.1 * cm;
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fMessenger = new ElectronBenchmarkDetectorMessenger(this);
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DefineMaterials();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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ElectronBenchmarkDetector::~ElectronBenchmarkDetector()
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{
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delete fMessenger;
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delete fWorldVisAtt;
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delete fWindowVisAtt;
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delete fPrimFoilVisAtt;
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delete fMonVisAtt;
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delete fBagVisAtt;
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delete fHeliumVisAtt;
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delete fRingVisAtt;
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delete fScorerVisAtt;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VPhysicalVolume* ElectronBenchmarkDetector::Construct()
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{
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return CreateGeometry();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void ElectronBenchmarkDetector::DefineMaterials()
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{
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// Use NIST database for elements and materials whereever possible.
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G4NistManager* man = G4NistManager::Instance();
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man->SetVerbose(1);
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// Take all elements and materials from NIST
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man->FindOrBuildMaterial("G4_He");
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man->FindOrBuildMaterial("G4_Be");
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man->FindOrBuildMaterial("G4_Al");
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man->FindOrBuildMaterial("G4_Ti");
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man->FindOrBuildMaterial("G4_Ta");
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man->FindOrBuildMaterial("G4_AIR");
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man->FindOrBuildMaterial("G4_MYLAR");
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G4Element* C = man->FindOrBuildElement("C");
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G4Element* Cu = man->FindOrBuildElement("Cu");
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G4Element* Au = man->FindOrBuildElement("Au");
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G4Element* Ti = man->FindOrBuildElement("Ti");
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G4Element* Al = man->FindOrBuildElement("Al");
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G4Element* V = man->FindOrBuildElement("V");
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// Define materials not in NIST.
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// While the NIST database does contain default materials for C, Cu and Au,
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// those defaults have different densities than the ones used in the
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// benchmark specification.
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G4double density;
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G4int ncomponents;
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G4double fractionmass;
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G4Material* G4_C = new G4Material("G4_C", density = 2.18 * g / cm3, ncomponents = 1);
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G4_C->AddElement(C, fractionmass = 1.00);
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G4Material* G4_Cu = new G4Material("G4_Cu", density = 8.92 * g / cm3, ncomponents = 1);
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G4_Cu->AddElement(Cu, fractionmass = 1.00);
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G4Material* G4_Au = new G4Material("G4_Au", density = 19.30 * g / cm3, ncomponents = 1);
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G4_Au->AddElement(Au, fractionmass = 1.00);
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G4Material* TiAlloy = new G4Material("TiAlloy", density = 4.42 * g / cm3, ncomponents = 3);
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TiAlloy->AddElement(Ti, fractionmass = 0.90);
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TiAlloy->AddElement(Al, fractionmass = 0.06);
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TiAlloy->AddElement(V, fractionmass = 0.04);
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// Print materials table
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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* ElectronBenchmarkDetector::CreateGeometry()
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{
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if (fPhysiWorld) return fPhysiWorld;
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// Instantiate the world
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fPhysiWorld = CreateWorld();
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fLogWorld = fPhysiWorld->GetLogicalVolume();
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// Instantiate the geometry
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CreateExitWindow(fLogWorld);
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CreatePrimaryFoil(fLogWorld);
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CreateMonitor(fLogWorld);
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CreateHeliumBag(fLogWorld);
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// Create the scorers
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CreateScorer(fLogWorld);
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return fPhysiWorld;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VPhysicalVolume* ElectronBenchmarkDetector::CreateWorld()
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{
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G4double halfLengthWorld = fPosScorer / 2. + fPosDelta;
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G4double radWorld = fRadOverall + fRadDelta;
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G4VSolid* worldSolid =
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new G4Tubs("WorldSolid", 0. * cm, radWorld, halfLengthWorld, 0. * deg, 360. * deg);
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G4LogicalVolume* worldLog =
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new G4LogicalVolume(worldSolid, G4Material::GetMaterial("G4_AIR"), "WorldLog");
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fWorldVisAtt = new G4VisAttributes(G4Colour(1.0, 1.0, 1.0));
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worldLog->SetVisAttributes(fWorldVisAtt);
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G4VPhysicalVolume* worldPhys =
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new G4PVPlacement(0, G4ThreeVector(0., 0., 0.), worldLog, "World", 0, false, 0);
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return worldPhys;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void ElectronBenchmarkDetector::CreateExitWindow(G4LogicalVolume* worldLog)
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{
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G4double halfLengthWorld = fPosScorer / 2.;
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G4double halfThicknessWindow = fPosWindow1 / 2.;
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G4VSolid* windowSolid =
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new G4Tubs("windowSolid", 0. * cm, fRadOverall, halfThicknessWindow, 0. * deg, 360. * deg);
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G4LogicalVolume* windowLog =
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new G4LogicalVolume(windowSolid, G4Material::GetMaterial("TiAlloy"), "windowLog");
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fWindowVisAtt = new G4VisAttributes(G4Colour(0.5, 1.0, 0.5));
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windowLog->SetVisAttributes(fWindowVisAtt);
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new G4PVPlacement(0, G4ThreeVector(0., 0., halfThicknessWindow - halfLengthWorld), windowLog,
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"ExitWindow", worldLog, false, 0);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void ElectronBenchmarkDetector::CreatePrimaryFoil(G4LogicalVolume* worldLog)
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{
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G4double halfLengthWorld = fPosScorer / 2.;
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// For some energies, we have no Primary Foil.
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if (fHalfThicknessPrimFoil == 0.) return;
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fSolidPrimFoil =
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new G4Tubs("PrimFoilSolid", 0. * cm, fRadOverall, fHalfThicknessPrimFoil, 0. * deg, 360. * deg);
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fLogPrimFoil = new G4LogicalVolume(fSolidPrimFoil, fMaterialPrimFoil, "PrimFoilLog");
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fPrimFoilVisAtt = new G4VisAttributes(G4Colour(0.5, 1.0, 0.5));
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fLogPrimFoil->SetVisAttributes(fPrimFoilVisAtt);
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new G4PVPlacement(0,
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G4ThreeVector(0., 0., fPosPrimFoil + fHalfThicknessPrimFoil - halfLengthWorld),
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fLogPrimFoil, "ScatteringFoil", worldLog, false, 0);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void ElectronBenchmarkDetector::CreateMonitor(G4LogicalVolume* worldLog)
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{
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G4double halfLengthWorld = fPosScorer / 2.;
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G4double halfThicknessMon = (fPosMon1 - fPosMon0) / 2.;
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G4VSolid* monSolid =
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new G4Tubs("monSolid", 0. * cm, fRadOverall, halfThicknessMon, 0. * deg, 360. * deg);
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G4LogicalVolume* monLog =
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new G4LogicalVolume(monSolid, G4Material::GetMaterial("G4_MYLAR"), "monLog");
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fMonVisAtt = new G4VisAttributes(G4Colour(0.5, 1.0, 0.5));
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monLog->SetVisAttributes(fMonVisAtt);
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new G4PVPlacement(0, G4ThreeVector(0., 0., fPosMon0 + halfThicknessMon - halfLengthWorld), monLog,
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"MonitorChamber", worldLog, false, 0);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void ElectronBenchmarkDetector::CreateHeliumBag(G4LogicalVolume* worldLog)
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{
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G4double halfLengthWorld = fPosScorer / 2.;
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// Construct cylinder of Mylar
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G4double halfThicknessBag = (fPosBag1 - fPosBag0) / 2.;
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G4VSolid* bagSolid =
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new G4Tubs("bagSolid", 0. * cm, fRadOverall, halfThicknessBag, 0. * deg, 360. * deg);
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G4LogicalVolume* bagLog =
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new G4LogicalVolume(bagSolid, G4Material::GetMaterial("G4_MYLAR"), "bagLog");
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fBagVisAtt = new G4VisAttributes(G4Colour(0.5, 1.0, 0.5));
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bagLog->SetVisAttributes(fBagVisAtt);
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new G4PVPlacement(0, G4ThreeVector(0., 0., fPosBag0 + halfThicknessBag - halfLengthWorld), bagLog,
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"HeliumBag", worldLog, false, 0);
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// Insert cylinder of Helium into the Cylinder of Mylar
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G4double halfThicknessHelium = (fPosHelium1 - fPosHelium0) / 2.;
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G4VSolid* heliumSolid =
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new G4Tubs("heliumSolid", 0. * cm, fRadOverall, halfThicknessHelium, 0. * deg, 360. * deg);
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G4LogicalVolume* heliumLog =
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new G4LogicalVolume(heliumSolid, G4Material::GetMaterial("G4_He"), "heliumLog");
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fHeliumVisAtt = new G4VisAttributes(G4Colour(0.5, 1.0, 0.5));
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heliumLog->SetVisAttributes(fHeliumVisAtt);
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new G4PVPlacement(0, G4ThreeVector(0., 0., 0.), heliumLog, "Helium", bagLog, false, 0);
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// Insert two rings of Aluminum into the Cylinder of Helium
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G4double halfThicknessRing = fThicknessRing / 2.;
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G4VSolid* ringSolid =
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new G4Tubs("ringSolid", fRadRingInner, fRadOverall, halfThicknessRing, 0. * deg, 360. * deg);
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G4LogicalVolume* ring0Log =
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new G4LogicalVolume(ringSolid, G4Material::GetMaterial("G4_Al"), "ring0Log");
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G4LogicalVolume* ring1Log =
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new G4LogicalVolume(ringSolid, G4Material::GetMaterial("G4_Al"), "ring1Log");
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fRingVisAtt = new G4VisAttributes(G4Colour(0.5, 1.0, 0.5));
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ring0Log->SetVisAttributes(fRingVisAtt);
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ring1Log->SetVisAttributes(fRingVisAtt);
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new G4PVPlacement(0, G4ThreeVector(0., 0., -halfThicknessHelium + halfThicknessRing), ring0Log,
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"Ring0", heliumLog, false, 0);
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new G4PVPlacement(0, G4ThreeVector(0., 0., halfThicknessHelium - halfThicknessRing), ring1Log,
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"Ring1", heliumLog, false, 0);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void ElectronBenchmarkDetector::CreateScorer(G4LogicalVolume* worldLog)
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{
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G4double halfLengthWorld = fPosScorer / 2.;
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G4double halfThicknessScorer = fThicknessScorer / 2.;
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G4VSolid* scorerSolid =
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new G4Tubs("scorerSolid", 0. * cm, fRadOverall, halfThicknessScorer, 0. * deg, 360. * deg);
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G4LogicalVolume* scorerLog =
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new G4LogicalVolume(scorerSolid, G4Material::GetMaterial("G4_AIR"), "scorerLog");
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fScorerVisAtt = new G4VisAttributes(G4Colour(0.5, 1.0, 0.5));
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scorerLog->SetVisAttributes(fScorerVisAtt);
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new G4PVPlacement(0, G4ThreeVector(0., 0., halfLengthWorld - halfThicknessScorer), scorerLog,
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"Scorer", worldLog, false, 0);
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G4VSolid* scorerRingSolid =
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new G4Tubs("scorerRingSolid", 0. * cm, fRadOverall, halfThicknessScorer, 0. * deg, 360. * deg);
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fScorerRingLog =
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new G4LogicalVolume(scorerRingSolid, G4Material::GetMaterial("G4_AIR"), "scorerRingLog");
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new G4PVReplica("ScorerRing", fScorerRingLog, scorerLog, kRho,
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G4int(fRadOverall / fWidthScorerRing), fWidthScorerRing);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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// Note that this method is called both at start of job and again after
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// any command causes a change to detector geometry
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void ElectronBenchmarkDetector::ConstructSDandField()
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{
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G4SDManager::GetSDMpointer()->SetVerboseLevel(1);
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// G4Cache mechanism is necessary for multi-threaded operation
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// as it allows us to store separate detector pointer per thread
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G4MultiFunctionalDetector*& sensitiveDetector = fSensitiveDetectorCache.Get();
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if (!sensitiveDetector) {
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sensitiveDetector = new G4MultiFunctionalDetector("MyDetector");
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G4VPrimitiveScorer* primitive;
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G4SDParticleFilter* electronFilter = new G4SDParticleFilter("electronFilter", "e-");
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primitive = new G4PSCellFlux("cell flux");
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sensitiveDetector->RegisterPrimitive(primitive);
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primitive = new G4PSCellFlux("e cell flux");
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primitive->SetFilter(electronFilter);
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sensitiveDetector->RegisterPrimitive(primitive);
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primitive = new G4PSPopulation("population");
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sensitiveDetector->RegisterPrimitive(primitive);
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primitive = new G4PSPopulation("e population");
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primitive->SetFilter(electronFilter);
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sensitiveDetector->RegisterPrimitive(primitive);
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}
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G4SDManager::GetSDMpointer()->AddNewDetector(sensitiveDetector);
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fScorerRingLog->SetSensitiveDetector(sensitiveDetector);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void ElectronBenchmarkDetector::SetPrimFoilMaterial(const G4String& matname)
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{
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G4Material* material = G4NistManager::Instance()->FindOrBuildMaterial(matname);
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if (material && material != fMaterialPrimFoil) {
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fMaterialPrimFoil = material;
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if (fLogPrimFoil) {
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fLogPrimFoil->SetMaterial(fMaterialPrimFoil);
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}
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G4RunManager::GetRunManager()->PhysicsHasBeenModified();
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void ElectronBenchmarkDetector::SetPrimFoilThickness(G4double thicknessPrimFoil)
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{
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fHalfThicknessPrimFoil = thicknessPrimFoil / 2.;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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