Import Geant4 10.0.0 source tree
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Gabriele Cosmo
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//
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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 parallel/ParN02/src/ExN02DetectorConstruction.cc
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/// \brief Implementation of the ExN02DetectorConstruction class
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//
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//
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// $Id: ExN02DetectorConstruction.cc 78055 2013-12-03 08:27:48Z gcosmo $
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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 "ExN02DetectorConstruction.hh"
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#include "ExN02DetectorMessenger.hh"
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#include "ExN02ChamberParameterisation.hh"
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#include "ExN02MagneticField.hh"
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#include "ExN02TrackerSD.hh"
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#include "G4Material.hh"
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#include "G4Box.hh"
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#include "G4LogicalVolume.hh"
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#include "G4PVPlacement.hh"
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#include "G4PVParameterised.hh"
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#include "G4SDManager.hh"
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#include "G4GeometryTolerance.hh"
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#include "G4GeometryManager.hh"
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#include "G4UserLimits.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4VisAttributes.hh"
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#include "G4Colour.hh"
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#include "G4ios.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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ExN02DetectorConstruction::ExN02DetectorConstruction()
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:solidWorld(0), logicWorld(0), physiWorld(0),
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solidTarget(0), logicTarget(0), physiTarget(0),
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solidTracker(0),logicTracker(0),physiTracker(0),
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solidChamber(0),logicChamber(0),physiChamber(0),
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TargetMater(0), ChamberMater(0),chamberParam(0),
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stepLimit(0), fpMagField(0),
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fWorldLength(0.), fTargetLength(0.), fTrackerLength(0.),
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NbOfChambers(0) , ChamberWidth(0.), ChamberSpacing(0.)
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{
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fpMagField = new ExN02MagneticField();
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detectorMessenger = new ExN02DetectorMessenger(this);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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ExN02DetectorConstruction::~ExN02DetectorConstruction()
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{
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delete fpMagField;
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delete stepLimit;
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delete chamberParam;
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delete detectorMessenger;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VPhysicalVolume* ExN02DetectorConstruction::Construct()
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{
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//--------- Material definition ---------
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G4double a, z;
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G4double density, temperature, pressure;
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G4int nel;
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//Air
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G4Element* N = new G4Element("Nitrogen", "N", z=7., a= 14.01*g/mole);
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G4Element* O = new G4Element("Oxygen" , "O", z=8., a= 16.00*g/mole);
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G4Material* Air = new G4Material("Air", density= 1.29*mg/cm3, nel=2);
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Air->AddElement(N, 70*perCent);
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Air->AddElement(O, 30*perCent);
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//Lead
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G4Material* Pb =
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new G4Material("Lead", z=82., a= 207.19*g/mole, density= 11.35*g/cm3);
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//Xenon gas
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G4Material* Xenon =
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new G4Material("XenonGas", z=54., a=131.29*g/mole, density= 5.458*mg/cm3,
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kStateGas, temperature= 293.15*kelvin, pressure= 1*atmosphere);
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// Print all the materials defined.
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//
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G4cout << G4endl << "The materials defined are : " << G4endl << G4endl;
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G4cout << *(G4Material::GetMaterialTable()) << G4endl;
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//--------- Sizes of the principal geometrical components (solids) ---------
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NbOfChambers = 5;
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ChamberWidth = 20*cm;
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ChamberSpacing = 80*cm;
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fTrackerLength = (NbOfChambers+1)*ChamberSpacing; // Full length of Tracker
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fTargetLength = 5.0 * cm; // Full length of Target
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TargetMater = Pb;
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ChamberMater = Xenon;
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fWorldLength= 1.2 *(fTargetLength+fTrackerLength);
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G4double targetSize = 0.5*fTargetLength; // Half length of the Target
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G4double trackerSize = 0.5*fTrackerLength; // Half length of the Tracker
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//--------- Definitions of Solids, Logical Volumes, Physical Volumes ---------
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//------------------------------
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// World
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//------------------------------
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G4double HalfWorldLength = 0.5*fWorldLength;
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G4GeometryManager::GetInstance()->SetWorldMaximumExtent(fWorldLength);
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G4cout << "Computed tolerance = "
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<< G4GeometryTolerance::GetInstance()->GetSurfaceTolerance()/mm
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<< " mm" << G4endl;
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solidWorld= new G4Box("world",HalfWorldLength,HalfWorldLength,HalfWorldLength);
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logicWorld= new G4LogicalVolume( solidWorld, Air, "World", 0, 0, 0);
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// Must place the World Physical volume unrotated at (0,0,0).
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//
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physiWorld = new G4PVPlacement(0, // 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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0, // its mother volume
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false, // no boolean operations
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0); // copy number
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//------------------------------
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// Target
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//------------------------------
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G4ThreeVector positionTarget = G4ThreeVector(0,0,-(targetSize+trackerSize));
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solidTarget = new G4Box("target",targetSize,targetSize,targetSize);
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logicTarget = new G4LogicalVolume(solidTarget,TargetMater,"Target",0,0,0);
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physiTarget = new G4PVPlacement(0, // no rotation
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positionTarget, // at (x,y,z)
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logicTarget, // its logical volume
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"Target", // its name
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logicWorld, // its mother volume
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false, // no boolean operations
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0); // copy number
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G4cout << "Target is " << fTargetLength/cm << " cm of "
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<< TargetMater->GetName() << G4endl;
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//------------------------------
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// Tracker
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//------------------------------
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G4ThreeVector positionTracker = G4ThreeVector(0,0,0);
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solidTracker = new G4Box("tracker",trackerSize,trackerSize,trackerSize);
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logicTracker = new G4LogicalVolume(solidTracker , Air, "Tracker",0,0,0);
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physiTracker = new G4PVPlacement(0, // no rotation
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positionTracker, // at (x,y,z)
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logicTracker, // its logical volume
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"Tracker", // its name
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logicWorld, // its mother volume
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false, // no boolean operations
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0); // copy number
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//------------------------------
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// Tracker segments
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//------------------------------
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//
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// An example of Parameterised volumes
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// dummy values for G4Box -- modified by parameterised volume
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solidChamber = new G4Box("chamber", 100*cm, 100*cm, 10*cm);
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logicChamber = new G4LogicalVolume(solidChamber,ChamberMater,"Chamber",0,0,0);
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G4double firstPosition = -trackerSize + 0.5*ChamberWidth;
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G4double firstLength = fTrackerLength/10;
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G4double lastLength = fTrackerLength;
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chamberParam = new ExN02ChamberParameterisation(
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NbOfChambers, // NoChambers
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firstPosition, // Z of center of first
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ChamberSpacing, // Z spacing of centers
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ChamberWidth, // Width Chamber
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firstLength, // lengthInitial
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lastLength); // lengthFinal
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// dummy value : kZAxis -- modified by parameterised volume
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//
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physiChamber = new G4PVParameterised(
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"Chamber", // their name
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logicChamber, // their logical volume
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logicTracker, // Mother logical volume
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kZAxis, // Are placed along this axis
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NbOfChambers, // Number of chambers
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chamberParam); // The parametrisation
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G4cout << "There are " << NbOfChambers << " chambers in the tracker region. "
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<< "The chambers are " << ChamberWidth/mm << " mm of "
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<< ChamberMater->GetName() << "\n The distance between chamber is "
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<< ChamberSpacing/cm << " cm" << G4endl;
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//------------------------------------------------
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// Sensitive detectors
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//------------------------------------------------
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G4SDManager* SDman = G4SDManager::GetSDMpointer();
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G4String trackerChamberSDname = "ExN02/TrackerChamberSD";
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ExN02TrackerSD* aTrackerSD = new ExN02TrackerSD( trackerChamberSDname );
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SDman->AddNewDetector( aTrackerSD );
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logicChamber->SetSensitiveDetector( aTrackerSD );
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//--------- Visualization attributes -------------------------------
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G4VisAttributes* BoxVisAtt= new G4VisAttributes(G4Colour(1.0,1.0,1.0));
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logicWorld ->SetVisAttributes(BoxVisAtt);
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logicTarget ->SetVisAttributes(BoxVisAtt);
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logicTracker->SetVisAttributes(BoxVisAtt);
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G4VisAttributes* ChamberVisAtt = new G4VisAttributes(G4Colour(1.0,1.0,0.0));
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logicChamber->SetVisAttributes(ChamberVisAtt);
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//--------- example of User Limits -------------------------------
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// below is an example of how to set tracking constraints in a given
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// logical volume(see also in N02PhysicsList how to setup the processes
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// G4StepLimiter or G4UserSpecialCuts).
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// Sets a max Step length in the tracker region, with G4StepLimiter
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//
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G4double maxStep = 0.5*ChamberWidth;
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stepLimit = new G4UserLimits(maxStep);
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logicTracker->SetUserLimits(stepLimit);
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// Set additional contraints on the track, with G4UserSpecialCuts
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//
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// G4double maxLength = 2*fTrackerLength, maxTime = 0.1*ns, minEkin = 10*MeV;
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// logicTracker->SetUserLimits(new G4UserLimits(maxStep,maxLength,maxTime,
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// minEkin));
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return physiWorld;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void ExN02DetectorConstruction::setTargetMaterial(G4String materialName)
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{
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// search the material by its name
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G4Material* pttoMaterial = G4Material::GetMaterial(materialName);
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if (pttoMaterial)
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{TargetMater = pttoMaterial;
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logicTarget->SetMaterial(pttoMaterial);
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G4cout << "\n----> The target is " << fTargetLength/cm << " cm of "
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<< materialName << G4endl;
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void ExN02DetectorConstruction::setChamberMaterial(G4String materialName)
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{
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// search the material by its name
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G4Material* pttoMaterial = G4Material::GetMaterial(materialName);
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if (pttoMaterial)
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{ChamberMater = pttoMaterial;
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logicChamber->SetMaterial(pttoMaterial);
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G4cout << "\n----> The chambers are " << ChamberWidth/cm << " cm of "
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<< materialName << G4endl;
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void ExN02DetectorConstruction::SetMagField(G4double fieldValue)
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{
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fpMagField->SetMagFieldValue(fieldValue);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void ExN02DetectorConstruction::SetMaxStep(G4double maxStep)
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{
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if ((stepLimit)&&(maxStep>0.)) stepLimit->SetMaxAllowedStep(maxStep);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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