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db49709b532cdbe4a21775b0b28ce7fdf435e735
geant4/examples/extended/eventgenerator/HepMC/MCTruth/src/DetectorConstruction.cc
T
Gabriele Cosmo db49709b53 Import Geant4 10.5.0 source tree
2018-12-07 15:15:39 +01:00

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//
// ********************************************************************
// * License and Disclaimer *
// * *
// * The Geant4 software is copyright of the Copyright Holders of *
// * the Geant4 Collaboration. It is provided under the terms and *
// * conditions of the Geant4 Software License, included in the file *
// * LICENSE and available at http://cern.ch/geant4/license . These *
// * include a list of copyright holders. *
// * *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work make any representation or warranty, express or implied, *
// * regarding this software system or assume any liability for its *
// * use. Please see the license in the file LICENSE and URL above *
// * for the full disclaimer and the limitation of liability. *
// * *
// * This code implementation is the result of the scientific and *
// * technical work of the GEANT4 collaboration. *
// * By using, copying, modifying or distributing the software (or *
// * any work based on the software) you agree to acknowledge its *
// * use in resulting scientific publications, and indicate your *
// * acceptance of all terms of the Geant4 Software license. *
// ********************************************************************
//
/// \file eventgenerator/HepMC/MCTruth/src/DetectorConstruction.cc
/// \brief Implementation of the DetectorConstruction class
//
//
//
//
// --------------------------------------------------------------
// GEANT 4 - DetectorConstruction class
// --------------------------------------------------------------
//
// Author: Witold POKORSKI (Witold.Pokorski@cern.ch)
//
// --------------------------------------------------------------
//
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
#include "DetectorConstruction.hh"
#include "G4Material.hh"
#include "G4NistManager.hh"
#include "G4Box.hh"
#include "G4LogicalVolume.hh"
#include "G4ThreeVector.hh"
#include "G4PVPlacement.hh"
#include "globals.hh"
#include "G4PhysicalConstants.hh"
#include "G4SystemOfUnits.hh"
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
DetectorConstruction::DetectorConstruction() :
G4VUserDetectorConstruction(),
fAbsorberMaterial(0) {}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
DetectorConstruction::~DetectorConstruction() {}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
G4VPhysicalVolume* DetectorConstruction::Construct()
{
//------------------- materials ------------------------
//--- simple materials
G4NistManager* nistManager = G4NistManager::Instance();
// Iron has a X0 = 1.7585 cm and lambda_I = 16.760 cm.
G4Material* iron = nistManager->FindOrBuildMaterial("G4_Fe");
// Copper has a X0 = 1.4353 cm and lambda_I = 15.056 cm.
G4Material* copper = nistManager->FindOrBuildMaterial("G4_Cu");
// Tungsten has a X0 = 0.35 cm and lambda_I = 9.5855 cm.
G4Material* tungsten = nistManager->FindOrBuildMaterial("G4_W");
// Lead has a X0 = 0.56120 cm and lambda_I = 17.092 cm.
G4Material* lead = nistManager->FindOrBuildMaterial("G4_Pb");
// Uranium has a X0 = 0.31662 cm and lambda_I = 10.501 cm.
G4Material* uranium = nistManager->FindOrBuildMaterial("G4_U");
// Liquid Argon has a X0 = 10.971 cm and lambda_I = 65.769 cm.
G4double a, z, density;
density = 1.4*g/cm3;
a = 39.95*g/mole;
G4Material* liquidArgon = new G4Material("LiquidArgon", z=18., a, density);
//--- mixtures
G4Material* air = nistManager->FindOrBuildMaterial("G4_AIR");
// 4-May-2006 : We rename "Vacuum" as "G4vacuum" to avoid
// problems with Flugg.
G4double pressure, temperature, fractionMass;
G4int nel;
density = 1.e-5*g/cm3;
pressure = 2.e-2*bar;
temperature = STP_Temperature; // From PhysicalConstants.h .
G4Material* vacuum = new G4Material("G4vacuum", density, nel=1,
kStateGas, temperature, pressure);
vacuum->AddMaterial(air, fractionMass=1.);
// Plastic scintillator tiles (used both in CMS hadron calorimeter
// and ATLAS hadron barrel calorimeter):
// X0 = 42.4 cm and lambda_I = 79.360 cm.
G4int natoms;
G4Element* elH = nistManager->FindOrBuildElement("H");
G4Element* elC = nistManager->FindOrBuildElement("C");
density = 1.032*g/cm3;
G4Material* polystyrene = new G4Material("Polystyrene", density, nel=2);
polystyrene->AddElement(elC, natoms=19);
polystyrene->AddElement(elH, natoms=21);
// PbWO4 CMS crystals. It has a X0 = 0.89 cm and lambda_I = 22.4 cm.
G4Element* elPb = nistManager->FindOrBuildElement("Pb");
G4Element* elW = nistManager->FindOrBuildElement("W");
G4Element* elO = nistManager->FindOrBuildElement("O");
density = 8.28*g/cm3;
G4Material* pbWO4 = new G4Material("PbWO4", density, nel=3);
pbWO4->AddElement(elPb, natoms=1);
pbWO4->AddElement(elW, natoms=1);
pbWO4->AddElement(elO, natoms=4);
//------------------- volumes --------------------------
// --- experimental hall (world volume)
// beam line along z axis
//***LOOKHERE***
const G4double sizeExpHall = 4.0*m; // For normal calorimeter
//const G4double sizeExpHall = 10.0*m; // For Scintillator calorimeter
G4double expHall_x = sizeExpHall / 2.0; // half dimension along x
G4double expHall_y = sizeExpHall / 2.0; // half dimension along y
G4double expHall_z = sizeExpHall / 2.0; // half dimension along z
G4Box* experimentalHall_box
= new G4Box("expHall_box",expHall_x,expHall_y,expHall_z);
G4LogicalVolume* experimentalHallLog
= new G4LogicalVolume(experimentalHall_box, // solid
vacuum, // material
"expHall_log", // name
0, // field manager
0, // sensitive detector
0); // user limits
G4VPhysicalVolume* experimentalHallPhys
= new G4PVPlacement(0, // rotation
G4ThreeVector(), // translation
"expHall", // name
experimentalHallLog, // logical volume
0, // mother physical volume
false, // boolean operation
0); // copy number
// --- Detector
//***LOOKHERE***
const G4double sizeCalo = 2.0*m; // For normal calorimeter
//const G4double sizeCalo = 8.0*m; // For Scintillator calorimeter
G4double xAbsorber = sizeCalo / 2.0; // half dimension along x
G4double yAbsorber = sizeCalo / 2.0; // half dimension along y
G4double zAbsorber = sizeCalo / 2.0; // half dimension along z
G4Box* solidAbsorber = new G4Box("solidAbsorber", xAbsorber, yAbsorber, zAbsorber);
G4LogicalVolume* logicAbsorber
= new G4LogicalVolume(solidAbsorber, // solid
fAbsorberMaterial, // material
"logicAbsorber", // name
0, // field manager
0, // sensitive detector
0); // user limits
new G4PVPlacement(0, // rotation
G4ThreeVector(), // translation
"physiAbsorber", // its name
logicAbsorber, // logical volume
experimentalHallPhys, // mother physical volume
false, // boolean operation
100); // copy number
// --- Check if all materials were built
if ( (! iron) || (! copper) || (! tungsten) || (! lead) || (! uranium) ||
(! pbWO4) || (! polystyrene) || (! liquidArgon) ) {
G4cerr << "Failure in building materials." << G4endl;
}
// --- Set default values ***LOOKHERE***
fAbsorberMaterial = iron;
//fAbsorberMaterial = copper;
//fAbsorberMaterial = tungsten;
//fAbsorberMaterial = lead;
//fAbsorberMaterial = uranium;
//fAbsorberMaterial = pbWO4;
//fAbsorberMaterial = polystyrene;
//fAbsorberMaterial = liquidArgon;
logicAbsorber->SetMaterial( fAbsorberMaterial );
PrintParameters();
return experimentalHallPhys;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
void DetectorConstruction::PrintParameters()
{
G4cout << G4endl << G4endl
<< " ------ DetectorConstruction::PrintParameters() ------ " << G4endl
<< " Absorber Material = ";
if ( fAbsorberMaterial ) {
G4cout << fAbsorberMaterial->GetName();
} else {
G4cout << " UNDEFINED ";
}
G4cout << G4endl << " -------------------------------------------------------- "
<< G4endl << G4endl;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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