// // ******************************************************************** // * 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. * // ******************************************************************** // // // $Id: DetectorConstruction.cc,v 1.1 2006/11/22 14:51:29 gcosmo Exp $ // GEANT4 tag $Name: geant4-09-04-beta-01 $ // // // -------------------------------------------------------------- // GEANT 4 - DetectorConstruction class // -------------------------------------------------------------- // // Author: Witold POKORSKI (Witold.Pokorski@cern.ch) // // -------------------------------------------------------------- #include "DetectorConstruction.hh" #include "G4Material.hh" #include "G4Box.hh" #include "G4LogicalVolume.hh" #include "G4ThreeVector.hh" #include "G4PVPlacement.hh" #include "globals.hh" DetectorConstruction::DetectorConstruction() : Iron(0), Copper(0), Tungsten(0), Lead(0), Uranium(0), PbWO4(0), Polystyrene(0), LiquidArgon(0), theAbsorberMaterial(0), logicAbsorber(0), physiAbsorber(0) {} DetectorConstruction::~DetectorConstruction() {} G4VPhysicalVolume* DetectorConstruction::Construct() { //------------------- materials ------------------------ G4double a; // atomic mass G4double z; // atomic number G4double density, pressure, temperature, fractionmass; G4String name, symbol; G4int nel, natoms; //--- elements a = 1.01*g/mole; G4Element* elH = new G4Element(name="Hydrogen", symbol="H2", z=1., a); a = 12.01*g/mole; G4Element* elC = new G4Element(name="Carbon", symbol="C", z=6., a); a = 14.01*g/mole; G4Element* elN = new G4Element(name="Nitrogen", symbol="N2", z=7., a); a = 16.00*g/mole; G4Element* elO = new G4Element(name="Oxygen", symbol="O2", z=8., a); a = 183.85*g/mole; G4Element* elW = new G4Element(name="Tungsten", symbol="W", z=74., a); a = 207.19*g/mole; G4Element* elPb = new G4Element(name="Lead", symbol="Pb", z=82., a); //--- simple materials // Iron has a X0 = 1.7585 cm and lambda_I = 16.760 cm. density = 7.87*g/cm3; a = 55.85*g/mole; Iron = new G4Material(name="Iron", z=26., a, density); // Copper has a X0 = 1.4353 cm and lambda_I = 15.056 cm. density = 8.96*g/cm3; a = 63.55*g/mole; Copper = new G4Material(name="Copper", z=29., a, density); // Tungsten has a X0 = 0.35 cm and lambda_I = 9.5855 cm. density = 19.30*g/cm3; a = 183.85*g/mole; Tungsten = new G4Material(name="Tungsten", z=74., a, density); // Lead has a X0 = 0.56120 cm and lambda_I = 17.092 cm. density = 11.35*g/cm3; a = 207.19*g/mole; Lead = new G4Material(name="Lead", z=82., a, density); // Uranium has a X0 = 0.31662 cm and lambda_I = 10.501 cm. density = 18.95*g/cm3; a = 238.03*g/mole; Uranium = new G4Material(name="Uranium", z=92., a, density); // Liquid Argon has a X0 = 10.971 cm and lambda_I = 65.769 cm. density = 1.4*g/cm3; a = 39.95*g/mole; LiquidArgon = new G4Material(name="LiquidArgon", z=18., a, density); //--- mixtures density = 1.290*mg/cm3; G4Material* Air = new G4Material(name="Air", density, nel=2); Air->AddElement(elN, 0.7); Air->AddElement(elO, 0.3); // 4-May-2006 : We rename "Vacuum" as "G4vacuum" to avoid // problems with Flugg. density = 1.e-5*g/cm3; pressure = 2.e-2*bar; temperature = STP_Temperature; // From PhysicalConstants.h . G4Material* G4vacuum = new G4Material(name="G4vacuum", density, nel=1, kStateGas, temperature, pressure); G4vacuum->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. density = 1.032*g/cm3; Polystyrene = new G4Material(name="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. density = 8.28*g/cm3; PbWO4 = new G4Material(name="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); experimentalHall_log = new G4LogicalVolume(experimentalHall_box, // solid G4vacuum, // material "expHall_log", // name 0, // field manager 0, // sensitive detector 0); // user limits experimentalHall_phys = new G4PVPlacement(0, // rotation G4ThreeVector(), // translation "expHall", // name experimentalHall_log, // 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); logicAbsorber = new G4LogicalVolume(solidAbsorber, // solid theAbsorberMaterial, // material "logicAbsorber", // name 0, // field manager 0, // sensitive detector 0); // user limits physiAbsorber = new G4PVPlacement(0, // rotation G4ThreeVector(), // translation "physiAbsorber", // its name logicAbsorber, // logical volume experimentalHall_phys, // mother physical volume false, // boolean operation 100); // copy number // --- Set default values ***LOOKHERE*** theAbsorberMaterial = Iron; //theAbsorberMaterial = Copper; //theAbsorberMaterial = Tungsten; //theAbsorberMaterial = Lead; //theAbsorberMaterial = Uranium; //theAbsorberMaterial = PbWO4; //theAbsorberMaterial = Polystyrene; //theAbsorberMaterial = LiquidArgon; logicAbsorber->SetMaterial( theAbsorberMaterial ); PrintParameters(); return experimentalHall_phys; } void DetectorConstruction::PrintParameters() { G4cout << G4endl << G4endl << " ------ DetectorConstruction::PrintParameters() ------ " << G4endl << " Absorber Material = "; if ( theAbsorberMaterial ) { G4cout << theAbsorberMaterial->GetName(); } else { G4cout << " UNDEFINED "; } G4cout << G4endl << " -------------------------------------------------------- " << G4endl << G4endl; }