// // ******************************************************************** // * 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: MyExDetectorConstruction.cc,v 1.1 2006/11/28 15:19:42 tnikitin Exp $ // GEANT4 tag $Name: geant4-09-04-ref-00 $ // #include "ExN01DetectorConstruction.hh" #include "G4Material.hh" #include "G4Box.hh" #include "G4Tubs.hh" #include "G4LogicalVolume.hh" #include "G4ThreeVector.hh" #include "G4PVPlacement.hh" #include "G4UnitsTable.hh" #include "globals.hh" ExN01DetectorConstruction::ExN01DetectorConstruction() : experimentalHall_log(0), tracker_log(0), calorimeterBlock_log(0), calorimeterLayer_log(0), experimentalHall_phys(0), calorimeterLayer_phys(0), calorimeterBlock_phys(0), tracker_phys(0) {;} ExN01DetectorConstruction::~ExN01DetectorConstruction() { } G4VPhysicalVolume* ExN01DetectorConstruction::Construct() { //------------------------------------------------------ materials G4double a; // atomic mass G4double z; // atomic number G4double density; G4double pressure; G4double temperature; G4int ncomponents, natoms; G4double abundance, fractionmass; G4Material* Ar = new G4Material("ArgonGas", z= 18., a= 39.95*g/mole, density= 1.782*mg/cm3); G4Material* Al = new G4Material("Aluminum", z= 13., a= 26.98*g/mole, density= 2.7*g/cm3); G4Material* Pb = new G4Material("Lead", z= 82., a= 207.19*g/mole, density= 11.35*g/cm3); // // What about vacuum ? Vacuum is an ordinary gas with very low density // density = universe_mean_density; //from PhysicalConstants.h pressure = 1.e-19*pascal; temperature = 0.1*kelvin; G4Material* Galactic=new G4Material("Galactic", z=1., a=1.01*g/mole, density, kStateGas,temperature,pressure); // // define a material from elements. case 2: mixture by fractional mass // //This function illustrates the possible ways to define materials G4String symbol; ////define Elements G4Element* N = new G4Element("Nitrogen",symbol="N" , z= 7., a= 14.01*g/mole); G4Element* O = new G4Element("Oxygen" ,symbol="O" , z= 8., a= 16.00*g/mole); G4Material* Air = new G4Material("Air" , density= 1.290*mg/cm3, ncomponents=2); Air->AddElement(N, fractionmass=0.7); Air->AddElement(O, fractionmass=0.3); //------------------------------------------------------ volumes //------------------------------ experimental hall (world volume) //------------------------------ beam line along x axis G4double expHall_x = 200.0*cm; G4double expHall_y = 200.0*cm; G4double expHall_z = 200.0*cm; G4Box* experimentalHall_box = new G4Box("expHall_box",expHall_x,expHall_y,expHall_z); experimentalHall_log = new G4LogicalVolume(experimentalHall_box, Galactic,"expHall_log",0,0,0); experimentalHall_phys = new G4PVPlacement(0,G4ThreeVector(), experimentalHall_log,"expHall",0,false,0); //------------------------------ a tracker tube G4double innerRadiusOfTheTube = 0.*cm; G4double outerRadiusOfTheTube = 70.*cm; G4double hightOfTheTube = 70.*cm; G4double startAngleOfTheTube = 0.*deg; G4double spanningAngleOfTheTube = 360.*deg; G4Tubs* tracker_tube = new G4Tubs("tracker_tube",innerRadiusOfTheTube, outerRadiusOfTheTube,hightOfTheTube, startAngleOfTheTube,spanningAngleOfTheTube); tracker_log = new G4LogicalVolume(tracker_tube,Ar,"tracker_log",0,0,0); G4double trackerPos_x = -0.0*cm; G4double trackerPos_y = 0.*cm; G4double trackerPos_z = 0.*cm; tracker_phys = new G4PVPlacement(0, G4ThreeVector(trackerPos_x,trackerPos_y,trackerPos_z), tracker_log,"tracker",experimentalHall_log,false,0); //------------------------------ a calorimeter block // G4double block_x = 1.0*m; //G4double block_y = 50.0*cm; //G4double block_z = 50.0*cm; //G4Box* calorimeterBlock_box = new G4Box("calBlock_box",block_x, // block_y,block_z); //calorimeterBlock_log = new G4LogicalVolume(calorimeterBlock_box, // Pb,"caloBlock_log",0,0,0); //G4double blockPos_x = 1.0*m; //G4double blockPos_y = 0.0*m; //G4double blockPos_z = 0.0*m; //calorimeterBlock_phys = new G4PVPlacement(0, // G4ThreeVector(blockPos_x,blockPos_y,blockPos_z), // calorimeterBlock_log,"caloBlock",experimentalHall_log,false,0); //------------------------------ calorimeter layers //G4double calo_x = 1.*cm; //G4double calo_y = 40.*cm; //G4double calo_z = 40.*cm; //G4Box* calorimeterLayer_box = new G4Box("caloLayer_box", // calo_x,calo_y,calo_z); //calorimeterLayer_log = new G4LogicalVolume(calorimeterLayer_box, // Al,"caloLayer_log",0,0,0); //for(G4int i=0;i<19;i++) // loop for 19 layers //{ // G4double caloPos_x = (i-9)*10.*cm; // G4double caloPos_y = 0.0*m; // G4double caloPos_z = 0.0*m; // calorimeterLayer_phys = new G4PVPlacement(0, // G4ThreeVector(caloPos_x,caloPos_y,caloPos_z), // calorimeterLayer_log,"caloLayer",calorimeterBlock_log,false,i); //} //------------------------------------------------------------------ return experimentalHall_phys; }