Gabriele Cosmo
129 lines
4.1 KiB
C++
129 lines
4.1 KiB
C++
// This code implementation is the intellectual property of
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// the RD44 GEANT4 collaboration.
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//
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// By copying, distributing or modifying the Program (or any work
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// based on the Program) you indicate your acceptance of this statement,
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// and all its terms.
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//
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// $Id: ExN01DetectorConstruction.cc,v 1.1 1999/01/07 16:05:42 gunter Exp $
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// GEANT4 tag $Name: geant4-00-01 $
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//
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#include "ExN01DetectorConstruction.hh"
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#include "G4Material.hh"
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#include "G4Box.hh"
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#include "G4Tubs.hh"
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#include "G4LogicalVolume.hh"
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#include "G4ThreeVector.hh"
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#include "G4PVPlacement.hh"
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#include "globals.hh"
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ExN01DetectorConstruction::ExN01DetectorConstruction()
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{;}
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ExN01DetectorConstruction::~ExN01DetectorConstruction()
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{;}
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G4VPhysicalVolume* ExN01DetectorConstruction::Construct()
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{
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//------------------------------------------------------ materials
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G4double a; // atomic mass
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G4double z; // atomic number
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G4double density;
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G4String name;
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a = 39.95*g/mole;
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density = 1.782e-03*g/cm3;
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G4Material* Ar = new G4Material(name="ArgonGas", z=18., a, density);
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a = 26.98*g/mole;
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density = 2.7*g/cm3;
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G4Material* Al = new G4Material(name="Aluminum", z=13., a, density);
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a = 207.19*g/mole;
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density = 11.35*g/cm3;
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G4Material* Pb = new G4Material(name="Lead", z=82., a, density);
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//------------------------------------------------------ volumes
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//------------------------------ experimental hall (world volume)
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//------------------------------ beam line along x axis
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G4double expHall_x = 3.0*m;
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G4double expHall_y = 1.0*m;
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G4double expHall_z = 1.0*m;
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G4Box* experimentalHall_box
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= new G4Box("expHall_box",expHall_x,expHall_y,expHall_z);
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G4LogicalVolume* experimentalHall_log
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= new G4LogicalVolume(experimentalHall_box,Ar,"expHall_log",0,0,0);
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G4VPhysicalVolume* experimentalHall_phys
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= new G4PVPlacement(0,G4ThreeVector(),"expHall",
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experimentalHall_log,0,false,0);
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//------------------------------ a tracker tube
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G4double innerRadiusOfTheTube = 0.*cm;
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G4double outerRadiusOfTheTube = 60.*cm;
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G4double hightOfTheTube = 50.*cm;
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G4double startAngleOfTheTube = 0.*deg;
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G4double spanningAngleOfTheTube = 360.*deg;
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G4Tubs* tracker_tube
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= new G4Tubs("tracker_tube",innerRadiusOfTheTube,
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outerRadiusOfTheTube,hightOfTheTube,
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startAngleOfTheTube,spanningAngleOfTheTube);
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G4LogicalVolume* tracker_log
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= new G4LogicalVolume(tracker_tube,Al,"tracker_log",0,0,0);
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G4double trackerPos_x = -1.0*m;
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G4double trackerPos_y = 0.*m;
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G4double trackerPos_z = 0.*m;
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G4VPhysicalVolume* tracker_phys
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= new G4PVPlacement(0,
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G4ThreeVector(trackerPos_x,trackerPos_y,trackerPos_z),
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tracker_log,"tracker",experimentalHall_log,false,0);
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//------------------------------ a calorimeter block
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G4double block_x = 1.0*m;
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G4double block_y = 50.0*cm;
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G4double block_z = 50.0*cm;
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G4Box* calorimeterBlock_box
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= new G4Box("calBlock_box",block_x,block_y,block_z);
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G4LogicalVolume* calorimeterBlock_log
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= new G4LogicalVolume(calorimeterBlock_box,Pb,"caloBlock_log",0,0,0);
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G4double blockPos_x = 1.0*m;
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G4double blockPos_y = 0.0*m;
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G4double blockPos_z = 0.0*m;
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G4VPhysicalVolume* calorimeterBlock_phys
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= new G4PVPlacement(0,
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G4ThreeVector(blockPos_x,blockPos_y,blockPos_z),
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calorimeterBlock_log,"caloBlock",experimentalHall_log,false,0);
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//------------------------------ calorimeter layers
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G4double calo_x = 1.*cm;
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G4double calo_y = 40.*cm;
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G4double calo_z = 40.*cm;
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G4Box* calorimeterLayer_box
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= new G4Box("caloLayer_box",calo_x,calo_y,calo_z);
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G4LogicalVolume* calorimeterLayer_log
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= new G4LogicalVolume(calorimeterLayer_box,Al,"caloLayer_log",0,0,0);
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for(G4int i=0;i<19;i++) // loop for 19 layers
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{
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G4double caloPos_x = (i-9)*10.*cm;
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G4double caloPos_y = 0.0*m;
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G4double caloPos_z = 0.0*m;
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G4VPhysicalVolume* calorimeterLayer_phys
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= new G4PVPlacement(0,
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G4ThreeVector(caloPos_x,caloPos_y,caloPos_z),
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calorimeterLayer_log,"caloLayer",calorimeterBlock_log,false,i);
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}
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//------------------------------------------------------------------
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return experimentalHall_phys;
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}
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