source: trunk/examples/extended/field/field03/src/F03DetectorConstruction.cc @ 1309

//
// ********************************************************************
// * 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: F03DetectorConstruction.cc,v 1.13 2009/11/05 01:10:06 gum Exp $
// GEANT4 tag $Name: geant4-09-03-cand-01 $
//
// 

#include "F03DetectorConstruction.hh"
#include "F03DetectorMessenger.hh"
#include "F03CalorimeterSD.hh"
#include "F03FieldSetup.hh"

#include "G4Material.hh"
#include "G4Tubs.hh"
#include "G4LogicalVolume.hh"
#include "G4PVPlacement.hh"
#include "G4UniformMagField.hh"
#include "G4FieldManager.hh"
#include "G4TransportationManager.hh"
#include "G4SDManager.hh"
#include "G4RunManager.hh"

#include "G4GeometryManager.hh"
#include "G4PhysicalVolumeStore.hh"
#include "G4LogicalVolumeStore.hh"
#include "G4SolidStore.hh"

#include "G4ios.hh"

/////////////////////////////////////////////////////////////////////////////
//
//

F03DetectorConstruction::F03DetectorConstruction()
 : solidWorld(0), logicWorld(0), physiWorld(0),
   solidAbsorber(0),logicAbsorber(0), physiAbsorber(0),
   magField(0), fEmFieldSetup(0), calorimeterSD(0),
   AbsorberMaterial(0), fRadiatorMat(0), worldchanged(false), WorldMaterial(0)
{
  // default parameter values of the calorimeter

  WorldSizeZ = 44000.*mm;
  WorldSizeR = 22000.*mm;

  AbsorberThickness = 1.0*mm;

  AbsorberRadius   = 20000.*mm;

  zAbsorber = 21990.0*mm ;

  fRadThickness = 100*mm ;
  fGasGap       = 100*mm  ;
  fFoilNumber   = 1 ;

  fDetGap       = 1.0*mm ;

  fStartR       = 40*cm  ;
  fStartZ       = 10.0*mm  ;

  // create commands for interactive definition of the calorimeter  

  detectorMessenger = new F03DetectorMessenger(this);
  
  DefineMaterials();

  fEmFieldSetup = new F03FieldSetup() ;
}

//////////////////////////////////////////////////////////////////////////
//
//

F03DetectorConstruction::~F03DetectorConstruction()
{ 
  delete detectorMessenger;
  if (fEmFieldSetup) delete fEmFieldSetup ;
}

//////////////////////////////////////////////////////////////////////////
//
//

G4VPhysicalVolume* F03DetectorConstruction::Construct()
{
  return ConstructCalorimeter();
}

//////////////////////////////////////////////////////////////////////////////
//
//

void F03DetectorConstruction::DefineMaterials()
{ 
  // This function illustrates the possible ways to define materials
 
  G4String name, symbol ;             // a=mass of a mole;
  G4double a, z, density ;            // z=mean number of protons;  
  G4int nel ;
  G4int ncomponents;
  G4double fractionmass, pressure, temperature;

  //
  // define Elements
  //

  a = 1.01*g/mole;
  G4Element* elH  = new G4Element(name="Hydrogen",symbol="H" , 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="N" , z= 7., a);

  a = 16.00*g/mole;
  G4Element* elO  = new G4Element(name="Oxygen"  ,symbol="O" , z= 8., a);

  a = 39.948*g/mole;
  G4Element* elAr = new G4Element(name="Argon", symbol="Ar", z=18., a);

  //
  // define simple materials
  //

  // Mylar

  density = 1.39*g/cm3;
  G4Material* Mylar = new G4Material(name="Mylar", density, nel=3);
  Mylar->AddElement(elO,2);
  Mylar->AddElement(elC,5);
  Mylar->AddElement(elH,4);

  // Polypropelene

  G4Material* CH2 = new G4Material ("Polypropelene" , 0.91*g/cm3, 2);
  CH2->AddElement(elH,2);
  CH2->AddElement(elC,1);

  // Krypton as detector gas, STP

  density = 3.700*mg/cm3 ;
  a = 83.80*g/mole ;
  G4Material* Kr  = new G4Material(name="Kr",z=36., a, density );

  // Dry air (average composition)

  density = 1.7836*mg/cm3 ;       // STP
  G4Material* Argon = new G4Material(name="Argon"  , density, ncomponents=1);
  Argon->AddElement(elAr, 1);

  density = 1.25053*mg/cm3 ;       // STP
  G4Material* Nitrogen = new G4Material(name="N2"  , density, ncomponents=1);
  Nitrogen->AddElement(elN, 2);

  density = 1.4289*mg/cm3 ;       // STP
  G4Material* Oxygen = new G4Material(name="O2"  , density, ncomponents=1);
  Oxygen->AddElement(elO, 2);

  density  = 1.2928*mg/cm3 ;       // STP
  density *= 1.0e-8 ;       // pumped vacuum
  temperature = STP_Temperature;
  pressure = 1.0e-8*STP_Pressure;

  G4Material* Air = new G4Material(name="Air"  , density, ncomponents=3,
                                   kStateGas,temperature,pressure);
  Air->AddMaterial( Nitrogen, fractionmass = 0.7557 ) ;
  Air->AddMaterial( Oxygen,   fractionmass = 0.2315 ) ;
  Air->AddMaterial( Argon,    fractionmass = 0.0128 ) ;

  // Xenon as detector gas, STP

  density = 5.858*mg/cm3 ;
  a = 131.29*g/mole ;
  G4Material* Xe  = new G4Material(name="Xenon",z=54., a, density );

  // Carbon dioxide, STP

  density = 1.842*mg/cm3;
  G4Material* CarbonDioxide = new G4Material(name="CO2", density, nel=2);
  CarbonDioxide->AddElement(elC,1);
  CarbonDioxide->AddElement(elO,2);

  // 80% Xe + 20% CO2, STP

  density = 5.0818*mg/cm3 ;      
  G4Material* Xe20CO2 = new G4Material(name="Xe20CO2"  , density, ncomponents=2);
  Xe20CO2->AddMaterial( Xe,              fractionmass = 0.922 ) ;
  Xe20CO2->AddMaterial( CarbonDioxide,   fractionmass = 0.078 ) ;

  // 80% Kr + 20% CO2, STP

  density = 3.601*mg/cm3 ;      
  G4Material* Kr20CO2 = new G4Material(name="Kr20CO2"  , density, 
                                                             ncomponents=2);
  Kr20CO2->AddMaterial( Kr,              fractionmass = 0.89 ) ;
  Kr20CO2->AddMaterial( CarbonDioxide,   fractionmass = 0.11 ) ;


  G4cout << *(G4Material::GetMaterialTable()) << G4endl;

  //default materials of the calorimeter and TR radiator

  fRadiatorMat =  Air ; // CH2 ;   // Mylar ; 
  
  AbsorberMaterial = Air ; //  Kr20CO2 ;   // XeCO2CF4  ; 

  WorldMaterial    = Air ;
}

/////////////////////////////////////////////////////////////////////////
//
//
  
G4VPhysicalVolume* F03DetectorConstruction::ConstructCalorimeter()
{
  G4int j ; 
  G4double zModule, zRadiator; 

  // complete the Calor parameters definition and Print 

  ComputeCalorParameters();
  PrintCalorParameters();
      
  // Cleanup old geometry

  if (physiWorld)
  {
    G4GeometryManager::GetInstance()->OpenGeometry();
    G4PhysicalVolumeStore::GetInstance()->Clean();
    G4LogicalVolumeStore::GetInstance()->Clean();
    G4SolidStore::GetInstance()->Clean();
  }

  solidWorld = new G4Tubs("World",                              // its name
                   0.,WorldSizeR,WorldSizeZ/2.,0.,twopi);       // its size
                         
  logicWorld = new G4LogicalVolume(solidWorld,          // its solid
                                   WorldMaterial,       // its material
                                   "World");            // its name
                                   
  physiWorld = new G4PVPlacement(0,                     // no rotation
                                 G4ThreeVector(),       // at (0,0,0)
                                 "World",               // its name
                                 logicWorld,            // its logical volume
                                 0,                     // its mother  volume
                                 false,                 // no boolean operation
                                 0);                    // copy number

  // TR radiator envelope

  G4double radThick = fFoilNumber*(fRadThickness + fGasGap) + fDetGap   ;

  G4double zRad = zAbsorber - 20*cm - 0.5*radThick ;
  G4cout<<"zRad = "<<zRad/mm<<" mm"<<G4endl ;

  radThick *= 1.02 ;
  G4cout<<"radThick = "<<radThick/mm<<" mm"<<G4endl ;
  G4cout<<"fFoilNumber = "<<fFoilNumber<<G4endl ;
  G4cout<<"fRadiatorMat = "<<fRadiatorMat->GetName()<<G4endl ;
  G4cout<<"WorldMaterial = "<<WorldMaterial->GetName()<<G4endl ;
 
  solidRadiator = new G4Tubs("Radiator",0.0, 
                                              1.01*AbsorberRadius, 
                                              0.5*radThick,0.0,twopi             ) ; 
                         
  logicRadiator = new G4LogicalVolume(solidRadiator,    
                                                       WorldMaterial,      
                                                       "Radiator");     

  // Set local field manager and local field in radiator and its daughters:

  G4bool allLocal = true ;
       
  logicRadiator->SetFieldManager( fEmFieldSetup->GetLocalFieldManager(), 
                                  allLocal ) ;

       
  physiRadiator = new G4PVPlacement(0,
                                     G4ThreeVector(0,0,zRad),           
                                     "Radiator", logicRadiator,         
                                     physiWorld, false, 0       );

  fSolidRadSlice = new G4Tubs("RadSlice",0.0,
                                AbsorberRadius,0.5*fRadThickness,0.0,twopi ) ;

  fLogicRadSlice = new G4LogicalVolume(fSolidRadSlice,fRadiatorMat,
                                          "RadSlice",0,0,0);

  zModule = zRad + 0.5*radThick/1.02 ;
  G4cout<<"zModule = "<<zModule/mm<<" mm"<<G4endl ;

    for(j=0;j<fFoilNumber;j++)
    {  

      zRadiator = zModule - j*(fRadThickness + fGasGap) ;
      G4cout<<zRadiator/mm<<" mm"<<"\t" ;
      //   G4cout<<"j = "<<j<<"\t" ;         
      
      fPhysicRadSlice = new G4PVPlacement(0,G4ThreeVector(0.,0.,zRadiator-zRad),
                                         "RadSlice",fLogicRadSlice,
                                          physiRadiator,false,j);
     }                                 
  G4cout<<G4endl ;
       
  // Absorber

  if (AbsorberThickness > 0.) 
  { 
      solidAbsorber = new G4Tubs("Absorber", 1.0*mm, 
                                  AbsorberRadius,
                                  AbsorberThickness/2., 
                                  0.0,twopi); 
                          
      logicAbsorber = new G4LogicalVolume(solidAbsorber,    
                                          AbsorberMaterial, 
                                          "Absorber");     
                                          
      physiAbsorber = new G4PVPlacement(0,                 
                          G4ThreeVector(0.,0.,zAbsorber),        
                                        "Absorber",        
                                        logicAbsorber,     
                                        physiWorld,       
                                        false,             
                                        0);
  }
                                 
  // Sensitive Detectors: Absorber 
  
  G4SDManager* SDman = G4SDManager::GetSDMpointer();

  if(!calorimeterSD)
  {
    calorimeterSD = new F03CalorimeterSD("CalorSD",this);
    SDman->AddNewDetector( calorimeterSD );
  }
  if (logicAbsorber)  logicAbsorber->SetSensitiveDetector(calorimeterSD);

  return physiWorld;
}

////////////////////////////////////////////////////////////////////////////
//
//

void F03DetectorConstruction::PrintCalorParameters()
{
  G4cout << "\n The  WORLD   is made of " 
       << WorldSizeZ/mm << "mm of " << WorldMaterial->GetName() ;
  G4cout << ", the transverse size (R) of the world is " << WorldSizeR/mm << " mm. " << G4endl;
  G4cout << " The ABSORBER is made of " 
       << AbsorberThickness/mm << "mm of " << AbsorberMaterial->GetName() ;
  G4cout << ", the transverse size (R) is " << AbsorberRadius/mm << " mm. " << G4endl;
  G4cout << " Z position of the (middle of the) absorber " << zAbsorber/mm << "  mm." << G4endl;
  G4cout << G4endl;
}

///////////////////////////////////////////////////////////////////////////
//
//

void F03DetectorConstruction::SetAbsorberMaterial(G4String materialChoice)
{
  // get the pointer to the material table
  const G4MaterialTable* theMaterialTable = G4Material::GetMaterialTable();

  // search the material by its name   
  G4Material* pttoMaterial;
  for (size_t J=0 ; J<theMaterialTable->size() ; J++)
   {
     pttoMaterial = (*theMaterialTable)[J];     
     if(pttoMaterial->GetName() == materialChoice)
        {
          AbsorberMaterial = pttoMaterial;
          logicAbsorber->SetMaterial(pttoMaterial); 
        }             
   }
}

////////////////////////////////////////////////////////////////////////////
//
//

void F03DetectorConstruction::SetWorldMaterial(G4String materialChoice)
{
  // get the pointer to the material table
  const G4MaterialTable* theMaterialTable = G4Material::GetMaterialTable();

  // search the material by its name   
  G4Material* pttoMaterial;
  for (size_t J=0 ; J<theMaterialTable->size() ; J++)
   {
     pttoMaterial = (*theMaterialTable)[J];     
     if(pttoMaterial->GetName() == materialChoice)
        {
          WorldMaterial = pttoMaterial;
          logicWorld->SetMaterial(pttoMaterial); 
        }             
   }
}

///////////////////////////////////////////////////////////////////////////
//
//

void F03DetectorConstruction::SetAbsorberThickness(G4double val)
{
  // change Absorber thickness and recompute the calorimeter parameters
  AbsorberThickness = val;
  ComputeCalorParameters();
}  

/////////////////////////////////////////////////////////////////////////////
//
//

void F03DetectorConstruction::SetAbsorberRadius(G4double val)
{
  // change the transverse size and recompute the calorimeter parameters
  AbsorberRadius = val;
  ComputeCalorParameters();
}  

////////////////////////////////////////////////////////////////////////////
//
//

void F03DetectorConstruction::SetWorldSizeZ(G4double val)
{
  worldchanged=true;
  WorldSizeZ = val;
  ComputeCalorParameters();
}  

///////////////////////////////////////////////////////////////////////////
//
//

void F03DetectorConstruction::SetWorldSizeR(G4double val)
{
  worldchanged=true;
  WorldSizeR = val;
  ComputeCalorParameters();
}  

//////////////////////////////////////////////////////////////////////////////
//
//

void F03DetectorConstruction::SetAbsorberZpos(G4double val)
{
  zAbsorber  = val;
  ComputeCalorParameters();
}  


///////////////////////////////////////////////////////////////////////////////
//
//
  
void F03DetectorConstruction::UpdateGeometry()
{
  G4RunManager::GetRunManager()->DefineWorldVolume(ConstructCalorimeter());
}

//
//
////////////////////////////////////////////////////////////////////////////