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// $Id: ExN07DetectorConstruction.cc,v 1.8 2007/05/04 01:49:28 asaim Exp $
// GEANT4 tag $Name: geant4-09-03-cand-01 $
//
// 

#include "ExN07DetectorConstruction.hh"

#include "G4RunManager.hh"

#include "G4Material.hh"
#include "G4Box.hh"
#include "G4LogicalVolume.hh"
#include "G4PVPlacement.hh"
#include "G4PVReplica.hh"

#include "G4VisAttributes.hh"
#include "G4Colour.hh"

#include "G4SDManager.hh"
#include "G4MultiFunctionalDetector.hh"
#include "G4VPrimitiveScorer.hh"
#include "G4PSEnergyDeposit.hh"
#include "G4PSNofSecondary.hh"
#include "G4PSTrackLength.hh"
#include "G4PSNofStep.hh"
#include "G4PSMinKinEAtGeneration.hh"
#include "G4VSDFilter.hh"
#include "G4SDParticleFilter.hh"
#include "G4ios.hh"

#include "ExN07DetectorMessenger.hh"
#include "ExN07PrimaryGeneratorAction.hh"
#include "ExN07ParallelWorld.hh"

ExN07DetectorConstruction::ExN07DetectorConstruction()
:constructed(false),worldMaterial(0),absorberMaterial(0),gapMaterial(0),
 layerSolid(0),gapSolid(0),worldLogical(0),worldPhysical(0),serial(false),
 verboseLevel(1)
{
  numberOfLayers = 40;
  totalThickness = 2.0*m;
  layerThickness = totalThickness / numberOfLayers;

  for(size_t i=0;i<3;i++)
  {
    calorLogical[i] = 0;
    layerLogical[i] = 0;
    gapLogical[i] = 0;
    calorPhysical[i] = 0;
    layerPhysical[i] = 0;
    gapPhysical[i] = 0;
  }

  calName[0] = "Calor-A";
  calName[1] = "Calor-B";
  calName[2] = "Calor-C";

  detectorMessenger = new ExN07DetectorMessenger(this);
}

ExN07DetectorConstruction::~ExN07DetectorConstruction()
{ delete detectorMessenger;}

G4VPhysicalVolume* ExN07DetectorConstruction::Construct()
{
  if(!constructed)
  { 
    constructed = true;
    DefineMaterials();
    SetupGeometry();
    SetupDetectors();
  }
  if (GetVerboseLevel()>0) {
    PrintCalorParameters();
  }
  return worldPhysical;
}

void ExN07DetectorConstruction::DefineMaterials()
{ 
  G4String name, symbol;             //a=mass of a mole;
  G4double a, z, density;            //z=mean number of protons;  
  G4int iz;                          //iz=number of protons  in an isotope; 
  G4int n;                           // n=number of nucleons in an isotope;

  G4int ncomponents, natoms;
  G4double abundance, fractionmass;
  G4double temperature, pressure;

  //
  // define Elements
  //

  a = 1.01*g/mole;
  G4Element* H  = new G4Element(name="Hydrogen",symbol="H" , z= 1., a);

  a = 12.01*g/mole;
  G4Element* C  = new G4Element(name="Carbon"  ,symbol="C" , z= 6., a);

  a = 14.01*g/mole;
  G4Element* N  = new G4Element(name="Nitrogen",symbol="N" , z= 7., a);

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

  //
  // define an Element from isotopes, by relative abundance 
  //

  G4Isotope* U5 = new G4Isotope(name="U235", iz=92, n=235, a=235.01*g/mole);
  G4Isotope* U8 = new G4Isotope(name="U238", iz=92, n=238, a=238.03*g/mole);

  G4Element* U  = new G4Element(name="enriched Uranium",symbol="U",ncomponents=2);
  U->AddIsotope(U5, abundance= 90.*perCent);
  U->AddIsotope(U8, abundance= 10.*perCent);

  //
  // define simple materials
  //

  new G4Material(name="Aluminium", z=13., a=26.98*g/mole, density=2.700*g/cm3);
  new G4Material(name="Silicon", z=14., a= 28.09*g/mole, density= 2.33*g/cm3);
  new G4Material(name="Iron", z=26., a=55.85*g/mole, density=7.87*g/cm3);
  new G4Material(name="ArgonGas",z=18., a= 39.95*g/mole, density=1.782*mg/cm3);
  new G4Material(name="He", z=2., a=4.0*g/mole, density=0.1786e-03*g/cm3);

  density = 1.390*g/cm3;
  a = 39.95*g/mole;
  G4Material* lAr = new G4Material(name="liquidArgon", z=18., a, density);

  density = 11.35*g/cm3;
  a = 207.19*g/mole;
  G4Material* Pb = new G4Material(name="Lead"     , z=82., a, density);

  //
  // define a material from elements.   case 1: chemical molecule
  //
 
  density = 1.000*g/cm3;
  G4Material* H2O = new G4Material(name="Water", density, ncomponents=2);
  H2O->AddElement(H, natoms=2);
  H2O->AddElement(O, natoms=1);

  density = 1.032*g/cm3;
  G4Material* Sci = new G4Material(name="Scintillator", density, ncomponents=2);
  Sci->AddElement(C, natoms=9);
  Sci->AddElement(H, natoms=10);

  //
  // define a material from elements.   case 2: mixture by fractional mass
  //

  density = 1.290*mg/cm3;
  G4Material* Air = new G4Material(name="Air"  , density, ncomponents=2);
  Air->AddElement(N, fractionmass=0.7);
  Air->AddElement(O, fractionmass=0.3);

  //
  // examples of vacuum
  //

  density     = universe_mean_density;
  pressure    = 3.e-18*pascal;
  temperature = 2.73*kelvin;
  G4Material* Vacuum = new G4Material(name="Galactic", z=1., a=1.01*g/mole,
                                    density,kStateGas,temperature,pressure);

  if (GetVerboseLevel()>1) {
    G4cout << *(G4Material::GetMaterialTable()) << G4endl;
  }

  //default materials of the calorimeter
  worldMaterial    = Vacuum;
  absorberMaterial = Pb;
  gapMaterial      = lAr;
}

void ExN07DetectorConstruction::SetupGeometry()
{
  //     
  // World
  //
  G4VSolid* worldSolid = new G4Box("World",2.*m,2.*m,totalThickness*2.);
  worldLogical = new G4LogicalVolume(worldSolid,worldMaterial,"World");
  worldPhysical = new G4PVPlacement(0,G4ThreeVector(),worldLogical,"World",
                        0,false,0);
  
  //                               
  // Calorimeter
  //  
  G4VSolid* calorSolid = new G4Box("Calor",0.5*m,0.5*m,totalThickness/2.);
  G4int i;
  for(i=0;i<3;i++)
  {
    calorLogical[i] = new G4LogicalVolume(calorSolid,absorberMaterial,calName[i]);
    if(serial)
    {
      calorPhysical[i] = new G4PVPlacement(0,
                 G4ThreeVector(0.,0.,G4double(i-1)*totalThickness),
                 calorLogical[i],calName[i],worldLogical,false,i);
    }
    else
    {
      calorPhysical[i] = new G4PVPlacement(0,
                 G4ThreeVector(0.,G4double(i-1)*m,0.),
                 calorLogical[i],calName[i],worldLogical,false,i);
    }
  }
 
  //                                 
  // Layers --- as absorbers
  //
  layerSolid = new G4Box("Layer",0.5*m,0.5*m,layerThickness/2.);
  for(i=0;i<3;i++)
  {
    layerLogical[i] = new G4LogicalVolume(layerSolid,absorberMaterial,calName[i]+"_LayerLog");
    layerPhysical[i] = new G4PVReplica(calName[i]+"_Layer",layerLogical[i],calorLogical[i],kZAxis,
                          numberOfLayers,layerThickness);
  }
   
  //
  // Gap
  //
  gapSolid = new G4Box("Gap",0.5*m,0.5*m,layerThickness/4.);
  for(i=0;i<3;i++)
  {
    gapLogical[i] = new G4LogicalVolume(gapSolid,gapMaterial,"Gap");
    gapPhysical[i] = new G4PVPlacement(0,G4ThreeVector(0.,0.,layerThickness/4.),
                gapLogical[i],calName[i]+"_gap",layerLogical[i],false,0);
  }

  //
  // Regions
  //
  for(i=0;i<3;i++)
  {
    G4Region* aRegion = new G4Region(calName[i]);
    calorLogical[i]->SetRegion(aRegion);
    aRegion->AddRootLogicalVolume(calorLogical[i]);
  }

  //                                        
  // Visualization attributes
  //
  worldLogical->SetVisAttributes(G4VisAttributes::Invisible);
  G4VisAttributes* simpleBoxVisAtt= new G4VisAttributes(G4Colour(1.0,1.0,1.0));
  simpleBoxVisAtt->SetVisibility(true);
  for(i=0;i<3;i++)
  { 
    calorLogical[i]->SetVisAttributes(simpleBoxVisAtt);
    layerLogical[i]->SetVisAttributes(simpleBoxVisAtt);
    gapLogical[i]->SetVisAttributes(simpleBoxVisAtt);
  }
  
}

void ExN07DetectorConstruction::SetupDetectors()
{
  G4SDManager::GetSDMpointer()->SetVerboseLevel(1);
  G4String filterName, particleName;

  G4SDParticleFilter* gammaFilter = new G4SDParticleFilter(filterName="gammaFilter",particleName="gamma");
  G4SDParticleFilter* electronFilter = new G4SDParticleFilter(filterName="electronFilter",particleName="e-");
  G4SDParticleFilter* positronFilter = new G4SDParticleFilter(filterName="positronFilter",particleName="e+");
  G4SDParticleFilter* epFilter = new G4SDParticleFilter(filterName="epFilter");
  epFilter->add(particleName="e-");
  epFilter->add(particleName="e+");


  for(G4int i=0;i<3;i++)
  {
   for(G4int j=0;j<2;j++)
   {
    // Loop counter j = 0 : absorber
    //                = 1 : gap
    G4String detName = calName[i];
    if(j==0)
    { detName += "_abs"; }
    else
    { detName += "_gap"; }
    G4MultiFunctionalDetector* det = new G4MultiFunctionalDetector(detName);

    //  The second argument in each primitive means the "level" of geometrical hierarchy,
    // the copy number of that level is used as the key of the G4THitsMap.
    //  For absorber (j = 0), the copy number of its own physical volume is used.
    //  For gap (j = 1), the copy number of its mother physical volume is used, since there
    // is only one physical volume of gap is placed with respect to its mother.
    G4VPrimitiveScorer* primitive;
    primitive = new G4PSEnergyDeposit("eDep",j);
    det->RegisterPrimitive(primitive);
    primitive = new G4PSNofSecondary("nGamma",j);
    primitive->SetFilter(gammaFilter);
    det->RegisterPrimitive(primitive);
    primitive = new G4PSNofSecondary("nElectron",j);
    primitive->SetFilter(electronFilter);
    det->RegisterPrimitive(primitive);
    primitive = new G4PSNofSecondary("nPositron",j);
    primitive->SetFilter(positronFilter);
    det->RegisterPrimitive(primitive);
    primitive = new G4PSMinKinEAtGeneration("minEkinGamma",j);
    primitive->SetFilter(gammaFilter);
    det->RegisterPrimitive(primitive);
    primitive = new G4PSMinKinEAtGeneration("minEkinElectron",j);
    primitive->SetFilter(electronFilter);
    det->RegisterPrimitive(primitive);
    primitive = new G4PSMinKinEAtGeneration("minEkinPositron",j);
    primitive->SetFilter(positronFilter);
    det->RegisterPrimitive(primitive);
    primitive = new G4PSTrackLength("trackLength",j);
    primitive->SetFilter(epFilter);
    det->RegisterPrimitive(primitive);
    primitive = new G4PSNofStep("nStep",j);
    primitive->SetFilter(epFilter);
    det->RegisterPrimitive(primitive);

    G4SDManager::GetSDMpointer()->AddNewDetector(det);
    if(j==0)
    { layerLogical[i]->SetSensitiveDetector(det); }
    else
    { gapLogical[i]->SetSensitiveDetector(det); }
   }
  }
  G4SDManager::GetSDMpointer()->SetVerboseLevel(0);
}

void ExN07DetectorConstruction::PrintCalorParameters() const
{
  G4cout << "--------------------------------------------------------" << G4endl;
  if(serial)
  { G4cout << " Calorimeters are placed in serial." << G4endl; }
  else
  { G4cout << " Calorimeters are placed in parallel." << G4endl; }
  G4cout << " Absorber is made of " << absorberMaterial->GetName() << G4endl;
  G4cout << " Gap is made of " << gapMaterial->GetName() << G4endl;
  G4cout << "--------------------------------------------------------" << G4endl;
}

void ExN07DetectorConstruction::SetAbsorberMaterial(G4String materialChoice)
{
  // search the material by its name   
  G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);     
  if(pttoMaterial)
  {
    absorberMaterial = pttoMaterial;
    if(constructed) for(size_t i=0;i<3;i++)
    {
      calorLogical[i]->SetMaterial(absorberMaterial);
      layerLogical[i]->SetMaterial(absorberMaterial);
    }
    G4RunManager::GetRunManager()->GeometryHasBeenModified();
    if (GetVerboseLevel()>1) {
      PrintCalorParameters();
    }
  }
  else
  { G4cerr << materialChoice << " is not defined. - Command is ignored." << G4endl; }
}

G4String ExN07DetectorConstruction::GetAbsorberMaterial() const
{ return absorberMaterial->GetName(); }

void ExN07DetectorConstruction::SetGapMaterial(G4String materialChoice)
{
  // search the material by its name 
  G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);  
  if(pttoMaterial)
  {
    gapMaterial = pttoMaterial;
    if(constructed) for(size_t i=0;i<3;i++)
    { gapLogical[i]->SetMaterial(gapMaterial); }
    G4RunManager::GetRunManager()->GeometryHasBeenModified();
    if (GetVerboseLevel()>1) {
      PrintCalorParameters();
    }
   }
  else
  { G4cerr << materialChoice << " is not defined. - Command is ignored." << G4endl; }
}

G4String ExN07DetectorConstruction::GetGapMaterial() const
{ return gapMaterial->GetName(); }

void ExN07DetectorConstruction::SetSerialGeometry(G4bool ser)
{
  if(serial==ser) return;
  serial=ser;
  ExN07PrimaryGeneratorAction* gen = (ExN07PrimaryGeneratorAction*)
          (G4RunManager::GetRunManager()->GetUserPrimaryGeneratorAction());
  if(gen) gen->SetSerial(serial);
  if(!constructed) return;
  for(G4int i=0;i<3;i++)
  {
    if(serial)
    { calorPhysical[i]->SetTranslation(G4ThreeVector(0.,0.,G4double(i-1)*2.*m)); }
    else
    { calorPhysical[i]->SetTranslation(G4ThreeVector(0.,G4double(i-1)*m,0.)); }
  }
  ((ExN07ParallelWorld*)GetParallelWorld(0))->SetSerialGeometry(ser);
  G4RunManager::GetRunManager()->GeometryHasBeenModified();
}

void ExN07DetectorConstruction::SetNumberOfLayers(G4int nl)
{
  numberOfLayers = nl;
  layerThickness = totalThickness/numberOfLayers;
  if(!constructed) return;

  layerSolid->SetZHalfLength(layerThickness/2.);
  gapSolid->SetZHalfLength(layerThickness/4.);
  for(size_t i=0;i<3;i++)
  { 
    calorLogical[i]->RemoveDaughter(layerPhysical[i]);
    delete layerPhysical[i];
    layerPhysical[i] = new G4PVReplica(calName[i]+"_Layer",layerLogical[i],calorLogical[i],kZAxis,
                          numberOfLayers,layerThickness);
    gapPhysical[i]->SetTranslation(G4ThreeVector(0.,0.,layerThickness/4.));
  }
  G4RunManager::GetRunManager()->GeometryHasBeenModified();
}

void   ExN07DetectorConstruction::AddMaterial()
{
  static G4bool isAdded = false;   

  if( isAdded ) return;

  G4String name, symbol;             //a=mass of a mole;
  G4double a, z, density;            //z=mean number of protons;  

  G4int ncomponents, natoms;

  //
  // define simple materials
  //

  new G4Material(name="Copper", z=29., a=63.546*g/mole, density=8.96*g/cm3);
  new G4Material(name="Tungsten", z=74., a=183.84*g/mole, density=19.3*g/cm3);

  G4Element* C = G4Element::GetElement("Carbon");
  G4Element* O = G4Element::GetElement("Oxygen");
  

  G4Material* CO2 = 
    new G4Material("CarbonicGas", density= 27.*mg/cm3, ncomponents=2,
		   kStateGas, 325.*kelvin, 50.*atmosphere);
  CO2->AddElement(C, natoms=1);
  CO2->AddElement(O, natoms=2);

  isAdded = true;

}