PassiveCarbonBeamLine.cc

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// **************************************************************************************
//
// HADRONTHERAPY:  a Geant4-based application for proton/ion-therapy studies
// _________________________________________________________________________
//
// This is the FULL version of the Hadrontherapy application.
// It is based on the Geant4 toolkit classes and released under the GPL3 license.
//
// Its basic version is released and maintained inside the Geant4 code
// as Advanced Example.
//
// To compile and run Hadrontherapy you only require the installation of Geant4 and,
// if you wish, the ROOT ananlysis program.
//
// For more information see the documentation at http://sites.google.com/site/hadrontherapy/
// or contact cirrone@lns.infn.it
//
// **************************************************************************************


#include "G4Box.hh"
#include "G4Tubs.hh"
#include "G4VisAttributes.hh"
#include "G4Colour.hh"
#include "globals.hh"
#include "G4RunManager.hh"
#include "G4LogicalVolume.hh"
#include "G4PVPlacement.hh"
#include "G4RotationMatrix.hh"
#include "G4NistManager.hh"
#include "G4NistElementBuilder.hh"
#include "HadrontherapyDetectorConstruction.hh"
#include "HadrontherapyModulator.hh"
#include "PassiveCarbonBeamLine.hh"
#include "G4SystemOfUnits.hh"


PassiveCarbonBeamLine::PassiveCarbonBeamLine():
physicalTreatmentRoom(0), hadrontherapyDetectorConstruction(0),
physiBeamLineSupport(0), physiBeamLineCover(0), physiBeamLineCover2(0), 
physiKaptonWindow(0), 
physiFirstMonitorLayer1(0), physiFirstMonitorLayer2(0),
physiFirstMonitorLayer3(0), physiFirstMonitorLayer4(0),
physiNozzleSupport(0), physiHoleNozzleSupport(0),
physiSecondHoleNozzleSupport(0),
solidFinalCollimator(0),
physiFinalCollimator(0)
{
    // Messenger to change parameters of the passiveProtonBeamLine geometry
    //passiveMessenger = new PassiveProtonBeamLineMessenger(this);
    
}

PassiveCarbonBeamLine::~PassiveCarbonBeamLine()
{
    //delete passiveMessenger;
    delete hadrontherapyDetectorConstruction;
}

G4VPhysicalVolume* PassiveCarbonBeamLine::Construct()
{ 
    // Sets default geometry and materials
    SetDefaultDimensions();
    
    // Construct the whole CarbonPassive Beam Line 
    ConstructPassiveCarbonBeamLine();
    
    // HadrontherapyDetectorConstruction builds ONLY the phantom and the detector with its associated ROGeometry
    hadrontherapyDetectorConstruction = new HadrontherapyDetectorConstruction(physicalTreatmentRoom); 
    
    return physicalTreatmentRoom;
}

// In the following method the DEFAULTS used in the geometry of 
// passive beam line are provided
// HERE THE USER CAN CHANGE THE GEOMETRY CHARACTERISTICS OF BEAM
// LINE ELEMENTS, ALTERNATIVELY HE/SHE CAN USE THE MACRO FILE (IF A 
// MESSENGER IS PROVIDED)
//
// DEFAULT MATERIAL ARE ALSO PROVIDED   
// and COLOURS ARE ALSO DEFINED
// ----------------------------------------------------------
void PassiveCarbonBeamLine::SetDefaultDimensions()
{
    // Set of coulors that can be used
    white = new G4VisAttributes( G4Colour());
    white -> SetVisibility(true);
    white -> SetForceSolid(true);
    
    blue = new G4VisAttributes(G4Colour(0. ,0. ,1.));
    blue -> SetVisibility(true);
    blue -> SetForceSolid(true);
    
    gray = new G4VisAttributes( G4Colour(0.5, 0.5, 0.5 ));
    gray-> SetVisibility(true);
    gray-> SetForceSolid(true);
    
    red = new G4VisAttributes(G4Colour(1. ,0. ,0.));
    red-> SetVisibility(true);
    red-> SetForceSolid(true);
    
    yellow = new G4VisAttributes(G4Colour(1., 1., 0. ));
    yellow-> SetVisibility(true);
    yellow-> SetForceSolid(true);
    
    green = new G4VisAttributes( G4Colour(25/255. , 255/255. ,  25/255. ));
    green -> SetVisibility(true);
    green -> SetForceSolid(true);
    
    darkGreen = new G4VisAttributes( G4Colour(0/255. , 100/255. ,  0/255. ));
    darkGreen -> SetVisibility(true);
    darkGreen -> SetForceSolid(true);
    
    darkOrange3 = new G4VisAttributes( G4Colour(205/255. , 102/255. ,  000/255. ));
    darkOrange3 -> SetVisibility(true);
    darkOrange3 -> SetForceSolid(true);
    
    skyBlue = new G4VisAttributes( G4Colour(135/255. , 206/255. ,  235/255. ));
    skyBlue -> SetVisibility(true);
    skyBlue -> SetForceSolid(true);
    
    
    // VACUUM PIPE: first track of the beam line is inside vacuum;
    // The PIPE contains  KAPTON WINDOW
    G4double defaultVacuumZoneXSize = 80.5325 *mm;
    vacuumZoneXSize = defaultVacuumZoneXSize;
    
    G4double defaultVacuumZoneYSize = 52.5 *mm;
    vacuumZoneYSize = defaultVacuumZoneYSize;
    
    G4double defaultVacuumZoneZSize = 52.5 *mm;
    vacuumZoneZSize = defaultVacuumZoneZSize;
    
    // XXX -1775 mm (xKapton to WORLD) - 80.5075 (xKapton to vacuumZone) 
    G4double defaultVacuumZoneXPosition = -1855.5075 *mm;
    vacuumZoneXPosition = defaultVacuumZoneXPosition;
    
    
    // KAPTON WINDOW: it permits the passage of the beam from vacuum to air
    G4double defaultKaptonWindowXSize = 0.025*mm;
    kaptonWindowXSize = defaultKaptonWindowXSize;
    
    G4double defaultKaptonWindowYSize = 5.25*cm;
    kaptonWindowYSize = defaultKaptonWindowYSize;
    
    G4double defaultKaptonWindowZSize = 5.25*cm;
    kaptonWindowZSize = defaultKaptonWindowZSize;
    
    G4double defaultKaptonWindowXPosition = 80.5075*mm;
    kaptonWindowXPosition = defaultKaptonWindowXPosition;
    
    // FIRST SCATTERING FOIL: a thin foil performing a first scattering
    // of the original beam
    G4double defaultFirstScatteringFoilXSize = 0.025 *mm;
    firstScatteringFoilXSize = defaultFirstScatteringFoilXSize; 
    
    G4double defaultFirstScatteringFoilYSize = 105.0   *mm;
    firstScatteringFoilYSize = defaultFirstScatteringFoilYSize;
    
    G4double defaultFirstScatteringFoilZSize = 105   *mm;
    firstScatteringFoilZSize = defaultFirstScatteringFoilZSize;
    
    G4double defaultFirstScatteringFoilXPosition = 0.0 *mm;
    firstScatteringFoilXPosition = defaultFirstScatteringFoilXPosition;
    
    
    
    // STOPPER AND SCATTERING FOIL SIMULATED TO TEST THEIR EFFECT
    // IN THE LATERAL DOSE DISTRIBUTION
    // STOPPER: is a small cylinder able to stop the central component
    // of the beam (having a gaussian shape). It is connected to the SECON SCATTERING FOIL
    // and represent the second element of the scattering system
    G4double defaultInnerRadiusStopper = 0.*cm;
    innerRadiusStopper = defaultInnerRadiusStopper;
    
    G4double defaultHeightStopper = 7.0 *mm;
    heightStopper = defaultHeightStopper;
    
    G4double defaultStartAngleStopper = 0.*deg;
    startAngleStopper = defaultStartAngleStopper;
    
    G4double defaultSpanningAngleStopper = 360.*deg;
    spanningAngleStopper = defaultSpanningAngleStopper;
    
    G4double defaultStopperXPosition = -1675.0 *mm;
    stopperXPosition = defaultStopperXPosition;
    
    G4double defaultStopperYPosition = 0.*m;
    stopperYPosition = defaultStopperYPosition;
    
    G4double defaultStopperZPosition = 0.*m;
    stopperZPosition = defaultStopperZPosition;
    
    G4double defaultOuterRadiusStopper = 2 *mm;
    outerRadiusStopper = defaultOuterRadiusStopper; 
    
    // SECOND SCATTERING FOIL: it is another thin foil and provides the
    // final diffusion of the beam. It represents the third element of the scattering
    // system;
    G4double defaultSecondScatteringFoilXSize = 0.025 *mm;  
    secondScatteringFoilXSize = defaultSecondScatteringFoilXSize;
    
    G4double defaultSecondScatteringFoilYSize = 105.0   *mm;
    secondScatteringFoilYSize = defaultSecondScatteringFoilYSize;
    
    G4double defaultSecondScatteringFoilZSize = 105.0   *mm;
    secondScatteringFoilZSize = defaultSecondScatteringFoilZSize;
    
    G4double defaultSecondScatteringFoilXPosition = defaultStopperXPosition + defaultHeightStopper + defaultSecondScatteringFoilXSize/2;
    secondScatteringFoilXPosition = defaultSecondScatteringFoilXPosition;
    
    G4double defaultSecondScatteringFoilYPosition =  0 *mm;
    secondScatteringFoilYPosition = defaultSecondScatteringFoilYPosition;
    
    G4double defaultSecondScatteringFoilZPosition =  0 *mm;
    secondScatteringFoilZPosition = defaultSecondScatteringFoilZPosition;
    
    
    // FINAL COLLIMATOR: is the collimator giving the final transversal shape
    // of the beam 
    G4double defaultinnerRadiusFinalCollimator = 12.5 *mm;
    innerRadiusFinalCollimator = defaultinnerRadiusFinalCollimator;
    
    // DEFAULT DEFINITION OF THE MATERIALS
    // All elements and compound definition follows the NIST database
    
    // ELEMENTS
    G4bool isotopes = false;
    G4Material* aluminumNist = G4NistManager::Instance()->FindOrBuildMaterial("G4_Al", isotopes);
    G4Material* copperNistAsMaterial = G4NistManager::Instance()->FindOrBuildMaterial("G4_Cu", isotopes);
    G4Element* zincNist = G4NistManager::Instance()->FindOrBuildElement("Zn");
    G4Element* copperNist = G4NistManager::Instance()->FindOrBuildElement("Cu");
    G4Material* tantalumNist = G4NistManager::Instance()->FindOrBuildMaterial("G4_Ta", isotopes); 
    
    // COMPOUND
    G4Material* airNist =  G4NistManager::Instance()->FindOrBuildMaterial("G4_AIR", isotopes);
    G4Material* kaptonNist = G4NistManager::Instance()->FindOrBuildMaterial("G4_KAPTON", isotopes);
    G4Material* galacticNist = G4NistManager::Instance()->FindOrBuildMaterial("G4_Galactic", isotopes);
    G4Material* PMMANist = G4NistManager::Instance()->FindOrBuildMaterial("G4_PLEXIGLASS", isotopes);
    
    G4double d; // Density
    G4int nComponents;// Number of components 
    G4double fractionmass; // Fraction in mass of an element in a material
    
    d = 8.40*g/cm3;
    nComponents = 2;
    G4Material* brass = new G4Material("Brass", d, nComponents);  
    brass -> AddElement(zincNist, fractionmass = 30 *perCent);
    brass -> AddElement(copperNist, fractionmass = 70 *perCent);
    
    
    // MATERIAL ASSIGNMENT
    // Support of the beam line
    beamLineSupportMaterial = aluminumNist;
    
    // Vacuum pipe
    vacuumZoneMaterial = galacticNist;
    
    // Material of the firt scattering foil
    firstScatteringFoilMaterial = tantalumNist;
    
    // Material of kapton window 
    kaptonWindowMaterial = kaptonNist;
    
    // Material of the stopper
    stopperMaterial = brass;
    
    // Material of the second scattering foil 
    secondScatteringFoilMaterial = tantalumNist; 
    
    // Materials of the monitor chamber
    layer1MonitorChamberMaterial = kaptonNist;
    layer2MonitorChamberMaterial = copperNistAsMaterial;
    layer3MonitorChamberMaterial = airNist;
    layer4MonitorChamberMaterial = copperNistAsMaterial;
    
    
    // material of the final nozzle
    nozzleSupportMaterial = PMMANist;
    holeNozzleSupportMaterial = brass;
    seconHoleNozzleSupportMaterial = airNist;
    
    // Material of the final collimator
    finalCollimatorMaterial = brass;
}

void PassiveCarbonBeamLine::ConstructPassiveCarbonBeamLine()
{ 
    // -----------------------------
    // Treatment room - World volume
    //------------------------------
    // Treatment room sizes
    const G4double worldX = 400.0 *cm;
    const G4double worldY = 400.0 *cm;
    const G4double worldZ = 400.0 *cm;
    G4bool isotopes = false;
    
    G4Material* airNist =  G4NistManager::Instance()->FindOrBuildMaterial("G4_AIR", isotopes);
    G4Box* treatmentRoom = new G4Box("TreatmentRoom",worldX,worldY,worldZ);
    G4LogicalVolume* logicTreatmentRoom = new G4LogicalVolume(treatmentRoom, 
                                                              airNist, 
                                                              "logicTreatmentRoom", 
                                                              0,0,0);
    physicalTreatmentRoom = new G4PVPlacement(0,
                                              G4ThreeVector(),
                                              "physicalTreatmentRoom", 
                                              logicTreatmentRoom, 
                                              0,false,0);
    
    
    // The treatment room is invisible in the Visualisation
    logicTreatmentRoom -> SetVisAttributes (G4VisAttributes::Invisible);
    
    // Components of the Passive Carbon Beam Line
    HadrontherapyBeamLineSupport();
    VacuumToAirInterface();
    ScatteringSystem();
    HadrontherapyBeamMonitoring();
    HadrontherapyBeamNozzle();
    HadrontherapyBeamFinalCollimator();
}

void PassiveCarbonBeamLine::HadrontherapyBeamLineSupport()
{
    // ------------------//
    // BEAM LINE SUPPORT //
    //-------------------//
    const G4double beamLineSupportXSize = 1.5*m;
    const G4double beamLineSupportYSize = 20.*mm;
    const G4double beamLineSupportZSize = 600.*mm;
    
    const G4double beamLineSupportXPosition = -1745.09 *mm;
    const G4double beamLineSupportYPosition = -230. *mm; 
    const G4double beamLineSupportZPosition = 0.*mm;
    
    G4Box* beamLineSupport = new G4Box("BeamLineSupport", 
                                       beamLineSupportXSize, 
                                       beamLineSupportYSize, 
                                       beamLineSupportZSize);
    
    G4LogicalVolume* logicBeamLineSupport = new G4LogicalVolume(beamLineSupport, 
                                                                beamLineSupportMaterial, 
                                                                "BeamLineSupport");
    physiBeamLineSupport = new G4PVPlacement(0, G4ThreeVector(beamLineSupportXPosition, 
                                                              beamLineSupportYPosition,
                                                              beamLineSupportZPosition),
                                             "BeamLineSupport", 
                                             logicBeamLineSupport, 
                                             physicalTreatmentRoom, false, 0);
    
    // Visualisation attributes of the beam line support
    
    logicBeamLineSupport -> SetVisAttributes(gray);
    
    //---------------------------------//
    //  Beam line cover 1 (left panel) //
    //---------------------------------//
    const G4double beamLineCoverXSize = 1.5*m;
    const G4double beamLineCoverYSize = 750.*mm;
    const G4double beamLineCoverZSize = 10.*mm; 
    
    const G4double beamLineCoverXPosition = -1745.09 *mm;
    const G4double beamLineCoverYPosition = -980.*mm; 
    const G4double beamLineCoverZPosition = 600.*mm;
    
    G4Box* beamLineCover = new G4Box("BeamLineCover",
                                     beamLineCoverXSize, 
                                     beamLineCoverYSize, 
                                     beamLineCoverZSize);
    
    G4LogicalVolume* logicBeamLineCover = new G4LogicalVolume(beamLineCover,
                                                              beamLineSupportMaterial, 
                                                              "BeamLineCover");
    
    physiBeamLineCover = new G4PVPlacement(0, G4ThreeVector(beamLineCoverXPosition,
                                                            beamLineCoverYPosition,
                                                            beamLineCoverZPosition),
                                           "BeamLineCover", 
                                           logicBeamLineCover, 
                                           physicalTreatmentRoom,
                                           false, 
                                           0);
    
    // ---------------------------------//
    //  Beam line cover 2 (rigth panel) //
    // ---------------------------------//
    // It has the same characteristic of beam line cover 1 but set in a different position
    physiBeamLineCover2 = new G4PVPlacement(0, G4ThreeVector(beamLineCoverXPosition,
                                                             beamLineCoverYPosition,
                                                             - beamLineCoverZPosition),
                                            "BeamLineCover2", 
                                            logicBeamLineCover, 
                                            physicalTreatmentRoom, 
                                            false, 
                                            0);
    
    
    logicBeamLineCover -> SetVisAttributes(blue);
}

void PassiveCarbonBeamLine::VacuumToAirInterface()
{
    // ------------//
    // VACUUM PIPE //
    //-------------//
    //
    // First track of the beam line is inside vacuum;
    // The PIPE contains the FIRST SCATTERING FOIL and the KAPTON WINDOW
    G4Box* vacuumZone = new G4Box("VacuumZone", 
                                  vacuumZoneXSize, 
                                  vacuumZoneYSize, 
                                  vacuumZoneZSize);
    
    G4LogicalVolume* logicVacuumZone = new G4LogicalVolume(vacuumZone, 
                                                           vacuumZoneMaterial, 
                                                           "VacuumZone");
    
    G4VPhysicalVolume* physiVacuumZone = new G4PVPlacement(0, 
                                                           G4ThreeVector(vacuumZoneXPosition, 0., 0.),
                                                           "VacuumZone",
                                                           logicVacuumZone, 
                                                           physicalTreatmentRoom, 
                                                           false, 
                                                           0);
    
    
    
    
    
    // --------------------------//
    // THE FIRST SCATTERING FOIL //
    // --------------------------//
    // A thin foil performing a first scattering
    // of the original beam
    
    firstScatteringFoil = new G4Box("FirstScatteringFoil", 
                                    firstScatteringFoilXSize/2, 
                                    firstScatteringFoilYSize/2, 
                                    firstScatteringFoilZSize/2);
    
    G4LogicalVolume* logicFirstScatteringFoil = new G4LogicalVolume(firstScatteringFoil,
                                                                    firstScatteringFoilMaterial,
                                                                    "FirstScatteringFoil");
    
    physiFirstScatteringFoil = new G4PVPlacement(0, 
                                                 G4ThreeVector(firstScatteringFoilXPosition, 0.,0.),
                                                 "FirstScatteringFoil", 
                                                 logicFirstScatteringFoil, 
                                                 physiVacuumZone, 
                                                 false, 0); 
    
    logicFirstScatteringFoil -> SetVisAttributes(skyBlue);
    
    
    
    // -------------------//
    // THE KAPTON WINDOWS //
    //--------------------//
    //It permits the passage of the beam from vacuum to air
    
    G4Box* solidKaptonWindow = new G4Box("KaptonWindow", 
                                         kaptonWindowXSize,
                                         kaptonWindowYSize,
                                         kaptonWindowZSize);
    
    G4LogicalVolume* logicKaptonWindow = new G4LogicalVolume(solidKaptonWindow, 
                                                             kaptonWindowMaterial,
                                                             "KaptonWindow");
    
    physiKaptonWindow = new G4PVPlacement(0, G4ThreeVector(kaptonWindowXPosition, 0., 0.), 
                                          "KaptonWindow", logicKaptonWindow,
                                          physiVacuumZone, false,   0); 
    
    logicKaptonWindow -> SetVisAttributes(darkOrange3);
}

void PassiveCarbonBeamLine::ScatteringSystem()
{
    // ------------//
    // THE STOPPER //
    //-------------//
    // Is a small cylinder able to stop the central component
    // of the beam (having a gaussian shape). It is connected to the SECON SCATTERING FOIL
    // and represent the second element of the scattering system
    
    G4double phi = 90. *deg;
        // Matrix definition for a 90 deg rotation with respect to Y axis
    G4RotationMatrix rm;
    rm.rotateY(phi);
    
    solidStopper = new G4Tubs("Stopper", 
                              innerRadiusStopper, 
                              outerRadiusStopper,
                              heightStopper/2, 
                              startAngleStopper,
                              spanningAngleStopper);
    
    logicStopper = new G4LogicalVolume(solidStopper, 
                                       stopperMaterial, 
                                       "Stopper", 
                                       0, 0, 0);
    
    physiStopper = new G4PVPlacement(G4Transform3D(rm, G4ThreeVector(stopperXPosition, 
                                                                     stopperYPosition, 
                                                                     stopperZPosition)),
                                     "Stopper", 
                                     logicStopper, 
                                     physicalTreatmentRoom, 
                                     false, 
                                     0);
    
    logicStopper -> SetVisAttributes(red);
    
    // ---------------------------//
    // THE SECOND SCATTERING FOIL //
    // ---------------------------//
    // It is another thin foil and provides the
    // final diffusion of the beam. It represents the third element of the scattering
    // system;
    
    secondScatteringFoil = new G4Box("SecondScatteringFoil", 
                                     secondScatteringFoilXSize/2, 
                                     secondScatteringFoilYSize/2,
                                     secondScatteringFoilZSize/2);
    
    G4LogicalVolume* logicSecondScatteringFoil = new G4LogicalVolume(secondScatteringFoil, 
                                                                     secondScatteringFoilMaterial,
                                                                     "SecondScatteringFoil");
    
    physiSecondScatteringFoil = new G4PVPlacement(0, G4ThreeVector(secondScatteringFoilXPosition,
                                                                   secondScatteringFoilYPosition,
                                                                   secondScatteringFoilZPosition),
                                                  "SeconScatteringFoil", 
                                                  logicSecondScatteringFoil, 
                                                  physicalTreatmentRoom, 
                                                  false, 
                                                  0);
    
    logicSecondScatteringFoil -> SetVisAttributes(skyBlue);
    
}

void PassiveCarbonBeamLine::HadrontherapyBeamMonitoring()
{
    // ----------------------------
    //   THE FIRST MONITOR CHAMBER
    // ----------------------------  
    // A monitor chamber is a free-air  ionisation chamber
    // able to measure do carbon fluence during the treatment.
    // Here its responce is not simulated in terms of produced 
    // charge but only the energy losses are taked into account.
    // Each chamber consist of 9 mm of air in a box
    // that has two layers one of kapton and one
    // of copper
    const G4double monitor1XSize = 4.525022*mm;
    const G4double monitor2XSize = 0.000011*mm;
    const G4double monitor3XSize = 4.5*mm;
    const G4double monitorYSize = 10.*cm; 
    const G4double monitorZSize = 10.*cm;
        // XXX (Camera monitor size = 9.050088 mm)
    const G4double monitor1XPosition = -1450.474956 *mm;
    const G4double monitor2XPosition = -4.500011*mm;
    const G4double monitor4XPosition = 4.500011*mm;
    
    G4Box* solidFirstMonitorLayer1 = new G4Box("FirstMonitorLayer1", 
                                               monitor1XSize, 
                                               monitorYSize, 
                                               monitorZSize);
    
    G4LogicalVolume* logicFirstMonitorLayer1 = new G4LogicalVolume(solidFirstMonitorLayer1, 
                                                                   layer1MonitorChamberMaterial,
                                                                   "FirstMonitorLayer1");
    
    physiFirstMonitorLayer1 = new G4PVPlacement(0,
                                                G4ThreeVector(monitor1XPosition,0.*cm,0.*cm),
                                                "FirstMonitorLayer1", 
                                                logicFirstMonitorLayer1, 
                                                physicalTreatmentRoom, 
                                                false, 
                                                0);
    
    G4Box* solidFirstMonitorLayer2 = new G4Box("FirstMonitorLayer2", 
                                               monitor2XSize, 
                                               monitorYSize, 
                                               monitorZSize);
    
    G4LogicalVolume* logicFirstMonitorLayer2 = new G4LogicalVolume(solidFirstMonitorLayer2,
                                                                   layer2MonitorChamberMaterial,
                                                                   "FirstMonitorLayer2");
    
    physiFirstMonitorLayer2 = new G4PVPlacement(0, G4ThreeVector(monitor2XPosition,0.*cm,0.*cm),
                                                "FirstMonitorLayer2", 
                                                logicFirstMonitorLayer2, 
                                                physiFirstMonitorLayer1,
                                                false, 
                                                0);
    
    G4Box* solidFirstMonitorLayer3 = new G4Box("FirstMonitorLayer3", 
                                               monitor3XSize, 
                                               monitorYSize, 
                                               monitorZSize);
    
    G4LogicalVolume* logicFirstMonitorLayer3 = new G4LogicalVolume(solidFirstMonitorLayer3, 
                                                                   layer3MonitorChamberMaterial, 
                                                                   "FirstMonitorLayer3");
    
    physiFirstMonitorLayer3 = new G4PVPlacement(0, 
                                                G4ThreeVector(0.*mm,0.*cm,0.*cm), 
                                                "MonitorLayer3",
                                                logicFirstMonitorLayer3, 
                                                physiFirstMonitorLayer1, 
                                                false, 
                                                0);
    
    G4Box* solidFirstMonitorLayer4 = new G4Box("FirstMonitorLayer4", 
                                               monitor2XSize, 
                                               monitorYSize, 
                                               monitorZSize);
    
    G4LogicalVolume* logicFirstMonitorLayer4 = new G4LogicalVolume(solidFirstMonitorLayer4, 
                                                                   layer4MonitorChamberMaterial, 
                                                                   "FirstMonitorLayer4");
    
    physiFirstMonitorLayer4 = new G4PVPlacement(0, G4ThreeVector(monitor4XPosition,0.*cm,0.*cm), 
                                                "FirstMonitorLayer4",
                                                logicFirstMonitorLayer4,
                                                physiFirstMonitorLayer1, false, 0);
    
    logicFirstMonitorLayer3 -> SetVisAttributes(white);
    
}

void PassiveCarbonBeamLine::HadrontherapyBeamNozzle()
{
    // ------------------------------//
    // THE FINAL TUBE AND COLLIMATOR //
    //-------------------------------//
    // The last part of the transport beam line consists of
    // a 59 mm thick PMMA slab (to stop all the diffused radiation), a 285 mm brass tube
    // (to well collimate the carbon beam) and a final collimator with 25 mm diameter
    // aperture (that provide the final trasversal shape of the beam)
    
    // -------------------//
    //     PMMA SUPPORT   //
    // -------------------//

    const G4double nozzleSupportXSize = 29.5 *mm;
    const G4double nozzleSupportYSize = 180. *mm;
    const G4double nozzleSupportZSize = 180. *mm;
    //XXX Placed at 
    const G4double nozzleSupportXPosition = -558. *mm;
    
    G4double phi = 90. *deg;     
    // Matrix definition for a 90 deg rotation. Also used for other volumes       
    G4RotationMatrix rm;               
    rm.rotateY(phi);
    
    G4Box* solidNozzleSupport = new G4Box("NozzleSupport", 
                                          nozzleSupportXSize, 
                                          nozzleSupportYSize, 
                                          nozzleSupportZSize);
    
    G4LogicalVolume* logicNozzleSupport = new G4LogicalVolume(solidNozzleSupport, 
                                                              nozzleSupportMaterial, 
                                                              "NozzleSupport");
    
    physiNozzleSupport = new G4PVPlacement(0, G4ThreeVector(nozzleSupportXPosition,0., 0.),
                                           "NozzleSupport", 
                                           logicNozzleSupport, 
                                           physicalTreatmentRoom, 
                                           false, 
                                           0);
    
    logicNozzleSupport -> SetVisAttributes(yellow);
    
    // -------------------//
    //     BRASS TUBE     //
    // -------------------//
    const G4double innerRadiusHoleNozzleSupport = 18.*mm;
    const G4double outerRadiusHoleNozzleSupport = 21.5 *mm;
    //XXX h/2 = 142.5 mm
    const G4double hightHoleNozzleSupport = 142.5*mm;
    const G4double startAngleHoleNozzleSupport = 0.*deg;
    const G4double spanningAngleHoleNozzleSupport = 360.*deg;
    //XXX -(320+142.5)mm
    const G4double holeNozzleSupportXPosition = -462.50 *mm;
    
    G4Tubs* solidHoleNozzleSupport = new G4Tubs("HoleNozzleSupport", 
                                                innerRadiusHoleNozzleSupport, 
                                                outerRadiusHoleNozzleSupport,
                                                hightHoleNozzleSupport, 
                                                startAngleHoleNozzleSupport, 
                                                spanningAngleHoleNozzleSupport);
    
    G4LogicalVolume* logicHoleNozzleSupport = new G4LogicalVolume(solidHoleNozzleSupport, 
                                                                  holeNozzleSupportMaterial, 
                                                                  "HoleNozzleSupport", 
                                                                  0, 0, 0);
    
    physiHoleNozzleSupport = new G4PVPlacement(G4Transform3D(rm, G4ThreeVector(holeNozzleSupportXPosition, 0., 0.)),
                                               "HoleNozzleSupport", 
                                               logicHoleNozzleSupport, 
                                               physicalTreatmentRoom, false, 0); 
    
    logicHoleNozzleSupport -> SetVisAttributes(darkOrange3);
    
    //--------------------------------------------------------------//
    // HOLE OF THE BRASS TUBE (otherwise we'll have PMMA)           //
    //--------------------------------------------------------------//
    const G4double innerRadiusSecondHoleNozzleSupport = 0.*mm;
    const G4double outerRadiusSecondHoleNozzleSupport = 18.*mm;
    const G4double hightSecondHoleNozzleSupport = 29.5 *mm;
    const G4double startAngleSecondHoleNozzleSupport = 0.*deg;
    const G4double spanningAngleSecondHoleNozzleSupport = 360.*deg;
    
    G4Tubs* solidSecondHoleNozzleSupport = new G4Tubs("SecondHoleNozzleSupport",
                                                      innerRadiusSecondHoleNozzleSupport,
                                                      outerRadiusSecondHoleNozzleSupport, 
                                                      hightSecondHoleNozzleSupport,
                                                      startAngleSecondHoleNozzleSupport, 
                                                      spanningAngleSecondHoleNozzleSupport);
    
    G4LogicalVolume* logicSecondHoleNozzleSupport = new G4LogicalVolume(solidSecondHoleNozzleSupport, 
                                                                        seconHoleNozzleSupportMaterial,
                                                                        "SecondHoleNozzleSupport",
                                                                        0, 
                                                                        0,
                                                                        0);
    
    physiSecondHoleNozzleSupport = new G4PVPlacement(G4Transform3D(rm, G4ThreeVector()), 
                                                     "SecondHoleNozzleSupport",
                                                     logicSecondHoleNozzleSupport, 
                                                     physiNozzleSupport, 
                                                     false, 0); 
    
    
    logicHoleNozzleSupport -> SetVisAttributes(darkOrange3); 
}

void PassiveCarbonBeamLine::HadrontherapyBeamFinalCollimator()
{
    // -----------------------//
    //     FINAL COLLIMATOR   //
    //------------------------//
    const G4double outerRadiusFinalCollimator = 21.5*mm;
    const G4double hightFinalCollimator = 3.5*mm;
    const G4double startAngleFinalCollimator = 0.*deg;
    const G4double spanningAngleFinalCollimator = 360.*deg;
    //XXX
    const G4double finalCollimatorXPosition = -323.50 *mm;  
    
    G4double phi = 90. *deg;     
    
    // Matrix definition for a 90 deg rotation. Also used for other volumes       
    G4RotationMatrix rm;
    rm.rotateY(phi);
    
    solidFinalCollimator = new G4Tubs("FinalCollimator", 
                                      innerRadiusFinalCollimator, 
                                      outerRadiusFinalCollimator,
                                      hightFinalCollimator, 
                                      startAngleFinalCollimator, 
                                      spanningAngleFinalCollimator);
    
    G4LogicalVolume* logicFinalCollimator = new G4LogicalVolume(solidFinalCollimator, 
                                                                finalCollimatorMaterial, 
                                                                "FinalCollimator", 
                                                                0,
                                                                0, 
                                                                0);
    
    physiFinalCollimator = new G4PVPlacement(G4Transform3D(rm, G4ThreeVector(finalCollimatorXPosition,0.,0.)),
                                             "FinalCollimator", logicFinalCollimator, physicalTreatmentRoom, false, 0); 
    
    logicFinalCollimator -> SetVisAttributes(yellow); 
}