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ML2Ph_BoxInBox.cc
Go to the documentation of this file. Or view the newest version in sPHENIX GitHub for file ML2Ph_BoxInBox.cc
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25 //
26 // The code was written by :
27 // ^Claudio Andenna claudio.andenna@ispesl.it, claudio.andenna@iss.infn.it
28 // *Barbara Caccia barbara.caccia@iss.it
29 // with the support of Pablo Cirrone (LNS, INFN Catania Italy)
30 // with the contribute of Alessandro Occhigrossi*
31 //
32 // ^INAIL DIPIA - ex ISPESL and INFN Roma, gruppo collegato Sanità, Italy
33 // *Istituto Superiore di Sanità and INFN Roma, gruppo collegato Sanità, Italy
34 // Viale Regina Elena 299, 00161 Roma (Italy)
35 // tel (39) 06 49902246
36 // fax (39) 06 49387075
37 //
38 // more information:
39 // http://g4advancedexamples.lngs.infn.it/Examples/medical-linac
40 //
41 //*******************************************************//
42 
43 #include "ML2Ph_BoxInBox.hh"
44 #include "G4SystemOfUnits.hh"
45 
46 CML2Ph_BoxInBox::CML2Ph_BoxInBox()
47 {// phantom size
48  halfSize.set(150.*mm,150.*mm,150.*mm);
49 // phantom position
50  centre.set(0.*mm,0.*mm,0.*mm);
51 }
52 
53 CML2Ph_BoxInBox::~CML2Ph_BoxInBox(void)
54 {
55 }
56 void CML2Ph_BoxInBox::writeInfo()
57 {
58  G4cout<<"\n\n\tcentre of the inside box: " <<centreBoxInside/mm<<" [mm]"<< G4endl;
59  G4cout<<"\thalf thickness of the inside box: " <<halfBoxInside_Thickness/mm<<" [mm]\n"<< G4endl;
60 }
61 bool CML2Ph_BoxInBox::Construct(G4VPhysicalVolume *PWorld)
62 {
63  PVWorld = PWorld;
64 
65 
66  G4double A, Z;
67  A = 1.01*g/mole;
68  G4Element* elH = new G4Element ("Hydrogen","H",Z = 1.,A);
69 
70  A = 12.011*g/mole;
71  G4Element* elC = new G4Element("Carbon","C",Z = 6.,A);
72 
73  A = 16.00*g/mole;
74  G4Element* elO = new G4Element("Oxygen","O",Z = 8.,A);
75 
76  G4double d= 1.18*g/cm3;
77  G4int natoms, ncomponents;
78  G4Material* PMMA = new G4Material("Polimetilmetacrilato",d,ncomponents=3);
79  PMMA->AddElement(elC, natoms=5);
80  PMMA->AddElement(elH, natoms=8);
81  PMMA->AddElement(elO, natoms=2);
82 
83  d= 0.1*g/cm3;
84  G4Material* lightWater = new G4Material("lightWater",d,ncomponents=2);
85  lightWater->AddElement(elH, natoms=2);
86  lightWater->AddElement(elO, natoms=1);
87 
88 
89 
90 // BOX INSIDE
91  G4Material *boxInSideMaterial;
92 
93  boxInSideMaterial=PMMA;
94  G4cout <<"boxInSideMaterial name "<<boxInSideMaterial->GetName() <<" density "<< boxInSideMaterial->GetDensity()/(g/cm3) <<" g/cm3"<< G4endl;
95 
96  centreBoxInside.set(0,0,-50); // the centre of the inside box
97  halfBoxInside_Thickness=3.*cm; // the half thickness of the inside box
98 
99  G4Box *boxInSide=new G4Box("BoxInSide", halfBoxInside_Thickness, halfBoxInside_Thickness, halfBoxInside_Thickness);
100  G4LogicalVolume *boxInSideLV=new G4LogicalVolume(boxInSide, boxInSideMaterial, "boxInSideLV");
101  boxInSidePV = new G4PVPlacement(0, centre+centreBoxInside,"BoxInsidePV", boxInSideLV,PVWorld,false,0,0);
102 
103 // layer PMMA
104  G4Material *layerMaterial=G4NistManager::Instance()->FindOrBuildMaterial("G4_PLEXIGLASS"); // changable
105  G4double halfPMMA_Z_Thickness=0.5*cm;
106  G4Box *layer=new G4Box("layer", halfSize.getX(), halfSize.getY(), halfPMMA_Z_Thickness);
107  G4LogicalVolume *layerLV = new G4LogicalVolume(layer, layerMaterial, "layerLV");
108  layerPV = new G4PVPlacement(0, centre+G4ThreeVector(0,0,-halfSize.getZ()+halfPMMA_Z_Thickness),"layerPV", layerLV,PVWorld,false,0,0);
109 
110  G4cout <<"layerMaterial name "<<layerMaterial->GetName() <<" density " << layerMaterial->GetDensity()/(g/cm3) <<" g/cm3"<< G4endl;
111 
112 // BOX OUTSIDE
113  G4Material *boxOutSideMaterial=G4NistManager::Instance()->FindOrBuildMaterial("G4_LUNG_ICRP"); // changable
114  boxOutSideMaterial=lightWater;
115  G4double halfBoxOutSide_Thickness=halfSize.getZ()-halfPMMA_Z_Thickness;
116  G4Box *boxOutSide=new G4Box("BoxOutSide", halfSize.getX(), halfSize.getY(), halfBoxOutSide_Thickness);
117 
118  // boolean logic subtraction between outside box and inside box
119 
120  G4SubtractionSolid* OutMinusInBox = new G4SubtractionSolid("OutMinusInBox", boxOutSide, boxInSide, 0, centreBoxInside-G4ThreeVector(0,0,5));
121  G4LogicalVolume *OutMinusInBoxLV = new G4LogicalVolume(OutMinusInBox, boxOutSideMaterial,"OutMinusInBoxLV",0,0,0);
122  OutMinusInBoxPV = new G4PVPlacement(0, centre+G4ThreeVector(0,0,-halfSize.getZ()+2*halfPMMA_Z_Thickness+halfBoxOutSide_Thickness),
123  "OutMinusInBoxPV",OutMinusInBoxLV,PVWorld,false,0);
124 
125  G4cout <<"boxOutSideMaterial name "<<boxOutSideMaterial->GetName() <<" density "<<boxOutSideMaterial->GetDensity()/(g/cm3) <<" g/cm3"<< G4endl;
126 
127  // Region for cuts
128  G4Region *regVol= new G4Region("BoxInBoxR");
129  G4ProductionCuts* cuts = new G4ProductionCuts;
130  cuts->SetProductionCut(0.01*mm);
131  regVol->SetProductionCuts(cuts);
132 
133 
134  OutMinusInBoxLV->SetRegion(regVol);
135  regVol->AddRootLogicalVolume(OutMinusInBoxLV);
136  OutMinusInBoxLV->SetUserLimits(new G4UserLimits(0.01*mm));
137 
138  layerLV->SetRegion(regVol);
139  regVol->AddRootLogicalVolume(layerLV);
140  layerLV->SetUserLimits(new G4UserLimits(0.01*mm));
141 
142  boxInSideLV->SetRegion(regVol);
143  regVol->AddRootLogicalVolume(boxInSideLV);
144  boxInSideLV->SetUserLimits(new G4UserLimits(0.01*mm));
145 
146  // Visibility
147  G4VisAttributes* simple_PMMA_VisAttWalls= new G4VisAttributes(G4Colour::Gray());
148  G4VisAttributes* simple_InBox_VisAttWalls= new G4VisAttributes(G4Colour::Red());
149  G4VisAttributes* simple_OutBox_VisAttWalls= new G4VisAttributes(G4Colour::Blue());
150 
151  simple_OutBox_VisAttWalls->SetVisibility(true);
152 // simple_OutBox_VisAttWalls->SetForceWireframe(true);
153 // simple_OutBox_VisAttWalls->SetForceAuxEdgeVisible(true);
154  simple_OutBox_VisAttWalls->SetLineWidth(2.);
155 // simple_OutBox_VisAttWalls->SetForceSolid(true);
156 
157  simple_PMMA_VisAttWalls->SetVisibility(true);
158 // simple_PMMA_VisAttWalls->SetForceSolid(true);
159 
160  simple_InBox_VisAttWalls->SetVisibility(true);
161 // simple_InBox_VisAttWalls->SetForceSolid(true);
162 
163  OutMinusInBoxLV->SetVisAttributes(simple_OutBox_VisAttWalls);
164  boxInSideLV->SetVisAttributes(simple_InBox_VisAttWalls);
165  layerLV->SetVisAttributes(simple_PMMA_VisAttWalls);
166 
167 
168  return true;
169 }