Geant4  10.03.p03
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DetectorWatase86 Class Reference

#include <DetectorWatase86.hh>

Public Member Functions

 DetectorWatase86 ()
 
 ~DetectorWatase86 ()
 
G4VPhysicalVolumeConstruct ()
 
RadiatorDescriptionGetRadiatorDescription () const
 

Detailed Description

Definition at line 43 of file DetectorWatase86.hh.

Constructor & Destructor Documentation

DetectorWatase86::DetectorWatase86 ( )

Definition at line 55 of file DetectorWatase86.cc.

56  : fRadiatorDescription(0)
57 {}
DetectorWatase86::~DetectorWatase86 ( )

Definition at line 61 of file DetectorWatase86.cc.

62 {
63  // delete fRadiatorDescription;
64  // the description is deleted in detector construction
65 }

Member Function Documentation

G4VPhysicalVolume * DetectorWatase86::Construct ( void  )

Definition at line 69 of file DetectorWatase86.cc.

70 {
71  // Geometry parameters
72  //
73 
74  G4cout << "DetectorWatase86 setup" << G4endl;
75 
76  G4double worldSizeZ = 400.*cm;
77  G4double worldSizeR = 20.*cm;
78 
79  // Radiator and detector parameters
80 
81  G4double radThickness = 0.04*mm;
82  G4double gasGap = 0.126*mm;
83  G4double foilGasRatio = radThickness/(radThickness+gasGap);
84  G4double foilNumber = 300;
85 
86  G4double absorberThickness = 30.0*mm;
87  G4double absorberRadius = 100.*mm;
88 
89  G4double windowThick = 51.0*micrometer;
90  G4double electrodeThick = 10.0*micrometer;
91  G4double gapThick = 10.0*cm;
92  G4double detGap = 0.01*mm;
93 
94  G4double startZ = 100.0*mm;
95 
96  // Materials
97  //
98 
99  // Change to create materials using NIST
102  G4Material* xe10CH4 = Materials::GetInstance()->GetMaterial("Xe10CH4");
103 
104  G4double foilDensity = li->GetDensity();
105  G4double gasDensity = he->GetDensity();
106  G4double totDensity = foilDensity*foilGasRatio
107  + gasDensity*(1.0-foilGasRatio);
108 
109  G4double fractionFoil = foilDensity*foilGasRatio/totDensity;
110  G4double fractionGas = gasDensity*(1.0-foilGasRatio)/totDensity;
111  G4Material* radiatorMat = new G4Material("radiatorMat", totDensity, 2);
112  radiatorMat->AddMaterial(li, fractionFoil);
113  radiatorMat->AddMaterial(he, fractionGas);
114 
115  // Radiator description
116  fRadiatorDescription = new RadiatorDescription;
117  fRadiatorDescription->fFoilMaterial = li; // CH2; // Kapton; // Mylar ; // Li ; // CH2 ;
118  fRadiatorDescription->fGasMaterial = he; // CO2; // He; //
119  fRadiatorDescription->fFoilThickness = radThickness;
120  fRadiatorDescription->fGasThickness = gasGap;
121  fRadiatorDescription->fFoilNumber = foilNumber;
122 
123  G4Material* worldMaterial = he; // CO2;
124  G4Material* absorberMaterial = xe10CH4;
125 
126  // Volumes
127  //
128 
129  G4VSolid* solidWorld
130  = new G4Box("World", worldSizeR, worldSizeR, worldSizeZ/2.);
131 
132  G4LogicalVolume* logicWorld
133  = new G4LogicalVolume(solidWorld, worldMaterial, "World");
134 
135  G4VPhysicalVolume* physicsWorld
136  = new G4PVPlacement(0, G4ThreeVector(), "World", logicWorld, 0, false, 0);
137 
138  // TR radiator envelope
139 
140  G4double radThick = foilNumber*(radThickness + gasGap) - gasGap + detGap;
141  G4double radZ = startZ + 0.5*radThick;
142 
143  G4VSolid* solidRadiator
144  = new G4Box("Radiator", 1.1*absorberRadius, 1.1*absorberRadius, 0.5*radThick);
145 
146  G4LogicalVolume* logicRadiator
147  = new G4LogicalVolume(solidRadiator, radiatorMat, "Radiator");
148 
149  new G4PVPlacement(0, G4ThreeVector(0, 0, radZ),
150  "Radiator", logicRadiator, physicsWorld, false, 0 );
151 
152  fRadiatorDescription->fLogicalVolume = logicRadiator;
153 
154  // create region for radiator
155 
156  G4Region* radRegion = new G4Region("XTRradiator");
157  radRegion->AddRootLogicalVolume(logicRadiator);
158 
159  G4double windowZ = startZ + radThick + windowThick/2. + 15.0*mm;
160 
161  G4double gapZ = windowZ + windowThick/2. + gapThick/2. + 0.01*mm;
162 
163  G4double electrodeZ = gapZ + gapThick/2. + electrodeThick/2. + 0.01*mm;
164 
165  // Absorber
166 
167  G4double absorberZ = electrodeZ + electrodeThick/2.
168  + absorberThickness/2. + 0.01*mm;
169 
170  G4VSolid* solidAbsorber
171  = new G4Box("Absorber", absorberRadius, absorberRadius, absorberThickness/2.);
172 
173  G4LogicalVolume* logicAbsorber
174  = new G4LogicalVolume(solidAbsorber, absorberMaterial, "Absorber");
175 
176  new G4PVPlacement(0, G4ThreeVector(0., 0., absorberZ),
177  "Absorber", logicAbsorber, physicsWorld, false, 0);
178 
179  G4Region* regGasDet = new G4Region("XTRdEdxDetector");
180  regGasDet->AddRootLogicalVolume(logicAbsorber);
181 
182  // Sensitive Detectors: Absorber
183 
184  SensitiveDetector* sd = new SensitiveDetector("AbsorberSD");
186  logicAbsorber->SetSensitiveDetector(sd);
187 
188  // Print geometry parameters
189 
190  G4cout << "\n The WORLD is made of "
191  << worldSizeZ/mm << "mm of " << worldMaterial->GetName();
192  G4cout << ", the transverse size (R) of the world is "
193  << worldSizeR/mm << " mm. " << G4endl;
194  G4cout << " The ABSORBER is made of "
195  << absorberThickness/mm << "mm of " << absorberMaterial->GetName();
196  G4cout << ", the transverse size (R) is "
197  << absorberRadius/mm << " mm. " << G4endl;
198  G4cout << " Z position of the (middle of the) absorber "
199  << absorberZ/mm << " mm." << G4endl;
200 
201  G4cout << "radZ = " << radZ/mm << " mm" << G4endl;
202  G4cout << "startZ = " << startZ/mm<< " mm" << G4endl;
203 
204  G4cout << "fRadThick = " << radThick/mm << " mm"<<G4endl;
205  G4cout << "fFoilNumber = " << foilNumber << G4endl;
206  G4cout << "fRadiatorMat = " << radiatorMat->GetName() << G4endl;
207  G4cout << "WorldMaterial = " << worldMaterial->GetName() << G4endl;
208  G4cout << G4endl;
209 
210  return physicsWorld;
211 }
static constexpr double mm
Definition: G4SIunits.hh:115
CLHEP::Hep3Vector G4ThreeVector
void AddRootLogicalVolume(G4LogicalVolume *lv)
Definition: G4Region.cc:290
Definition: G4Box.hh:64
const G4String & GetName() const
Definition: G4Material.hh:178
G4double GetDensity() const
Definition: G4Material.hh:180
static Materials * GetInstance()
Definition: Materials.cc:52
G4GLOB_DLL std::ostream G4cout
static constexpr double cm
Definition: G4SIunits.hh:119
void AddNewDetector(G4VSensitiveDetector *aSD)
Definition: G4SDManager.cc:71
G4Material * GetMaterial(const G4String &)
Definition: Materials.cc:460
static G4SDManager * GetSDMpointer()
Definition: G4SDManager.cc:40
#define G4endl
Definition: G4ios.hh:61
double G4double
Definition: G4Types.hh:76
G4LogicalVolume * fLogicalVolume
static constexpr double micrometer
Definition: G4SIunits.hh:100
void SetSensitiveDetector(G4VSensitiveDetector *pSDetector)

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RadiatorDescription* DetectorWatase86::GetRadiatorDescription ( ) const
inline

Definition at line 53 of file DetectorWatase86.hh.

53 { return fRadiatorDescription; }

The documentation for this class was generated from the following files: