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26 // <<
27 /// \file optical/LXe/src/LXeMainVolume.cc <<
28 /// \brief Implementation of the LXeMainVolume <<
29 // <<
30 // <<
31 #include "LXeMainVolume.hh" 26 #include "LXeMainVolume.hh"
32 <<
33 #include "G4Box.hh" <<
34 #include "G4Colour.hh" <<
35 #include "G4LogicalBorderSurface.hh" <<
36 #include "G4LogicalSkinSurface.hh" <<
37 #include "G4LogicalVolume.hh" <<
38 #include "G4Material.hh" <<
39 #include "G4MaterialPropertiesTable.hh" <<
40 #include "G4OpticalSurface.hh" <<
41 #include "G4Sphere.hh" <<
42 #include "G4SystemOfUnits.hh" <<
43 #include "G4Tubs.hh" <<
44 #include "G4VisAttributes.hh" <<
45 #include "globals.hh" 27 #include "globals.hh"
>> 28 #include "G4SDManager.hh"
>> 29 #include "G4LogicalSkinSurface.hh"
>> 30 #include "G4LogicalBorderSurface.hh"
>> 31 #include "LXePMTSD.hh"
>> 32 #include "LXeScintSD.hh"
>> 33
>> 34 LXeScintSD* LXeMainVolume::scint_SD;
>> 35 LXePMTSD* LXeMainVolume::pmt_SD;
46 36
47 //....oooOO0OOooo........oooOO0OOooo........oo << 37 G4LogicalVolume* LXeMainVolume::housing_log=NULL;
48 38
49 LXeMainVolume::LXeMainVolume(G4RotationMatrix* << 39 LXeMainVolume::LXeMainVolume(G4RotationMatrix *pRot,
50 G4LogicalVolume* << 40 const G4ThreeVector &tlate,
51 LXeDetectorConstr << 41 G4LogicalVolume *pMotherLogical,
52 // Pass info to the G4PVPlacement constructo << 42 G4bool pMany,
53 : G4PVPlacement( << 43 G4int pCopyNo,
54 pRot, tlate, << 44 LXeDetectorConstruction* c)
55 // Temp logical volume must be created h << 45 //Pass info to the G4PVPlacement constructor
56 new G4LogicalVolume(new G4Box("temp", 1, << 46 :G4PVPlacement(pRot,tlate,
57 "housing", pMotherLogical, pMany, pCopyN << 47 //Temp logical volume must be created here
58 fConstructor(c) << 48 new G4LogicalVolume(new G4Box("temp",1,1,1),
>> 49 G4Material::GetMaterial("Vacuum"),
>> 50 "temp",0,0,0),
>> 51 "housing",pMotherLogical,pMany,pCopyNo),constructor(c)
59 { 52 {
60 CopyValues(); 53 CopyValues();
61 54
62 G4double housing_x = fScint_x + 2. * fD_mtl; << 55 if(!housing_log || updated){
63 G4double housing_y = fScint_y + 2. * fD_mtl; << 56
64 G4double housing_z = fScint_z + 2. * fD_mtl; << 57 G4double housing_x=scint_x+d_mtl;
65 << 58 G4double housing_y=scint_y+d_mtl;
66 //*************************** housing and sc << 59 G4double housing_z=scint_z+d_mtl;
67 fScint_box = new G4Box("scint_box", fScint_x << 60
68 fHousing_box = new G4Box("housing_box", hous << 61 //*************************** housing and scintillator
69 << 62 scint_box = new G4Box("scint_box",scint_x/2.,scint_y/2.,scint_z/2.);
70 fScint_log = new G4LogicalVolume(fScint_box, << 63 housing_box = new G4Box("housing_box",housing_x/2.,housing_y/2.,
71 fHousing_log = new G4LogicalVolume(fHousing_ << 64 housing_z/2.);
72 << 65
73 new G4PVPlacement(nullptr, G4ThreeVector(), << 66 scint_log = new G4LogicalVolume(scint_box,G4Material::GetMaterial("LXe"),
74 << 67 "scint_log",0,0,0);
75 //*************** Miscellaneous sphere to de << 68 housing_log = new G4LogicalVolume(housing_box,
76 fSphere = new G4Sphere("sphere", 0., 2. * cm << 69 G4Material::GetMaterial("Al"),
77 fSphere_log = new G4LogicalVolume(fSphere, G << 70 "housing_log",0,0,0);
78 if (fSphereOn) << 71
79 new G4PVPlacement(nullptr, G4ThreeVector(5 << 72
80 fScint_log, false, 0); << 73 scint_phys = new G4PVPlacement(0,G4ThreeVector(),scint_log,"scintillator",
81 << 74 housing_log,false,0);
82 //****************** Build PMTs << 75
83 G4double innerRadius_pmt = 0.; << 76 //*************** Miscellaneous sphere to demonstrate skin surfaces
84 G4double height_pmt = fD_mtl / 2.; << 77 sphere = new G4Sphere("sphere",0.*mm,2.*cm,0.*deg,360.*deg,0.*deg,
85 G4double startAngle_pmt = 0.; << 78 360.*deg);
86 G4double spanningAngle_pmt = 360. * deg; << 79 sphere_log = new G4LogicalVolume(sphere,G4Material::GetMaterial("Al"),
87 << 80 "sphere_log");
88 fPmt = new G4Tubs("pmt_tube", innerRadius_pm << 81 if(sphereOn)
89 spanningAngle_pmt); << 82 sphere_phys = new G4PVPlacement(0,G4ThreeVector(5.*cm,5.*cm,5.*cm),
90 << 83 sphere_log,"sphere",scint_log,false,0);
91 // the "photocathode" is a metal slab at the << 84
92 // is only a very rough approximation of the << 85
93 // absorbs or detects the photons based on t << 86 //****************** Build PMTs
94 fPhotocath = new G4Tubs("photocath_tube", in << 87 G4double innerRadius_pmt = 0.*cm;
95 startAngle_pmt, span << 88 G4double height_pmt = d_mtl/2.;
96 << 89 G4double startAngle_pmt = 0.*deg;
97 fPmt_log = new G4LogicalVolume(fPmt, G4Mater << 90 G4double spanningAngle_pmt = 360.*deg;
98 fPhotocath_log = new G4LogicalVolume(fPhotoc << 91
99 << 92 pmt = new G4Tubs("pmt_tube",innerRadius_pmt,outerRadius_pmt,
100 new G4PVPlacement(nullptr, G4ThreeVector(0., << 93 height_pmt,startAngle_pmt,spanningAngle_pmt);
101 fPmt_log, false, 0); << 94
102 << 95 //the "photocathode" is a metal slab at the back of the glass that
103 //***********Arrange pmts around the outside << 96 //is only a very rough approximation of the real thing since it only
104 << 97 //absorbs or detects the photons based on the efficiency set below
105 G4double dx = fScint_x / fNx; << 98 photocath = new G4Tubs("photocath_tube",innerRadius_pmt,outerRadius_pmt,
106 G4double dy = fScint_y / fNy; << 99 height_pmt/2,startAngle_pmt,spanningAngle_pmt);
107 G4double dz = fScint_z / fNz; << 100
108 << 101 pmt_log = new G4LogicalVolume(pmt,G4Material::GetMaterial("Glass"),
109 G4double x, y, z; << 102 "pmt_log");
110 G4double xmin = -fScint_x / 2. - dx / 2.; << 103 photocath_log = new G4LogicalVolume(photocath,
111 G4double ymin = -fScint_y / 2. - dy / 2.; << 104 G4Material::GetMaterial("Al"),
112 G4double zmin = -fScint_z / 2. - dz / 2.; << 105 "photocath_log");
113 G4int k = 0; << 106
114 << 107 photocath_phys = new G4PVPlacement(0,G4ThreeVector(0,0,-height_pmt/2),
115 z = -fScint_z / 2. - height_pmt; // front << 108 photocath_log,"photocath",
116 PlacePMTs(fPmt_log, nullptr, x, y, dx, dy, x << 109 pmt_log,false,0);
117 << 110
118 auto rm_z = new G4RotationMatrix(); << 111
119 rm_z->rotateY(180. * deg); << 112
120 z = fScint_z / 2. + height_pmt; // back << 113 //***********Arrange pmts around the outside of housing**********
121 PlacePMTs(fPmt_log, rm_z, x, y, dx, dy, xmin << 114 //---pmt sensitive detector
122 << 115 G4SDManager* SDman = G4SDManager::GetSDMpointer();
123 auto rm_y1 = new G4RotationMatrix(); << 116
124 rm_y1->rotateY(-90. * deg); << 117 if(!pmt_SD){
125 x = -fScint_x / 2. - height_pmt; // left << 118 pmt_SD = new LXePMTSD("/LXeDet/pmtSD");
126 PlacePMTs(fPmt_log, rm_y1, y, z, dy, dz, ymi << 119 SDman->AddNewDetector(pmt_SD);
127 << 120 //Created here so it exists as pmts are being placed
128 auto rm_y2 = new G4RotationMatrix(); << 121 }
129 rm_y2->rotateY(90. * deg); << 122 pmt_SD->InitPMTs((nx*ny+nx*nz+ny*nz)*2); //let pmtSD know # of pmts
130 x = fScint_x / 2. + height_pmt; // right << 123 //-------
131 PlacePMTs(fPmt_log, rm_y2, y, z, dy, dz, ymi << 124
132 << 125 G4double dx = scint_x/nx;
133 auto rm_x1 = new G4RotationMatrix(); << 126 G4double dy = scint_y/ny;
134 rm_x1->rotateX(90. * deg); << 127 G4double dz = scint_z/nz;
135 y = -fScint_y / 2. - height_pmt; // bottom << 128
136 PlacePMTs(fPmt_log, rm_x1, x, z, dx, dz, xmi << 129 G4double x,y,z;
137 << 130 G4double xmin = -scint_x/2. - dx/2.;
138 auto rm_x2 = new G4RotationMatrix(); << 131 G4double ymin = -scint_y/2. - dy/2.;
139 rm_x2->rotateX(-90. * deg); << 132 G4double zmin = -scint_z/2. - dz/2.;
140 y = fScint_y / 2. + height_pmt; // top << 133 G4int k=0;
141 PlacePMTs(fPmt_log, rm_x2, x, z, dx, dz, xmi << 134
>> 135 z = -scint_z/2. - height_pmt; //front
>> 136 PlacePMTs(pmt_log,0,x,y,dx,dy,xmin,ymin,nx,ny,x,y,z,k,pmt_SD);
>> 137 G4RotationMatrix* rm_z = new G4RotationMatrix();
>> 138 rm_z->rotateY(180*deg);
>> 139 z = scint_z/2. + height_pmt; //back
>> 140 PlacePMTs(pmt_log,rm_z,x,y,dx,dy,xmin,ymin,nx,ny,x,y,z,k,pmt_SD);
>> 141
>> 142 G4RotationMatrix* rm_y1 = new G4RotationMatrix();
>> 143 rm_y1->rotateY(-90*deg);
>> 144 x = -scint_x/2. - height_pmt; //left
>> 145 PlacePMTs(pmt_log,rm_y1,y,z,dy,dz,ymin,zmin,ny,nz,x,y,z,k,pmt_SD);
>> 146 G4RotationMatrix* rm_y2 = new G4RotationMatrix();
>> 147 rm_y2->rotateY(90*deg);
>> 148 x = scint_x/2. + height_pmt; //right
>> 149 PlacePMTs(pmt_log,rm_y2,y,z,dy,dz,ymin,zmin,ny,nz,x,y,z,k,pmt_SD);
>> 150
>> 151 G4RotationMatrix* rm_x1 = new G4RotationMatrix();
>> 152 rm_x1->rotateX(90*deg);
>> 153 y = -scint_y/2. - height_pmt; //bottom
>> 154 PlacePMTs(pmt_log,rm_x1,x,z,dx,dz,xmin,zmin,nx,nz,x,y,z,k,pmt_SD);
>> 155 G4RotationMatrix* rm_x2 = new G4RotationMatrix();
>> 156 rm_x2->rotateX(-90*deg);
>> 157 y = scint_y/2. + height_pmt; //top
>> 158 PlacePMTs(pmt_log,rm_x2,x,z,dx,dz,xmin,zmin,nx,nz,x,y,z,k,pmt_SD);
>> 159
>> 160 //**********Setup Sensitive Detectors***************
>> 161 if(!scint_SD){//determine if it has already been created
>> 162 scint_SD = new LXeScintSD("/LXeDet/scintSD");
>> 163 SDman->AddNewDetector(scint_SD);
>> 164 }
>> 165 scint_log->SetSensitiveDetector(scint_SD);
>> 166
>> 167 //sensitive detector is not actually on the photocathode.
>> 168 //processHits gets done manually by the stepping action.
>> 169 //It is used to detect when photons hit and get absorbed&detected at the
>> 170 //boundary to the photocathode (which doesnt get done by attaching it to a
>> 171 //logical volume.
>> 172 //It does however need to be attached to something or else it doesnt get
>> 173 //reset at the begining of events
>> 174 photocath_log->SetSensitiveDetector(pmt_SD);
142 175
143 VisAttributes(); << 176 VisAttributes();
144 SurfaceProperties(); << 177 SurfaceProperties();
>> 178 }
145 179
146 SetLogicalVolume(fHousing_log); << 180 SetLogicalVolume(housing_log);
147 } 181 }
148 182
149 //....oooOO0OOooo........oooOO0OOooo........oo << 183 void LXeMainVolume::CopyValues(){
>> 184 updated=constructor->GetUpdated();
150 185
151 void LXeMainVolume::CopyValues() << 186 scint_x=constructor->GetScintX();
152 { << 187 scint_y=constructor->GetScintY();
153 fScint_x = fConstructor->GetScintX(); << 188 scint_z=constructor->GetScintZ();
154 fScint_y = fConstructor->GetScintY(); << 189 d_mtl=constructor->GetHousingThickness();
155 fScint_z = fConstructor->GetScintZ(); << 190 nx=constructor->GetNX();
156 fD_mtl = fConstructor->GetHousingThickness() << 191 ny=constructor->GetNY();
157 fNx = fConstructor->GetNX(); << 192 nz=constructor->GetNZ();
158 fNy = fConstructor->GetNY(); << 193 outerRadius_pmt=constructor->GetPMTRadius();
159 fNz = fConstructor->GetNZ(); << 194 sphereOn=constructor->GetSphereOn();
160 fOuterRadius_pmt = fConstructor->GetPMTRadiu << 195 refl=constructor->GetHousingReflectivity();
161 fSphereOn = fConstructor->GetSphereOn(); <<
162 fRefl = fConstructor->GetHousingReflectivity <<
163 } 196 }
164 197
165 //....oooOO0OOooo........oooOO0OOooo........oo << 198 //_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
166 << 199 void LXeMainVolume::PlacePMTs(G4LogicalVolume* pmt_log,
167 void LXeMainVolume::PlacePMTs(G4LogicalVolume* << 200 G4RotationMatrix *rot,
168 G4double& b, G4d << 201 G4double &a, G4double &b, G4double da,
169 G4int na, G4int << 202 G4double db, G4double amin,
170 { << 203 G4double bmin, G4int na, G4int nb,
171 /* PlacePMTs : a different way to parameter << 204 G4double &x, G4double &y, G4double &z,
172 * on calculating the position from the copy << 205 G4int &k,LXePMTSD* sd){
173 * << 206 /*PlacePMTs : a different way to parameterize placement that does not depend on
174 * pmt_log = logical volume for pmts to be << 207 calculating the position from the copy number
175 * rot = rotation matrix to apply << 208
176 * a,b = coordinates to vary(ie. if varying << 209 pmt_log = logical volume for pmts to be placed
177 * da,db = value to increment a,b by << 210 rot = rotation matrix to apply
178 * amin,bmin = start values for a,b << 211 a,b = coordinates to vary(ie. if varying in the xy plane then pass x,y)
179 * na,nb = number of repitions in a and b << 212 da,db = value to increment a,b by
180 * x,y,z = just pass x,y, and z by referenc << 213 amin,bmin = start values for a,b
181 * k = copy number to start with << 214 na,nb = number of repitions in a and b
182 * sd = sensitive detector for pmts << 215 x,y,z = just pass x,y, and z by reference (the same ones passed for a,b)
183 */ << 216 k = copy number to start with
184 a = amin; << 217 sd = sensitive detector for pmts
185 for (G4int j = 1; j <= na; ++j) { << 218 */
186 a += da; << 219 a=amin;
187 b = bmin; << 220 for(G4int j=1;j<=na;j++){
188 for (G4int i = 1; i <= nb; ++i) { << 221 a+=da;
189 b += db; << 222 b=bmin;
190 new G4PVPlacement(rot, G4ThreeVector(x, << 223 for(G4int i=1;i<=nb;i++){
191 fPmtPositions.push_back(G4ThreeVector(x, << 224 b+=db;
192 ++k; << 225 new G4PVPlacement(rot,G4ThreeVector(x,y,z),pmt_log,"pmt",
>> 226 housing_log,false,k);
>> 227 sd->SetPMTPos(k,x,y,z);
>> 228 k++;
193 } 229 }
194 } 230 }
195 } 231 }
196 232
197 //....oooOO0OOooo........oooOO0OOooo........oo << 233 void LXeMainVolume::VisAttributes(){
>> 234 G4VisAttributes* housing_va = new G4VisAttributes(G4Colour(0.8,0.8,0.8));
>> 235 housing_log->SetVisAttributes(housing_va);
198 236
199 void LXeMainVolume::VisAttributes() << 237 G4VisAttributes* sphere_va = new G4VisAttributes();
200 { <<
201 auto housing_va = new G4VisAttributes(G4Colo <<
202 fHousing_log->SetVisAttributes(housing_va); <<
203 <<
204 auto sphere_va = new G4VisAttributes(); <<
205 sphere_va->SetForceSolid(true); 238 sphere_va->SetForceSolid(true);
206 fSphere_log->SetVisAttributes(sphere_va); << 239 sphere_log->SetVisAttributes(sphere_va);
207 } 240 }
208 241
209 //....oooOO0OOooo........oooOO0OOooo........oo << 242 void LXeMainVolume::SurfaceProperties(){
210 << 243 const G4int num = 2;
211 void LXeMainVolume::SurfaceProperties() << 244 G4double Ephoton[num] = {7.0*eV, 7.14*eV};
212 { << 245
213 std::vector<G4double> ephoton = {7.0 * eV, 7 << 246 //**Scintillator housing properties
214 << 247 G4double Reflectivity[num] = {refl, refl};
215 //**Scintillator housing properties << 248 G4double Efficiency[num] = {0.0, 0.0};
216 std::vector<G4double> reflectivity = {fRefl, << 249 G4MaterialPropertiesTable* scintHsngPT = new G4MaterialPropertiesTable();
217 std::vector<G4double> efficiency = {0.0, 0.0 << 250 scintHsngPT->AddProperty("REFLECTIVITY", Ephoton, Reflectivity, num);
218 auto scintHsngPT = new G4MaterialPropertiesT << 251 scintHsngPT->AddProperty("EFFICIENCY", Ephoton, Efficiency, num);
219 scintHsngPT->AddProperty("REFLECTIVITY", eph << 252 G4OpticalSurface* OpScintHousingSurface =
220 scintHsngPT->AddProperty("EFFICIENCY", ephot << 253 new G4OpticalSurface("HousingSurface",unified,polished,dielectric_metal);
221 auto OpScintHousingSurface = <<
222 new G4OpticalSurface("HousingSurface", uni <<
223 OpScintHousingSurface->SetMaterialProperties 254 OpScintHousingSurface->SetMaterialPropertiesTable(scintHsngPT);
224 << 255
225 //**Sphere surface properties 256 //**Sphere surface properties
226 std::vector<G4double> sphereReflectivity = { << 257 G4double SphereReflectivity[num] = {1.0, 1.0};
227 std::vector<G4double> sphereEfficiency = {0. << 258 G4double SphereEfficiency[num] = {0.0, 0.0};
228 auto spherePT = new G4MaterialPropertiesTabl << 259 G4MaterialPropertiesTable* spherePT = new G4MaterialPropertiesTable();
229 spherePT->AddProperty("REFLECTIVITY", ephoto << 260 spherePT->AddProperty("REFLECTIVITY", Ephoton, SphereReflectivity, num);
230 spherePT->AddProperty("EFFICIENCY", ephoton, << 261 spherePT->AddProperty("EFFICIENCY", Ephoton, SphereEfficiency, num);
231 auto OpSphereSurface = new G4OpticalSurface( << 262 G4OpticalSurface* OpSphereSurface =
>> 263 new G4OpticalSurface("SphereSurface",unified,polished,dielectric_metal);
232 OpSphereSurface->SetMaterialPropertiesTable( 264 OpSphereSurface->SetMaterialPropertiesTable(spherePT);
233 << 265
234 //**Photocathode surface properties 266 //**Photocathode surface properties
235 std::vector<G4double> photocath_EFF = {1., 1 << 267 G4double photocath_EFF[num]={1.,1.}; //Enables 'detection' of photons
236 std::vector<G4double> photocath_ReR = {1.92, << 268 G4double photocath_ReR[num]={1.92,1.92};
237 std::vector<G4double> photocath_ImR = {1.69, << 269 G4double photocath_ImR[num]={1.69,1.69};
238 auto photocath_mt = new G4MaterialProperties << 270 G4MaterialPropertiesTable* photocath_mt = new G4MaterialPropertiesTable();
239 photocath_mt->AddProperty("EFFICIENCY", epho << 271 photocath_mt->AddProperty("EFFICIENCY",Ephoton,photocath_EFF,num);
240 photocath_mt->AddProperty("REALRINDEX", epho << 272 photocath_mt->AddProperty("REALRINDEX",Ephoton,photocath_ReR,num);
241 photocath_mt->AddProperty("IMAGINARYRINDEX", << 273 photocath_mt->AddProperty("IMAGINARYRINDEX",Ephoton,photocath_ImR,num);
242 auto photocath_opsurf = << 274 G4OpticalSurface* photocath_opsurf=
243 new G4OpticalSurface("photocath_opsurf", g << 275 new G4OpticalSurface("photocath_opsurf",glisur,polished,
>> 276 dielectric_metal);
244 photocath_opsurf->SetMaterialPropertiesTable 277 photocath_opsurf->SetMaterialPropertiesTable(photocath_mt);
245 278
>> 279
246 //**Create logical skin surfaces 280 //**Create logical skin surfaces
247 new G4LogicalSkinSurface("photocath_surf", f << 281 new G4LogicalSkinSurface("photocath_surf",housing_log,
248 new G4LogicalSkinSurface("sphere_surface", f << 282 OpScintHousingSurface);
249 new G4LogicalSkinSurface("photocath_surf", f << 283 new G4LogicalSkinSurface("sphere_surface",sphere_log,OpSphereSurface);
>> 284 new G4LogicalSkinSurface("photocath_surf",photocath_log,photocath_opsurf);
250 } 285 }
>> 286
>> 287
>> 288
251 289