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26 // <<
27 /// \file optical/LXe/src/LXeMainVolume.cc 26 /// \file optical/LXe/src/LXeMainVolume.cc
28 /// \brief Implementation of the LXeMainVolume 27 /// \brief Implementation of the LXeMainVolume class
29 // 28 //
30 // 29 //
31 #include "LXeMainVolume.hh" 30 #include "LXeMainVolume.hh"
32 << 31 #include "globals.hh"
33 #include "G4Box.hh" << 32 #include "G4SDManager.hh"
34 #include "G4Colour.hh" <<
35 #include "G4LogicalBorderSurface.hh" <<
36 #include "G4LogicalSkinSurface.hh" 33 #include "G4LogicalSkinSurface.hh"
37 #include "G4LogicalVolume.hh" << 34 #include "G4LogicalBorderSurface.hh"
38 #include "G4Material.hh" << 35 #include "LXePMTSD.hh"
39 #include "G4MaterialPropertiesTable.hh" << 36 #include "LXeScintSD.hh"
40 #include "G4OpticalSurface.hh" <<
41 #include "G4Sphere.hh" <<
42 #include "G4SystemOfUnits.hh" 37 #include "G4SystemOfUnits.hh"
43 #include "G4Tubs.hh" << 38
44 #include "G4VisAttributes.hh" << 39 LXeScintSD* LXeMainVolume::fScint_SD=NULL;
45 #include "globals.hh" << 40 LXePMTSD* LXeMainVolume::fPmt_SD=NULL;
>> 41
>> 42 G4LogicalVolume* LXeMainVolume::fHousing_log=NULL;
46 43
47 //....oooOO0OOooo........oooOO0OOooo........oo 44 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
48 45
49 LXeMainVolume::LXeMainVolume(G4RotationMatrix* << 46 LXeMainVolume::LXeMainVolume(G4RotationMatrix *pRot,
50 G4LogicalVolume* << 47 const G4ThreeVector &tlate,
>> 48 G4LogicalVolume *pMotherLogical,
>> 49 G4bool pMany,
>> 50 G4int pCopyNo,
51 LXeDetectorConstr 51 LXeDetectorConstruction* c)
52 // Pass info to the G4PVPlacement constructo << 52 //Pass info to the G4PVPlacement constructor
53 : G4PVPlacement( << 53 :G4PVPlacement(pRot,tlate,
54 pRot, tlate, << 54 //Temp logical volume must be created here
55 // Temp logical volume must be created h << 55 new G4LogicalVolume(new G4Box("temp",1,1,1),
56 new G4LogicalVolume(new G4Box("temp", 1, << 56 G4Material::GetMaterial("Vacuum"),
57 "housing", pMotherLogical, pMany, pCopyN << 57 "temp",0,0,0),
58 fConstructor(c) << 58 "housing",pMotherLogical,pMany,pCopyNo),fConstructor(c)
59 { 59 {
60 CopyValues(); 60 CopyValues();
61 61
62 G4double housing_x = fScint_x + 2. * fD_mtl; << 62 if(!fHousing_log || fUpdated){
63 G4double housing_y = fScint_y + 2. * fD_mtl; << 63
64 G4double housing_z = fScint_z + 2. * fD_mtl; << 64 G4double housing_x=fScint_x+fD_mtl;
65 << 65 G4double housing_y=fScint_y+fD_mtl;
66 //*************************** housing and sc << 66 G4double housing_z=fScint_z+fD_mtl;
67 fScint_box = new G4Box("scint_box", fScint_x << 67
68 fHousing_box = new G4Box("housing_box", hous << 68 //*************************** housing and scintillator
69 << 69 fScint_box = new G4Box("scint_box",fScint_x/2.,fScint_y/2.,fScint_z/2.);
70 fScint_log = new G4LogicalVolume(fScint_box, << 70 fHousing_box = new G4Box("housing_box",housing_x/2.,housing_y/2.,
71 fHousing_log = new G4LogicalVolume(fHousing_ << 71 housing_z/2.);
72 << 72
73 new G4PVPlacement(nullptr, G4ThreeVector(), << 73 fScint_log = new G4LogicalVolume(fScint_box,G4Material::GetMaterial("LXe"),
74 << 74 "scint_log",0,0,0);
75 //*************** Miscellaneous sphere to de << 75 fHousing_log = new G4LogicalVolume(fHousing_box,
76 fSphere = new G4Sphere("sphere", 0., 2. * cm << 76 G4Material::GetMaterial("Al"),
77 fSphere_log = new G4LogicalVolume(fSphere, G << 77 "housing_log",0,0,0);
78 if (fSphereOn) << 78
79 new G4PVPlacement(nullptr, G4ThreeVector(5 << 79 new G4PVPlacement(0,G4ThreeVector(),fScint_log,"scintillator",
80 fScint_log, false, 0); << 80 fHousing_log,false,0);
81 << 81
82 //****************** Build PMTs << 82 //*************** Miscellaneous sphere to demonstrate skin surfaces
83 G4double innerRadius_pmt = 0.; << 83 fSphere = new G4Sphere("sphere",0.*mm,2.*cm,0.*deg,360.*deg,0.*deg,
84 G4double height_pmt = fD_mtl / 2.; << 84 360.*deg);
85 G4double startAngle_pmt = 0.; << 85 fSphere_log = new G4LogicalVolume(fSphere,G4Material::GetMaterial("Al"),
86 G4double spanningAngle_pmt = 360. * deg; << 86 "sphere_log");
87 << 87 if(fSphereOn)
88 fPmt = new G4Tubs("pmt_tube", innerRadius_pm << 88 new G4PVPlacement(0,G4ThreeVector(5.*cm,5.*cm,5.*cm),
89 spanningAngle_pmt); << 89 fSphere_log,"sphere",fScint_log,false,0);
90 << 90
91 // the "photocathode" is a metal slab at the << 91 //****************** Build PMTs
92 // is only a very rough approximation of the << 92 G4double innerRadius_pmt = 0.*cm;
93 // absorbs or detects the photons based on t << 93 G4double height_pmt = fD_mtl/2.;
94 fPhotocath = new G4Tubs("photocath_tube", in << 94 G4double startAngle_pmt = 0.*deg;
95 startAngle_pmt, span << 95 G4double spanningAngle_pmt = 360.*deg;
96 << 96
97 fPmt_log = new G4LogicalVolume(fPmt, G4Mater << 97 fPmt = new G4Tubs("pmt_tube",innerRadius_pmt,fOuterRadius_pmt,
98 fPhotocath_log = new G4LogicalVolume(fPhotoc << 98 height_pmt,startAngle_pmt,spanningAngle_pmt);
99 << 99
100 new G4PVPlacement(nullptr, G4ThreeVector(0., << 100 //the "photocathode" is a metal slab at the back of the glass that
101 fPmt_log, false, 0); << 101 //is only a very rough approximation of the real thing since it only
102 << 102 //absorbs or detects the photons based on the efficiency set below
103 //***********Arrange pmts around the outside << 103 fPhotocath = new G4Tubs("photocath_tube",innerRadius_pmt,fOuterRadius_pmt,
104 << 104 height_pmt/2,startAngle_pmt,spanningAngle_pmt);
105 G4double dx = fScint_x / fNx; << 105
106 G4double dy = fScint_y / fNy; << 106 fPmt_log = new G4LogicalVolume(fPmt,G4Material::GetMaterial("Glass"),
107 G4double dz = fScint_z / fNz; << 107 "pmt_log");
108 << 108 fPhotocath_log = new G4LogicalVolume(fPhotocath,
109 G4double x, y, z; << 109 G4Material::GetMaterial("Al"),
110 G4double xmin = -fScint_x / 2. - dx / 2.; << 110 "photocath_log");
111 G4double ymin = -fScint_y / 2. - dy / 2.; << 111
112 G4double zmin = -fScint_z / 2. - dz / 2.; << 112 new G4PVPlacement(0,G4ThreeVector(0,0,-height_pmt/2),
113 G4int k = 0; << 113 fPhotocath_log,"photocath",
114 << 114 fPmt_log,false,0);
115 z = -fScint_z / 2. - height_pmt; // front << 115
116 PlacePMTs(fPmt_log, nullptr, x, y, dx, dy, x << 116 //***********Arrange pmts around the outside of housing**********
117 << 117 //---pmt sensitive detector
118 auto rm_z = new G4RotationMatrix(); << 118 G4SDManager* SDman = G4SDManager::GetSDMpointer();
119 rm_z->rotateY(180. * deg); << 119
120 z = fScint_z / 2. + height_pmt; // back << 120 if(!fPmt_SD){
121 PlacePMTs(fPmt_log, rm_z, x, y, dx, dy, xmin << 121 fPmt_SD = new LXePMTSD("/LXeDet/pmtSD");
122 << 122 SDman->AddNewDetector(fPmt_SD);
123 auto rm_y1 = new G4RotationMatrix(); << 123 //Created here so it exists as pmts are being placed
124 rm_y1->rotateY(-90. * deg); << 124 }
125 x = -fScint_x / 2. - height_pmt; // left << 125 fPmt_SD->InitPMTs((fNx*fNy+fNx*fNz+fNy*fNz)*2); //let pmtSD know # of pmts
126 PlacePMTs(fPmt_log, rm_y1, y, z, dy, dz, ymi << 126 //-------
127 << 127
128 auto rm_y2 = new G4RotationMatrix(); << 128 G4double dx = fScint_x/fNx;
129 rm_y2->rotateY(90. * deg); << 129 G4double dy = fScint_y/fNy;
130 x = fScint_x / 2. + height_pmt; // right << 130 G4double dz = fScint_z/fNz;
131 PlacePMTs(fPmt_log, rm_y2, y, z, dy, dz, ymi << 131
132 << 132 G4double x,y,z;
133 auto rm_x1 = new G4RotationMatrix(); << 133 G4double xmin = -fScint_x/2. - dx/2.;
134 rm_x1->rotateX(90. * deg); << 134 G4double ymin = -fScint_y/2. - dy/2.;
135 y = -fScint_y / 2. - height_pmt; // bottom << 135 G4double zmin = -fScint_z/2. - dz/2.;
136 PlacePMTs(fPmt_log, rm_x1, x, z, dx, dz, xmi << 136 G4int k=0;
137 << 137
138 auto rm_x2 = new G4RotationMatrix(); << 138 z = -fScint_z/2. - height_pmt; //front
139 rm_x2->rotateX(-90. * deg); << 139 PlacePMTs(fPmt_log,0,x,y,dx,dy,xmin,ymin,fNx,fNy,x,y,z,k,fPmt_SD);
140 y = fScint_y / 2. + height_pmt; // top << 140 G4RotationMatrix* rm_z = new G4RotationMatrix();
141 PlacePMTs(fPmt_log, rm_x2, x, z, dx, dz, xmi << 141 rm_z->rotateY(180*deg);
>> 142 z = fScint_z/2. + height_pmt; //back
>> 143 PlacePMTs(fPmt_log,rm_z,x,y,dx,dy,xmin,ymin,fNx,fNy,x,y,z,k,fPmt_SD);
>> 144
>> 145 G4RotationMatrix* rm_y1 = new G4RotationMatrix();
>> 146 rm_y1->rotateY(-90*deg);
>> 147 x = -fScint_x/2. - height_pmt; //left
>> 148 PlacePMTs(fPmt_log,rm_y1,y,z,dy,dz,ymin,zmin,fNy,fNz,x,y,z,k,fPmt_SD);
>> 149 G4RotationMatrix* rm_y2 = new G4RotationMatrix();
>> 150 rm_y2->rotateY(90*deg);
>> 151 x = fScint_x/2. + height_pmt; //right
>> 152 PlacePMTs(fPmt_log,rm_y2,y,z,dy,dz,ymin,zmin,fNy,fNz,x,y,z,k,fPmt_SD);
>> 153
>> 154 G4RotationMatrix* rm_x1 = new G4RotationMatrix();
>> 155 rm_x1->rotateX(90*deg);
>> 156 y = -fScint_y/2. - height_pmt; //bottom
>> 157 PlacePMTs(fPmt_log,rm_x1,x,z,dx,dz,xmin,zmin,fNx,fNz,x,y,z,k,fPmt_SD);
>> 158 G4RotationMatrix* rm_x2 = new G4RotationMatrix();
>> 159 rm_x2->rotateX(-90*deg);
>> 160 y = fScint_y/2. + height_pmt; //top
>> 161 PlacePMTs(fPmt_log,rm_x2,x,z,dx,dz,xmin,zmin,fNx,fNz,x,y,z,k,fPmt_SD);
>> 162
>> 163 //**********Setup Sensitive Detectors***************
>> 164 if(!fScint_SD){//determine if it has already been created
>> 165 fScint_SD = new LXeScintSD("/LXeDet/scintSD");
>> 166 SDman->AddNewDetector(fScint_SD);
>> 167 }
>> 168 fScint_log->SetSensitiveDetector(fScint_SD);
>> 169
>> 170 //sensitive detector is not actually on the photocathode.
>> 171 //processHits gets done manually by the stepping action.
>> 172 //It is used to detect when photons hit and get absorbed&detected at the
>> 173 //boundary to the photocathode (which doesnt get done by attaching it to a
>> 174 //logical volume.
>> 175 //It does however need to be attached to something or else it doesnt get
>> 176 //reset at the begining of events
>> 177 fPhotocath_log->SetSensitiveDetector(fPmt_SD);
142 178
143 VisAttributes(); << 179 VisAttributes();
144 SurfaceProperties(); << 180 SurfaceProperties();
>> 181 }
145 182
146 SetLogicalVolume(fHousing_log); 183 SetLogicalVolume(fHousing_log);
147 } 184 }
148 185
149 //....oooOO0OOooo........oooOO0OOooo........oo 186 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
150 187
151 void LXeMainVolume::CopyValues() << 188 void LXeMainVolume::CopyValues(){
152 { << 189 fUpdated=fConstructor->GetUpdated();
153 fScint_x = fConstructor->GetScintX(); << 190
154 fScint_y = fConstructor->GetScintY(); << 191 fScint_x=fConstructor->GetScintX();
155 fScint_z = fConstructor->GetScintZ(); << 192 fScint_y=fConstructor->GetScintY();
156 fD_mtl = fConstructor->GetHousingThickness() << 193 fScint_z=fConstructor->GetScintZ();
157 fNx = fConstructor->GetNX(); << 194 fD_mtl=fConstructor->GetHousingThickness();
158 fNy = fConstructor->GetNY(); << 195 fNx=fConstructor->GetNX();
159 fNz = fConstructor->GetNZ(); << 196 fNy=fConstructor->GetNY();
160 fOuterRadius_pmt = fConstructor->GetPMTRadiu << 197 fNz=fConstructor->GetNZ();
161 fSphereOn = fConstructor->GetSphereOn(); << 198 fOuterRadius_pmt=fConstructor->GetPMTRadius();
162 fRefl = fConstructor->GetHousingReflectivity << 199 fSphereOn=fConstructor->GetSphereOn();
>> 200 fRefl=fConstructor->GetHousingReflectivity();
163 } 201 }
164 202
165 //....oooOO0OOooo........oooOO0OOooo........oo 203 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
166 204
167 void LXeMainVolume::PlacePMTs(G4LogicalVolume* << 205 void LXeMainVolume::PlacePMTs(G4LogicalVolume* pmt_log,
168 G4double& b, G4d << 206 G4RotationMatrix *rot,
169 G4int na, G4int << 207 G4double &a, G4double &b, G4double da,
170 { << 208 G4double db, G4double amin,
171 /* PlacePMTs : a different way to parameter << 209 G4double bmin, G4int na, G4int nb,
172 * on calculating the position from the copy << 210 G4double &x, G4double &y, G4double &z,
173 * << 211 G4int &k,LXePMTSD* sd){
174 * pmt_log = logical volume for pmts to be << 212 /*PlacePMTs : a different way to parameterize placement that does not depend on
175 * rot = rotation matrix to apply << 213 calculating the position from the copy number
176 * a,b = coordinates to vary(ie. if varying << 214
177 * da,db = value to increment a,b by << 215 pmt_log = logical volume for pmts to be placed
178 * amin,bmin = start values for a,b << 216 rot = rotation matrix to apply
179 * na,nb = number of repitions in a and b << 217 a,b = coordinates to vary(ie. if varying in the xy plane then pass x,y)
180 * x,y,z = just pass x,y, and z by referenc << 218 da,db = value to increment a,b by
181 * k = copy number to start with << 219 amin,bmin = start values for a,b
182 * sd = sensitive detector for pmts << 220 na,nb = number of repitions in a and b
183 */ << 221 x,y,z = just pass x,y, and z by reference (the same ones passed for a,b)
184 a = amin; << 222 k = copy number to start with
185 for (G4int j = 1; j <= na; ++j) { << 223 sd = sensitive detector for pmts
186 a += da; << 224 */
187 b = bmin; << 225 a=amin;
188 for (G4int i = 1; i <= nb; ++i) { << 226 for(G4int j=1;j<=na;j++){
189 b += db; << 227 a+=da;
190 new G4PVPlacement(rot, G4ThreeVector(x, << 228 b=bmin;
191 fPmtPositions.push_back(G4ThreeVector(x, << 229 for(G4int i=1;i<=nb;i++){
192 ++k; << 230 b+=db;
>> 231 new G4PVPlacement(rot,G4ThreeVector(x,y,z),pmt_log,"pmt",
>> 232 fHousing_log,false,k);
>> 233 sd->SetPMTPos(k,x,y,z);
>> 234 k++;
193 } 235 }
194 } 236 }
195 } 237 }
196 238
197 //....oooOO0OOooo........oooOO0OOooo........oo 239 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
198 240
199 void LXeMainVolume::VisAttributes() << 241 void LXeMainVolume::VisAttributes(){
200 { << 242 G4VisAttributes* housing_va = new G4VisAttributes(G4Colour(0.8,0.8,0.8));
201 auto housing_va = new G4VisAttributes(G4Colo <<
202 fHousing_log->SetVisAttributes(housing_va); 243 fHousing_log->SetVisAttributes(housing_va);
203 244
204 auto sphere_va = new G4VisAttributes(); << 245 G4VisAttributes* sphere_va = new G4VisAttributes();
205 sphere_va->SetForceSolid(true); 246 sphere_va->SetForceSolid(true);
206 fSphere_log->SetVisAttributes(sphere_va); 247 fSphere_log->SetVisAttributes(sphere_va);
207 } 248 }
208 249
209 //....oooOO0OOooo........oooOO0OOooo........oo 250 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
210 251
211 void LXeMainVolume::SurfaceProperties() << 252 void LXeMainVolume::SurfaceProperties(){
212 { << 253 const G4int num = 2;
213 std::vector<G4double> ephoton = {7.0 * eV, 7 << 254 G4double ephoton[num] = {7.0*eV, 7.14*eV};
214 255
215 //**Scintillator housing properties 256 //**Scintillator housing properties
216 std::vector<G4double> reflectivity = {fRefl, << 257 G4double reflectivity[num] = {fRefl, fRefl};
217 std::vector<G4double> efficiency = {0.0, 0.0 << 258 G4double efficiency[num] = {0.0, 0.0};
218 auto scintHsngPT = new G4MaterialPropertiesT << 259 G4MaterialPropertiesTable* scintHsngPT = new G4MaterialPropertiesTable();
219 scintHsngPT->AddProperty("REFLECTIVITY", eph << 260 scintHsngPT->AddProperty("REFLECTIVITY", ephoton, reflectivity, num);
220 scintHsngPT->AddProperty("EFFICIENCY", ephot << 261 scintHsngPT->AddProperty("EFFICIENCY", ephoton, efficiency, num);
221 auto OpScintHousingSurface = << 262 G4OpticalSurface* OpScintHousingSurface =
222 new G4OpticalSurface("HousingSurface", uni << 263 new G4OpticalSurface("HousingSurface",unified,polished,dielectric_metal);
223 OpScintHousingSurface->SetMaterialProperties 264 OpScintHousingSurface->SetMaterialPropertiesTable(scintHsngPT);
224 << 265
225 //**Sphere surface properties 266 //**Sphere surface properties
226 std::vector<G4double> sphereReflectivity = { << 267 G4double sphereReflectivity[num] = {1.0, 1.0};
227 std::vector<G4double> sphereEfficiency = {0. << 268 G4double sphereEfficiency[num] = {0.0, 0.0};
228 auto spherePT = new G4MaterialPropertiesTabl << 269 G4MaterialPropertiesTable* spherePT = new G4MaterialPropertiesTable();
229 spherePT->AddProperty("REFLECTIVITY", ephoto << 270 spherePT->AddProperty("REFLECTIVITY", ephoton, sphereReflectivity, num);
230 spherePT->AddProperty("EFFICIENCY", ephoton, << 271 spherePT->AddProperty("EFFICIENCY", ephoton, sphereEfficiency, num);
231 auto OpSphereSurface = new G4OpticalSurface( << 272 G4OpticalSurface* OpSphereSurface =
>> 273 new G4OpticalSurface("SphereSurface",unified,polished,dielectric_metal);
232 OpSphereSurface->SetMaterialPropertiesTable( 274 OpSphereSurface->SetMaterialPropertiesTable(spherePT);
233 << 275
234 //**Photocathode surface properties 276 //**Photocathode surface properties
235 std::vector<G4double> photocath_EFF = {1., 1 << 277 G4double photocath_EFF[num]={1.,1.}; //Enables 'detection' of photons
236 std::vector<G4double> photocath_ReR = {1.92, << 278 G4double photocath_ReR[num]={1.92,1.92};
237 std::vector<G4double> photocath_ImR = {1.69, << 279 G4double photocath_ImR[num]={1.69,1.69};
238 auto photocath_mt = new G4MaterialProperties << 280 G4MaterialPropertiesTable* photocath_mt = new G4MaterialPropertiesTable();
239 photocath_mt->AddProperty("EFFICIENCY", epho << 281 photocath_mt->AddProperty("EFFICIENCY",ephoton,photocath_EFF,num);
240 photocath_mt->AddProperty("REALRINDEX", epho << 282 photocath_mt->AddProperty("REALRINDEX",ephoton,photocath_ReR,num);
241 photocath_mt->AddProperty("IMAGINARYRINDEX", << 283 photocath_mt->AddProperty("IMAGINARYRINDEX",ephoton,photocath_ImR,num);
242 auto photocath_opsurf = << 284 G4OpticalSurface* photocath_opsurf=
243 new G4OpticalSurface("photocath_opsurf", g << 285 new G4OpticalSurface("photocath_opsurf",glisur,polished,
>> 286 dielectric_metal);
244 photocath_opsurf->SetMaterialPropertiesTable 287 photocath_opsurf->SetMaterialPropertiesTable(photocath_mt);
245 288
246 //**Create logical skin surfaces 289 //**Create logical skin surfaces
247 new G4LogicalSkinSurface("photocath_surf", f << 290 new G4LogicalSkinSurface("photocath_surf",fHousing_log,
248 new G4LogicalSkinSurface("sphere_surface", f << 291 OpScintHousingSurface);
249 new G4LogicalSkinSurface("photocath_surf", f << 292 new G4LogicalSkinSurface("sphere_surface",fSphere_log,OpSphereSurface);
>> 293 new G4LogicalSkinSurface("photocath_surf",fPhotocath_log,photocath_opsurf);
250 } 294 }
251 295