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26 // <<
27 /// \file optical/LXe/src/LXeMainVolume.cc <<
28 /// \brief Implementation of the LXeMainVolume <<
29 // <<
30 // <<
31 #include "LXeMainVolume.hh" 23 #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" 24 #include "globals.hh"
>> 25 #include "G4SDManager.hh"
>> 26 #include "G4LogicalSkinSurface.hh"
>> 27 #include "G4LogicalBorderSurface.hh"
>> 28 #include "LXePMTSD.hh"
>> 29 #include "LXeScintSD.hh"
>> 30
>> 31 LXeScintSD* LXeMainVolume::scint_SD;
>> 32 LXePMTSD* LXeMainVolume::pmt_SD;
46 33
47 //....oooOO0OOooo........oooOO0OOooo........oo << 34 G4LogicalVolume* LXeMainVolume::housing_log=NULL;
48 35
49 LXeMainVolume::LXeMainVolume(G4RotationMatrix* << 36 LXeMainVolume::LXeMainVolume(G4RotationMatrix *pRot,
50 G4LogicalVolume* << 37 const G4ThreeVector &tlate,
51 LXeDetectorConstr << 38 G4LogicalVolume *pMotherLogical,
52 // Pass info to the G4PVPlacement constructo << 39 G4bool pMany,
53 : G4PVPlacement( << 40 G4int pCopyNo,
54 pRot, tlate, << 41 LXeDetectorConstruction* c)
55 // Temp logical volume must be created h << 42 //Pass info to the G4PVPlacement constructor
56 new G4LogicalVolume(new G4Box("temp", 1, << 43 :G4PVPlacement(pRot,tlate,
57 "housing", pMotherLogical, pMany, pCopyN << 44 //Temp logical volume must be created here
58 fConstructor(c) << 45 new G4LogicalVolume(new G4Box("temp",1,1,1),
>> 46 G4Material::GetMaterial("Vacuum"),
>> 47 "temp",0,0,0),
>> 48 "housing",pMotherLogical,pMany,pCopyNo),constructor(c)
59 { 49 {
60 CopyValues(); 50 CopyValues();
61 51
62 G4double housing_x = fScint_x + 2. * fD_mtl; << 52 if(!housing_log || updated){
63 G4double housing_y = fScint_y + 2. * fD_mtl; << 53
64 G4double housing_z = fScint_z + 2. * fD_mtl; << 54 G4double housing_x=scint_x+d_mtl;
65 << 55 G4double housing_y=scint_y+d_mtl;
66 //*************************** housing and sc << 56 G4double housing_z=scint_z+d_mtl;
67 fScint_box = new G4Box("scint_box", fScint_x << 57
68 fHousing_box = new G4Box("housing_box", hous << 58 //*************************** housing and scintillator
69 << 59 scint_box = new G4Box("scint_box",scint_x/2.,scint_y/2.,scint_z/2.);
70 fScint_log = new G4LogicalVolume(fScint_box, << 60 housing_box = new G4Box("housing_box",housing_x/2.,housing_y/2.,
71 fHousing_log = new G4LogicalVolume(fHousing_ << 61 housing_z/2.);
72 << 62
73 new G4PVPlacement(nullptr, G4ThreeVector(), << 63 scint_log = new G4LogicalVolume(scint_box,G4Material::GetMaterial("LXe"),
74 << 64 "scint_log",0,0,0);
75 //*************** Miscellaneous sphere to de << 65 housing_log = new G4LogicalVolume(housing_box,
76 fSphere = new G4Sphere("sphere", 0., 2. * cm << 66 G4Material::GetMaterial("Al"),
77 fSphere_log = new G4LogicalVolume(fSphere, G << 67 "housing_log",0,0,0);
78 if (fSphereOn) << 68
79 new G4PVPlacement(nullptr, G4ThreeVector(5 << 69
80 fScint_log, false, 0); << 70 scint_phys = new G4PVPlacement(0,G4ThreeVector(),scint_log,"scintillator",
81 << 71 housing_log,false,0);
82 //****************** Build PMTs << 72
83 G4double innerRadius_pmt = 0.; << 73 //*************** Miscellaneous sphere to demonstrate skin surfaces
84 G4double height_pmt = fD_mtl / 2.; << 74 sphere = new G4Sphere("sphere",0.*mm,2.*cm,0.*deg,360.*deg,0.*deg,
85 G4double startAngle_pmt = 0.; << 75 360.*deg);
86 G4double spanningAngle_pmt = 360. * deg; << 76 sphere_log = new G4LogicalVolume(sphere,G4Material::GetMaterial("Al"),
87 << 77 "sphere_log");
88 fPmt = new G4Tubs("pmt_tube", innerRadius_pm << 78 if(sphereOn)
89 spanningAngle_pmt); << 79 sphere_phys = new G4PVPlacement(0,G4ThreeVector(5.*cm,5.*cm,5.*cm),
90 << 80 sphere_log,"sphere",scint_log,false,0);
91 // the "photocathode" is a metal slab at the << 81
92 // is only a very rough approximation of the << 82
93 // absorbs or detects the photons based on t << 83 //****************** Build PMTs
94 fPhotocath = new G4Tubs("photocath_tube", in << 84 G4double innerRadius_pmt = 0.*cm;
95 startAngle_pmt, span << 85 G4double height_pmt = d_mtl/2.;
96 << 86 G4double startAngle_pmt = 0.*deg;
97 fPmt_log = new G4LogicalVolume(fPmt, G4Mater << 87 G4double spanningAngle_pmt = 360.*deg;
98 fPhotocath_log = new G4LogicalVolume(fPhotoc << 88
99 << 89 pmt = new G4Tubs("pmt_tube",innerRadius_pmt,outerRadius_pmt,
100 new G4PVPlacement(nullptr, G4ThreeVector(0., << 90 height_pmt,startAngle_pmt,spanningAngle_pmt);
101 fPmt_log, false, 0); << 91
102 << 92 //the "photocathode" is a metal slab at the back of the glass that
103 //***********Arrange pmts around the outside << 93 //is only a very rough approximation of the real thing since it only
104 << 94 //absorbs or detects the photons based on the efficiency set below
105 G4double dx = fScint_x / fNx; << 95 photocath = new G4Tubs("photocath_tube",innerRadius_pmt,outerRadius_pmt,
106 G4double dy = fScint_y / fNy; << 96 height_pmt/2,startAngle_pmt,spanningAngle_pmt);
107 G4double dz = fScint_z / fNz; << 97
108 << 98 pmt_log = new G4LogicalVolume(pmt,G4Material::GetMaterial("Glass"),
109 G4double x, y, z; << 99 "pmt_log");
110 G4double xmin = -fScint_x / 2. - dx / 2.; << 100 photocath_log = new G4LogicalVolume(photocath,
111 G4double ymin = -fScint_y / 2. - dy / 2.; << 101 G4Material::GetMaterial("Al"),
112 G4double zmin = -fScint_z / 2. - dz / 2.; << 102 "photocath_log");
113 G4int k = 0; << 103
114 << 104 photocath_phys = new G4PVPlacement(0,G4ThreeVector(0,0,-height_pmt/2),
115 z = -fScint_z / 2. - height_pmt; // front << 105 photocath_log,"photocath",
116 PlacePMTs(fPmt_log, nullptr, x, y, dx, dy, x << 106 pmt_log,false,0);
117 << 107
118 auto rm_z = new G4RotationMatrix(); << 108
119 rm_z->rotateY(180. * deg); << 109
120 z = fScint_z / 2. + height_pmt; // back << 110 //***********Arrange pmts around the outside of housing**********
121 PlacePMTs(fPmt_log, rm_z, x, y, dx, dy, xmin << 111 //---pmt sensitive detector
122 << 112 G4SDManager* SDman = G4SDManager::GetSDMpointer();
123 auto rm_y1 = new G4RotationMatrix(); << 113
124 rm_y1->rotateY(-90. * deg); << 114 if(!pmt_SD){
125 x = -fScint_x / 2. - height_pmt; // left << 115 pmt_SD = new LXePMTSD("/LXeDet/pmtSD");
126 PlacePMTs(fPmt_log, rm_y1, y, z, dy, dz, ymi << 116 SDman->AddNewDetector(pmt_SD);
127 << 117 //Created here so it exists as pmts are being placed
128 auto rm_y2 = new G4RotationMatrix(); << 118 }
129 rm_y2->rotateY(90. * deg); << 119 pmt_SD->InitPMTs((nx*ny+nx*nz+ny*nz)*2); //let pmtSD know # of pmts
130 x = fScint_x / 2. + height_pmt; // right << 120 //-------
131 PlacePMTs(fPmt_log, rm_y2, y, z, dy, dz, ymi << 121
132 << 122 G4double dx = scint_x/nx;
133 auto rm_x1 = new G4RotationMatrix(); << 123 G4double dy = scint_y/ny;
134 rm_x1->rotateX(90. * deg); << 124 G4double dz = scint_z/nz;
135 y = -fScint_y / 2. - height_pmt; // bottom << 125
136 PlacePMTs(fPmt_log, rm_x1, x, z, dx, dz, xmi << 126 G4double x,y,z;
137 << 127 G4double xmin = -scint_x/2. - dx/2.;
138 auto rm_x2 = new G4RotationMatrix(); << 128 G4double ymin = -scint_y/2. - dy/2.;
139 rm_x2->rotateX(-90. * deg); << 129 G4double zmin = -scint_z/2. - dz/2.;
140 y = fScint_y / 2. + height_pmt; // top << 130 G4int k=0;
141 PlacePMTs(fPmt_log, rm_x2, x, z, dx, dz, xmi << 131
>> 132 z = -scint_z/2. - height_pmt; //front
>> 133 PlacePMTs(pmt_log,0,x,y,dx,dy,xmin,ymin,nx,ny,x,y,z,k,pmt_SD);
>> 134 G4RotationMatrix* rm_z = new G4RotationMatrix();
>> 135 rm_z->rotateY(180*deg);
>> 136 z = scint_z/2. + height_pmt; //back
>> 137 PlacePMTs(pmt_log,rm_z,x,y,dx,dy,xmin,ymin,nx,ny,x,y,z,k,pmt_SD);
>> 138
>> 139 G4RotationMatrix* rm_y1 = new G4RotationMatrix();
>> 140 rm_y1->rotateY(-90*deg);
>> 141 x = -scint_x/2. - height_pmt; //left
>> 142 PlacePMTs(pmt_log,rm_y1,y,z,dy,dz,ymin,zmin,ny,nz,x,y,z,k,pmt_SD);
>> 143 G4RotationMatrix* rm_y2 = new G4RotationMatrix();
>> 144 rm_y2->rotateY(90*deg);
>> 145 x = scint_x/2. + height_pmt; //right
>> 146 PlacePMTs(pmt_log,rm_y2,y,z,dy,dz,ymin,zmin,ny,nz,x,y,z,k,pmt_SD);
>> 147
>> 148 G4RotationMatrix* rm_x1 = new G4RotationMatrix();
>> 149 rm_x1->rotateX(90*deg);
>> 150 y = -scint_y/2. - height_pmt; //bottom
>> 151 PlacePMTs(pmt_log,rm_x1,x,z,dx,dz,xmin,zmin,nx,nz,x,y,z,k,pmt_SD);
>> 152 G4RotationMatrix* rm_x2 = new G4RotationMatrix();
>> 153 rm_x2->rotateX(-90*deg);
>> 154 y = scint_y/2. + height_pmt; //top
>> 155 PlacePMTs(pmt_log,rm_x2,x,z,dx,dz,xmin,zmin,nx,nz,x,y,z,k,pmt_SD);
>> 156
>> 157 //**********Setup Sensitive Detectors***************
>> 158 if(!scint_SD){//determine if it has already been created
>> 159 scint_SD = new LXeScintSD("/LXeDet/scintSD");
>> 160 SDman->AddNewDetector(scint_SD);
>> 161 }
>> 162 scint_log->SetSensitiveDetector(scint_SD);
>> 163
>> 164 //sensitive detector is not actually on the photocathode.
>> 165 //processHits gets done manually by the stepping action.
>> 166 //It is used to detect when photons hit and get absorbed&detected at the
>> 167 //boundary to the photocathode (which doesnt get done by attaching it to a
>> 168 //logical volume.
>> 169 //It does however need to be attached to something or else it doesnt get
>> 170 //reset at the begining of events
>> 171 photocath_log->SetSensitiveDetector(pmt_SD);
142 172
143 VisAttributes(); << 173 VisAttributes();
144 SurfaceProperties(); << 174 SurfaceProperties();
>> 175 }
145 176
146 SetLogicalVolume(fHousing_log); << 177 SetLogicalVolume(housing_log);
147 } 178 }
148 179
149 //....oooOO0OOooo........oooOO0OOooo........oo << 180 void LXeMainVolume::CopyValues(){
>> 181 updated=constructor->GetUpdated();
150 182
151 void LXeMainVolume::CopyValues() << 183 scint_x=constructor->GetScintX();
152 { << 184 scint_y=constructor->GetScintY();
153 fScint_x = fConstructor->GetScintX(); << 185 scint_z=constructor->GetScintZ();
154 fScint_y = fConstructor->GetScintY(); << 186 d_mtl=constructor->GetHousingThickness();
155 fScint_z = fConstructor->GetScintZ(); << 187 nx=constructor->GetNX();
156 fD_mtl = fConstructor->GetHousingThickness() << 188 ny=constructor->GetNY();
157 fNx = fConstructor->GetNX(); << 189 nz=constructor->GetNZ();
158 fNy = fConstructor->GetNY(); << 190 outerRadius_pmt=constructor->GetPMTRadius();
159 fNz = fConstructor->GetNZ(); << 191 sphereOn=constructor->GetSphereOn();
160 fOuterRadius_pmt = fConstructor->GetPMTRadiu << 192 refl=constructor->GetHousingReflectivity();
161 fSphereOn = fConstructor->GetSphereOn(); <<
162 fRefl = fConstructor->GetHousingReflectivity <<
163 } 193 }
164 194
165 //....oooOO0OOooo........oooOO0OOooo........oo << 195 //_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
166 << 196 void LXeMainVolume::PlacePMTs(G4LogicalVolume* pmt_log,
167 void LXeMainVolume::PlacePMTs(G4LogicalVolume* << 197 G4RotationMatrix *rot,
168 G4double& b, G4d << 198 G4double &a, G4double &b, G4double da,
169 G4int na, G4int << 199 G4double db, G4double amin,
170 { << 200 G4double bmin, G4int na, G4int nb,
171 /* PlacePMTs : a different way to parameter << 201 G4double &x, G4double &y, G4double &z,
172 * on calculating the position from the copy << 202 G4int &k,LXePMTSD* sd){
173 * << 203 /*PlacePMTs : a different way to parameterize placement that does not depend on
174 * pmt_log = logical volume for pmts to be << 204 calculating the position from the copy number
175 * rot = rotation matrix to apply << 205
176 * a,b = coordinates to vary(ie. if varying << 206 pmt_log = logical volume for pmts to be placed
177 * da,db = value to increment a,b by << 207 rot = rotation matrix to apply
178 * amin,bmin = start values for a,b << 208 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 << 209 da,db = value to increment a,b by
180 * x,y,z = just pass x,y, and z by referenc << 210 amin,bmin = start values for a,b
181 * k = copy number to start with << 211 na,nb = number of repitions in a and b
182 * sd = sensitive detector for pmts << 212 x,y,z = just pass x,y, and z by reference (the same ones passed for a,b)
183 */ << 213 k = copy number to start with
184 a = amin; << 214 sd = sensitive detector for pmts
185 for (G4int j = 1; j <= na; ++j) { << 215 */
186 a += da; << 216 a=amin;
187 b = bmin; << 217 for(G4int j=1;j<=na;j++){
188 for (G4int i = 1; i <= nb; ++i) { << 218 a+=da;
189 b += db; << 219 b=bmin;
190 new G4PVPlacement(rot, G4ThreeVector(x, << 220 for(G4int i=1;i<=nb;i++){
191 fPmtPositions.push_back(G4ThreeVector(x, << 221 b+=db;
192 ++k; << 222 new G4PVPlacement(rot,G4ThreeVector(x,y,z),pmt_log,"pmt",
>> 223 housing_log,false,k);
>> 224 sd->SetPMTPos(k,x,y,z);
>> 225 k++;
193 } 226 }
194 } 227 }
195 } 228 }
196 229
197 //....oooOO0OOooo........oooOO0OOooo........oo << 230 void LXeMainVolume::VisAttributes(){
198 << 231 G4VisAttributes* housing_va = new G4VisAttributes(G4Colour(0.8,0.8,0.8));
199 void LXeMainVolume::VisAttributes() << 232 housing_log->SetVisAttributes(housing_va);
200 { <<
201 auto housing_va = new G4VisAttributes(G4Colo <<
202 fHousing_log->SetVisAttributes(housing_va); <<
203 233
204 auto sphere_va = new G4VisAttributes(); << 234 G4VisAttributes* sphere_va = new G4VisAttributes();
205 sphere_va->SetForceSolid(true); 235 sphere_va->SetForceSolid(true);
206 fSphere_log->SetVisAttributes(sphere_va); << 236 sphere_log->SetVisAttributes(sphere_va);
207 } 237 }
208 238
209 //....oooOO0OOooo........oooOO0OOooo........oo << 239 void LXeMainVolume::SurfaceProperties(){
210 << 240 const G4int num = 2;
211 void LXeMainVolume::SurfaceProperties() << 241 G4double Ephoton[num] = {7.0*eV, 7.14*eV};
212 { << 242
213 std::vector<G4double> ephoton = {7.0 * eV, 7 << 243 //**Scintillator housing properties
214 << 244 G4double Reflectivity[num] = {refl, refl};
215 //**Scintillator housing properties << 245 G4double Efficiency[num] = {0.0, 0.0};
216 std::vector<G4double> reflectivity = {fRefl, << 246 G4MaterialPropertiesTable* scintHsngPT = new G4MaterialPropertiesTable();
217 std::vector<G4double> efficiency = {0.0, 0.0 << 247 scintHsngPT->AddProperty("REFLECTIVITY", Ephoton, Reflectivity, num);
218 auto scintHsngPT = new G4MaterialPropertiesT << 248 scintHsngPT->AddProperty("EFFICIENCY", Ephoton, Efficiency, num);
219 scintHsngPT->AddProperty("REFLECTIVITY", eph << 249 G4OpticalSurface* OpScintHousingSurface =
220 scintHsngPT->AddProperty("EFFICIENCY", ephot << 250 new G4OpticalSurface("HousingSurface",unified,polished,dielectric_metal);
221 auto OpScintHousingSurface = <<
222 new G4OpticalSurface("HousingSurface", uni <<
223 OpScintHousingSurface->SetMaterialProperties 251 OpScintHousingSurface->SetMaterialPropertiesTable(scintHsngPT);
224 << 252
225 //**Sphere surface properties 253 //**Sphere surface properties
226 std::vector<G4double> sphereReflectivity = { << 254 G4double SphereReflectivity[num] = {1.0, 1.0};
227 std::vector<G4double> sphereEfficiency = {0. << 255 G4double SphereEfficiency[num] = {0.0, 0.0};
228 auto spherePT = new G4MaterialPropertiesTabl << 256 G4MaterialPropertiesTable* spherePT = new G4MaterialPropertiesTable();
229 spherePT->AddProperty("REFLECTIVITY", ephoto << 257 spherePT->AddProperty("REFLECTIVITY", Ephoton, SphereReflectivity, num);
230 spherePT->AddProperty("EFFICIENCY", ephoton, << 258 spherePT->AddProperty("EFFICIENCY", Ephoton, SphereEfficiency, num);
231 auto OpSphereSurface = new G4OpticalSurface( << 259 G4OpticalSurface* OpSphereSurface =
>> 260 new G4OpticalSurface("SphereSurface",unified,polished,dielectric_metal);
232 OpSphereSurface->SetMaterialPropertiesTable( 261 OpSphereSurface->SetMaterialPropertiesTable(spherePT);
233 << 262
234 //**Photocathode surface properties 263 //**Photocathode surface properties
235 std::vector<G4double> photocath_EFF = {1., 1 << 264 G4double photocath_EFF[num]={1.,1.}; //Enables 'detection' of photons
236 std::vector<G4double> photocath_ReR = {1.92, << 265 G4double photocath_REFL[num]={0.,0.};
237 std::vector<G4double> photocath_ImR = {1.69, << 266 G4MaterialPropertiesTable* photocath_mt = new G4MaterialPropertiesTable();
238 auto photocath_mt = new G4MaterialProperties << 267 photocath_mt->AddProperty("EFFICIENCY",Ephoton,photocath_EFF,num);
239 photocath_mt->AddProperty("EFFICIENCY", epho << 268 photocath_mt->AddProperty("REFLECTIVITY",Ephoton,photocath_REFL,num);
240 photocath_mt->AddProperty("REALRINDEX", epho << 269 G4OpticalSurface* photocath_opsurf=
241 photocath_mt->AddProperty("IMAGINARYRINDEX", << 270 new G4OpticalSurface("photocath_opsurf",glisur,polished,
242 auto photocath_opsurf = << 271 dielectric_metal);
243 new G4OpticalSurface("photocath_opsurf", g <<
244 photocath_opsurf->SetMaterialPropertiesTable 272 photocath_opsurf->SetMaterialPropertiesTable(photocath_mt);
245 273
>> 274
246 //**Create logical skin surfaces 275 //**Create logical skin surfaces
247 new G4LogicalSkinSurface("photocath_surf", f << 276 new G4LogicalSkinSurface("photocath_surf",housing_log,
248 new G4LogicalSkinSurface("sphere_surface", f << 277 OpScintHousingSurface);
249 new G4LogicalSkinSurface("photocath_surf", f << 278 new G4LogicalSkinSurface("sphere_surface",sphere_log,OpSphereSurface);
>> 279 new G4LogicalSkinSurface("photocath_surf",photocath_log,photocath_opsurf);
250 } 280 }
>> 281
>> 282
>> 283
251 284