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OpNoviceDetectorConstruction.cc
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25 //
28 //
29 //
30 //
31 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
33 
34 #include "OpNoviceDetectorConstruction.hh"
35 
36 #include "G4Material.hh"
37 #include "G4Element.hh"
38 #include "G4LogicalBorderSurface.hh"
39 #include "G4LogicalSkinSurface.hh"
40 #include "G4OpticalSurface.hh"
41 #include "G4Box.hh"
42 #include "G4LogicalVolume.hh"
43 #include "G4ThreeVector.hh"
44 #include "G4PVPlacement.hh"
45 #include "G4SystemOfUnits.hh"
46 
47 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
48 
49 OpNoviceDetectorConstruction::OpNoviceDetectorConstruction()
50  : G4VUserDetectorConstruction()
51 {
52  fExpHall_x = fExpHall_y = fExpHall_z = 10.0*m;
53  fTank_x = fTank_y = fTank_z = 5.0*m;
54  fBubble_x = fBubble_y = fBubble_z = 0.5*m;
55 }
56 
57 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
58 
59 OpNoviceDetectorConstruction::~OpNoviceDetectorConstruction(){;}
60 
61 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
62 
63 G4VPhysicalVolume* OpNoviceDetectorConstruction::Construct()
64 {
65 
66 // ------------- Materials -------------
67 
68  G4double a, z, density;
69  G4int nelements;
70 
71 // Air
72 //
73  G4Element* N = new G4Element("Nitrogen", "N", z=7 , a=14.01*g/mole);
74  G4Element* O = new G4Element("Oxygen" , "O", z=8 , a=16.00*g/mole);
75 
76  G4Material* air = new G4Material("Air", density=1.29*mg/cm3, nelements=2);
77  air->AddElement(N, 70.*perCent);
78  air->AddElement(O, 30.*perCent);
79 
80 // Water
81 //
82  G4Element* H = new G4Element("Hydrogen", "H", z=1 , a=1.01*g/mole);
83 
84  G4Material* water = new G4Material("Water", density= 1.0*g/cm3, nelements=2);
85  water->AddElement(H, 2);
86  water->AddElement(O, 1);
87 
88 //
89 // ------------ Generate & Add Material Properties Table ------------
90 //
91  G4double photonEnergy[] =
92  { 2.034*eV, 2.068*eV, 2.103*eV, 2.139*eV,
93  2.177*eV, 2.216*eV, 2.256*eV, 2.298*eV,
94  2.341*eV, 2.386*eV, 2.433*eV, 2.481*eV,
95  2.532*eV, 2.585*eV, 2.640*eV, 2.697*eV,
96  2.757*eV, 2.820*eV, 2.885*eV, 2.954*eV,
97  3.026*eV, 3.102*eV, 3.181*eV, 3.265*eV,
98  3.353*eV, 3.446*eV, 3.545*eV, 3.649*eV,
99  3.760*eV, 3.877*eV, 4.002*eV, 4.136*eV };
100 
101  const G4int nEntries = sizeof(photonEnergy)/sizeof(G4double);
102 
103 //
104 // Water
105 //
106  G4double refractiveIndex1[] =
107  { 1.3435, 1.344, 1.3445, 1.345, 1.3455,
108  1.346, 1.3465, 1.347, 1.3475, 1.348,
109  1.3485, 1.3492, 1.35, 1.3505, 1.351,
110  1.3518, 1.3522, 1.3530, 1.3535, 1.354,
111  1.3545, 1.355, 1.3555, 1.356, 1.3568,
112  1.3572, 1.358, 1.3585, 1.359, 1.3595,
113  1.36, 1.3608};
114 
115  assert(sizeof(refractiveIndex1) == sizeof(photonEnergy));
116 
117  G4double absorption[] =
118  {3.448*m, 4.082*m, 6.329*m, 9.174*m, 12.346*m, 13.889*m,
119  15.152*m, 17.241*m, 18.868*m, 20.000*m, 26.316*m, 35.714*m,
120  45.455*m, 47.619*m, 52.632*m, 52.632*m, 55.556*m, 52.632*m,
121  52.632*m, 47.619*m, 45.455*m, 41.667*m, 37.037*m, 33.333*m,
122  30.000*m, 28.500*m, 27.000*m, 24.500*m, 22.000*m, 19.500*m,
123  17.500*m, 14.500*m };
124 
125  assert(sizeof(absorption) == sizeof(photonEnergy));
126 
127  G4double scintilFast[] =
128  { 1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00,
129  1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00,
130  1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00,
131  1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00,
132  1.00, 1.00, 1.00, 1.00 };
133 
134  assert(sizeof(scintilFast) == sizeof(photonEnergy));
135 
136  G4double scintilSlow[] =
137  { 0.01, 1.00, 2.00, 3.00, 4.00, 5.00, 6.00,
138  7.00, 8.00, 9.00, 8.00, 7.00, 6.00, 4.00,
139  3.00, 2.00, 1.00, 0.01, 1.00, 2.00, 3.00,
140  4.00, 5.00, 6.00, 7.00, 8.00, 9.00, 8.00,
141  7.00, 6.00, 5.00, 4.00 };
142 
143  assert(sizeof(scintilSlow) == sizeof(photonEnergy));
144 
145  G4MaterialPropertiesTable* myMPT1 = new G4MaterialPropertiesTable();
146 
147  myMPT1->AddProperty("RINDEX", photonEnergy, refractiveIndex1,nEntries)
148  ->SetSpline(true);
149  myMPT1->AddProperty("ABSLENGTH", photonEnergy, absorption, nEntries)
150  ->SetSpline(true);
151  myMPT1->AddProperty("FASTCOMPONENT",photonEnergy, scintilFast, nEntries)
152  ->SetSpline(true);
153  myMPT1->AddProperty("SLOWCOMPONENT",photonEnergy, scintilSlow, nEntries)
154  ->SetSpline(true);
155 
156  myMPT1->AddConstProperty("SCINTILLATIONYIELD",50./MeV);
157  myMPT1->AddConstProperty("RESOLUTIONSCALE",1.0);
158  myMPT1->AddConstProperty("FASTTIMECONSTANT", 1.*ns);
159  myMPT1->AddConstProperty("SLOWTIMECONSTANT",10.*ns);
160  myMPT1->AddConstProperty("YIELDRATIO",0.8);
161 
162  G4double energy_water[] = {
163  1.56962*eV, 1.58974*eV, 1.61039*eV, 1.63157*eV,
164  1.65333*eV, 1.67567*eV, 1.69863*eV, 1.72222*eV,
165  1.74647*eV, 1.77142*eV, 1.7971 *eV, 1.82352*eV,
166  1.85074*eV, 1.87878*eV, 1.90769*eV, 1.93749*eV,
167  1.96825*eV, 1.99999*eV, 2.03278*eV, 2.06666*eV,
168  2.10169*eV, 2.13793*eV, 2.17543*eV, 2.21428*eV,
169  2.25454*eV, 2.29629*eV, 2.33962*eV, 2.38461*eV,
170  2.43137*eV, 2.47999*eV, 2.53061*eV, 2.58333*eV,
171  2.63829*eV, 2.69565*eV, 2.75555*eV, 2.81817*eV,
172  2.88371*eV, 2.95237*eV, 3.02438*eV, 3.09999*eV,
173  3.17948*eV, 3.26315*eV, 3.35134*eV, 3.44444*eV,
174  3.54285*eV, 3.64705*eV, 3.75757*eV, 3.87499*eV,
175  3.99999*eV, 4.13332*eV, 4.27585*eV, 4.42856*eV,
176  4.59258*eV, 4.76922*eV, 4.95999*eV, 5.16665*eV,
177  5.39129*eV, 5.63635*eV, 5.90475*eV, 6.19998*eV
178  };
179 
180  const G4int numentries_water = sizeof(energy_water)/sizeof(G4double);
181 
182  //assume 100 times larger than the rayleigh scattering for now.
183  G4double mie_water[] = {
184  167024.4*m, 158726.7*m, 150742 *m,
185  143062.5*m, 135680.2*m, 128587.4*m,
186  121776.3*m, 115239.5*m, 108969.5*m,
187  102958.8*m, 97200.35*m, 91686.86*m,
188  86411.33*m, 81366.79*m, 76546.42*m,
189  71943.46*m, 67551.29*m, 63363.36*m,
190  59373.25*m, 55574.61*m, 51961.24*m,
191  48527.00*m, 45265.87*m, 42171.94*m,
192  39239.39*m, 36462.50*m, 33835.68*m,
193  31353.41*m, 29010.30*m, 26801.03*m,
194  24720.42*m, 22763.36*m, 20924.88*m,
195  19200.07*m, 17584.16*m, 16072.45*m,
196  14660.38*m, 13343.46*m, 12117.33*m,
197  10977.70*m, 9920.416*m, 8941.407*m,
198  8036.711*m, 7202.470*m, 6434.927*m,
199  5730.429*m, 5085.425*m, 4496.467*m,
200  3960.210*m, 3473.413*m, 3032.937*m,
201  2635.746*m, 2278.907*m, 1959.588*m,
202  1675.064*m, 1422.710*m, 1200.004*m,
203  1004.528*m, 833.9666*m, 686.1063*m
204  };
205 
206  assert(sizeof(mie_water) == sizeof(energy_water));
207 
208  // gforward, gbackward, forward backward ratio
209  G4double mie_water_const[3]={0.99,0.99,0.8};
210 
211  myMPT1->AddProperty("MIEHG",energy_water,mie_water,numentries_water)
212  ->SetSpline(true);
213  myMPT1->AddConstProperty("MIEHG_FORWARD",mie_water_const[0]);
214  myMPT1->AddConstProperty("MIEHG_BACKWARD",mie_water_const[1]);
215  myMPT1->AddConstProperty("MIEHG_FORWARD_RATIO",mie_water_const[2]);
216 
217  G4cout << "Water G4MaterialPropertiesTable" << G4endl;
218  myMPT1->DumpTable();
219 
220  water->SetMaterialPropertiesTable(myMPT1);
221 
222  // Set the Birks Constant for the Water scintillator
223 
224  water->GetIonisation()->SetBirksConstant(0.126*mm/MeV);
225 
226 //
227 // Air
228 //
229  G4double refractiveIndex2[] =
230  { 1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00,
231  1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00,
232  1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00,
233  1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00,
234  1.00, 1.00, 1.00, 1.00 };
235 
236  G4MaterialPropertiesTable* myMPT2 = new G4MaterialPropertiesTable();
237  myMPT2->AddProperty("RINDEX", photonEnergy, refractiveIndex2, nEntries);
238 
239  G4cout << "Air G4MaterialPropertiesTable" << G4endl;
240  myMPT2->DumpTable();
241 
242  air->SetMaterialPropertiesTable(myMPT2);
243 
244 //
245 // ------------- Volumes --------------
246 
247 // The experimental Hall
248 //
249  G4Box* expHall_box = new G4Box("World",fExpHall_x,fExpHall_y,fExpHall_z);
250 
251  G4LogicalVolume* expHall_log
252  = new G4LogicalVolume(expHall_box,air,"World",0,0,0);
253 
254  G4VPhysicalVolume* expHall_phys
255  = new G4PVPlacement(0,G4ThreeVector(),expHall_log,"World",0,false,0);
256 
257 // The Water Tank
258 //
259  G4Box* waterTank_box = new G4Box("Tank",fTank_x,fTank_y,fTank_z);
260 
261  G4LogicalVolume* waterTank_log
262  = new G4LogicalVolume(waterTank_box,water,"Tank",0,0,0);
263 
264  G4VPhysicalVolume* waterTank_phys
265  = new G4PVPlacement(0,G4ThreeVector(),waterTank_log,"Tank",
266  expHall_log,false,0);
267 
268 // The Air Bubble
269 //
270  G4Box* bubbleAir_box = new G4Box("Bubble",fBubble_x,fBubble_y,fBubble_z);
271 
272  G4LogicalVolume* bubbleAir_log
273  = new G4LogicalVolume(bubbleAir_box,air,"Bubble",0,0,0);
274 
275 //G4VPhysicalVolume* bubbleAir_phys =
276  new G4PVPlacement(0,G4ThreeVector(0,2.5*m,0),bubbleAir_log,"Bubble",
277  waterTank_log,false,0);
278 
279 // ------------- Surfaces --------------
280 //
281 // Water Tank
282 //
283  G4OpticalSurface* opWaterSurface = new G4OpticalSurface("WaterSurface");
284 // opWaterSurface->SetType(dielectric_dielectric);
285 // opWaterSurface->SetFinish(ground);
286 // opWaterSurface->SetModel(unified);
287  opWaterSurface->SetType(dielectric_LUTDAVIS);
288  opWaterSurface->SetFinish(Rough_LUT);
289  opWaterSurface->SetModel(DAVIS);
290 
291  G4LogicalBorderSurface* waterSurface =
292  new G4LogicalBorderSurface("WaterSurface",
293  waterTank_phys,expHall_phys,opWaterSurface);
294 
295  G4OpticalSurface* opticalSurface = dynamic_cast <G4OpticalSurface*>
296  (waterSurface->GetSurface(waterTank_phys,expHall_phys)->
297  GetSurfaceProperty());
298  if (opticalSurface) opticalSurface->DumpInfo();
299 
300 // Air Bubble
301 //
302  G4OpticalSurface* opAirSurface = new G4OpticalSurface("AirSurface");
303  opAirSurface->SetType(dielectric_dielectric);
304  opAirSurface->SetFinish(polished);
305  opAirSurface->SetModel(glisur);
306 
307  G4LogicalSkinSurface* airSurface =
308  new G4LogicalSkinSurface("AirSurface", bubbleAir_log, opAirSurface);
309 
310  opticalSurface = dynamic_cast <G4OpticalSurface*>
311  (airSurface->GetSurface(bubbleAir_log)->GetSurfaceProperty());
312  if (opticalSurface) opticalSurface->DumpInfo();
313 
314 //
315 // Generate & Add Material Properties Table attached to the optical surfaces
316 //
317  const G4int num = 2;
318  G4double ephoton[num] = {2.034*eV, 4.136*eV};
319 
320  //OpticalWaterSurface
321  // if surface model is unified we can set parameters
322 // G4double refractiveIndex[num] = {1.35, 1.40};
323 // G4double specularLobe[num] = {0.3, 0.3};
324 // G4double specularSpike[num] = {0.2, 0.2};
325 // G4double backScatter[num] = {0.2, 0.2};
326 //
327 // G4MaterialPropertiesTable* myST1 = new G4MaterialPropertiesTable();
328 // myST1->AddProperty("RINDEX", ephoton, refractiveIndex, num);
329 // myST1->AddProperty("SPECULARLOBECONSTANT", ephoton, specularLobe, num);
330 // myST1->AddProperty("SPECULARSPIKECONSTANT", ephoton, specularSpike, num);
331 // myST1->AddProperty("BACKSCATTERCONSTANT", ephoton, backScatter, num);
332 //
333 // G4cout << "Water Surface G4MaterialPropertiesTable" << G4endl;
334 // myST1->DumpTable();
335 
336 // opWaterSurface->SetMaterialPropertiesTable(myST1);
337 
338  //OpticalAirSurface
339  G4double reflectivity[num] = {0.3, 0.5};
340  G4double efficiency[num] = {0.8, 1.0};
341 
342  G4MaterialPropertiesTable *myST2 = new G4MaterialPropertiesTable();
343 
344  myST2->AddProperty("REFLECTIVITY", ephoton, reflectivity, num);
345  myST2->AddProperty("EFFICIENCY", ephoton, efficiency, num);
346 
347  G4cout << "Air Surface G4MaterialPropertiesTable" << G4endl;
348  myST2->DumpTable();
349 
350  opAirSurface->SetMaterialPropertiesTable(myST2);
351 
352 //always return the physical World
353  return expHall_phys;
354 }
355 
356 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......