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25 //
26 /// \file field/field03/src/F03DetectorConstruction.cc
27 /// \brief Implementation of the F03DetectorConstruction class
28 //
29 //
30 //
31 //
32 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
33 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
34
35 #include "F03DetectorConstruction.hh"
36
37 #include "F03CalorimeterSD.hh"
38 #include "F03DetectorMessenger.hh"
39
40 #include "G4AutoDelete.hh"
41 #include "G4GeometryManager.hh"
42 #include "G4FieldBuilder.hh"
43 #include "G4LogicalVolume.hh"
44 #include "G4LogicalVolumeStore.hh"
45 #include "G4Material.hh"
46 #include "G4PVPlacement.hh"
47 #include "G4PhysicalConstants.hh"
48 #include "G4PhysicalVolumeStore.hh"
49 #include "G4RunManager.hh"
50 #include "G4SDManager.hh"
51 #include "G4SolidStore.hh"
52 #include "G4SystemOfUnits.hh"
53 #include "G4Tubs.hh"
54 #include "G4UniformMagField.hh"
55
56 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
57
58 F03DetectorConstruction::F03DetectorConstruction()
59 {
60 fDetectorMessenger = new F03DetectorMessenger(this);
61
62 // create field builder
63 // this will create commands for field parameters
64 G4FieldBuilder* fieldBuilder = G4FieldBuilder::Instance();
65 // fieldBuilder->SetVerboseLevel(2);
66
67 auto globalFieldParameters = fieldBuilder->GetFieldParameters();
68 auto localFieldParameters = fieldBuilder->CreateFieldParameters("Radiator");
69
70 // set default min step 0.25 mm
71 globalFieldParameters->SetMinimumStep(0.25 * mm);
72 localFieldParameters->SetMinimumStep(0.25 * mm);
73
74 // create materials
75 DefineMaterials();
76 }
77
78 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
79
80 F03DetectorConstruction::~F03DetectorConstruction()
81 {
82 delete fDetectorMessenger;
83 }
84
85 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
86
87 G4VPhysicalVolume* F03DetectorConstruction::Construct()
88 {
89 return ConstructCalorimeter();
90 }
91
92 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
93
94 void F03DetectorConstruction::DefineMaterials()
95 {
96 // This function illustrates the possible ways to define materials
97
98 G4String name, symbol; // a=mass of a mole;
99 G4double a, z, density; // z=mean number of protons;
100 G4int nel;
101 G4int ncomponents;
102 G4double fractionmass, pressure, temperature;
103
104 //
105 // define Elements
106 //
107
108 a = 1.01 * g / mole;
109 auto elH = new G4Element(name = "Hydrogen", symbol = "H", z = 1., a);
110
111 a = 12.01 * g / mole;
112 auto elC = new G4Element(name = "Carbon", symbol = "C", z = 6., a);
113
114 a = 14.01 * g / mole;
115 auto elN = new G4Element(name = "Nitrogen", symbol = "N", z = 7., a);
116
117 a = 16.00 * g / mole;
118 auto elO = new G4Element(name = "Oxygen", symbol = "O", z = 8., a);
119
120 a = 39.948 * g / mole;
121 auto elAr = new G4Element(name = "Argon", symbol = "Ar", z = 18., a);
122
123 //
124 // define simple materials
125 //
126
127 // Mylar
128
129 density = 1.39 * g / cm3;
130 auto mylar = new G4Material(name = "Mylar", density, nel = 3);
131 mylar->AddElement(elO, 2);
132 mylar->AddElement(elC, 5);
133 mylar->AddElement(elH, 4);
134
135 // Polypropelene
136
137 auto CH2 = new G4Material("Polypropelene", 0.91 * g / cm3, 2);
138 CH2->AddElement(elH, 2);
139 CH2->AddElement(elC, 1);
140
141 // Krypton as detector gas, STP
142
143 density = 3.700 * mg / cm3;
144 a = 83.80 * g / mole;
145 auto Kr = new G4Material(name = "Kr", z = 36., a, density);
146
147 // Dry air (average composition)
148
149 density = 1.7836 * mg / cm3; // STP
150 auto argon = new G4Material(name = "Argon", density, ncomponents = 1);
151 argon->AddElement(elAr, 1);
152
153 density = 1.25053 * mg / cm3; // STP
154 auto nitrogen = new G4Material(name = "N2", density, ncomponents = 1);
155 nitrogen->AddElement(elN, 2);
156
157 density = 1.4289 * mg / cm3; // STP
158 auto oxygen = new G4Material(name = "O2", density, ncomponents = 1);
159 oxygen->AddElement(elO, 2);
160
161 density = 1.2928 * mg / cm3; // STP
162 density *= 1.0e-8; // pumped vacuum
163 temperature = STP_Temperature;
164 pressure = 1.0e-8 * STP_Pressure;
165
166 auto air =
167 new G4Material(name = "Air", density, ncomponents = 3, kStateGas, temperature, pressure);
168 air->AddMaterial(nitrogen, fractionmass = 0.7557);
169 air->AddMaterial(oxygen, fractionmass = 0.2315);
170 air->AddMaterial(argon, fractionmass = 0.0128);
171
172 // Xenon as detector gas, STP
173
174 density = 5.858 * mg / cm3;
175 a = 131.29 * g / mole;
176 auto Xe = new G4Material(name = "Xenon", z = 54., a, density);
177
178 // Carbon dioxide, STP
179
180 density = 1.842 * mg / cm3;
181 auto CarbonDioxide = new G4Material(name = "CO2", density, nel = 2);
182 CarbonDioxide->AddElement(elC, 1);
183 CarbonDioxide->AddElement(elO, 2);
184
185 // 80% Xe + 20% CO2, STP
186
187 density = 5.0818 * mg / cm3;
188 auto Xe20CO2 = new G4Material(name = "Xe20CO2", density, ncomponents = 2);
189 Xe20CO2->AddMaterial(Xe, fractionmass = 0.922);
190 Xe20CO2->AddMaterial(CarbonDioxide, fractionmass = 0.078);
191
192 // 80% Kr + 20% CO2, STP
193
194 density = 3.601 * mg / cm3;
195 auto Kr20CO2 = new G4Material(name = "Kr20CO2", density, ncomponents = 2);
196 Kr20CO2->AddMaterial(Kr, fractionmass = 0.89);
197 Kr20CO2->AddMaterial(CarbonDioxide, fractionmass = 0.11);
198
199 G4cout << *(G4Material::GetMaterialTable()) << G4endl;
200
201 // default materials of the calorimeter and TR radiator
202
203 fRadiatorMat = air; // CH2 ; // mylar;
204
205 fAbsorberMaterial = air; // Kr20CO2; // XeCO2CF4;
206
207 fWorldMaterial = air;
208 }
209
210 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
211
212 G4VPhysicalVolume* F03DetectorConstruction::ConstructCalorimeter()
213 {
214 // Cleanup old geometry
215
216 if (fPhysiWorld) {
217 G4GeometryManager::GetInstance()->OpenGeometry();
218 G4PhysicalVolumeStore::GetInstance()->Clean();
219 G4LogicalVolumeStore::GetInstance()->Clean();
220 G4SolidStore::GetInstance()->Clean();
221 }
222
223 // complete the Calor parameters definition and Print
224
225 ComputeCalorParameters();
226 PrintCalorParameters();
227
228 G4bool checkOverlaps = true;
229
230 fSolidWorld = new G4Tubs("World", // its name
231 0., fWorldSizeR, fWorldSizeZ / 2., 0., twopi); // its size
232
233 fLogicWorld = new G4LogicalVolume(fSolidWorld, // its solid
234 fWorldMaterial, // its material
235 "World"); // its name
236
237 fPhysiWorld = new G4PVPlacement(nullptr, // no rotation
238 G4ThreeVector(), // at (0,0,0)
239 "World", // its name
240 fLogicWorld, // its logical volume
241 nullptr, // its mother volume
242 false, // no boolean op.
243 0, // copy number
244 checkOverlaps); // checkOverlaps
245
246 // TR radiator envelope
247 G4double radThick = fFoilNumber * (fRadThickness + fGasGap) + fDetGap;
248 G4double zRad = fZAbsorber - 0.5 * (radThick + fAbsorberThickness);
249
250 G4cout << "zRad = " << zRad / mm << " mm" << G4endl;
251 G4cout << "radThick = " << radThick / mm << " mm" << G4endl;
252 G4cout << "fFoilNumber = " << fFoilNumber << G4endl;
253 G4cout << "fRadiatorMat = " << fRadiatorMat->GetName() << G4endl;
254 G4cout << "WorldMaterial = " << fWorldMaterial->GetName() << G4endl;
255
256 fSolidRadiator = new G4Tubs("Radiator", 0.0, fAbsorberRadius, 0.5 * radThick, 0.0, twopi);
257
258 fLogicRadiator = new G4LogicalVolume(fSolidRadiator, fWorldMaterial, "Radiator");
259
260 fPhysiRadiator = new G4PVPlacement(nullptr, G4ThreeVector(0, 0, zRad), "Radiator", fLogicRadiator,
261 fPhysiWorld, false, 0, checkOverlaps);
262
263 fSolidRadSlice = new G4Tubs("RadSlice", 0.0, fAbsorberRadius, 0.5 * fRadThickness, 0.0, twopi);
264
265 fLogicRadSlice = new G4LogicalVolume(fSolidRadSlice, fRadiatorMat, "RadSlice");
266
267 // Radiator slice
268 G4double radSliceThick = fRadThickness + fGasGap;
269 G4double zStart = 0.5 * (-radThick + radSliceThick) + fDetGap;
270 // start on the board of radiator enevelope + det gap
271
272 for (G4int j = 0; j < fFoilNumber; j++) {
273 G4double zSlice = zStart + j * radSliceThick;
274 G4cout << zSlice / mm << " mm"
275 << "\t";
276
277 fPhysiRadSlice = new G4PVPlacement(nullptr, G4ThreeVector(0., 0., zSlice), "RadSlice",
278 fLogicRadSlice, fPhysiRadiator, false, j, checkOverlaps);
279 }
280 G4cout << G4endl;
281
282 // Absorber
283
284 fSolidAbsorber =
285 new G4Tubs("Absorber", 1.0 * mm, fAbsorberRadius, fAbsorberThickness / 2., 0.0, twopi);
286
287 fLogicAbsorber = new G4LogicalVolume(fSolidAbsorber, fAbsorberMaterial, "Absorber");
288
289 fPhysiAbsorber = new G4PVPlacement(nullptr, G4ThreeVector(0., 0., fZAbsorber), "Absorber",
290 fLogicAbsorber, fPhysiWorld, false, 0, checkOverlaps);
291
292 return fPhysiWorld;
293 }
294
295 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
296
297 void F03DetectorConstruction::PrintCalorParameters()
298 {
299 G4cout << "\n The WORLD is made of " << fWorldSizeZ / mm << "mm of "
300 << fWorldMaterial->GetName();
301 G4cout << ", the transverse size (R) of the world is " << fWorldSizeR / mm << " mm. " << G4endl;
302 G4cout << " The ABSORBER is made of " << fAbsorberThickness / mm << "mm of "
303 << fAbsorberMaterial->GetName();
304 G4cout << ", the transverse size (R) is " << fAbsorberRadius / mm << " mm. " << G4endl;
305 G4cout << " Z position of the (middle of the) absorber " << fZAbsorber / mm << " mm." << G4endl;
306 G4cout << G4endl;
307 }
308
309 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
310
311 void F03DetectorConstruction::SetAbsorberMaterial(G4String materialChoice)
312 {
313 // get the pointer to the material table
314 const G4MaterialTable* theMaterialTable = G4Material::GetMaterialTable();
315
316 // search the material by its name
317 G4Material* material;
318 for (size_t j = 0; j < theMaterialTable->size(); j++) {
319 material = (*theMaterialTable)[j];
320 if (material->GetName() == materialChoice) {
321 fAbsorberMaterial = material;
322 fLogicAbsorber->SetMaterial(material);
323 G4RunManager::GetRunManager()->PhysicsHasBeenModified();
324 }
325 }
326 }
327
328 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
329
330 void F03DetectorConstruction::SetWorldMaterial(G4String materialChoice)
331 {
332 // get the pointer to the material table
333 const G4MaterialTable* theMaterialTable = G4Material::GetMaterialTable();
334
335 // search the material by its name
336 G4Material* material;
337 for (size_t j = 0; j < theMaterialTable->size(); j++) {
338 material = (*theMaterialTable)[j];
339 if (material->GetName() == materialChoice) {
340 fWorldMaterial = material;
341 fLogicWorld->SetMaterial(material);
342 G4RunManager::GetRunManager()->PhysicsHasBeenModified();
343 }
344 }
345 }
346
347 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
348
349 void F03DetectorConstruction::SetAbsorberThickness(G4double val)
350 {
351 // change Absorber thickness and recompute the calorimeter parameters
352 fAbsorberThickness = val;
353 ComputeCalorParameters();
354 G4RunManager::GetRunManager()->GeometryHasBeenModified();
355 }
356
357 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
358
359 void F03DetectorConstruction::SetAbsorberRadius(G4double val)
360 {
361 // change the transverse size and recompute the calorimeter parameters
362 fAbsorberRadius = val;
363 ComputeCalorParameters();
364 G4RunManager::GetRunManager()->GeometryHasBeenModified();
365 }
366
367 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
368
369 void F03DetectorConstruction::SetWorldSizeZ(G4double val)
370 {
371 fWorldSizeZ = val;
372 ComputeCalorParameters();
373 G4RunManager::GetRunManager()->GeometryHasBeenModified();
374 }
375
376 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
377
378 void F03DetectorConstruction::SetWorldSizeR(G4double val)
379 {
380 fWorldSizeR = val;
381 ComputeCalorParameters();
382 G4RunManager::GetRunManager()->GeometryHasBeenModified();
383 }
384
385 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
386
387 void F03DetectorConstruction::SetAbsorberZpos(G4double val)
388 {
389 fZAbsorber = val;
390 ComputeCalorParameters();
391 G4RunManager::GetRunManager()->GeometryHasBeenModified();
392 }
393
394 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
395
396 void F03DetectorConstruction::SetFieldValue(G4ThreeVector value)
397 {
398 fFieldVector = value;
399
400 G4UniformMagField* magField = nullptr;
401 if (fFieldVector != G4ThreeVector(0.,0.,0.)) {
402 magField = new G4UniformMagField(fFieldVector);
403 }
404
405 // Set field to the field builder
406 auto fieldBuilder = G4FieldBuilder::Instance();
407 fieldBuilder->SetGlobalField(magField);
408 }
409
410 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
411
412
413 void F03DetectorConstruction::SetLocalFieldValue(G4ThreeVector value)
414 {
415 fLocalFieldVector = value;
416
417 G4UniformMagField* magField = nullptr;
418 if (fLocalFieldVector != G4ThreeVector(0.,0.,0.)) {
419 magField = new G4UniformMagField(fLocalFieldVector);
420 }
421
422 // Set field to the field builder
423 auto fieldBuilder = G4FieldBuilder::Instance();
424 fieldBuilder->SetLocalField(magField, fLogicRadiator);
425 }
426
427 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
428
429 void F03DetectorConstruction::ConstructSDandField()
430 {
431 // Sensitive Detectors: Absorber
432
433 if (!fCalorimeterSD.Get()) {
434 auto calorimeterSD = new F03CalorimeterSD("CalorSD", this);
435 fCalorimeterSD.Put(calorimeterSD);
436 }
437 G4SDManager::GetSDMpointer()->AddNewDetector(fCalorimeterSD.Get());
438 SetSensitiveDetector(fLogicAbsorber, fCalorimeterSD.Get());
439
440 // Create detector fields
441 SetFieldValue(fFieldVector);
442 SetLocalFieldValue(fLocalFieldVector);
443
444 // Construct all Geant4 field objects
445 auto fieldBuilder = G4FieldBuilder::Instance();
446 fieldBuilder->ConstructFieldSetup();
447 }
448
449 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
450