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25 // 25 //
26 // Please cite the following paper if you use << 26 // -------------------------------------------------------------------
27 // Nucl.Instrum.Meth.B260:20-27, 2007 << 27 // $Id$
28 // << 28 // -------------------------------------------------------------------
29 // Based on purging magnet advanced example. <<
30 // <<
31 29
32 #include "DetectorConstruction.hh" 30 #include "DetectorConstruction.hh"
33 <<
34 #include "G4PhysicalConstants.hh" 31 #include "G4PhysicalConstants.hh"
35 #include "G4SystemOfUnits.hh" 32 #include "G4SystemOfUnits.hh"
36 #include "G4NistManager.hh" 33 #include "G4NistManager.hh"
37 #include "G4RunManager.hh" <<
38 <<
39 // Field <<
40 #include "G4Mag_UsualEqRhs.hh" <<
41 #include "G4TransportationManager.hh" <<
42 #include "G4ClassicalRK4.hh" <<
43 #include "G4PropagatorInField.hh" <<
44 <<
45 //....oooOO0OOooo........oooOO0OOooo........oo <<
46 <<
47 G4ThreadLocal TabulatedField3D* DetectorConstr <<
48 34
49 //....oooOO0OOooo........oooOO0OOooo........oo 35 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
50 36
51 DetectorConstruction::DetectorConstruction() 37 DetectorConstruction::DetectorConstruction()
52 { 38 {
53 fDetectorMessenger = new DetectorMessenger(th << 39 detectorMessenger = new DetectorMessenger(this);
54 << 40 gradientsInitialized=false;
55 // Default values (square field, coef calcula << 41 G1=0; G2=0; G3=0; G4=0; coef=0; profile=0; grid=0;
56 <<
57 fModel=1; <<
58 fG1=-11.964623; <<
59 fG2=16.494652; <<
60 fG3=9.866770; <<
61 fG4=-6.244493; <<
62 fCoef=0; <<
63 fProfile=1; <<
64 fGrid=0; <<
65 <<
66 } 42 }
67 43
68 //....oooOO0OOooo........oooOO0OOooo........oo 44 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
69 45
70 DetectorConstruction::~DetectorConstruction() 46 DetectorConstruction::~DetectorConstruction()
71 { delete fDetectorMessenger;} << 47 { delete detectorMessenger;}
72 48
73 //....oooOO0OOooo........oooOO0OOooo........oo 49 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
74 50
75 G4VPhysicalVolume* DetectorConstruction::Const 51 G4VPhysicalVolume* DetectorConstruction::Construct()
76 52
77 { 53 {
78 DefineMaterials(); 54 DefineMaterials();
79 return ConstructVolumes(); 55 return ConstructVolumes();
80 } 56 }
81 57
82 //....oooOO0OOooo........oooOO0OOooo........oo 58 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
83 59
84 void DetectorConstruction::DefineMaterials() 60 void DetectorConstruction::DefineMaterials()
85 { 61 {
86 G4String name, symbol; 62 G4String name, symbol;
87 G4double density; 63 G4double density;
88 64
89 G4double z, a; 65 G4double z, a;
90 66
91 // Vacuum standard definition... 67 // Vacuum standard definition...
92 density = universe_mean_density; 68 density = universe_mean_density;
93 G4Material* vacuum = new G4Material(name="Va 69 G4Material* vacuum = new G4Material(name="Vacuum", z=1., a=1.01*g/mole,
94 density); 70 density);
95 71
96 // NIST 72 // NIST
97 G4NistManager *man=G4NistManager::Instance() 73 G4NistManager *man=G4NistManager::Instance();
98 man->SetVerbose(1); 74 man->SetVerbose(1);
99 75
100 // <<
101 <<
102 G4cout << G4endl << *(G4Material::GetMateria 76 G4cout << G4endl << *(G4Material::GetMaterialTable()) << G4endl;
103 77
104 // Default materials in setup. 78 // Default materials in setup.
105 fDefaultMaterial = vacuum; << 79 defaultMaterial = vacuum;
106 fGridMaterial = man->FindOrBuildMaterial("G4 << 80 gridMaterial = man->FindOrBuildMaterial("G4_Ni");
107 } 81 }
108 82
109 //....oooOO0OOooo........oooOO0OOooo........oo 83 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
110 84
111 G4VPhysicalVolume* DetectorConstruction::Const 85 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
112 { 86 {
113 87
114 fSolidWorld = new G4Box("World", //it << 88 static G4bool fieldIsInitialized = false;
>> 89 if(!fieldIsInitialized && gradientsInitialized)
>> 90 {
>> 91 G4FieldManager* pFieldMgr;
>> 92 G4MagIntegratorStepper* pStepper;
>> 93 G4Mag_UsualEqRhs* pEquation;
>> 94
>> 95 G4MagneticField* Field= new TabulatedField3D(G1, G2, G3, G4, model);
>> 96
>> 97 pEquation = new G4Mag_UsualEqRhs (Field);
>> 98 pStepper = new G4ClassicalRK4 (pEquation);
>> 99 pFieldMgr=G4TransportationManager::GetTransportationManager()->GetFieldManager();
>> 100
>> 101 G4ChordFinder *pChordFinder = new G4ChordFinder(Field,1e-9*m,pStepper);
>> 102 pFieldMgr->SetChordFinder( pChordFinder );
>> 103
>> 104 pFieldMgr->SetDetectorField(Field);
>> 105
>> 106 fieldIsInitialized = true;
>> 107
>> 108 // tuned parameters
>> 109 pFieldMgr->GetChordFinder()->SetDeltaChord(1.e-9*m);
>> 110 pFieldMgr->SetDeltaIntersection(1.e-9*m);
>> 111 pFieldMgr->SetDeltaOneStep(1.e-9*m);
>> 112
>> 113 G4PropagatorInField *propInField;
>> 114 propInField =
>> 115 G4TransportationManager::GetTransportationManager()->GetPropagatorInField();
>> 116 propInField->SetMinimumEpsilonStep(1e-11);
>> 117 propInField->SetMaximumEpsilonStep(1e-10);
>> 118
>> 119 }
>> 120
>> 121 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 122
>> 123 solidWorld = new G4Box("World", //its name
115 12*m/2,12*m/2,22*m/2); //its size 124 12*m/2,12*m/2,22*m/2); //its size
116 125
117 126
118 fLogicWorld = new G4LogicalVolume(fSolidWorl << 127 logicWorld = new G4LogicalVolume(solidWorld, //its solid
119 fDefaultMaterial, //its material << 128 defaultMaterial, //its material
120 "World"); //its name << 129 "World"); //its name
121 130
122 fPhysiWorld = new G4PVPlacement(0, //no << 131 physiWorld = new G4PVPlacement(0, //no rotation
123 G4ThreeVector(), //at (0,0,0) 132 G4ThreeVector(), //at (0,0,0)
124 "World", // 133 "World", //its name
125 fLogicWorld, << 134 logicWorld, //its logical volume
126 NULL, // 135 NULL, //its mother volume
127 false, // 136 false, //no boolean operation
128 0); //co 137 0); //copy number
129 138
130 139
131 // MAGNET VOLUME 140 // MAGNET VOLUME
132 141
133 fSolidVol = new G4Box("Vol", //its na << 142 solidVol = new G4Box("Vol", //its name
134 10*m/2,10*m/2,9.120*m/2); //its si 143 10*m/2,10*m/2,9.120*m/2); //its size
135 144
136 145
137 fLogicVol = new G4LogicalVolume(fSolidVol, << 146 logicVol = new G4LogicalVolume(solidVol, //its solid
138 fDefaultMaterial, //its material << 147 defaultMaterial, //its material
139 "Vol"); //its name << 148 "Vol"); //its name
140 149
141 fPhysiVol = new G4PVPlacement(0, //no r << 150 physiVol = new G4PVPlacement(0, //no rotation
142 G4ThreeVector(0,0,-4310*mm), //at ( 151 G4ThreeVector(0,0,-4310*mm), //at (0,0,0)
143 "Vol", // 152 "Vol", //its name
144 fLogicVol, << 153 logicVol, //its logical volume
145 fPhysiWorld, << 154 physiWorld, //its mother volume
146 false, // 155 false, //no boolean operation
147 0); //co 156 0); //copy number
148 157
149 // GRID 158 // GRID
150 159
151 if (fGrid==1) << 160 if (grid==1)
152 { 161 {
153 162
154 G4cout << G4endl; 163 G4cout << G4endl;
155 164
156 G4cout << " ********************** " << G4en 165 G4cout << " ********************** " << G4endl;
157 G4cout << " **** GRID IN PLACE *** " << G4en 166 G4cout << " **** GRID IN PLACE *** " << G4endl;
158 G4cout << " ********************** " << G4en 167 G4cout << " ********************** " << G4endl;
159 168
160 G4double x_grid=5.0*mm; 169 G4double x_grid=5.0*mm;
161 G4double y_grid=5.0*mm; 170 G4double y_grid=5.0*mm;
162 G4double grid_Zpos=(250+200)*mm; // 250 << 171 G4double grid_Zpos=(250+200)*mm; // 250+10 mm for object size of 50µm diam
163 172
164 //G4double thickness_grid=10*micrometer; 173 //G4double thickness_grid=10*micrometer;
165 G4double thickness_grid=100*micrometer; 174 G4double thickness_grid=100*micrometer;
166 175
167 G4double z_grid=thickness_grid/2.0; 176 G4double z_grid=thickness_grid/2.0;
168 177
169 fSolidGridVol= new G4Box("GridVolume",x_grid << 178 solidGridVol= new G4Box("GridVolume",x_grid,y_grid,z_grid); //its size
170 179
171 fLogicGridVol = new G4LogicalVolume(fSolidGr << 180 logicGridVol = new G4LogicalVolume(solidGridVol, //its solid
172 fGridMaterial, //its << 181 gridMaterial, //its material
173 "GridVolume"); //its name << 182 "GridVolume"); //its name
174 183
175 fPhysiGridVol = new G4PVPlacement(0, << 184 physiGridVol = new G4PVPlacement(0, //no rotation
176 G4ThreeVector(0,0,grid_Zpos), // o 185 G4ThreeVector(0,0,grid_Zpos), // origin
177 fLogicGridVol << 186 logicGridVol, //its logical volume
178 "GridVolume", 187 "GridVolume", //its name
179 fLogicWorld, << 188 logicWorld, //its mother volume
180 false, 189 false, //no boolean operation
181 0); 190 0);
182 191
183 // Holes in grid 192 // Holes in grid
184 193
185 G4double holeSize= 9e-3*mm; 194 G4double holeSize= 9e-3*mm;
186 G4double pix_grid=1.3e-2*mm; 195 G4double pix_grid=1.3e-2*mm;
187 G4int num_half_grid=100; 196 G4int num_half_grid=100;
188 197
189 fSolidGridVol_Hole= new G4Box("GridHole",hol << 198 solidGridVol_Hole= new G4Box("GridHole",holeSize/2,holeSize/2,z_grid); //its size
190 199
191 fLogicGridVol_Hole = new G4LogicalVolume(fSo << 200 logicGridVol_Hole = new G4LogicalVolume(solidGridVol_Hole, //its solid
192 fDefaultMaterial, << 201 defaultMaterial, //its material
193 "GridHole"); << 202 "GridHole"); //its name
194 203
195 204
196 for(int i=-num_half_grid;i<num_half_grid;i++ 205 for(int i=-num_half_grid;i<num_half_grid;i++)
197 { 206 {
198 for (int j=-num_half_grid;j<num_half_gri 207 for (int j=-num_half_grid;j<num_half_grid;j++)
199 { 208 {
200 209
201 G4double x0_grid,y0_grid,z0_grid; 210 G4double x0_grid,y0_grid,z0_grid;
202 G4int number_index_grid; 211 G4int number_index_grid;
203 212
204 x0_grid=pix_grid*i; 213 x0_grid=pix_grid*i;
205 y0_grid=pix_grid*j; 214 y0_grid=pix_grid*j;
206 z0_grid=0.0*mm; 215 z0_grid=0.0*mm;
207 216
208 number_index_grid=(i+num_half_grid)*1000+( 217 number_index_grid=(i+num_half_grid)*1000+(j+num_half_grid);
209 218
210 fPhysiGridVol_Hole = new G4PVPlacement( << 219 physiGridVol_Hole = new G4PVPlacement(0, //no rotation
211 G4ThreeVector(x0_grid,y0_grid,z0_gr 220 G4ThreeVector(x0_grid,y0_grid,z0_grid),//origin
212 fLogicGridVol << 221 logicGridVol_Hole, //its logical volume
213 "GridHole", //its name 222 "GridHole", //its name
214 fLogicGridVol << 223 logicGridVol, //its mother volume
215 false, 224 false, //no boolean operation
216 number_index_ 225 number_index_grid);
217 } 226 }
218 } 227 }
219 228
220 // Grid imaging plane 229 // Grid imaging plane
221 230
222 G4double ContVolSizeXY = 1*m; 231 G4double ContVolSizeXY = 1*m;
223 G4double ImPlaneWidth = 0.001*mm; 232 G4double ImPlaneWidth = 0.001*mm;
224 233
225 fSolidControlVol_GridShadow = << 234 solidControlVol_GridShadow =
226 new G4Box 235 new G4Box
227 ("ControlVol_GridShadow", ContVolSizeXY/2, 236 ("ControlVol_GridShadow", ContVolSizeXY/2, ContVolSizeXY/2 , ImPlaneWidth/2);
228 237
229 fLogicControlVol_GridShadow = << 238 logicControlVol_GridShadow =
230 new G4LogicalVolume 239 new G4LogicalVolume
231 (fSolidControlVol_GridShadow, fDefaultMate << 240 (solidControlVol_GridShadow, defaultMaterial, "ControlVol_GridShadow");
232 241
233 fPhysiControlVol_GridShadow = << 242 physiControlVol_GridShadow =
234 new G4PVPlacement 243 new G4PVPlacement
235 ( 0, G4ThreeVector(0,0,(250+300)*mm), fLog << 244 ( 0, G4ThreeVector(0,0,(250+300)*mm), logicControlVol_GridShadow, "ControlVol_GridShadow",logicWorld, false, 0);
236 fLogicWorld, false, 0); <<
237 245
238 246
239 } // end GRID 247 } // end GRID
240 248
241 // STEP MINIMUM SIZE 249 // STEP MINIMUM SIZE
242 fLogicVol->SetUserLimits(new G4UserLimits(1* << 250 logicVol->SetUserLimits(new G4UserLimits(1*mm));
243 251
244 return fPhysiWorld; << 252 return physiWorld;
245 } 253 }
246 254
247 //....oooOO0OOooo........oooOO0OOooo........oo 255 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
248 256
249 void DetectorConstruction::SetG1(G4float value 257 void DetectorConstruction::SetG1(G4float value)
250 { 258 {
251 fG1 = value; << 259 G1 = value;
252 G4RunManager::GetRunManager()->ReinitializeG <<
253 } 260 }
254 261
255 //....oooOO0OOooo........oooOO0OOooo........oo 262 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
256 263
257 void DetectorConstruction::SetG2(G4float value 264 void DetectorConstruction::SetG2(G4float value)
258 { 265 {
259 fG2 = value; << 266 G2 = value;
260 G4RunManager::GetRunManager()->ReinitializeG <<
261 } 267 }
262 268
263 //....oooOO0OOooo........oooOO0OOooo........oo 269 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
264 270
265 void DetectorConstruction::SetG3(G4float value 271 void DetectorConstruction::SetG3(G4float value)
266 { 272 {
267 fG3 = value; << 273 G3 = value;
268 G4RunManager::GetRunManager()->ReinitializeG <<
269 } 274 }
270 275
271 //....oooOO0OOooo........oooOO0OOooo........oo 276 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
272 277
273 void DetectorConstruction::SetG4(G4float value 278 void DetectorConstruction::SetG4(G4float value)
274 { 279 {
275 fG4 = value; << 280 G4 = value;
276 G4RunManager::GetRunManager()->ReinitializeG <<
277 } 281 }
278 282
279 //....oooOO0OOooo........oooOO0OOooo........oo 283 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
280 284
281 void DetectorConstruction::SetModel(G4int mode 285 void DetectorConstruction::SetModel(G4int modelChoice)
282 { 286 {
283 if (modelChoice==1) fModel=1; << 287 if (modelChoice==1) model=1;
284 if (modelChoice==2) fModel=2; << 288 if (modelChoice==2) model=2;
285 if (modelChoice==3) fModel=3; << 289 if (modelChoice==3) model=3;
286 G4RunManager::GetRunManager()->ReinitializeG <<
287 } 290 }
288 291
289 //....oooOO0OOooo........oooOO0OOooo........oo 292 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
290 293
291 void DetectorConstruction::SetCoef(G4int val) << 294 #include "G4RunManager.hh"
>> 295
>> 296 void DetectorConstruction::UpdateGeometry()
292 { 297 {
293 fCoef=val; << 298 gradientsInitialized=true;
294 G4RunManager::GetRunManager()->ReinitializeG << 299 G4RunManager::GetRunManager()->DefineWorldVolume(ConstructVolumes());
295 } 300 }
296 301
>> 302
297 //....oooOO0OOooo........oooOO0OOooo........oo 303 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
298 304
299 G4int DetectorConstruction::GetCoef() << 305 void DetectorConstruction::SetCoef()
300 { 306 {
301 return fCoef; << 307 coef=1;
302 } 308 }
303 309
304 //....oooOO0OOooo........oooOO0OOooo........oo 310 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
305 311
306 void DetectorConstruction::SetProfile(G4int my << 312 G4int DetectorConstruction::GetCoef()
307 { 313 {
308 fProfile=myProfile; << 314 return coef;
309 G4RunManager::GetRunManager()->ReinitializeG <<
310 } 315 }
311 316
312 //....oooOO0OOooo........oooOO0OOooo........oo 317 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
313 318
314 void DetectorConstruction::SetGrid(G4int myGri << 319 void DetectorConstruction::SetProfile(G4int myProfile)
315 { 320 {
316 fGrid=myGrid; << 321 profile=myProfile;
317 G4RunManager::GetRunManager()->ReinitializeG <<
318 } 322 }
319 323
320 //....oooOO0OOooo........oooOO0OOooo........oo 324 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
321 325
322 void DetectorConstruction::ConstructSDandField << 326 void DetectorConstruction::SetGrid(G4int myGrid)
323 { 327 {
324 fField = new TabulatedField3D(fG1, fG2, << 328 grid=myGrid;
325 <<
326 //This is thread-local <<
327 G4FieldManager* fFieldMgr = <<
328 G4TransportationManager::GetTransportationMa <<
329 <<
330 G4Mag_UsualEqRhs* fEquation = new G4Mag_ <<
331 <<
332 G4ClassicalRK4* fStepper = new G4Classic <<
333 <<
334 G4ChordFinder* fChordFinder = new G4Chor <<
335 <<
336 fFieldMgr->SetChordFinder(fChordFinder); <<
337 fFieldMgr->SetDetectorField(fField); <<
338 <<
339 // SI: 01-07-2018 : following settings w <<
340 // instead of 1e-9*m, but they now indu <<
341 // *** G4Exception : GeomNav1002 <<
342 // issued by : G4PropagatorInField::Com <<
343 <<
344 fFieldMgr->GetChordFinder()->SetDeltaCho <<
345 fFieldMgr->SetDeltaIntersection(1e-7*m); <<
346 fFieldMgr->SetDeltaOneStep(1e-7*m); <<
347 <<
348 // <<
349 <<
350 // To avoid G4MagIntegratorDriver::OneGo <<
351 <<
352 if (fCoef==1) <<
353 { <<
354 G4PropagatorInField* fPropInField = <<
355 G4TransportationManager::GetTranspor <<
356 fPropInField->SetMinimumEpsilonStep(1e <<
357 fPropInField->SetMaximumEpsilonStep(1e <<
358 <<
359 } <<
360 else <<
361 { <<
362 G4PropagatorInField* fPropInField = <<
363 G4TransportationManager::GetTranspor <<
364 fPropInField->SetMinimumEpsilonStep(1e <<
365 fPropInField->SetMaximumEpsilonStep(1e <<
366 } <<
367 <<
368 } 329 }
369 330
370 331