Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/examples/extended/electromagnetic/TestEm11/src/DetectorConstruction.cc

Version: [ ReleaseNotes ] [ 1.0 ] [ 1.1 ] [ 2.0 ] [ 3.0 ] [ 3.1 ] [ 3.2 ] [ 4.0 ] [ 4.0.p1 ] [ 4.0.p2 ] [ 4.1 ] [ 4.1.p1 ] [ 5.0 ] [ 5.0.p1 ] [ 5.1 ] [ 5.1.p1 ] [ 5.2 ] [ 5.2.p1 ] [ 5.2.p2 ] [ 6.0 ] [ 6.0.p1 ] [ 6.1 ] [ 6.2 ] [ 6.2.p1 ] [ 6.2.p2 ] [ 7.0 ] [ 7.0.p1 ] [ 7.1 ] [ 7.1.p1 ] [ 8.0 ] [ 8.0.p1 ] [ 8.1 ] [ 8.1.p1 ] [ 8.1.p2 ] [ 8.2 ] [ 8.2.p1 ] [ 8.3 ] [ 8.3.p1 ] [ 8.3.p2 ] [ 9.0 ] [ 9.0.p1 ] [ 9.0.p2 ] [ 9.1 ] [ 9.1.p1 ] [ 9.1.p2 ] [ 9.1.p3 ] [ 9.2 ] [ 9.2.p1 ] [ 9.2.p2 ] [ 9.2.p3 ] [ 9.2.p4 ] [ 9.3 ] [ 9.3.p1 ] [ 9.3.p2 ] [ 9.4 ] [ 9.4.p1 ] [ 9.4.p2 ] [ 9.4.p3 ] [ 9.4.p4 ] [ 9.5 ] [ 9.5.p1 ] [ 9.5.p2 ] [ 9.6 ] [ 9.6.p1 ] [ 9.6.p2 ] [ 9.6.p3 ] [ 9.6.p4 ] [ 10.0 ] [ 10.0.p1 ] [ 10.0.p2 ] [ 10.0.p3 ] [ 10.0.p4 ] [ 10.1 ] [ 10.1.p1 ] [ 10.1.p2 ] [ 10.1.p3 ] [ 10.2 ] [ 10.2.p1 ] [ 10.2.p2 ] [ 10.2.p3 ] [ 10.3 ] [ 10.3.p1 ] [ 10.3.p2 ] [ 10.3.p3 ] [ 10.4 ] [ 10.4.p1 ] [ 10.4.p2 ] [ 10.4.p3 ] [ 10.5 ] [ 10.5.p1 ] [ 10.6 ] [ 10.6.p1 ] [ 10.6.p2 ] [ 10.6.p3 ] [ 10.7 ] [ 10.7.p1 ] [ 10.7.p2 ] [ 10.7.p3 ] [ 10.7.p4 ] [ 11.0 ] [ 11.0.p1 ] [ 11.0.p2 ] [ 11.0.p3, ] [ 11.0.p4 ] [ 11.1 ] [ 11.1.1 ] [ 11.1.2 ] [ 11.1.3 ] [ 11.2 ] [ 11.2.1 ] [ 11.2.2 ] [ 11.3.0 ]

Diff markup

Differences between /examples/extended/electromagnetic/TestEm11/src/DetectorConstruction.cc (Version 11.3.0) and /examples/extended/electromagnetic/TestEm11/src/DetectorConstruction.cc (Version 9.3.p2)


  1 //                                                  1 //
  2 // *******************************************      2 // ********************************************************************
  3 // * License and Disclaimer                         3 // * License and Disclaimer                                           *
  4 // *                                                4 // *                                                                  *
  5 // * The  Geant4 software  is  copyright of th      5 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
  6 // * the Geant4 Collaboration.  It is provided      6 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
  7 // * conditions of the Geant4 Software License      7 // * conditions of the Geant4 Software License,  included in the file *
  8 // * LICENSE and available at  http://cern.ch/      8 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
  9 // * include a list of copyright holders.           9 // * include a list of copyright holders.                             *
 10 // *                                               10 // *                                                                  *
 11 // * Neither the authors of this software syst     11 // * Neither the authors of this software system, nor their employing *
 12 // * institutes,nor the agencies providing fin     12 // * institutes,nor the agencies providing financial support for this *
 13 // * work  make  any representation or  warran     13 // * work  make  any representation or  warranty, express or implied, *
 14 // * regarding  this  software system or assum     14 // * regarding  this  software system or assume any liability for its *
 15 // * use.  Please see the license in the file      15 // * use.  Please see the license in the file  LICENSE  and URL above *
 16 // * for the full disclaimer and the limitatio     16 // * for the full disclaimer and the limitation of liability.         *
 17 // *                                               17 // *                                                                  *
 18 // * This  code  implementation is the result      18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboratio     19 // * technical work of the GEANT4 collaboration.                      *
 20 // * By using,  copying,  modifying or  distri     20 // * By using,  copying,  modifying or  distributing the software (or *
 21 // * any work based  on the software)  you  ag     21 // * any work based  on the software)  you  agree  to acknowledge its *
 22 // * use  in  resulting  scientific  publicati     22 // * use  in  resulting  scientific  publications,  and indicate your *
 23 // * acceptance of all terms of the Geant4 Sof     23 // * acceptance of all terms of the Geant4 Software license.          *
 24 // *******************************************     24 // ********************************************************************
 25 //                                                 25 //
 26 /// \file electromagnetic/TestEm11/src/Detecto <<  26 // $Id: DetectorConstruction.cc,v 1.9 2009/11/16 15:09:10 maire Exp $
 27 /// \brief Implementation of the DetectorConst <<  27 // GEANT4 tag $Name: geant4-09-03-patch-02 $
 28 //                                             <<  28 
 29 //                                                 29 //
 30 //....oooOO0OOooo........oooOO0OOooo........oo     30 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 31 //....oooOO0OOooo........oooOO0OOooo........oo     31 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 32                                                    32 
 33 #include "DetectorConstruction.hh"                 33 #include "DetectorConstruction.hh"
 34                                                << 
 35 #include "DetectorMessenger.hh"                    34 #include "DetectorMessenger.hh"
 36                                                    35 
 37 #include "G4AutoDelete.hh"                     <<  36 #include "G4NistManager.hh"
 38 #include "G4Box.hh"                                37 #include "G4Box.hh"
 39 #include "G4GeometryManager.hh"                << 
 40 #include "G4GlobalMagFieldMessenger.hh"        << 
 41 #include "G4LogicalVolume.hh"                      38 #include "G4LogicalVolume.hh"
 42 #include "G4LogicalVolumeStore.hh"             <<  39 #include "G4VPhysicalVolume.hh"
 43 #include "G4Material.hh"                       << 
 44 #include "G4NistManager.hh"                    << 
 45 #include "G4PVPlacement.hh"                        40 #include "G4PVPlacement.hh"
 46 #include "G4PVReplica.hh"                          41 #include "G4PVReplica.hh"
 47 #include "G4PhysicalConstants.hh"              <<  42 #include "G4UniformMagField.hh"
                                                   >>  43 
                                                   >>  44 #include "G4GeometryManager.hh"
 48 #include "G4PhysicalVolumeStore.hh"                45 #include "G4PhysicalVolumeStore.hh"
 49 #include "G4RunManager.hh"                     <<  46 #include "G4LogicalVolumeStore.hh"
 50 #include "G4SolidStore.hh"                         47 #include "G4SolidStore.hh"
 51 #include "G4SystemOfUnits.hh"                  << 
 52 #include "G4UImanager.hh"                      << 
 53 #include "G4UniformMagField.hh"                << 
 54 #include "G4UnitsTable.hh"                     << 
 55                                                    48 
 56 #include <iomanip>                             <<  49 #include "G4UnitsTable.hh"
 57                                                    50 
 58 //....oooOO0OOooo........oooOO0OOooo........oo     51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 59                                                    52 
 60 DetectorConstruction::DetectorConstruction()       53 DetectorConstruction::DetectorConstruction()
 61 {                                                  54 {
 62   // default parameter values of the absorbers <<  55   // default parameter values
 63   fNbOfAbsor = 1;                              <<  56   absorSizeX = absorSizeYZ = 1*mm;
 64   fAbsorThickness[0] = 0. * mm;  // dummy, for <<  57   nbOfLayers = 1;
 65   fAbsorThickness[1] = 1. * mm;                <<  58   
 66   fAbsorSizeYZ = 1. * mm;                      <<  59   absorMaterial = 0;
 67   for (G4int iAbs = 0; iAbs < kMaxAbsor; iAbs+ <<  60   magField = 0;
 68     fNbOfDivisions[iAbs] = 1;                  <<  61   pAbsor   = 0;
 69   }                                            <<  62   
 70   ComputeParameters();                         << 
 71                                                << 
 72   // materials                                 << 
 73   DefineMaterials();                               63   DefineMaterials();
 74   SetAbsorMaterial(1, "G4_Si");                <<  64   SetMaterial("G4_Si");
 75                                                    65 
 76   // create commands for interactive definitio <<  66   // create commands for interactive definition of the detector  
 77   fDetectorMessenger = new DetectorMessenger(t <<  67   detectorMessenger = new DetectorMessenger(this);
 78 }                                                  68 }
 79                                                    69 
 80 //....oooOO0OOooo........oooOO0OOooo........oo     70 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 81                                                    71 
 82 DetectorConstruction::~DetectorConstruction()      72 DetectorConstruction::~DetectorConstruction()
 83 {                                              <<  73 { delete detectorMessenger;}
 84   delete fDetectorMessenger;                   << 
 85 }                                              << 
 86                                                    74 
 87 //....oooOO0OOooo........oooOO0OOooo........oo     75 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 88                                                    76 
 89 G4VPhysicalVolume* DetectorConstruction::Const     77 G4VPhysicalVolume* DetectorConstruction::Construct()
 90 {                                                  78 {
 91   return ConstructVolumes();                       79   return ConstructVolumes();
 92 }                                                  80 }
 93                                                    81 
 94 //....oooOO0OOooo........oooOO0OOooo........oo     82 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 95                                                    83 
 96 void DetectorConstruction::DefineMaterials()       84 void DetectorConstruction::DefineMaterials()
 97 {                                              <<  85 { 
 98   G4NistManager* man = G4NistManager::Instance     86   G4NistManager* man = G4NistManager::Instance();
 99                                                <<  87   
100   man->FindOrBuildMaterial("G4_Al");           <<  88   G4bool isotopes = false;
101   man->FindOrBuildMaterial("G4_Si");           <<  89   
102   man->FindOrBuildMaterial("G4_Fe");           <<  90   man->FindOrBuildMaterial("G4_Al", isotopes);
103   man->FindOrBuildMaterial("G4_Cu");           <<  91   man->FindOrBuildMaterial("G4_Si", isotopes);
104   man->FindOrBuildMaterial("G4_Ge");           <<  92   man->FindOrBuildMaterial("G4_Fe", isotopes);
105   man->FindOrBuildMaterial("G4_Mo");           <<  93   man->FindOrBuildMaterial("G4_Cu", isotopes);  
106   man->FindOrBuildMaterial("G4_Ta");           <<  94   man->FindOrBuildMaterial("G4_Ge", isotopes);
107   man->FindOrBuildMaterial("G4_W");            <<  95   man->FindOrBuildMaterial("G4_Mo", isotopes);
108   man->FindOrBuildMaterial("G4_Au");           <<  96   man->FindOrBuildMaterial("G4_Ta", isotopes);
109   man->FindOrBuildMaterial("G4_Pb");           <<  97   man->FindOrBuildMaterial("G4_W" , isotopes);
110   man->FindOrBuildMaterial("G4_PbWO4");        <<  98   man->FindOrBuildMaterial("G4_Au", isotopes);
111   man->FindOrBuildMaterial("G4_SODIUM_IODIDE") <<  99   man->FindOrBuildMaterial("G4_Pb", isotopes);  
112                                                << 100   man->FindOrBuildMaterial("G4_PbWO4", isotopes);
113   man->FindOrBuildMaterial("G4_AIR");          << 101   man->FindOrBuildMaterial("G4_SODIUM_IODIDE", isotopes);
114   man->FindOrBuildMaterial("G4_WATER");        << 102   
115                                                << 103   man->FindOrBuildMaterial("G4_AIR"  , isotopes);
116   G4Element* H = man->FindOrBuildElement("H"); << 104   ///man->FindOrBuildMaterial("G4_WATER", isotopes);
117   G4Element* O = man->FindOrBuildElement("O"); << 105   
118                                                << 106   G4Element* H = man->FindOrBuildElement("H", isotopes); 
119   G4Material* H2O = new G4Material("Water", 1. << 107   G4Element* O = man->FindOrBuildElement("O", isotopes);
                                                   >> 108   
                                                   >> 109   G4Material* H2O = 
                                                   >> 110   new G4Material("Water", 1.000*g/cm3, 2);
120   H2O->AddElement(H, 2);                          111   H2O->AddElement(H, 2);
121   H2O->AddElement(O, 1);                          112   H2O->AddElement(O, 1);
122   H2O->GetIonisation()->SetMeanExcitationEnerg << 113   H2O->GetIonisation()->SetMeanExcitationEnergy(75.0*eV);
123                                                << 114         
124   G4double density = universe_mean_density;  / << 115  G4cout << *(G4Material::GetMaterialTable()) << G4endl;
125   G4double pressure = 3.e-18 * pascal;         << 
126   G4double temperature = 2.73 * kelvin;        << 
127   G4Material* Galactic =                       << 
128     new G4Material("Galactic", 1., 1.008 * g / << 
129                                                << 
130   fDefaultMaterial = Galactic;                 << 
131                                                << 
132   //  G4cout << *(G4Material::GetMaterialTable << 
133 }                                                 116 }
134                                                   117 
135 //....oooOO0OOooo........oooOO0OOooo........oo    118 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
136                                                << 119   
137 void DetectorConstruction::ComputeParameters() << 
138 {                                              << 
139   // Compute total thickness of absorbers      << 
140   fAbsorSizeX = 0.;                            << 
141   for (G4int iAbs = 1; iAbs <= fNbOfAbsor; iAb << 
142     fAbsorSizeX += fAbsorThickness[iAbs];      << 
143   }                                            << 
144 }                                              << 
145                                                << 
146 //....oooOO0OOooo........oooOO0OOooo........oo << 
147                                                << 
148 G4VPhysicalVolume* DetectorConstruction::Const    120 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
149 {                                                 121 {
150   // complete the Calor parameters definition  << 
151   ComputeParameters();                         << 
152                                                << 
153   // Cleanup old geometry                      << 
154   G4GeometryManager::GetInstance()->OpenGeomet    122   G4GeometryManager::GetInstance()->OpenGeometry();
155   G4PhysicalVolumeStore::GetInstance()->Clean(    123   G4PhysicalVolumeStore::GetInstance()->Clean();
156   G4LogicalVolumeStore::GetInstance()->Clean()    124   G4LogicalVolumeStore::GetInstance()->Clean();
157   G4SolidStore::GetInstance()->Clean();           125   G4SolidStore::GetInstance()->Clean();
158                                                << 126        
159   //                                           << 127   // Absorber
160   // World                                     << 
161   //                                           << 
162   G4Box* solidWorld = new G4Box("World",  // n << 
163                                 fAbsorSizeX /  << 
164                                                << 
165   G4LogicalVolume* logicWorld = new G4LogicalV << 
166                                                << 
167                                                << 
168                                                << 
169   fPhysiWorld = new G4PVPlacement(0,  // no ro << 
170                                   G4ThreeVecto << 
171                                   logicWorld,  << 
172                                   "World",  // << 
173                                   0,  // mothe << 
174                                   false,  // n << 
175                                   0);  // copy << 
176                                                << 
177   //                                              128   //
178   // Absorbers                                 << 129   G4Box* 
179   //                                           << 130   sAbsor = new G4Box("Absorber",        //name
180   fXfront[0] = -0.5 * fAbsorSizeX;             << 131          absorSizeX/2,absorSizeYZ/2,absorSizeYZ/2); //size
181   //                                           << 132 
182   for (G4int k = 1; k <= fNbOfAbsor; k++) {    << 133   G4LogicalVolume*
183     G4Material* material = fAbsorMaterial[k];  << 134   lAbsor = new G4LogicalVolume(sAbsor,      //solid
184     G4String matname = material->GetName();    << 135                    absorMaterial,   //material
185                                                << 136                   "Absorber");    //name
186     G4Box* solidAbsor =                        << 137            
187       new G4Box(matname, fAbsorThickness[k] /  << 138   pAbsor = new G4PVPlacement(0,       //no rotation
188                                                << 139                              G4ThreeVector(),   //at (0,0,0)
189     G4LogicalVolume* logicAbsor = new G4Logica << 140                              lAbsor,      //logical volume
190                                                << 141                             "Absorber",     //name
191                                                << 142                              0,       //mother  volume
192                                                << 143                              false,     //no boolean operation
193     fXfront[k] = fXfront[k - 1] + fAbsorThickn << 144                              0);      //copy number
194     G4double xcenter = fXfront[k] + 0.5 * fAbs << 145 
195     G4ThreeVector position = G4ThreeVector(xce << 146   // Layers
196                                                << 147   //
197     new G4PVPlacement(0,  // no rotation       << 148   layerThickness = absorSizeX/nbOfLayers;
198                       position,  // position   << 149   
199                       logicAbsor,  // logical  << 150   if (nbOfLayers > 1)  {                           
200                       matname,  // name        << 151            
201                       logicWorld,  // mother   << 152     G4Box*
202                       false,  // no boulean op << 153     sLayer = new G4Box("Layer",         //name
203                       k);  // copy number      << 154                  layerThickness/2,absorSizeYZ/2,absorSizeYZ/2); //dimensions
204                                                << 155      
205     // divisions, if any                       << 156     G4LogicalVolume*                                  
206     //                                         << 157     lLayer = new G4LogicalVolume(sLayer,    //shape
207     G4double LayerThickness = fAbsorThickness[ << 158                                  absorMaterial,   //material
208     G4Box* solidLayer = new G4Box(matname, Lay << 159                                  "Layer");    //name
209                                                << 160                                  
210     G4LogicalVolume* logicLayer = new G4Logica << 161              new G4PVReplica("Layer",     //name
211                                                << 162                            lLayer,      //logical volume
212                                                << 163                            lAbsor,            //mother  volume
213                                                << 164                            kXAxis,      //axis   of replica
214     new G4PVReplica(matname,  // name          << 165                            nbOfLayers,      //number of replica
215                     logicLayer,  // logical vo << 166                            layerThickness);   //width  of replica
216                     logicAbsor,  // mother     << 167   }        
217                     kXAxis,  // axis of replic << 
218                     fNbOfDivisions[k],  // num << 
219                     LayerThickness);  // witdt << 
220   }                                            << 
221                                                   168 
222   PrintParameters();                              169   PrintParameters();
223                                                << 170     
224   // always return the physical World          << 
225   //                                              171   //
226   return fPhysiWorld;                          << 172   //always return the root volume
                                                   >> 173   //  
                                                   >> 174   return pAbsor;
227 }                                                 175 }
228                                                   176 
229 //....oooOO0OOooo........oooOO0OOooo........oo    177 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
230                                                   178 
231 void DetectorConstruction::PrintParameters()      179 void DetectorConstruction::PrintParameters()
232 {                                                 180 {
233   G4cout << "\n------------------------------- << 181   G4cout << "\n---------------------------------------------------------\n";
234          << "\n ---> The Absorber is " << fNbO << 182   G4cout << "---> The Absorber is " << G4BestUnit(absorSizeX,"Length")
235   for (G4int i = 1; i <= fNbOfAbsor; i++) {    << 183          << " of " << absorMaterial->GetName() << " divided in " << nbOfLayers 
236     G4cout << "\n \t" << std::setw(16) << fAbs << 184    << " slices of " << G4BestUnit(layerThickness,"Length") << G4endl;
237            << G4BestUnit(fAbsorThickness[i], " << 185   G4cout << "\n---------------------------------------------------------\n";
238            << " slices";                       << 
239   }                                            << 
240   G4cout << "\n------------------------------- << 
241 }                                                 186 }
242                                                   187 
243 //....oooOO0OOooo........oooOO0OOooo........oo    188 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
244                                                   189 
245 void DetectorConstruction::SetNbOfAbsor(G4int  << 190 void DetectorConstruction::SetSizeX(G4double value)
246 {                                                 191 {
247   // set the number of Absorbers               << 192   absorSizeX = value;
248   //                                           << 
249   if (ival < 1 || ival > (kMaxAbsor - 1)) {    << 
250     G4cout << "\n ---> warning from SetfNbOfAb << 
251            << kMaxAbsor - 1 << ". Command refu << 
252     return;                                    << 
253   }                                            << 
254   fNbOfAbsor = ival;                           << 
255   G4RunManager::GetRunManager()->ReinitializeG << 
256 }                                                 193 }
257                                                << 194   
258 //....oooOO0OOooo........oooOO0OOooo........oo    195 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
259                                                   196 
260 void DetectorConstruction::SetAbsorMaterial(G4 << 197 void DetectorConstruction::SetSizeYZ(G4double value)
261 {                                                 198 {
262   // search the material by its name           << 199   absorSizeYZ = value; 
263   //                                           << 200 }  
264   if (iabs > fNbOfAbsor || iabs <= 0) {        << 
265     G4cout << "\n --->warning from SetfAbsorMa << 
266            << " out of range. Command refused" << 
267     return;                                    << 
268   }                                            << 
269                                                << 
270   G4Material* pttoMaterial = G4NistManager::In << 
271   if (pttoMaterial) {                          << 
272     fAbsorMaterial[iabs] = pttoMaterial;       << 
273     G4RunManager::GetRunManager()->PhysicsHasB << 
274     G4cout << "\n " << pttoMaterial << G4endl; << 
275   }                                            << 
276 }                                              << 
277                                                   201 
278 //....oooOO0OOooo........oooOO0OOooo........oo    202 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
279                                                   203 
280 void DetectorConstruction::SetAbsorThickness(G << 204 void DetectorConstruction::SetMaterial(G4String materialChoice)
281 {                                                 205 {
282   // change Absorber thickness                 << 206   // search the material by its name   
283   //                                           << 207   G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);     
284   if (iabs > fNbOfAbsor || iabs <= 0) {        << 208   if (pttoMaterial) absorMaterial = pttoMaterial;
285     G4cout << "\n --->warning from SetfAbsorTh << 
286            << " out of range. Command refused" << 
287     return;                                    << 
288   }                                            << 
289   if (val <= DBL_MIN) {                        << 
290     G4cout << "\n --->warning from SetfAbsorTh << 
291            << " out of range. Command refused" << 
292     return;                                    << 
293   }                                            << 
294   fAbsorThickness[iabs] = val;                 << 
295   G4RunManager::GetRunManager()->ReinitializeG << 
296 }                                                 209 }
297                                                   210 
298 //....oooOO0OOooo........oooOO0OOooo........oo    211 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
299                                                   212 
300 void DetectorConstruction::SetAbsorSizeYZ(G4do << 213 void DetectorConstruction::SetNbOfLayers(G4int value)
301 {                                                 214 {
302   // change the transverse size                << 215   nbOfLayers = value; 
303   //                                           << 
304   if (val <= DBL_MIN) {                        << 
305     G4cout << "\n --->warning from SetfAbsorSi << 
306            << " out of range. Command refused" << 
307     return;                                    << 
308   }                                            << 
309   fAbsorSizeYZ = val;                          << 
310   G4RunManager::GetRunManager()->ReinitializeG << 
311 }                                                 216 }
312                                                << 217  
313 //....oooOO0OOooo........oooOO0OOooo........oo    218 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
314                                                   219 
315 void DetectorConstruction::SetNbOfDivisions(G4 << 220 #include "G4FieldManager.hh"
                                                   >> 221 #include "G4TransportationManager.hh"
                                                   >> 222 
                                                   >> 223 void DetectorConstruction::SetMagField(G4double fieldValue)
316 {                                                 224 {
317   // set the number of divisions               << 225   //apply a global uniform magnetic field along Z axis
318   //                                           << 226   G4FieldManager* fieldMgr 
319   if (iabs > fNbOfAbsor || iabs < 1) {         << 227    = G4TransportationManager::GetTransportationManager()->GetFieldManager();
320     G4cout << "\n --->warning from SetNbOfDivi << 228     
321            << " out of range. Command refused" << 229   if (magField) delete magField;  //delete the existing magn field
322     return;                                    << 230   
323   }                                            << 231   if (fieldValue!=0.)     // create a new one if non nul
324                                                << 232     {
325   if (ival < 1) {                              << 233       magField = new G4UniformMagField(G4ThreeVector(0.,0.,fieldValue));        
326     G4cout << "\n --->warning from SetNbOfDivi << 234       fieldMgr->SetDetectorField(magField);
327            << " must be at least 1. Command re << 235       fieldMgr->CreateChordFinder(magField);
328     return;                                    << 236     }
329   }                                            << 237    else
330   fNbOfDivisions[iabs] = ival;                 << 238     {
331   G4RunManager::GetRunManager()->ReinitializeG << 239       magField = 0;
                                                   >> 240       fieldMgr->SetDetectorField(magField);
                                                   >> 241     }
332 }                                                 242 }
333                                                   243 
334 //....oooOO0OOooo........oooOO0OOooo........oo    244 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
335                                                   245 
336 void DetectorConstruction::ConstructSDandField << 246 #include "G4RunManager.hh" 
                                                   >> 247  
                                                   >> 248 void DetectorConstruction::UpdateGeometry()
337 {                                                 249 {
338   if (fFieldMessenger.Get() == 0) {            << 250 G4RunManager::GetRunManager()->DefineWorldVolume(ConstructVolumes());
339     // Create global magnetic field messenger. << 
340     // Uniform magnetic field is then created  << 
341     // the field value is not zero.            << 
342     G4ThreeVector fieldValue = G4ThreeVector() << 
343     G4GlobalMagFieldMessenger* msg = new G4Glo << 
344     // msg->SetVerboseLevel(1);                << 
345     G4AutoDelete::Register(msg);               << 
346     fFieldMessenger.Put(msg);                  << 
347   }                                            << 
348 }                                                 251 }
349                                                   252 
350 //....oooOO0OOooo........oooOO0OOooo........oo    253 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
351                                                   254