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25 //
26 // Gorad (Geant4 Open-source Radiation Analysis and Design)
27 //
28 // Author : Makoto Asai (SLAC National Accelerator Laboratory)
29 //
30 // Development of Gorad is funded by NASA Johnson Space Center (JSC)
31 // under the contract NNJ15HK11B.
32 //
33 // ********************************************************************
34 //
35 // GRGeomImpBiasWorld.cc
36 // A parallel world class that defines the geometry
37 // of the geometry improtance biasing.
38 //
39 // History
40 // September 8th, 2020 : first implementation
41 //
42 // ********************************************************************
43
44 #include "GRGeomImpBiasWorld.hh"
45 #include "GRDetectorConstruction.hh"
46
47 #include "G4Orb.hh"
48 #include "G4LogicalVolume.hh"
49 #include "G4VPhysicalVolume.hh"
50 #include "G4PVPlacement.hh"
51
52 #include "G4Region.hh"
53 #include "GRBiasingRegionInfo.hh"
54
55 #include "G4UIcommand.hh"
56 #include "G4VisAttributes.hh"
57
58 GRGeomImpBiasWorld::GRGeomImpBiasWorld(G4String& wName,GRDetectorConstruction* det)
59 : G4VUserParallelWorld(wName),detector(det)
60 {
61 stateNotifier = new GRGeomImpBiasWorldStateNotifier(this);
62 }
63
64 GRGeomImpBiasWorld::~GRGeomImpBiasWorld()
65 {
66 delete stateNotifier;
67 }
68
69 void GRGeomImpBiasWorld::Construct()
70 {
71 if(constructed) return;
72
73 constructed = true;
74 fWorld = GetWorld(); //physical volume of the world volume of parallel world
75 G4LogicalVolume* motherLog = fWorld->GetLogicalVolume();
76 biasingRegion = new G4Region(fWorldName+"_Region");
77 auto biasInfo = new GRBiasingRegionInfo();
78 biasingRegion->SetUserInformation(biasInfo);
79 biasingRegion->AddRootLogicalVolume(motherLog);
80 biasingRegion->SetWorld(fWorld);
81 G4VisAttributes* wvisatt = new G4VisAttributes(G4Colour(.2,.2,0.));
82 wvisatt->SetVisibility(false);
83 motherLog->SetVisAttributes(wvisatt);
84
85 G4double r0 = detector->geoImpP.radius;
86 if(r0 < 0.)
87 {
88 // radius of the outermost sphere is not specified, so seting it to the default
89 // value as the 80% of the world volume.
90 r0 = GRDetectorConstruction::GetWorldSize() * 0.8;
91 G4cout<<"############ Radius of the outermost biasing sphere is set to "<<r0<<" (mm)"<<G4endl;
92 }
93
94 G4int nL = detector->geoImpP.nLayer;
95 G4ThreeVector dp = (detector->geoImpP.posT - detector->geoImpP.pos0) / (nL-1);
96 G4double rt = detector->geoImpP.radiusT;
97 if(rt<0.)
98 { rt = r0/nL; }
99 G4double dr = (r0 - rt)/(nL-1);
100
101 for(G4int i=0;i<nL;i++)
102 {
103 G4double r = r0 - dr*i;
104 G4String vName = fWorldName + "_" + G4UIcommand::ConvertToString(i);
105 auto sph = new G4Orb(vName+"_solid",r);
106 auto lv = new G4LogicalVolume(sph,nullptr,vName+"_lv");
107 G4ThreeVector pos = detector->geoImpP.pos0;
108 if(i!=0) pos = dp;
109 new G4PVPlacement(0,pos,lv,vName+"_pv",motherLog,false,i+1);
110 motherLog = lv;
111 G4VisAttributes* visatt = new G4VisAttributes(G4Colour(.7,.7,0.));
112 visatt->SetVisibility(true);
113 lv->SetVisAttributes(visatt);
114 }
115
116 return;
117 }
118
119 void GRGeomImpBiasWorld::ConstructSD()
120 { ; }
121
122 void GRGeomImpBiasWorld::Update()
123 {
124 GRBiasingRegionInfo* biasInfo = static_cast<GRBiasingRegionInfo*>(biasingRegion->GetUserInformation());
125 biasInfo->SetBiasingFactor(detector->geoImpP.factor);
126 biasInfo->SetProbability(detector->geoImpP.prob);
127 }
128
129
130