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25 //
26 //
27 //---------------------------------------------------------------------------
28 //
29 // ClassName: G4LowECapture
30 //
31 // Author: V.Ivanchenko 31 August 2010
32 //
33 //----------------------------------------------------------------------------
34 //
35 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
36 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
37
38 #include "G4LowECapture.hh"
39 #include "G4SystemOfUnits.hh"
40 #include "G4ParticleDefinition.hh"
41 #include "G4Step.hh"
42 #include "G4Track.hh"
43 #include "G4Region.hh"
44 #include "G4RegionStore.hh"
45
46 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
47
48 G4LowECapture::G4LowECapture(G4double ekinlim)
49 : G4VDiscreteProcess("Capture", fElectromagnetic),
50 kinEnergyThreshold(ekinlim), nRegions(0), isIon(false)
51 {}
52
53 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
54
55 G4LowECapture::~G4LowECapture()
56 {}
57
58 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
59
60 void G4LowECapture::SetKinEnergyLimit(G4double val)
61 {
62 kinEnergyThreshold = val;
63 if(verboseLevel > 0) {
64 G4cout << "### G4LowECapture: Tracking cut E(MeV) = "
65 << kinEnergyThreshold/MeV << G4endl;
66 }
67 }
68
69 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
70
71 void G4LowECapture::AddRegion(const G4String& nam)
72 {
73 G4String r = nam;
74 if(r == "" || r == "world" || r == "World") r = "DefaultRegionForTheWorld";
75 for(G4int i=0; i<nRegions; ++i) {
76 if(regionName[i] == r) { return; }
77 }
78 regionName.push_back(r);
79 ++nRegions;
80 if(verboseLevel > 1) {
81 G4cout << "### G4LowECapture: new G4Region <" << r << ">" << G4endl;
82 }
83 }
84
85 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
86
87 void G4LowECapture::BuildPhysicsTable(const G4ParticleDefinition& part)
88 {
89 G4RegionStore* store = G4RegionStore::GetInstance();
90 for(G4int i=0; i<nRegions; ++i) {
91 const G4Region* r = store->GetRegion(regionName[i]);
92 if(r && verboseLevel > 0) {
93 G4cout << "### G4LowECapture: new G4Region <"
94 << regionName[i] << "> with tracking cut "
95 << kinEnergyThreshold/keV << " keV" << G4endl;
96 }
97 if(r) { region.push_back(r); }
98 }
99 nRegions = (G4int)region.size();
100
101 // ions reusing G4GenericIon parameters
102 if(part.GetParticleType() == "nucleus") {
103 G4String pname = part.GetParticleName();
104 if(pname != "deuteron" && pname != "triton" &&
105 pname != "alpha" && pname != "He3" &&
106 pname != "alpha+" && pname != "helium" &&
107 pname != "hydrogen") { isIon = true; }
108 }
109 }
110
111 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
112
113 G4bool G4LowECapture::IsApplicable(const G4ParticleDefinition&)
114 {
115 return true;
116 }
117
118 G4double G4LowECapture::PostStepGetPhysicalInteractionLength(
119 const G4Track& aTrack, G4double, G4ForceCondition* condition)
120 {
121 *condition = NotForced;
122 G4double limit = DBL_MAX;
123 G4double eLimit = kinEnergyThreshold;
124 if(isIon) {
125 eLimit *= aTrack.GetDefinition()->GetPDGMass()/CLHEP::proton_mass_c2;
126 }
127 if(aTrack.GetKineticEnergy() < eLimit) {
128 for(G4int i=0; i<nRegions; ++i) {
129 if(aTrack.GetVolume()->GetLogicalVolume()->GetRegion() == region[i]) {
130 limit = 0.0;
131 break;
132 }
133 }
134 }
135 return limit;
136 }
137
138 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
139
140 G4VParticleChange* G4LowECapture::PostStepDoIt(const G4Track& aTrack,
141 const G4Step&)
142 {
143 pParticleChange->Initialize(aTrack);
144 pParticleChange->ProposeTrackStatus(fStopAndKill);
145 pParticleChange->ProposeLocalEnergyDeposit(aTrack.GetKineticEnergy());
146 return pParticleChange;
147 }
148
149 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
150
151 G4double G4LowECapture::GetMeanFreePath(const G4Track&, G4double,
152 G4ForceCondition*)
153 {
154 return DBL_MAX;
155 }
156
157 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
158
159
160