| Geant4 Cross Reference |
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25 // 22 //
26 #include "globals.hh" 23 #include "globals.hh"
27 #include "G4GammaParticipants.hh" 24 #include "G4GammaParticipants.hh"
28 #include "G4LorentzVector.hh" 25 #include "G4LorentzVector.hh"
29 #include "G4V3DNucleus.hh" <<
30 #include <utility> 26 #include <utility>
31 27
32 // Class G4GammaParticipants 28 // Class G4GammaParticipants
33 29
34 //#define debugGammaParticipants << 30 // J.P. Wellisch, April 2002
>> 31 // new participants class for gamma nuclear, with this design more can come with
>> 32 // cross-section based, and quasi-eiconal model based modelling
35 33
36 G4VSplitableHadron* G4GammaParticipants::Selec 34 G4VSplitableHadron* G4GammaParticipants::SelectInteractions(const G4ReactionProduct &thePrimary)
37 { 35 {
38 // Check reaction threshold - goes to Check << 36 // Check reaction threshold - goes to CheckThreshold
>> 37 G4VSplitableHadron* aProjectile = new G4QGSMSplitableHadron(thePrimary, TRUE); // @@@ check the TRUE
39 38
40 theProjectileSplitable = new G4QGSMSplitable << 39 const std::vector<G4Nucleon *> & theTargetNuc = theNucleus->GetNucleons();
41 theProjectileSplitable->SetStatus(1); << 40 G4LorentzVector aPrimaryMomentum(thePrimary.GetMomentum(), thePrimary.GetTotalEnergy());
42 << 41 if((!(aPrimaryMomentum.e()>-1)) && (!(aPrimaryMomentum.e()<1)) )
43 G4LorentzVector aPrimaryMomentum(thePrimary. << 42 {
44 G4LorentzVector aTargetNMomentum(0.,0.,0.,93 << 43 throw G4HadronicException(__FILE__, __LINE__,
45 if((!(aPrimaryMomentum.e()>-1)) && (!(aPrima << 44 "G4GammaParticipants::SelectInteractions: primary nan energy.");
46 { << 45 }
47 throw G4HadronicException(__FILE__, __LINE << 46 G4double s = (aPrimaryMomentum + theTargetNuc[0]->Get4Momentum()).mag2();
48 "G4GammaParticipants::SelectInteractio << 47 G4double ThresholdMass = thePrimary.GetMass() + theTargetNuc[0]->GetDefinition()->GetPDGMass();
49 } << 48 ModelMode = SOFT;
50 G4double S = (aPrimaryMomentum + aTargetNMom << 49 if (sqr(ThresholdMass + ThersholdParameter) > s)
51 G4double ThresholdMass = thePrimary.GetMass( << 50 {
52 ModelMode = SOFT; << 51 throw G4HadronicException(__FILE__, __LINE__, "Initial energy is too low. The 4-vectors of the input are inconsistant with the particle masses.");
53 << 52 }
54 #ifdef debugGammaParticipants << 53 if (sqr(ThresholdMass + QGSMThershold) > s) // thus only diffractive in cascade!
55 G4cout <<G4endl<< "Gamma Participants - Se << 54 {
56 G4cout << "Energy and Nucleus << 55 ModelMode = DIFFRACTIVE;
57 G4cout << "SqrtS ThresholdMass ModelMode " << 56 }
58 G4cout << "ThresholdParameter << 57
59 #endif << 58 // first find the collisions HPW
60 << 59 std::for_each(theInteractions.begin(), theInteractions.end(), DeleteInteractionContent());
61 << 60 theInteractions.clear();
62 if (sqr(ThresholdMass + ThresholdParameter) << 61 G4int totalCuts = 0;
63 { << 62
64 ModelMode = DIFFRACTIVE; << 63 #ifdef debug_G4GammaParticipants
65 } << 64 G4double eK = thePrimary.GetKineticEnergy()/GeV;
66 << 65 G4int nucleonCount = theTargetNuc.size(); // debug
67 if (sqr(ThresholdMass + QGSMThreshold) > S) << 66 #endif
68 { << 67
69 ModelMode = DIFFRACTIVE; << 68 G4int theCurrent = static_cast<G4int> (theTargetNuc.size()*G4UniformRand());
70 } << 69 G4Nucleon * pNucleon = theTargetNuc[theCurrent];
71 << 70 G4QGSMSplitableHadron* aTarget = new G4QGSMSplitableHadron(*pNucleon);
72 #ifdef debugGammaParticipants << 71 theTargets.push_back(aTarget);
73 G4cout << "Interaction type (ModelMode) 0 << 72 pNucleon->Hit(aTarget);
74 #endif << 73 if ( (0.06 > G4UniformRand() &&(ModelMode==SOFT)) || (ModelMode==DIFFRACTIVE ) )
75 << 74 {
76 std::for_each(theInteractions.begin(), theIn << 75 // diffractive interaction occurs
77 theInteractions.clear(); << 76 if(IsSingleDiffractive())
78 << 77 {
79 // #ifdef debug_G4GammaParticipants << 78 theSingleDiffExcitation.ExciteParticipants(aProjectile, aTarget);
80 // G4double eK = thePrimary.GetKineticEnerg << 79 }
81 // G4int nucleonCount = theNucleus->GetMass << 80 else
82 // #endif << 81 {
83 << 82 theDiffExcitaton.ExciteParticipants(aProjectile, aTarget);
84 G4int theCurrent = G4int(theNucleus->GetMass << 83 }
85 G4int NucleonNo=0; << 84 G4InteractionContent * aInteraction = new G4InteractionContent(aProjectile);
86 << 85 aInteraction->SetTarget(aTarget);
87 theNucleus->StartLoop(); << 86 theInteractions.push_back(aInteraction);
88 G4Nucleon * pNucleon =0; << 87 aInteraction->SetNumberOfDiffractiveCollisions(1);
89 << 88 totalCuts += 1;
90 while( (pNucleon = theNucleus->GetNext << 89 }
91 << 90 else
92 if ( pNucleon ) { << 91 {
93 << 92 // nondiffractive soft interaction occurs
94 G4QGSMSplitableHadron* aTarget = new G4QGS << 93 aTarget->IncrementCollisionCount(1);
95 pNucleon->Hit(aTarget); << 94 aProjectile->IncrementCollisionCount(1);
96 << 95 G4InteractionContent * aInteraction = new G4InteractionContent(aProjectile);
97 if( (0.06 > G4UniformRand() &&(ModelMode== << 96 aInteraction->SetTarget(aTarget);
98 { // Diffractive interaction << 97 aInteraction->SetNumberOfSoftCollisions(1);
99 G4InteractionContent * aInteraction << 98 theInteractions.push_back(aInteraction);
100 theProjectileSplitable->SetStatus(1* << 99 totalCuts += 1;
101 << 100 }
102 aInteraction->SetTarget(aTarget); << 101 return aProjectile;
103 aInteraction->SetTargetNucleon(pNucl <<
104 aTarget->SetCollisionCount(0); <<
105 aTarget->SetStatus(1); <<
106 <<
107 aInteraction->SetNumberOfDiffractive <<
108 aInteraction->SetNumberOfSoftCollisi <<
109 aInteraction->SetStatus(1); <<
110 <<
111 theInteractions.push_back(aInteracti <<
112 } <<
113 else <<
114 { <<
115 // nondiffractive soft interaction occurs <<
116 aTarget->IncrementCollisionCount(1); <<
117 aTarget->SetStatus(0); <<
118 theTargets.push_back(aTarget); <<
119 <<
120 theProjectileSplitable->IncrementCollision <<
121 theProjectileSplitable->SetStatus(0* <<
122 <<
123 G4InteractionContent * aInteraction = <<
124 new <<
125 aInteraction->SetTarget(aTarget); <<
126 aInteraction->SetTargetNucleon(pNucl <<
127 aInteraction->SetNumberOfSoftCollisions(1) <<
128 aInteraction->SetStatus(0); <<
129 theInteractions.push_back(aInteraction); <<
130 } <<
131 } <<
132 return theProjectileSplitable; <<
133 } 102 }
134 103