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25 // 25 //
26 #include "globals.hh" 26 #include "globals.hh"
27 #include "G4GammaParticipants.hh" 27 #include "G4GammaParticipants.hh"
28 #include "G4LorentzVector.hh" 28 #include "G4LorentzVector.hh"
29 #include "G4V3DNucleus.hh" 29 #include "G4V3DNucleus.hh"
30 #include <utility> 30 #include <utility>
31 31
32 // Class G4GammaParticipants 32 // Class G4GammaParticipants
33 33
34 //#define debugGammaParticipants << 34 // J.P. Wellisch, April 2002
>> 35 // new participants class for gamma nuclear, with this design more can come with
>> 36 // cross-section based, and quasi-eiconal model based modelling
>> 37 //
>> 38 // 20110805 M. Kelsey -- Follow change to G4V3DNucleus::GetNucleons()
35 39
36 G4VSplitableHadron* G4GammaParticipants::Selec 40 G4VSplitableHadron* G4GammaParticipants::SelectInteractions(const G4ReactionProduct &thePrimary)
37 { 41 {
38 // Check reaction threshold - goes to Check << 42 // Check reaction threshold - goes to CheckThreshold
>> 43 G4VSplitableHadron* aProjectile = new G4QGSMSplitableHadron(thePrimary, TRUE); // @@@ check the TRUE
39 44
40 theProjectileSplitable = new G4QGSMSplitable << 45 const std::vector<G4Nucleon>& theTargetNuc = theNucleus->GetNucleons();
41 theProjectileSplitable->SetStatus(1); << 46 G4LorentzVector aPrimaryMomentum(thePrimary.GetMomentum(), thePrimary.GetTotalEnergy());
42 << 47 if((!(aPrimaryMomentum.e()>-1)) && (!(aPrimaryMomentum.e()<1)) )
43 G4LorentzVector aPrimaryMomentum(thePrimary. << 48 {
44 G4LorentzVector aTargetNMomentum(0.,0.,0.,93 << 49 throw G4HadronicException(__FILE__, __LINE__,
45 if((!(aPrimaryMomentum.e()>-1)) && (!(aPrima << 50 "G4GammaParticipants::SelectInteractions: primary nan energy.");
46 { << 51 }
47 throw G4HadronicException(__FILE__, __LINE << 52 G4double S = (aPrimaryMomentum + theTargetNuc[0].Get4Momentum()).mag2();
48 "G4GammaParticipants::SelectInteractio << 53 G4double ThresholdMass = thePrimary.GetMass() + theTargetNuc[0].GetDefinition()->GetPDGMass();
49 } << 54 ModelMode = SOFT;
50 G4double S = (aPrimaryMomentum + aTargetNMom << 55 if (sqr(ThresholdMass + ThresholdParameter) > S)
51 G4double ThresholdMass = thePrimary.GetMass( << 56 {
52 ModelMode = SOFT; << 57 ModelMode = DIFFRACTIVE;
53 << 58 //throw G4HadronicException(__FILE__, __LINE__,
54 #ifdef debugGammaParticipants << 59 // "Initial energy is too low. The 4-vectors of the input are inconsistant with the particle masses.");
55 G4cout <<G4endl<< "Gamma Participants - Se << 60 }
56 G4cout << "Energy and Nucleus << 61 if (sqr(ThresholdMass + QGSMThreshold) > S) // thus only diffractive in cascade!
57 G4cout << "SqrtS ThresholdMass ModelMode " << 62 {
58 G4cout << "ThresholdParameter << 63 ModelMode = DIFFRACTIVE;
59 #endif << 64 }
60 << 65
61 << 66 // first find the collisions HPW
62 if (sqr(ThresholdMass + ThresholdParameter) << 67 std::for_each(theInteractions.begin(), theInteractions.end(), DeleteInteractionContent());
63 { << 68 theInteractions.clear();
64 ModelMode = DIFFRACTIVE; << 69 G4int totalCuts = 0;
65 } << 70
66 << 71 #ifdef debug_G4GammaParticipants
67 if (sqr(ThresholdMass + QGSMThreshold) > S) << 72 G4double eK = thePrimary.GetKineticEnergy()/GeV;
68 { << 73 G4int nucleonCount = theTargetNuc.size(); // debug
69 ModelMode = DIFFRACTIVE; << 74 #endif
70 } << 75
71 << 76 G4int theCurrent = static_cast<G4int> (theTargetNuc.size()*G4UniformRand());
72 #ifdef debugGammaParticipants << 77 const G4Nucleon& pNucleon = theTargetNuc[theCurrent];
73 G4cout << "Interaction type (ModelMode) 0 << 78 G4QGSMSplitableHadron* aTarget = new G4QGSMSplitableHadron(pNucleon);
74 #endif << 79 theTargets.push_back(aTarget);
75 << 80 const_cast<G4Nucleon&>(pNucleon).Hit(aTarget);
76 std::for_each(theInteractions.begin(), theIn << 81 if ( (0.06 > G4UniformRand() &&(ModelMode==SOFT)) || (ModelMode==DIFFRACTIVE ) )
77 theInteractions.clear(); << 82 {
78 << 83 // diffractive interaction occurs
79 // #ifdef debug_G4GammaParticipants << 84 if(IsSingleDiffractive())
80 // G4double eK = thePrimary.GetKineticEnerg << 85 {
81 // G4int nucleonCount = theNucleus->GetMass << 86 theSingleDiffExcitation.ExciteParticipants(aProjectile, aTarget);
82 // #endif << 87 } else {
83 << 88 theDiffExcitaton.ExciteParticipants(aProjectile, aTarget);
84 G4int theCurrent = G4int(theNucleus->GetMass << 89 }
85 G4int NucleonNo=0; << 90 G4InteractionContent * aInteraction = new G4InteractionContent(aProjectile);
86 << 91 aInteraction->SetTarget(aTarget);
87 theNucleus->StartLoop(); << 92 theInteractions.push_back(aInteraction);
88 G4Nucleon * pNucleon =0; << 93 aInteraction->SetNumberOfDiffractiveCollisions(1);
89 << 94 totalCuts += 1;
90 while( (pNucleon = theNucleus->GetNext << 95 } else {
91 << 96 // nondiffractive soft interaction occurs
92 if ( pNucleon ) { << 97 aTarget->IncrementCollisionCount(1);
93 << 98 aProjectile->IncrementCollisionCount(1);
94 G4QGSMSplitableHadron* aTarget = new G4QGS << 99 G4InteractionContent * aInteraction = new G4InteractionContent(aProjectile);
95 pNucleon->Hit(aTarget); << 100 aInteraction->SetTarget(aTarget);
96 << 101 aInteraction->SetNumberOfSoftCollisions(1);
97 if( (0.06 > G4UniformRand() &&(ModelMode== << 102 theInteractions.push_back(aInteraction);
98 { // Diffractive interaction << 103 totalCuts += 1;
99 G4InteractionContent * aInteraction << 104 }
100 theProjectileSplitable->SetStatus(1* << 105 return aProjectile;
101 <<
102 aInteraction->SetTarget(aTarget); <<
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 } 106 }
>> 107
134 108