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25 //
26 //
27 // The lust update: M.V. Kossov, CERN/ITEP(Moscow) 17-June-02
28 //
29 //
30 // G4 Physics class: G4ChipsKaonZeroElasticXS for gamma+A cross sections
31 // Created: M.V. Kossov, CERN/ITEP(Moscow), 20-Dec-03
32 // The last update: M.V. Kossov, CERN/ITEP (Moscow) 15-Feb-04
33 //
34 // ****************************************************************************************
35 // Short description: Cross-sections extracted (by W.Pokorski) from the CHIPS package for
36 // K(zero)-nuclear interactions. Original author: M. Kossov
37 // -------------------------------------------------------------------------------------
38 //
39
40 #include "G4ChipsKaonZeroElasticXS.hh"
41 #include "G4DynamicParticle.hh"
42 #include "G4ParticleDefinition.hh"
43 #include "G4KaonZero.hh"
44 #include "G4KaonZeroLong.hh"
45 #include "G4KaonZeroShort.hh"
46 #include "G4AntiKaonZero.hh"
47 #include "G4CrossSectionDataSetRegistry.hh"
48
49 // factory
50 #include "G4CrossSectionFactory.hh"
51 //
52 G4_DECLARE_XS_FACTORY(G4ChipsKaonZeroElasticXS);
53
54
55
56 G4ChipsKaonZeroElasticXS::G4ChipsKaonZeroElasticXS():G4VCrossSectionDataSet(Default_Name())
57 {
58
59 lastLEN=0;// Pointer to the lastArray of LowEn CS
60 lastHEN=0;// Pointer to the lastArray of HighEnCS
61 lastN=0; // The last N of calculated nucleus
62 lastZ=0; // The last Z of calculated nucleus
63 lastP=0.; // Last used in cross section Momentum
64 lastTH=0.;// Last threshold momentum
65 lastCS=0.;// Last value of the Cross Section
66 lastI=0; // The last position in the DAMDB
67
68 theKMinusCS = (G4ChipsKaonMinusElasticXS*)G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4ChipsKaonMinusElasticXS::Default_Name());;
69 theKPlusCS = (G4ChipsKaonPlusElasticXS*)G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4ChipsKaonPlusElasticXS::Default_Name());
70 }
71
72
73 G4ChipsKaonZeroElasticXS::~G4ChipsKaonZeroElasticXS()
74 {
75 }
76
77 void
78 G4ChipsKaonZeroElasticXS::CrossSectionDescription(std::ostream& outFile) const
79 {
80 outFile << "G4ChipsKaonZeroElasticXS provides the elastic cross\n"
81 << "section for K0 nucleus scattering as a function of incident\n"
82 << "momentum. The cross section is calculated using M. Kossov's\n"
83 << "CHIPS parameterization of cross section data.\n";
84 }
85
86 G4bool G4ChipsKaonZeroElasticXS::IsIsoApplicable(const G4DynamicParticle*, G4int, G4int,
87 const G4Element*,
88 const G4Material*)
89 {
90 return true;
91 }
92
93
94
95 // The main member function giving the collision cross section (P is in IU, CS is in mb)
96 // Make pMom in independent units ! (Now it is MeV)
97
98 G4double G4ChipsKaonZeroElasticXS::GetIsoCrossSection(const G4DynamicParticle* Pt, G4int tgZ, G4int A,
99 const G4Isotope*,
100 const G4Element*,
101 const G4Material*)
102 {
103 G4double pMom=Pt->GetTotalMomentum();
104 G4int N = A - tgZ;
105
106 return GetChipsCrossSection(pMom, tgZ, N, 311);
107 }
108
109 G4double G4ChipsKaonZeroElasticXS::GetChipsCrossSection(G4double mom, G4int Z, G4int N, G4int pdg)
110 {
111 return (theKMinusCS->GetChipsCrossSection(mom,Z,N,pdg)
112 +theKPlusCS->GetChipsCrossSection(mom,Z,N,pdg))/2;
113 }
114
115
116