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G4ChipsElasticModel.cc
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25 //
26 // $Id$
27 //
28 //---------------------------------------------------------------------
29 //
30 // Geant4 Class : G4ChipsElasticModel
31 //
32 // Author : V.Ivanchenko 29 June 2009
33 //
34 // Modified:
35 // 13.01.10: M.Kosov: Use G4Q(Pr/Neut)ElasticCS instead of G4QElasticCS
36 //
37 //---------------------------------------------------------------------
38 // CHIPS model of hadron elastic scattering
39 //
40 
41 #include "G4ChipsElasticModel.hh"
42 #include "G4ParticleDefinition.hh"
43 #include <iostream>
44 
45 #include "G4CrossSectionDataSetRegistry.hh"
46 
47 G4ChipsElasticModel::G4ChipsElasticModel() : G4HadronElastic("hElasticCHIPS")
48 {
49  pxsManager = (G4ChipsProtonElasticXS*)G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4ChipsProtonElasticXS::Default_Name());
50  nxsManager = (G4ChipsNeutronElasticXS*)G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4ChipsNeutronElasticXS::Default_Name());
51  PBARxsManager = (G4ChipsAntiBaryonElasticXS*)G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4ChipsAntiBaryonElasticXS::Default_Name());
52  PIPxsManager = (G4ChipsPionPlusElasticXS*)G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4ChipsPionPlusElasticXS::Default_Name());
53  PIMxsManager = (G4ChipsPionMinusElasticXS*)G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4ChipsPionMinusElasticXS::Default_Name());
54  KPxsManager = (G4ChipsKaonPlusElasticXS*)G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4ChipsKaonPlusElasticXS::Default_Name());
55  KMxsManager = (G4ChipsKaonMinusElasticXS*)G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4ChipsKaonMinusElasticXS::Default_Name());
56  //Description();
57 }
58 
59 G4ChipsElasticModel::~G4ChipsElasticModel()
60 {}
61 
62 void G4ChipsElasticModel::Description() const
63 {
64  char* dirName = getenv("G4PhysListDocDir");
65  if (dirName) {
66  std::ofstream outFile;
67  G4String outFileName = GetModelName() + ".html";
68  G4String pathName = G4String(dirName) + "/" + outFileName;
69  outFile.open(pathName);
70  outFile << "<html>\n";
71  outFile << "<head>\n";
72 
73  outFile << "<title>Description of G4ChipsElasticModel</title>\n";
74  outFile << "</head>\n";
75  outFile << "<body>\n";
76 
77  outFile << "The G4ChipsElasticModel model performs hadron-nucleus elastic\n"
78  << "scattering using the parameterized elastic cross sections\n"
79  << "of M. Kossov\n";
80 
81  outFile << "</body>\n";
82  outFile << "</html>\n";
83  outFile.close();
84  }
85 }
86 
87 
88 G4double
89 G4ChipsElasticModel::SampleInvariantT(const G4ParticleDefinition* p,
90  G4double plab, G4int Z, G4int A)
91 {
92  G4int N = A - Z;
93  if(Z == 1 && N == 2) { N = 1; }
94  else if(Z == 2 && N == 1) { N = 2; }
95  G4int projPDG = p->GetPDGEncoding();
96  G4double cs = 0.;
97  if (projPDG==2212) { cs = pxsManager->GetChipsCrossSection(plab,Z,N,projPDG); }
98  else if(projPDG==2112) { cs = nxsManager->GetChipsCrossSection(plab,Z,N,projPDG); }
99  else if(projPDG==-2212){ cs = PBARxsManager->GetChipsCrossSection(plab,Z,N,projPDG); } //Pbar
100  else if(projPDG== 211) { cs = PIPxsManager->GetChipsCrossSection(plab,Z,N,projPDG); } // Pi+
101  else if(projPDG==-211) { cs = PIMxsManager->GetChipsCrossSection(plab,Z,N,projPDG); } // Pi-
102  else if(projPDG== 321) { cs = KPxsManager->GetChipsCrossSection(plab,Z,N,projPDG); } // K+
103  else if(projPDG==-321) { cs = KMxsManager->GetChipsCrossSection(plab,Z,N,projPDG); } // K-
104 
105  G4double t = 0.0;
106  if(cs > 0.0)
107  {
108  if (projPDG== 2212) { t = pxsManager->GetExchangeT(Z,N,projPDG); }
109  else if(projPDG== 2112) { t = nxsManager->GetExchangeT(Z,N,projPDG); }
110  else if(projPDG==-2212) { t = PBARxsManager->GetExchangeT(Z,N,projPDG); } // Pbar
111  else if(projPDG== 211) { t = PIPxsManager->GetExchangeT(Z,N,projPDG); } // Pi+
112  else if(projPDG== -211) { t = PIMxsManager->GetExchangeT(Z,N,projPDG); } // Pi-
113  else if(projPDG== 321) { t = KPxsManager->GetExchangeT(Z,N,projPDG); } // K+
114  else if(projPDG== -321) { t = KMxsManager->GetExchangeT(Z,N,projPDG); } // K-
115  }
116  else { t = G4HadronElastic::SampleInvariantT(p, plab, Z, A); }
117  return t;
118 }
119 
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