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G4CHIPSElasticXS.cc
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26 // $Id$
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28 // -------------------------------------------------------------------
29 //
30 // GEANT4 Class file
31 //
32 //
33 // File name: G4CHIPSElasticXS
34 //
35 // Author Ivantchenko, Geant4, 3-Aug-09
36 //
37 // Modifications:
38 // 31-05-2011 V.Uzhinsky added anti-baryons, Pi+, Pi-, K+, K- cross sections
39 // 23-08-2011 V.Ivanchenko migration to new design and cleanup
40 //
41 
42 #include "G4CHIPSElasticXS.hh"
43 #include "G4HadronicException.hh"
44 #include "G4DynamicParticle.hh"
45 #include "G4ParticleDefinition.hh"
46 #include "G4Element.hh"
47 #include "G4Proton.hh"
48 #include "G4Neutron.hh"
49 #include "G4VQCrossSection.hh"
50 #include "G4QProtonElasticCrossSection.hh"
51 #include "G4QNeutronElasticCrossSection.hh"
52 
53 #include "G4QAntiBaryonElasticCrossSection.hh" // Uzhi
54 #include "G4QPionMinusElasticCrossSection.hh" // Uzhi
55 #include "G4QPionPlusElasticCrossSection.hh" // Uzhi
56 #include "G4QKaonMinusElasticCrossSection.hh" // Uzhi
57 #include "G4QKaonPlusElasticCrossSection.hh" // Uzhi
58 
59 G4CHIPSElasticXS::G4CHIPSElasticXS()
60  : G4VCrossSectionDataSet("CHIPSElasticXS"),
61  theProton(G4Proton::Proton()),
62  theNeutron(G4Neutron::Neutron()),
63  thEnergy(19*CLHEP::MeV),
64  isInitialized(false)
65 {
66  // verboseLevel = 0;
67  pCManager = G4QProtonElasticCrossSection::GetPointer();
68  nCManager = G4QNeutronElasticCrossSection::GetPointer();
69 
70  PBARxsManager = G4QAntiBaryonElasticCrossSection::GetPointer(); // Uzhi
71  PIPxsManager = G4QPionPlusElasticCrossSection::GetPointer(); // Uzhi
72  PIMxsManager = G4QPionMinusElasticCrossSection::GetPointer(); // Uzhi
73  KPxsManager = G4QKaonPlusElasticCrossSection::GetPointer(); // Uzhi
74  KMxsManager = G4QKaonMinusElasticCrossSection::GetPointer(); // Uzhi
75  //Description();
76  theParticle = 0;
77 }
78 
79 G4CHIPSElasticXS::~G4CHIPSElasticXS()
80 {}
81 
82 
83 void G4CHIPSElasticXS::Description() const
84 {
85  char* dirName = getenv("G4PhysListDocDir");
86  if (dirName) {
87  std::ofstream outFile;
88  G4String outFileName = GetName() + ".html";
89  G4String pathName = G4String(dirName) + "/" + outFileName;
90 
91  outFile.open(pathName);
92  outFile << "<html>\n";
93  outFile << "<head>\n";
94 
95  outFile << "<title>Description of CHIPS Elastic Cross Section</title>\n";
96  outFile << "</head>\n";
97  outFile << "<body>\n";
98 
99  outFile << "G4CHIPSElasticXS provides hadron-nuclear elastic scattering\n"
100  << "cross sections for protons and neutrons with incident energies\n"
101  << "between 19 MeV and X GeV. These cross sections represent\n"
102  << "parameterizations developed by M. Kossov. (more detail)\n";
103 
104  outFile << "</body>\n";
105  outFile << "</html>\n";
106  outFile.close();
107  }
108 }
109 
110 G4bool
111 G4CHIPSElasticXS::IsIsoApplicable(const G4DynamicParticle* dyn,
112  G4int Z, G4int /*A*/,
113  const G4Element*, const G4Material*)
114 {
115  return (Z <= 2 && dyn->GetKineticEnergy() > thEnergy);
116 }
117 
118 G4double
119 G4CHIPSElasticXS::GetIsoCrossSection(const G4DynamicParticle* dyn,
120  G4int Z, G4int A,
121  const G4Isotope*, const G4Element*,
122  const G4Material*)
123 {
124  G4int N = A - Z;
125  if(Z == 1) {
126  if(N > 1) { N = 1; }
127  } else if(Z == 2) { N = 2; }
128 
129  G4double momentum = dyn->GetTotalMomentum();
130  G4int uPDGcode = dyn->GetPDGcode();
131  G4VQCrossSection* CHIPSmanager = 0;
132  G4double cross = 0.0;
133 
134  switch(uPDGcode) {
135  case 2212:
136  CHIPSmanager=pCManager;
137  break;
138  case 2112:
139  CHIPSmanager=nCManager;
140  break;
141  case -2212:
142  CHIPSmanager=PBARxsManager;
143  break;
144  case -2112:
145  CHIPSmanager=PBARxsManager;
146  break;
147  case 211:
148  CHIPSmanager=PIPxsManager;
149  break;
150  case -211:
151  CHIPSmanager=PIMxsManager;
152  break;
153  case 321:
154  CHIPSmanager=KPxsManager;
155  break;
156  case -321:
157  CHIPSmanager=KMxsManager;
158  break;
159  case 130:
160  break;
161  case 310:
162  break;
163  case 311:
164  break;
165  case -311:
166  break;
167  default:
168  throw G4HadronicException(__FILE__, __LINE__,
169  "G4CHIPSElasticXS: not applicable for a particle");
170  return cross;
171  }
172  if(CHIPSmanager) {
173  cross = CHIPSmanager->GetCrossSection(false,momentum,Z,N,uPDGcode);
174  } else {
175  cross = 0.5*(KPxsManager->GetCrossSection(false,momentum,Z,N,uPDGcode) +
176  KMxsManager->GetCrossSection(false,momentum,Z,N,uPDGcode));
177  }
178  return cross;
179 }
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