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GVFlashShowerParameterisation.cc
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28 // ------------------------------------------------------------
29 // GEANT 4 class implementation
30 //
31 // ------- GVFlashShowerParameterisation -------
32 //
33 // Authors: Joanna Weng - 11.2005
34 // ------------------------------------------------------------
35 
36 #include <cmath>
37 
39 
40 #include "G4PhysicalConstants.hh"
41 #include "G4SystemOfUnits.hh"
42 #include "Randomize.hh"
43 #include "G4ios.hh"
44 #include "G4Material.hh"
45 #include "Gamma.hh" // @@@@
46 #include "G4MaterialTable.hh"
47 
49  : thePar(0), density(0.), A(0.), Z(0.), X0(0.), Ec(0.), Rm(0.), NSpot(0.)
50 {
51  fGamma = new MyGamma;
52 }
53 
55 {
56  delete fGamma;
57 }
58 
60 {
61  // Returns Z or effective Z=sum(pi*Zi) (if compound/mixture)
62  // of given material
63  //
64  G4double z = 0.;
65  G4int nofElements = mat->GetNumberOfElements();
66  if (nofElements > 1)
67  {
68  for (G4int i=0; i<nofElements; i++) {
69  G4double zOfElement = mat->GetElement(i)->GetZ();
70  G4double massFraction = mat->GetFractionVector()[i];
71  // cout << mat->GetElement(i)->GetName()
72  // <<" Z= "<<zOfElement << " , Fraction= "<<massFraction <<endl;
73  z += zOfElement*massFraction;
74  }
75  }
76  else {
77  z = mat->GetZ();
78  }
79  return z;
80 }
81 
83 {
84  // Returns A or effective A=sum(pi*Ai) (if compound/mixture)
85  // of given material
86  //
87  G4double a = 0.;
88  G4int nofElements = mat->GetNumberOfElements();
89  if (nofElements > 1) {
90  for (G4int i=0; i<nofElements; i++) {
91  G4double aOfElement = mat->GetElement(i)->GetA()/(g/mole);
92  G4double massFraction = mat->GetFractionVector()[i];
93  a += aOfElement*massFraction;
94  }
95  }
96  else {
97  a = mat->GetA()/(g/mole);
98  }
99  return a;
100 }
101 
103 {
104  G4cout<<"/********************************************/ " << G4endl;
105  G4cout<<" - GVFlashShowerParameterisation::Material - " << G4endl;
106  G4cout<<" Material : " << mat->GetName() << G4endl;
107  G4cout<<" Z = " << Z << G4endl;
108  G4cout<<" A = " << A << G4endl;
109  G4cout<<" X0 = " << X0/cm << " cm" << G4endl;
110  G4cout<<" Rm = " << Rm/cm << " cm" << G4endl;
111  G4cout<<" Ec = " << Ec/MeV << " MeV"<< G4endl;
112  G4cout<<"/********************************************/ " << G4endl;
113 }
114 
116 {
117  G4double Phi = twopi*G4UniformRand() ;
118  return Phi;
119 }
120 
122 {
123  return fGamma->Gamma(a, x);
124 }