Geant4  9.6.p02
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G4AdjointPositron.cc
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27 // $Id$
28 //
29 //
30 // ------------------------------------------------------------
31 // GEANT 4 class header file
32 //
33 // History:
34 // 1st March 2007 creation by L. Desorgher based on a modification of G4Positron
35 // 06 Nov. 2008 modified for Geant4-09-02 by Hisaya Kurashige
36 //
37 //-------------------------------------------------------------
38 //
39 
40 #include "G4AdjointPositron.hh"
41 #include "G4ParticleTable.hh"
42 #include "G4PhysicalConstants.hh"
43 #include "G4SystemOfUnits.hh"
44 
45 // ######################################################################
46 // ### ADJOINT ELECTRON ###
47 // ######################################################################
48 G4AdjointPositron* G4AdjointPositron::theInstance = 0;
49 
51 {
52 
53  if (theInstance !=0) return theInstance;
54  const G4String name = "adj_e+";
55  // search in particle table]
57  G4ParticleDefinition* anInstance = pTable->FindParticle(name);
58  if (anInstance ==0)
59  {
60 
61  // create particle
62  //
63  // Arguments for constructor are as follows
64  // name mass width charge
65  // 2*spin parity C-conjugation
66  // 2*Isospin 2*Isospin3 G-parity
67  // type lepton number baryon number PDG encoding
68  // stable lifetime decay table
69  // shortlived subType anti_encoding
70 
71  // use constants in CLHEP
72  // static const double electron_mass_c2 = 0.51099906 * MeV;
73 
74  // NOTE : electric charge and magnetic moment is opposite
75  // compared with real positron, because adjoint particles
76  // are used to back-trace
77  anInstance = new G4ParticleDefinition(
78  name, electron_mass_c2, 0.0*MeV, -1.*eplus,
79  1, 0, 0,
80  0, 0, 0,
81  "adjoint", -1, 0, -10000011,
82  true, -1.0, NULL,
83  false, "adj_lepton"
84  );
85  // Bohr Magnetron
87  anInstance->SetPDGMagneticMoment( muB * 2.* 1.0011596521859 );
88 
89  }
90  theInstance = reinterpret_cast<G4AdjointPositron*>(anInstance);
91  return theInstance;
92 }
93 
95 {
96  return Definition();
97 }
98 
100 {
101  return Definition();
102 }
103 
104