G4ChargedUnknownParticle.cc

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// --------------------------------------------------------------------------
//
//      GEANT4 source file 
//
//      File name:     G4ChargedUnknownParticle.cc
//
//      Author:        A.Ribon
// 
//      Creation date: August 2024
//
//      Description:   This class is similar to G4UnknownParticle,
//                     i.e. representing particles with valid PDG code but
//                     unknown to Geant4 - e.g. produced by MC event
//                     generators - but with the extra requirement of having
//                     a non-zero electric charge.
//                     While for G4UnknownParticle is possible to assign
//                     transportation and decay processes, for
//                     G4ChargedUnknownParticle is also possible to assign
//                     ionisation and multiple scattering.
//
//      Modifications:
//      
// --------------------------------------------------------------------------
//
 
#include "G4ChargedUnknownParticle.hh"
#include "G4ParticleTable.hh"
#include "G4String.hh"
#include "G4SystemOfUnits.hh"
 
 
G4ChargedUnknownParticle* G4ChargedUnknownParticle::theInstance = nullptr;
 
 
G4ChargedUnknownParticle* G4ChargedUnknownParticle::Definition() {
  if ( theInstance != nullptr ) return theInstance;
  const G4String name = "chargedunknown";
  G4ParticleTable* pTable = G4ParticleTable::GetParticleTable();
  G4ParticleDefinition* anInstance = pTable->FindParticle( name );
  if ( anInstance == nullptr ) {
    //    Arguments for constructor are as follows
    //               name             mass          width         charge
    //             2*spin           parity  C-conjugation
    //          2*Isospin       2*Isospin3       G-parity
    //               type    lepton number  baryon number   PDG encoding
    //             stable         lifetime    decay table
    //             shortlived      subType    anti_encoding
   anInstance = new G4ParticleDefinition(
             name,         0.0*MeV,       0.0*MeV,  +1.0*eplus, 
            0,               0,             0,          
            0,               0,             0,             
       "geantino",               0,             0,           0,
         true,            -1.0,          nullptr,
        false,      "geantino",            0
        );
  }
  theInstance = static_cast< G4ChargedUnknownParticle* >( anInstance );
  return theInstance;
}
 
 
G4ChargedUnknownParticle* G4ChargedUnknownParticle::ChargedUnknownParticleDefinition() {
  return Definition();
}
 
 
G4ChargedUnknownParticle* G4ChargedUnknownParticle::ChargedUnknownParticle() {
  return Definition();
}