Initializing neutrons

Particles, Track, Event, Run and Biasing
1

Hi,

In my code, I’m trying to define particles as neutron in the PrimaryParticleGenerator.cc script through

G4ParticleDefinition* particle = G4Neutron::Definition();

In my PhysicsList.cc I have included a reference physics list through

RegisterPhysics( new G4HadronPhysicsQGSP_BERT_HP(verbose));

I don’t have anything further setup; i.e. no ConstructParticle(), etc. My code compiles fine. However, during the run I see the warning before it crashes (as the particle is being used)

-------- WWWW ------- G4Exception-START -------- WWWW -------
*** G4Exception : PART101
      issued by : G4ParticleDefintion::G4ParticleDefintion
G4ParticleDefinition should be created in PreInit state
*** This is just a warning message. ***
-------- WWWW -------- G4Exception-END --------- WWWW -------

Hi, how come this error is being produced. I though that including the QGSP_BERT_HP library should suffice. Should I just initialize everything through the ConstructParticle() class as

void MyPhysicsList::ConstructParticle(){
  // Construct all baryons
  G4BaryonConstructor bConstructor;
  bConstructor.ConstructParticle();

  // Construct all leptons
  G4LeptonConstructor lConstructor;
  lConstructor.ConstructParticle();

  // Construct all mesons
  G4MesonConstructor mConstructor;
  mConstructor.ConstructParticle();

  // Construct all Boson
  G4BosonConstructor bsConstructor;
  bsConstructor.ConstructParticle();

  // Construct all Shortlived
  G4ShortLivedConstructor slConstructor;
  slConstructor.ConstructParticle();

  // Construct Ion
  G4IonConstructor iConstructor;
  iConstructor.ConstructParticle();
}

I’ve seen the warning disappear but I’m not sure if I’d be overlooking something.

Cheers,
Johan