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Forum: Physics List
Re: Question ionIoni at low energies
Re: Idea Re: ionIoni at low energies (Vladimir Ivanchenko)
Date: 21 Jun, 2013
From: <matt_b>

Problem still there in patch02. As I suspected, it must be something in my code.

I have tried to replicate the problem in TestEm7, but no luck so far.

Questions:

1-Can I get a more verbose output from Geant apart from to tell me there is a segmentation fault?

2-I suspect it's something just at lower energies for generic ions? From my tracking output, I can see the last step before segmentation fault was:

  1   12.6 mus  1.56 cm  -2.27 cm  -8.79 mm      0 eV 0.0999 eV   scintillator     ionIoni

So does that mean it is probably a problem with my physics list for scintillation of generic ions at lower energies?

My scintillation physics code is from the LXe example:

  G4OpticalPhysics* opticalPhysics = new G4OpticalPhysics();
  RegisterPhysics( opticalPhysics );

  opticalPhysics->SetScintillationYieldFactor(1.0);
  opticalPhysics->SetScintillationExcitationRatio(0.0);

  opticalPhysics->SetMaxNumPhotonsPerStep(100);
  opticalPhysics->SetMaxBetaChangePerStep(10.0);

  opticalPhysics->SetTrackSecondariesFirst(kScintillation,true);

Is there anywhere else I should be looking in my code? Am I correct in only looking through the physics list?

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1 Idea: Re: ionIoni at low energies   (Michael H. Kelsey - 21 Jun, 2013)
(_ None: Re: ionIoni at low energies   (matt_b - 03 Jul, 2013)
(_ None: Re: ionIoni at low energies   (Mike Kelsey - 03 Jul, 2013)
(_ None: Re: ionIoni at low energies   (matt_b - 04 Jul, 2013)
(_ None: Re: ionIoni at low energies   (Mike Kelsey - 04 Jul, 2013)
(_ None: Re: ionIoni at low energies   (matt_b - 05 Jul, 2013)
1 Idea: Re: ionIoni at low energies   (Vladimir Ivanchenko - 05 Jul, 2013)
1 Sad: Re: ionIoni at low energies   (matt_b - 09 Jul, 2013)
2 None: Re: ionIoni at low energies   (Mike Kelsey - 05 Jul, 2013)
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