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Forum: Hadronic Processes
Re: None Sorry: Problems tracking non-proton or neutron particles. Same as "Untitled" below (Hugh Lippincott)
Date: 05 Jan, 2007
From: Vladimir IVANTCHENKO <vnivanch@mail.cern.ch>

On Thu, 4 Jan 2007, Hugh Lippincott wrote:

> *** Discussion title: Hadronic Processes
> Email replies to PublicHyperNews@slac.stanford.edu must include:
>   In-Reply-To: <"/hadronprocess/625"@geant4-hn.slac.stanford.edu>
>   Subject: ...change this to be about your reply.
> 
> I'm having trouble shifting a simulation from geant4.7 to 4.8.2, and I
> think the problem might lie in changes in the hadronic processes files.
> I'm simulating neutrons scattering in various materials, and whenever
> the updated simulation has to follow a recoil particle (say a C12 atom
> in organic scintillator or something), the program goes on an infinite
> loop without killing the particle.
> 
> One can find part of a verbose output at:
> 
> pantheon.yale.edu/~whl5/output.txt
> 
> As one can see, the proton and neutron seem to track fine, but then the
> program goes on forever with the C12. Any advice would be greatly
> appreciated. Thanks,
> 
> Hugh
> 

Hello,

Can you, please, reproduce your problem using 

example/extended/hadronic/Hadr01

Take C12 as a beam, define scintillator target (for example,
"G4_POLYSTYRENE") of necessary size in a macro. Use physics list
"QGSP_BIC" or "QGSP_BERT"

/testhadr/Physics  QGSP_BERT

If problem will be reproduced, please, post macro-file.

regards,

VI

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