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Keywords: Mulassis GCR macro unsupported particle G4Exception core dump
Forum: Hadronic Processes
Re: Question Using Geant4/MULASSIS with high energetic cosmic ray spectra, error message (Andreas)
Date: 10 Aug, 2007
From: Dennis H. Wright <Dennis H. Wright>

Hi Andreas,

   The message from G4NuclearLevelManager does not indicate a problem;
rather it informs you that data from certain nuclear fragments do not
exist.  This is most often the case for nuclei far from stability which 
have never been measured.  In this case, Geant4 will still generate 
gammas, but not with discrete energies.

  The message from G4Fragment is a warning which indicates that there 
is some energy non-conservation going on.   This is a relatively rare
shortcoming of the model involved, and not of the physics list you have 
used, or your setup.

  As to the "unsupported particle" message:  what particles does the 
MULASSIS layer instantiate?   The cross section code being accessed
only supports pi+, pi-, pi0, p, n, K+, K-, K0L, K0S, d, t, alpha, 
lambda, sigma+, sigma-, sigma0, xi0, xi-, omega- and the anti-nucleons
and anti-hyperons.  Perhaps MULASSIS is trying to get a cross section
for some other ion like 3He or maybe an eta.

Dennis

 

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