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Idea Re: G4Exception: Aborting execution with QGSP_BERT physics list 

Forum: Physics List
Re: Question G4Exception: Aborting execution with QGSP_BERT physics list
Date: 17 Sep, 2012
From: Andrea Dotti <Andrea Dotti>

Hello, sorry for being late in answering to this post. But we have been investigating the issue. We want to propose a possible solution to the problem you have reported. We believe you have found a small-bug in physics lists code affecting very high energy interactions (primary kinetic energy >30 TeV) of gammas with nuclei (gamma-nuclear process).

I can propose here a solution for you and I would like to ask you to check if this fix the problem you observed. It is a small change in the source code of G4, that requires a re-build of your installation. I hope this can be achieved.

We would like to stress here that this is a technical fix that should prevent a crash, however the interactions of such high energy particles is not validated against experimental data. In this sense you will have a working job, but the physics correctness of the output cannot be guaranteed.

To implement the fix you will have to modify the file G4ElectroNuclearReaction.hh that can be found under: source/processes/hadronic/models/chiral_inv_phase_space/interface/include See: http://www-geant4.kek.jp/lxr/source/processes/hadronic/models/chiral_inv_phase_space/interface/include/G4ElectroNuclearReaction.hh

You should change the line 66:
 63  G4ElectroNuclearReaction():G4HadronicInteraction("CHIPSElectroNuclear")
 64   {
 65     SetMinEnergy(0*GeV);
 66     SetMaxEnergy(30*TeV);

To: 66 SetMaxEnergy(100*TeV);

We would appreciate if you can confirm if this solves the issue.

Thank you, Andrea

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1 None: Re: G4Exception: Aborting execution with QGSP_BERT physics list   (nareksahakyan - 21 Sep, 2012)
(_ Ok: Re: G4Exception: Aborting execution with QGSP_BERT physics list   (Andrea Dotti - 21 Sep, 2012)
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