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Idea Re: On Low Energy Neutron Scattering- Help needed 

Forum: Physics List
Re: Question On Low Energy Neutron Scattering- Help needed (Evan Askanazi)
Date: 12 May, 2011
From: Vladimir Ivanchenko <Vladimir Ivanchenko>


EMV option allowing significantly speed up simulation of electromagnetic cascades (some degradation of precision for e+,e-,gamma transport may be expected). This is not relevant to the neutron transport at all.

the HP physics option involved detailed transport simulation for neutrons below 20 MeV. CPU effitiency is affected seriously (for ordinary heavy media may be in 4-5 times). There is no sence to use HP and to speadup electromagnetic transport, which not anymore determines simulation time. So, we do not have these two options active together, we propose to use EMV and HP in absolutly different use-cases.

You may compare your results between "ordinary" Physics List QGSP_BIC and QGSP_BIC_HP. Also you can add TermalHP options accourding to the manual. The last will use data for materials if such data are available.


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