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None run time about high precision neutron simulation 

Forum: Biasing and Scoring
Date: 07 Dec, 2015
From: Zhiyi Liu <Zhiyi Liu>

Hi,

We are focusing on transportation simulation of fast neutrons in some materials. Information of interests are: global time, momentum and hit positions of inelastic gamma rays, capture neutrons and thermal neutrons. As been warned, we have observed that introducing high precision (HP) physics processes of neutrons significantly increases simulation run time, for example, at least 10 times slower in our case.

Without thermal neutron processes on which significant time is spent, run time is acceptable. With thermal neutrons processes, it is too slow. Any good ideas to significantly reduce run time? For example, speeding up G4Step of thermal neutrons?

Thanks, Zhiyi

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