Proton nuclear simulation issue (MCNP6)

AI Thread Summary
In the MCNP6 simulation of a proton beam interacting with targets, 96% of the protons are lost due to energy cutoff, raising concerns about the accuracy of the results. The user is uncertain about the implications of this loss, questioning whether it affects the interaction outcomes. Additional information is requested regarding the energy of the protons and the target material to better understand the situation. The discussion highlights the importance of these parameters in determining the behavior of protons in simulations. Understanding the energy levels and target composition is crucial for accurate simulation results.
evjanuclear
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Hi,
I'm simulating in MCNP6 the reaction of proton beam on targets but in the simulation the 96% of the proton are lost for energy cutoff.
I don't understand why happen that. I use a tally4 to obtain the reaction in the target, but I suppose the results are wrong because the lost of protons (if they are lost they can´t interact isn´t it?)

Any idea?

Thanks,
Eva
 
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Eva,
Can you tell us the energy of the protons and the material of the target ?
 

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