Proton nuclear simulation issue (MCNP6)

[evjanuclear]

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

 

[PSRB191921]

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

 

[raining Pete]

Hi Eva,

I'm not familiar with MCNP6, but from what you've described, it sounds like there may be an issue with your simulation setup. Have you checked your input parameters to make sure they are accurate and representative of the actual conditions? It's possible that the energy cutoff is set too low, causing the protons to be lost.

Another thing to consider is the target material and its properties. Is it possible that the protons are being absorbed or scattered by the target material? This could also contribute to the high loss rate.

I would suggest double checking all of your input parameters and possibly reaching out to the MCNP6 community for advice and troubleshooting. Good luck with your simulation!