MCNP6.2 - How to plot normalized tallies with MCNP6.2?

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SUMMARY

The discussion focuses on plotting normalized tallies using MCNP6.2, specifically tallies F2, F4, and F6. Users are exploring tools such as Python and MATLAB for visualization, while also considering the internal MCPLOT tool. The normalization process involves multiplying F4 tallies by nu power and dividing by energy per fission and k_eff. Participants suggest using the FM multiplier subcard for direct data processing within MCNP6.2.

PREREQUISITES
  • Understanding of MCNP6.2 and its tally types (F2, F4, F6)
  • Familiarity with normalization processes in nuclear simulations
  • Basic knowledge of Python or MATLAB for data visualization
  • Experience with the FM multiplier subcard in MCNP6.2
NEXT STEPS
  • Research how to use MCPLOT for plotting normalized tallies in MCNP6.2
  • Learn about the FM multiplier subcard and its applications in MCNP6.2
  • Explore Python libraries like Matplotlib for plotting simulation data
  • Investigate how to dynamically feed k_eff values into MCNP6.2 tallies
USEFUL FOR

Nuclear engineers, researchers in radiation transport simulations, and anyone involved in data analysis and visualization using MCNP6.2.

19matthew89
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TL;DR
Newbie with MCNP here: how to plot (normalized tallies)?
Hi everyone,
I'm really new to MCNP here and I'm "playing" around trying to understand what is going on.

I'd like to plot my tallies (F2, F4 and F6). Is there any tool (e.g. python or matlab package) you recommend?

I know that the internal plot MCPLOT is available but I'm wondering how you normalize the tallies there. In a postprocess data treatment you'd multiply, for instance the F4 tallies, times nu power and divide by energy per fission and k_eff. But I was wondering, can you have that done by MCPLOT so to properly plot the "real" tally?

Thanks a lot in advance
 
Last edited:
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Perhaps you can try to use the FM multiplier subcard in the input program to process the data directly, then plot.
 
Hi,
Yeah. I had thought of that. But as you need to divide by the k_eff which is found in the code itself, can you feed in the FM card a parameter like the k_eff which is continuously updated? Or can you only multiply by a constant?
 
Do somebody uses "time based" tallies and know how to plot them
Regards
Thibaut
 

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