- #1
Anisur Rahman
- 11
- 1
- TL;DR Summary
- MCNP Importance
MCNP -- What is meant by 2M and 20R?
- Thread starter Anisur Rahman
- Start date
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- Tags
- Nuclear physics Radiation
In summary, "MCNP -- What is meant by 2M and 20R?" discusses the notation used in the MCNP (Monte Carlo N-Particle Transport Code) simulation software. The term "2M" refers to a two-dimensional geometry with a mesh, while "20R" denotes a specific type of tally or scoring method used in the software for radiation transport calculations. These notations help users understand the configuration and methodology applied in their simulations for accurate radiation analysis.
- #2
Alex A
Gold Member
- 325
- 216
Welcome to PF!
M I didn't know, but I and R are common. I means interpolate, R means repeat and M turns out to mean multiply.
So in any long list of numbers,
5 20M 20M
Would be the same as,
5 100 2000
and
7 8R
Would be the same as,
7 7 7 7 7 7 7 7 7
and
1 8I 10
Would be the same as,
1 2 3 4 5 6 7 8 9 10
(I think, I make a lot of off by one errors using I, it's not in your question but it saves soooo much effort writing tally bins you should know it)
M I didn't know, but I and R are common. I means interpolate, R means repeat and M turns out to mean multiply.
So in any long list of numbers,
5 20M 20M
Would be the same as,
5 100 2000
and
7 8R
Would be the same as,
7 7 7 7 7 7 7 7 7
and
1 8I 10
Would be the same as,
1 2 3 4 5 6 7 8 9 10
(I think, I make a lot of off by one errors using I, it's not in your question but it saves soooo much effort writing tally bins you should know it)
- #3
Anisur Rahman
- 11
- 1
Thank you so much!