MCNP: mesh with weight window generator

[Deb]

TL;DR Summary

Is there the possibility in MCNP, when using the mesh-based-weight window generator, to define the fine mesh in one direction (x for example), only for an interval of the other direction (between y1 and y2 for example)?

Hallo everybody,
I am using a mesh-based-weight window generator. It is clear to me that the coarse mesh must cover the full geometry; my doubt is about the fine mesh. Is it possible to define the fine mesh only in a part of a geometry, for example telling to MCNP to make 5 bins between y1 and y2 ONLY IF x is between x1 and x2 and a different y binning if x is elsewhere?
I found nothing similar in the documentation; all the examples of mesh I saw are for three axis, independently one from the other.
Thanks for the help.

 

[DEvens]

I wish I could help, but weight window is one of the features of MCNP I have not worked with.

Possibly you could get some help on the MCNP mailing list maintained by RSICC. You need to be a registered license holder to get on that mailing list. But once you are on, you can get the attention of a very large community of MCNP users. Including the developers of the program at times.

 

[raining Pete]

Hello there,

I am not very familiar with MCNP, but from what I understand, you are trying to define a fine mesh only in a specific region of your geometry. I think it is possible to do this by using the "region" or "cell" cards in MCNP. These cards allow you to specify certain properties, such as mesh spacing, for a specific region or cell in your geometry.

For example, you could define a region for the area where you want the finer mesh and specify the desired mesh spacing within that region. Then, for the rest of the geometry, you can define a different region with a different mesh spacing. This way, you can have different mesh spacings in different parts of your geometry.

I hope this helps. If you need more specific help, I suggest reaching out to the MCNP community or consulting the documentation for more detailed instructions.

Best of luck!