Regarding Weight Window Generation Iteration in MCNP

[LeoKong]

TL;DR

Hello everyone. I would like to ask about the specific steps involved in the Weight Window iteration method within MCNP's variance reduction techniques. As I am a beginner with limited understanding, I have been attempting this for several days without success.

The code content is as shown above. Running this file generates a `wwout` file; I then copy and paste the contents of this `wwout` file into a backup file. Next, I run the program again to generate a *new* `wwout` file, use the new weights to overwrite the original weights, and then run the program once more. Is this the correct procedure for performing the iteration?

 

[LeoKong]

Apologies—the densities shown in the figure should be 2.3 and 1.5.