Zero lattice element hit in MCNP6 (but I cannot find the wrong area)

[yqh]

TL;DR

The mcnp6 code I wrote contains a "zero lattice element hit" error, but I am unable to identify the problem. My code has been uploaded, and I kindly ask someone with the ability to assist me. Thank you

The mcnp6 code I wrote contains a "zero lattice element hit" error, but I am unable to identify the problem. My code has been uploaded, and I kindly ask someone with the ability to assist me. Thank you

 

[Alex A]

Welcome to PhysicsForums @yqh,
If you run the program with ip, and show a cross section with "pz 23", you can see the square lattice isn't fully covered, by the 6x6 fill. Changing it to a 7x6 fill might fix it.

5      1 0.100104 -401 402 -403 404 lat=1 u=4
         fill=0:6 0:5 0:0
         5 41r

 

[yqh]

Welcome to PhysicsForums @yqh,
If you run the program with ip, and show a cross section with "pz 23", you can see the square lattice isn't fully covered, by the 6x6 fill. Changing it to a 7x6 fill might fix it.

5      1 0.100104 -401 402 -403 404 lat=1 u=4
         fill=0:6 0:5 0:0
         5 41r

Thank you very much for your help, this solved my problem, thank you again.