Creating FMESH Tally Over Region - Troubleshooting

[nrat320]

TL;DR Summary

My FMESH bounds are not right

I am trying to create a FMESH tally over a region that's (x: -15um to 15um, y:-15um to 15um, z:10um to 60um). My input code is below:

FC4 FMESH tally energy deposition
FMESH4:E GEOM=xyz ORIGIN= -0.0015 -0.0015 0.0010 &
IMESH=0.0015 IINTS=10 &
JMESH=0.0015 JINTS=1 &
KMESH=0.0060 KINTS=10 &
OUT=ik

However the meshtal file does not show more than 3 sigfigs (the meshtal output is shown below):

Tally bin boundaries:
X direction: -0.00 -0.00 -0.00 -0.00 -0.00 0.00 0.00 0.00 0.00 0.00 0.00
Y direction: -0.00 0.00
Z direction: 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01
Energy bin boundaries: 1.00E-05 1.00E+01

I couldn't anything about boundary resolution in the manual. Is FMESH incapable of calculating for small area or am I writing the boundaries incorrectly?

 

[member38644]

It seems like you are having trouble with the boundary resolution in your FMESH tally. The output only shows 3 significant figures, which could be an indication that the program is not capable of calculating for such a small area. I would recommend checking the manual or reaching out to the program's technical support team for more information on boundary resolution and if there are any limitations for small areas in FMESH. It is also possible that you are writing the boundaries incorrectly, so double-checking your input code and making sure it matches the program's requirements could also be helpful.