Dear FLUKA experts,
This is my first time configuring the source parameters using the user routine sourcenewgen.f. I would like to describe my setup and I hope to get some help.
Neutron source settings:
Defined as a circular source with a radius of 250 meters, oriented downward along the z-axis, centered at (x=0, y=0, z=360000).The energy spectrum is loaded from the file jungf.txt, which contains data extracted from the previous step’s USRBDX output file tab.lis.
I aimed to measure the neutron fluence and energy spectrum in a 40m x 50m rectangular area centered at (x=0, y=0, z=358650).
Unfortunately, the final USRBDX output values are all zeros.
Thank you in advance for your time and support.
Uploading: jungf.flair…
Uploading: jungf.inp…
Uploading: jungf.txt…
Uploading: sournewgen.f…
This is my running file
jungf.flair (26.7 KB)
jungf.inp (39.7 KB)
jungf.txt (26.1 KB)
sournewgen.f (20.8 KB)
Dear @wc.liu ,
The regions (AIR95 and AIR97) in your USRBDX don’t have a common surface; thus, the scoring result will always be zero.
Cheers,
Davidf