I’m testing my case with a low number of primaries while trying to study different aspects in a complex geometry as in attached files. After compiling the source routine and starting the run, the simulation stops with an error, but does not create any error files to check and investigate the issue.
I checked the log files and found something regarding materials that I could not understand.
I’m looking for your advice on this matter. Usually, Flair gives error messages that one can follow and solve, but in this case, it’s not even clear what the error is.
I have double checked all the COMPOUND materials again, found some mistakes in the fractions of material, fixed them and the same problem still persist.
Thank you very much for your response… in this case I have no other means except to change the composition of my material, correct?
another question:
I’m having this
ERROR: could not load neutron cross section for isotope Z=73 A=180 m=0
Abort called from KHPNLOAD reason Error loading neutron cross section for isotope Run stopped!
STOP Error loading neutron cross section for isotope
I have tired all the suggestion from the other threads
I didn’t do the calculation, but if the ratio of isotopes of an element follows the natural composition, then you don’t have to specify the isotopes separately.
If you leave the A field empty on the MATERIAL card, then FLUKA will correctly take the natural composition.
JEFF-3.3 doesn’t contain neutron cross sections for the ground state of Ta-180, only for the first metastable state Ta-180m.
It is not possible to directly specify the ground/metastable state on the MATERIAL card, so FLUKA tries to assign the ground state cross section, but fails in this case.
You can use the LOW-PWXS card to manually specify the cross section of the metastable isotope instead of the ground-state one by setting the IAZ value to 731801.
