Hi,
I am new to FLUKA and FORTRAN so my issue might be trivial but still.
1. I'm trying simplified beam dump geometry. I am using usimbs.f routine to
bias neutrons in radial direction. the routine was taken from example i got
and i modified to my problem. It seems to work and no errors that i noticed
are issued, but the neutrons do not penetrate deeper than R=340 cm. I tried
500 and 5000 particle runs and it seems that neutrons do not go further. I
haven't found any mistakes in geometry or material so thought maybe my
modification of routine was wrong.
This is link to nps=5000 run and usimbs.f routine. includes eps file with
comparison of neutron dose rate with 500 nps and 5000 nps.
https://copy.com/TcaxOUnC7EpVQG9l
2. In total energy balance in run summary it is written that 11.9 % of
energy missing, I was wondering what is the reason of this mismatch.
Any help is appreciated.
Sincerely,
Benjaminas Marcinkevičius
Received on Tue Feb 04 2014 - 21:44:14 CET