SCALE Software Coordinator
This topic has been migrated from the SCALE 6 notebook.
Date: Wed Oct 6 16:58:15 2010
Does anyone have an example of using a fixed source in CENTRM? I am using the CSAS1x process for obtaining a pointwise flux in an infinite medium of U-238. I'm trying to input a volumetric source in array 31**. I'm not sure if I can mix the free form and FIDO type input. Input is below with source profile truncated.
Any ideas?
=csas1x parm=centrm
Infinite medium of U-238 at 900 K
v7-238
read comp
u-238 1 0 1.0 900.0 end
END COMP
read celldata
infhommedium 1 end
centrmdata
nprt=1 ixprt=1 id1=3 isrc=0
mrange=0
30$$ 1
31**
1.32875E+01
...
and so on for 238 groups
...
t
end centrmdata
end celldata
end
SCALE Software Coordinator
Unfortunately you cannot enter a fixed source using CSAS or any other sequences currently in SCALE. The fixed source option can only be used when CENTRM is run as a stand-alone code. You can run an infinite medium of U238 using the standard CSAS sequences which use a fission spectrum for the source term, but you will get a very hard (fast) neutron spectrum.
M. Williams