Search found 5 matches

by eugene171
Thu Aug 22, 2013 12:32 am
Forum: Methods
Topic: Simulating a neutron beam?
Replies: 5
Views: 6048

Re: Simulating a neutron beam?

I seem to be doing things wrong despite trying to follow the manual. I keep getting the error: Fatal error in function ExternalSource: Coordinate sampling routine missing Simulation aborted. Here is my input file thus far; can you give some input on what I'm doing incorrectly? %Eugene O'Donnell % --...
by eugene171
Tue Aug 13, 2013 12:05 am
Forum: Methods
Topic: Simulating a neutron beam?
Replies: 5
Views: 6048

Re: Simulating a neutron beam?

The surface in question is a rectangular cell, bounded by six planes (2 px, 2 py, 2 pz). Before trying to do anything too complicated with the source, I decided to try using src 1 sd 0 0 1 se 2 for isotropic neutrons at 2 MeV coming from the Z direction. I am getting the following error: Starting th...
by eugene171
Fri Aug 09, 2013 9:26 pm
Forum: Methods
Topic: Simulating a neutron beam?
Replies: 5
Views: 6048

Simulating a neutron beam?

How might one simulate a neutron beam? I have MCNP code for the beam in question: mode n nps 10000000 $ Number of histories to be run imp:n 1 1 0 $ importance of materials sdef erg=2 $ monoenergetic neutrons at 16.5 MeV sur = 6 dir = 1 $ cosine of angle pos -.75 0 0 rad = d1 vec = 1 0 0 si1 .499 sp1...
by eugene171
Wed Jul 24, 2013 3:51 am
Forum: Compiling and installing Serpent
Topic: xsdirconvert.pl issues
Replies: 17
Views: 31637

Re: xsdirconvert.pl issues

That fixed it, thanks!
by eugene171
Mon Jul 22, 2013 8:47 pm
Forum: Compiling and installing Serpent
Topic: xsdirconvert.pl issues
Replies: 17
Views: 31637

xsdirconvert.pl issues

I am attempting to change the xsdir files (sss_endfb7u.xsdir, and the other xsdir files in xsdata) into xsdata files using xsdirconvert.pl. I have obtained the newest copy of xsdirconvert.pl from http://montecarlo.vtt.fi/links.htm I am running this off of a dual-boot windows 7 / ubuntu device; this ...