Programs/codes for criticality calculations

[vifteovn]

What programs model nuclear reactors and can determine if the reactor goes critical or not? It would be a big advantage if the given programs are open source as well, since the ones that cost money evidently cost a lot.

I might be able to get hold of SCALE 6.1, but that program/code would be locked to my insitution, and it would be nice to have a program that I could take home and work with.

 

[rmattila]

Serpent is available through NEA:

http://montecarlo.vtt.fi/