Hehe don't worry brysoon ... I'm much too addicted to this game not to have memorized locations.
I can see the explanation behind accidentally finding nanojammer research, but, especially considering the widespread use of nanobots in Vasari weaponry (nano-dissassembler, repair cloud, etc ..) it's vastly more logical to say: the Vasari weapons lab has found yet another way to use nanobots militarily.
There are civilian applications too - like nanomedicine. Point being nanotech manifests itself in almost every aspect of Vasari civilization. So they didn't stumble on a nano-jammer tech. It's just another nanotech, and it's completely military/defensive! It should go in the defense tree.