@sundogplanets I keep thinking about this. I don't know if there are any nuclear physicists who will be there, especially neutronics or nuclear data folks, but it's always worth asking about Tungsten.

A lot of designs rely on Tungsten for in-core materials. No one has provided a sufficient answer to me for dealing with the activation of Tungsten. The two main stable isotopes after collecting a neutron have half-lives of 24 hours and 70ish days. The first is a beta decay releasing an over 1 MeV gamma, the second about a 0.5 MeV gamma.

I'm so curious how they're thinking about dealing with the constant production of hard gammas in their materials with a reasonably short half life that will lead to significant radiation hazards.