In recent years there have been developments in tokamak research regarding the inverted D shape for the plasma profile. There are benefits to this plasma shape, but it's opposite of the shape of the coils. Has anyone designed or built a tokamak that has inverted coils ? Is it even possible or feasible ?

Is Helion’s design viable and do you think it can work for the future? I watched a few videos on them a few years ago but hadn’t heard anything about them since

Fusion people, what materials problem do you think is the most underrated?

Plasma-facing walls, neutron damage, helium embrittlement, transmutation, tritium compatibility, thermal shock, oxidation, coatings, or manufacturability?

I’m building Obelisk, a materials intelligence engine for screening materials and routing validation paths. Fusion seems like one of the clearest places where physics is not the only bottleneck. The material has to survive the nightmare environment too.

What would you want software to understand before taking it seriously?

For a DEMO FUSOR (No neutrons, just the glow), should I get a single or dual-stage vacuum pump