[joey_bob]

This talk from the MIT fusion lab lays out some approaches they have for solving problems in current fusion reactor design, in particular dealing with the radiation problem in a cost-effective manner. https://youtu.be/KkpqA8yG9T4

[pfdietz]

The ARC reactor is still unacceptably large and expensive. Its volumetric power density is still a factor of 40 worse than a PWR primary reactor vessel.