ITER is much more complicated than SPARC. For example, the disruption mitigation system is similar to DIII-D's but with (I believe) much higher resolution in t

ITER is much more complicated than SPARC. For example, the disruption mitigation system is similar to DIII-D's but with (I believe) much higher resolution in time and space. ITER has 80 MW of plasma heating but most Q targets only require ~50 MW. It is a platform to do science. It's a huge machine that is meant to demonstrate a tokamak reactor. Corners can't be cut to get there. Making a tiny machine quickly, skimming over the hard engineering problems is more of a moonshot approach. It's halfway to a startup with actual MIT startups selling HTS coils. Be wary of anyone selling something.