A mid-scale quasihelically symmetric experiment would significantly accelerate fusion development through the stellarator line

A mid-scale quasihelically symmetric stellarator would set the stage for a rapid progression to a D-T stellarator facility leading to a net-electric pilot plant with low recirculating power. Many fundamental advantages associated with quasisymmetry have already been demonstrated experimentally for quasihelical symmetry. New paradigms in stellarator research point to the possibility of combining, for the first time, reduced turbulent transport by design with a custom-fit divertor and plasma-material interface. A program is proposed within a manageable budget envelope which could produce potentially transformative results when undertaken within the context of the international program. This would put the US program into a strong leadership position.