Building Better Fusion Machines with Superconductors (image) American Physical Society Share Print E-Mail Caption Conceptual design of the ARC fusion reactor. About the same size as the currently operating JET tokamak in the United Kingdom, but with three times the magnetic field strength, ARC is sized to produce 500 MW of deuterium-tritium fueled fusion power. Credit Earl Marmar Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.