Mega Ampere Spherical Tokamak (IMAGE) DOE/Princeton Plasma Physics Laboratory Caption This is the Mega Ampere Spherical Tokamak. Credit Culham Centre for Fusion Energy Usage Restrictions None License Licensed content 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.