MIT's most recent tokamak, Alcator C-Mod, ran from 1993 to 2016. In 2016, the project pressure reached 2.05 atmospheres—a 15 percent jump over the previous record of 1.77 atmospheres with a plasma temperature of 35 million degrees C, sustaining fusion for 2 seconds, yielding 600 trillion fusion reactions. The run involved a 5.7 tesla magnetic field. It reached this milestone on its final day of operation.