About Us

The mission of DIII-D is to establish the scientific basis for the optimization of the tokamak approach to fusion energy production.

The DIII-D National Fusion Facility in San Diego, California is the largest experimental fusion research facility in the United States. Our research group includes more than 600 users from over 100 universities, labs, and institutions around the world. The DIII-D tokamak is the most versatile and well-diagnosed in the world. General Atomics operates DIII-D as a user facility for the Department of Energy through the Office of Fusion Energy Sciences.

Find more details about the DIII-D Program at https://fusion.gat.com/global/diii-d/home.


World-leading fusion science is only possible because of our incredibly dedicated and talented research team. People from a wide array of physics, engineering, and technology disciplines lead and manage various elements of the program, generate ideas and innovations, lead experiments, build and operate diagnostics and equipment, analyze data, provide theory and modeling, and report and publish results.

Postdoctoral researchers, graduate students, and undergraduate interns from collaborating institutions are an essential component of our team, with many opportunities to gain the training and hands-on skills needed to accomplish the U.S. mission to enable commercial fusion energy.