Home A DOE Office of Science User Facility hosted by General Atomics About the DIII-D National Fusion FacilityLearn about DIII-D as a User Facility of the U.S. Department of Energy, and our role in the worldwide effort to develop fusion energy. Read MoreBecome a UserBecome a DIII-D user and advance your fusion research. Read MoreFY2024-2025 Research Opportunity ForumReview all the needed information for submitting an experimental proposal for consideration for DIII-D runtime allocation in FY2024-2025 (includes details for users and non-users). Read More