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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Fusion Science and Technology
October 2025
Latest News
DOE awards $134M for fusion research and development
The Department of Energy announced on Wednesday that it has awarded $134 million in funding for two programs designed to secure U.S. leadership in emerging fusion technologies and innovation. The funding was awarded through the DOE’s Fusion Energy Sciences (FES) program in the Office of Science and will support the next round of Fusion Innovation Research Engine (FIRE) collaboratives and the Innovation Network for Fusion Energy (INFUSE) awards.
Wenjun Yang, Guoqiang Li, Xiang Gao, Xueyu Gong
Fusion Science and Technology | Volume 79 | Number 5 | July 2023 | Pages 528-536
Technical Paper | doi.org/10.1080/15361055.2022.2151279
Articles are hosted by Taylor and Francis Online.
The stability of Alfvén eigenmodes (AEs) driven by fast ions is investigated in the Experimental Advanced Superconducting Tokamak (EAST). It is demonstrated that all AEs found in toroidal AE gaps are stable and that the least stable mode is a reversed shear Alfvén eigenmode (RSAE) with . The calculation results show that collisional damping is the main damping mechanism for toroidal mode number . The excitation threshold for the RSAE is about βcrit,b = 3.33%, bigger than the value of the central beam ion beta βb = 1.01%. The results show that AEs driven by fast ions are stable in EAST, at least for the parameters shown in this work. The effect of beam ion pressure and energy on AE stability is also presented. The drive coming from fast ions increases with the pressure gradient, and the drive mainly comes from 3 resonance.