English

Retrospective of the ARPA-E ALPHA fusion program

Plasma Physics 2020-04-01 v2

Abstract

This paper provides a retrospective of the ALPHA (Accelerating Low-cost Plasma Heating and Assembly) fusion program of the Advanced Research Projects Agency-Energy (ARPA-E) of the U.S. Department of Energy. ALPHA's objective was to catalyze research and development efforts to enable substantially lower-cost pathways to economical fusion power. To do this in a targeted, focused program, ALPHA focused on advancing the science and technology of pulsed, intermediate-density fusion approaches, including magneto-inertial fusion and Z-pinch variants, that have the potential to scale to commercially viable fusion power plants. The paper includes a discussion of the origins and framing of the ALPHA program, a summary of project status and outcomes, a description of associated technology-transition activities, and thoughts on a potential follow-on ARPA-E fusion program.

Cite

@article{arxiv.1907.09921,
  title  = {Retrospective of the ARPA-E ALPHA fusion program},
  author = {C. L. Nehl and R. J. Umstattd and W. R. Regan and S. C. Hsu and P. B. McGrath},
  journal= {arXiv preprint arXiv:1907.09921},
  year   = {2020}
}

Comments

24 pages, 13 figures; accepted for publication by Journal of Fusion Energy

R2 v1 2026-06-23T10:28:24.482Z