Journal of Fusion Energy

, Volume 29, Issue 5, pp 447–453

Why Compact Tori for Fusion?

  • S. Woodruff
  • M. Brown
  • E. B. Hooper
  • R. Milroy
  • M. Schaffer
Original Research

DOI: 10.1007/s10894-010-9303-1

Cite this article as:
Woodruff, S., Brown, M., Hooper, E.B. et al. J Fusion Energ (2010) 29: 447. doi:10.1007/s10894-010-9303-1


A compact torus (CT) has a toroidal magnetic and plasma geometry, but is contained within a simply-connected vacuum vessel such as a cylinder. Spheromaks and field-reversed configurations fall into this category. Compact tori are translatable and have a high engineering beta. The primary benefit of CTs for fusion is the absence of toroidal field and Ohmic Heating coils and the many problems brought on by them. Studying fusion-relevant plasma in simply-connected geometries affords the world fusion program both physics and technology opportunities not found in other configurations. This paper outlines the technology and physics opportunities of compact tori, and presents a cost model based on geometry for comparison with less compact configurations.


Compact tori Spheromak Field reversed configuration 

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • S. Woodruff
    • 1
  • M. Brown
    • 2
  • E. B. Hooper
    • 3
  • R. Milroy
    • 4
  • M. Schaffer
    • 5
  1. 1.Woodruff Scientific IncSeattleUSA
  2. 2.Swarthmore CollegeSwarthmoreUSA
  3. 3.Lawrence Livermore National LaboratoryLivermoreUSA
  4. 4.Redmond Plasma Physics LabUniversity of WashingtonRedmondUSA
  5. 5.General AtomicsSan DiegoUSA

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