Fusion Technologies

Najmabadi, F.

doi:10.1002/3527600434.eap149

Cited by 1 publication

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The advent of new REBCO technology enables all three of these paths. The US fusion program should develop magnet technologies that are specifically focused on lowering the cost and increasing the availability/reliability of the magnets required in fusion power systems [23,24]. The replacement of a failed toroidal field coil or a major poloidal field coil in a fusion reactor is considered to have such a negative impact on reactor availability (several years) that coil failure should not be a credible event.…”

Section: New Superconductor and Magnet Innovationsmentioning

confidence: 99%

Smaller & Sooner: Exploiting High Magnetic Fields from New Superconductors for a More Attractive Fusion Energy Development Path

et al. 2016

View full text Add to dashboard Cite

The current fusion energy development path, based on large volume moderate magnetic B field devices is proving to be slow and expensive. A modest development effort in exploiting new superconductor magnet technology development, and accompanying plasma physics research at high-B, could open up a viable and attractive path for fusion energy development. This path would feature smaller volume, fusion capable devices that could be built more quickly than low-to-moderate field designs based on conventional superconductors. Fusion's worldwide development could be accelerated by using several small, flexible devices rather than relying solely on a single, very large device. These would be used to obtain the acknowledged science and technology knowledge necessary for fusion energy beyond achievement of high gain. Such a scenario would also permit the testing of multiple confinement configurations while distributing technical and scientific risk among smaller devices. Higher field and small size also allows operation away from wellknown operational limits for plasma pressure, density and current. The advantages of this path have been long recognized-earlier US plans for burning plasma experiments (compact ignition tokamak, burning plasma experiment, fusion ignition research experiment) featured compact high-field designs, but these were necessarily pulsed due to the use of copper coils. Underpinning this new approach is the recent industrial maturity of high-temperature, highfield superconductor tapes that would offer a truly ''game changing'' opportunity for magnetic fusion when developed into large-scale coils. The superconductor tape form and higher operating temperatures also open up the possibility of demountable superconducting magnets in a fusion system, providing a modularity that vastly improves simplicity in the construction, maintenance, and upgrade of the coils and the internal nuclear engineering components required for fusion's development. Our conclusion is that while tradeoffs exist in design choices, for example coil, cost and stress limits versus size, the potential physics and technology advantages of high-field superconductors are attractive and they should be vigorously pursued for magnetic fusion's development.

show abstract

Section: New Superconductor and Magnet Innovationsmentioning

confidence: 99%