Status of the KSTAR superconducting magnet system development

Kim, K.; Park, H.K.; Park, K.R.; Lim, Byung Su; Lee, S.I.; Chu, Y.; Chung, Woosuk; Oh, Y.K.; Baek, S.; Yonekawa, H.; Kim, J.S.; Kim, C.S.; Choi, Ji Suk; Chang, Y.B.; Park, S.H.; Kim, D.J.; Song, N.H.; Song, Young Joo; Woo, I.S.; Han, W.S.; Lee, D.K.; Lee, K.S.; Park, W.W.; Joo, J.J.; An, Seong Jin; Park, J.S.; Lee, G.S.

doi:10.1088/0029-5515/45/8/003

Cited by 41 publications

(16 citation statements)

References 15 publications

(13 reference statements)

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“…This technology has been used successfully in model coils and in smaller fusion experiments. In fact, all superconducting fusion systems in operation or under construction (EAST, KSTAR, SST-1, LHD PF coils, Wendelstein 7-X, ITER) [14][15][16][17][18] use the Cable-in-Conduit-Conductor technology invented and developed in the US in the 1970s [19]. Magnet design for fusion applications requires multidisciplinary engineering skills including applied superconductivity, mechanical engineering, electrical engineering, materials science, and engineering design.…”

Section: Background On Fusion Magnetsmentioning

confidence: 99%

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

et al. 2016

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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.

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Section: Background On Fusion Magnetsmentioning

confidence: 99%

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

et al. 2016

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“…The conductor was fabricated by wrapping the 2.86 mm thickness Incoloy908 strip around 324 Nb 3 Sn strands and 162 copper strands. The heat treatment of Each Nb 3 Sn coil winding pack in vacuum furnace has accomplished for about 6 weeks at 660 • C. Any severe defect was not found such as strain accelerated grain boundary oxidation [5]. To give an electrical insulation, each turn was wrapped with S-glass and finally impregnated with epoxy.…”

Section: Superconducting Magnet Systemmentioning

confidence: 99%

Completion of the KSTAR construction and its role as ITER pilot device

Yang

Kim

et al. 2008

Fusion Engineering and Design

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“…A 12 T Nb 3 Sn coil was successfully built and tested in Japan in 1985 15) and the Nb 3 Sn-based Korean Superconducting Tokamak Advanced Research (KSTAR) 16) , is just now being completed. The International Thermonuclear Experimental Reactor (ITER) is now underway and will be used as the primary example in the comparison of magnet technologies 17) .…”

Section: Fusion Magnetsmentioning

confidence: 99%

Challenges and Prospects for the Large Scale Application of Superconductivity in High Energy Physics and Fusion Programs

Gourlay

2007

TEION KOGAKU

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Synopsis:The large scale use of superconductivity continues to be dominated by applications for which there is generally no conventional option. In these cases, superconductivity has enabled new science and technology that could not exist without it. Thanks to persistent ongoing research, new ancillary technology and the development of new materials, the field is far from exhausted. The fields of fusion energy and high energy physics (HEP) have particularly benefited from the application of superconductivity. High magnetic fields are absolutely necessary to achieve the required performance parameters. Even though superconductivity is an enabling technology for these fields, it comes with a number of challenges. The progress in development of applications is driven from one side by the available materials and on the other, by the evolution, or sometimes revolution, in ancillary technologies. Technology for use in both fusion and accelerator magnets begins with the same materials and inherent constraints, yet results in substantially different configurations and unique challenges due to the operational requirements for the respective applications. This paper presents a comparison of the technology developed by the fusion and high energy physics programs, both the similarities and the differences, and prospects for future development.

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Status of the KSTAR superconducting magnet system development

Cited by 41 publications

References 15 publications

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

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

Completion of the KSTAR construction and its role as ITER pilot device

Challenges and Prospects for the Large Scale Application of Superconductivity in High Energy Physics and Fusion Programs

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