A 100-kA indirectly cooled superconductor has been designed and optimized for the heliotron fusion power reactor FFHR. A doubly transposed Rutherford cable composed of 216 Nb3Sn superconducting wires is embedded in an aluminum-alloy jacket with a high filling factor. Additional high purity aluminum strips around the cable reduce the hotspot temperature to 150 K. The final design has a rectangular cross section that is 100mm wide and 25mm high, which will achieve an operating current of 100 kA at a current density of 40A/mm2. A prototype of the conductor was developed to demonstrate the fabrication process. The prototype has the same configuration as the design, except that the aluminum strips are eliminated.
CITATION STYLE
Takahata, K., Tamura, H., Mito, T., Imagawa, S., & Sagara, A. (2014). Development of an indirectly cooled superconductor for the LHD fusion reactor FFHR. Plasma and Fusion Research, 9(SpecialIssue2). https://doi.org/10.1585/pfr.9.3405034
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