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Test results for a subscale (100 kA) SMES splice

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2 Author(s)
Peck, S.D. ; Gen. Dynamics Space Magnetics, San Diego, CA, USA ; Zeigler, J.C.

The design for the 20 MW-hr SMES-ETM for the Bechtel concept calls for two splices per turn of conductor, and over 100 turns. The design value of resistance for the splices is on the order of 10-11 ohms (0.4) W/splice at 200 kA), which is an order of magnitude less than the state of the art for high current devices. The splice design utilizes a superconducting braid wrapped around lapped subcables for an extremely low resistance joint. A history of the manufacturing development for the splice is presented. The performance of a sub-scale version of the splice joint has been measured at Texas Accelerator Center. Values of splice resistance at 1.8 K and background fields up to 5 T are reported. Performance of a 100 kA conductor is also reported

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Magnetics, IEEE Transactions on  (Volume:30 ,  Issue: 4 )