Superconductivity & Particle AcceleratorS 2026

The SCSC-IFB cable is a novel round HTS cable concept, composed of copper-plated multifilament (striated) coated conductors with inter-filament bridges. Filamentizing coated conductors and winding them helically on a metal core play roles similar to filamentizing and twisting in LTSs, effectively reducing magnetization and AC loss. A peculiar feature of the SCSC-IFB cable is the use of multifilament coated conductors with inter-filament bridges (IFBs), which allow superconducting current sharing among filaments to bypass local filament defects. Winding multifilament coated conductors helically, similar to twisting a multifilament LTS, remains effective to decouple filaments electromagnetically if the IFB interval is sufficiently large. We report on the current status of this cable's development.

This work was supported in part by the NEDO Frontier Program (JPNP14004), in part by the JSPS KAKENHI Grant Number JP22H00142, and in part by the JST-ALCA-Next Program Grant Number JPMJAN24G1.