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To satisfy requirements of high operating current densities, compact layouts, and the possibility to reach magnetic field higher than 20  $\,\mathrm{T}$  , at temperatures from 4.2  $\,\mathrm{K}$   to 20  $\,\mathrm{K}$  , e.g., necessary for the development of next generation of colliders, the CORC &#x00AE;  cable concept is of particular interest. Based on ReBCO high temperature superconducting tapes wound around a copper former, it exploits round cross-section guaranteeing electrical and mechanical isotropy. However, these cables can degrade as a result of the winding process and operating conditions, as ReBCO tapes are strain-sensitive. This paper presents a 3D multi-physics numerical model for characterizing the critical current (  $I_{c}$  ) of bended ReBCO CORC &#x00AE;  cables, based on a  T&#x2013;A  formulation implemented in COMSOL Multiphysics &#x00AE;  coupled with a thermal model of a straight cable, already validated against experimental results. The tape is approximated as a thin shell, taking advantage of its high aspect ratio, and the   $I_{c}$   scaling for the tape accounts for the local strain. A pure geometrical strain evaluation on the tape surface allow to properly account for the punctual degradation of   $I_{c}$  , as an input for the multi-physics model. The assessment of the voltage-current curve for the bent conductor has been compared to experimental results.

CORC Cables: Numerical Characterization of the Critical Current After Bending