Characterization of the stress distribution on Nb$_{3}$Sn Rutherford cables under transverse compression

Coils of high-field Nb$_{3}$Sn magnets are submitted to large loads during assembly at ambient temperature and during operation at cold. This paper addresses the characterization of the stress distribution on reacted and impregnated Nb$_{3}$Sn Rutherford cables under transverse compression, at ambient temperature, and in a similar configuration as seen during magnet assembly. We performed an experimental campaign on impregnated Nb$_{3}$Sn Rutherford cable stacks. Different test configurations have been compared in order to optimize the stress homogeneity applied on the contact surface. The cable surface reconstruction based on X-ray microtomography has been used to generate the cable geometry as input for finite-element simulations that allow to predict the effect of coil materials parameters on stress concentrations in the conductor.