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IntroductionIn low-and medium-energy storage rings for synchrotron radiation (SR) production, it is necessary to use high-performance insertion devices (IDs) in order to meet the increasing demand for high X-ray flux to perform life science and material science, since the maximum beam energy and beam current cannot be changed in storage rings without major rebuilds of the accelerator systems.Superconducting (SC) wigglers (SCWs) are high-performance IDs suitable for extending the spectral range of SR storage rings towards shorter wavelengths and harder X-rays. The SCWs can be either wave length shifters (WLS) with a few magnet poles with very high magnetic field or multipole wigglers (MPW) with a large number of poles with