2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/153312In this paper the concept and the first successful tests towards constructing a superconductive micro-undulator with a period length of 3.8 mm are described. The structures were built with a commercially available NbTi wire. A full 100 periods prototype is now under construction.Accelerator Physicstext