Speaker
Description
Structural issues in high-temperature superconducting (HTS) magnets under high magnetic fields have garnered significant attention in recent years. While much of the research has focused on the electromagnetic forces induced by operational and screening currents during magnet operation, the mechanical behavior of HTS magnets during fabrication and cooling stages remains underexplored.
This study investigates the mechanical characteristics of small-scale HTS coils by analyzing the displacement of linear surface markings applied during the winding and cooling processes. By drawing reference lines from the bobbin to the wound turns, we track the movement of each turn and assess the coil’s structural behavior under varying conditions. Various factors during the magnet fabrication process—such as winding tension, friction between turns, the anchoring method of the first turn, and the finishing technique for the last turn—can significantly influence these displacements. These movements, combined with thermal contraction during cooling, may lead to deformations that affect the overall integrity of the magnet.
Through experiments conducted on modular coils under different fabrication and cooling conditions, we aim to uncover how these variables impact the mechanical state of HTS magnets. The resulting displacement patterns provide valuable insights into the structural responses of larger-scale HTS coils, allowing for a more comprehensive understanding of their mechanical stability during non-operational stages.
