Demonstration of [Formula Omitted] React-and-Wind Coil

The critical temperature of [Formula Omitted] exceeds that of NbTi, making it a superior choice for superconducting applications. By utilizing liquid hydrogen instead of liquid helium for cooling [Formula Omitted] coils, the cost of cooling can be reduced greatly, particularly when combined with hydrogen technology. In addition, in cryogen-free magnets, [Formula Omitted] coils offer energy-saving benefits as the cooling efficiency increases with the operating temperature. The use of [Formula Omitted] wires in superconducting applications becomes feasible when considering cost advantages. The react-and-wind (R&W) method can reduce the manufacturing cost by eliminating the need for a furnace for coil heat treatment and enables the use of impregnated resins and supports without concerns regarding high-temperature durability. We fabricated an R&W [Formula Omitted] coil with a minimum radius of 55 mm. This paper presents the details of the fabricated coil and measurement results.