In order to reduce thermal inputs through many measuring copper leads, we intended to fabricate a measuring leads unit using very fine YBa2Cu3O7 filaments. The long YBa2Cu3O7 filaments were prepared by a textile fiber spinning method for the oxide precursor. The 60 filaments with a size of 100 μm in diameter and 60 mm in length were attached onto three fiber-reinforced polymers, and were covered with epoxy resin. Both ends of the YBa2Cu3O7 filament were soldered with pin connectors through copper leads with 0.1 mm in diameter. The YBa2Cu3O7 measuring leads unit of 60 terminals was cooled by a pulse tube cryocooler. The newly developed YBa2Cu3O7 measuring leads unit demonstrates the extremely small heat loads of 1/10 in comparison with conventional copper measuring leads.
- Measuring leads
- Superconducting filament
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering