Bridgold In Superconducting Technology Applications

With over 10 years of expertise in copper busbars, we possess in-depth knowledge of the unique demands of superconducting systems—high-current transmission within cryostats, extremely low thermal leakage requirements, stringent insulation withstand, and vibration resistance. From material selection and structural design to insulation withstand and temperature-rise validation, we offer customized solutions throughout the entire design cycle, ensuring the high reliability and safety of copper busbars as critical transition connections between room-temperature terminals and superconducting magnets/cables.

Copper busbars deliver three core functions in superconducting technology:

High-current transmission – connecting superconducting magnet power supplies to cryostat feedthroughs, carrying thousands of amperes of DC current;

Equipotential bonding and grounding – equalizing enclosure and structural potentials while providing safe protection paths;

Absorbing vibration and thermal stress – cushioning mechanical stress from cryocooler vibration and temperature variations.

Laminated Busbars: Low parasitic inductance effectively suppresses transient overvoltage, protecting sensitive superconducting magnets and power devices; flat profile saves limited space within cryostats; custom L/Z shapes available.

Braided Busbars: Ultimate flexibility with an extremely small bending radius, effectively absorbing cryocooler vibration and thermal contraction displacement; the braided structure distributes stress against high-frequency fatigue; excellent heat dissipation minimizes localized heating.