An example electric circuit includes a superconducting component having a first terminal and a second terminal, the superconducting component including a first portion, a second portion, and a third portion electrically connecting the first portion with the second portion. The example circuit also includes an electrically-insulating component that thermally couples the first portion with the second portion such that heat produced in response to the first portion transitioning to a non-superconducting state is transferred through the electrically-insulating component to the second portion. The example circuit further includes an input component coupled to the first portion, the input component configured to supply an input to the first portion, and an output component coupled to the second terminal of the superconducting component, the output component configured to be responsive to a voltage drop across the superconducting component.

An example electric circuit includes a superconducting component having a first terminal and a second terminal, the superconducting component including a first portion, a second portion, and a third portion electrically connecting the first portion with the second portion. The example circuit also includes an electrically-insulating component that thermally couples the first portion with the second portion such that heat produced in response to the first portion transitioning to a non-superconducting state is transferred through the electrically-insulating component to the second portion. The example circuit further includes an input component coupled to the first portion, the input component configured to supply an input to the first portion, and an output component coupled to the second terminal of the superconducting component, the output component configured to be responsive to a voltage drop across the superconducting component.

A pipe for a superconducting electrical connection, forming a unit intended to be connected at its ends for a formation of the superconducting electrical connection, includes a cryostat forming a pipe-in-pipe comprising an inner tube and an outer tube which are coaxial and a thermal insulator occupying the annular area between the outer tube and the inner tube; and a superconducting cable core housed inside the inner tube, the superconducting cable core having, at ambient temperature, an excess length with respect to the length of the cryostat such that, in its superconducting state, the length of the cable core is greater than or equal to the length of the cryostat.

A pipe for a superconducting electrical connection, forming a unit intended to be connected at its ends for a formation of the superconducting electrical connection, includes a cryostat forming a pipe-in-pipe comprising an inner tube and an outer tube which are coaxial and a thermal insulator occupying the annular area between the outer tube and the inner tube; and a superconducting cable core housed inside the inner tube, the superconducting cable core having, at ambient temperature, an excess length with respect to the length of the cryostat such that, in its superconducting state, the length of the cable core is greater than or equal to the length of the cryostat.

A system includes a cable passing from a first plate to a second plate via an intermediate plate, an attachment coupling the cable to the intermediate plate, and a conductive cladding connected to an outer surface of the cable and extended a first length from the attachment toward the second plate. The total length of the thermally conductive cladding is larger than the total length of the attachment, and the cable is thermally connected to the first plate, the second plate, and the intermediate plate.