Abstract: Coils for superconducting magnets and methods of making coils for superconducting magnets and controlling the turn-to-turn contact resistance of coils. The coils include a REBCO superconducting tape coated with a layer of tin-lead solder, co-wound with an oxidized stainless steel tape. The inclusion of tin-lead solder on the REBCO tape and a layer of oxidation on the stainless steel tape advantageously allow for tuning of the turn-to-turn contact resistance of the coil, and advantageously mitigates the effect of repeated pressure cycling on the turn-to-turn contact resistance.

Abstract: An apparatus for transferring cryogenic refrigeration includes a cryocooler interface, a housing, a working fluid, a heat exchanger, a flexible thermal link, and a remote cartridge cold head. The cryocooler interface is thermally connected to a cryocooler providing a source of refrigeration. The refrigeration is passed from the crycooler into the heat exchanger via the cryocooler interface. The remote cartridge cold head is attached to a remote location. Heat is drawn from the remote location through the remote cartridge cold head and into the heat exchanger via the working fluid within the flexible thermal link and housing. Within the heat exchanger, heat is transferred from the working fluid to the refrigeration source, such as a cryocooler; accordingly, the remote location is cooled.