Techniques for forming a conductive joint between superconducting cables and related systems and methods

A superconducting magnet comprising:

• a first superconducting cable comprising:
• a first core comprising a first plurality of high temperature superconductor (HTS) components;
• a first joint box arranged at an end of the first superconducting cable, with a portion of the first core arranged inside the first joint box;
• a first plurality of conductive joint elements arranged at least partially within the first joint box and arranged side-by-side over the portion of the first core arranged inside the first joint box, wherein the first plurality of conductive joint elements collectively exhibit a first planar surface;
• a second superconducting cable comprising:
• a second core comprising a second plurality of high temperature superconductor (HTS) components;
• a second joint box arranged at an end of the second superconducting cable, with a portion of the second core arranged inside the second joint box;
• a second plurality of conductive joint elements arranged at least partially within the second joint box and arranged side-by-side over the portion of the second core arranged inside the second joint box, wherein the second plurality of conductive joint elements collectively exhibit a second planar surface;
• and
• solder arranged within:
• the first core, the second core, the first joint box and the second joint box,
• wherein the first planar surface and the second planar surface are arranged face-to-face with one another and electrically connected to one another.

A method of forming a joint between superconducting cables, the method comprising:

• inserting an end of a superconducting cable core comprising a plurality of high temperature superconductor (HTS) components into a joint box;
• arranging one or more conductive joint elements over portions of the superconducting cable core within the joint box;
• directing a molten metal through the superconducting cable core and through the joint box, thereby electrically connecting at least some of the plurality of HTS components to at least some of the one or more conductive joint elements via the molten metal;
• and
• subsequent to cooling of the molten metal, removing material from an exposed upper surface of the one or more conductive joint elements to form a planar surface.