Flexible thermal bus for superconducting coil

A thermal bus 12, and a method of making a thermal bus, comprises: forming a number of turns of wire, or solid metal strips, wound around a component 10 to be cooled, where the turns are cut axially with the cut ends of the turns being partially peeled away from the component 10 to form a thermal bus 12 which is in thermal contact with the component 10. The thermal bus may be a flexible composite material arranged for the conductive cooling of a component 10, such as a superconducting magnet coil. The turns of the thermal bus 12 may be wound on the inside and/or outside surface of a coil 10. The turns may be impregnated with a resin or wax which may be removed from the cut end sections forming the thermal bus 12. The wire of the thermal bus 12 may be of the same dimension as the wire 14 of the superconducting coil 10. A protective layer may be arranged, prior to winding the thermal bus wire, to cover the coil wires 14 at a location where the thermal bus wires are to be cut and peeled. The thermal bus 12 may provide high thermal conductivity link, with a low thermal impedance joint and a matching thermal expansion coefficient, to a superconducting coil component 10.