Laminar Winding for a Large Superconducting Coil

It was declared [E. Yu. Klimenko, “Large superconducting magnets for transportation,” in Proc. 19 Int. Conf. Electron. Commerce, Grenoble, 2002, pp. 275-278] that large superconducting windings would be saved from current degradation resulting from mechanical perturbations, if the winding had a strong and rigid supporting structure, and each turn is rigidly fixed for transmitting its force directly to the structure. The superconductor itself should not be used as a structural material. Many years ago an option was proposed that implements this principle. That is so-called laminar winding. The supporting structure consists of a set of flat sheets. A flexible conductor is bonded to the sheets with a layer of strong adhesive. This type of windings was successfully used for a long time. Additional functions of the sheets were cooling and protecting of the windings. Application of a film adhesive VK-36 provides dry manufacturing process. The article describes an assessment of very large laminar winding similar in parameters to ITER central solenoid, as one of possible application of the principle.