Comprehensive design procedure and spreadsheet for internally cooled cabled superconductors

A comprehensive procedure has been set up to consider together the various phenomena influencing the design of an Internally Cooled Cabled Superconductor (ICCS). Sensitivity studies done for TFCX show the relative order of importance of conduit structural behavior assumption, dump circuit design, and nuclear heating rate on the cavity current density. Although none of these is completely specified or known presently, the TFCX TF coil design goal of 3500 A/cm²at 10 Tesla appears achievable using moderately optimistic assumptions. The study was done in an automated manner using spreadsheet software on a personal computer, which proved to be extremely convenient and flexible.