Cryostability experiments of force cooled superconductors

Results of new experiments in the testing of cryostability of a force-cooled superconducting cable are reported. The cable was tested at a steady field (8 T), steady current, helium flow and helium pressure as well as a transient heating pulse. Although the cable had a looser weave than a previous test coil, it demonstrated about 30% higher recovery currents under identical operating conditions. In these experiments it was possible to demonstrate the independence of recovery current over a wide range of flow and a limited inverse dependence of recovery current as a function of mean helium pressure.