Test Results of the DPC-TJ-Stability Performance

In this paper stability test results of the DPC-TJ coil are summarized. The DPC-TJ coil is a cable-in-conduit forced-flow type large superconducting coil and is cooled by supercritical helium. Stability test was performed with an inductive heating method, and the dependencies of the stability margins on the operating current and on the heating duration were investigated. The relation between the heating power and the take-off time, defined as the time from the start of heating till the appearance of the normalcy on the conductor, was also studied. Major results are as follows: The so-called limiting currents were not obvious within the present test conditions. The influence of the heating duration on the stability margin was little. And the heating power was inversely proportional to the square root of the take-off time up to about 20ms.