Discussion of results obtained during the Phase II production in the SSC vendor qualification program

The production process of the SSC CDM outer wire and cable was almost established through the successful Phase I production of highly uniform cable of about 4,000 kg in weight. However, some minor problems were found. For example, there was a small margin over the required wire critical current (Ic) because of low critical current density (Jc). And part of the wire did not survive the sharp bend test. In order to solve these problems, wire cross-sectional design was slightly changed in Phase II. This paper describes the R ampersand D results for those improvements, as well as the evaluation of the performance of the wire produced in Phase II