Critical current variation as a function of transverse stress of Bi-2212 Rutherford cables

Transverse loading experiments on wire has shown that a significant drop in critical current occurs for stresses greater than 50 MPa. However, many high-energy physics applications require that the Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8/ conductor withstand stresses greater than 100 MPa without permanent degradation. Therefore, a study of epoxy impregnated cables, identical to those used in accelerator magnet applications, has been performed. This work presents the first results of Rutherford cables of Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8/ with transverse stress. The results show that the cable can withstand stresses up to 60 MPa with a strain of about 0.3% for the face loading orientation and 100 MPa for the edge loading orientation.