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

Author

Dietderich, Daniel R. ; Scanlan, Ronald M. ; Hasegawa, Takayo ; Aoki, Yuji ; Sokolowski, Robert S. ; Motowidlo, AndLeszck R.

Author_Institution

Lawrence Berkeley Lab., CA, USA

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

3577

Lastpage

3579

Abstract

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 ₂Sr₂CaCu₂O₈ 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 Bi₂Sr₂CaCu₂O₈ 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

Keywords

bismuth compounds; calcium compounds; critical currents; high-temperature superconductors; stress effects; strontium compounds; superconducting cables; Bi-2212 Rutherford cables; Bi₂Sr₂CaCu₂O₈; Bi₂Sr₂CaCu₂O₈ conductor; accelerator magnet applications; critical current variation; edge loading orientation; epoxy impregnated cables; face loading orientation; high-energy physics applications; transverse loading experiments; transverse stress; Accelerator magnets; Bismuth; Cables; Conductors; Critical current; Degradation; Physics; Stress; Strontium; Wire;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.919837

Filename

919837