DocumentCode
43959
Title
An Effort Toward Development of 
-Based Current Leads With 2000-A Rating
Author
Devadas, K.M. ; Rahul, Saladi ; Thomas, Stephan ; Varghese, Nisha ; Pradhan, Subrata ; Syamaprasad, U.
Author_Institution
Nat. Inst. for Interdiscipl. Sci. & Technol., Trivandrum, India
Volume
24
Issue
4
fYear
2014
fDate
Aug. 2014
Firstpage
1
Lastpage
5
Abstract
In this paper, we report an effort toward the development of general-purpose conduction-cooled current leads based on MgB2, which can carry 2000 A at 25 K. The leads have an overall length of 40 cm and a diameter of 5.8 mm, with Cu end caps with a length of 5 cm each for anchoring them to the superconducting system and the current source. Fe, Cu, and Ni are used as the barrier, the stabilizer, and the outer sheath materials, respectively. The critical parameters of the current leads, such as rated current Ic, thermal cycling stability, and heat leak, were tested and evaluated using a cryocooler-integrated cryostat test facility.
Keywords
boron alloys; copper; iron; magnesium alloys; nickel; thermal stability; type II superconductors; MgB2; cryocooler-integrated cryostat test facility; current 2000 A; current leads; current source; general-purpose conduction-cooled current; heat leak; outer sheath materials; rated current; size 40 cm; size 5.8 mm; superconducting system; temperature 25 K; thermal cycling stability; Conductivity; Electron tubes; Iron; Materials; Nickel; Thermal conductivity; Wires; $hbox{MgB}_{2}$; Current lead; superconducting devices; superconductivity;
fLanguage
English
Journal_Title
Applied Superconductivity, IEEE Transactions on
Publisher
ieee
ISSN
1051-8223
Type
jour
DOI
10.1109/TASC.2014.2311413
Filename
6776433
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