Effect of core width, placement, and condition on calorimetrically measured AC loss and interstrand contact resistance of stainless-steel-cored Nb3Sn Rutherford cables

被引:4
|
作者
Collings, E. W. [1 ]
Sumption, M. D. [1 ]
Barzi, E. [2 ]
Turrioni, D. [2 ]
Yamada, R. [2 ]
Zlobin, A. V. [2 ]
Ilyin, Y. [3 ]
Nijhuis, A. [3 ]
机构
[1] Ohio State Univ, LASM, MSE Dept, Columbus, OH 43210 USA
[2] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
[3] Univ Twente, Fac Appl Phys, Low Temp Div, NL-7500 AE Enschede, Netherlands
关键词
AC loss; calorimetric measurement; interstrand contact resistance; Nb3Sn; Rutherford cable;
D O I
10.1109/TASC.2008.921893
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Calorimetric measurements of AC loss were made on Nb3Sn Rutherford cables furnished with cores of widths 4.5, 5.2, and 10.8 mm in the face-on (FO) and edge-on (EO) orientations of the applied AC field. The resulting FO-measured effective mterstrand contact resistances, R-perpendicular to,R-ef f., were compared with that of the uncored cable after which it was noted that although the uncored R-perpendicular to,R-eff. agreed well with those of previously measured cables, the cored values -0.3 to 8 mu Omega-were lower than expectation. The relatively low R(perpendicular to,eff.)s are attributed to (i) drifting of the narrower cores to one edge of the cable (ii) shrinkage of the effective width of the widest core as a result of severe texturization. After correcting for these deficiencies the projected R-perpendicular to,R-eff. for the widest-core cable moved closer to the range of values expected for a full-width-core Nb3Sn cable.
引用
收藏
页码:1370 / 1373
页数:4
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