Influence of Mechanical Deformations of HTSC Tapes on the Current-Carrying Characteristics in the Creation of a CORC Cable

被引：2
|
作者：
Veselova, S. V. [1 ]
Abin, D. A. [1 ]
Starikovskii, A. S. [1 ]
Pokrovskii, S. V. [1 ]
Rudnev, I. A. [1 ]
Novikov, M. S. [2 ]
机构：
[1] Natl Res Nucl Univ MEPhI Moscow Engn Phys Inst, Moscow 115409, Russia
[2] Joint Inst Nucl Res, Dubna 141980, Russia
来源：
PHYSICS OF ATOMIC NUCLEI | 2022年 / 85卷 / 11期
关键词：
superconductor; HTSC tape; CORC cable; mechanical strain; critical current;
D O I：
10.1134/S1063778822100611
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
High-temperature superconducting magnets are a system with a complex configuration. In the process of creating such systems, HTSC tapes can be subject to mechanical damage, which leads to a deterioration in the transport characteristics of the tape. This paper presents the results of experimental studies of the effect of mechanical stresses on the transport characteristics of the second-generation HTSC tapes. The volt-ampere characteristics of various samples of second-generation HTSC tapes were measured during their winding on cylindrical formers of various diameters. Winding was carried out at the angles of 22 degrees and 40 degrees relative to the former axis with a force from 10 to 20 N. Different winding options were compared and the optimal set of winding configurations corresponding to the minimum degradation of the critical current of the tape was determined. Scanning Hall magnetometry is used to determine the regions of localization of defects arising at various winding options. All measurements were carried out at the boiling point of liquid nitrogen. The obtained data made it possible to calculate the area of flow of the longitudinal and transverse components of the current in each individual case.
引用
收藏
页码：1853 / 1858
页数：6
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