MgB2 cylindrical superconducting shielding for cryogenic measurement applications: a case study on DC current transformers

被引：16

作者：

Arpaia, P. ^{[1
,2
]}

Ballarino, A. ^{[2
]}

Giunchi, G. ^{[3
]}

Montenero, G. ^{[2
]}

机构：

[1] Univ Sannio, Dipartimento Ingn, I-82100 Benevento, Italy

[2] CERN European Lab Nucl Res, Dept Technol, Grp Magnets Supercond & Cryostats, CH-1211 Geneva 23, Switzerland

[3] Mat Sci Consultant, Milan, Italy

来源：

JOURNAL OF INSTRUMENTATION | 2014年 / 9卷

关键词：

Instrumentation for particle accelerators and storage rings - high energy (linear accelerators; synchrotrons); Accelerator Subsystems and Technologies; Special cables; Accelerator Applications;

D O I：

10.1088/1748-0221/9/04/P04020

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A method for designing cylindrical hollow superconducting shields for cryogenic measurement devices operating in background fields of 1 T is proposed. The shield design is based on MgB2 composite, manufactured by the reactive Mg liquid infiltration process [1]. The MgB2 composite allows low-cost shields with good mechanical resistance to be realized easily. The geometrical design is benchmarked by the experimental characterization at 4.2 K. A design case study for the shield of a cryogenic DC current transformer is reported. Design results show a shielding efficiency of 70% for both the axial and radial components, with prospective measurement accuracy up to 10 ppm on 100 kA.

引用

页数：16

共 24 条

[1]

[Anonymous], 2005, 564604 ATMEL EDMS

[2]

Arpaia P., 2014, JINST 9 P03011

[3] A device for measuring high current at cryogenic temperatures [J].