FLUX NOISE FROM A METAL SURROUNDING A SUPERCONDUCTING WIRE APPLIED TO A GRADIOMETER

被引：1
作者：
TAKADA, Y [1 ]
UEDA, M [1 ]
KADO, H [1 ]
机构：
[1] ELECTROTECH LAB,TSUKUBA,IBARAKI 305,JAPAN
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1995年 / 34卷 / 6B期
关键词：
NIOBIUM-TITANIUM ALLOY; NB-TI/CU; FIRST-ORDER GRADIOMETER; SQUID; TWISTED PAIR OF WIRES; SUPERCONDUCTING WIRE;
D O I：
10.1143/JJAP.34.L738
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We measure the flux noise generated from a metal covering a superconducting wire. The flux noise from a twisted pair of wires wound with niobium-titanium alloy wire wrapped with copper (Nb-Ti/Cu) is both measured and calculated for various wire lengths. Flux noise is confirmed to be related to the wire length. The flux noise from a first-order gradiometer wound with Nb-Ti/Cu wire is also measured and calculated. The flux noise from this gradiometer, formed with a radius of 7 mm, a base Line of 50 mm, and length of 60 mm for a twisted pair of wires, is calculated to be 4.33 mu Phi(0)/Hz(1/2) which is in good agreement with the measured result.
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页码：L738 / L740
页数：3
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