A dual-washer superconducting quantum interference device(SQUID) with a loop inductance of 350 pH and two onwasher integrated input coils is designed according to conventional niobium technology. In order to obtain a large SQUID flux-to-voltage transfer coefficient, the junction shunt resistance is selected to be 33 ?. A vertical SQUID gradiometer module with a baseline of 100 mm is constructed by utilizing such a SQUID and a first-order niobium wire-wound antenna.The sensitivity of this module reaches abou...
【英文摘要】
A dual-washer superconducting quantum interference device(SQUID) with a loop inductance of 350 pH and two onwasher integrated input coils is designed according to conventional niobium technology. In order to obtain a large SQUID flux-to-voltage transfer coefficient, the junction shunt resistance is selected to be 33Ω. A vertical SQUID gradiometer module with a baseline of 100 mm is constructed by utilizing such a SQUID and a first-order niobium wire-wound antenna.The sensitivity of this module reaches about...
【基金】
Project supported by the Main Direction Program of Knowledge Innovation of the Chinese Academy of Sciences(Grant No.KGCX2-EW-105);
the “100 Talents Project” of the Chinese Academy of Sciences and Strategic Priority Research Program(B)of the Chinese Academy of Sciences(Grant No.XDB04020200)
【更新日期】
2014-08-29
【分类号】
O413
【正文快照】
1.IntroductionMagnetocardiography(MCG)is a useful diagnostic tech-nique measuring the magnetic field signals generated frommyocardial current.[1]In order to suppress the environmen-tal noise and detect the human heart magnetic field,super-conducting quant
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