Performance of HTS SQUID coupled to cooled-Cu/superconductor pickup coil

K. Enpuku, Y. Tsuji, S. Hirakawa, M. Matsuo, T. Yoshida

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Abstract

We studied the performance of a magnetometer composed of a high T c SQUID and a large pickup coil. For the pickup coil, we consider the coil made of a cooled Cu wire or an HTS superconductor tape. A magnetometer was designed for geophysical measurement using transient electromagnetic method. The theoretical field noise of the magnetometer was 0.2-1 pT/Hz1/2 at f= 10 Hz, and 55 fT/Hz1/2 for f> 200 Hz when the pickup coil of 100 mm in diameter and of N= 50 turns was used. Preliminary experimental results using the pickup coil made of the HTS Bi-tape reasonably agreed with the theoretical prediction.

Original languageEnglish
Pages (from-to)1511-1514
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume470
Issue number20
DOIs
Publication statusPublished - Nov 1 2010

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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