Mobile High- $T_{\\rm c}$ SQUID System for MCG Measurement

Author

Oyama, Daisuke ; Kobayashi, Koichiro ; Yoshizawa, Masahito ; Uchikawa, Yoshinori

Author_Institution

Iwate Univ., Morioka, Japan

Volume

19

Issue

3

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

871

Lastpage

873

Abstract

We developed a mobile high critical temperature (high-T _c) superconducting quantum interference device (SQUID) system for a magnetocardiogram (MCG) measurement. The device is composed of a small cryostat, a high-T _c SQUID magnetometer, and digital flux-locked loop (FLL) electronics. A small commercially obtained vacuum bottle enables the device to be hand-held. Large dynamic range was achieved through the digital FLL processing. We also proved the feasibility of this mobile high-T _c SQUID system using simple construction. MCG measurements while holding a cryostat and also in unshielded conditions were successfully demonstrated.

Keywords

SQUID magnetometers; cryostats; magnetocardiography; MCG measurement; SQUID magnetometers; cryostat; digital flux-locked loop electronics; high critical temperature superconducting quantum interference device; magnetocardiogram measurement; mobile high-T_c SQUID system; unshielded conditions; vacuum bottle; Flux-locked loop (FLL); SQUID magnetometers; magnetocardiogram; mobile;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2009.2019200

Filename

5067197

Mobile High- SQUID System for MCG Measurement

Oyama, Daisuke ; Kobayashi, Koichiro ; Yoshizawa, Masahito ; Uchikawa, Yoshinori

jour

Mobile High- $T_{\\rm c}$ SQUID System for MCG Measurement