DocumentCode
1236340
Title
Mobile HTS RF SQUID magnetometer
Author
He, D.F. ; Daibo, M. ; Yoshizawa, M.
Author_Institution
Iwate Ind. Promotion Center, Morioka, Japan
Volume
13
Issue
2
fYear
2003
fDate
6/1/2003 12:00:00 AM
Firstpage
200
Lastpage
202
Abstract
Using a simple compensation method, we developed a mobile HTS RF SQUID magnetometer. The dc and low frequency (below 20 Hz) magnetic field could be compensated very well. With the compensation, the HTS RF SQUID magnetometer remained locked while being swung at large angles in the Earth´s field. For frequencies greater than 20 Hz, there was no increase in the flux noise observed after moving the SQUID system in the Earth´s field. Using the mobile HTS RF SQUID magnetometer, we constructed an eddy current NDE system, which demonstrated the possibility of detecting defects in ferromagnetic materials.
Keywords
SQUID magnetometers; eddy current testing; high-temperature superconductors; HTS; RF SQUID magnetometer; compensation method; eddy current NDE system; ferromagnetic materials; flux noise; mobile SQUID system; Aircraft; Coils; Counting circuits; Dynamic range; Feedback; High temperature superconductors; Magnetic fields; Magnetic noise; Radio frequency; SQUID magnetometers;
fLanguage
English
Journal_Title
Applied Superconductivity, IEEE Transactions on
Publisher
ieee
ISSN
1051-8223
Type
jour
DOI
10.1109/TASC.2003.813683
Filename
1211576
Link To Document