Title :
Electronic axial HTS dc SQUID gradiometer cooled by pulse-tube cooler
Author :
He, D.F. ; Yoshizawa, M. ; Nakamura, M. ; Itozaki, H.
Author_Institution :
Supercond. Mater. Center, Nat. Inst. for Mater. Sci., Ibaragi, Japan
fDate :
6/1/2005 12:00:00 AM
Abstract :
An electronic axial high-Tc dc SQUID gradiometer cooled by pulse-tube cooler was developed. In order to extend the operating times, a method of temperature control was used to stabilize the operating temperature of the SQUID. We used the SQUID gradiometer cooled by pulse-tube cooler to perform eddy-current nondestructive evaluation and corrosion signal detection in an unshielded environment.
Keywords :
SQUID magnetometers; computerised instrumentation; cryogenic electronics; eddy current testing; materials testing; readout electronics; temperature control; corrosion signal detection; eddy-current nondestructive evaluation; electronic axial HTS dc SQUID gradiometer; pulse-tube cooler; temperature control; Corrosion; Electromagnetic interference; Fluctuations; Helium; High temperature superconductors; Materials science and technology; SQUID magnetometers; Temperature control; Temperature sensors; Voltage; Corrosion; NDE; SQUID gradiometer; pulse-tube cooler;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2005.850019