Title :
High linear dynamic range magnetometer utilizing a large array of serially connected SQUIDS
Author :
Kin Li ; Hubbell, S.P.
Author_Institution :
Defense & Space Group, Boeing Co., Seattle, WA, USA
fDate :
6/1/1997 12:00:00 AM
Abstract :
A 7104-element serially connected SQUID array magnetometer has been designed and tested. The array had a measured magnetic field to voltage transfer function dV/dB of 1.2/spl times/10/sup 5/ volt/Tesla and a peak to peak modulation voltage of 0.6 volt. The sensitivity of the array magnetometer is 105 fT/Hz/sup 1/2/ at 20 kHz, and is limited by the 1/f noise of SQUIDs. The effective signal collection area of the array is 0.018 cm/sup 2/. The measured dynamic range of the array is 126 dB.
Keywords :
SQUID magnetometers; 1/f noise; 20 kHz; linear dynamic range; magnetic field to voltage transfer function; peak to peak modulation voltage; sensitivity; serially connected SQUID array magnetometer; signal collection area; Coils; Dynamic range; Magnetic field measurement; Magnetic fields; Magnetic noise; SQUID magnetometers; Testing; Transfer functions; Voltage; Working environment noise;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
