High-temperature single-layer SQUID gradiometers with long baseline and parasitic effective area compensation

Authors
Pegrum, CM Eulenburg, A Romans, EJ Carr, C Millar, AJ Donaldson, GB
Citation
Cm. Pegrum et al., High-temperature single-layer SQUID gradiometers with long baseline and parasitic effective area compensation, SUPERCOND S, 12(11), 1999, pp. 766-768
Citations number
10
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
ISSN journal
09532048 → ACNP
Volume
12
Issue
11
Year of publication
1999
Pages
766 - 768
Database
ISI
SICI code
0953-2048(199911)12:11<766:HSSGWL>2.0.ZU;2-C
Abstract
First-order HTS SQUID gradiometers were fabricated on 30 x 10 mm(2) bicryst al substrates. These devices have a baseline of 13 mm, intrinsic balance le vels of similar to 1/700 and a typical gradient sensitivity at 1 kHz of 79 fT cm(-1) Hz(-1/2). A two-SQUID coupling scheme is discussed that further e nhances the device's ability to reject uniform fields.