Abstract
Abstract Different dc SQUIDs for galvanometer type high T c SQUID sensors are investigated. The aim is to achieve a high flux-to-voltage transfer function and good sensitivity to the current originated in a directly coupled pickup loop. Furthermore, the stability against external fields is investigated. For these purposes 2 and 3 junction SQUIDs with various layouts are compared. The 3 junction SQUID showed no advantage for the application in a galvanometer type SQUID sensor. For the layout slim and long SQUID loops give best results in all respects.
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