Miniaturized squid module having an intermediate super conducting support for connecting squid input terminals to gradiometer wires

US5453691A · kind A · utility

Assignee

• U.S. Philips Corporation · US

Inventors

• Bernd David · Henstedt-Ulzburg, DE
• Olaf Dössel · Norderstedt, DE
• Wilfried Edeler · Hamburg, DE
• Wolfgang Hoppe · Linz, DE
• Rolf U. D. Kobs · Tornesch, DE
• Johann E. W. Kruger
• Kai-Michael Ludeke · Hamburg, DE
• Gert Rabe · Pinneberg, DE

Key dates

• Filing date: Aug 20, 1993
• Grant date: Sep 26, 1995
• Expiry date: Aug 20, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S505/846
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A miniaturized SQUID module (10), notably for multi-channel magnetometers, for measurement of varying magnetic fields in a field strength range below 10.sup.-10 T, includes superconducting and shielded connections between a SQUID chip (19) and a gradiometer (12). The module can be mounted in the lower part of a cryostat and enables a large number of measurement points per unit of surface area. The SQUID chip (19) is arranged on a fully shielded supporting plate (18) which has a width of only a few millimeters and which is provided with electronic circuitry (23), the SQUID chip (19) being connected in a superconducting manner, at least by soldering, to the wires (11) of the gradiometer (12) via a superconducting, solderable and bondable intermediate support (27).