Stacked Squid Arrays.
Abstract
The described invention is briefly summarized as a means for increasing the sensitivity of Josephson Junction Cryogenic Magnetometers by unique design and construction of DC SQUID arrays. The SQUIDS are arrayed vertically and the sensitivity of each sensing point is increased by making an intimate, co-axial superposition of two or more two-junction SQUID loops using, for example, evaporated thin-film technology although fabrication is not limited solely to this technique. The device permits multiple SQUID loops to enclose the same applied magnetic flux thereby increasing the sensing volume and improving the coupling to the applied magnetic field. A primary object of invention is to provide a magnetometer of greatly reduced size, greatly increased sensitivity, and the capability to measure higher-order derivatives of magnetic fields. A further object of invention is to provide a magnetic sensing device employing a plurality of DC SQUID loops, each enclosing the same magnetic flux and a method for producing such a device. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 20, 1979
- Accession Number
- ADD006033
Entities
People
- George F. Hinton
Organizations
- United States Department of the Navy