Accession Number : AD0787109

Title :   Low Noise, Permanently Adjusted UHF Squid Magnetometer.

Descriptive Note : Technical rept.,

Corporate Author : CORNELL UNIV ITHACA N Y MATERIALS SCIENCE CENTER

Personal Author(s) : Clark,T. D. ; Jackel,L. D.

Report Date : 01 OCT 1974

Pagination or Media Count : 5

Abstract : The report concerns the development of a simple 450MHz SQUID magnetometer, using a symmetric two-hole permanently adjusted point contact SQUID ring. One hole of the SQUID ring is coupled to the center conductor of a resonant superconducting coaxial cavity. A superconducting coil, inserted into the other hole, allows the coupling of an external flux into the SQUID system. The sensitivity is an order of magnitude better than that attained with identical SQUID rings biased at approximately 10MHz. It is shown that this improvement can be achieved simply and relatively inexpensively, and without sacrificing the excellent flux coupling attainable with such SQUID rings. (Modified author abstract)

Descriptors :   *Magnetometers, Ultrahigh frequency, Superconductors, Rings, Niobium, Cavities, Cavity resonators, Magnetic fields, Flux(Rate)

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE