Electricity: measuring and testing – Magnetic – With temperature control of material or element of test circuit
Patent
1975-12-29
1977-12-13
Krawczewicz, Stanley T.
Electricity: measuring and testing
Magnetic
With temperature control of material or element of test circuit
350151, 324244, 324248, G01R 3302
Patent
active
040631583
ABSTRACT:
An optical gaussmeter for determining the magnitude and homogeneity of the magnetic field in the core of a superconducting magnet includes a crystal of calcium fluoride doped with divalent thulium disposed in the core of the magnet. The crystal is exposed to RF radiation and to a narrow beam of light filtered to a wavelength corresponding to the absorption band of the divalent thulium in the crystal. The light beam signal as altered by the absorption characteristics of the crystal corresponds to the measured magnet current which manifests the field magnitude to be determined.
REFERENCES:
patent: 2844789 (1958-07-01), Allen
patent: 2879401 (1959-03-01), Chicurel
patent: 2913665 (1959-11-01), Bomke
patent: 2968799 (1961-01-01), Smith
patent: 3257608 (1966-06-01), Bell et al.
Anderson Charles Hammond
Sabisky Edward Stephen
Christoffersen H.
Cohen Samuel
Krawczewicz Stanley T.
RCA Corporation
Squire William
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