Degaussing arrangement for maser surrounded by magnetic shielding
AssigneeRCA Corporation
InventorEdwin A. Goldberg
Life of this patent
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Abstract
One or more additional helical coil windings (each situated within a space between adjacent ones of a plurality of paced ferromagnetic shielding cans of graduated size and (each one of which encloses all cans smaller than itself), are oriented coaxial with the helical coil winding of the maser itself (situated within the innermost can). This permits optimum degaussing to be achieved with small degaussing current.
Claims9
A degaussing arrangement for a maser surrounded by magnetic shielding, wherein said shielding comprises a plurality of spaced ferromagnetic cans of graduated size each of which encloses all cans smaller than itself, wherein said maser is situated within the interior of the smallest and hence innermost one of said cans, and wherein said maser includes a given helical coil winding situated within the interior of said innermost can and adapted to produce within the interior of said innermost can during operation of the maser a substantially uniform D.C. magnetic field in a direction substantially parallel to the axis of said given helical coil winding in response to a D.C. current flowing through said given helical coil winding;
- said degaussing arrangement comprising:
- said given helical coil winding and at least one additional helical coil winding oriented substantially coaxial with said given helical coil winding, any additional helical coil winding being situated exterior to said innermost can and within a space between two adjacent ones of said cans, whereby degaussing of said shielding is achieved by simultaneously applying A.C. degaussing current to said given and additional helical coil windings.
Dependencies are inferred from the claim text.