Metal working – Method of mechanical manufacture – Electrical device making
Patent
1979-08-22
1981-06-09
Moon, Charlie T.
Metal working
Method of mechanical manufacture
Electrical device making
335216, 174126S, 174128S, 29605, H01V 1100, H01F 722
Patent
active
042715857
ABSTRACT:
A superconducting magnet designed to produce magnetic flux densities of the order of 4 to 5 Webers per square meter is constructed by first forming a cable of a plurality of matrixed superconductor wires with each wire of the plurality insulated from each other one. The cable is shaped into a rectangular cross-section and is wound with tape in an open spiral to create cooling channels. Coils are wound in a calculated pattern in saddle shapes to produce desired fields, such as dipoles, quadrupoles, and the like. Wedges are inserted between adjacent cables as needed to maintain substantially radial placement of the long dimensions of cross sections of the cables. After winding, individual strands in each of the cables are brought out to terminals and are interconnected to place all of the strands in series and to maximize the propagation of a quench by alternating conduction from an inner layer to an outer layer and from top half to bottom half as often as possible. Individual layers are separated from others by spiraled aluminum spacers to facilitate cooling. The wound coil is wrapped with an epoxy tape that is cured by heat and then machined to an interference fit with an outer aluminum pipe which is then affixed securely to the assembled coil by heating it to make a shrink fit. In an alternate embodiment, one wire of the cable is made of copper or the like to be heated externally to propagate a quench.
REFERENCES:
patent: 3356976 (1967-12-01), Sampson et al.
patent: 3431523 (1969-03-01), Donadieu
patent: 3626341 (1971-12-01), Dao
patent: 3731241 (1973-05-01), Coopland
Denny James E.
Jackson Frank H.
Moon Charlie T.
Reynolds Donald P.
Rising V. K.
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