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U.S. Department of Energy
Office of Scientific and Technical Information

Coil winding development support for the Large Coil Program

Conference ·
OSTI ID:5384859
A coil winding facility at Oak Ridge National Laboratory has been utilized for the practice winding of the type of conductors used in the Large Coil Program (LCP) on a D shaped bobbin that is approximately 2.5 m x 3.0 m. Pancake and layer windings using copper conductors that simulate LCP-type superconductors have been wound both flat and on edge at tensions up to 8500 N. A method has been developed for winding a pancake coil without splicing the conductor. A small pulsed superconducting coil has been fabricated (63.5-mm bore, 7-T field) to illustrate this spliceless pancake method. This coil also demonstrates that by winding several different superconductors simultaneously, grading can be achieved and space and cost can be optimized. A concept is proposed for winding large Nb/sub 3/Sn superconducting coils before reacting, thus avoiding damage from winding stresses after the conductor is brittle. Also described is a method of insulating after winding and reacting.
Research Organization:
Oak Ridge National Lab., TN (USA)
Sponsoring Organization:
USDOE Office of Fusion Energy
DOE Contract Number:
W-7405-ENG-26
OSTI ID:
5384859
Report Number(s):
CONF-791102--150(Draft)
Country of Publication:
United States
Language:
English