Desgn of a 20-MJ superconducting ohmic-heating coil. [NbTi and Nb/sub 3/Sn]

Conference · Mon Jan 01 04:00:00 EST 1979

OSTI ID:5603529

Singh, S K; Murphy, J H; Janocko, M A; Haller, H E; Litz, D C; Eckels, P W; Rogers, J D; Thullen, P

Conceptual designs of 20-MJ superconducting coils which were developed to demonstrate the feasibility of an ohmic-heating system were discussed. The superconductor materials were NbTi and Nb/sub 3/Sn for the pool boil and forced-flow cooling, respectively. The coils were designed to be cryostable for bipolar operation from +7 to -7 tesla maximum field within one second. The structural design addresses the distribution of structure and structural materials used in the pulsed field environment. The cyclic stresses anticipated and the fatigue limits of the structural materials were examined in view of the operating life of the coil. The coils were designed to generate the flux swings while simultaneously meeting the limitations imposed by cooling, insulation, current density and the stresses in the materials. Both the pool and forced cooled conductors have the same criterion for cryostability, i.e., the conductor must return to the superconducting state from an initial temperature of 20/sup 0/K while the full transport current is flowing through the conductor.

• Research Organization: Westinghouse Electric Corp., Pittsburgh, PA (USA); Los Alamos Scientific Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5603529
• Report Number(s): LA-UR-79-3260; CONF-791102-52
• Country of Publication: United States
• Language: English

Related Subjects

420201 -- Engineering-- Cryogenic Equipment & Devices
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700202* -- Fusion Power Plant Technology-- Magnet Coils & Fields
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DESIGN
ELECTRIC COILS
ELECTRIC HEATING
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
HEATING
JOULE HEATING
MAGNET COILS
MAGNETS
PLASMA HEATING
RESISTANCE HEATING
STRESSES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS