AC loss results of the Nb sub 3 Sn demo poloidal coil (DPC-EX)
Conference
·
· IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)
OSTI ID:5293982
- Naka Fusion Research Establishment, Japan Atomic Energy Research Inst., Naka-machi, Naka-gun, Ibaraki-ken 311-01 (JP)
AC losses in the DPC-EX, whose purpose is to demonstrate the applicability of Nb{sub 3}Sn conductor to poloidal coils for Tokamak fusion machines, was measured and the results were analyzed. The coil was fabricated with a Nb{sub 3}Sn cable-in-conduit conductor and has a 1 m diameter. Thea c loss was 9.4 kW for the pulse operation of 0 - 17 kA - 9 cycle with a ramp time of 1 s, corresponding to 6.7 T maximum field and 6.7 T/s pulse rate. It was 0.14% of the magnetic stored energy. The effective Nb{sub 3}Sn filament diameter was estimated as 32 {mu}m and the effective time constant of coupling current within the strand was calculated as 2 ms on the assumption that coupling current between strands is negligible. In this paper the limitation of the coil current due to ac losses is discussed.
- OSTI ID:
- 5293982
- Report Number(s):
- CONF-910662--
- Conference Information:
- Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 28:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
665411 -- Basic Superconductivity Studies-- (1992-)
665412* -- Superconducting Devices-- (1992-)
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700430 -- Fusion Technology-- Magnet Coils & Fields-- (1992-)
700480 -- Fusion Technology-- Component Development
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
CLOSED PLASMA DEVICES
DIVERTORS
ELECTRIC COILS
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ENERGY LOSSES
EQUIPMENT
LOSSES
MAGNET COILS
MATERIALS TESTING
Ma
Materials Studies-- (1992-)
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
OPERATION
PERFORMANCE TESTING
PHYSICAL PROPERTIES
POLOIDAL FIELD DIVERTORS
PULSED MAGNET COILS
REACTOR COMPONENTS
REACTOR OPERATION
SUPERCONDUCTING COILS
SUPERCONDUCTIVITY
TESTING
THERMONUCLEAR DEVICES
TIN ALLOYS
TOKAMAK DEVICES
665412* -- Superconducting Devices-- (1992-)
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700430 -- Fusion Technology-- Magnet Coils & Fields-- (1992-)
700480 -- Fusion Technology-- Component Development
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
CLOSED PLASMA DEVICES
DIVERTORS
ELECTRIC COILS
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ENERGY LOSSES
EQUIPMENT
LOSSES
MAGNET COILS
MATERIALS TESTING
Ma
Materials Studies-- (1992-)
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
OPERATION
PERFORMANCE TESTING
PHYSICAL PROPERTIES
POLOIDAL FIELD DIVERTORS
PULSED MAGNET COILS
REACTOR COMPONENTS
REACTOR OPERATION
SUPERCONDUCTING COILS
SUPERCONDUCTIVITY
TESTING
THERMONUCLEAR DEVICES
TIN ALLOYS
TOKAMAK DEVICES