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Transformer-rectifier flux pump using inductive current transfer and thermally controlled Nb(3)Sn cryotrons
1Department of Physics, Queen's University, Kingston, Ontario K7L 3N6, Canada.
The Review of Scientific Instruments
|October 1, 1979
Summary
Transformer-rectifier flux pumps with Nb(3)Sn cryotrons show promise for superconducting magnets in the Canadian Maglev. High currents of 1000 A were achieved in an experimental flux pump, demonstrating potential for loss compensation.
Area of Science:
- Applied Physics
- Superconductivity Engineering
- Transportation Technology
Background:
- Superconducting magnets require loss compensation for stable operation.
- Isochorically operated (sealed) superconducting magnets are proposed for the Canadian Maglev vehicle.
- Transformer-rectifier flux pumps offer a potential solution for loss make-up.
Purpose of the Study:
- To investigate transformer-rectifier flux pumps utilizing thermally switched Nb(3)Sn cryotrons.
- To assess the feasibility of these flux pumps as a loss make-up device for Canadian Maglev superconducting magnets.
- To achieve high currents for effective operation.
Main Methods:
- Utilized transformer-rectifier flux pumps with thermally switched Nb(3)Sn cryotrons.
- Employed inductive current transfer for energy transmission.
- Operated the experimental flux pump at a frequency of 2 Hz.
Main Results:
- Achieved high currents of 1000 A in an experimental flux pump.
- Demonstrated the functionality of the flux pump using inductive current transfer.
- Confirmed operation at 2 Hz.
Conclusions:
- Transformer-rectifier flux pumps with Nb(3)Sn cryotrons are viable for superconducting magnet loss compensation.
- The experimental results support the use of these devices for the Canadian Maglev project.
- High current capability is achievable for practical applications.
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