Novel cryogen-free actively shielded superconducting magnets for maglev vehicles. Final report, August 1991-June 1992
Abstract
The report presents the results of a research effort into the design of a shielded superconducting magnet system for a maglev vehicle. The magnet design is based on a novel cryogen-free technology which allows operation without the use of any cryogenic fluids. This is accomplished by the use of a two-stage Gifford-McMahon (G-M) cryogenic refrigerator to provide cooling of the coil and a single cryostat thermal radiation shield by conduction. The design operating temperature of the magnet is 7.5 K, and that of the shield is 43 K. The magnet is wound with a tape form of niobium tin superconductor which allows operation at a module current density of 8100 A/sq cm at a flux density of 3.4 T at the 7.5 K temperature with a margin of 4.5 K to critical temperature. The magnet design is coupled with a linear synchronous motor and null-flux sidewall levitation system to provide a workable maglev system design. Costs for several components of the design, including coils and cryostat, shielding, and power conditioning apparatus are estimated.
- Authors:
- Publication Date:
- Research Org.:
- General Electric Co., Schenectady, NY (United States)
- OSTI Identifier:
- 5714529
- Report Number(s):
- PB-93-154771/XAB
CNN: DTFR53-91-C-00079
- Resource Type:
- Technical Report
- Resource Relation:
- Other Information: Color illustrations reproduced in black and white
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 33 ADVANCED PROPULSION SYSTEMS; LEVITATED TRAINS; SUPERCONDUCTING MAGNETS; DESIGN; COST ESTIMATION; CRYOGENIC FLUIDS; CRYOSTATS; LEVITATION; NIOBIUM ALLOYS; PLANNING; TEMPERATURE DEPENDENCE; THERMAL INSULATION; TIN ALLOYS; ALLOYS; CONTROL EQUIPMENT; ELECTRICAL EQUIPMENT; ELECTROMAGNETS; EQUIPMENT; FLUIDS; MAGNETS; SUPERCONDUCTING DEVICES; THERMOSTATS; TRAINS; VEHICLES; 665412* - Superconducting Devices- (1992-); 661210 - Cryogenics- (1992-); 330000 - Advanced Propulsion Systems
Citation Formats
Vermilyea, M E. Novel cryogen-free actively shielded superconducting magnets for maglev vehicles. Final report, August 1991-June 1992. United States: N. p., 1992.
Web.
Vermilyea, M E. Novel cryogen-free actively shielded superconducting magnets for maglev vehicles. Final report, August 1991-June 1992. United States.
Vermilyea, M E. 1992.
"Novel cryogen-free actively shielded superconducting magnets for maglev vehicles. Final report, August 1991-June 1992". United States.
@article{osti_5714529,
title = {Novel cryogen-free actively shielded superconducting magnets for maglev vehicles. Final report, August 1991-June 1992},
author = {Vermilyea, M E},
abstractNote = {The report presents the results of a research effort into the design of a shielded superconducting magnet system for a maglev vehicle. The magnet design is based on a novel cryogen-free technology which allows operation without the use of any cryogenic fluids. This is accomplished by the use of a two-stage Gifford-McMahon (G-M) cryogenic refrigerator to provide cooling of the coil and a single cryostat thermal radiation shield by conduction. The design operating temperature of the magnet is 7.5 K, and that of the shield is 43 K. The magnet is wound with a tape form of niobium tin superconductor which allows operation at a module current density of 8100 A/sq cm at a flux density of 3.4 T at the 7.5 K temperature with a margin of 4.5 K to critical temperature. The magnet design is coupled with a linear synchronous motor and null-flux sidewall levitation system to provide a workable maglev system design. Costs for several components of the design, including coils and cryostat, shielding, and power conditioning apparatus are estimated.},
doi = {},
url = {https://www.osti.gov/biblio/5714529},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jun 01 00:00:00 EDT 1992},
month = {Mon Jun 01 00:00:00 EDT 1992}
}