Conduction-Cooling System for Superconducting Magnets at 20-30 K
- Authors
- Chang, Ho-Myung; Lee, Seung Ill
- Issue Date
- Jun-2014
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Conduction-cooling; cryocooler; cryogenics; Superconducting generator
- Citation
- IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, v.24, no.3
- Journal Title
- IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
- Volume
- 24
- Number
- 3
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/16680
- DOI
- 10.1109/TASC.2013.2286680
- ISSN
- 1051-8223
- Abstract
- A cryogenic system is designed and experimentally tested for superconducting magnets conductively cooled at 20-30 K by a cryocooler. Metallic parts are fabricated for the thermal connection between coldhead of a single-stage GM cooler and six magnet bobbins in hexagonal array, and assembled with bolt-joints. The material of all parts is oxygen-free copper with a high RRR value (similar to 525), and the GM cooler is a newly released model from Sumitomo Heavy Industries. All six bobbins are uniformly cooled down to 13.0 K under no load and can be maintained at 20-30 K under additional thermal load of 26-60 W. It is verified by analytical simulation that this excellent performance is due to the extremely high thermal conductivity of copper conductors and the good thermal contacts by bolt-joints. The conduction-cooling system is a thermally feasible option for 20-30 K magnets, including the wind turbine generators.
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Collections - College of Engineering > Department of Mechanical and System Design Engineering > 1. Journal Articles
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