Stability of superconductors cooled internally by He II heat transfer

✍ Scribed by S.W. Van Sciver

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 476 KB
• Volume: 31
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(91)90038-x

✦ Synopsis

He II (superfluid helium) is a unique fluid which offers substantial advantages when utilized as a coolant for large superconducting magnets. One of the principal advantages of He II is its extremely high heat conductivity which allows rapid diffusion of localized transient heating. The present paper reviews the processes involved in transient heat transfer in He I1. Emphasis is placed on those processes which are particularly relevant to the stability of superconducting magnets. The implications that these processes have on predicting the performance of actual magnet systems are also discussed. A recent experiment involving composite superconductors cooled with He II demonstrates the importance of transient heat transfer for obtaining stability in these systems.