Stability Characteristics of Epoxy-Impregnated Superconducting Magnets.
Abstract
Epoxy-impregnated superconducting magnets can be subjected to energy inputs from external sources or from stored energy released in the coil composite. If the energy released is sufficiently large, the temperature will rise locally driving the superconductor normal causing a magnet quench. Several superconducting coils were constructed to determine the magnitude and size of disturbances required to cause a quench. These coils were wound from multifilament, niobium titanium conductor and epoxy impregnated and fiber glass reinforced. Small electrical heaters of various sizes were embedded in the coils to initiate a normal zone. These coils were placed in a background magnetic field ranging in flux density from 0 to 5.5 T, and the energy required to cause a quench was determined as a function of the ratio of operating current to critical current at a constant field. The different size heaters allowed the energy to be distributed over various conductor volumes, and the effects of the energy spatial distribution were determined. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1981
- Accession Number
- ADA102419
Entities
People
- D. J. Waltman
- David W Taylor
- F. E. Mcdonald
- M. J. Superczynski