Abstract
We focus on a react and wind Bi-2223 conductor with a pure silver matrix. The stress–strain–critical current relation is determined for coils with a uniform stress distribution, at 4.2 K and 19 T. Somewhat surprisingly, the coils fail at a Lorentz force induced strain value close to the value for uni-axially loaded straight samples. This implies that bending strain is only partially retained due to the plastic nature of the pure silver matrix. Also, a double-pancake coil with a 15 mm winding thickness, resulting in a non-uniform stress distribution, is tested at 4.2 K and 19 T. The coil current is cycled with increasing peak values and the onset and evolution of critical current degradation in the coil is shown.
Original language | English |
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Pages (from-to) | 1160-1164 |
Number of pages | 5 |
Journal | Physica C |
Volume | 357-360 |
Issue number | Part 2 |
DOIs | |
Publication status | Published - 2001 |
Event | 13th International Symposium on Superconductivity, ISS 2000 - Nihon Toshi Center Kaikan, Tokyo, Japan Duration: 14 Oct 2000 → 16 Oct 2000 Conference number: 13 |
Keywords
- Lorentz force
- Bi-2223