Abstract
We fabricated a high-temperature superconducting (HTS) magnet with a persistent current switch (PCS) and evaluated the decay characteristics of persistent mode and joint resistance at 77 K. To make the HTS magnet, BSCCO(2223) tapes were wound into a double-pancake coil and connected to the PCS by soldering. Field decay behavior was remarkably dependent on operating current. At an operating current of 50% of the critical current (Ic), decay behavior showed two distinct regimes: initial fast decay and subsequent linear decay. By contrast, there was a linear decay regime of only 13% of I c. Total circuit resistance was approximately 2.0×10 -8 Ω at an operating current of 6 A. Measured decay behavior was closely consistent with the calculated decay behavior obtained from both the index resistance and joint resistance components.
Original language | English |
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Pages (from-to) | 1026-1029 |
Number of pages | 4 |
Journal | Physica C: Superconductivity and its Applications |
Volume | 412-414 |
Issue number | SPEC. ISS. |
DOIs | |
State | Published - Oct 2004 |
Keywords
- HTS magnet
- Persistent current switch
- Persistent mode