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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Zeng, R. Liu, H.K. Beales, T.P. Dou, S.X. |
| Copyright Year | 2002 |
| Abstract | Long lengths of multifilamentary superconducting (BiPb)/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/ (Bi-2223)/Ag tapes up to 250 m made with "powder-in-tube" (PIT) process have been successfully prepared on a laboratory scale. Reproducible critical current density of between 12,000-18,000 A/cm/sup 2/ in the long length tapes have been achieved using the optimal reduction in flat-rolling procedure and standard flat-rolling method as the intermediate deformation between sintering periods. Several coils have been fabricated from sections of the long length tape, using the co-wound react-and-wind (R&W) procedure for double pancake-shaped coils and wind-and-react (W&R) procedure for solenoidal pancake shaped coils. Each coil was fabricated by co-wounding three tapes on 30 mm-diameter mandrel. An experimental magnet was designed and constructed by stacking together coils. Dimensions and parameters of this magnet are as follows: height, 105 mm; winding ID, 32 mm; OD, 120 mm; total number of turns, 1068. Total conductor length in the magnet was /spl sim/870 m. The coils were connected in series and then tested at 77 K. The field constant at mid-plane of the magnet, determined by introducing a Hall probe in the bore of the magnet, was /spl sim/105 Gs/A and it generated 0.24 T magnetic field at 77 K. A detailed investigation of the J/sub c/-B properties and J/sub c/-strain characteristic of the Bi-2223 tapes as designing parameters and properties of the test magnet have been carried out. |
| Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
| Starting Page | 2605 |
| Ending Page | 2608 |
| Page Count | 4 |
| File Size | 312716 |
| File Format | |
| ISSN | 10518223 |
| Volume Number | 9 |
| Issue Number | 2 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1999-06-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Superconducting magnets Coils Testing Magnetic properties Multifilamentary superconductors Superconducting films Strontium Laboratories Critical current density Stacking |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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