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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Koizumi, N. Nunoya, Y. Okuno, K. |
| Copyright Year | 2002 |
| Abstract | The ITER model coil experiments have revealed that degradation of the critical current (Ic) and n index occurred in large Nb 3Sn CICC's and the larger the electromagnetic force, the larger was the degradation. However, such degradation was not observed in the Nb3Al CICC. The authors developed a new model, in which the degradation of the Ic and n index of an individual strand was taken into account, to interpret these results. Analytical model corrected from experimental results of a single strand is used in this model to estimate the degradation of each strand. The calculation results are in good agreement with the CICCs' test results. In addition, it is indicated that in case of the Nb3Sn CICC, the normal transition occurs from the strands at low field side in CICC cross section, where transverse load due to the electromagnetic force is the largest, resulting in the significant degradation in the Ic and the n index. In contrast, in the case of the Nb3Al CICC, the normal transition takes place from the strands at high field in the CICC cross section, where the transverse load is small, resulting in no degradation in the Ic and the n index |
| Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
| Starting Page | 831 |
| Ending Page | 834 |
| Page Count | 4 |
| File Size | 232397 |
| File Format | |
| ISSN | 10518223 |
| Volume Number | 16 |
| Issue Number | 2 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2006-06-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Critical current Degradation Magnetic field induced strain Coils Testing Electromagnetic forces Analytical models Strain measurement Magnetic field measurement Electromagnetic modeling strand bending CICC critical current degradation ITER |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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