Feasibility Study for Elimination of the Screening Current-Induced Fields in HTS Coil
Herein, we report a feasibility study for elimination of the screening current-induced field (SCIF) in fully insulated (INS) and no-insulation (NI) GdBCO coated conductor (CC) coils exposed to an external AC magnetic field generated by background solenoid copper coils. Prior to investigating the eff...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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Springer US
2016
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| Online Access: | http://hdl.handle.net/1721.1/105214 |
| _version_ | 1811068465679695872 |
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| author | Kazikawa, K. Kim, K. L. Choi, Y. H. Kim, Y. G. Kang, D. H. Lee, H. G. Hahn, Seung-Yong |
| author2 | Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology) |
| author_facet | Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology) Kazikawa, K. Kim, K. L. Choi, Y. H. Kim, Y. G. Kang, D. H. Lee, H. G. Hahn, Seung-Yong |
| author_sort | Kazikawa, K. |
| collection | MIT |
| description | Herein, we report a feasibility study for elimination of the screening current-induced field (SCIF) in fully insulated (INS) and no-insulation (NI) GdBCO coated conductor (CC) coils exposed to an external AC magnetic field generated by background solenoid copper coils. Prior to investigating the effects of external AC magnetic fields on SCIF in the GdBCO CC coils, the magnetic flux density (B[subscript z]) was calculated using the equivalent circuit model and compared to the B[subscript z] obtained empirically to quantify the SCIF in the INS and NI coils. The value of the SCIF in the NI coil was smaller than that in the INS coil without the use of an external AC magnetic field, due to the current paths originating from the turn-to-turn and layer-to-layer contacts, suggesting that the screening current dissipated by contact resistance during charging. When the INS and NI coils were exposed to the external AC magnetic field, the B[subscript z] of the coils increased gradually, and eventually saturating to the calculated B[subscript z] values, indicating full removal of the SCIF. In addition, the SCIF of the NI coil could be removed under subjection to a lower external AC magnetic field compared to the INS coil, due to the lower SCIF occurring in the NI coil after charging. |
| first_indexed | 2024-09-23T07:56:25Z |
| format | Article |
| id | mit-1721.1/105214 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T07:56:25Z |
| publishDate | 2016 |
| publisher | Springer US |
| record_format | dspace |
| spelling | mit-1721.1/1052142022-09-23T09:46:51Z Feasibility Study for Elimination of the Screening Current-Induced Fields in HTS Coil Kazikawa, K. Kim, K. L. Choi, Y. H. Kim, Y. G. Kang, D. H. Lee, H. G. Hahn, Seung-Yong Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology) Hahn, Seung-Yong Herein, we report a feasibility study for elimination of the screening current-induced field (SCIF) in fully insulated (INS) and no-insulation (NI) GdBCO coated conductor (CC) coils exposed to an external AC magnetic field generated by background solenoid copper coils. Prior to investigating the effects of external AC magnetic fields on SCIF in the GdBCO CC coils, the magnetic flux density (B[subscript z]) was calculated using the equivalent circuit model and compared to the B[subscript z] obtained empirically to quantify the SCIF in the INS and NI coils. The value of the SCIF in the NI coil was smaller than that in the INS coil without the use of an external AC magnetic field, due to the current paths originating from the turn-to-turn and layer-to-layer contacts, suggesting that the screening current dissipated by contact resistance during charging. When the INS and NI coils were exposed to the external AC magnetic field, the B[subscript z] of the coils increased gradually, and eventually saturating to the calculated B[subscript z] values, indicating full removal of the SCIF. In addition, the SCIF of the NI coil could be removed under subjection to a lower external AC magnetic field compared to the INS coil, due to the lower SCIF occurring in the NI coil after charging. Korea (South). Ministry of Education, Science and Technology (MEST). Mid-Career Researcher Program (Grant 2012-046999) Korea (South). Ministry of Knowledge Economy (MKE). International Collaborative R&D Program (KETEP Grant 20118520020020) 2016-11-04T20:26:31Z 2016-11-04T20:26:31Z 2014-11 2014-07 2016-08-18T15:43:59Z Article http://purl.org/eprint/type/JournalArticle 1557-1939 1557-1947 http://hdl.handle.net/1721.1/105214 Kim, K. L. et al. “Feasibility Study for Elimination of the Screening Current-Induced Fields in HTS Coil.” Journal of Superconductivity and Novel Magnetism 28.1 (2015): 83–88. en http://dx.doi.org/10.1007/s10948-014-2790-y Journal of Superconductivity and Novel Magnetism Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Springer Science+Business Media New York application/pdf Springer US Springer US |
| spellingShingle | Kazikawa, K. Kim, K. L. Choi, Y. H. Kim, Y. G. Kang, D. H. Lee, H. G. Hahn, Seung-Yong Feasibility Study for Elimination of the Screening Current-Induced Fields in HTS Coil |
| title | Feasibility Study for Elimination of the Screening Current-Induced Fields in HTS Coil |
| title_full | Feasibility Study for Elimination of the Screening Current-Induced Fields in HTS Coil |
| title_fullStr | Feasibility Study for Elimination of the Screening Current-Induced Fields in HTS Coil |
| title_full_unstemmed | Feasibility Study for Elimination of the Screening Current-Induced Fields in HTS Coil |
| title_short | Feasibility Study for Elimination of the Screening Current-Induced Fields in HTS Coil |
| title_sort | feasibility study for elimination of the screening current induced fields in hts coil |
| url | http://hdl.handle.net/1721.1/105214 |
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