Nonlinear Behavior of a Shim Coil in an LTS/HTS NMR Magnet With an HTS Insert Comprising Double-Pancake HTS-Tape Coils
This paper reports results, experimental and analytical, of the nonlinear behavior of a shim coil in the presence of an HTS coil assembled with double-pancake (DP) HTS-tape coils. The experimental results are from: 1) operation of a 700 MHz LTS/HTS NMR magnet (LH700) consisting of a 600 MHz LTS NMR...
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| Format: | Article |
| Language: | en_US |
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Institute of Electrical and Electronics Engineers
2010
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| Online Access: | http://hdl.handle.net/1721.1/52431 https://orcid.org/0000-0001-5712-7350 |
| _version_ | 1826203185991122944 |
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| author | Iwasa, Yukikazu Bascunan, Juan Yao, Weijun Ahn, Min Cheol Hahn, Seung-Yong |
| author2 | Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology) |
| author_facet | Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology) Iwasa, Yukikazu Bascunan, Juan Yao, Weijun Ahn, Min Cheol Hahn, Seung-Yong |
| author_sort | Iwasa, Yukikazu |
| collection | MIT |
| description | This paper reports results, experimental and analytical, of the nonlinear behavior of a shim coil in the presence of an HTS coil assembled with double-pancake (DP) HTS-tape coils. The experimental results are from: 1) operation of a 700 MHz LTS/HTS NMR magnet (LH700) consisting of a 600 MHz LTS NMR magnet (L600) equipped with superconducting shim coils and a 100 MHz DP-assembled HTS insert (H100) and; 2) an experiment with a room-temperature (RT) Z1 shim coil coupled to a 50 MHz DP-assembled HTS insert (H50). A field mapping theory with a harmonic analysis is applied to interpret both results. Based on experimental results and analyses, we conclude that the screening-current-induced field (SCF) generated by a DP-assembled HTS insert is primarily responsible for the nonlinear behavior, including strength degradation, of a shim coil. |
| first_indexed | 2024-09-23T12:32:57Z |
| format | Article |
| id | mit-1721.1/52431 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:32:57Z |
| publishDate | 2010 |
| publisher | Institute of Electrical and Electronics Engineers |
| record_format | dspace |
| spelling | mit-1721.1/524312022-10-01T09:41:34Z Nonlinear Behavior of a Shim Coil in an LTS/HTS NMR Magnet With an HTS Insert Comprising Double-Pancake HTS-Tape Coils Iwasa, Yukikazu Bascunan, Juan Yao, Weijun Ahn, Min Cheol Hahn, Seung-Yong Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology) Hahn, Seung-Yong Iwasa, Yukikazu Bascunan, Juan Yao, Weijun Ahn, Min Cheol Hahn, Seung-Yong This paper reports results, experimental and analytical, of the nonlinear behavior of a shim coil in the presence of an HTS coil assembled with double-pancake (DP) HTS-tape coils. The experimental results are from: 1) operation of a 700 MHz LTS/HTS NMR magnet (LH700) consisting of a 600 MHz LTS NMR magnet (L600) equipped with superconducting shim coils and a 100 MHz DP-assembled HTS insert (H100) and; 2) an experiment with a room-temperature (RT) Z1 shim coil coupled to a 50 MHz DP-assembled HTS insert (H50). A field mapping theory with a harmonic analysis is applied to interpret both results. Based on experimental results and analyses, we conclude that the screening-current-induced field (SCF) generated by a DP-assembled HTS insert is primarily responsible for the nonlinear behavior, including strength degradation, of a shim coil. National Institutes of Health, National Center for Research Resources 2010-03-09T19:13:14Z 2010-03-09T19:13:14Z 2009-07 2008-08 Article http://purl.org/eprint/type/JournalArticle 1051-8223 http://hdl.handle.net/1721.1/52431 Seung-yong Hahn et al. “Nonlinear Behavior of a Shim Coil in an LTS/HTS NMR Magnet With an HTS Insert Comprising Double-Pancake HTS-Tape Coils.” Applied Superconductivity, IEEE Transactions on 19.3 (2009): 2285-2288. © 2009 IEEE https://orcid.org/0000-0001-5712-7350 en_US http://dx.doi.org/10.1109/tasc.2009.2018809 IEEE Transactions on Applied Superconductivity 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. application/pdf Institute of Electrical and Electronics Engineers IEEE |
| spellingShingle | Iwasa, Yukikazu Bascunan, Juan Yao, Weijun Ahn, Min Cheol Hahn, Seung-Yong Nonlinear Behavior of a Shim Coil in an LTS/HTS NMR Magnet With an HTS Insert Comprising Double-Pancake HTS-Tape Coils |
| title | Nonlinear Behavior of a Shim Coil in an LTS/HTS NMR Magnet With an HTS Insert Comprising Double-Pancake HTS-Tape Coils |
| title_full | Nonlinear Behavior of a Shim Coil in an LTS/HTS NMR Magnet With an HTS Insert Comprising Double-Pancake HTS-Tape Coils |
| title_fullStr | Nonlinear Behavior of a Shim Coil in an LTS/HTS NMR Magnet With an HTS Insert Comprising Double-Pancake HTS-Tape Coils |
| title_full_unstemmed | Nonlinear Behavior of a Shim Coil in an LTS/HTS NMR Magnet With an HTS Insert Comprising Double-Pancake HTS-Tape Coils |
| title_short | Nonlinear Behavior of a Shim Coil in an LTS/HTS NMR Magnet With an HTS Insert Comprising Double-Pancake HTS-Tape Coils |
| title_sort | nonlinear behavior of a shim coil in an lts hts nmr magnet with an hts insert comprising double pancake hts tape coils |
| url | http://hdl.handle.net/1721.1/52431 https://orcid.org/0000-0001-5712-7350 |
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