An Analytical Technique to Elucidate Field Impurities From Manufacturing Uncertainties of an Double Pancake Type HTS Insert for High Field LTS/HTS NMR Magnets
Name
Hahn_Analytical-Technique-to-Elucidate.pdf
Size
397.13 KB
Format
Adobe PDF
Checksum (MD5)
651e93abb8ae006b35f044b111163bb1
Author(s)
Iwasa, Yukikazu
Bascunan, Juan
Bobrov, Emanuel Saul
Ahn, Min Cheol
Hahn, Seung-Yong
Date Issued
July 2009
Journal
IEEE Transactions on Applied Superconductivity
Publisher
Institute of Electrical and Electronics Engineers
Citation
Seung-yong Hahn et al. “An Analytical Technique to Elucidate Field Impurities From Manufacturing Uncertainties of an Double Pancake Type HTS Insert for High Field LTS/HTS NMR Magnets.” Applied Superconductivity, IEEE Transactions on 19.3 (2009): 2281-2284. © 2009 IEEE
Version
Final published version
Abstract
This paper addresses adverse effects of dimensional uncertainties of an HTS insert assembled with double-pancake coils on spatial field homogeneity. Each DP coil was wound with Bi2223 tapes having dimensional tolerances larger than one order of magnitude of those accepted for LTS wires used in conventional NMR magnets. The paper presents: 1) dimensional variations measured in two LTS/HTS NMR magnets, 350 MHz (LH350) and 700 MHz (LH700), both built and operated at the Francis Bitter Magnet Laboratory; and 2) an analytical technique and its application to elucidate the field impurities measured with the two LTS/HTS magnets. Field impurities computed with the analytical model and those measured with the two LTS/HTS magnets agree quite well, demonstrating that this analytical technique is applicable to design a DP-assembled HTS insert with an improved field homogeneity for a high-field LTS/HTS NMR magnet.
MIT Department
Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology)
Terms of Use
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.
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.1109/tasc.2009.2018808
