Operation and performance analyses of 350 and 700 MHz low-/high-temperature superconductor nuclear magnetic resonance magnets: A march toward operating frequencies above 1 GHz
DC Field | Value | Language |
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dc.contributor.author | Hahn, S. | - |
dc.contributor.author | Bascuán, J. | - |
dc.contributor.author | Lee, H. | - |
dc.contributor.author | Bobrov, E.S. | - |
dc.contributor.author | Kim, W. | - |
dc.contributor.author | Ahn, M.C. | - |
dc.contributor.author | Iwasa, Y. | - |
dc.date.accessioned | 2021-09-09T00:15:55Z | - |
dc.date.available | 2021-09-09T00:15:55Z | - |
dc.date.created | 2021-06-17 | - |
dc.date.issued | 2009 | - |
dc.identifier.issn | 0021-8979 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/121863 | - |
dc.description.abstract | Since 2000, a three-phase program with a final goal to complete a 1 GHz high-resolution low-/high-temperature superconductor (LTS/HTS) nuclear magnetic resonance (NMR) magnet has been conducted at the Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology (MIT). In a LTS/HTS magnet assembly, a HTS insert is placed in the cold bore of a LTS background magnet. To date, two LTS/HTS magnets have been designed, constructed, and tested: a 350 MHz (LH350) in phase 1 and a 700 MHz (LH700) in phase 2. The program's target has recently been upgraded from the original goal of 1 GHz to a new goal of 1.3 GHz. In this paper, we present extensive performance analyses of the two LTS/HTS NMR magnets. Spatial homogeneity and temporal stability of LH350 and LH700, examined with harmonic analysis, and four key issues that became evident in the operation of these two magnets are discussed: (1) field constant reduction, (2) large residual Z1 gradient and its temporal decay, (3) large one-periodic tesseral field gradients, and (4) screening-current-induced field in the HTS inserts. © 2009 American Institute of Physics. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.subject | Atoms | - |
dc.subject | Electric batteries | - |
dc.subject | Electric conductivity | - |
dc.subject | Fourier series | - |
dc.subject | Harmonic analysis | - |
dc.subject | High temperature superconductors | - |
dc.subject | Magnetic resonance | - |
dc.subject | Nuclear magnetic resonance | - |
dc.subject | Nuclear magnetic resonance spectroscopy | - |
dc.subject | Resonance | - |
dc.subject | Superconducting materials | - |
dc.subject | Superconductivity | - |
dc.subject | Field gradients | - |
dc.subject | High resolutions | - |
dc.subject | In-phase | - |
dc.subject | Induced fields | - |
dc.subject | Lts/hts magnets | - |
dc.subject | Lts/hts nmr magnets | - |
dc.subject | Massachusetts institute of technologies | - |
dc.subject | Nuclear magnetic resonance magnets | - |
dc.subject | Operating frequencies | - |
dc.subject | Performance analysis | - |
dc.subject | Spatial homogeneities | - |
dc.subject | Temporal decays | - |
dc.subject | Temporal stabilities | - |
dc.subject | Magnets | - |
dc.title | Operation and performance analyses of 350 and 700 MHz low-/high-temperature superconductor nuclear magnetic resonance magnets: A march toward operating frequencies above 1 GHz | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, H. | - |
dc.identifier.doi | 10.1063/1.3065538 | - |
dc.identifier.scopusid | 2-s2.0-59349087549 | - |
dc.identifier.bibliographicCitation | Journal of Applied Physics, v.105, no.2 | - |
dc.relation.isPartOf | Journal of Applied Physics | - |
dc.citation.title | Journal of Applied Physics | - |
dc.citation.volume | 105 | - |
dc.citation.number | 2 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | Atoms | - |
dc.subject.keywordPlus | Electric batteries | - |
dc.subject.keywordPlus | Electric conductivity | - |
dc.subject.keywordPlus | Fourier series | - |
dc.subject.keywordPlus | Harmonic analysis | - |
dc.subject.keywordPlus | High temperature superconductors | - |
dc.subject.keywordPlus | Magnetic resonance | - |
dc.subject.keywordPlus | Nuclear magnetic resonance | - |
dc.subject.keywordPlus | Nuclear magnetic resonance spectroscopy | - |
dc.subject.keywordPlus | Resonance | - |
dc.subject.keywordPlus | Superconducting materials | - |
dc.subject.keywordPlus | Superconductivity | - |
dc.subject.keywordPlus | Field gradients | - |
dc.subject.keywordPlus | High resolutions | - |
dc.subject.keywordPlus | In-phase | - |
dc.subject.keywordPlus | Induced fields | - |
dc.subject.keywordPlus | Lts/hts magnets | - |
dc.subject.keywordPlus | Lts/hts nmr magnets | - |
dc.subject.keywordPlus | Massachusetts institute of technologies | - |
dc.subject.keywordPlus | Nuclear magnetic resonance magnets | - |
dc.subject.keywordPlus | Operating frequencies | - |
dc.subject.keywordPlus | Performance analysis | - |
dc.subject.keywordPlus | Spatial homogeneities | - |
dc.subject.keywordPlus | Temporal decays | - |
dc.subject.keywordPlus | Temporal stabilities | - |
dc.subject.keywordPlus | Magnets | - |
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