Field mapping, NMR lineshape, and screening currents induced field analyses for homogeneity improvement in LTS/HTS NMR magnets

Seung Yong Hahn; Juan Bascuñán; Woo Seok Kim; Emanuel S. Bobrov; Haigun Lee; Yukikazu Iwasa

doi:10.1109/TASC.2008.921225

Field mapping, NMR lineshape, and screening currents induced field analyses for homogeneity improvement in LTS/HTS NMR magnets

Seung Yong Hahn, Juan Bascuñán, Woo Seok Kim, Emanuel S. Bobrov, Haigun Lee, Yukikazu Iwasa

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

67 Citations (Scopus)

Abstract

This paper describes two general methods: field map processing and NMR lineshape analysis, that we are currently using for the on-going research of field improvement techniques specifically applied to our 700 MHz LTS/HTS NMR magnet. The validity of the methods is verified with comparison between calculations and experiments. Also, a simple but effective analysis has been used to identify the principal source of a remanent magnetic field measured in the bore of the 700 MHz LTS/HTS NMR magnet: the Screening Current induced Field (SCF) from the 100-MHz HTS insert, comprised of 48 double pancake coils, each wound with Bi2223 tape.

Original language	English
Article number	4497933
Pages (from-to)	856-859
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	18
Issue number	2
DOIs	https://doi.org/10.1109/TASC.2008.921225
Publication status	Published - 2008 Jun

Keywords

Field mapping
LTS/HTS NMR magnet
Nmr lineshape
Screening currents induced field (SCF)

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1109/TASC.2008.921225

Cite this

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title = "Field mapping, NMR lineshape, and screening currents induced field analyses for homogeneity improvement in LTS/HTS NMR magnets",

abstract = "This paper describes two general methods: field map processing and NMR lineshape analysis, that we are currently using for the on-going research of field improvement techniques specifically applied to our 700 MHz LTS/HTS NMR magnet. The validity of the methods is verified with comparison between calculations and experiments. Also, a simple but effective analysis has been used to identify the principal source of a remanent magnetic field measured in the bore of the 700 MHz LTS/HTS NMR magnet: the Screening Current induced Field (SCF) from the 100-MHz HTS insert, comprised of 48 double pancake coils, each wound with Bi2223 tape.",

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AU - Bascuñán, Juan

AU - Kim, Woo Seok

AU - Bobrov, Emanuel S.

AU - Lee, Haigun

AU - Iwasa, Yukikazu

N1 - Funding Information: Manuscript received August 27, 2007. This work was supported by the NIH National Center for Research Resources.

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Field mapping, NMR lineshape, and screening currents induced field analyses for homogeneity improvement in LTS/HTS NMR magnets

Abstract

Keywords

ASJC Scopus subject areas

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