Journal
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Volume 18, Issue 2, Pages 856-859Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TASC.2008.921225
Keywords
field mapping; LTS/HTS NMR magnet; NMR lineshape; screening currents induced field (SCF)
Funding
- National Research Foundation of Korea [과C6A2001] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- NCRR NIH HHS [R01 RR015034] Funding Source: Medline
- NIGMS NIH HHS [R01 GM137138] Funding Source: Medline
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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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