Numerical Study to Obtain the Improved Field Homogeneity and Enlarged Inner Diameter of HTS Bulk Magnet for Compact NMR

D. Miyazawa, Seok Beom Kim, H. Kitamura, D. Ishizuka, K. Hojo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have been studying the compact magnet for NMR device that consists of a stacked high temperature superconducting (HTS) GdBCO bulk annuli. We can generate the trapped magnetic field over 1.5 T at 77.4 K and 150 ppm/cm3 on inner diameter of 20 mm HTS bulks using field compensation methods. However, it is necessary to enlarge the inner diameter of the HTS bulk magnet because the diameter of commercial NMR probe is larger than 20 mm. In this paper, we studied an optimal shape of the stacked HTS bulk magnet to obtain the enlarged inner diameter using 3-D FEM based analysis. We was able to enlarge the inner diameter of the HTS bulk magnet from 20 mm to 34 mm remaining magnetic field strength of 1.5 T and magnetic field homogeneity of 666 ppm/cm3 by proposed passive field compensation method.

Original languageEnglish
Title of host publicationPhysics Procedia
PublisherElsevier
Pages245-248
Number of pages4
Volume65
DOIs
Publication statusPublished - 2015
Event27th International Symposium on Superconductivity, ISS 2014 - Tokyo, Japan
Duration: Nov 25 2014Nov 27 2014

Other

Other27th International Symposium on Superconductivity, ISS 2014
CountryJapan
CityTokyo
Period11/25/1411/27/14

Fingerprint

homogeneity
magnets
nuclear magnetic resonance
trapped magnetic fields
annuli
magnetic fields
field strength
probes

Keywords

  • enlarged inner diameter
  • field compensation
  • field homogeneity
  • HTS bulk magnet
  • NMR relaxometry

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Miyazawa, D., Kim, S. B., Kitamura, H., Ishizuka, D., & Hojo, K. (2015). Numerical Study to Obtain the Improved Field Homogeneity and Enlarged Inner Diameter of HTS Bulk Magnet for Compact NMR. In Physics Procedia (Vol. 65, pp. 245-248). Elsevier. https://doi.org/10.1016/j.phpro.2015.05.135

Numerical Study to Obtain the Improved Field Homogeneity and Enlarged Inner Diameter of HTS Bulk Magnet for Compact NMR. / Miyazawa, D.; Kim, Seok Beom; Kitamura, H.; Ishizuka, D.; Hojo, K.

Physics Procedia. Vol. 65 Elsevier, 2015. p. 245-248.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Miyazawa, D, Kim, SB, Kitamura, H, Ishizuka, D & Hojo, K 2015, Numerical Study to Obtain the Improved Field Homogeneity and Enlarged Inner Diameter of HTS Bulk Magnet for Compact NMR. in Physics Procedia. vol. 65, Elsevier, pp. 245-248, 27th International Symposium on Superconductivity, ISS 2014, Tokyo, Japan, 11/25/14. https://doi.org/10.1016/j.phpro.2015.05.135
Miyazawa, D. ; Kim, Seok Beom ; Kitamura, H. ; Ishizuka, D. ; Hojo, K. / Numerical Study to Obtain the Improved Field Homogeneity and Enlarged Inner Diameter of HTS Bulk Magnet for Compact NMR. Physics Procedia. Vol. 65 Elsevier, 2015. pp. 245-248
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