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

D. Miyazawa, S. B. Kim, H. Kitamura, D. Ishizuka, K. Hojo

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

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
Pages (from-to)245-248
Number of pages4
JournalPhysics Procedia
Volume65
DOIs
Publication statusPublished - 2015
Event27th International Symposium on Superconductivity, ISS 2014 - Tokyo, Japan
Duration: Nov 25 2014Nov 27 2014

Keywords

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

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Numerical Study to Obtain the Improved Field Homogeneity and Enlarged Inner Diameter of HTS Bulk Magnet for Compact NMR'. Together they form a unique fingerprint.

Cite this