TY - JOUR
T1 - Numerical study to obtain the improved field homogeneity of HTS bulk magnet with enlarged inner diameter for compact NMR
AU - Fukada, S.
AU - Kim, S. B.
AU - Nakagawa, T.
AU - Nomura, R.
AU - Ueda, H.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2017/7/26
Y1 - 2017/7/26
N2 - The strength and homogeneity of the magnetic field required for NMR relaxometry device are 1.5 T and 150 ppm/cm3 respectively. It is relatively easy to generate the trapped magnetic field over 1.5 T at 77.4 K using the stacked HTS bulks, and 150 ppm/cm3 field homogeneity was obtained using the fabricated field compensation methods on HTS bulks magnet with 20 mm inner diameter. However, it is still hard to obtain 150 ppm/cm3 field homogeneity without field compensation methods. In this paper, in order to improve the trapped magnetic field homogeneity, the HTS bulk magnet with enlarged inner diameter was proposed and studied as the functions of size and shape of HTS bulk. The analytical study based on FEM was carried out to optimize the shape of HTS bulk magnet with enlarged inner diameter.
AB - The strength and homogeneity of the magnetic field required for NMR relaxometry device are 1.5 T and 150 ppm/cm3 respectively. It is relatively easy to generate the trapped magnetic field over 1.5 T at 77.4 K using the stacked HTS bulks, and 150 ppm/cm3 field homogeneity was obtained using the fabricated field compensation methods on HTS bulks magnet with 20 mm inner diameter. However, it is still hard to obtain 150 ppm/cm3 field homogeneity without field compensation methods. In this paper, in order to improve the trapped magnetic field homogeneity, the HTS bulk magnet with enlarged inner diameter was proposed and studied as the functions of size and shape of HTS bulk. The analytical study based on FEM was carried out to optimize the shape of HTS bulk magnet with enlarged inner diameter.
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U2 - 10.1088/1742-6596/871/1/012088
DO - 10.1088/1742-6596/871/1/012088
M3 - Conference article
AN - SCOPUS:85027980508
SN - 1742-6588
VL - 871
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012088
T2 - 29th International Symposium on Superconductivity, ISS 2016
Y2 - 13 December 2016 through 15 December 2016
ER -