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.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - Jul 26 2017|
|Event||29th International Symposium on Superconductivity, ISS 2016 - Tokyo, Japan|
Duration: Dec 13 2016 → Dec 15 2016
ASJC Scopus subject areas
- Physics and Astronomy(all)