K. Nakamura et al., MAGNETIC SHIELDING EFFECT BY COMPLEX STRUCTURE WITH HTS PIPES AND FERRITE POWDER ON HTS CURRENT LEAD, IEEE transactions on applied superconductivity, 5(2), 1995, pp. 524-527
This paper presents the magnetic shielding characteristics of a comple
x structure with multiple high Tc superconductors (HTS) coaxially supe
rposed and ferrite powder padding, and its effect on the critical curr
ent increase of a HTS current lead. A model HTS current lead is insert
ed into the complex structure and cooled by LN2. The magnetic flux den
sity in the innermost HTS pipe with and without the ferrite powder, an
d the critical current of the current lead were measured and the vario
us complex structures were evaluated.