TY - JOUR
T1 - Numerical Simulation of High-Temperature Superconducting Stacked-Tape Magnetic Lens via H-ϕ Model
AU - Li, Wenhao
AU - Zhang, Qing
AU - Ainslie, Mark
AU - Zhou, Difan
AU - He, Jinyu
AU - Zhang, Yibing
AU - Cai, Chuan
N1 - Funding Information:
The work of M.D. Ainslie was supported by the Engineering and Physical Sciences Research Council (EPSRC) Early Career Fellowship under Grant EP/P020313/1.This work was supported in part by National Natural Science Fund 52172271, in part by the Strategic Priority Research Program of ChineseAcademy of Sciences underGrant XDB25000000, and in part by Project 6140923050202.
Publisher Copyright:
© 2002-2011 IEEE.
PY - 2022/3/7
Y1 - 2022/3/7
N2 - Magnetic lens, exploiting the induced screening current, may concentrate the spatial magnetic flux. This concept has been realized by several research groups using GdBCO and/or MgB2 bulk superconductors. The limitation of the magnitude of concentrated flux density lies on the mechanical brittleness of the materials and the flux instability. High-temperature superconducting (HTS) tape possesses excellent mechanical and flux pinning properties and hence is a good candidate for magnetic lens. In this study, we implemented numerical simulations on the design of magnetic lenses using HTS stacked tapes. The models were constructed based on H-φ formulations. We investigated and compared the concentration effect of various magnetic lenses with different topologies. The results show that a central field of 22.69 T and 25.62 T can be achieved respectively with rectangular-shaped stacks and X-shaped stacks in an applied magnetic field of 20 T. An optimized design of the magnetic lens has been proposed and correspondingly the mechanism for a better concentration-effect has been explained which provides a good reference for future experiments and applications.
AB - Magnetic lens, exploiting the induced screening current, may concentrate the spatial magnetic flux. This concept has been realized by several research groups using GdBCO and/or MgB2 bulk superconductors. The limitation of the magnitude of concentrated flux density lies on the mechanical brittleness of the materials and the flux instability. High-temperature superconducting (HTS) tape possesses excellent mechanical and flux pinning properties and hence is a good candidate for magnetic lens. In this study, we implemented numerical simulations on the design of magnetic lenses using HTS stacked tapes. The models were constructed based on H-φ formulations. We investigated and compared the concentration effect of various magnetic lenses with different topologies. The results show that a central field of 22.69 T and 25.62 T can be achieved respectively with rectangular-shaped stacks and X-shaped stacks in an applied magnetic field of 20 T. An optimized design of the magnetic lens has been proposed and correspondingly the mechanism for a better concentration-effect has been explained which provides a good reference for future experiments and applications.
KW - Finite element methods
KW - magnetic shielding
KW - superconducting tapes
UR - http://www.scopus.com/inward/record.url?scp=85126311886&partnerID=8YFLogxK
U2 - 10.1109/TASC.2022.3156538
DO - 10.1109/TASC.2022.3156538
M3 - Article
AN - SCOPUS:85126311886
SN - 1051-8223
VL - 32
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 6
M1 - 4601705
ER -