A new structure for a magnetic field concentrator using NbTi sheet superconductors

Z. Y. Zhang; S. Matsumoto; S. Choi; R. Teranishi; T. Kiyoshi

doi:10.1016/j.physc.2011.05.235

A new structure for a magnetic field concentrator using NbTi sheet superconductors

Z. Y. Zhang, S. Matsumoto, S. Choi, R. Teranishi, T. Kiyoshi

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

The magnetic lens, a new device for concentrating magnetic flux using the diamagnetism of superconductors, has been experimentally confirmed by employing HTS bulk. In this paper, a new magnetic lens made of NbTi/Cu rings is introduced. The rings, which have identical outer diameters and increasing inner diameters, were stacked to form a hollow cone. Each ring has a slit to suppress the circumference current. The slits were placed in the same position to form a leakage path. The lens was assembled in an existing cryostat system with a NbTi magnet, and the magnetic properties were measured. The concentrated magnetic flux density rose to 0.618 T when the background field reached 0.339 T at the tip of the lens. The concentration ratio was 1.82. These experimental results agree well with the numerical results.

Original language	English
Pages (from-to)	1547-1549
Number of pages	3
Journal	Physica C: Superconductivity and its applications
Volume	471
Issue number	21-22
DOIs	https://doi.org/10.1016/j.physc.2011.05.235
Publication status	Published - Nov 2011

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/j.physc.2011.05.235

Cite this

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title = "A new structure for a magnetic field concentrator using NbTi sheet superconductors",

abstract = "The magnetic lens, a new device for concentrating magnetic flux using the diamagnetism of superconductors, has been experimentally confirmed by employing HTS bulk. In this paper, a new magnetic lens made of NbTi/Cu rings is introduced. The rings, which have identical outer diameters and increasing inner diameters, were stacked to form a hollow cone. Each ring has a slit to suppress the circumference current. The slits were placed in the same position to form a leakage path. The lens was assembled in an existing cryostat system with a NbTi magnet, and the magnetic properties were measured. The concentrated magnetic flux density rose to 0.618 T when the background field reached 0.339 T at the tip of the lens. The concentration ratio was 1.82. These experimental results agree well with the numerical results.",

author = "Zhang, {Z. Y.} and S. Matsumoto and S. Choi and R. Teranishi and T. Kiyoshi",

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T1 - A new structure for a magnetic field concentrator using NbTi sheet superconductors

AU - Zhang, Z. Y.

AU - Matsumoto, S.

AU - Choi, S.

AU - Teranishi, R.

AU - Kiyoshi, T.

N1 - Funding Information: This work was partially supported by KAKENHI (Grant No. 20656015).

PY - 2011/11

Y1 - 2011/11

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AB - The magnetic lens, a new device for concentrating magnetic flux using the diamagnetism of superconductors, has been experimentally confirmed by employing HTS bulk. In this paper, a new magnetic lens made of NbTi/Cu rings is introduced. The rings, which have identical outer diameters and increasing inner diameters, were stacked to form a hollow cone. Each ring has a slit to suppress the circumference current. The slits were placed in the same position to form a leakage path. The lens was assembled in an existing cryostat system with a NbTi magnet, and the magnetic properties were measured. The concentrated magnetic flux density rose to 0.618 T when the background field reached 0.339 T at the tip of the lens. The concentration ratio was 1.82. These experimental results agree well with the numerical results.

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A new structure for a magnetic field concentrator using NbTi sheet superconductors

Abstract

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