Feasible Applications of Bulk HTS Magnets and Magnetic Field-Capturing Characteristics in Their Activation Processes

Tetsuo Oka, Akira Takeda, Kouki Shimizu, Kazuya Higa, Shunta Tsunoda, Jun Ogawa, Satoshi Fukui, Takao Sato, Kazuya Yokoyama, Takashi Nakamura

Research output: Contribution to journalArticle

Abstract

Feasible applications in the industrial regions for the bulk HTS magnets have been investigated in two categories of the strong magnetic field generators and the magnetic levitation devices by active and passive field-trapping, respectively. when we adopt the system to the active field generators, magnetization procedures are necessary. The authors have studied the field-capturing abilities of the HTS bulk magnets on two ways of the activation procedure and the material designing. In the former, we clarified the magnetic flux behavior which invades into bulk magnets, and that the invading flux motion is affected by the previously-existing flux distribution. Therefore, the magnetic flux can be accumulated with successive magnetic fields applications with descending heat generation in order. In the latter, the selective magnetic field invasion was observed between wide- and narrow-growth sector regions. Since the bulk magnets with steep magnetic field distributions deform their own field distribution shape to be uniform by the shielding effect when the ferromagnetic plate was attached on the magnetic pole, we have succeeded in obtaining the uniform magnetic field of several-hundred ppm in the space between the magnetic poles.

Original languageEnglish
JournalIEEE Transactions on Applied Superconductivity
DOIs
Publication statusAccepted/In press - 2018 Aug 28
Externally publishedYes

Fingerprint

Magnets
magnets
Chemical activation
activation
Magnetic fields
magnetic poles
magnetic fields
Magnetic flux
magnetic flux
Poles
generators
Fluxes
Magnetic levitation
heat generation
levitation
Heat generation
Shielding
shielding
Magnetization
sectors

Keywords

  • bulk superconductor
  • heat generation
  • Magnetic flux
  • magnetic flux
  • Magnetic levitation
  • Magnetic noise
  • Magnetic shielding
  • magnetization
  • Magnetostatics
  • pulsed field
  • Superconducting magnets

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Feasible Applications of Bulk HTS Magnets and Magnetic Field-Capturing Characteristics in Their Activation Processes. / Oka, Tetsuo; Takeda, Akira; Shimizu, Kouki; Higa, Kazuya; Tsunoda, Shunta; Ogawa, Jun; Fukui, Satoshi; Sato, Takao; Yokoyama, Kazuya; Nakamura, Takashi.

In: IEEE Transactions on Applied Superconductivity, 28.08.2018.

Research output: Contribution to journalArticle

Oka, Tetsuo ; Takeda, Akira ; Shimizu, Kouki ; Higa, Kazuya ; Tsunoda, Shunta ; Ogawa, Jun ; Fukui, Satoshi ; Sato, Takao ; Yokoyama, Kazuya ; Nakamura, Takashi. / Feasible Applications of Bulk HTS Magnets and Magnetic Field-Capturing Characteristics in Their Activation Processes. In: IEEE Transactions on Applied Superconductivity. 2018.
@article{37df42b1453b4538900c57da1f5a61ea,
title = "Feasible Applications of Bulk HTS Magnets and Magnetic Field-Capturing Characteristics in Their Activation Processes",
abstract = "Feasible applications in the industrial regions for the bulk HTS magnets have been investigated in two categories of the strong magnetic field generators and the magnetic levitation devices by active and passive field-trapping, respectively. when we adopt the system to the active field generators, magnetization procedures are necessary. The authors have studied the field-capturing abilities of the HTS bulk magnets on two ways of the activation procedure and the material designing. In the former, we clarified the magnetic flux behavior which invades into bulk magnets, and that the invading flux motion is affected by the previously-existing flux distribution. Therefore, the magnetic flux can be accumulated with successive magnetic fields applications with descending heat generation in order. In the latter, the selective magnetic field invasion was observed between wide- and narrow-growth sector regions. Since the bulk magnets with steep magnetic field distributions deform their own field distribution shape to be uniform by the shielding effect when the ferromagnetic plate was attached on the magnetic pole, we have succeeded in obtaining the uniform magnetic field of several-hundred ppm in the space between the magnetic poles.",
keywords = "bulk superconductor, heat generation, Magnetic flux, magnetic flux, Magnetic levitation, Magnetic noise, Magnetic shielding, magnetization, Magnetostatics, pulsed field, Superconducting magnets",
author = "Tetsuo Oka and Akira Takeda and Kouki Shimizu and Kazuya Higa and Shunta Tsunoda and Jun Ogawa and Satoshi Fukui and Takao Sato and Kazuya Yokoyama and Takashi Nakamura",
year = "2018",
month = "8",
day = "28",
doi = "10.1109/TASC.2018.2867784",
language = "English",
journal = "IEEE Transactions on Applied Superconductivity",
issn = "1051-8223",
publisher = "Institute of Electrical and Electronics Engineers Inc.",

}

TY - JOUR

T1 - Feasible Applications of Bulk HTS Magnets and Magnetic Field-Capturing Characteristics in Their Activation Processes

AU - Oka, Tetsuo

AU - Takeda, Akira

AU - Shimizu, Kouki

AU - Higa, Kazuya

AU - Tsunoda, Shunta

AU - Ogawa, Jun

AU - Fukui, Satoshi

AU - Sato, Takao

AU - Yokoyama, Kazuya

AU - Nakamura, Takashi

PY - 2018/8/28

Y1 - 2018/8/28

N2 - Feasible applications in the industrial regions for the bulk HTS magnets have been investigated in two categories of the strong magnetic field generators and the magnetic levitation devices by active and passive field-trapping, respectively. when we adopt the system to the active field generators, magnetization procedures are necessary. The authors have studied the field-capturing abilities of the HTS bulk magnets on two ways of the activation procedure and the material designing. In the former, we clarified the magnetic flux behavior which invades into bulk magnets, and that the invading flux motion is affected by the previously-existing flux distribution. Therefore, the magnetic flux can be accumulated with successive magnetic fields applications with descending heat generation in order. In the latter, the selective magnetic field invasion was observed between wide- and narrow-growth sector regions. Since the bulk magnets with steep magnetic field distributions deform their own field distribution shape to be uniform by the shielding effect when the ferromagnetic plate was attached on the magnetic pole, we have succeeded in obtaining the uniform magnetic field of several-hundred ppm in the space between the magnetic poles.

AB - Feasible applications in the industrial regions for the bulk HTS magnets have been investigated in two categories of the strong magnetic field generators and the magnetic levitation devices by active and passive field-trapping, respectively. when we adopt the system to the active field generators, magnetization procedures are necessary. The authors have studied the field-capturing abilities of the HTS bulk magnets on two ways of the activation procedure and the material designing. In the former, we clarified the magnetic flux behavior which invades into bulk magnets, and that the invading flux motion is affected by the previously-existing flux distribution. Therefore, the magnetic flux can be accumulated with successive magnetic fields applications with descending heat generation in order. In the latter, the selective magnetic field invasion was observed between wide- and narrow-growth sector regions. Since the bulk magnets with steep magnetic field distributions deform their own field distribution shape to be uniform by the shielding effect when the ferromagnetic plate was attached on the magnetic pole, we have succeeded in obtaining the uniform magnetic field of several-hundred ppm in the space between the magnetic poles.

KW - bulk superconductor

KW - heat generation

KW - Magnetic flux

KW - magnetic flux

KW - Magnetic levitation

KW - Magnetic noise

KW - Magnetic shielding

KW - magnetization

KW - Magnetostatics

KW - pulsed field

KW - Superconducting magnets

UR - http://www.scopus.com/inward/record.url?scp=85052654928&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85052654928&partnerID=8YFLogxK

U2 - 10.1109/TASC.2018.2867784

DO - 10.1109/TASC.2018.2867784

M3 - Article

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

ER -