A new ring-shape high-temperature superconducting trapped-field magnet

Jie Sheng, Min Zhang, Yawei Wang, Xiaojian Li, Jay Patel, Weijia Yuan

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This paper presents a new trapped-field magnet made of second-generation high-temperature superconducting (2G HTS) rings. This so-called ring-shape 2G HTS magnet has the potential to provide much stronger magnetic fields relative to existing permanent magnets. Compared to existing 2G HTS trapped- field magnets, e.g. 2G HTS bulks and stacks, this new ring-shape 2G HTS magnet is more flexible in size and can be made into magnets with large dimensions for industrial applications. Effective magnetization is the key to being able to use trapped-field magnets. Therefore, this paper focuses on the magnetization mechanism of this new magnet using both experimental and numerical methods. Unique features have been identified and quantified for this new type of HTS magnet in the field cooling and zero field cooling process. The magnetization mechanism can be understood by the interaction between shielding currents and the penetration of external magnetic fields. An accumulation in the trapped field was observed by using multiple pulse field cooling. Three types of demagnetization were studied to measure the trapped-field decay for practical applications. Our results show that this new ring-shape HTS magnet is very promising in the trapping of a high magnetic field. As a super-permanent magnet, it will have a significant impact on large-scale industrial applications, e.g. the development of HTS machines with a very high power density and HTS magnetic resonance imaging devices.

LanguageEnglish
Article number094002
Number of pages12
JournalSuperconductor Science and Technology
Volume30
Issue number9
DOIs
Publication statusPublished - 4 Aug 2017

Fingerprint

Magnets
magnets
rings
Temperature
Magnetization
Magnetic fields
Cooling
cooling
permanent magnets
magnetization
Permanent magnets
Industrial applications
magnetic fields
Demagnetization
demagnetization
Magnetic resonance
Shielding
shielding
magnetic resonance
radiant flux density

Keywords

  • 2G HTS ring
  • demagnetization
  • magnetization
  • trapped-field magnet

Cite this

@article{c35611e91a2d4bf6a6852da9c6836d3a,
title = "A new ring-shape high-temperature superconducting trapped-field magnet",
abstract = "This paper presents a new trapped-field magnet made of second-generation high-temperature superconducting (2G HTS) rings. This so-called ring-shape 2G HTS magnet has the potential to provide much stronger magnetic fields relative to existing permanent magnets. Compared to existing 2G HTS trapped- field magnets, e.g. 2G HTS bulks and stacks, this new ring-shape 2G HTS magnet is more flexible in size and can be made into magnets with large dimensions for industrial applications. Effective magnetization is the key to being able to use trapped-field magnets. Therefore, this paper focuses on the magnetization mechanism of this new magnet using both experimental and numerical methods. Unique features have been identified and quantified for this new type of HTS magnet in the field cooling and zero field cooling process. The magnetization mechanism can be understood by the interaction between shielding currents and the penetration of external magnetic fields. An accumulation in the trapped field was observed by using multiple pulse field cooling. Three types of demagnetization were studied to measure the trapped-field decay for practical applications. Our results show that this new ring-shape HTS magnet is very promising in the trapping of a high magnetic field. As a super-permanent magnet, it will have a significant impact on large-scale industrial applications, e.g. the development of HTS machines with a very high power density and HTS magnetic resonance imaging devices.",
keywords = "2G HTS ring, demagnetization, magnetization, trapped-field magnet",
author = "Jie Sheng and Min Zhang and Yawei Wang and Xiaojian Li and Jay Patel and Weijia Yuan",
year = "2017",
month = "8",
day = "4",
doi = "10.1088/1361-6668/aa7a51",
language = "English",
volume = "30",
journal = "Superconductor Science and Technology",
issn = "0953-2048",
number = "9",

}

A new ring-shape high-temperature superconducting trapped-field magnet. / Sheng, Jie; Zhang, Min; Wang, Yawei; Li, Xiaojian; Patel, Jay; Yuan, Weijia.

In: Superconductor Science and Technology, Vol. 30, No. 9, 094002, 04.08.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A new ring-shape high-temperature superconducting trapped-field magnet

AU - Sheng, Jie

AU - Zhang, Min

AU - Wang, Yawei

AU - Li, Xiaojian

AU - Patel, Jay

AU - Yuan, Weijia

PY - 2017/8/4

Y1 - 2017/8/4

N2 - This paper presents a new trapped-field magnet made of second-generation high-temperature superconducting (2G HTS) rings. This so-called ring-shape 2G HTS magnet has the potential to provide much stronger magnetic fields relative to existing permanent magnets. Compared to existing 2G HTS trapped- field magnets, e.g. 2G HTS bulks and stacks, this new ring-shape 2G HTS magnet is more flexible in size and can be made into magnets with large dimensions for industrial applications. Effective magnetization is the key to being able to use trapped-field magnets. Therefore, this paper focuses on the magnetization mechanism of this new magnet using both experimental and numerical methods. Unique features have been identified and quantified for this new type of HTS magnet in the field cooling and zero field cooling process. The magnetization mechanism can be understood by the interaction between shielding currents and the penetration of external magnetic fields. An accumulation in the trapped field was observed by using multiple pulse field cooling. Three types of demagnetization were studied to measure the trapped-field decay for practical applications. Our results show that this new ring-shape HTS magnet is very promising in the trapping of a high magnetic field. As a super-permanent magnet, it will have a significant impact on large-scale industrial applications, e.g. the development of HTS machines with a very high power density and HTS magnetic resonance imaging devices.

AB - This paper presents a new trapped-field magnet made of second-generation high-temperature superconducting (2G HTS) rings. This so-called ring-shape 2G HTS magnet has the potential to provide much stronger magnetic fields relative to existing permanent magnets. Compared to existing 2G HTS trapped- field magnets, e.g. 2G HTS bulks and stacks, this new ring-shape 2G HTS magnet is more flexible in size and can be made into magnets with large dimensions for industrial applications. Effective magnetization is the key to being able to use trapped-field magnets. Therefore, this paper focuses on the magnetization mechanism of this new magnet using both experimental and numerical methods. Unique features have been identified and quantified for this new type of HTS magnet in the field cooling and zero field cooling process. The magnetization mechanism can be understood by the interaction between shielding currents and the penetration of external magnetic fields. An accumulation in the trapped field was observed by using multiple pulse field cooling. Three types of demagnetization were studied to measure the trapped-field decay for practical applications. Our results show that this new ring-shape HTS magnet is very promising in the trapping of a high magnetic field. As a super-permanent magnet, it will have a significant impact on large-scale industrial applications, e.g. the development of HTS machines with a very high power density and HTS magnetic resonance imaging devices.

KW - 2G HTS ring

KW - demagnetization

KW - magnetization

KW - trapped-field magnet

UR - http://www.scopus.com/inward/record.url?scp=85032813927&partnerID=8YFLogxK

UR - https://researchportal.bath.ac.uk/en/publications/a-new-ring-shape-high-temperature-superconducting-trapped-field-m

UR - http://iopscience.iop.org/journal/0953-2048

U2 - 10.1088/1361-6668/aa7a51

DO - 10.1088/1361-6668/aa7a51

M3 - Article

VL - 30

JO - Superconductor Science and Technology

T2 - Superconductor Science and Technology

JF - Superconductor Science and Technology

SN - 0953-2048

IS - 9

M1 - 094002

ER -