Operating characteristics of HTS power supply for and improving temporal stability of coated conductor magnet in liquid helium

D. K. Park, Y. J. Kim, S. E. Yang, N. Y. Kwon, H. G. Lee, Tae Kuk Ko

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

High temperature superconducting (HTS) magnets have been studied for insert coils of high field nuclear magnetic resonance (NMR) magnets but the temporal stability required for NMR is hard to achieve due to low index value and high joint resistance. In this research, the HTS power supply with magnets using coated conductor (CC) was investigated and tested in helium cryogenic system. All joints were conducted by soldering after etching stabilizer of the CC to minimize joint resistance. The pumping rate was determined by current amplitude and timing sequential control of heaters and the electromagnet. Operating characteristics were analyzed to enhance charging efficiency and the feasibility of temporally stable CC magnet during persistent mode was studied.

Original languageEnglish
Pages (from-to)1804-1807
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume469
Issue number15-20
DOIs
Publication statusPublished - 2009 Oct 15

Fingerprint

Helium
liquid helium
power supplies
Magnets
magnets
conductors
sequential control
Liquids
Nuclear magnetic resonance
nuclear magnetic resonance
Electromagnets
electromagnets
soldering
Superconducting magnets
Soldering
superconducting magnets
inserts
heaters
Cryogenics
Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

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title = "Operating characteristics of HTS power supply for and improving temporal stability of coated conductor magnet in liquid helium",
abstract = "High temperature superconducting (HTS) magnets have been studied for insert coils of high field nuclear magnetic resonance (NMR) magnets but the temporal stability required for NMR is hard to achieve due to low index value and high joint resistance. In this research, the HTS power supply with magnets using coated conductor (CC) was investigated and tested in helium cryogenic system. All joints were conducted by soldering after etching stabilizer of the CC to minimize joint resistance. The pumping rate was determined by current amplitude and timing sequential control of heaters and the electromagnet. Operating characteristics were analyzed to enhance charging efficiency and the feasibility of temporally stable CC magnet during persistent mode was studied.",
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Operating characteristics of HTS power supply for and improving temporal stability of coated conductor magnet in liquid helium. / Park, D. K.; Kim, Y. J.; Yang, S. E.; Kwon, N. Y.; Lee, H. G.; Ko, Tae Kuk.

In: Physica C: Superconductivity and its Applications, Vol. 469, No. 15-20, 15.10.2009, p. 1804-1807.

Research output: Contribution to journalArticle

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AU - Park, D. K.

AU - Kim, Y. J.

AU - Yang, S. E.

AU - Kwon, N. Y.

AU - Lee, H. G.

AU - Ko, Tae Kuk

PY - 2009/10/15

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