View in EDS

Global cryogenic Paschen test of the JT-60SA magnet system.

Saved in:
Bibliographic Details
Title: Global cryogenic Paschen test of the JT-60SA magnet system.
Authors: Wanner, M.1 (AUTHOR) manfred.wanner@ext.f4e.europa.eu, Di Pietro, E.1 (AUTHOR), Barabaschi, P.2 (AUTHOR)
Source: Fusion Engineering & Design. Oct2023, Vol. 195, pN.PAG-N.PAG. 1p.
Subjects: Superconducting magnets, Thermal stresses, Electric insulators & insulation, Magnets, Electromagnetic waves, High voltages, Cooldown
Abstract: • Ambient temperature Paschen tests of components during assembly are standard test methods. • Global Paschen tests of a superconducting magnet system were executed so far only at ambient temperature. • A cryogenic global Paschen test of a full magnet system allows to validate the quality of the electrical insulation after having passed the thermal stresses during the cooldown. • A cryogenic global Paschen test can be safely executed at a temperature of about 90 K and usig argon as test gas. Superconducting fusion magnets feature large inductances, and operate at high currents and at cryogenic temperatures. In case of a quench, the stored electromagnetic energy need to be immediately discharged, thereby inducing high voltages. High quality electrical insulation withstanding cryogenic temperatures is therefore essential for the safe operation of the magnet system. Local and integral Paschen tests at ambient temperature have become a standard to validate the electrical insulation of electromagnetic components of fusion devices. In order to mitigate the risk from a degradation of the electric insulation during cool-down, a global Paschen test of the complete magnet system at cryogenic temperatures is suggested. This paper focuses on the specific design of JT-60SA fusion device, analyses the boundary conditions for a cryogenic global Paschen test, and demonstrates its feasibility at limited risk during a future cooldown. [ABSTRACT FROM AUTHOR]
Copyright of Fusion Engineering & Design is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 171920698
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Global cryogenic Paschen test of the JT-60SA magnet system.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Wanner%2C+M%2E%22">Wanner, M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> manfred.wanner@ext.f4e.europa.eu</i><br /><searchLink fieldCode="AR" term="%22Di+Pietro%2C+E%2E%22">Di Pietro, E.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Barabaschi%2C+P%2E%22">Barabaschi, P.</searchLink><relatesTo>2</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Fusion+Engineering+%26+Design%22">Fusion Engineering & Design</searchLink>. Oct2023, Vol. 195, pN.PAG-N.PAG. 1p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Superconducting+magnets%22">Superconducting magnets</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+stresses%22">Thermal stresses</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+insulators+%26+insulation%22">Electric insulators & insulation</searchLink><br /><searchLink fieldCode="DE" term="%22Magnets%22">Magnets</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+waves%22">Electromagnetic waves</searchLink><br /><searchLink fieldCode="DE" term="%22High+voltages%22">High voltages</searchLink><br /><searchLink fieldCode="DE" term="%22Cooldown%22">Cooldown</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • Ambient temperature Paschen tests of components during assembly are standard test methods. • Global Paschen tests of a superconducting magnet system were executed so far only at ambient temperature. • A cryogenic global Paschen test of a full magnet system allows to validate the quality of the electrical insulation after having passed the thermal stresses during the cooldown. • A cryogenic global Paschen test can be safely executed at a temperature of about 90 K and usig argon as test gas. Superconducting fusion magnets feature large inductances, and operate at high currents and at cryogenic temperatures. In case of a quench, the stored electromagnetic energy need to be immediately discharged, thereby inducing high voltages. High quality electrical insulation withstanding cryogenic temperatures is therefore essential for the safe operation of the magnet system. Local and integral Paschen tests at ambient temperature have become a standard to validate the electrical insulation of electromagnetic components of fusion devices. In order to mitigate the risk from a degradation of the electric insulation during cool-down, a global Paschen test of the complete magnet system at cryogenic temperatures is suggested. This paper focuses on the specific design of JT-60SA fusion device, analyses the boundary conditions for a cryogenic global Paschen test, and demonstrates its feasibility at limited risk during a future cooldown. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Fusion Engineering & Design is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=171920698
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.fusengdes.2023.113959
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Superconducting magnets
        Type: general
      – SubjectFull: Thermal stresses
        Type: general
      – SubjectFull: Electric insulators & insulation
        Type: general
      – SubjectFull: Magnets
        Type: general
      – SubjectFull: Electromagnetic waves
        Type: general
      – SubjectFull: High voltages
        Type: general
      – SubjectFull: Cooldown
        Type: general
    Titles:
      – TitleFull: Global cryogenic Paschen test of the JT-60SA magnet system.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Wanner, M.
      – PersonEntity:
          Name:
            NameFull: Di Pietro, E.
      – PersonEntity:
          Name:
            NameFull: Barabaschi, P.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 10
              Text: Oct2023
              Type: published
              Y: 2023
          Identifiers:
            – Type: issn-print
              Value: 09203796
          Numbering:
            – Type: volume
              Value: 195
          Titles:
            – TitleFull: Fusion Engineering & Design
              Type: main
ResultId 1