Thermal conductivity of mica/glass insulation for impregnated Nb3Sn windings in accelerator magnets

Andries den Ouden, Herman H.J. ten Kate

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    Abstract

    The thermal conductivity of a combination of glass fibre tape and mica/glass sheetas insulation for superconducting Nb3Sn cables for a fully impregnated accelerator dipole magnet has been investigated. At 4.3 K a value for the thermal conductivity coefficient of 45 mW/m/K has been found, which is a considerable improvement compared to values of 5–15 mW/m/K if only mica/glass sheet is applied. An improved resin penetration to both sides of the mica/glass sheet not only increases the thermal conduction and therefore the stability margin of the superconductor, but it also enhances the shear strength of the insulation layer.
    Original languageEnglish
    Pages (from-to)385-388
    Number of pages4
    JournalCryogenics
    Volume34
    Issue numberSuppl. 1
    DOIs
    Publication statusPublished - 1994
    Event15th International Cryogenic Engineering Conference, ICEC 1994 - Genoa, Italy
    Duration: 7 Jun 199410 Jun 1994
    Conference number: 15

    Fingerprint

    Accelerator magnets
    Mica
    mica
    insulation
    Insulation
    Thermal conductivity
    accelerators
    magnets
    thermal conductivity
    Glass
    glass
    Superconducting cables
    shear strength
    glass fibers
    Shear strength
    Glass fibers
    Tapes
    resins
    cables
    tapes

    Cite this

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    title = "Thermal conductivity of mica/glass insulation for impregnated Nb3Sn windings in accelerator magnets",
    abstract = "The thermal conductivity of a combination of glass fibre tape and mica/glass sheetas insulation for superconducting Nb3Sn cables for a fully impregnated accelerator dipole magnet has been investigated. At 4.3 K a value for the thermal conductivity coefficient of 45 mW/m/K has been found, which is a considerable improvement compared to values of 5–15 mW/m/K if only mica/glass sheet is applied. An improved resin penetration to both sides of the mica/glass sheet not only increases the thermal conduction and therefore the stability margin of the superconductor, but it also enhances the shear strength of the insulation layer.",
    author = "{den Ouden}, Andries and {ten Kate}, {Herman H.J.}",
    year = "1994",
    doi = "10.1016/S0011-2275(05)80087-6",
    language = "English",
    volume = "34",
    pages = "385--388",
    journal = "Cryogenics",
    issn = "0011-2275",
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    }

    Thermal conductivity of mica/glass insulation for impregnated Nb3Sn windings in accelerator magnets. / den Ouden, Andries; ten Kate, Herman H.J.

    In: Cryogenics, Vol. 34, No. Suppl. 1, 1994, p. 385-388.

    Research output: Contribution to journalConference articleAcademicpeer-review

    TY - JOUR

    T1 - Thermal conductivity of mica/glass insulation for impregnated Nb3Sn windings in accelerator magnets

    AU - den Ouden, Andries

    AU - ten Kate, Herman H.J.

    PY - 1994

    Y1 - 1994

    N2 - The thermal conductivity of a combination of glass fibre tape and mica/glass sheetas insulation for superconducting Nb3Sn cables for a fully impregnated accelerator dipole magnet has been investigated. At 4.3 K a value for the thermal conductivity coefficient of 45 mW/m/K has been found, which is a considerable improvement compared to values of 5–15 mW/m/K if only mica/glass sheet is applied. An improved resin penetration to both sides of the mica/glass sheet not only increases the thermal conduction and therefore the stability margin of the superconductor, but it also enhances the shear strength of the insulation layer.

    AB - The thermal conductivity of a combination of glass fibre tape and mica/glass sheetas insulation for superconducting Nb3Sn cables for a fully impregnated accelerator dipole magnet has been investigated. At 4.3 K a value for the thermal conductivity coefficient of 45 mW/m/K has been found, which is a considerable improvement compared to values of 5–15 mW/m/K if only mica/glass sheet is applied. An improved resin penetration to both sides of the mica/glass sheet not only increases the thermal conduction and therefore the stability margin of the superconductor, but it also enhances the shear strength of the insulation layer.

    U2 - 10.1016/S0011-2275(05)80087-6

    DO - 10.1016/S0011-2275(05)80087-6

    M3 - Conference article

    VL - 34

    SP - 385

    EP - 388

    JO - Cryogenics

    JF - Cryogenics

    SN - 0011-2275

    IS - Suppl. 1

    ER -