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

Andries den Ouden; Herman H.J. ten Kate

doi:10.1016/S0011-2275(05)80087-6

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 language	English
Pages (from-to)	385-388
Number of pages	4
Journal	Cryogenics
Volume	34
Issue number	Suppl. 1
DOIs	https://doi.org/10.1016/S0011-2275(05)80087-6
Publication status	Published - 1994
Event	15th International Cryogenic Engineering Conference, ICEC 1994 - Genoa, Italy Duration: 7 Jun 1994 → 10 Jun 1994 Conference number: 15

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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.",

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doi = "10.1016/S0011-2275(05)80087-6",

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pages = "385--388",

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

AU - den Ouden, Andries

AU - ten Kate, Herman H.J.

N1 - Conference code: 15

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

T2 - 15th International Cryogenic Engineering Conference, ICEC 1994

Y2 - 7 June 1994 through 10 June 1994

ER -

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

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