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.
|Number of pages||4|
|Issue number||Suppl. 1|
|Publication status||Published - 1994|
|Event||15th International Cryogenic Engineering Conference, ICEC 1994 - Genoa, Italy|
Duration: 7 Jun 1994 → 10 Jun 1994
Conference number: 15