Title :
Optimization and stability of a cable-in-conduit superconductor
Author_Institution :
Euratom Assoc., Max-Planck-Inst. fur Plasmaphys., Garching bei Munchen, Germany
fDate :
7/1/1996 12:00:00 AM
Abstract :
The optimization process for strand number and diameter, cable void fraction, and Cu/NbTi-ratio of the cable-in-conduit conductor for the superconducting magnet system of the planned stellarator fusion experiment Wendelstein 7-X is presented. Main optimization criteria are stability and cable cooling requirements, taking into account transient disturbances and losses. A simple stability criterion regarding transient disturbances is used which is derived from cable compression experiments. The resulting data for the 16 kA, 6 T cable are: cable and strand diameter ≈11.5 mm and ≈0.57 mm, respectively, strand number ≈250, void ≈36%, and Cu/sc-ratio ≈2.7
Keywords :
copper; eddy current losses; fusion reactor materials; multifilamentary superconductors; niobium alloys; stellarators; superconducting cables; superconducting magnets; superconducting materials; thermal stability; titanium alloys; transients; 0.57 mm; 11.5 mm; 16 kA; 6 T; Cu-NbTi; Cu/NbTi-ratio; cable cooling requirements; cable void fraction; cable-in-conduit superconductor; diameter; losses; optimization process; stability; stellarator fusion experiment Wendelstein 7-X; strand number; superconducting magnet system; transient disturbances; Cable shielding; Coils; Communication cables; Conductors; Cooling; Helium; Plasma temperature; Stability criteria; Superconducting cables; Superconducting magnets;
Journal_Title :
Magnetics, IEEE Transactions on
