A New Protection Scheme for High Current Density Magnets
The light weight superconducting magnets1,2 use high current density conductors and require internal energy dump for protection. The conductors and the structure are both heated during a quench and it is necessary that the energy absorption does not exceed their thermal limits. A new protection scheme is reported and analyzed in this paper. The magnet consists of two conductors cowound in parallel. When a normal region develops in one conductor current transfers to the other conductor driving it entirely normal which in turn drives the entire winding normal. Energy is absorbed uniformly both by the conductor and the structure thus limiting the temperature rise to allowable limits.
KeywordsHeat Transfer Coefficient High Current Density Critical Current Coupling Coefficient Protection Scheme
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