Analysis of current after normal transition in a cable-in-conduit conductor

When some strands carry a large current as a result of current imbalance, they may initially become normal and the current is transferred to other superconducting strands. A one-dimensional simulation code for stability and quench of a cable-in-conduit conductor is improved to study this phenomenon using an infinitely long distributed circuit model, in which the current can easily be calculated. The results show the normal zone propagation plays a significant role in the current decay. Also, they are indicated that the conductor is more stable for higher conductance but the stability of the conductor seems more important to prevent instability due to the current imbalance.