A Fast Metallic Contact Closing Switch for the FDX Experiment
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The Fast Discharge Experiment (FOX), which is described in a companion paper, requires for current initiation a switch capable of carrying a peak current of 1. 9 10 6 kA with an initial rate of rise of 3 kV /μs. These requirements preclude a conventional making switch. The solution chosen uses electromagnetic repulsion to drive a movable contact which in the closed position metallically br1dges two stationary electrodes. Once closed, the device has very small internal resistance and a minimum of inductance. The design is described, the application in the FOX experiments is shown and the predicted performance is compared with actual test results.