1 MV, 5Hz, 8 Channel Water Switch.

摘要

An extension of previous work by J.C. Martin and workers at Sandia National Laboratory (SNL) has successfully resulted in a high-power, repetitively pulsed, water switch. We have demonstrated a 1 MV, 5 Hz, multi-channel switch which transferred nearly 1 kJ per pulse. Using a capacitive peaking circuit switched by a single channel water arc, the peaking capacitor and the multi-channel switch were pulse charged in 15 ns (10% to 90%). Both switches were untriggered. Current risetimes better than 2.5 ns were observed in the multi-channel switch. A simple coaxial b probe mounted in the switch was utilized to measure the current risetime and to infer the gap breakdown field of 1.1 MV /em. The switch gap, risetime and number of channels are consistent with calculations from the relationships of J.C. Martin.