Probability of firing of a triggered vacuum gap incorporating barium titanate

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Abstract
The probability of firing of a. triggered vacuum gap (TVG) containing barium titanate in the trigger gap is investigated as a function of the trigger pulse duration, the peak voltage, the peak current and the trigger energy. The probability of firing depends on the trigger pulse duration ; shorter duration requires higher peak voltages to give consistent operations. At a fixed trigger voltage the probability of firing increases with increasing trigger pulse energy until a saturation in its value is reached at high energy. The trigger gap resistance decreases with increasing of both the main are current and the trigger current. Mechanisms of operation of the TVG are suggested and discussed.