Million volt repetitive spark gaps

Possible reasons are briefly discussed why switches operating at one or two million volts may be needed. Experimental results obtained with a 700 kV spark gap operating at a very modest rate of 10 pps are summarised. Reasons are advanced why it may be possible to push the repetition rate up to 1 kHz or more for gaps operating at a million volts or so. A very brief survey is given as to what the author thinks may be some of the areas of greatest difficulty associated with repetitive pulse generators operating in such regimes