Status of the upgraded version of the NRL GAMBLE II pulse power generator

It is noted that the GAMBLE II water dielectric pulse power generator, in 1970, was the forerunner of the high energy class of water dielectric generators. The generator has been redesigned internally to make maximum use of its original outer conductor shell and to optimize it for the positive polarity mode of operation for positive ion beam experimentation. Attention is given to the fact that the new design also initiates the use of an oil dielectric multichannel switch at the output of the pulse forming line. It is reported that this switch because of its low capacitance, eliminates the need for an extra prepulse switch. In conclusion, consideration is given to the testing of the upgraded version up to power and energy levels which are nearly twice the original.