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A 200 kW power amplifier and solid state driver for the Fermilab Main Injector

A limitation of the existing Main Ring RF system is the power that it can deliver. The Fermilab Main Injector will require 112 KW for accelerating the full intensity at 240 GeV per second, which is pushing the upper limits for the present rf power amplifiers used in the Main Ring. New 200 kW power amplifiers will be placed on the cavities in the tunnel with 4 kW solid state drivers and 30 kV series tube modulators in the equipment gallery. Design, reliability, and solid state driver operation in a Main Ring RF station will be presented.