High Power Solid-State Amplifier for PIP-II

Statement of Problem & DOE/Public Interest: Klystrons, magnetrons, and other vacuum tubes have traditionally been used for high power applications, but the increasing transition of low power amplifiers to solid-state has significantly reduced the industrial base. Very high power transistorized RF amplifiers are promising for future DOE accelerators, but their complexity and cost must be reduced and reliable operation at high power must be demonstrated. How the Problem Will Be Addressed: A novel solid-state amplifier based on an integrated resonant cavity combiner will combine the power output of many high power transistors in one step. The simple and rugged configuration leads to massive reductions in the complexity of RF connections and coolant lines. These improvements will reduce cost and improve field reliability. Phase I Work: In Phase I, DTI will develop and implement a low cost 650 MHz solid-state amplifier operating with high efficiency and ruggedness. Commercial Applications/Benefits: The new technology will be applicable to users of high power RF and microwave sources. This includes widespread industrial microwave heating applications, radar, as well as many scientific applications in addition to particle accelerators. Key Words: resonant cavity combiner, solid-state RF