Calabazas Creek Research (CCR) develops and designs a wide variety of high power microwave and millimeter wave devices and components including the development of advanced, innovative technologies for the high power RF community. CCR specializes in very high power microwave and millimeter-wave sources and components for research in high energy physics, fusion energy development, and advanced Department of Defense systems. CCR's range of expertise extends from 1 GHz to 1 THz in frequency and from milliwatts to hundreds of Megawatts of delivered RF power. The firm's personnel are skilled in advanced electron optics design, electromagnetic and thermomechanical analysis, mechanical design and fabrication of vacuum electron sources and components. The company is currently developing multiple beam inductive output tubes (IOTs), multiple beam klystrons, annular beam klystrons, backward wave oscillators (BWOs), gyrotrons, and traveling wave tubes (TWTs). These programs are supported by CCRÂ’s research in advanced cathodes, RF windows, microfabricated circuits, RF loads, and advanced computational design codes.