RF cavity emulator for superconducting and normal conducting cavity

A RF cavity emulator is developed for integrated testing with Low Level RF (LLRF) system. Cavity model is implemented in digital on FPGA and includes cavity dynamics of fundamental mode, detuning model, delay model and electromechanical modes. RF cavity parameters such as cavity frequency, quality factor, coupling factor and detuning are kept programmable to emulate behaviour over wide range of these RF parameters covering both, superconducting and normal conducting cavities. Integrated testing with LLRF is successfully performed and the results are presented. (author)