Development and First Results with a Storage Resonator Enhancing the Shunt Impedance of an Electron Accelerating Cavity

In electron storage rings where the bunch repetition rate is low the dissipation of RF power in the accelerating cavity can be reduced by modulating the RF. A scheme using the energy oscillation between a storage resonator and the accelerating cavity has been successfully tested. Results of both low-and high-power tests at 500 MHz as well as design considerations for a 352 MHz prototype are presented.