Adjustment of resonance frequency in H-structures accelerating

It is necessary to adjust the resonant frequency of the accelerating structures during operation of high-frequency linear accelerators on the H-wave. The deviation of the resonant frequency of the resonator from the calculated value is due to the connection of input devices and control of RF power when changing the level of matching of the resonator with the feeder line that transports the RF power to the resonator, as well as when changing the temperature mode of the resonator. The problem is especially urgent when the accelerator structure consists of several resonators. The paper presents the designs of several resonant frequency tuners and the results of their research. The influence of the change of the frequency of oscillations excited in the accelerating structure on the parameters of the accelerated beam is considered. (author)