RF cold tests of open mm-wave metallic accelerating structures

This paper describes the design and the low-power RF tests of an open mm-wave metallic accelerating structure. We used the numerical codes CST Microwave Studio and ANSYS HFSS in order to optimize the gap size and position that could introduce several and undesired field perturbation. A 3-cells standing wave structure at 93 GHz was fabricated and the S-parameters have been measured in excellent agreement with simulations