Optimization of a superconducting deflector with trapezoid parallel-bars

Superconducting parallel-bar deflectors are deflecting/crabbing cavities with attractive properties, such as compact structure and high efficiency. Aiming at the application in the XFEL proposed by Institute of High Energy Physics, a 325 MHz superconducting deflector with trapezoid parallel-bars is investigated and optimized. This paper presents the details on the design method and results of this deflector as follows: the simulation codes of CST MWS, CST PS, COMSOL, ANSYS are employed, the electromagnetic and mechanical parameters of the deflector are competitive, and the machining process is improved.