Study of a 560-mm-long stripline kicker for HIT 10 MeV electron accelerator

A stripline kicker is required for Harbin Institute of Technology (HIT) 10 MeV electron accelerator to scan electrons horizontally in two directions, and the maximum deflecting angle is 65 mrad. In this study, a 560-mm-long stripline kicker was designed to achieve good field uniformity and odd mode impedance matching. In order to reduce power reflections and meet field uniformity requirement, we optimized the cross section of the kicker main body. Design and optimization of the stripline kicker were finished by CST. The field uniformity is 2% in the 60 mm (x) × 80 mm (y) region, as required. Considering impedance matching and manufacturing, the transmission odd mode impedance was finally chosen to 45 Ω, which indicated a reflecting loss of less than −50 dB below 1 MHz. The maximum field is less than 7 MV/m with a maximum pulse voltage of ±22 kV between the two electrodes when the electrons pass through the kicker. The physical design of the stripline kicker has been finished, and the simulation results satisfied the requirements.