Mechanical design of a ferrite-based injection kicker for SNS accumulator ring

Two sets of kickers, 4 pulsed dipoles in each set, will be used in the SNS accumulator ring to create a dynamic orbit bump for injection process. These kickers are designed as large aperture, window frame magnets. The design of these 8 kickers has been completed. The first article kicker has been assembled and is being tested. In this paper we discuss the mechanical design criteria for these kickers, the layout in the accumulator ring, the magnetic field requirements and the ferrite based magnet field analysis, the eddy current and thermal considerations in the choice of ceramic vacuum chamber and its implementation. Also we discuss a wedge shaped clamp which was designed to reduce the vibration in the coil when powered at the 60 Hz repetition rate.