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Description
The Double Dipole Kicker (DDK) topology has been designed to perform off-axis injection into the ALBA II storage ring, currently under construction. The DDK creates a multipole magnetic field by summing two opposite dipolar fields generated by four inner and four outer conductor rods. The two dipolar fields are powered by two independent pulsed power supplies that deliver identical pulses of up to 3 kA and 1.75 s. The rods are precisely positioned along in-air ceramic grooves, to maximize the kick of the injected beam coming from the booster synchrotron and, to minimize the field at the stored beam position during top-up injections. A pure dipolar mode is also available when the inner rods are not powered, which it will be used during ALBA II commissioning. The in-vacuum ceramic chamber is coated with a titanium layer of a variable thickness with the aim of minimizing the effect of induced eddy currents on the stored beam. A prototype of a DDK has been built and installed next to the existing four-kicker injecting scheme at the ALBA storage ring. The results of the manufacturing process along with the tests performed on the hardware components of the DDK system are presented in this paper
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