Speaker
Description
The Double Dipole Kicker (DDK) topology has been designed to perform off-axis injection into the ALBA II storage ring, currently under design. The DDK creates a multipole magnetic field by summing two opposite dipo-lar fields generated by four inner and four outer conduc-tor rods. The two dipolar fields are powered by two inde-pendent 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 syn-chrotron 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 titani-um layer of a variable thickness with the aim of minimiz-ing the effect of induced eddy currents on the stored beam. A DDK prototype has been built and installed alongside the four kickers that generate the injection bump at the ALBA storage ring. First injection tests with the DDK are presented.
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