Development of a 3 ns rise and fall time strip-line kicker for the International Linear Collider

The kicker systems for the damping rings (DR) of the International Linear Collider (ILC) assume the use of multiple units of strip-line electrodes and fast pulse power supplies for beam injection and extraction. The design of the DR with a 6.7 km circumference requires the kicker system to have a 3 ns (or 6 ns) rise and fall time and a 6 MHz (or 3 MHz) repetition rate. The development of a single unit of a kicker system having such a performance was carried out at KEK-ATF DR. A system to improve the rise and fall time of the kick field by combining two opposite-sign pulses was developed. A rise time for the kick field of less than 3 ns is achieved using this technique.