Development of strip-line kicker system for ILC damping ring

The performance of a kicker system for the International Linear Collider(ILC) is one of the key technologies for determining the circumference and the train structure of a damping ring(DR). The parameters are being discussed as the baseline configuration design for the ILC. The bunch trains in the linac consist of 2820(or 5640) bunches with 330(or 165) ns spacing and the repetition rate is 5 Hz. The bunch spacing in the DR is 6(or 3) ns. The kicker is required to have fast rise and fall times of less than 6(or 3) ns and a repetition rate of 3(or 6) MHz. The development work of the kicker system using multiple strip-lines is carried out at KEK-ATF. The beam test result of the single unit is presented. The design of the beam extraction from ATF-DR to the extraction line is described.