Electrical performance of the injection system kickers at the Saskatchewan Accelerator Laboratory

The author describes the results of upgrading the electrostatic kicker system at the Saskatchewan Accelerator Laboratory (SAL). The second of two kickers required for multi-turn injection into the pulse stretcher ring (PSR) has been commissioned. Previously, with only one kicker, the injected beam duration was limited to slightly less than one pass around the circumference of the PSR. Multi-turn operation (up to three turns) enforced stringent field quality constraints and required a significant improvement in the electrical performance of the original kicker. After long-term operational experience the original modulator was upgraded and used as a model for the new assembly. The tandem kickers have successfully demonstrated multi-turn injection. Salient results of these investigations are presented.<>