COMMISSIONING RESULTS OF THE MULTI BUNCH FEEDBACK SYSTEM AT SLS

Within the frame of the project for a multi bunch feedback system for the Swiss Light Source (SLS), a new family of 500 MS/s analog to digital and digital to analog conversion boards with an 8 bit resolution has been developed, containingon-boardMUX andDEMUX circuitryto reduce data rates to approximately 20 MS/s using up to twelve Front Panel Data Ports (FPDP). Using six quad processor DSP boards, full bandwidth bunch by bunch feedbacks in the transverse and longitudinal planes are set up to provide bunch by bunch correction kicks wit ha2n sresolution. We report on the hardware setup and properties as well as feedback performance in the SLS storage ring.