Diagnostics Development in SRRC

There are several new developments in diagnostics at the SRRC. These new developments include an orbit feedback system, tune monitor, filling pattern monitor, timedomain coupled-bunch oscillation monitor, and an improved synchrotron radiation monitor. A global orbit feedback system as well as a local orbit feedback system have been developed to eliminate excursions from the reference orbit that are caused by various perturbations. A digital receiver-based tune monitor provides a fast tune reading as a complementary tool to the commercial spectrum analyzer. Transient digitizers are used to acquire real-time filling patterns. Turn-by-turn and bunch-by-bunch beam signals acquired by the transient digitizer can extract information from coupled-bunch oscillations. Updated synchrotron radiation monitors provide a more convenient user interface.