Design and Testing of Gproto Bunch-by-bunch Signal Processor

Abstract

A prototype programmable bunch-by-bunch signal ac-quisition and processing channel with multiple applications in storage rings has been developed at SLAC. The process-ing channel supports up to 5120 bunches with bunch spac-ings as close as 1.9 ns. The prototype has been tested and operated in five storage rings: SPEAR-3, DAΦNE, PEP-II, KEKB, and ATF damping ring. The testing included such applications as transverse and longitudinal coupled-bunch instability control, bunch-by-bunch luminosity monitoring, and injection diagnostic. In this contribution the prototype design will be described and its operation will be illustrated with the data measured at the above-mentioned accelera-tors.