Phase-Space Dynamic Tracking by a Two Pickups Data Acquisition System

A two pickups dynamic tracking data acquisition system has been developed at LNF for the DA NE Phi-factory. Two oscilloscopes sample horizontal and vertical sum and difference signals from two pickups simultaneously; the sampling clock is locked to the DA NE timing system. A horizontal kick excites the beam motion and initiates the acquisition. Turn-by-turn signals are converted to beam position and stored on a server in a database using timestamp labels. Oscillation amplitude versus time, phase space distribution and frequency domain analysis have been evaluated for several lattices and different settings of sextupoles and octupoles. Results are used to check the DA NE non-linear model.