On-Line Computation and Presentation of External Proton Beam Line Targeting Information

The system described calculates both horizontal and vertical beam size and center position at each experimenter´s target. The measuring devices are of the nondestructive multiple-wire type. The necessary multiplexing and synchronized sampling of the devices are controlled by the Zero Gradient Synchrotron (ZGS) control computer. As soon as the data are available, a program is called upon to calculate the beam center position and full width at half maximum (FWHM). As these values are calculated, they are formatted and multiplexed to displays for the ZGS operators and to the experimenters´ location. The system processes up to eight profile devices and supplies results on a pulse-to-pulse basis immediately after the beam spill time.