On-Line Computer Monitoring and Optimization of a Multiple Target Proton Beam Line

Operation, tuning and monitoring of the multiple target external proton beam (EPB) at the Zero Gradient Synchrotron (ZGS) is described. Instrumentation presently installed permits continuous, nondestructive, quantitative, on-line computer monitoring of beam spot size, position, and intensity at each experimenter´s target or any desired location. The capability of a rapid emittance measurement also is provided. This measurement serves as input to computer programs, described elsewhere, which calculates the emittance and the necessary quadrupole settings for required beam profiles along the beam line. As a check, the resulting beam profiles are instantly measurable at appropriate locations and any necessary final adjustments to provide more exact required conditions are then accomplished.