The Process Control Computer at the CERN Proton Synchrotron: Its Application in the Operation of a Fast Ejected Beam

An IBM 1800 has been installed at CERN to assist and improve operation of the Proton Synchrotron (CPS). This paper describes the three main tasks performed in the operation of ejected beams: logging of ejection parameters, monitoring of the beam transport currents and optimization of the ejected beam position on the external target. An account is also given of the hardware installed, the main features of the software and the operational facilities offered.