Operation-Oriented Computer Controls for the CERN PS Complex

A new computer control system for the CERN PS is presently under development, with the final aim to operate all the accelerators from a unique control centre. From the start, a team of engineers experienced in machine physics and the actual control process, undertook the definition of guiding operational concepts and special characteristics for control and equipment. This included defining the control room layout, structuring the accelerators into operational subprocess, specifying in detail the interactive programs and participating in the commissioning. Using process variables reservation to prevent usage conflicts, the operation can be carried out from any one of the 5 nondedicated consoles. This involves cycle-to-cycle programming parameters and functions with quick access to ~ 1600 analogue signals from each console. The structured system permits analysis of process degradation and advance warning of breakdowns. Full use is made of the data handling power by means of global commands and stored optimum operating conditions.