Problems in rejuvenating a control system and plans for the CERN proton synchrotron (CPS)

Abstract The problem of rejuvenating a control system will normally emerge for most of the accelerators and large experimental physics facilities. The lifetime of these facilities is much longer than the lifetime of their control systems, due to the rapid evolution in computer science technology. This means that during the active life of one facility the control system may have to be renewed between one and three times. The problems o this rejuvenation are discussed, taking into account the previous experience at the CERN proton synchrotron (CPS) and the constraints imposed by the financing of the project and the lack of staff. The current plans and options selected for the new generation of the CPS control system are presented. Domains of common work with other control systems will be especially highlighted.