Generalized Control and Data Access at the LANSCE Accelerator
Complex -- Gateways, Migrators, and Other Servers

Stuart C. Schaller, Michael A. Oothoudt
Los Alamos National Laboratory


All large accelerator control systems eventually outlast the technologies with which they were built. This has happened several times during the lifetime of the accelerators at Los Alamos in the LAMPF/PSR beam delivery complex. Most recently, the EPICS control system has been integrated with the existing LAMPF and PSR control systems. In this paper, we discuss the provisions that were made to provide uniform, and nearly transparent sharing of data among the three control systems. The data sharing mechanisms have now been in use during a very successful beam production period. We comment on the successes and failures of the project and indicate the control system properties that make such sharing possible.