Doublet III neutral beam computer system overview and upgrade

Three neutral beamline injectors each containing two ion sources are currently operational on GA Technologies Doublet III tokamak experiment. A separate computer system is implemented for each beamline and provides acquisition, processing and archiving for all beamline and physics data and provides realtime control and automatic sequencing for all modes of operation. The computer system was developed and implemented from three separate software packages. The first, the data acquisition and processing of beamline physics data was built by the University of California Lawrence Berkeley Laboratories (LBL). The second, the real time control and automatic sequencing is an adapted version of the Doublet III control system. The third system, the archiving of all beamline data was developed from the archiving scheme used on the Doublet III diagnostic system. In this study, the current configurations of the beamline computer systems are described. It provides an insight into the future enhancements for improving the operational capabilities of the beamlines