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Diamond Light Source Control Systems Relational RDB |
controls, EPICS, status, photon |
87 |
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- K. Vijayan, M.T. Heron, S.J. Singleton
Diamond, Oxfordshire, United Kingdom
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The functionality of the Diamond Light Source Relational Database (RDB) will be described in this article. An Oracle-based RDB and web-based GUIs allow recording of system configuration information and configuration change management. Information about the hardware components that make up each beam line crate is stored in the RDB; for each item of control equipment, the status, location and name of the person responsible for the item are held. The Diamond Control System is based on EPICS and has of the order of 500,000 process variables (PVs); the RDB maintains a record of the names of these PVs and validates new names against the Diamond Naming Convention, allowing consistency of naming style to be maintained and avoiding name duplication. Machine operational details such as alarm logs are stored in the RDB and viewed using a web browser. All process data recorded by the control software are archived using the EPICS Channel Archiver; the Archiver configuration for each technical area is maintained in the RDB. A further application using the RDB is the electronic logbook (ELOG) which is used to record activities by Diamond Operations and Beamline groups.
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Poster WEPD52 [0.502 MB]
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