Speaker
Description
Stable control system operation is essential for long-term linac operation. At RIKEN, RILAC is operated as a heavy-ion linear accelerator and plays an important role in supplying beams for superheavy-element research. In the existing RIBF control system, many devices are integrated into EPICS through TCP/IP-based socket communication. Although TCP/IP-based interfaces are flexible and cost-effective, reconnection after an unexpected power loss, or a so-called dirty shutdown, of devices or network switches is not always successful because the socket connection is not closed properly. Such failures can require restarting EPICS IOCs and reduce beam availability and operational efficiency. Custom-designed devices and dedicated interfaces have supported the RIBF control system for many years, but their development and maintenance require considerable effort. To improve reliability and maintainability toward the next RIBF project, standard industrial interfaces and embedded EPICS technology have been introduced into the RILAC control system. Examples include EtherNet/IP-based device interfaces, Modbus-based substation monitoring, and embedded EPICS on industrial controller hardware.
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