A NEW CONTROL SYSTEM FOR THE S-DALINAC ‡

Recent results with respect to the development of a new control system for the superconducting cw electron accelerator S–DALINAC are presented. The system is based on common industrial standards. Due to the exceptionally large number of devices necessary to control the beam at the S–DALINAC, a simple and inexpensive communication interface is required to replace the current proprietary bus topology. The existing devices will be extended by a microcontroller based CAN-Bus interface as a communication path to one or more control servers. These servers utilize a TCP/IP connection to give application programs (clients) access to the device parameters. The protocol for this communication is composed of a special binary protocol and a text protocol based on XML.