The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Schmidt, Ch. AU - Ayvazyan, V. AU - Branlard, J. AU - Butkowski, Ł. AU - Cichalewski, W. AU - Hensler, O. AU - Killenberg, M. AU - Makowski, F. AU - Omet, M. AU - Pfeiffer, S. AU - Piotrowski, A. AU - Przygoda, K.P. AU - Schlarb, H. ED - Corvetti, Lou ED - Riches, Kathleen ED - Schaa, Volker RW TI - High Level Software Structure for the European XFEL LLRF System J2 - Proc. of ICALEPCS2015, Melbourne, Australia, 17-23 October 2015 C1 - Melbourne, Australia T2 - International Conference on Accelerator and Large Experimental Physics Control Systems T3 - 15 LA - english AB - The Low level RF system for the European XFEL is controlling the accelerating RF fields in order to meet the specifications of the electron bunch parameters. A hardware platform based on the MicroTCA.4 standard has been chosen, to realize a reliable, remotely maintainable and high performing integrated system. Fast data transfer and processing is done by field programmable gate arrays (FPGA) within the crate, controlled by a CPU via PCIe communication. In addition to the MTCA system, the LLRF comprises external supporting modules also requiring control and monitoring software. In this paper the LLRF system high level software used in E-XFEL is presented. It is implemented as a semi-distributed architecture of front end server instances in combination with direct FPGA communication using fast optical links. Miscellaneous server tasks have to be executed, e.g. fast data acquisition and distribution, adaptation algorithms and updating controller parameters. Furthermore the inter-server data communication and integration within the control system environment as well as the interface to other subsystems are described. PB - JACoW CP - Geneva, Switzerland SP - 757 EP - 760 KW - LLRF KW - controls KW - FPGA KW - software KW - electron DA - 2015/12 PY - 2015 SN - 978-3-95450-148-9 DO - 10.18429/JACoW-ICALEPCS2015-WEPGF029 UR - http://jacow.org/icalepcs2015/papers/wepgf029.pdf ER -