Baer, R.

Paper	Title	Page
TUC004	The White Rabbit Project	93
	J. Serrano, P. Alvarez, M. Cattin, E. G. Cota, J. H. Lewis, P. M. Oliveira Fernandes Moreira, T. Wlostowski CERN, Geneva R. Baer, T. Fleck, M. Kreider, C. Prados, S. Rauch GSI, Darmstadt J. Dedic Cosylab, Ljubljana G. Gaderer, P. Loschmidt Austrian Academy of Sciences, Wien
	Reliable, fast and deterministic transmission of control information in a network is a need for many distributed systems. One example is timing systems, where a reference frequency is used to accurately schedule time-critical messages. The White Rabbit (WR) project is a multi-laboratory and multi-company effort to bring together the best of the data transfer and timing worlds in a completely open design. It takes advantage of the latest developments for improving timing over Ethernet, such as IEEE 1588 (Precision Time Protocol) and Synchronous Ethernet. The presented approach aims for a general purpose, fieldbus-like transmission system, which provides deterministic data and timing (sub-ns accuracy and ps jitter) to around 1000 stations. It automatically compensates for fiber lengths in the order of 10 km. This paper describes the WR design goals and the specification used for the project. It goes on to describe the central component of the WR system structure - the WR switch - with theoretical considerations about the requirements. Finally, it presents real timing measurements for the first prototypes of WR hardware.
TUP107	Development of a New Control System for the FAIR Accelerator Complex at GSI	328
	R. Baer, U. Krause, V. RW. Schaa, W. Schiebel, M. Thieme GSI, Darmstadt
	The 'Facility for Antiproton and Ion Research' (FAIR) will be realized at the 'GSI Helmholtzzentrum für Ionenforschung GmbH' (Darmstadt, Germany) in the scope of a large international organization. This new accelerator complex will be a significant extension to the existing GSI accelerator chain. It will present unique challenges for the control system which are well beyond the capacity of the present system. A new control system is under development that considers all aspects of the expected functionality to operate the GSI/FAIR machines and integrates the present GSI controls infrastructure. The new control system substantially builds on proven principles and solutions and is based on a strictly modular design with well defined interfaces. Size and organizational structure of the FAIR project with international contributions demand for a high level of standardization and efficient interface management. This report summarizes concepts, architecture, technologies and building blocks of the new system.
	Poster